Meanwhile, PWM inverters using high switching frequency device that shortens the rise time of PWM output pulse have been widely applied in high-speed AC driving locomotive.

同时，高速交流传动机车广泛采用高开关频率器件的脉宽调制（PWM）逆变器，使得逆变器输出脉冲具有陡上升沿。

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Operating principle of power factor compensating device for 8k electric locomotive is briefly described as well as its parameter selection, switching on and off control.

本文概述了8 K机车功率因数补偿装置的工作原理、参数选择及投切控制。

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This paper introduces the operating principle and simulation test results of automatic control system of SS1 electric locomotive used for the sectioning of phase switching.

本文介绍了SS1型电力机车过相分段自动控制装置的工作原理和模拟试验结果。

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