Fig. 1. Circuit configuration of prior bidirectional converter and converter with modified converter position. 그림 1. 기존 양방향 컨버터 회로 구조와 커패시터 위치가 변경된 컨버터
Fig. 2. Voltage stress factor and capacitor failure rate, (a) voltage stress factor with capacitor voltage ripple, (b) capacitor failure rate according to temperature. 그림 2. 전압스트레스 인자와 커패시터 고장률, (a) 커패시터 전압 리플에 따른 전압 스트레스 인자값, (b) 온도에 따른 커패시턴스 고장률
Fig. 3. Failure rate comparison of both converters according to capacitance value and operating temperature. 그림 3. 커패시턴스 값과 동작온도에 따른 두 컨버터의 고장률 비교
Fig. 4. MTBF comparison of both converters according to capacitance and operating temperature, (a) MTBF, (b) difference between maximum and minimum of MTBF. 그림 4. 커패시턴스 값과 동작온도에 따른 두 컨버터의 평균고장시간 비교, (a) 평균고장시간, (b) 평균고장 시간 최댓값과 최솟값의 차
Table 1. Specification of bidirectional converter. 표 1. 양방향 컨버터 설계사양
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