DF_(4D)型机车主整流柜二极管烧损的原因分析

Reason analysis of diode burning loss of the main rectifier cabinets for DF_(4D) locomotives

针对DF4D型机车主整流柜二极管多次烧损及由其引发的其它电器元件烧损的问题,从励磁、主整流电路的原理,主整流柜存在的缺陷及同步牵引发电机发生短路后磁势的变化对转子的影响等方面进行分析,提出了解决措施。

The reasons for the diode burning loss of the main rectifier cabinets are analysed from such aspects as the principle of the main rectifier circuit,the designing fault of the main rectifier cabinet and the influence of the changing magnetic potential for the rotor by the shorting trouble of the synchronous main alternator.The countermeasures are promoted in this article.