Will Hitachi Announce A High Speed Metro Train?
As the UK high speed rail network increases, we are seeing more services and proposed services, where local services are sharing tracks, where trains will be running at 125 mph or even more.
London Kings Cross And Cambridge/Kings Lynn
This Great Northern service is run by Class 387 trains.
- Services run between London Kings Cross and King’s Lynn or Cambridge
- The Class 387 trains have a maximum operating speed of 110 mph.
- The route is fully electrified.
- The trains generally use the fast lines on the East Coast Main Line, South of Hitchin.
- Most trains on the fast lines on the East Coast Main Line are travelling at 125 mph.
When in the future full digital in-cab ERTMS signalling is implemented on the East Coast Main Line, speeds of up to 140 mph should be possible in some sections between London Kings Cross and Hitchin.
The Digswell Viaduct Problem
I also believe that digital signalling may be able to provide a solution to the twin-track bottleneck over the Digswell Viaduct.
Consider.
- Airliners have been flown automatically and safely from airport to airport for perhaps four decades.
- The Victoria Line in London, has been running automatically and safely at over twenty trains per hour (tph) for five decades. It is now running at over 30 tph.
- I worked with engineers developing a high-frequency sequence control system for a complicated chemical plant in 1970.
We also can’t deny that computers are getting better and more capable.
For these reasons, I believe there could be an ERTMS-based solution to the problem of the Digswell Viaduct, which could be something like this.
- All trains running on the two track section over the Digswell Viaduct and through Welwyn North station would be under computer control between Welwyn Garden City and Knebworth stations.
- Fast trains would be slowed as appropriate to create spaces to allow the slow trains to pass through the section.
- The train drivers would be monitoring the computer control, just as they do on the Victoria Line.
Much more complicated automated systems have been created in various applications.
The nearest rail application in the UK, is probably the application of digital signalling to London Underground’s Circle, District, Hammersmith & City and Metropolitan Lines.
This is known at the Four Lines Modernisation and it will be completed by 2023 and increase capacity by up to twenty-seven percent.
I don’t think it unreasonable to see the following maximum numbers of services running over the Digswell Viaduct by 2030 in both directions in every hour.
- Sixteen fast trains
- Four slow trains
That is one train every three minutes.
Currently, it appears to be about ten fast and two slow.
As someone, who doesn’t like to be on a platform, when a fast train goes through, I believe that some form of advanced safety measures should be installed at Welwyn North station.
It would appear that trains between London Kings Cross and King’s Lynn need to have this specification.
- Ability to run at 125 mph on the East Coast Main Line
- Ability to run at 140 mph on the East Coast Main Line, under control of full digital in-cab ERTMS signalling.
This speed increase could reduce the journey time between London Kings Cross and Cambridge to just over half-an-hour with London Kings Cross and King’s Lynn under ninety minutes.
The only new infrastructure needed would be improvements to the Fen Line to King’s Lynn to allow two tph, which I think is needed.
Speed improvements between Hitchin and Cambridge could also benefit timings.
London Kings Cross And Cambridge/Norwich
I believe there is a need for a high speed service between London Kings Cross and Norwich via Cambridge.
- The Class 755 trains, that are capable of 100 mph take 82 minutes, between Cambridge and Norwich.
- The electrification gap between Ely and Norwich is 54 miles.
- Norwich station and South of Ely is fully electrified.
- Greater Anglia’s Norwich and Cambridge service has been very successful.
With the growth of Cambridge and its incessant need for more space, housing and workers, a high speed train between London Kings Cross and Norwich via Cambridge could tick a lot of boxes.
- If hourly, it would double the frequency between Cambridge and Norwich until East-West Rail is completed.
- All stations between Ely and Norwich get a direct London service.
- Cambridge would have better links for commuting to the city.
- Norwich would provide the quality premises, that Cambridge is finding hard to develop.
- London Kings Cross and Cambridge would be just over half an hour apart.
- If the current London Kings Cross and Ely service were to be extended to Norwich, no extra paths on the East Coast Main Line would be needed.
- Trains could even split and join at Cambridge or Ely to give all stations a two tph service to London Kings Cross.
- No new infrastructure would be required.
The Cambridge Cruiser would become the Cambridge High Speed Cruiser.
London Paddington And Bedwyn
This Great Western Railway service is run by Class 802 trains.
- Services run between London Paddington and Bedwyn.
- Services use the Great Western Main Line at speeds of up to 125 mph.
- In the future if full digital in-cab ERTMS signalling is implemented, speeds of up to 140 mph could be possible on some sections between London Paddington and Reading.
- The 13.3 miles between Newbury and Bedwyn is not electrified.
As the service would need to be able to run both ways between Newbury and Bedwyn, a capability to run upwards of perhaps thirty miles without electrification is needed. Currently, diesel power is used, but battery power would be better.
London Paddington And Oxford
This Great Western Railway service is run by Class 802 trains.
- Services run between London Paddington and Oxford.
- Services use the Great Western Main Line at speeds of up to 125 mph.
- In the future if full digital in-cab ERTMS signalling is implemented, speeds of up to 140 mph could be possible on some sections between London Paddington and Didcot Parkway.
- The 10.3 miles between Didcot Parkway and Oxford is not electrified.
As the service would need to be able to run both ways between Didcot Parkway and Oxford, a capability to run upwards of perhaps thirty miles without electrification is needed. Currently, diesel power is used, but battery power would be better.
Local And Regional Trains On Existing 125 mph Lines
In The UK, in addition to High Speed One and High Speed Two, we have the following lines, where speeds of 125 mph are possible.
- East Coast Main Line
- Great Western Main Line
- Midland Main Line
- West Coast Main Line
Note.
- Long stretches of these routes allow speeds of up to 125 mph.
- Full digital in-cab ERTMS signalling is being installed on the East Coast Main Line to allow running up to 140 mph.
- Some of these routes have four tracks, with pairs of slow and fast lines, but there are sections with only two tracks.
It is likely, that by the end of the decade large sections of these four 125 mph lines will have been upgraded, to allow faster running.
If you have Hitachi and other trains thundering along at 140 mph, you don’t want dawdlers, at 100 mph or less, on the same tracks.
These are a few examples of slow trains, that use two-track sections of 125 nph lines.
