整流电路EMC试验可靠性研究与应用——以某空调机组驱动板EMC试验失效为例

Research and Application of Reliability Test of Rectifier Circuit EMC——Taking the Failure of EMC Test of an Air Conditioning Unit Drive Board as an Example

针对某空调机组在进行整机EMC浪涌试验时,内机驱动板所用A厂家整流桥短路失效的问题,本文从整流桥失效机理、器件参数对比、电路设计差异、模拟验证复现等方面进行分析,找出导致驱动板EMC浪涌冲击试验失效的原因。

Aiming at the short-circuit failure of rectifier bridge of manufacturer a used in internal drive board of an airconditioning unit during EMC surge test,this paper analysed the failure mechanism of rectifier bridge,the comparison of device parameters,the difference of circuit design and the recurrence of simulation verification,and found out the reasons for the failure of EMC surge test of driving board.