A design methodology for multi-kW, large airgap, MHz frequency, wireless power transfer systems

Seung Hwan Lee, Robert D. Lorenz

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

38 Scopus citations

Abstract

In a loosely coupled kW level wireless power transfer system, it is difficult to consider multiple design considerations simultaneously because of the system complexity. Circuit design methodology is critical to achieve efficient, low VA rating, and stable system. In this paper, a design methodology for a loosely coupled series-parallel resonant system is proposed. Proposed design methodology is evaluated by a 3kW, 30cm distance power transfer design example. Using the methodology, efficiency, VA rating, stability, and safety issues are considered simultaneously. The example model is implemented by means of FEA. A surface spiral winding transmitter coil is used in the FEA model. Quality factor (Q) dependence of surface spiral winding on mechanical design parameters is investigated to maximize the Q. Based on the investigation, a high Q coil is designed for the system and the coil is used as a transmitter to evaluate the proposed methodology.

Original languageEnglish
Title of host publicationIEEE Energy Conversion Congress and Exposition
Subtitle of host publicationEnergy Conversion Innovation for a Clean Energy Future, ECCE 2011, Proceedings
Pages3503-3510
Number of pages8
DOIs
StatePublished - 2011
Event3rd Annual IEEE Energy Conversion Congress and Exposition, ECCE 2011 - Phoenix, AZ, United States
Duration: 17 Sep 201122 Sep 2011

Publication series

NameIEEE Energy Conversion Congress and Exposition: Energy Conversion Innovation for a Clean Energy Future, ECCE 2011, Proceedings

Conference

Conference3rd Annual IEEE Energy Conversion Congress and Exposition, ECCE 2011
Country/TerritoryUnited States
CityPhoenix, AZ
Period17/09/1122/09/11

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