6SL3352-1AE38-4CA1

6SL3352-1AE38-4CA1

6SL3352-1AE38-4CA1

6SL3352-1AE38-4CA1

按的规则对各脉冲的宽度进行调制，既可改变逆变电路输出电压的大小，也可改变输出频率。PWM控制的基本原理很早就已经提出，但是受电力电子器件发展水平的制约，在上世纪80年代以前一直未能实现。直到进入上世纪80年代，随着全控型电力电子器件的出现和迅速发展，PWM控制技术才真正得到应用。

PWM实现的原理是通过锯齿波/三角波(载波)所需要合成的波形(调制波)进行比较，然后确定PWM所需要输出的极性，通常是ON或者是OFF，因为一般都是作用到开关元器件上

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