Sensitivity Analysis of Inductive Power Transfer Systems With Voltage-Fed Compensation Topologies

J. Lu, G. Zhu, Huai Wang, F. Lu, J. Jiang, C. C. Mi

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Abstract

The output characteristics and the transfer efficiencies of inductive power transfer (IPT) systems are affected by (but not limited to) the variation of parameters such as, variable load, misalignment between the primary and secondary coils, and resonance frequency detuning. This paper first analyzes the resonant conditions of all voltage-fed compensation topologies in IPT systems to achieve the load-independent voltage transfer characteristic at load-independent zero phase angle frequency. With these conditions, the parameters sensitivity to the key performance factors of the S-SP, LCC-S, LCC-P, and double-sided LCC compensated IPT systems are systematically investigated when considering the losses in coils and compensation networks. Comparisons of the quantitative sensitivity analysis and experimental results for all IPT systems are made in terms of the voltage transfer ratio and efficiency. These analyses can provide guidance for the selection of superior compensation networks to minimize the additional converter effort and simplify the control algorithm of closed-loop IPT systems.

Original languageEnglish
Article number8663433
JournalIEEE Transactions on Vehicular Technology
Volume68
Issue number5
Pages (from-to)4502-4513
Number of pages12
ISSN0018-9545
DOIs
Publication statusPublished - May 2019

Keywords

  • Compensation topology
  • constant voltage
  • Inductive Power Transfer (IPT)
  • parametric uncertainty
  • sensitivity
  • Zero Phase Angle (ZPA)

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