Alleviation Technique for Thermal Concentration on Power Devices Driving a PMSM under Zero-Speed and High-Torque Condition

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カテゴリ: 論文誌(論文単位)グループ名: 【D】産業応用部門（英文）発行日: 2020/09/01タイトル(英語): Alleviation Technique for Thermal Concentration on Power Devices Driving a PMSM under Zero-Speed and High-Torque Conditi on著者名: Hideki Ayano (National Institute of Technology, Tokyo College), Ryohta Shimamoto (National Institute of Technology, Tokyo College), Takuma Noda (National Institute of Technology, Tokyo College), Takuma Horii (National Institute of Technology, Tokyo Colleg著者名(英語): Hideki Ayano (National Institute of Technology, Tokyo College), Ryohta Shimamoto (National Institute of Technology, Tokyo College), Takuma Noda (National Institute of Technology, Tokyo College), Takuma Horii (National Institute of Technology, Tokyo College), Yoshihiro Matsui (Fukuoka Institute of Technology)キーワード: power device temperature，PMSM，thermal concentration，zero-sequence voltage，zero speed，three-level inverter要約(英語): This work is concerned with a technique to alleviate thermal concentration on specific switching devices that drive a permanent magnet synchronous motor (PMSM) under zero-speed and high-torque condition. In this condition, e. g., start or stop of an elevator or hill-start of an electric vehicle, a large DC current flows in the PMSM, and the heat generated in the specific switching devices is locally concentrated. The proposed technique uses a zero-sequence voltage in a three-level inverter, and the polarity of the zero-sequence voltage is switched according to the magnetic pole position of the PMSM. The proposed technique can change the current paths in the inverter, and the loss concentrations in specific devices can be alleviated. The simulation results show that the amplitude and the time ratio of the zero-sequence voltage that depend on the magnetic pole position of the PMSM affect the temperature rise of the power device with the maximum temperature. In the experiment, the effectiveness of the proposed technique is evaluated using a small power inverter. This three-level inverter consists of discrete power devices so that the surface temperature of each device can be observed with a thermal camera. The experimental results show that the temperature rise of the device with the maximum temperature is reduced by about 31%.本誌: IEEJ Journal of Industry Applications Vol.9 No.5 （2020）本誌掲載ページ: 563-572 p原稿種別: 論文／英語電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejjia/9/5/9_563/_article/-char/ja/ Show more