Implementing an impedance compression network to correct misalignment in a wireless power transfer system

Jungwon Choi, Juan Rivas

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

3 Scopus citations

Abstract

This paper presents the design and implementation of an impedance compression network (ICN) to correct distance variation or misalignment between coils in wireless power transfer (WPT) systems. Magnetic resonant coupling (MRC) coils provide high efficiency for charging mid-range WPT applications. However, a distance variation or misalignment between coils causes a coil-impedance change and significantly affects performances of WPT systems. In order to mitigate a coil-impedance variation, we propose an ICN simultaneously compressing changes in magnitude and phase of impedance. The ICN consists of a resistance compression network (RCN) and phase compression network (PCN). While the RCN effectively compresses the variation in the magnitude of impedance by using one pair consisting of an inductor and a capacitor, the PCN is designed using a Smith chart to reduce a phase variation.

Original languageEnglish (US)
Title of host publication2017 IEEE 18th Workshop on Control and Modeling for Power Electronics, COMPEL 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509053261
DOIs
StatePublished - Aug 18 2017
Externally publishedYes
Event18th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2017 - Stanford, United States
Duration: Jul 9 2017Jul 12 2017

Publication series

Name2017 IEEE 18th Workshop on Control and Modeling for Power Electronics, COMPEL 2017

Other

Other18th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2017
Country/TerritoryUnited States
CityStanford
Period7/9/177/12/17

Bibliographical note

Funding Information:
The authors thank Mr. Ryouhei Tanaka from Daihen Corporation for providing funding for this work through the Stanford’s System-X Alliance through its Faculty Mentor Advisor (FMA) research program.

Publisher Copyright:
© 2017 IEEE.

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