CAJ | 학술논문

局部放电是引起PWM变频电机绝缘在高频连续脉冲条件下发生老化的重要因素之一，严重时将导致电机绝缘的击穿。由于高频连续脉冲的上升时间为ns级且幅值为kV级，故既加剧了电机绝缘的老化程度，也对局部放电检测系统提出了高要求。为了有效提取局部放电信号，提出了一种基于声电传感器构成的超声检测系统，用于高频局部放电的研究。
국부방전시인기PWM변빈전궤절연재고빈련속맥충조건하발생노화적중요인소지일，엄중시장도치전궤절연적격천。유우고빈련속맥충적상승시간위ns급차폭치위kV급，고기가극료전궤절연적노화정도，야대국부방전검측계통제출료고요구。위료유효제취국부방전신호，제출료일충기우성전전감기구성적초성검측계통，용우고빈국부방전적연구。
Partial discharge is PWM frequency conversion motor insulation aging in high frequency under the condition of continuous pulse one of the important factors, serious when will lead to motor insulation breakdown. Due to the high frequency continuous pulse rise time levels for ns and amplitude for kV, exacerbating the motor insulation aging degree, also for partial discharge detection system put forward higher requirements. In order to effectively extract the partial discharge signals, a kind of based on acoustoelectric sensor consisting of ultrasonic detection system was put forward used in the study of high frequency of partial discharge.