Adjustable frequency drives (also known as variable frequency drives) adjust a motor's speed to closely match output requirements, resulting in a typical energy savings of 10 to 50 percent.
调频驱动器(也称为变频驱动器)能够调节电动机速率以最大限度满足输出要求，可节省10% - 50%的能量。
When nonlinear loads, such as adjustable speed motor drives, affect a sinusoidal power source, the voltage waveform is distorted and becomes nonsinusoidal.
当加上非线性负载如调速电动机驱动器时，会影响正弦电源。电压波形畸变变成非正弦波。
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