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针对交流异步电机各种调速方法的优缺点，分析了国产大功率晶闸管串级调速装置的特点并提出了该装置应用维护的一些经验。
Aiming at the advantages and disadvantages of various speed regulation methods of AC asynchronous motor, the characteristics of domestic high power thyristor cascade speed regulating device are analyzed and some experiences of application and maintenance of the device are proposed.