A Parameter Identification Approach with Primary-Side Measurement for DC-DC Wireless-Power-Transfer Converters with Different Resonant Tank Topologies

Junwei Liu, Guibin Wang, Gang Xu, Jianchun Peng, Hui Jiang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

16 Citations (Scopus)

Abstract

Mutual inductance and load condition of a wireless-power-transfer system are essential parameters to regulate the output voltage and power or track maximum efficiency. This article proposes a parameter identification approach for the DC-DC WPT resonant converter only requiring the primary-side measurement to identify the mutual inductance, output voltage, output power, and efficiency under unknown varying misalignment and load conditions. The approach is widely applicable to series-series, series-parallel, parallel-series, parallel-parallel, and LCC-C topologies and can estimate the value variation of the resonant capacitors, which are the unique advantages compared with other existing methods. Moreover, there is no restriction on the operation frequency selection. The direct-quadrature transformation technique is applied to acquire the fundamental and third-order harmonics information of primary-side voltage and current accurately. Detailed analysis, hardware design, and laboratory prototype are presented with experimental results to validate the correctness and accuracy of the proposed approach.

Original languageEnglish
Article number9310212
Pages (from-to)1219-1235
Number of pages17
JournalIEEE Transactions on Transportation Electrification
Volume7
Issue number3
DOIs
Publication statusPublished - Sept 2021
Externally publishedYes

Keywords

  • Mutual inductance
  • parameter identification
  • primary-side measurement
  • wireless power transfer (WPT)

ASJC Scopus subject areas

  • Automotive Engineering
  • Transportation
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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