The Anonymous Widower

Great Western Railway’s Battery Train Sets New Distance Record

The title of this post, is the same as that of this press release from Great Western Railway.

This is the sub-heading.

Great Western Railway’s innovative FastCharge battery trial has achieved another significant step – just days after laying claim to a battery train UK distance record without recharging.

These two paragraphs add more detail.

The train demonstrated its capability on Wednesday by travelling a UK record of 86 miles (138km) on battery power alone and without recharging.

Today the Class 230 battery train completed a 70-mile move from Long Marston to Reading Train Care Depot – using just 45 per cent of its battery capacity. GWR’s team of specialist engineers on board the train claim it could have travelled more than 120 miles on a single charge.

There is also this impressive video.

Note.

  1. In the video, the train is cruising at 36 mph.
  2. The top speed of the D78 Stock was 45 mph.
  3. The train looks in excellent condition.

This is a total game-changer for battery-electric trains in the UK.

The train makers, who have demonstrated battery-electric trains; Alstom/Bombardier, CAF, Hitachi, Siemens and Stadler will have to up their distances on battery power to at least 86 miles and possibly 120 miles, as who would want their new product to be outdistanced by second-hand forty-year-old upcycled London Underground trains?

I have some further thoughts.

The Trains Performance In The Real World

Dr. Simon Green, who is GWR’s Engineering Director, said this.

It’s also worth noting that in reaching the 86 miles on Wednesday, the train was operating in a real-world environment, at speeds of up to 60mph, stopping and starting over a hilly route, with elevation changes of up to 200m.

The train exceeded the 84 miles (135km) recorded by a Stadler Class 777 under test conditions in 2022 – believed to have been the greatest distance travelled by a battery train designed for the UK.

Note that the train was running at up to 60 mph.

Timings For The Mid-Cornwall Metro

This map shows the Mid-Cornwall Metro.

I have been looking at the Mid-Cornwall Metro and this service will share the Cornish Main Line with faster services between Par and Truro.

  • Expresses and the Mid-Cornwall Metro will both stop at Par, St. Austell and Truro.
  • Par and Truro is a distance of 19 miles.
  • Expresses between Penzance and Plymouth take around 22-23 minutes to go between Par and Truro.
  • This is an average speed of around 50-52 mph.

It looks to me, that there is scope for the Mid-Cornwall Metro and the express trains to run at similar speeds between Par and Truro.

  • If the Mid-Cornwall Metro used Class 230 trains running on batteries, these trains should be fast enough to keep out of the way of the expresses.
  • Par station has an island platform, where the Mid-Cornwall Metro uses one side (Platform 3) and expresses use the other (Platform 2).

Perhaps, if the timetable was something like this, it would give the best services to passengers.

  • All expresses would use Platform 2, if they were stopping at Par station. The current track layout allows this.
  • For Westbound passengers the Mid-Cornwall Metro would stop in Platform 3 and the express would stop in Platform 2, so that passengers going to beyond Truro on the Cornish Main Line could to the express on the other platform.
  • Between Par and Truro, the Mid-Cornwall Metro would run a couple of minutes behind the express.
  • Passengers for the Falmouth Branch could swap trains at Par on wait for the Metro at St. Austell or Truro.
  • For Eastbound passengers, between Par and Truro, the Mid-Cornwall Metro would run a couple of minutes behind the express.
  • At Par, the Mid-Cornwall Metro would stop in Platform 3 and the express would stop in Platform 2.
  • The express would wait at Par for the Mid-Cornwall Metro.
  • Passengers for Plymouth and London Paddington would change trains at Par for the express on the other platform.
  • Passengers for the Newquay Branch on the express would swap trains at Par or wait for the Metro at St. Austell or Truro.

I suspect there are other patterns, but something like this will combine express services with the Mid-Cornwall Metro.

Simon’s Vision

Simon Green also says this about his vision of how the trains and the related FastCharge technology could be used.

GWR’s FastCharge technology has been designed to solve the problem of delivering reliable, battery-only trains capable of fulfilling timetable services on branch lines, eliminating the use of diesel traction and helping to meet the Government and wider rail industry’s target to reach net-zero carbon emissions by 2050.

The use of batteries for extended operation has typically been constrained by their range and meant widespread implementation has, until now, not been possible. It also negates the need for overhead electric lines which are expensive, time consuming to install and impact the landscape.

He’s judging the system as a whole, which is the only way to do it.

Where Could Class 230 Trains Be Used On The Great Western Railway?

These are a few ideas.

