Analysis and optimisation of coupled winding in magnetic resonant wireless power transfer systems with orthogonal experiment results

Xiao Yudi, Mao Xingkui, Lin Mao, Zhe Zhang, Michael A. E. Andersen

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    Abstract

    The coupled magnetic resonant unit (CMRU) has great effect on the transmitting power capability and efficiency of magnetic resonant wireless power transfer system. The key objective i.e. the efficiency coefficient kQ is introduced in the design of CMRU or the coupled windings based on the mutual inductance model. Then the design method with orthogonal experiments and finite element method simulation is proposed to maximize the kQ due to low precise analytical model of AC resistance and inductance for PCB windings at high- frequency. The method can reduce the design iterations and thereby can get more optimal design results. The experiments verified the design objective of kQ as well as the design method effectively. In the optimal PCB windings prototype at operating frequency of 4 MHz, the kQ and the maximum efficiency are increased by about 12% and 4% respectively.
    Original languageEnglish
    JournalElektronika ir Elektrotechnika
    Number of pages6
    ISSN1392-1215
    Publication statusPublished - 2017
    Event21st International Conference ELECTRONICS 2017 - Palanga, Lithuania
    Duration: 19 Jun 201721 Jun 2017

    Conference

    Conference21st International Conference ELECTRONICS 2017
    Country/TerritoryLithuania
    CityPalanga
    Period19/06/201721/06/2017

    Keywords

    • Wireless power transfer
    • Magnetic resonant
    • Orthogonal experiments
    • Magnetic coupling structure optimization

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