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.
Type KZ4A AC drive electric locomotive is designed for national high-speed railway in Kazakhstan.
KZ4A型交流传动电力机车用于哈萨克斯坦国家铁路干线高速客运。
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This paper presents the control strategy of type DSA250 pantograph on the electric control concept and pneumatic control concept about type KZ4A AC drive electric locomotive.