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随着大功率及可控的电子器件技术的发展,铁道牵引将采用无换向器及不须多维护的异步牵引电动机。异步牵引电动机突出优点是维修费少,电机重量轻,在传递较大牵引力时有好的特性,较好的通用性等。上述优点以及在ED2500型电传动内燃机车上所取得的成功运行经验,使西德联邦铁路把设计新的标准型120系列电力机车的电气部分的任务委
With the development of high-power and controllable electronic device technology, the railway traction will adopt the asynchronous traction motor without commutator and without more maintenance. Prominent advantages of asynchronous traction motor maintenance costs less, the motor light weight, the transmission of greater traction has good features, good versatility. The above advantages and the successful operational experience gained on the ED2500 electric drive diesel locomotive have enabled the West German Federal Railroad to develop the task force for the electrical part of the design of a new standard 120 series electric locomotive