Minimizing Reactive Power for LCL-T Converter in Multi-pickup Inductive Power Transfer System

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Abstract

Multiple pickup operation is a common scenario for IPT applications. In this scenario, constant current output is often required at the transmitter to avoid a complicated control method at the pickups. The LCL-T topology has been widely used to produce a constant output current for variable loads. This paper will present the analysis, simulation and test of a LCL-T resonant converter. The work here considers the load as a variable impedance comprising both a variable resistance and a variable inductance. The trade-off of LCL-T topology is discussed in the frequency domain to solve the off-resonant problem in a large load range. A 100W LCL-T resonant inverter operating at 50kHz is developed and the experimental results verify that the proposed method can reduce the reactive power required at partial load and ensure constant current output and ZVS in the whole load range.

Original languageEnglish
Title of host publicationProceedings - 2018 IEEE International Power Electronics and Application Conference and Exposition, PEAC 2018
EditorsF.C. Lee, M.D. Xu, A. Mantooth
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages6
ISBN (Electronic)978-1-5386-6053-9
ISBN (Print)978-1-5386-6054-6
DOIs
Publication statusPublished - 2018
Event2018 IEEE International Power Electronics and Application Conference and Exposition, PEAC 2018 - Shenzhen, China
Duration: 4 Nov 20187 Nov 2018

Conference

Conference2018 IEEE International Power Electronics and Application Conference and Exposition, PEAC 2018
CountryChina
CityShenzhen
Period4/11/187/11/18

Keywords

  • constant current output
  • LCL-T converter
  • multiple pickup IPT
  • reactive power reduction
  • zero voltage switching

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  • Cite this

    Wu, D., Ackermann, B., & Ferreira, J. A. (2018). Minimizing Reactive Power for LCL-T Converter in Multi-pickup Inductive Power Transfer System. In F. C. Lee, M. D. Xu, & A. Mantooth (Eds.), Proceedings - 2018 IEEE International Power Electronics and Application Conference and Exposition, PEAC 2018 [8590546] Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/PEAC.2018.8590546