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Novel modulation technique to reduce acoustic noise and switching loss
Electrical Engineering in Japan ( IF 0.4 ) Pub Date : 2021-02-12 , DOI: 10.1002/eej.23305 Hideki Ayano 1 , Masayoshi Kitada 1 , Yuki Iguchi 1 , Yoshihiro Matsui 2 , Jun‐ichi Itoh 3
Electrical Engineering in Japan ( IF 0.4 ) Pub Date : 2021-02-12 , DOI: 10.1002/eej.23305 Hideki Ayano 1 , Masayoshi Kitada 1 , Yuki Iguchi 1 , Yoshihiro Matsui 2 , Jun‐ichi Itoh 3
Affiliation
This paper proposes a novel modulation technique that reduces both motor acoustic noise and switching loss. The conventional discontinuous PWM method can reduce the switching loss to a greater extent compared to the conventional three‐phase modulation method; however, the acoustic noise of the motor increases. The proposed technique adjusts the zero‐sequence voltage given to the voltage references in such a way that the discontinuous part of the conventional discontinuous PWM method is changed smoothly. The switching loss with the proposed technique can be reduced to 58% of that with the conventional three‐phase modulation method. The experimental results show that the acoustic noise can be reduced to a greater extent with the proposed technique compared to that with the conventional discontinuous PWM method.
中文翻译:
减少噪音和开关损耗的新型调制技术
本文提出了一种新颖的调制技术,可同时降低电动机的声音噪声和开关损耗。与传统的三相调制方法相比,传统的不连续PWM方法可以更大程度地降低开关损耗。但是,电动机的声音会增加。所提出的技术调整给电压参考的零序电压,以使传统的不连续PWM方法的不连续部分平滑变化。所提出的技术的开关损耗可以降低到传统三相调制方法的开关损耗的58%。实验结果表明,与传统的不连续PWM方法相比,所提出的技术可以更大程度地降低噪声。
更新日期:2021-02-12
中文翻译:
减少噪音和开关损耗的新型调制技术
本文提出了一种新颖的调制技术,可同时降低电动机的声音噪声和开关损耗。与传统的三相调制方法相比,传统的不连续PWM方法可以更大程度地降低开关损耗。但是,电动机的声音会增加。所提出的技术调整给电压参考的零序电压,以使传统的不连续PWM方法的不连续部分平滑变化。所提出的技术的开关损耗可以降低到传统三相调制方法的开关损耗的58%。实验结果表明,与传统的不连续PWM方法相比,所提出的技术可以更大程度地降低噪声。