- East Midlands Railway – 1 tph – Leicester and Lincoln – Uses Midland Main Line
- East Midlands Railway – 1 tph – Liverpool and Norwich – Uses Midland Main Line
- East Midlands Railway – 2 tph – St. Pancras and Corby – Uses Midland Main Line
- Great Western Railway – 1 tph – Cardiff and Portsmouth Harbour – Uses Great Western Main Line
- Great Western Railway – 1 tph – Cardiff and Taunton – Uses Great Western Main Line
- Northern – 1 tph – Manchester Airport and Cumbria – Uses West Coast Main Line
- Northern – 1 tph – Newcastle and Morpeth – Uses East Coast Main Line
- West Midlands Trains – Some services use West Coast Main Line.
Conflicts can probably be avoided by judicious train planning in some cases, but in some cases trains capable of 125 mph will be needed.
Southeastern Highspeed Services
Class 395 trains have been running Southeastern Highspeed local services since 2009.
- Services run between London St. Pancras and Kent.
- Services use Speed One at speeds of up to 140 mph.
- These services are planned to be extended to Hastings and possibly Eastbourne.
The extension would need the ability to run on the Marshlink Line, which is an electrification gap of 25.4 miles, between Ashford and Ore.
Thameslink
Thameslink is a tricky problem.
These services run on the double-track section of the East Coast Main Line over the Digswell Viaduct.
- 2 tph – Cambridge and Brighton – Fast train stopping at Hitchin, Stevenage and Finsbury Park.
- 2 tph – Cambridge and Kings Cross – Slow train stopping at Hitchin, Stevenage, Knebworth, Welwyn North, Welwyn Garden City, Hatfield, Potters Bar and Finsbury Park
- 2 tph – Peterborough and Horsham – Fast train stopping at Hitchin, Stevenage and Finsbury Park.
Note.
- These services are run by Class 700 trains, that are only capable of 100 mph.
- The fast services take the fast lines South of the Digswell Viaduct.
- South of Finsbury Park, both fast services cross over to access the Canal Tunnel for St, Pancras station.
- I am fairly certain, that I have been on InterCity 125 trains running in excess of 100 mph in places between Finsbury Park and Stevenage.
It would appear that the slow Thameslink trains are slowing express services South of Stevenage.
As I indicated earlier, I think it is likely that the Kings Cross and King’s Lynn services will use 125 mph trains for various reasons, like London and Cambridge in under half an hour.
But if 125 mph trains are better for King’s Lynn services, then they would surely improve Thameslink and increase capacity between London and Stevenage.
Looking at average speeds and timings on the 25 miles between Stevenage and Finsbury Park gives the following.
- 100 mph – 15 minutes
- 110 mph – 14 minutes
- 125 mph – 12 minutes
- 140 mph – 11 minutes
The figures don’t appear to indicate large savings, but when you take into account that the four tph running the Thameslink services to Peterborough and Cambridge stop at Finsbury Park and Stevenage and have to get up to speed, I feel that the 100 mph Class 700 trains are a hindrance to more and faster trains on the Southern section of the East Coast Main Line.
It should be noted, that faster trains on these Thameslink services would probably have better acceleration and and would be able to execute faster stops at stations.
There is a similar less serious problem on the Midland Main Line branch of Thameslink, in that some Thameslink services use the fast lines.
A couple of years ago, I had a very interesting chat with a group of East Midlands Railway drivers. They felt that the 100 mph Thameslink and the 125 mph Class 222 trains were not a good mix.
The Midland Main Line services are also becoming more complicated, with the new EMR Electric services between St. Pancras and Corby, which will be run by 110 mph Class 360 trains.
Hitachi’s Three Trains With Batteries
Hitachi have so far announced three battery-electric trains. Two are based on battery packs being developed and built by Hyperdrive Innovation.
Hyperdrive Innovation
Looking at the Hyperdrive Innovation web site, I like what I see.
Hyperdrive Innovation provided the battery packs for JCB’s first electric excavator.
Note that JCB give a five-year warranty on the Hyperdrive batteries.
Hyperdrive have also been involved in the design of battery packs for aircraft push-back tractors.
The battery capacity for one of these is given as 172 kWh and it is able to supply 34 kW.
I was very surprised that Hitachi didn’t go back to Japan for their batteries, but after reading Hyperdrive’s web site about the JCB and Textron applications, there would appear to be good reasons to use Hyperdrive.
- Hyperdrive have experience of large lithium ion batteries.
- Hyperdrive have a design, develop and manufacture model.
- They seem to able to develop solutions quickly and successfully.
- Battery packs for the UK and Europe are made in Sunderland.
- Hyperdrive are co-operating with Nissan, Warwick Manufacturing Group and Newcastle University.
- They appear from the web site to be experts in the field of battery management, which is important in prolonging battery life.
- Hyperdrive have a Taiwanese partner, who manufactures their battery packs for Taiwan and China.
- I have done calculations based on the datasheet for their batteries and Hyperdrive’s energy density is up with the best
I suspect, that Hitachi also like the idea of a local supplier, as it could be helpful in the negotiation of innovative applications. Face-to-face discussions are easier, when you’re only thirty miles apart.
Hitachi Regional Battery Train
The first train to be announced was the Hitachi Regional Battery Train, which is described in this Hitachi infographic.
Note.
- It is only a 100 mph train.
- The batteries are to be designed and manufactured by Hyperdrive Innovation.
- It has a range of 56 miles on battery power.
- Any of Hitachi’s A Train family like Class 800, 802 or 385 train can be converted to a Regional Battery Train.
No orders have been announced yet.
But it would surely be very suitable for routes like.
- London Paddington And Bedwyn
- London Paddington And Oxford
It would also be very suitable for extensions to electrified suburban routes like.
- London Bridge and Uckfield
- London Waterloo and Salisbury
- Manchester Airport and Windermere.
- Newcastle and Carlisle
It would also be a very sound choice to extend electrified routes in Scotland, which are currently run by Class 385 trains.
Hitachi InterCity Tri-Mode Battery Train
The second train to be announced was the Hitachi InterCity Tri-Mode Battery Train, which is described in this Hitachi infographic.
Note.
- Only one engine is replaced by a battery.
