Investigation and Analysis of Electromagnetic Interference for PWM Encoder of Urban Rail Train

Authors

  • Yang Yang 1) School of Electrical Engineering Southwest Jiaotong University, Chengdu, 610031, China 2) Department of Mechanical and Information Engineering Sichuan College of Architectural Technology, Deyang, 618000, China
  • Feng Zhu School of Electrical Engineering Southwest Jiaotong University, Chengdu, 610031, China
  • Yuxuan Wang School of Electrical Engineering Southwest Jiaotong University, Chengdu, 610031, China
  • Chengpan Yang School of Electrical Engineering Southwest Jiaotong University, Chengdu, 610031, China

DOI:

https://doi.org/10.13052/2023.ACES.J.380701

Keywords:

Coupling path, Electromagnetic Interference (EMI), EMI suppression, Pulse width modulation (PWM) encoder, Urban rail train

Abstract

Electromagnetic compatibility (EMC) is an important factor in ensuring the safe operation of the sensitive electronic equipment on urban rail trains. The pulse width modulation (PWM) encoder of an urban rail train exported from China to Brazil is sometimes affected by electromagnetic interference (EMI), which causes the train to fail to run properly. To solve this problem, the EMC test is performed on the PWM encoder to identify the coupling path and the type of interference source. The EMI coupling model and the vehicle-catenary-rail model are established by using an electromagnetic transients program (EMTP) to analyze the mechanism of interference coupling. It is shown that the unbalanced voltage of the train body caused by the backflow of the grounding current is the root cause of the interference of the PWM encoder. The maximum voltage coupled to the internal port of the PWM encoder is about 1894 V, which is sufficient to burn out the encoder. A measure to suppress the interference by installing thyristor surge suppressors (TSS) P0300SC is proposed, which effectively solves the EMI problem of the PWM encoder.

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Author Biographies

Yang Yang, 1) School of Electrical Engineering Southwest Jiaotong University, Chengdu, 610031, China 2) Department of Mechanical and Information Engineering Sichuan College of Architectural Technology, Deyang, 618000, China

Yang Yang was born in Shanxi, China, in 1989. She received the master’s degree in control theory and control engineering from Northwestern Polytechnical University in 2014. She is currently working toward the Ph.D. degree in electrical engineering at Southwest Jiaotong University, Chengdu, China. At the same time she is also a lecturer at Sichuan College of Architectural Technology.

Her research interests include electromagnetic environment test and evaluation, electromagnetic compatibility analysis, and design in the areas of rail transit.

Feng Zhu, School of Electrical Engineering Southwest Jiaotong University, Chengdu, 610031, China

Feng Zhu was born in Anhui Province, China, in 1963. He received the Ph.D. degree in railway traction electrification and automation from the Southwest Jiaotong University, Sichuan, China, in 1997.

He is currently a full professor with the School of Electrical Engineering, Southwest Jiaotong University. His current research interests include locomotive over-voltage and grounding technology, electromagnetic theory and numerical analysis of electromagnetic field and electromagnetic compatibility analysis and design.

Yuxuan Wang, School of Electrical Engineering Southwest Jiaotong University, Chengdu, 610031, China

Yuxuan Wang was born in Sichaun Province, China, in 1998. He received the B.S. degree in automation from the University of South China, Hengyang, China, in 2020. He is currently working toward the master’s degree in electronic and information engineering at Southwest Jiaotong University, Chengdu, China.

His research interests are in the areas of electrified railway, electromagnetic compatibility, electromagnetic environment test and evaluation.

Chengpan Yang, School of Electrical Engineering Southwest Jiaotong University, Chengdu, 610031, China

Chengpan Yang was born in Sichaun Province, China, in 1994. He received the master’s degree in electrical engineering from Nanjing Normal University, Nanjing, China, in 2020. He is currently working toward the Ph.D. degree in electrical engineering at Southwest Jiaotong University, Chengdu, China.

His research interests are in the areas of electrified railway, electromagnetic compatibility, crosstalk, and multiconductor transmission lines.

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Published

2023-07-31

How to Cite

[1]
Y. . Yang, F. . Zhu, Y. . Wang, and C. . Yang, “Investigation and Analysis of Electromagnetic Interference for PWM Encoder of Urban Rail Train”, ACES Journal, vol. 38, no. 07, pp. 466–474, Jul. 2023.

Issue

2023: Vol 38 Iss 7

Section

General Submission

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