Under steady state, the four-quadrant working principle of PWM rectifier has been explained here, the key for which has been found to be ac-side current control.
在稳态条件下，分析了电压型PWM整流器四象限运行工作原理，得出关键在于网侧电流控制的结论。
Because the clamp effect of DC voltage source, AC side output the rectangular wave voltage waveform, and it has nothing to do with the load impedance Angle.
由于直流电压源的钳位作用，交流侧输出电压波形为矩形波，并且与负载阻抗角无关。
In power converters, unbalances generate undesirable DC ripple and non characteristical harmonics in the AC side.
在电力变换器中，不平衡会产生不希望的直流波动以及交流侧无特征的谐波。
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