A decoupling method for current regulation in bearingless motors using AC suspension current

Kimio Hijikata; Nozomu Ando; Masatsugu Takemoto; Satoshi Ogasawara

doi:10.1109/ICEMS.2014.7013871

A decoupling method for current regulation in bearingless motors using AC suspension current

Kimio Hijikata, Nozomu Ando, Masatsugu Takemoto, Satoshi Ogasawara

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

4 Citations (Scopus)

Abstract

This paper introduces a novel decoupling method for current regulation in high-speed bearingless motors using AC suspension current. The frequency of the suspension current increases in proportion to rotating speed in the bearingless motors using AC suspension current, and regulating the suspension current is difficult at high speeds rotation. In previous research, a current regulation method is used that convert AC to DC using a rotating coordinate system. However, that method has interference voltages which make the system unstable. In this paper, we propose a novel decoupling method for the suspension current regulation. In the experiment, stable levitation of the bearingless motor is achieved at 30000 min^-1 by using the proposed decoupling controller.

Original language	English
Title of host publication	2014 17th International Conference on Electrical Machines and Systems, ICEMS 2014
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	2310-2314
Number of pages	5
ISBN (Electronic)	9781479951611
DOIs	https://doi.org/10.1109/ICEMS.2014.7013871
Publication status	Published - 2014
Externally published	Yes
Event	2014 17th International Conference on Electrical Machines and Systems, ICEMS 2014 - Hangzhou, China Duration: Oct 22 2014 → Oct 25 2014

Publication series

Name	2014 17th International Conference on Electrical Machines and Systems, ICEMS 2014

Conference

Conference	2014 17th International Conference on Electrical Machines and Systems, ICEMS 2014
Country/Territory	China
City	Hangzhou
Period	10/22/14 → 10/25/14

ASJC Scopus subject areas

Electrical and Electronic Engineering
Mechanical Engineering

Access to Document

10.1109/ICEMS.2014.7013871

Cite this

Hijikata, K., Ando, N., Takemoto, M., & Ogasawara, S. (2014). A decoupling method for current regulation in bearingless motors using AC suspension current. In 2014 17th International Conference on Electrical Machines and Systems, ICEMS 2014 (pp. 2310-2314). Article 7013871 (2014 17th International Conference on Electrical Machines and Systems, ICEMS 2014). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICEMS.2014.7013871

A decoupling method for current regulation in bearingless motors using AC suspension current. / Hijikata, Kimio; Ando, Nozomu; Takemoto, Masatsugu et al.
2014 17th International Conference on Electrical Machines and Systems, ICEMS 2014. Institute of Electrical and Electronics Engineers Inc., 2014. p. 2310-2314 7013871 (2014 17th International Conference on Electrical Machines and Systems, ICEMS 2014).

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

Hijikata, K, Ando, N, Takemoto, M & Ogasawara, S 2014, A decoupling method for current regulation in bearingless motors using AC suspension current. in 2014 17th International Conference on Electrical Machines and Systems, ICEMS 2014., 7013871, 2014 17th International Conference on Electrical Machines and Systems, ICEMS 2014, Institute of Electrical and Electronics Engineers Inc., pp. 2310-2314, 2014 17th International Conference on Electrical Machines and Systems, ICEMS 2014, Hangzhou, China, 10/22/14. https://doi.org/10.1109/ICEMS.2014.7013871

Hijikata K, Ando N, Takemoto M, Ogasawara S. A decoupling method for current regulation in bearingless motors using AC suspension current. In 2014 17th International Conference on Electrical Machines and Systems, ICEMS 2014. Institute of Electrical and Electronics Engineers Inc. 2014. p. 2310-2314. 7013871. (2014 17th International Conference on Electrical Machines and Systems, ICEMS 2014). doi: 10.1109/ICEMS.2014.7013871

Hijikata, Kimio ; Ando, Nozomu ; Takemoto, Masatsugu et al. / A decoupling method for current regulation in bearingless motors using AC suspension current. 2014 17th International Conference on Electrical Machines and Systems, ICEMS 2014. Institute of Electrical and Electronics Engineers Inc., 2014. pp. 2310-2314 (2014 17th International Conference on Electrical Machines and Systems, ICEMS 2014).

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title = "A decoupling method for current regulation in bearingless motors using AC suspension current",

abstract = "This paper introduces a novel decoupling method for current regulation in high-speed bearingless motors using AC suspension current. The frequency of the suspension current increases in proportion to rotating speed in the bearingless motors using AC suspension current, and regulating the suspension current is difficult at high speeds rotation. In previous research, a current regulation method is used that convert AC to DC using a rotating coordinate system. However, that method has interference voltages which make the system unstable. In this paper, we propose a novel decoupling method for the suspension current regulation. In the experiment, stable levitation of the bearingless motor is achieved at 30000 min-1 by using the proposed decoupling controller.",

author = "Kimio Hijikata and Nozomu Ando and Masatsugu Takemoto and Satoshi Ogasawara",

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AB - This paper introduces a novel decoupling method for current regulation in high-speed bearingless motors using AC suspension current. The frequency of the suspension current increases in proportion to rotating speed in the bearingless motors using AC suspension current, and regulating the suspension current is difficult at high speeds rotation. In previous research, a current regulation method is used that convert AC to DC using a rotating coordinate system. However, that method has interference voltages which make the system unstable. In this paper, we propose a novel decoupling method for the suspension current regulation. In the experiment, stable levitation of the bearingless motor is achieved at 30000 min-1 by using the proposed decoupling controller.

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A decoupling method for current regulation in bearingless motors using AC suspension current

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