Voltage traction converter which consists of 4qs and PWM inverter is the elementary circuit of electric locomotive's main converter.
由四象限脉冲整流器和PWM逆变器组成的电压型牵引变流器已成为交流供电的电力机车、电动车组主变流器的基本电路形式。
参考来源 - 变频调速系统功率分析仪的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The separate operation of the main converter and the output voltage control are studied.
研究了主变换器的单独运行及其输出电压的控制。
The main converter commutation process due to regenerative braking is also analyzed, and reasons of regenerative overturn caused by pantograph ju…
文章还分析了再生制动时主变流器的换相过程，并对跳弓拉弧时引起再生颠覆的原因也作了说明。
The system characteristics of main converter drive control unit of Central China Star AC drive EMUs is described. Thehardware and software functions are introduced in details.
阐述了“中原之星”号交流传动电动车组主变流器传动控制单元的系统特点，并对其硬件功能和软件功能做了详细的介绍。
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