한국산업융합학회 논문집 (Journal of the Korean Society of Industry Convergence)

한국산업융합학회 (The Korean Society of Industry Convergence)
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Wireless Power Transfer for Electric Vehicles Charging Based on Hybrid Topology Switching With a Single Inverter

  • Chen, Yafei (Dept. of Electrical Engineering, Chonnam National University) ;
  • Zhang, Hailong (Dept. of Electrical Engineering, Chonnam National University) ;
  • Kim, Dong-Hee (Dept. of Electrical Engineering, Chonnam National University) ;
  • Park, Sung-Jun (Dept. of Electrical Engineering, Chonnam National University) ;
  • Park, Seong-Mi (Dept. of Lift Engineering, Korea Lift College)
  • 투고 : 2020.02.25
  • 심사 : 2020.04.03
  • 발행 : 2020.04.30
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초록

In wireless power transfer (WPT) system, the conventional compensation topologies only can provide a constant current (CC) or constant voltage (CV) output under their resonant conditions. It is difficult to meet the CC and CV hybrid charging requirements without any other schemes. In this study, a switching hybrid topology (SHT) is proposed for CC and CV electric vehicle (EV) battery charging. By utilizing an additional capacitor and two AC switches (ACSs), a double-side LCC (DS-LCC) and an inductor and double capacitors-series (LCC-S) topologies are combined. According to the specified CC and CV charging profile, the CC and CV charging modes can be flexibly converted by the two additional ACSs. In addition, zero phase angle (ZPA) also can be achieved in both charging modes. In this method, because the operating frequency is fixed, without using PWM control, and only a small number of devices are added, it has the benefits of low-cost, easy-controllability and high efficiency. A 3.3-kW experimental prototype is configured to verify the proposed switching hybrid charger. The maximum DC efficiencies (at 3.3-kW) of the proposed SHT is 92.58%.

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참고문헌

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