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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2016-08-12
A Comparative Study of Flux Cancellation Among Multiple Interconnected Modular Pads in Lumped IPT System
By
Chun Qiu,

    Dr. Chun Qiu

    Department of Electrical and Electronic Engineering

    University of Hong Kong

    China

    Homepage

Kwok-Tong Chau,

    Prof. Kwok-Tong Chau

    EEE Department

    University of Hong Kong

    China

    Homepage

Zhen Zhang,

    Dr. Zhen Zhang

    Department of Electrical and Electronic Engineering

    University of Hong Kong

    China

    Homepage

Tze Wood Ching

    Dr. Tze Wood Ching

    Department of Electromechanical Engineering

    University of Macau

    China

    Homepage

Progress In Electromagnetics Research M, Vol. 49, 131-140, 2016
doi:10.2528/PIERM16060703 | Google Scholar

Abstract
A lumped inductive power transfer system (IPT) with multiple modular pads differs from a stand-alone system. The magnetic coupling between adjacent modules is affected by the flux cancelation which further affects the power transmission. Thus, it is important to investigate the relationship between flux cancelation and system configuration. In this paper, the basic connection and operating mechanism for a modular IPT system are first discussed. Six cases are designed for two scenarios, including single and multiple secondary modules. Performances are compared in various primary excitation modes and secondary connection modes. Results show that the direction of canceled flux is determined by these modes. Matched modes will bring either a higher or a more stable coupling. And unmatched modes between primary and secondary sides tend to have the lowest coupling performance due to severe flux cancelation. Results provide a guidance for system design aiming at different power transfer characteristics.
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Citation
Chun Qiu, Kwok-Tong Chau, Zhen Zhang, and Tze Wood Ching, "A Comparative Study of Flux Cancellation Among Multiple Interconnected Modular Pads in Lumped IPT System," Progress In Electromagnetics Research M, Vol. 49, 131-140, 2016.
doi:10.2528/PIERM16060703
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