Impedance Based Design Method for Interoperable Wireless Power Transfer Systems

Denis Kraus, Marius Hassler, Grant Covic, Hans Georg Herzog

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

10 Scopus citations

Abstract

The recently published standard for wireless power transfer for electric vehicles (EV) from SAE provides an impedance based approach to describe and ensure interoperability between the primary and secondary side. This paper extends and utilizes this approach to derive a powerful and flexible design method for interoperable WPT systems. Operational boundaries for the electronics and coils are used to establish an impedance capability range at each interface, which then can be transferred to any other interface and used as a design space, or for assessing a component. This method can be used in various ways, one of which is presented as a process to derive early stage inverter requirements for an interoperable primary system. Furthermore, the method is used to show that the magnetics of the reference primary system in the standard requires active tuning in order to achieve full interoperability at the middle range air-gap class.

Original languageEnglish
Title of host publication2021 IEEE Energy Conversion Congress and Exposition, ECCE 2021 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1580-1587
Number of pages8
ISBN (Electronic)9781728151359
DOIs
StatePublished - 2021
Event13th IEEE Energy Conversion Congress and Exposition, ECCE 2021 - Virtual, Online, Canada
Duration: 10 Oct 202114 Oct 2021

Publication series

Name2021 IEEE Energy Conversion Congress and Exposition, ECCE 2021 - Proceedings

Conference

Conference13th IEEE Energy Conversion Congress and Exposition, ECCE 2021
Country/TerritoryCanada
CityVirtual, Online
Period10/10/2114/10/21

Keywords

  • SAE J2954
  • impedance planes
  • inductive charging
  • interoperability
  • wireless power transfer

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