Ultra low emission traction drive system for hybrid light rail vehicles

Henning, Ulf; Thoolen, Fjm Frans; Lampérth, Michael; Berndt, J.; Lohner, Andreas; Janig, N

doi:10.1109/speedam.2006.1649926

Cited by 10 publications

(8 citation statements)

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“…Henning et al [14] discuss in detail two options for energy storage in light rail vehicles: flywheels and ultracapacitors. Power densities of ultracapacitors and modern flywheels are similar, but flywheels offer higher energy density, which is better if acceleration times are longer (unit cited here offers 4 kWh, 300 kW at 375 kg compared to double that weight back in 1995).…”

Section: Applications Of Energy Saving Strategiesmentioning

confidence: 99%

Comparison of different tram cars in Poland basing on drive type, rated power and energy consumption

Kulesz

Sikora

2018

MATEC Web Conf.

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Paper deals with tram rolling stock used in Poland nowadays -overview of car types in operation is given. The detailed calculations of energy consumption by a given tram car running over a given route depend in particular on the work carried out (each route is characterized by, among other factors, its profile, length, number of turns, turn radii, number of stops -scheduled or otherwise, number of transferred passengers, number of brakings with possibility of energy recuperation). Results of energy consumption measurements for different car types in Warsaw are provided and analysed.

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Section: Applications Of Energy Saving Strategiesmentioning

confidence: 99%

Comparison of different tram cars in Poland basing on drive type, rated power and energy consumption

Kulesz

Sikora

2018

MATEC Web Conf.

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“…The most challenging operating conditions for storage devices on board of traction vehicles (LRVs, Metro-trains, DEMUS) are: -high number of load cycles during the vehicle lifetime -relatively short charge/discharge times -high charge and discharge power values Proposed storage technologies aiming at brake energy storage are UltraCaps or Flywheels, while batteries do not achieve the necessary load cycles, see [5,8,9]. Outstanding feature of our prototype vehicle is the operation in daily passenger service, and this even since September 2003.…”

Section: Introductionmentioning

confidence: 99%

Energy storage system with ultracaps on board of railway vehicles

Steiner

Klohr

Pagiela

2007

2007 European Conference on Power Electronics and Applications

162

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The on board energy storage system with Ultracaps for railway vehicles presented in this paper seems to be a reliable technical solution with an enormous energy saving potential. Bombardier Transportation has equipped one bogie of a prototype LRV (light rail vehicle) for the public transportation operator RNV in Mannheim with a MITRAC Energy Saver. Outstanding feature is the daily operation of the energy storage unit in daily passenger service, and this even since September 2003. The experiences are very positive. The measured traction energy saving of approximately 30% confirmed fully the former calculations. Running the energy storage device on board of a tram brings additionally following benefits:• a dramatic reduction of the peak power demand • "catenary free operation" on several hundred meters without power supply from the catenary • catenary free city center by on board storage and recharging stations Applying the energy storage devices in Metro systems has a similar effect as in case of LRVs. However the savings distribution in the whole system will be a little bit different. Due to higher regeneration capability of metro systems the expected share of the train propulsion saving will be lower. It will be compensated by a considerable reduction of the line losses, especially for systems with low rated catenary voltages (600V or 750V).Very promising are energy storage applications in propulsion systems of Diesel-Electrical Multiple Units (DEMUs). These vehicles lack possibilities to use the braking energy of the train. Energy storage systems on board of DEMUs bring high fuel savings together with the corresponding emission reduction. On top of that the energy storage leads to a booster effect -extra power during acceleration from the storage, by adding the limited weight of the MITRAC Energy Saver.

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“…Recent developments of flywheel technology have shown advantages in terms of mass and life span when used for regenerative braking [13][14][15]. The results presented here are for the specific case of low-speed regional diesel trains, which experience high braking losses.…”

Section: Discussionmentioning

confidence: 99%

The Effect of Driving Strategy on Hybrid Regional Diesel Trains

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Griffiths

Smith

2011

Proceedings of the Institution of Mechanical Engineers, Part F:

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Vehicle braking in non-electrified rail systems wastes energy. This article considers two approaches to reducing braking losses in regional diesel trains: efficient driving strategies and regenerative braking. The interaction of these two approaches is critical in specifying the requirements of a hybrid train and assessing the relative fuel saving. Computational models of conventional and hybrid diesel-hydrodynamic regional trains have been developed using real route data to generate a simple control algorithm and investigate the effect of driving strategy on fuel consumption and journey time. The current modelling predicts fuel savings of up to 40 per cent for the hybrid train when an aggressive control strategy is used. This fuel saving is halved when an efficient driving strategy is employed, which also reduces the required energy storage capacity. The model provides a tool for identifying effective control strategies which should be implemented to reduce fuel consumption for both conventional and hybrid trains.

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Ultra low emission traction drive system for hybrid light rail vehicles

Cited by 10 publications

References 0 publications

Comparison of different tram cars in Poland basing on drive type, rated power and energy consumption

Comparison of different tram cars in Poland basing on drive type, rated power and energy consumption

Energy storage system with ultracaps on board of railway vehicles

The Effect of Driving Strategy on Hybrid Regional Diesel Trains

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