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전기자동차용 DC 충전기의 절연감지 기능에 대한 연구 및 적용
김경진(Kyoungjin Kim),정호균(Hokyun Jung),박덕우(Dukwoo Park),고홍기(Honggi Ko) 한국자동차공학회 2021 한국자동차공학회 부문종합 학술대회 Vol.2021 No.6
In this paper, we propose EV DC charger isolation monitoring method and application. Firstly, we analyze current commercial charger isolation function and problem then apply applications with proposed method and functions. The proposed algorithms work pro-actively detects insulation in accordance with the charging voltage system required by electric vehicles and monitors the insulation value during all of charging processes. This function is archived control logic and 3rd supervisor module (IMD). In addition, this isolation detection result can be transmitted in real time to electric vehicles and charger control centers through by DIN/ISO PLC communication. Finally, we implemented to COMBO 1 fast charger and evaluated with mass production EV. The result is showed active control of charger and detect problem with real time. Also, we will suggest this requirement to the industrial solution and safety certification.