- The batteries are to be designed and manufactured by Hyperdrive Innovation.
- Typically a five-car Class 800 or 802 train has three diesel engines and a nine-car train has five.
- These trains would obviously be capable of 125 mph on electrified main lines and 140 mph on lines fully equipped with digital in-cab ERTMS signalling.
Nothing is said about battery range away from electrification.
Routes currently run from London with a section without electrification at the other end include.
- London Kings Cross And Harrogate – 18.3 miles
- London Kings Cross And Hull – 36 miles
- London Kings Cross And Lincoln – 16.5 miles
- London Paddington And Bedwyn – 13.3 miles
- London Paddington And Oxford – 10.3 miles
In the March 2021 Edition of Modern Railways, LNER are quoted as having aspirations to extend the Lincoln service to Cleethorpes.
- With all energy developments in North Lincolnshire, this is probably a good idea.
- Services could also call at Market Rasen and Grimsby.
- Two trains per day, would probably be a minimum frequency.
But the trains would need to be able to run around 64 miles each way without electrification. Very large batteries and/or charging at Cleethorpes will be needed.
Class 803 Trains For East Coast Trains
East Coast Trains have ordered a fleet of five Class 803 trains.
- These trains appear to be built for speed and fast acceleration.
- They have no diesel engines, which must save weight and servicing costs.
- But they will be fitted with batteries for emergency power to maintain onboard train services in the event of overhead line failure.
- They are planned to enter service in October 2021.
Given that Hyperdrive Innovation are developing traction batteries for the other two Hitachi battery trains, I would not be the least bit surprised if Hyperdrive were designing and building the batteries for the Class 803 trains.
- Hyperdrive batteries are modular, so for a smaller battery you would use less modules.
- If all coaches are wired for a diesel engine, then they can accept any power module like a battery or hydrogen pack, without expensive redesign.
- I suspect too, that the battery packs for the Class 803 trains could be tested on an LNER Class 801 train.
LNER might also decide to replace the diesel engines on their Class 801 trains with an emergency battery pack, if it were more energy efficient and had a lighter weight.
Thoughts On The Design Of The Hyperdrive innovation Battery Packs
Consider.
- Hitachi trains have a sophisticated computer system, which on start-up can determine the configuration of the train or whether it is more than one train running as a longer formation or even being hauled by a locomotive.
- To convert a bi-mode Class 800 train to an all-electric Class 801 the diesel engines are removed. I suspect that the computer is also adjusted, but train formation may well be totally automatic and independent of the driver.
- Hyperdrive Innovation’s battery seem to be based on a modular system, where typical modules have a capacity of 5 kWh, weighs 32 Kg and has a volume of 0.022 cu metres.
- The wet mass of an MTU 16V 1600 R80L diesel engine commonly fitted to AT-300 trains of different types is 6750 Kg or nearly seven tonnes.
- The diesel engine has a physical size of 1.5 x 1.25 x 0.845 metres, which is a volume of 1.6 cubic metres.
- In How Much Power Is Needed To Run A Train At 125 mph?, I calculated that a five-car Class 801 electric train, needed 3.42 kWh per vehicle-mile to maintain 125 mph.
- It is likely, than any design of battery pack, will handle the regenerative braking.
To my mind, the ideal solution would be a plug compatible battery pack, that the train’s computer thought was a diesel engine.
But then I have form in the area of plug-compatible electronics.
At the age of sixteen, for a vacation job, I worked in the Electronics Laboratory at Enfield Rolling Mills.
It was the early sixties and one of their tasks was at the time replacing electronic valve-based automation systems with new transistor-based systems.
The new equipment had to be compatible to that which it replaced, but as some were installed in dozens of places around the works, they had to be able to be plug-compatible, so that they could be quickly changed. Occasionally, the new ones suffered infant-mortality and the old equipment could just be plugged back in, if there wasn’t a spare of the new equipment.
So will Hyperdrive Innovation’s battery-packs have the same characteristics as the diesel engines that they replace?
- Same instantaneous and continuous power output.
- Both would fit the same mountings under the train.
- Same control and electrical power connections.
- Compatibility with the trains control computer.
I think they will as it will give several advantages.
- The changeover between diesel engine and battery pack could be designed as a simple overnight operation.
- Operators can mix-and-match the number of diesel engines and battery-packs to a given route.
- As the lithium-ion cells making up the battery pack improve, battery capacity and performance can be increased.
- If the computer, is well-programmed, it could reduce diesel usage and carbon-emissions.
- Driver conversion from a standard train to one equipped with batteries, would surely be simplified.
As with the diesel engines, all battery packs could be substantially the same across all of Hitachi’s Class 80x trains.
What Size Of Battery Would Be Possible?
If Hyperdrive are producing a battery pack with the same volume as the diesel engine it replaced, I estimate that the battery would have a capacity defined by.
5 * 1.6 / 0.022 = 364 kWh
In an article in the October 2017 Edition of Modern Railways, which is entitled Celling England By The Pound, Ian Walmsley says this in relation to trains running on the Uckfield Branch, which is not very challenging.
A modern EMU needs between 3 and 5 kWh per vehicle mile for this sort of service.
As a figure of 3.42 kWh per vehicle-mile to maintain 125 mph, applies to a Class 801 train, I suspect that a figure of 3 kWh or less could apply to a five-car Class 800 train trundling at around 80-100 mph to Bedwyn, Cleethorpes or Oxford.
- A one-battery five-car train would have a range of 24.3 miles
- A two-battery five-car train would have a range of 48.6 miles
- A three-battery five-car train would have a range of 72.9 miles
Note.
- Reducing the consumption to 2.5 kWh per vehicle-mile would give a range of 87.3 miles.
- Reducing the consumption to 2 kWh per vehicle-mile would give a range of 109.2 miles.
- Hitachi will be working to reduce the electricity consumption of the trains.
- There will also be losses at each station stop, as regenerative braking is not 100 % efficient.
But it does appear to me, that distances of the order of 60-70 miles would be possible on a lot of routes.
Bedwyn, Harrogate, Lincoln and Oxford may be possible without charging before the return trip.
Cleethorpes and Hull would need a battery charge before return.
