电力推进系统电力电子噪声的主动抑制技术进展

Progress in Active Mitigation Technologies of Power Electronics Noise for Electrical Propulsion System

应用电力电子变流器的电力推进系统会带来电力电子噪声,并威胁可靠性。除了采用额外元件的无源滤波方法之外,采用结合脉宽调制(pulse width modulation,PWM)和拓扑结构的有源抑制方法可以得到更高的功率密度。该文介绍3种主要的抑制方法:变开关频率PWM、载波移相和零共模PWM方法,其中后两者是基于逆变器并联结构的方法。进一步地,可以应用载波移相或者零共模PWM设计双三相电机结构,实现直接在电机上对噪声进行抑制。这种结构是未来电力推进中一个有潜力的方案。

Application of power electronics converters in electrical propulsion system brings power electronics noise and threat of reliability. Beside passive filtering technologies with bulky extra components, active noise mitigation technologies through pulse width modulation(PWM) and topology can be with higher power density. Three major methods: variable switching frequency PWM, interleaved PWM and zero-CM PWM methods were introduced, with the latter two of them based on paralleled inverter architecture. Further, the dual-three-phase machine architecture can be designed together with interleaved PWM or zero-CM PWM, and achieve the noise mitigation directly on the machine. This architecture can be a potential candidate for future electrical propulsion system.