系统采用间接矢量控制技术，通过高频交流脉冲密度调制接口变换器，对功率进行协调控制。
The suggested system makes use of a single phase HFAC pulse density modulation(PDM) converter as the interface to connect energy storage unit and power source for induction motor drive system.
该文介绍了一种采用脉冲密度调制(PDM)控制策略的串联谐振型塑料薄膜表面处理电源的研制。
This paper presents a pulse density modulated (PDM) series resonant inverter developed for plastic film surface treater. The use of the PDM inverter enables the constant frequency and voltage.
该设计集成了脉冲宽度调制（PWM）和脉冲密度调制（PDM）两种调制方式，并可以在两者间切换。
This controller integrates pulse width modulation(PWM) and pulse density modulation(PDM) together, and can easily change between the two modulations.
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