前馈信号同时包含了电网电压和负载的信息，通过快速调节交流侧进线电流，使得系统功率平衡得以维持。
Feedforward signal includes the information of both grid voltage and DC side load. Power balance between the input and output can be maintained by adjusting AC side currents.
为了降低逆变器输出电压的谐波，简单且实用的方法是在逆变器的交流输出侧加装l C滤波器。
In order to reduce total harmonic distortion factor of the inverter's output voltage, adding LC filter to inverter's output is a simple and practical method adopted extensively currently.
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。
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.
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