steveintoronto
Superstar
^ It's not "France", it's a local TER authority in Aquitaine for lightly used lines:
In Ontario, this would be like York or Waterloo Region rail if such existed.
https://en.wikipedia.org/wiki/Transport_express_régional
There's no way around this, catenary, if supplied properly (low impedance source) is still *by far* the best way to power trains *in most cases* and where the *business model shows advantage*. Battery, fuel cell and diesel-electric all have to lug their system weight in addition to the motors on the bogies. "Ah!" Some will proclaim. "But there's the traction transformer needed for high voltage overhead". A fraction of the weight they used to be, and now there's solid state xfrmrs, weigh next to nothing. Think the power supply in your computer. Think "switching supplies". For DC overhead systems, even that isn't needed, as per streetcars and LVDC metro vehicle type supplies (pretty much obsolete now save for integrating with existing systems, AC has so many advantages, and far better traction motors and control).
You'll note that other than failed prototypes, there's no heavy rail hydrogen locos, internal combustion or fuel cell. Hydrogen is incredibly disadvantaged in terms of power density to make sense in those cases.
It's excellent for toys...I wonder when the wind-up Lint (WuLint) is going to be available? lol...it's not so far fetched, there are functioning flywheel powered railcars in commercial service.
Parry People Movers - Wikipedia
https://en.wikipedia.org/wiki/Parry_People_Movers
Parry People Movers Ltd. (PPM) is a British company manufacturing lightweight trams and railcars that use flywheel energy storage (FES) to store energy for traction, allowing electric systems to operate without overhead wires or third rails, and railcars ...
Current usage · Earlier trials · Technology · Fleet
We can also build colonies on the Moon. The energy to do it is a fraction of what we produce on Earth.
Perhaps someone can explain why France, Germany et al are still building catenary if Hydrail is such an advantage?
One of many examples:
https://www.connexionfrance.com/index.php/French-news/France-on-track-for-hydrogen-train-roll-outMon 12 Nov 2018 10h03
Hydrogen-powered trains will be tested on four lines in New Aquitaine, regional MP Michel Delpon has confirmed.
The trains will operate on the Bordeaux-Soulac, Angoulême-Saintes-Royan, Bordeaux-Bergerac-Sarlat and Bordeaux-Périgueux-Limoges lines. The government expects the trains will be commercially operational by 2022.
Hydrogen trains have been in commercial use in Germany since September, where rail authorities have spent €81million to buy 14 engines.
A total €45million earmarked for electifying the Bordeaux-Soulac line in Nouvelle Aquitaine will now be spent buying hydrogen trains, which emit only water when travelling.
In the region, only 40% of the 3,250km of TER lines are electrified, according to President of the Regional Council Alain Rousset. Across France, 50% of rail lines are electrified.
[...]
In Ontario, this would be like York or Waterloo Region rail if such existed.
https://en.wikipedia.org/wiki/Transport_express_régional
Source impedance for battery supply can be very low, like catenary...for very short periods of time. Battery supply (and that's what these vehicles are, but *replenished at a slow rate* by fuel cells) still displays a consequence to thrust-to-weight ratio performance compared to catenary.I am still in the dark if hydrogen has similar benefits to electrification like fast acceleration.
There's no way around this, catenary, if supplied properly (low impedance source) is still *by far* the best way to power trains *in most cases* and where the *business model shows advantage*. Battery, fuel cell and diesel-electric all have to lug their system weight in addition to the motors on the bogies. "Ah!" Some will proclaim. "But there's the traction transformer needed for high voltage overhead". A fraction of the weight they used to be, and now there's solid state xfrmrs, weigh next to nothing. Think the power supply in your computer. Think "switching supplies". For DC overhead systems, even that isn't needed, as per streetcars and LVDC metro vehicle type supplies (pretty much obsolete now save for integrating with existing systems, AC has so many advantages, and far better traction motors and control).
You'll note that other than failed prototypes, there's no heavy rail hydrogen locos, internal combustion or fuel cell. Hydrogen is incredibly disadvantaged in terms of power density to make sense in those cases.
It's excellent for toys...I wonder when the wind-up Lint (WuLint) is going to be available? lol...it's not so far fetched, there are functioning flywheel powered railcars in commercial service.
Parry People Movers - Wikipedia
https://en.wikipedia.org/wiki/Parry_People_Movers
Parry People Movers Ltd. (PPM) is a British company manufacturing lightweight trams and railcars that use flywheel energy storage (FES) to store energy for traction, allowing electric systems to operate without overhead wires or third rails, and railcars ...
Current usage · Earlier trials · Technology · Fleet
It's a huge deal. Sorry to be so brusque, but I'm astounded how some fall for the line of how easy it is.I mean we have surplus energy so that's no big deal.
We can also build colonies on the Moon. The energy to do it is a fraction of what we produce on Earth.
Perhaps someone can explain why France, Germany et al are still building catenary if Hydrail is such an advantage?
One of many examples:
https://www.engie-ineo.fr/en/a-unique-new-generation-ocs-in-southwestern-france/A unique new-generation OCS in southwestern France
Occitanie 12.03.2018
A new milestone has been reached in the extensive overhead catenary system renovation project undertaken by ENGIE Ineo, agent of a consortium with Colas Rail, since the end of 2016 on the Toulouse to Bayonne railway. A second section of the new generation OCS* installed since September 2017 has now been activated by SNCF Réseau. Deployed for the first time on a line of this importance, this new technology, capable of withstanding a much stronger electric current, meets the requirements of the French government’s objectives concerning the restoration and modernisation of the country’s existing transportation network.
[...]
The first railway line of this magnitude to accommodate this new technology, the section between Tarbes and Montréjeau will be equipped with a specific system currently deployed in the Paris region, on the RER B regional express line. This system will subsequently be installed on other lines of the French rail network.
[...]
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