Software-Reconfigurable Multistage Constant Current Wireless Battery Charging Based on Multiharmonic Power Transmission

Junwei Liu, C. S. Wong, Chuan Sun, Fei Xu, Xingyue Jiang, K. H. Loo

Research output: Journal article publicationJournal articleAcademic researchpeer-review

3 Citations (Scopus)


Wireless power transfer technology (WPT) has been widely applied in electric vehicle (EV) battery chargers because of its convenience, reliability, and safety. A typical battery charging profile consists of a constant current (CC) charging process followed by a constant voltage (CV) charging process. Recently, a multi-stage constant current (MSCC) charging profile is proposed to increase the charging speed, flexibility, and other performances. MSCC charging profile consists of multiple CC charging processes, which are applied to the battery in turn. This paper proposes a low-cost software-reconfigurable MSCC charging technique for a typical single-stage DC-DC series-series (SS) compensated WPT converter using multiple high-order harmonics power transmission approach. Such technique does not require any additional component and it can achieve inherent load-independent CC output and zero phase angle (ZPA) input characteristics. Moreover, it provides a pre-charge process for deeply discharged batteries to increase their lifetime. A scaled-down design example and the corresponding laboratory prototype are implemented to verify the proposed method.

Original languageEnglish
Article number10002332
Pages (from-to)1-12
Number of pages12
JournalIEEE Transactions on Power Electronics
Publication statusPublished - Dec 2022


  • Batteries
  • Harmonic analysis
  • high-order harmonics
  • Inverters
  • Multi-stage constant current (MSCC) charging
  • Power harmonic filters
  • Topology
  • Voltage
  • Wireless communication
  • wireless power transfer

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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