永久磁石モータの零相電流を用いた磁気浮上システムにおける浮上位置決め精度の改善

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: 2019/03/01

タイトル(英語): Positioning Accuracy Improvement for a Magnetically Levitated System Using Zero-Sequence Current of a Permanent Magnet Motor

著者名: 藤井　勇介（静岡大学 工学部 機械工学科），朝間　淳一（静岡大学 工学部 機械工学科），大岩　孝彰（静岡大学 工学部 機械工学科），千葉　明（東京工業大学 電気電子工学専攻）

著者名(英語): Yusuke Fujii (Shizuoka University), Junichi Asama (Shizuoka University), Takaaki Oiwa (Shizuoka University), Akira Chiba (Tokyo Institute of Technology)

キーワード: 磁気浮上，永久磁石モータ，零相電流，外乱オブザーバ，位置決め精度　　magnetically levitation，permanent magnet motor，zero-sequence current，disturbance observer，positioning accuracy

要約(英語): We have proposed a driving method for both a three-phase permanent magnet motor drive and one-degree-of-freedom controlled magnetic suspension using only one three-phase inverter. The suspension winding is connected between the neutral-point of the Y-connected motor winding and the middle point of the voltage sources. Hence, the suspension force is actively controlled by the zero-sequence current. The experimental result showed that the vibration of the magnetic suspension increased under the loaded condition of the motor compared with that under no load. The vibration mainly includes the fundamental and 3rd components of the driving frequency, 1f and 3f. This paper focuses on the positioning accuracy improvement of this magnetic suspension system. We have found that the vibration 1f is caused by the detection error of the current sensor and the three-phase unbalanced resistance and inductance values, and the vibration 3f is caused by the PWM drive. To improve the positioning accuracy, we investigated both the current detection method and the observer-based voltage disturbance compensation. The experimental results demonstrated that these compensations improved the positioning accuracy of the magnetic suspension.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.139 No.3 （2019） 特集：半導体電力変換研究会

本誌掲載ページ: 322-329 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/139/3/139_322/_article/-char/ja/