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1.介绍早在上世纪末,铁路工程师们就试图利用三相异步电动机非常良好的运动性连同它的在牵引技术领域中简单而有效的设计的优越性,但复杂的接触网的架设和不良的牵引特性最终阻碍了该种驱动系统被选用。当时,对于重载、高速列车的运行来说,仍采用固定频率。只有研制和发展了采用短开断时间晶闸管的新型半导体技术,才为三相异步电力机车经济有效地应用于各种高速、重载列车,作为大功率驱动装置创造了基本条件。异步电动机在铁路上的特殊应用的最基本要求是具
1. INTRODUCTION As early as the end of the last century, railway engineers attempted to take advantage of the very good mobility of three-phase asynchronous motors, along with their simplicity and efficiency in traction technology, but the complex catenary construction and poor Traction characteristics eventually hinder the drive system is selected. At that time, for heavy-duty, high-speed train operation, still use a fixed frequency. Only the development and development of a new semi-conductor technology using a thyristor with a short turn-off time has cost-effectively applied three-phase asynchronous locomotives to various high-speed and heavy-load trains and has created the basic conditions for a high-power drive. Asynchronous motors in the railway on the special requirements of the most basic requirements