In addition to the asymmetric coil structure in the previous chapter, another idea of increasing tolerance is to use DQ power supply coil sets for wireless stationary electric vehicle (EV) chargers. Two coil sets having a 90 phase difference can increase tolerances for longitudinal, lateral, as well as diagonal displacements. Each power supply coil set consists of two same magnetic poles to generate uniform magnetic flux density over the power supply coil. A prototype inductive power transfer system (IPTS) using the proposed DQ power supply coil sets for the wireless stationary EV chargers was fabricated for the experimental verifications with an operating frequency of 85 kHz to satisfy Standard J2954 of the Society of Automotive Engineers (SAE). From simulation and experiment results, it is found that the lateral, longitudinal, and diagonal displacements of the proposed coil sets increase by about 35% and 19%, respectively, at an airgap of 150 mm, compared with conventional rectangular loop‐type coils.

    This chapter is based on the paper by S,Y. Jeong et al., “DQ‐quadrature coil sets with large tolerance for wireless stationary EV chargers,” in IEEE 2015 WoW, June 2015.


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    Title :

    DQ Coils for Large Tolerance EV Chargers


    Contributors:
    Rim, Chun T. (author) / Mi, Chris (author)


    Publication date :

    2017-07-11


    Size :

    9 pages




    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English




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