  • Slough and Windsor & Eton Central – 2.8 miles – 3 cars – FastCharge at Slough
  • Maidenhead and Marlow – 7.1 miles – 2 or possibly 3 cars – FastCharge at Maidenhead
  • Twyford and Henley-on-Thames – 4.6 miles – 3 cars – FastCharge at Twyford
  • Reading and Basingstoke – 15.4 miles – 3 cars – FastCharge at Basingstoke
  • Weston-super-Mare and Severn Beach – 32.5 miles – 3 cars – FastCharge at Severn Beach
  • Bristol Temple Meads to Avonmouth 8.9 miles – 2 cars – FastCharge at Avonmouth

Bourne End station, where there is a reverse may restrict the length of the service to Marlow.

February 18, 2024 - Posted by | Design, Transport/Travel | , , , , , , , ,

14 Comments »

  1. Well it may be true about the rest but Stadler already have recorded 224 kms or 139 miles back in 2021 with their AKKU multiple unit. Seriously isn’t it all about the battery capacity and the train weight?

    Comment by fammorris | February 18, 2024 | Reply

    • Partly, but we are getting these long ranges because of good design, aerodynamics and weight distribution.

      I’m quite surprised that these trains can do 86 miles, but it does indicate that a battery-electric Aventra or a Hitachi 802 could have a sensational range.

      If you stand on the platform and one goes past there’s very little wind noise, indicating little waste of energy. Bombardier may have had some help from aerodynamicists to make it an efficient train.

      I feel a major train manufacturer will take out a licence for the FastCharge technology, as this could be something big, with a specially designed battery-electric train.

      Comment by AnonW | February 18, 2024 | Reply

  2. Of course you’re right about Aerodynamic influence as applied to modern rail vehicles although weight distribution will be a marginal issue that train designers have been more than aware of. BTW, Wikipedia can be a great source but often gets things wrong as it does for the new traction motors fot the modernised Central Line 92 Stock. D78 Stock like all post WW2 Underground passenger stock had a maximum speed of 60 mph, not 45.

    Comment by fammorris | February 18, 2024 | Reply

    • I’d noticed that Simon Green, said the train was running at up to 60 mph in their 86 mile run.

      Comment by AnonW | February 18, 2024 | Reply

  3. AFAIK Vivarail and Stadler use the same batteries, from the German company Hoppecke, so I would expect them to have similar ranges. And the only likely change is that future versions will be even better, especially once solid-state batteries start to appear. I see this latest stat less as a game changer and more as a confirmation of what those of us who monitor this stuff have known for some time. Namely, that BEMUs are highly capable, and it’s high time that they replaced outdated diesel technology.

    Comment by Peter Robins | February 18, 2024 | Reply

  4. As I’m talking to an electric engineering graduate I should have said Nominal Rated Speed, the motors pre Central Line were compound dc machines 🙂

    Comment by fammorris | February 18, 2024 | Reply

  5. you have to wonder why they need fast charge for the Greenford trial then!

    Comment by nickrl | February 19, 2024 | Reply

    • Yes, it is all rather strange. The Greenford line is around 4km, say 8km there and back, or 5 miles. As there’s already electrification at the Ealing end, all you need is a battery that can manage say 10 miles to play safe. In fact, you probably don’t need that much as there’ll be some braking power generated. It would make much more sense to run the trial on some of the longer lines in the SW, where’s there’s no electrification.

      Comment by Peter Robins | February 19, 2024 | Reply

      • The thing about Greenford and West Ealing is that there is an easy bus alternative, so if there is a failure during testing, passengers will not be totally inconvenienced.

        I suspect too, it would be easier than the other routes to organise a Rail Replacement Bus.

        There are also sidings nearby, where the train can be stored.

        It was also an easy station to put in the charger. And there is one of the main Elizabeth Line sub-stations about 100 metres away.

        I also suspect that GWR have got the BBC all ready to film the first train. Easier to organise at West Ealing.

        Comment by AnonW | February 19, 2024

      • AIUI, the trial trains won’t be carrying passengers. They’ll be running in tandem with the existing service.

        Another irony is that the fast charge rail is itself fed by a bank of batteries.

        Comment by Peter Robins | February 19, 2024

  6. Regarding the supply to the two track-side battery banks, GWR’s press release suggests that these are continuously ‘trickle-charged’ from the grid with a 63 Amp connection akin to a domestic supply. 63 Amp suggests its a 3 phase supply rather than anything higher.

    Comment by fammorris | February 19, 2024 | Reply

    • I wouldn’t be surprised that the trackside battery packs are lead acid. I remember banks of lead-acid batteries in the 1950s and 1960s being used for an industrial process, that was shown on something like Tomorrow’s World.

      The BBC ought to rebroadcast that series as some of the more wacky ideas may now be possible.

      This guy is demonstrating welding with pair of car batteries.

      Comment by AnonW | February 19, 2024 | Reply


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