전력전자학회:학술대회논문집 (Proceedings of the KIPE Conference)
- 전력전자학회 2015년도 추계학술대회 논문집
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- Pages.27-28
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- 2015
전기자동차용 고효율 무선 온보드 충전기의 설계
Design of the High Efficiency Wireless On-Board Charger for Electric Vehicles
- 발행 : 2015.11.27
초록
In this paper a high efficiency wireless on-board charger for Electric Vehicle (EV) is proposed and the theoretical analysis based on the two-port network model to come up with suitable design for the battery charge application is presented. The proposed Wireless Power Transfer (WPT) method has adopted four-coil system with air core and its superior performance is proved by comparing it to the conventional two-coil system by the mathematical analysis. In addition, since the proposed WPT converter is able to operate at an almost constant frequency regardless of the load, CC/CV charge of the battery can be simply implemented. A 6.6kW prototype is implemented with 20cm air gap to prove the validity of the proposed method. The experimental results show that the dc to dc conversion efficiency of the proposed system achieves 97.08% at 3.7 kW.