目前，在不少行业（尤其在矿山）同步电动机仍多配用ＫＧＬＦ全控励磁装置。这种由分立元件组成的整流装置存在着故障率高的缺点，且故障排除费力费时，既加大了维修费用又影响了生产的正常进行。因此，现在不少厂矿纷纷对这种装置进行技术改造。自１９９７年始，我厂对３台拖? At present, in many industries (especially mines) synchronous motor is still equipped with KGLF full control excitation device. The rectification device composed of discrete components has the disadvantage of high failure rate, and the time-consuming troubleshooting is not only increased the maintenance cost but also affected the normal production. Therefore, many factories and mines have now carried out technological transformation of such devices. Since 1997, our factory has towed 3 trailers.