Analysis and control of series/series-parallel compensated resonant converter for contactless power transfer

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

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Author(s)

  • Jia Hou
  • Qianhong Chen
  • Siu-Chung Wong
  • Chi K. Tse
  • Xinbo Ruan

Detail(s)

Original languageEnglish
Article number6849967
Pages (from-to)124-136
Journal / PublicationIEEE Journal of Emerging and Selected Topics in Power Electronics
Volume3
Issue number1
Online published8 Jul 2014
Publication statusPublished - Mar 2015
Externally publishedYes

Abstract

Series/series (S/S) and series/parallel (S/P) compensations are widely used in contactless power transfer systems. However, the inductive input impedance of the S/S compensated converter operating at an output voltage gain intersection point impairs the system's efficiency, and the output voltage of the S/P compensated converter operating at resonant frequency is quite sensitive to variation of transformer's parameters caused by air gap change or misalignment. This paper proposes a novel series/series-parallel (S/SP) compensation topology to achieve both high efficiency and good output controllability. The frequency-domain and time-domain analyses of the proposed resonant converter are performed in this paper. Similar to the conventional resonant converters, both phase-locked-loop (PLL) control and fixed-frequency control can be employed. A 60-W prototype with PLL control and a 1.5-kW prototype with fixed-frequency control are built to verify the theoretical analysis. To perform the input-to-output voltage gain comparison, an S/P compensated converter is also fabricated. Experimental results verify the effectiveness of the proposed compensation method. The efficiency of the fabricated S/SP prototype reaches 95.2% at an output power of 1.5 kW with a 10-cm air gap between windings.

Research Area(s)

  • Compensation topology, contactless power transmission (CPT), control strategy, input-to-output voltage gain, resonant power converter

Citation Format(s)

Analysis and control of series/series-parallel compensated resonant converter for contactless power transfer. / Hou, Jia; Chen, Qianhong; Wong, Siu-Chung; Tse, Chi K.; Ruan, Xinbo.

In: IEEE Journal of Emerging and Selected Topics in Power Electronics, Vol. 3, No. 1, 6849967, 03.2015, p. 124-136.

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