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Investigation of a SP/S Resonant Compensation Network Based IPT System with Optimized Circular Pads for Electric Vehicles

  • Ma, Chenglian (School of Electrical Engineering, Northeast Dianli University) ;
  • Ge, Shukun (School of Electrical Engineering, Northeast Dianli University) ;
  • Guo, Ying (State Grid Zibo Power Supply Company) ;
  • Sun, Li (School of Electrical Engineering, Northeast Dianli University) ;
  • Liu, Chuang (School of Electrical Engineering, Northeast Dianli University)
  • Received : 2016.03.28
  • Accepted : 2016.08.02
  • Published : 2016.11.20

Abstract

Inductive power transfer (IPT) systems have become increasingly popular in recharging electric vehicle (EV) batteries. This paper presents an investigation of a series parallel/series (SP/S) resonant compensation network based IPT system for EVs with further optimized circular pads (CPs). After the further optimization, the magnetic coupling coefficient and power transfer capacity of the CPs are significantly improved. In this system, based on a series compensation network on the secondary side, the constant output voltage, utilizing a simple yet effective control method (fixed-frequency control), is realized for the receiving terminal at a settled relative position under different load conditions. In addition, with a SP compensation network on the primary side, zero voltage switching (ZVS) of the inverter is universally achieved. Simulations and experiments have been implemented to validate the favorable applicability of the modified optimization of CPs and the proposed SP/S IPT system.

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