Hybrid axially active-passive bearingless motor using Figure-8 shaped coils

カテゴリ: 研究会(論文単位)

論文No: MD23111,RM23086

グループ名: 【D】産業応用部門 モータドライブ/【D】産業応用部門 回転機合同研究会

発行日: 2023/10/08

タイトル(英語): Hybrid axially active-passive bearingless motor using Figure-8 shaped coils

著者名: Hothur Komal Vishnu Chaitanya(Tokyo Institute of Technology),Fujii Yusuke(Tokyo Institute of Technology),Chiba Akira(Tokyo Institute of Technology)

著者名(英語): Vishnu Chaitanya Hothur Komal(Tokyo Institute of Technology),Yusuke Fujii(Tokyo Institute of Technology),Akira Chiba(Tokyo Institute of Technology)

キーワード: Null Flux coils|Electrodynamic suspension|Active control|Passive control|Levitation|Null Flux coils|Electrodynamic suspension|Active control|Passive control|Levitation

要約(日本語): This paper describes a hybrid bearingless motor with both passive and active axial stabilization. Passive stabilization through Null flux coils has earlier been proposed in various papers. However, the axial restoring force and the axial stiffness generated in these passively stabilized machines are very low at low rotational speeds. This passive force is not sufficient enough to counteract the axial load and destabilizing stiffness due to the radial permanent magnetic bearings, thereby preventing the rotor from levitating at low rotational speeds. This paper proposes a solution to this problem by introducing an external inductance connected to the lower coil of the figure-8 shaped coil set. The electrodynamic stiffness has been chosen as the parameter to decide the value of the external inductance connected. The effect of the external inductance on the axial force, braking torque and motor torque has been analysed.

要約(英語): This paper describes a hybrid bearingless motor with both passive and active axial stabilization. Passive stabilization through Null flux coils has earlier been proposed in various papers. However, the axial restoring force and the axial stiffness generated in these passively stabilized machines are very low at low rotational speeds. This passive force is not sufficient enough to counteract the axial load and destabilizing stiffness due to the radial permanent magnetic bearings, thereby preventing the rotor from levitating at low rotational speeds. This paper proposes a solution to this problem by introducing an external inductance connected to the lower coil of the figure-8 shaped coil set. The electrodynamic stiffness has been chosen as the parameter to decide the value of the external inductance connected. The effect of the external inductance on the axial force, braking torque and motor torque has been analysed.

本誌: 2023年10月11日-2023年10月12日モータドライブ/回転機合同研究会-1

本誌掲載ページ: 25-30 p

原稿種別: 英語

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