同步电机由于自身的优点 ,特别是能向电网发送无功功率 ,支持电网电压 ,已在各行各业得到广泛应用。在中小氮肥厂与其配套励磁整流装置ＫＬＦ - 1 0型应用的更是广泛。由于电机起动频繁 ,装置故障率高 ,尤其是可控硅损坏修复时间长 ,一直是该装置最大缺陷 ,甚至引起同步电机的? Synchronous motors because of its own advantages, in particular, can send reactive power to the grid to support the grid voltage, has been widely used in all walks of life. In medium and small nitrogen fertilizer plant and its supporting excitation rectifier KLF - 1 0 type application is more extensive. As the motor starts frequently, the device failure rate is high, especially the SCR damage repair a long time, has been the biggest flaw in the device, and even caused the synchronous motor?