NDLI: Direct field-oriented control of induction motor with iron-core loss compensation and robust parameter identification

Content Provider	IEEE Xplore Digital Library
Author	Noguchi, T. Omura, T. Hiraishi, D.
Copyright Year	2001
Description	Author affiliation: Nagaoka Univ. of Technol., Japan (Noguchi, T.)
Abstract	This paper focuses on an accurate flux and torque control strategy of a direct field-oriented induction motor drive incorporating both iron-core loss compensation and robust parameter identification. The fundamental control algorithm is based on the direct field orientation, which essentially requires rotor flux estimation using several motor parameters and detection of line currents and rotor position. In order to suppress the flux estimation error caused by the parameter mismatch, the magnetizing inductance and the rotor resistance are identified insensitively to the stator resistance by using instantaneous reactive power. However, due to a model mismatch associated with the equivalent iron-core loss resistance, neither the field orientation nor the parameter identification can be achieved as is expected, which mainly results in degradation of flux and torque control accuracy. This paper describes characteristics of the motor parameters precisely measured under various operating conditions, the influence of iron-core loss resistance on the field orientation and the parameter identification, and a compensation technique to obtain higher controllability than conventional field-oriented control techniques. Effectiveness of the proposed technique has been examined through experimental tests as well as computer simulations, and the absolute accuracy and linearity of the motor torque has been improved as a result.
Sponsorship	IEEE Ind. Electron. Soc.
Starting Page	1201
Ending Page	1206
File Size	616202
Page Count	6
File Format	PDF
ISBN	0780371089
DOI	10.1109/IECON.2001.975953
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-11-29
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Induction motors Parameter estimation Rotors Torque control Induction motor drives Robust control Estimation error Magnetic flux Inductance Stators
Content Type	Text
Resource Type	Article

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