A Harmonic Resonance Suppression Strategy for a High-Speed Railway Traction Power Supply System with a SHE-PWM Four-Quadrant Converter Based on Active-Set Secondary Optimization

Runze Zhang, Fei Lin, Zhongping Yang, Hu Cao and Yuping Liu
Additional contact information
Runze Zhang: School of Electrical Engineering, Beijing Jiaotong University, Beijing 100089, China
Fei Lin: School of Electrical Engineering, Beijing Jiaotong University, Beijing 100089, China
Zhongping Yang: School of Electrical Engineering, Beijing Jiaotong University, Beijing 100089, China
Hu Cao: CCRC Qingdao Sifang Rolling Stock Research Institute Co. Ltd., Qingdao 266000, China
Yuping Liu: CCRC Qingdao Sifang Rolling Stock Research Institute Co. Ltd., Qingdao 266000, China

Energies, 2017, vol. 10, issue 10, 1-23

Abstract: Pulse width modulation (PWM) technology is widely used in traction converters for high-speed railways. The harmonic distribution caused by PWM is quite extensive, and increases the possibility of grid–train coupling resonance in the traction power supply system (TPSS). This paper first analyzes the mechanism of resonance, when the characteristic harmonic frequency of a four-quadrant converter (4QC) current that injects into the traction grid matches the resonant frequency of the traction grid, which may result in resonance in the system. To suppress resonance, this paper adopts specific harmonic elimination–pulse width modulation (SHE-PWM) technology combined with a transient direct current control strategy to eliminate the harmonics in the resonant frequency, which may suppress the grid–train coupling resonance. Due to the fact that the SHE-PWM process with multiple switching angles contains complex transcendental equations, the initial value is difficult to provide, and is difficult to solve using ordinary iterative algorithms. In this paper, an active-set secondary optimization method is used to solve the equation. The algorithm has the benefits of low dependence on initial values, fast convergence and high solution accuracy. Finally, the feasibility of the resonant suppression algorithm is verified by means of Matlab simulation.

Keywords: high-speed railway; pulse width modulation (PWM); harmonic resonance suppression; specific harmonic elimination–pulse width modulation (SHE-PWM); active set (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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