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자동차용 엔진 쿨링 팬 모터 PWM 제어기의 수명 해석을 위한 가속 시험법 개발
임정혁(Jeong-hyeok Lim),신민경(Min-gyung Shin),이상훈(Sang-hoon Lee),박상욱(Sang-wook Park),이영수(Young-soo Lee),손정현(Jeong-hyun Son),한덕호(Duck-ho Han) 한국자동차공학회 2017 한국자동차공학회 학술대회 및 전시회 Vol.2017 No.11
In order to assess the reliability of the cooling fan motor PWM controller for automobiles, accelerated life test model and procedure are developed. By using this method, failure mechanism and life distribution are analyzed. The main results are as follows; 1) the main failure mechanism is degradation failure that is, capacity degradation of a capacitor by high temperature. 2) the life distribution of the PWM controller is fitted well to Weibull life distribution and the accelerated life model of that is fitted well to Arrhenius model. 3) at the result of the life distribution, accelerated life test method is developed, and test time for life assessment will be shortened by 5,200hours by this test method.