A Single-Stage Inductive-Power-Transfer Converter for Constant-Power and Maximum-Efficiency Battery Charging

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Zhicong Huang
  • Chi-Seng Lam
  • Pui-In Mak
  • Rui Paulo Da Silva Martins
  • Siu-Chung Wong

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number8974434
Pages (from-to)8973-8984
Journal / PublicationIEEE Transactions on Power Electronics
Volume35
Issue number9
Online published29 Jan 2020
Publication statusPublished - Sept 2020

Abstract

This article proposes a single-stage inductive-power-transfer (IPT) converter operating as a wireless constant-power (CP) and maximum-efficiency battery charger. By maintaining a constant output power rather than providing a constant output current throughout the dominant stage of battery charging, the IPT converter can make the utmost of its power capability, thus having a faster charging rate. The proposed single-stage IPT converter adopts series-series compensation and includes a switch-controlled capacitor (SCC) and a semiactive rectifier (SAR) in the secondary side. Manipulating the SCC and the SAR to emulate the optimum impedance of the resonator and the load, we propose a novel operation approach combining the merits of load-independent transfer characteristic and load impedance matching, to achieve a simple solution to CP charging and maximum efficiency throughout the charging process. Since the control scheme is based on fixed operating frequency and secondary-side real-time regulation, wireless feedback communication is not required. Moreover, soft switching and low voltage stress can be easily achieved in this IPT converter.

Research Area(s)

  • Battery charging, constant power, inductive power transfer (IPT), maximum efficiency, soft switching

Citation Format(s)

A Single-Stage Inductive-Power-Transfer Converter for Constant-Power and Maximum-Efficiency Battery Charging. / Huang, Zhicong; Lam, Chi-Seng; Mak, Pui-In et al.
In: IEEE Transactions on Power Electronics, Vol. 35, No. 9, 8974434, 09.2020, p. 8973-8984.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review