A Specification For A High Speed Metro Train
I have called the proposed train a High Speed Metro Train, as it would run at up to 140 mph on an existing high speed line and then run a full or limited stopping service to the final destination.
These are a few thoughts.
Electrification
In some cases like London Kings Cross and King’s Lynn, the route is already electrified and batteries would only be needed for the following.
- Handling regenerative braking.
- Emergency power in case of overhead line failure.
- Train movements in depots.
But if the overhead wires on a branch line. are in need of replacement, why not remove them and use battery power? It might be the most affordable and least disruptive option to update the power supply on a route.
The trains would have to be able to run on both types of electrification in the UK.
- 25 KVAC overhead.
- 750 VDC third rail.
This dual-voltage capability would enable the extension of Southeastern Highspeed services.
Operating Speed
The trains must obviously be capable of running at the maximum operating speed on the routes they travel.
- 125 mph on high speed lines, where this speed is possible.
- 140 mph on high speed lines equipped with full digital in-cab ERTMS signalling, where this speed is possible.
The performance on battery power must be matched with the routes.
Hitachi have said, that their Regional Battery trains can run at up to 100 mph, which would probably be sufficient for most secondary routes in the UK and in line with modern diesel and electric multiple units.
Full Digital In-cab ERTMS Signalling
This will be essential and is already fitted to some of Hitachi’s trains.
Regenerative Braking To Batteries
Hitachi’s battery electric trains will probably use regenerative braking to the batteries, as it is much more energy efficient.
It also means that when stopping at a station perhaps as much as 70-80% of the train’s kinetic energy can be captured in the batteries and used to accelerate the train.
In Kinetic Energy Of A Five-Car Class 801 Train, I showed that at 125 mph the energy of a full five-car train is just over 100 kWh, so batteries would not need to be unduly large.
Acceleration
This graph from Eversholt Rail, shows the acceleration and deceleration of a five-car Class 802 electric train.
As batteries are just a different source of electric power, I would think, that with respect to acceleration and deceleration, that the performance of a battery-electric version will be similar.
Although, it will only achieve 160 kph instead of the 200 kph of the electric train.
I estimate from this graph, that a battery-electric train would take around 220 seconds from starting to decelerate for a station to being back at 160 kph. If the train was stopped for around eighty seconds, a station stop would add five minutes to the journey time.
London Kings Cross And Cleethorpes
As an example consider a service between London Kings Cross and Cleethorpes.
- The section without electrification between Newark and Cleethorpes is 64 miles.
- There appear to be ambitions to increase the operating speed to 90 mph.
- Local trains seem to travel at around 45 mph including stops.
- A fast service between London Kings Cross and Cleethorpes would probably stop at Lincoln Central, Market Rasen and Grimsby Town.
- In addition, local services stop at Collingham, Hykeham, Barnetby and Habrough.
- London Kings Cross and Newark takes one hour and twenty minutes.
- London Kings Cross and Cleethorpes takes three hours and fifteen minutes with a change at Doncaster.
I can now calculate a time between Kings Cross and Cleethorpes.
- If a battery-electric train can average 70 mph between Newark and Cleethorpes, it would take 55 minutes.
- Add five minutes for each of the three stops at Lincoln Central, Market Rasen and Grimsby Town
- Add in the eighty minutes between London Kings Cross and Newark and that would be two-and-a-half hours.
That would be very marketing friendly and a very good start.
Note.
- An average speed of 80 mph would save seven minutes.
- An average speed of 90 mph would save twelve minutes.
- I suspect that the current bi-modes would be slower by a few minutes as their acceleration is not as potent of that of an electric train.
I have a feeling London Kings Cross and Cleethorpes via Lincoln Central, Market Rasen and Grimsby Town, could be a very important service for LNER.
Interiors
I can see a new lightweight and more energy efficient interior being developed for these trains.
In addition some of the routes, where they could be used are popular with cyclists and the current Hitachi trains are not the best for bicycles.
Battery Charging
Range On Batteries
I have left this to last, as it depends on so many factors, including the route and the quality of the driving or the Automatic Train Control
Earlier, I estimated that a five-car train with all three diesel engines replaced by batteries, when trundling around Lincolnshire, Oxfordshire or Wiltshire could have range of up to 100 miles.
That sort of distance would be very useful and would include.
- Ely and Norwich
- Newark and Cleethorpes
- Salisbury and Exeter
It might even allow a round trip between the East Coast Main Line and Hull.
The Ultimate Battery Train
This press release from Hitachi is entitled Hitachi And Eversholt Rail To Develop GWR Intercity Battery Hybrid Train – Offering Fuel Savings Of More Than 20%.
This is a paragraph.
The projected improvements in battery technology – particularly in power output and charge – create opportunities to replace incrementally more diesel engines on long distance trains. With the ambition to create a fully electric-battery intercity train – that can travel the full journey between London and Penzance – by the late 2040s, in line with the UK’s 2050 net zero emissions target.
Consider.
- Three batteries would on my calculations give a hundred mile range.
- Would a train with no diesel engines mean that fuel tanks, radiators and other gubbins could be removed and more or large batteries could be added.
- Could smaller batteries be added to the two driving cars?
- By 2030, let alone 2040, battery energy density will have increased.
I suspect that one way or another these trains could have a range on battery power of between 130 and 140 miles.
This would certainly be handy in Scotland for the two routes to the North.
- Haymarket and Aberdeen, which is 130 miles without electrification.
- Stirling and Inverness, which is 111 miles without electrification, if the current wires are extended from Stirling to Perth, which is being considered by the Scottish Government.
The various sections of the London Paddington to Penzance route are as follows.
- Paddington and Newbury – 53 miles – electrified
- Newbury and Taunton – 90 miles – not electrified
- Taunton and Exeter – 31 miles – not electrified
- Exeter and Plymouth – 52 miles – not electrified
- Plymouth and Penzance – 79 miles – not electrified
The total length of the section without electrification between Penzance and Newbury is a distance of 252 miles.
This means that the train will need a battery charge en route.
I think there are three possibilities.
- Trains can take up to seven minutes for a stop at Plymouth. As London and Plymouth trains will need to recharge at Plymouth before returning to London, Plymouth station could be fitted with comprehensive recharge facilities for all trains passing through. Perhaps the ideal solution would be to electrify all lines and platforms at Plymouth.
