Evaluation of Power Regeneration in Primary Suspension for a Railway Vehicle

Ruichen Wang, Zhiwei Wang

Research output: Contribution to journalArticle

Abstract

In order to improve the rail vehicle fuel economy, this paper presents the feasibility of power regenerating dampers (PRDs) in railway vehicle primary suspension systems, and the evaluation of the potential and recoverable power that can be obtained. The power regenerating damper is configured as a hydraulic-electromagnetic based railway primary vertical damper and is evaluated in both the ‘Parallel Mode’ and ‘Series Mode’ (with and without a viscous damper). Hydraulic configuration converts the linear behavior of the track into a unidirectional rotating of the generator, while the electromagnetic configuration provides a controllable damping force to the primary suspension system. Several case studies of generic railway vehicle primary suspension systems configured to include a power regenerating damper in the two different configuration modes are modelled using computer simulation. The simulations are carried out on measured tracks with typical irregularities for a generic UK passenger route. The performance of the modified vehicle is evaluated with respect to key performance indicator, including regenerated power, ride comfort and running safety. The results are concluded that PRDs are capable of replacing conventional primary vertical damper, regenerating the power and providing the desirable dynamic performances simultaneously. A peak power efficiency of 79.87% is obtained from ‘Series Mode’ on a top quality German ICE track (‘Track270’) at a vehicle speed of 160mph theoretically.
Original languageEnglish
JournalFrontiers of Mechanical Engineering
Publication statusAccepted/In press - 5 Sep 2019

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Hydraulics
Fuel economy
Rails
Damping
Computer simulation

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title = "Evaluation of Power Regeneration in Primary Suspension for a Railway Vehicle",
abstract = "In order to improve the rail vehicle fuel economy, this paper presents the feasibility of power regenerating dampers (PRDs) in railway vehicle primary suspension systems, and the evaluation of the potential and recoverable power that can be obtained. The power regenerating damper is configured as a hydraulic-electromagnetic based railway primary vertical damper and is evaluated in both the ‘Parallel Mode’ and ‘Series Mode’ (with and without a viscous damper). Hydraulic configuration converts the linear behavior of the track into a unidirectional rotating of the generator, while the electromagnetic configuration provides a controllable damping force to the primary suspension system. Several case studies of generic railway vehicle primary suspension systems configured to include a power regenerating damper in the two different configuration modes are modelled using computer simulation. The simulations are carried out on measured tracks with typical irregularities for a generic UK passenger route. The performance of the modified vehicle is evaluated with respect to key performance indicator, including regenerated power, ride comfort and running safety. The results are concluded that PRDs are capable of replacing conventional primary vertical damper, regenerating the power and providing the desirable dynamic performances simultaneously. A peak power efficiency of 79.87{\%} is obtained from ‘Series Mode’ on a top quality German ICE track (‘Track270’) at a vehicle speed of 160mph theoretically.",
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Evaluation of Power Regeneration in Primary Suspension for a Railway Vehicle. / Wang, Ruichen; Wang, Zhiwei.

In: Frontiers of Mechanical Engineering, 05.09.2019.

Research output: Contribution to journalArticle

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AU - Wang, Ruichen

AU - Wang, Zhiwei

PY - 2019/9/5

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N2 - In order to improve the rail vehicle fuel economy, this paper presents the feasibility of power regenerating dampers (PRDs) in railway vehicle primary suspension systems, and the evaluation of the potential and recoverable power that can be obtained. The power regenerating damper is configured as a hydraulic-electromagnetic based railway primary vertical damper and is evaluated in both the ‘Parallel Mode’ and ‘Series Mode’ (with and without a viscous damper). Hydraulic configuration converts the linear behavior of the track into a unidirectional rotating of the generator, while the electromagnetic configuration provides a controllable damping force to the primary suspension system. Several case studies of generic railway vehicle primary suspension systems configured to include a power regenerating damper in the two different configuration modes are modelled using computer simulation. The simulations are carried out on measured tracks with typical irregularities for a generic UK passenger route. The performance of the modified vehicle is evaluated with respect to key performance indicator, including regenerated power, ride comfort and running safety. The results are concluded that PRDs are capable of replacing conventional primary vertical damper, regenerating the power and providing the desirable dynamic performances simultaneously. A peak power efficiency of 79.87% is obtained from ‘Series Mode’ on a top quality German ICE track (‘Track270’) at a vehicle speed of 160mph theoretically.

AB - In order to improve the rail vehicle fuel economy, this paper presents the feasibility of power regenerating dampers (PRDs) in railway vehicle primary suspension systems, and the evaluation of the potential and recoverable power that can be obtained. The power regenerating damper is configured as a hydraulic-electromagnetic based railway primary vertical damper and is evaluated in both the ‘Parallel Mode’ and ‘Series Mode’ (with and without a viscous damper). Hydraulic configuration converts the linear behavior of the track into a unidirectional rotating of the generator, while the electromagnetic configuration provides a controllable damping force to the primary suspension system. Several case studies of generic railway vehicle primary suspension systems configured to include a power regenerating damper in the two different configuration modes are modelled using computer simulation. The simulations are carried out on measured tracks with typical irregularities for a generic UK passenger route. The performance of the modified vehicle is evaluated with respect to key performance indicator, including regenerated power, ride comfort and running safety. The results are concluded that PRDs are capable of replacing conventional primary vertical damper, regenerating the power and providing the desirable dynamic performances simultaneously. A peak power efficiency of 79.87% is obtained from ‘Series Mode’ on a top quality German ICE track (‘Track270’) at a vehicle speed of 160mph theoretically.

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KW - running safety

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