Basic characteristics of a permanent-magnet type bearingless motor with positive salient pole

Hirokazu Kusayanagi; Masatsugu Takemoto; Yasuhiro Tanaka; Akira Chiba; Tadashi Fukao

doi:10.1109/ICEMS12746.2007.4412320

Basic characteristics of a permanent-magnet type bearingless motor with positive salient pole

Hirokazu Kusayanagi, Masatsugu Takemoto, Yasuhiro Tanaka, Akira Chiba, Tadashi Fukao

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

4 Citations (Scopus)

Abstract

Various types of permanent-magnet type bearingless motors, which have integrated magnetic bearings with permanent magnet synchronous motors, have been developed actively. However, these motors cannot effectively generate electromagnetic suspension force for rotor shaft suspension, because suspension flux is attenuated owing to passing through high magnetic reluctance of permanent magnets. Accordingly, the authors have proposed a novel permanent-magnet type bearingless motor with positive salient pole that inductance L_d in the d-axis direction is greater than inductance L_q in the q-axis direction. In previous papers, it was shown with 2D-FEM that the proposed motor can generate the suspension force effectively, because the suspension flux does not pass through the permanent magnets. This paper introduces basic characteristics of torque and suspension force in the proposed motor with test results of a prototype machine.

Original language	English
Title of host publication	Proceeding of International Conference on Electrical Machines and Systems, ICEMS 2007
Publisher	IEEE Computer Society
Pages	1698-1703
Number of pages	6
ISBN (Print)	8986510081, 9788986510089
DOIs	https://doi.org/10.1109/ICEMS12746.2007.4412320
Publication status	Published - 2007
Externally published	Yes
Event	International Conference on Electrical Machines and Systems, ICEMS 2007 - Seoul, Korea, Republic of Duration: Oct 8 2007 → Oct 11 2007

Publication series

Name	Proceeding of International Conference on Electrical Machines and Systems, ICEMS 2007

Other

Other	International Conference on Electrical Machines and Systems, ICEMS 2007
Country/Territory	Korea, Republic of
City	Seoul
Period	10/8/07 → 10/11/07

Keywords

Bearingless motors
Magnetic bearings
Magnetic levitation
Permanent magnet motors
Synchronous motors

ASJC Scopus subject areas

Control and Systems Engineering
Electrical and Electronic Engineering

Access to Document

10.1109/ICEMS12746.2007.4412320

Cite this

Kusayanagi, H., Takemoto, M., Tanaka, Y., Chiba, A., & Fukao, T. (2007). Basic characteristics of a permanent-magnet type bearingless motor with positive salient pole. In Proceeding of International Conference on Electrical Machines and Systems, ICEMS 2007 (pp. 1698-1703). [4412320] (Proceeding of International Conference on Electrical Machines and Systems, ICEMS 2007). IEEE Computer Society. https://doi.org/10.1109/ICEMS12746.2007.4412320

Basic characteristics of a permanent-magnet type bearingless motor with positive salient pole. / Kusayanagi, Hirokazu; Takemoto, Masatsugu; Tanaka, Yasuhiro et al.
Proceeding of International Conference on Electrical Machines and Systems, ICEMS 2007. IEEE Computer Society, 2007. p. 1698-1703 4412320 (Proceeding of International Conference on Electrical Machines and Systems, ICEMS 2007).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Kusayanagi, H, Takemoto, M, Tanaka, Y, Chiba, A & Fukao, T 2007, Basic characteristics of a permanent-magnet type bearingless motor with positive salient pole. in Proceeding of International Conference on Electrical Machines and Systems, ICEMS 2007., 4412320, Proceeding of International Conference on Electrical Machines and Systems, ICEMS 2007, IEEE Computer Society, pp. 1698-1703, International Conference on Electrical Machines and Systems, ICEMS 2007, Seoul, Korea, Republic of, 10/8/07. https://doi.org/10.1109/ICEMS12746.2007.4412320

Kusayanagi H, Takemoto M, Tanaka Y, Chiba A, Fukao T. Basic characteristics of a permanent-magnet type bearingless motor with positive salient pole. In Proceeding of International Conference on Electrical Machines and Systems, ICEMS 2007. IEEE Computer Society. 2007. p. 1698-1703. 4412320. (Proceeding of International Conference on Electrical Machines and Systems, ICEMS 2007). doi: 10.1109/ICEMS12746.2007.4412320

Kusayanagi, Hirokazu ; Takemoto, Masatsugu ; Tanaka, Yasuhiro et al. / Basic characteristics of a permanent-magnet type bearingless motor with positive salient pole. Proceeding of International Conference on Electrical Machines and Systems, ICEMS 2007. IEEE Computer Society, 2007. pp. 1698-1703 (Proceeding of International Conference on Electrical Machines and Systems, ICEMS 2007).

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title = "Basic characteristics of a permanent-magnet type bearingless motor with positive salient pole",

abstract = "Various types of permanent-magnet type bearingless motors, which have integrated magnetic bearings with permanent magnet synchronous motors, have been developed actively. However, these motors cannot effectively generate electromagnetic suspension force for rotor shaft suspension, because suspension flux is attenuated owing to passing through high magnetic reluctance of permanent magnets. Accordingly, the authors have proposed a novel permanent-magnet type bearingless motor with positive salient pole that inductance Ld in the d-axis direction is greater than inductance Lq in the q-axis direction. In previous papers, it was shown with 2D-FEM that the proposed motor can generate the suspension force effectively, because the suspension flux does not pass through the permanent magnets. This paper introduces basic characteristics of torque and suspension force in the proposed motor with test results of a prototype machine.",

keywords = "Bearingless motors, Magnetic bearings, Magnetic levitation, Permanent magnet motors, Synchronous motors",

author = "Hirokazu Kusayanagi and Masatsugu Takemoto and Yasuhiro Tanaka and Akira Chiba and Tadashi Fukao",

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AU - Fukao, Tadashi

PY - 2007

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N2 - Various types of permanent-magnet type bearingless motors, which have integrated magnetic bearings with permanent magnet synchronous motors, have been developed actively. However, these motors cannot effectively generate electromagnetic suspension force for rotor shaft suspension, because suspension flux is attenuated owing to passing through high magnetic reluctance of permanent magnets. Accordingly, the authors have proposed a novel permanent-magnet type bearingless motor with positive salient pole that inductance Ld in the d-axis direction is greater than inductance Lq in the q-axis direction. In previous papers, it was shown with 2D-FEM that the proposed motor can generate the suspension force effectively, because the suspension flux does not pass through the permanent magnets. This paper introduces basic characteristics of torque and suspension force in the proposed motor with test results of a prototype machine.

AB - Various types of permanent-magnet type bearingless motors, which have integrated magnetic bearings with permanent magnet synchronous motors, have been developed actively. However, these motors cannot effectively generate electromagnetic suspension force for rotor shaft suspension, because suspension flux is attenuated owing to passing through high magnetic reluctance of permanent magnets. Accordingly, the authors have proposed a novel permanent-magnet type bearingless motor with positive salient pole that inductance Ld in the d-axis direction is greater than inductance Lq in the q-axis direction. In previous papers, it was shown with 2D-FEM that the proposed motor can generate the suspension force effectively, because the suspension flux does not pass through the permanent magnets. This paper introduces basic characteristics of torque and suspension force in the proposed motor with test results of a prototype machine.

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Basic characteristics of a permanent-magnet type bearingless motor with positive salient pole

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Keywords

ASJC Scopus subject areas

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