永久磁石モータの零速度運転時における素子発熱集中緩和法

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: 2016/09/01

タイトル(英語): Alleviation Technique for Thermal Concentration on Specific Switching Devices in Zero-Speed Driving of PMSM

著者名: 綾野　秀樹（東京工業高等専門学校），浅井　亨太（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), Kyota Asai (National Institute of Technology, Tokyo College), Yoshihiro Matsui (National Institute of Technology, Tokyo College)

キーワード: 零相電圧，3レベルインバータ，中性点クランプ，永久磁石同期モータ，発熱集中，零速度　　zero-sequence voltage，3-level inverter，neutral-point clamped，permanent magnet synchronous motor，thermal concentration，zero-speed

要約(英語): In this paper, a technique is proposed for alleviating the thermal concentration on specific switching devices by using a zero-sequence voltage in a 3-level inverter that drives a permanent magnet synchronous motor (PMSM) in a zero-speed and high-torque condition. The use of the PMSM in home electronics and industrial products has become widespread, since it can realize miniaturization and a high efficiency drive. however, a large DC current flows when the PMSM is used in a zero-speed and high-torque condition, for example, in the hill-start of electric vehicles, start or stop of elevators, or servo lock of servo pressing machines, etc. In these cases, the current flows in the specific switching devices and heat generation is locally concentrated. This problem is unavoidable in a conventional 2-level inverter. A technique that can change the current path in a 3-level inverter and control the losses generated in the switching devices is proposed. We evaluated the effects of the proposed technique through a circuit simulation in which the electrical characteristics of a commercially available power device were applied. The proposed technique can reduce the highest loss of the switching devices in the 3-level inverter by about 40% as compared to that in a conventional inverter. Moreover, a method is proposed that suppresses the neutral point potential variation between the power supplies. This method can also reduce the maximum loss of the specific switching devices by about 30%.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.136 No.9 （2016）

本誌掲載ページ: 646-654 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/136/9/136_646/_article/-char/ja/