Analysis of torque transmitting behavior and wheel slip prevention control during regenerative braking for high speed EMU trains |
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| Authors: | Kun Xu Guo-Qing Xu Chun-Hua Zheng |
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| Institution: | 1. Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, and The Chinese University of Hong Kong, Shenzhen 518055, China;Shenzhen College of Advanced Technology, University of Chinese Academy of Sciences, Shenzhen 518055, China;2. School of Electronics and Information, Tongji University,Shanghai 201804, China;3. Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, and The Chinese University of Hong Kong, Shenzhen 518055, China |
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| Abstract: | The wheel-rail adhesion control for regenerative braking systems of high speed electric multiple unit trains is crucial to maintaining the stability,improving the adhesion utilization,and achieving deep energy recovery.There remain technical challenges mainly because of the nonlinear,uncertain,and varying features of wheel-rail contact conditions.This research analyzes the torque transmitting behavior during regenerative braking,and proposes a novel methodology to detect the wheel-rail adhesion stability.Then,applications to the wheel slip prevention during braking are investigated,and the optimal slip ratio control scheme is proposed,which is based on a novel optimal reference generation of the slip ratio and a robust sliding mode control.The proposed methodology achieves the optimal braking performancewithoutthewheel-railcontactinformation.Numerical simulation results for uncertain slippery rails verify the effectiveness of the proposed methodology. |
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| Keywords: | High speed electric multiple unit(EMU)train Regenerative braking Wheel-rail adhesion Optimal slip ratio |
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