负荷电流：(load current) 指的是设备正常运行（即带负荷时）的情况下，负载所吸收的电流。
If the load current has much higher harmonic or the rate of change is great, the high switching frequency and smaller inductance is required.
若负荷电流中较高次谐波电流较大或电流变化率较大,则需采用较高的开关频率和较小的电感。
参考来源 - 空间矢量PWM控制在有源电力滤波器中的应用研究·2,447,543篇论文数据，部分数据来源于NoteExpress
仅能在正常运行时断开负荷电流的开关。
Can only be disconnected in the normal run-time load current switching.
负荷电流由调节器通过半导体开关元件直接控制。
The load current is handled directly by the controller through semiconductor switching devices .
而畸变的负荷电流引起整个系统中母线电压畸变。
The distorted load current then causes distorted bus voltages to appear throughout the system.
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