A reverse-coupled bipolar coil structure for an integrated LCC-compensated inductive power transfer system

Fei Lu, Hua Zhang, Chong Zhu, Ying Mei, Jie Zhang, Chris Mi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

This paper proposes a reverse-coupled bipolar coil structure to realize an integrated LCC-compensated inductive power transfer (IPT) system. Two unipolar coils are connected reversely, resulting in a bipolar structure, which is used as the compensation inductor in an LCC-compensated IPT system. This bipolar coil is integrated into the main coil to save space, and its dimensions are designed to eliminate its magnetic coupling with the same-side main coil and simplify the circuit analysis. The working principle of the integrated IPT system is presented, which shows that the proposed bipolar coil can help improve the system performance with position and angular misalignment in the horizontal plane. A prototype is designed and implemented to validate the proposed bipolar coil structure. The primary coil dimension is 450mm×450mm, and the secondary coil size is 300mm ×300mm. Experiments show that it can achieve 2.15kW power transfer with 89.9% dc-dc efficiency across an airgap of 200mm. When there is 150mm misalignment, the system power and efficiency are not significantly affected, and it can still maintain 80.5% of the well-aligned power with 89.0% efficiency.

Original languageEnglish (US)
Title of host publicationAPEC 2018 - 33rd Annual IEEE Applied Power Electronics Conference and Exposition
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1363-1368
Number of pages6
ISBN (Electronic)9781538611807
DOIs
StatePublished - Apr 18 2018
Externally publishedYes
Event33rd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2018 - San Antonio, United States
Duration: Mar 4 2018Mar 8 2018

Publication series

NameConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
Volume2018-March

Conference

Conference33rd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2018
Country/TerritoryUnited States
CitySan Antonio
Period3/4/183/8/18

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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