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发明公开
CN106411156A 一种12脉波相控直流电源均流控制方法及电路 失效 - 权利终止

一种12脉波相控直流电源均流控制方法及电路
摘要：
本发明涉及一种12脉波相控直流电源均流控制方法及电路，该方法使两组整流桥均设置均流环，两均流环的给定信号相同：当恒压充电时，均流环的给定信号为给定电压信号与直流电源输出电压信号的误差信号；当恒流充电时，均流环的给定信号为给定电流信号与直流电源输出电流信号之差经过PI之后与直流电源输出电压的误差信号。本发明实现输出稳压或者稳流控制功能的同时使两组三相整流桥的输出电流相等，实现了均流控制；能够防止模块运行在输出电流临界状态，保证变换器并联运行的可靠性。
摘要（英）：

The invention relates to a current sharing control method and a current sharing control circuit of a 12-pulse phase-controlled DC power supply. According to the current sharing control method, two groups of rectifying bridges are each provided with a current sharing ring, and giving signals of the two current sharing ring are identical; when in constant-voltage charging, the giving signal of each current sharing ring is an error signal of a given voltage signal and a DC power supply output voltage signal; and when in constant-current charging, the giving signal of each current sharing ring is an error signal of a DC power supply output voltage and a difference between a giving current signal and a DC power supply output current signal through PI. The current sharing control method and the current sharing control circuit make output currents of the two groups of three-phase rectifying bridges equal while realizing an output voltage-stabilizing or current-stabilizing control function, achieves current sharing control, can prevent a module from operating in an output current critical state, and ensure the reliability of parallel operation of converters.

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