Accurate Modeling of CCS Combo Type 1 Cable and Its Communication Performance Analysis for High-Speed EV-EVSE Charging System

Sanghwa Park, Euibum Lee, Yeong-Hoon Noh, Dong-Hoon Choi and Jong-gwan Yook ()
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Sanghwa Park: School of Electric and Electronic Enginnering, Yonsei University, Seoul 03722, Republic of Korea
Euibum Lee: School of Electric and Electronic Enginnering, Yonsei University, Seoul 03722, Republic of Korea
Yeong-Hoon Noh: School of Electric and Electronic Enginnering, Yonsei University, Seoul 03722, Republic of Korea
Dong-Hoon Choi: School of Electric and Electronic Enginnering, Yonsei University, Seoul 03722, Republic of Korea
Jong-gwan Yook: School of Electric and Electronic Enginnering, Yonsei University, Seoul 03722, Republic of Korea

Energies, 2023, vol. 16, issue 16, 1-16

Abstract: This paper addresses the issue of electromagnetic interference (EMI) in electric vehicle supply equipment (EVSE) charging cables, which can disrupt the communication signal for the real-time monitoring of the charging status, leading to the termination of charging. We propose a dedicated measurement jig for the Combined Charging System Combo Type 1 (CCS-CT1) cable structure and models its electrical characteristics of the jig using the impedance peeling technique for de-embedding. The obtained pure S-parameters of CCS-CT1 are then used to conduct a simulation of the signal integrity problem caused by Gaussian noise, which is the worst-case scenario that can occur in a typical charging system. This paper suggests that the root cause of this problem may be related to the high-power AC/DC conversion device included in the EVSE, which uses a switch-mode power conversion (SMPC) method that involves nonlinear operation and can result in increased harmonic noise and a more complex signal protocol for precise control. Finally, this study provides insights into the challenges of implementing high-speed charging systems and offers a solution for obtaining the accurate electromagnetic characteristics of charging cables.

Keywords: multiconductor transmission line; combined charging system; time domain reflectometry (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: 2023
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