零相電圧を利用した零速度運転時のキャリア騒音拡散法

カテゴリ: 論文誌(論文単位)

グループ名: 【D】産業応用部門

発行日: 2017/04/01

タイトル(英語): Method for Diffusing Carrier Noise under Zero-Speed Condition using a Zero-Sequence Voltage

著者名: 綾野　秀樹（東京工業高等専門学校），石川　清太郎（東京工業高等専門学校），松井　義弘（東京工業高等専門学校）

著者名(英語): Hideki Ayano (National Institute of Technology, Tokyo College), Seitaro Ishikawa (National Institute of Technology, Tokyo College), Yoshihiro Matsui (National Institute of Technology, Tokyo College)

キーワード: キャリア騒音，零相電圧，零速度，永久磁石電動機，ランダム電圧　　carrier noise，zero-sequence voltage，zero speed，permanent magnet motor，random voltage

要約(英語): In this paper, a technique is proposed to reduce the carrier noise of pulse width modulation (PWM) inverters for a permanent magnet motor drive. The carrier noise is generated by the motor and the reactor driven by the inverter and affected by the switching frequency. When a motor rotates and drives a machine, the carrier noise is hidden by the machine noise. However, when the motor speed is approximately zero, the carrier noise becomes dominant and raucous. The typical method to reduce the noise employs a switching frequency higher than the audible frequency of human hearing. However, the increase in switching frequency results in the inverter suffering a higher switching loss and lower efficiency. In particular, when the permanent magnet motor operates at approximately zero speed and full-load, for example, in the hill-start conditions of electric vehicles and the start and stop conditions of elevators, the current flows in specific power devices and the switching loss further increases. The proposed technique uses a zero-sequence voltage, which is generated randomly with the M-sequence signal, and diffuses the frequency components of the ripple contained in the current. The technique is able to reduce the noise without increasing the switching frequency of the inverter when the motor speed is almost zero. Simulation and experimental results show that the proposed technique can diffuse the carrier noise and the cycle of the M-sequence signal changes the diffusion effect of the carrier noise.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.137 No.4 （2017）

本誌掲載ページ: 302-309 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejias/137/4/137_302/_article/-char/ja/