Class-E Rectifiers with Optimized Near-Resistive Input Impedance for 6.78-MHz WPT

Xiaosheng Huang, Yi Dou, Yuan Tian, Ziwei Ouyang, Michael A. E. Andersen, Shuyi Lin

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

    Abstract

    Class-E rectifier with finite inductance is widely used for the rectification of 6.78-MHz WPT systems. However, the phase-shift of input impedance is relatively large over its load range and may degrade the transfer efficiency. This paper proposes a new design methodology of class-E rectifiers to achieve a near-resistive input impedance over a wide load range. A time-domain model is built for circuit analysis and parameter optimization. In the calculation examples, the maximum phase of input impedance can be reduced by at least 56.5 % compared to the conventional ones. The proposed design method and the circuit model are verified by simulation and measurement.
    Original languageEnglish
    Title of host publicationProceedings of 9th IEEE International Power Electronics and Motion Control Conference
    PublisherIEEE
    Publication date2020
    Pages1952-1956
    ISBN (Print)9781728153018
    DOIs
    Publication statusPublished - 2020
    Event9th IEEE International Power Electronics and Motion Control Conference - Nanjing, China
    Duration: 29 Nov 20202 Dec 2020

    Conference

    Conference9th IEEE International Power Electronics and Motion Control Conference
    Country/TerritoryChina
    CityNanjing
    Period29/11/202002/12/2020

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