高频脉冲宽度调制电力控制系统，可以实现用半导体开关。
High frequency pulse width modulation power control systems can be realized using semiconductor switches.
背后的原则，在整个过程中是平均电力交付是成正比的调制占空比。
The underlying principle in the whole process is that the average power delivered is directly proportional to the modulation duty cycle.
随机调制技术能够改善电力电子系统电磁兼容性。
Randomized modulation technique can improve the electromagnetic compatibility of power electronic system.
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