- Between Taunton and Exeter, the rail line runs alongside the M5 motorway. This would surely be an ideal section to electrify, as it would enable battery electric trains to run between Exeter and both Newbury and Bristol.
- As some trains terminate at Exeter, there would probably need to be charging facilities there.
I believe that the date of the late 2040s is being overly pessimistic.
I suspect that by 2040 we’ll be seeing trains between London and Aberdeen, Inverness and Penzance doing the trips without a drop of diesel.
But Hitachi are making a promise of London and Penzance by zero-carbon trains, by the late-2040s, because they know they can keep it.
And Passengers and the Government won’t mind the trains being early!
Conclusion
This could be a very useful train to add to Hitachi’s product line.
Luton DART Fly Through
This video does what it says in the title.
It certainly looks like the DART will greatly improve the experience of getting to Luton Airport.
Thoughts On Batteries In East Midland Railway’s Class 810 Trains
Since Hitachi announced the Regional Battery Train in July 2020, which I wrote about in Hyperdrive Innovation And Hitachi Rail To Develop Battery Tech For Trains, I suspect things have moved on.
This is Hitachi’s infographic for the Regional Battery Train.
Note.
- The train has a range of 90 km/56 miles on battery power.
- Speed is given at between 144 kph/90 mph and 162 kph/100 mph
- The performance using electrification is not given, but it is probably the same as similar trains, such as Class 801 or Class 385 trains.
- Hitachi has identified its fleets of 275 trains as potential early recipients.
It is also not stated how many of the three diesel engines in a Class 800 or Class 802 trains will be replaced by batteries.
I suspect if the batteries can be easily changed for diesel engines, operators will be able to swap diesel engines and battery packs according to the routes.
Batteries In Class 803 Trains
I first wrote about the Class 803 trains for East Coast Trains in Trains Ordered For 2021 Launch Of ‘High-Quality, Low Fare’ London – Edinburgh Service, which I posted in March 2019.
This sentence from Wikipedia, describes a big difference between Class 803 and Class 801 trains.
Unlike the Class 801, another non-bi-mode AT300 variant which despite being designed only for electrified routes carries a diesel engine per unit for emergency use, the new units will not be fitted with any, and so would not be able to propel themselves in the event of a power failure. They will however be fitted with batteries to enable the train’s on-board services to be maintained, in case the primary electrical supplies would face a failure.
Nothing is said about how the battery is charged. It will probably be charged from the overhead power, when it is working.
The Intercity Tri-Mode Battery Train
Hitachi announced the Intercity Tri-Mode Battery Train in this press release in December 2020.
This is Hitachi’s infographic for the Intercity Tri-Mode Battery Train.
Note.
- The train is battery-powered in stations and whilst accelerating away.
- It says that only one engine will be replaced by batteries.
- Fuel and carbon savings of 20 % are claimed.
Nothing has been said in anything, I’ve read about these trains, as to whether there is regenerative braking to batteries. I would be very surprised if fuel and carbon savings of 20 % could be attained without regenerative braking to batteries.
In Do Class 800/801/802 Trains Use Batteries For Regenerative Braking?, I discussed the question in the title.
This is a shortened version of what I said in that post.
If you type “Class 800 regenerative braking” into Google, you will find this document on the Hitachi Rail web site, which is entitled Development of Class 800/801 High-speed Rolling Stock for UK Intercity Express Programme.
If you search for brake in the document, you find this paragraph.
In addition to the GU, other components installed under the floor of drive cars include the traction converter, fuel tank, fire protection system, and brake system.
Note that GU stands for generator unit.
The document provides this schematic of the traction system.
Note that BC which is described as battery charger.
Is that for a future traction battery or a smaller one used for hotel power as in the Class 803 train?
As a Control and Electrical Engineer, it strikes me that it wouldn’t be the most difficult problem to add a traction battery to the system.
From what Hitachi have indicated in videos, it appears that they are aiming for the battery packs to be a direct replacement for the generator unit.
Generator Unit Arrangement In Class 810 Trains
When I wrote Rock Rail Wins Again!, which was about the ordering of these trains, the reason for four engines wasn’t known.
It now appears, that the extra power is needed to get the same 125 mph performance on diesel.
The formation of a five-car Class 802 train is as follows.
DPTS-MS-MS-MC-DPTF
Note.
- The three generator units are in the three middle cars.
- The three middle cars are motored.
- The two driver cars are trailer cars.
How are Hitachi going to put four generator units into the three middle cars?
- I wonder if, the engines can be paired, with some auxiliaries like fuel-tanks and radiators shared between the generators.
- A well-designed pair might take up less space than two singles.
- A pair could go in the centre car and singles either side.
It will be interesting to see what the arrangement is, when it is disclosed.
Is there the possibility, that some of the mathematics for the Intercity Tri-Mode Battery Train has indicated that a combination of generator units and battery packs can give the required 125 mph performance?
- Battery packs could need less space than diesel generators.
- Regenerative braking could be used to charge the batteries.
- How far would the train be able to travel without electrification?
- Trains would not run the diesel engines in the station.
- Could the fuel and carbon savings of 20 %, that are promised for the Intercity Tri-Mode Battery Train, be realised?
There may be a train buried in the mathematics, that with some discontinuous electrification could handle the East Midlands Railway Intercity services, that generates only a small amount of carbon!
Would A Mix Of Diesel Generators And Battery Packs Enable 125 mph Running?
Consider.
- The trial Intercity Tri-Mode Battery Train intended for the London Paddington and Penzance route, will probably have two diesel generators and a battery pack according to what Hitachi have said in their infographic for the Intercity Tri-Mode Battery Train.
- East of Plymouth some of the stretches of the route are challenging, which resulted in the development and ordering of Class 802 trains, that are more powerful, than the Class 800 trains used on easier routes.
- An Intercity Tri-Mode Battery Train with two diesel generators and a battery pack, needs to be as powerful as a Class 802 train with three diesel generators.
- So effectively does that mean that in the right installation with top class controlling software, that in fast running, a battery pack can be considered equivalent to a diesel generator?
I don’t know, but if it’s possible, it does bring other advantages.
