Mechanical-sensorless induction motor drive based only on dc-link measurements

Author

Sonnaillon, M.O. ; Bisheimer, G. ; De Angelo, Cristian ; Solsona, J. ; Garcia, G.O.

Author_Institution

Fac. de Ingenieria, UNRC, Rio Cuarto

Volume

153

Issue

6

fYear

2006

fDate

11/1/2006 12:00:00 AM

Firstpage

815

Lastpage

822

Abstract

Sensor count reduction for high-performance induction motor (IM) drives is considered. A novel strategy to compute the three phase currents, based on a single current sensor and an adaptive observer, is proposed. The observer estimates the motor state variables, allowing then implementing an IM field-oriented controlled (FOC) drive with closed speed loop based only on DC-link measurements. To demonstrate the practical feasibility of this proposal, representative experimental results, obtained with a FOC experimental prototype, are presented. The FOC prototype showed results similar to those from a conventional FOC drive with individual phase current sensors. The sensor count reduction achieved represents a significant cost diminution in the implementation of low-power high-performance drives

Keywords

adaptive control; closed loop systems; cost reduction; electric sensing devices; induction motor drives; machine vector control; observers; DC-link measurement; adaptive observer; closed speed loop; cost diminution; current sensor; field-oriented control; sensorless induction motor drive;

fLanguage

English

Journal_Title

Electric Power Applications, IEE Proceedings -

Publisher

iet

ISSN

1350-2352

Type

jour

DOI

10.1049/ip-epa:20050552

Filename

4015868