Real-time Front-end Monitoring of Load, Mutual Inductance, and SOC in SS-Compensated Wireless Charging Systems

Junming Zeng, Jiayang Wu, Kerui Li, Yun Yang, Shu Yuen Ron Hui

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

This paper proposes a fast, accurate, and low-cost front-end real-time estimation method based on a two-coil series-series compensated wireless power transfer (WPT) system that allows the resonant frequencies of the transmitter and receiver resonators to be different. The proposed method offers simultaneous multiple functions of parameter estimation, primary-side control, and state of charge (SOC) monitoring. Its implementation is simple because only current detection on the primary side is needed. With the real-time estimation of the mutual inductance and load resistance, the output voltage and output current can be determined and regulated by the phase shift control with the primary side control. This implies that the constant-current (CC) and constant-voltage (CV) charging mode of the Li-ion battery can be selected with primary-side control, and the SOC can be calculated in real time. The simulation and experimental results show that the mutual inductance and the load can be estimated accurately in real time. With accurate estimation results, CC-CV mode charging can be realized, and the real-time SOC can be observed on the primary side accurately.

Original languageEnglish
Title of host publication2023 IEEE Wireless Power Technology Conference and Expo, WPTCE 2023 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9798350337372
DOIs
Publication statusPublished - Aug 2023
Externally publishedYes
Event2023 IEEE Wireless Power Technology Conference and Expo, WPTCE 2023 - San Diego, United States
Duration: 4 Jun 20238 Jun 2023

Publication series

Name2023 IEEE Wireless Power Technology Conference and Expo, WPTCE 2023 - Proceedings

Conference

Conference2023 IEEE Wireless Power Technology Conference and Expo, WPTCE 2023
Country/TerritoryUnited States
CitySan Diego
Period4/06/238/06/23

Keywords

  • Front-end monitoring
  • real-time estimation
  • SOC estimation
  • wireless power transfer

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Control and Optimization
  • Instrumentation

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