- Fuel and carbon savings of 20 %
- No diesel running in stations or whilst accelerating away.
- Better passenger environment.
Configurations of 3-plus-1 and 2-plus 2 might be possible.
EMR Set To Retain Liverpool – Nottingham Service
The title of this post is the same as that of this article on Railway Gazette.
This is the introductory paragraph.
The Department for Transport has confirmed to East Midlands Railway that, for the time being at least, it is no longer planning to transfer the Liverpool Lime Street – Nottingham service to TransPennine Express from the December 2021 timetable change.
My experience of the service is limited these days, but occasionally, I do use the Liverpool and Sheffield section of the service to get across the Pennines on trips North.
In January 2020, I had a horrendous trip on an overcrowded train composed of several one-car Class 153 trains, which I wrote about in Mule Trains Between Liverpool And Norwich.
This is not the way to run a long distance service, which takes over five and a half hours.
The plan to improve the service involves splitting it into two from the December 2021 timetable change.
- Liverpool and Nottingham
- Derby and Norwich
It was thought that the Liverpool and Nottingham section would be going to TransPennine Express (TPE).
These points summarise the Railway Gazette article.
- TPE were training drivers and that has now stopped.
- EMR have told staff, they will be keeping both services.
- The service will still be split.
- EMR will not have enough trains to run the split service.
This paragraph sums up what could happen to run the service.
One option favoured by industry insiders would see EMR take on 15 Class 185 Desiro trainsets which are due to be released by TPE during 2021 as its fleet renewal programme concludes. These trains are maintained by Siemens at its conveniently located Ardwick depot in Manchester.
I see this splitting, as being a pragmatic solution to the problems of running a long service, with a very varied loading at various parts of the route.
- As one company runs both sections, the changeover can be arranged to be very passenger-friendly.
- EMR manage the possible change stations at Derby and Nottingham.
- Passengers can be given proper care in the changeover.
- Derby gets a direct connection to Peterborough, Cambridge and Norwich.
With my East Anglian hat on, I can see advantages in the split, as I regularly used to travel as far as Derby or Nottingham, when I lived in the East, but only once took the full service to Liverpool.
I have a few thoughts.
Capacity Between Liverpool And Nottingham
This section of the service is generally run by a pair of Class 158 trains, which have a capacity of around 140 each or 280 in total.
The Class 185 trains have three-cars and a capacity of 180 seats.
Currently, Liverpool and Nottingham takes just under two hours and forty minutes, which would make for a comfortable six-hour round trip. This would mean, that an hourly service between the two cities, will need a fleet of six trains.
Under Future in the Wikipedia entry for Class 185 trains, this is said.
Following the August 2020 decision not to transfer the Liverpool Lime Street to Nottingham route to TransPennine Express, East Midlands Railway could opt to take on the 15 trainsets due to be released from TPE to run this route.
Fifteen trains would be more than enough trains to run a pair on each hourly service and perhaps run some extra services.
Pairs of Class 185 trains between Liverpool and Nottingham would go a long way to solve capacity problems on this route.
Calling At Derby
The current service between Liverpool and Norwich doesn’t call at Derby, as it uses the Erewash Valley Line via Alfreton.
The proposed Eastern portion of the split service has been proposed to terminate at Derby, so passengers would change at Nottingham, if they wanted to travel to Sheffield, Manchester or Liverpool.
As East Midlands Railway, runs both services, they can optimise the service to serve and attract the most passengers.
Preparation For High Speed Two At East Midlands Hub Station
Eventually, the two halves of the Liverpool and Norwich service must surely call at the future East Midlands Hub station for High Speed Two, so future routes must fit in with the plans for High Speed Two.
But there’ll be plenty of time to get that right.
Interchange At Nottingham
I’m sure a quick and easy interchange can be performed at Nottingham.
In the simplest interchange, the two services could share a platform and passengers could just walk between the two trains on the level.
The following sequence could be used at Nottingham.
- The train from Derby to Norwich would arrive in the platform and stop at the Eastern end of the platform.
- The train from Liverpool to Nottingham would arrive in the platform and stop close behind it.
- Passengers on the train from Liverpool, who wanted to take the Norwich train, would simply walk a along the platform and board the train.
- The Norwich train would leave when ready.
- The train from Liverpool would stay where it had stopped and be prepared for the return trip to Liverpool.
- , The next train from Norwich to Derby would pull in behind the Liverpool train.
- Passengers on the train from Norwich, who wanted to take the Liverpool train, would simply walk a along the platform and board the train.
- The Liverpool train would leave when ready.
- Finally, the Norwich to Derby train would leave for Derby.
Only one platform would be needed at Nottingham station, that would need to be long enough to handle the two trains.
Between Norwich And Derby
This is the only section of the Liverpool and Norwich route with any electrification.
- Currently about thirty miles between Grantham and Peterborough are electrified.
- The lines around Ely and Norwich are also electrified.
I think that Ely and Peterborough will be electrified earlier than other lines.
- It would be part of an electrified freight route between Felixstowe and the East Coast Main Line.
- It would enable electric passenger trains between Cambridge and the North.
- It would mean the Ipswich and Peterborough services could be run by battery electric trains.
- It could be a useful electrified diversion route to London, during engineering works.
,This extra electrification, would also mean that Norwich and Derby would probably be within range of battery electric trains.
Stadler have stated that Greater Anglia’s Class 755 trains can be converted from bi-mode into battery electric trains.
So as Greater Anglia and East Midlands Railway are both Abellio companies, could we see battery electric operation on the around 150 miles between Norwich and Derby?
Conclusion
Splitting the Liverpool and Norwich service opens up a lot of possibilities to improve the service.
Testing Begins On Midland Main Line Electrification
The title of this post, is the same as that of this article on Rail Magazine.
- From the article, it looks like the first part of mechanical testing has been completed as planned and unpowered pantograph runs have been performed at up to 110 mph.
- It does seem to me, that this thirty miles of electrification has avoided the troubles that have plagued similar projects in recent years.
Perhaps the good progress on this electrification, is making the government think again about early electrification of all of the Midland Main Line
In Hopes Rekindled Of Full Midland Main Line Electrification. I showed how battery electric Class 810 trains would be able to work the route.
This was my conclusion of that earlier post.
