Contact force control of an active pantograph for high speed trains

Ko, Myat Thiri; Yokoyama, Makoto; Yamashita, Yoshitaka; Kobayashi, Shigeyuki; Usuda, Takayuki

doi:10.1088/1742-6596/744/1/012151

Cited by 9 publications

(4 citation statements)

References 6 publications

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“…However, there are key differences between the PCU and the railway's current collection systems in terms of the dynamic analysis. The pantograph collects power from an overhead catenary with time-varying stiffness; thus, mass, stiffness and damping of the catenary interact with the pantograph's parameters and hence are involved in the dynamic modelling [17], [18]. Besides, the wave propagation in the contact line has an ever-growing impact on the contact force as the train speed increases [19].…”

Section: Introductionmentioning

confidence: 99%

Wheel Hub Active Power Collection Unit for Dynamic Conductive Road Charging

Ali

Pickert

Alharbi

et al. 2023

IEEE Trans. Transp. Electrific.

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Travelling hundreds of miles with an electric vehicle (EV) requires a large battery combined with available static fast chargers along the route. Dynamic conductive road charging is seen as an alternative as it allows EVs with smaller battery sizes to travel over longer distances and eliminates intermittent stops for charging. To transfer power during driving, power tracks must be aligned along the road and built either above, beside, or on the road. Therefore, the available EVs' power collection units (PCUs) are either mounted on the vehicle's roof or attached to the chassis. For mainstream applications changing the design of the roof structure and chassis of future EVs would involve enormous development costs. This paper presents an alternative for dynamic conductive road charging where the PCU is embedded in the wheel of an EV. Positioning the PCU in the wheel does not require any substantial change to the integrity of the car and the PCU can easily be removed or added, similar to changing tires. A stationary-hub wheel is used, which offsets the wheel drive motor to an eccentric position, resulting in a static hub that accommodates the PCU. The paper describes the design of the PCU and shows simulation results to support the design. An experimental platform was built to validate the concept. The design of the proposed PCU was based on an EV travelling at a high-speed (200km/h) on a motorway.

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Section: Introductionmentioning

confidence: 99%

Wheel Hub Active Power Collection Unit for Dynamic Conductive Road Charging

Ali

Pickert

Alharbi

et al. 2023

IEEE Trans. Transp. Electrific.

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“…To improve the process of the current collection, pantographs of electric rolling stock use automatic control devices to regulate pantograph static force [2,3]. They provide a more stable contact during the current collection process.…”

Section: Introductionmentioning

confidence: 99%

Experimental studies of pantograph head suspension equipped with controlled pneumatic elements

Sidorov,

Smerdin,

Mikhailov

et al. 2023

E3S Web Conf.

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The article describes factors which affect the panhead elastic elements performance during their operation. An analysis of these factors shows the need to use elastic elements with a controlled static characteristic at constant stiffness to ensure reliable current collection. The existing controlled pneumatic elements used in the panhead suspension of electric rolling stock are considered. Authors offer to use intra-spring pneumatic elements in panhead suspension. A study of the interaction of a pantograph and an overhead contact line is described. A methodology for experimental studies of pantographs equipped with controlled elastic elements in a head suspension has been developed. The experimental oscillation test system is described. An experiment was carried out according to the developed experiment design. The obtained data allow to build a regression model that characterises the standard deviation of the contact force on the frequency of vertical oscillations generated by the contact wire, the static force of the pantograph and the pressure in the intra-spring pneumatic element. The results of experimental studies indicate the preservation of the stiffness of the intra-spring pneumatic element within its static characteristics.

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“…To evaluate the contact quality, lots of methods have been developed to describe the interaction of the PCS [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. Besides, the aerodynamic effect [19][20][21][22][23], the vibration caused by track or contact wire irregularity [24][25][26], and the technology of active control pantograph [27][28][29][30][31][32][33] have been intensively studied to illustrate the PCS.…”

Section: Introductionmentioning

confidence: 99%

Effect of Pantograph’s Main Structure on the Contact Quality in High‐Speed Railway

Wang

Mei

2021

Shock and Vibration

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In general, the electrical energy is provided to the high-speed train through the pantograph-catenary sliding contact. The variation of the dynamic contact force is expected to be small enough to keep the good current collection quality and to extend the service life of the pantograph-catenary system. In this paper, the two tension wires of the catenary are discretized by the sine-series expansions, a multibody dynamics theory based on relative coordinates is adopted to describe the dynamic behavior of the pantograph, and the standard deviation (STD) of dynamic contact force is used as the indicator to evaluate the contact quality. The objective is to investigate how the variations of the pantograph’s main structure influence the contact quality, which may support the structural design and parameter optimization of the pantograph in high-speed railway.

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Contact force control of an active pantograph for high speed trains

Cited by 9 publications

References 6 publications

Wheel Hub Active Power Collection Unit for Dynamic Conductive Road Charging

Wheel Hub Active Power Collection Unit for Dynamic Conductive Road Charging

Experimental studies of pantograph head suspension equipped with controlled pneumatic elements

Effect of Pantograph’s Main Structure on the Contact Quality in High‐Speed Railway

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