Direct vector control of induction motors based on independent estimation of resistance and flux

Kang Zhi Liu; Masashi Yokoo; Keiichiro Kondo

doi:10.1109/ASCC.2015.7244486

Direct vector control of induction motors based on independent estimation of resistance and flux

Kang Zhi Liu, Masashi Yokoo, Keiichiro Kondo

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

1 Citation (Scopus)

Abstract

This paper deals with the direct vector control (DVC) of induction motors. It is well known that the estimation of rotor flux plays a fundamental role in the DVC and the estimation precision is significantly affected by the motor resistance. So estimation of resistance is indispensable in practice. For fast estimation of the resistance, it is necessary to slow down the convergence rate of the current estimate. On the other hand, for fast estimation of the rotor flux, it is necessary to speed up its convergence rate. It is very difficult to realize such a trade-off in convergence rates in the full order observer. In this paper, we propose to decouple the current observer from the flux observer so as to realize independent convergence rates. Simulation results of the proposed method show a superior performance in the torque and flux responses.

Original language	English
Title of host publication	2015 10th Asian Control Conference
Subtitle of host publication	Emerging Control Techniques for a Sustainable World, ASCC 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781479978625
DOIs	https://doi.org/10.1109/ASCC.2015.7244486
Publication status	Published - 2015 Sept 8
Externally published	Yes
Event	10th Asian Control Conference, ASCC 2015 - Kota Kinabalu, Malaysia Duration: 2015 May 31 → 2015 Jun 3

Other

Other	10th Asian Control Conference, ASCC 2015
Country/Territory	Malaysia
City	Kota Kinabalu
Period	15/5/31 → 15/6/3

Keywords

Current observer
Direct vector control
Induction motor
Parameter adaptation
Rotor flux observer

ASJC Scopus subject areas

Control and Systems Engineering

Access to Document

10.1109/ASCC.2015.7244486

Cite this

Direct vector control of induction motors based on independent estimation of resistance and flux. / Liu, Kang Zhi; Yokoo, Masashi; Kondo, Keiichiro.
2015 10th Asian Control Conference: Emerging Control Techniques for a Sustainable World, ASCC 2015. Institute of Electrical and Electronics Engineers Inc., 2015. 7244486.

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

Liu, KZ, Yokoo, M & Kondo, K 2015, Direct vector control of induction motors based on independent estimation of resistance and flux. in 2015 10th Asian Control Conference: Emerging Control Techniques for a Sustainable World, ASCC 2015., 7244486, Institute of Electrical and Electronics Engineers Inc., 10th Asian Control Conference, ASCC 2015, Kota Kinabalu, Malaysia, 15/5/31. https://doi.org/10.1109/ASCC.2015.7244486

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abstract = "This paper deals with the direct vector control (DVC) of induction motors. It is well known that the estimation of rotor flux plays a fundamental role in the DVC and the estimation precision is significantly affected by the motor resistance. So estimation of resistance is indispensable in practice. For fast estimation of the resistance, it is necessary to slow down the convergence rate of the current estimate. On the other hand, for fast estimation of the rotor flux, it is necessary to speed up its convergence rate. It is very difficult to realize such a trade-off in convergence rates in the full order observer. In this paper, we propose to decouple the current observer from the flux observer so as to realize independent convergence rates. Simulation results of the proposed method show a superior performance in the torque and flux responses.",

keywords = "Current observer, Direct vector control, Induction motor, Parameter adaptation, Rotor flux observer",

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AU - Yokoo, Masashi

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N2 - This paper deals with the direct vector control (DVC) of induction motors. It is well known that the estimation of rotor flux plays a fundamental role in the DVC and the estimation precision is significantly affected by the motor resistance. So estimation of resistance is indispensable in practice. For fast estimation of the resistance, it is necessary to slow down the convergence rate of the current estimate. On the other hand, for fast estimation of the rotor flux, it is necessary to speed up its convergence rate. It is very difficult to realize such a trade-off in convergence rates in the full order observer. In this paper, we propose to decouple the current observer from the flux observer so as to realize independent convergence rates. Simulation results of the proposed method show a superior performance in the torque and flux responses.

AB - This paper deals with the direct vector control (DVC) of induction motors. It is well known that the estimation of rotor flux plays a fundamental role in the DVC and the estimation precision is significantly affected by the motor resistance. So estimation of resistance is indispensable in practice. For fast estimation of the resistance, it is necessary to slow down the convergence rate of the current estimate. On the other hand, for fast estimation of the rotor flux, it is necessary to speed up its convergence rate. It is very difficult to realize such a trade-off in convergence rates in the full order observer. In this paper, we propose to decouple the current observer from the flux observer so as to realize independent convergence rates. Simulation results of the proposed method show a superior performance in the torque and flux responses.

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KW - Direct vector control

KW - Induction motor

KW - Parameter adaptation

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Direct vector control of induction motors based on independent estimation of resistance and flux

Abstract

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Keywords

ASJC Scopus subject areas

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