A Power-Enhancing Complementary-Coupling Integration Strategy for Misalignment-Tolerant WPT Systems

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

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Author(s)

  • Zhaoyang Yuan
  • Qingxin Yang
  • Xian Zhang
  • Ran Wang
  • Xianjie Ma
  • And 4 others
  • Changsong Cai
  • Pengcheng Zhang
  • Hongjian Lin
  • Maryam Saeedifard

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)14689-14701
Journal / PublicationIEEE Transactions on Power Electronics
Volume38
Issue number11
Online published7 Aug 2023
Publication statusPublished - Nov 2023

Abstract

This article presents a complementary coupling integration method for an inductor–capacitor–capacitor-series-compensated wireless power transfer (WPT) system to improve the misalignment tolerance and power transfer capability. To this end, a compensation (Cx) coil formed by a long rectangular coil wound into a C-shaped structure is proposed. As a result, two multiples of the mutual inductance (MI) between the Cx and receiver (Rx) coils are added to the MI between the transmitter and Rx coils, providing the MI complement effect to increase the equivalent MI under both the perfectly aligned and misaligned conditions. A mathematical model based on the Delta–Wye network transform is developed to obtain the zero-phase-angle (ZPA) input and load-independent constant current (CC) output conditions. A 1-kW scaled-down WPT prototype based on the proposed method is built, and its performance is experimentally validated. The proposed system achieves 85.22% efficiency at 150-mm air gap and tolerates ±200-mm x-, y-, and diagonal misalignments, ±50-mm z-misalignment, and 20 angular misalignment with ZPA input and load-independent CC output as the load varies from 5 to 20 Ω. In addition, the system performance is barely affected by the planar rotation misalignment.

Research Area(s)

  • Coils, complementary-coupling integration, constant current (CC) output, Equivalent circuits, Inductance, misalignment tolerance, power enhancement, Receivers, Switches, Topology, Voltage, Wireless power transfer (WPT)

Citation Format(s)

A Power-Enhancing Complementary-Coupling Integration Strategy for Misalignment-Tolerant WPT Systems. / Yuan, Zhaoyang; Yang, Qingxin; Zhang, Xian et al.
In: IEEE Transactions on Power Electronics, Vol. 38, No. 11, 11.2023, p. 14689-14701.

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