It appears that both the Nottingham and Sheffield services can be run using battery electric Class 810 trains.
- All four diesel engines in the Class 810 trains would need to be replaced with batteries.
- The route between Clay Cross North Junction and Sheffield station, which will be shared with High Speed Two, will need to be electrified.
- Charging facilities for the battery electric trains will need to be provided at Nottingham.
On the other hand using battery electric trains mean the two tricky sections of the Derwent Valley Mills and Leicester station and possibly others, won’t need to be electrified to enable electric trains to run on the East Midlands Railway network.
Will it be the first main line service in the world, run by battery electric trains?
There was one thing, that wasn’t available, a month ago, when I wrote that post – A charging system for battery electric trains, that could be installed at Nottingham.
In Vivarail’s Plans For Zero-Emission Trains, I report on Adrian Shooter’s plans for Vivarail, which are outlined in a video by Modern Railways.
Ar one point he says this see about Vivarail’s Fast Charge system.
The system has now been given preliminary approval to be installed as the UK’s standard charging system for any make of train.
I may have got the word’s slightly wrong, but I believe the overall message is correct.
So could we see a Hitachi Class 810 train using Vivarail’s patented Fast Charge system at Nottingham?
In Interview: Hitachi’s Nick Hughes On Driving Innovation In Rail Propulsion, Nick Hughes of Hitachi is quoted as saying.
Rail is going to become increasingly digitised and integrated into other sectors involved in smart cities, mobility-as-a-service and flexible green grid. Therefore, Hitachi Rail won’t be able to stay at the forefront of innovation by its self. This is why we are focused on building partnerships with other like-minded, innovative, clean tech companies like Hyperdrive Innovation, Perpetuum and Hitachi group companies such as Hitachi ABB.
Does Vivarail fit that philosophy? In my view, it does!
This Hitachi infographic gives the specification of their Regional Battery Train.
Note.
- The range on battery power is 90 km or 56 miles at up to 100 mph.
- Class 810 trains could be converted to battery electric trains by replacing the diesel engines with batteries.
- As the electrification has reached Kettering. there is only 55 miles between London St Pancras and Nottingham without electrification.
I could see Class 810 trains running between St. Pancras and Nottingham on delivery, provided the following projects have been completed.
- Hitachi have been able to give the Class 810 trains a range of say 60 miles on batteries.
- Hitachi have modified their trains, so they can be recharged by a Vivarail Fast Charge system in fifteen minutes.
- Vivarail have installed a Fast Charge facility at Nottingham station.
Network Rail are planning to extend the electrification from Kettering to Market Harborough, which would reduce the distance without electrification to under 50 miles. This would make running battery electric trains between London St. Pancras and Nottingham even easier.
Expanding The Network
If I am putting two and two together correctly and Hitachi have turned to Vivarail to provide a charging system or a licence for the use of the technology, I am sure, it would be possible to create a comprehensive network of battery electric trains.
Consider.
- Hitachi should be able to squeeze a sixty mile range at 90-100 mph from a battery-equipped Class 810 trains.
- Market Harborough and Derby are about 47 miles apart.
- Derby and Sheffield are about 36 miles apart
- Sheffield and Leeds are about 48 miles apart
- Corby and Leicester are about 41 miles apart.
Vivarail Fast Charge systems at Derby, Leicester and Sheffield would enable the following routes to be run using battery electric trains.
- London St. Pancras and Sheffield via Derby – Fast Charging at Derby and Sheffield
- London St. Pancras and Leeds via Derby and Sheffield – Fast Charging at Derby and Sheffield
- London St. Pancras and Sheffield via the Erewash Valley Line – Fast Charging at Ilkeston (?) and Sheffield
- London St. Pancras and Leicester via Corby – Fast Charging at Leicester
Note.
- The only extra electrification needed for the initial network would be between Kettering and Market Harborough.
- The Class 810 trains would all be identical.
- The Class 810 trains might even be built and delivered as battery electric trains
- Trains would also charge the batteries between London St. Pancras and Market Harborough, between London St. Pancras and Corby. and between Leeds and Wakefield Westgate.
The network can be extended by adding more electrification and Fast Charge systems.
Conclusion
The technologies of Hitachi and Vivarail seem complimentary and could result in a fully electric main line train network for East Midlands Railway.
Hopes Rekindled Of Full Midland Main Line Electrification
The title of this post, is the same as that of this article on Rail Magazine.
This is the key section of the article.
During a House of Commons debate on transport on September 17, HS2 Minister Andrew Stephenson said in response to a question from Alex Norris (Labour/Co-op, Nottingham North): “We are currently delivering the Midland Main Line upgrade, which includes electrification from London to Kettering, with additional electrification to Market Harborough being developed.
“Further electrification of the MML is currently at an early stage, but it is being examined by Network Rail.”
Stephenson said the DfT will continue to work closely with NR on the development of a proposal that would include approaches to advancing the delivery of electrification across the route.
The title of the article, probably sums it up well.
Electrification Of The Midland Main Line
Having read lots of stories about electrification of Midland Main Line, I think the following must be born in mind.
- Electrification on the line will reach as far North as Market Harborough station.
- The route between Sheffield station and Clay Cross North Junction will be shared with High Speed Two. It will obviously need to be electrified for High Speed Two.
- The section of the Midland Main Line between Derby and Clay Cross North Junction, runs through the World Heritage Site of the Derwent Valley Mills. The Heritage Taliban will love the electrification, with a vengeance.
- Electrification through Leicester station could be tricky, as the station building and the A6 road are over the tracks and there is limited clearance. Electrification could involve major disruption to the trains for some time.
These are some of the distances involved of sections of the route that are not electrified.
- Market Harborough and Derby are 54 miles apart.
- Market Harborough and Clay Cross North Junction are 67 miles apart.
- Market Harborough and Chesterfield are 70 miles apart.
- Market Harborough and Nottingham are 44 miles apart
- Market Harborough and Leicester are 16 miles apart.
- Derby and Clay Cross North Junction are 21 miles apart.
Since 2017, when electrification for the full route was originally abandoned, there have been big changes in rolling stock technology.
The biggest change has been the development of battery trains.
Hitachi’s Regional Battery Trains
This infographic from Hitachi gives the specification for their Regional Battery Train.
