著者

綾野 秀樹 北田 成祐 井口 雄紀 松井 義弘 伊東 淳一

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌D(産業応用部門誌) (ISSN:09136339)

巻号頁・発行日

vol.140, no.6, pp.442-449, 2020-06-01 (Released:2020-06-01)

参考文献数

25

被引用文献数

4

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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.