Modern AC/DC converters with bidirectional power flow employing PWM boost topology generate harmonic distortions of input current in relatively high frequency range tightly related to modulation carrier frequency. These frequencies and its multiples in typical applications are usually located in frequency range from single up to several of kHz. Increased harmonic emission in this frequency range can easily and harmfully influence sensitive control and measurement systems what occurs more often nowadays in applications where high power AC/DC PWM boost converted are used. This paper presents a comparison of current harmonic emission of PWM boost rectifiers with relation to classic diode rectifiers. New class of electromagnetic compatibility problems arising in power system are underlined as a result of increased harmonic distortions emission in frequency range up to 9 kHz.
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机译：采用PWM升压拓扑结构，具有双向功率流的现代AC / DC转换器会在与调制载波频率紧密相关的较高频率范围内产生输入电流的谐波失真。在典型应用中，这些频率及其倍数通常位于从单个到几kHz的频率范围内。在此频率范围内增加的谐波发射会轻易并有害地影响灵敏的控制和测量系统，而在如今使用高功率AC / DC PWM升压转换的应用中，这种情况经常发生。本文介绍了PWM升压整流器与经典二极管整流器的电流谐波发射的比较。由于在高达9 kHz的频率范围内发射的谐波失真增加，因此强调了电力系统中出现的新型电磁兼容性问题。
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