Note.
- The trains have a range of 56 miles on battery power.
- The trains can cruise at 100 mph on battery power.
- Hitachi have said that all of their AT-300 trains can be converted into Regional Battery Trains.
- Trains are converted by removing the diesel engines and replacing them with battery packs.
- I suspect these battery packs look like a diesel engine in terms of control inputs and performance to the driver and the train’s computer.
It is extremely likely, that the bi-mode Class 810 trains, which are a version of the AT-300 train, that have been ordered for the Midland Main Line can be converted into Regional Battery Trains.
These trains have four diesel engines, as opposed to the Class 800 and Class 802 trains, which only have three.
These are reasons, why the trains could need four engines.
- The trains need more power to work the Midland Main Line. I think this is unlikely.
- Four engine positions gives ,more flexibility when converting to Regional Battery Trains.
- Four battery packs could give a longer range of up to 120 kilometres or 75 miles.
It could just be, that Hitachi are just being conservative, as engines can easily be removed or replaced. The fifth-car might even be fitted with all the wiring and other gubbins, so that a fifth-engine or battery pack can be added.
I suspect the train’s computer works on a Plug-And-Play principle, so when the train is started, it looks round each car to see how many diesel engines and battery packs are available and it then controls the train according to what power is available.
London St. Pancras And Sheffield By Battery Electric Train
Any battery electric train going between London St. Pancras and Sheffield will need to be charged, at both ends of the route.
- At the London end, it will use the electrification currently being erected as far as Market Harborough station.
- At the Sheffield end, the easiest way to charge the trains, would be to bring forward the electrification and updating between Sheffield station and Clay Cross North Junction, that is needed for High Speed Two.
This will leave a 67 mile gap in the electrification between Market Harborough station and Clay Cross North junction.
It looks to me, the Class 810 trains should be able to run between London St. Pancras and Sheffield, after the following projects are undertaken.
- Class 810 trains are given four battery packs and a battery range of 75 miles.
- Electrification is installed between Sheffield station and Clay Cross North Junction.
Trains would need to leave Market Harborough station going North and Clay Cross Junction going South with full batteries.
Note.
- Trains currently take over an hour to go between Chesterfield to Sheffield and then back to Chesterfield, which would be more than enough to fully charge the batteries.
- Trains currently take around an hour to go between London St. Pancras and Market Harborough, which would be more than enough to fully charge the batteries.
- Chesterfield station is only three miles further, so if power changeover, needed to be in a station, it could be performed there.
- Leeds and Sheffield are under fifty miles apart and as both stations would be electrified, London St. Pancras and Sheffield services could be extended to start and finish at Leeds.
London St. Pancras and Sheffield can be run by battery electric trains.
London St. Pancras And Nottingham By Battery Electric Train
Could a battery electric train go from Market Harborough to Nottingham and back, after being fully-charged on the hour-long trip from London?
- The trip is 44 miles each way or 88 miles for a round trip.
- Services have either three or eight stops, of which two or three respectively are at stations without electrification.
- Trains seem to take over thirty minutes to turnback at Nottingham station.
Extra power North of Market Harborough will also be needed.
- To provide hotel power for the train, during turnback at Nottingham station.
- To compensate for power losses at station stops.
If 75 miles is the maximum battery range, I doubt that a round trip is possible.
I also believe, that Hitachi must be developing a practical solution to charging a train during turnback, at a station like Nottingham, where trains take nearly thirty minutes to turnback.
If the Class 810 trains have a battery range of 75 miles, they would be able to handle the London St. Pancras and Nottingham service, with charging at Nottingham.
Conclusion
It appears that both the Nottingham and Sheffield services can be run using battery electric Class 810 trains.
- All four diesel engines in the Class 810 trains would need to be replaced with batteries.
- The route between Clay Cross North Junction and Sheffield station, which will be shared with High Speed Two, will need to be electrified.
- Charging facilities for the battery electric trains will need to be provided at Nottingham.
On the other hand using battery electric trains mean the two tricky sections of the Derwent Valley Mills and Leicester station and possibly others, won’t need to be electrified to enable electric trains to run on the East Midlands Railway network.
Will it be the first main line service in the world, run by battery electric trains?
Beeching Reversal – More Stopping Services At Radcliffe-on-Trent And Bottesford Stations On The Poacher Line Between Grantham And Nottingham
This is one of the Beeching Reversal projects that the Government and Network Rail are proposing to reverse some of the Beeching cuts.
It is one of a pair of submissions from the local MP; Alicia Kearns. The other is Increased Services To Nottingham And Leicester, via Syston And Loughborough From Melton Mowbray.
When I heard of the MP’s submissions, I wrote MP Campaigns To Extend Train Services For Melton Borough and the following uses that post as a starting point.
Wikipedia says this about services at Bottesford station on the Poacher Line.
- The service is generally every two hours to Nottingham in the West and Skegness in the East.
- Some trains call at Grantham and have a connection to the East Coast Main Line.
- LNER services at Grantham connect to Doncaster, King’s Cross, Leeds, Lincoln, Peterborough, Stevenage, Wakefield and York.
- Bottesford is in the Borough of Melton and their is no direct rail service between Bottesford and Melton. A typical journey takes over two-and-a-half hours with two changes, that can include a wait of an hour at Leicester station.
- Bottesford is in the County of Leicester. There is no direct rail service between Bottesford and Leicester.
I think the MP has a point and an improved and more frequent service at Bottesford could be very beneficial.
- Many routes like this in the UK have a regular hourly service. Coastal stations with a regular hourly or better service include Blackpool South, Cleethorpes, Cromer, Exmouth, Felixstowe, Kings Lynn, Paignton, Scarborough and Sheringham
- I suspect many communities along the Poacher Line would benefit from a regular hourly service.
- All services calling at Grantham for East Coast Main Line services would be useful.
- Do services have a good interchange at Nottingham for Midland Main Line services?
Replacing 75 mph Class 153 and Class 156 trains with 100 mph Class 170 trains would probably be a big help.
Conclusion
It looks like improvements at Bottesford would not require any new expensive infrastructure.
But East Midlands Railway would need more trains and they would probably need to be faster too!




















