Propulsion system
Propulsion system
复制标题
推进系统
DOI：
--
复制
发表时间：
1983
期刊：
影响因子：
--
通讯作者：
J. Diamond
中科院分区：
文献类型：
--
作者：
J. Diamond
仅提供摘要形式。低压直流（-600 V）公交汽车的推进系统由于在典型的多步电机控制器中连续断开大直流电流而变得复杂。半导体控制器有两个困难：它们容易受到高压脉冲的影响，而且它们需要电子技术人员的服务，而这些技术人员可能很难吸引到铁路行业。作者建议使用两个旧的和成熟的设备来控制电力流的牵引电机的安排。一种是古老的同步转换器运行反向，也就是说，转换直流到多相交流，例如，12相交流。第二个装置是多相可变自耦变压器，从转换器接收其功率，并通过二极管驱动他激直流牵引电机。滑行是通过简单地回退可变自耦变压器来实现的。
Summary form only given. The propulsion system of low-voltage dc (-600 V) transit cars is complicated by the continual breaking of heavy dc currents in the typical multistep motor controller. Semiconductor controllers have two difficulties: they are vulnerable to high voltage impulses, and they require the ministrations of electronic technicians who may be hard to attract to the railroad industry. The author suggests an arrangement using two old and well-proven devices to control the flow of power to the traction motors. One is the venerable synchronous converter running inverted, that is, converting dc to polyphase ac, for example, 12 phase ac. The second device is the polyphase variable autotransformer, receiving its power from the converter and driving separately excited dc traction motors through diodes. Coasting is effected by simply backing off the variable autotransformer.