Abstract
본 논문은 전기자동차 (Electric Vehicles, EVs) 및 플러그인 하이브리드 자동차 (Plug-In Hybrid Electric Vehicles, PHEVs)용 리튬 이온 (Li-Ion) 배터리 충전을 위한 3.3 kW급 차량 탑재형 (On-Board) 충전기 하드웨어의 설계 및 제작에 대하여 기술한다. 차량 실장 특성을 고려하여 부하직렬공진형 dc-dc 컨버터를 적용하고, 80-130kHz의 고주파 스위칭 및 ZVS (Zero-Voltage Switching) 기법을 통해 수동소자의 크기를 최적화하여 5.84L, 5.8kg의 저부피, 경량을 달성한다. 전자부하를 대상으로 정전류 (Constant Current, CC) 및 정전압 (Constant Voltage, CV) 제어를 수행하여 92.5%의 고효율 획득 및 성능을 검증한다. This paper presents a design and implementation of 3.3 kW on-board battery charger for electric vehicles or plug-in hybrid electric vehicles. Considering characteristics of the electric vehicles, a series-loaded resonant dc-dc converter and frequency control scheme are adopted to improve efficiency and reliability, and to reduce volume and cost. The developed on-board battery charger is designed and implemented by using high frequency of 80-130 kHz and zero voltage switching method. The experimental result indicates 92.5% of the maximum efficiency, 5.84 liters in volume, and 5.8kg in weight through optimal hardware design.
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