Position-sensorless control of surface-mount permanent-magnet AC (PMAC) motors at low speeds

Author

Toliyat, Hamid A. ; Hao, Lei ; Shet, Deepak S. ; Nondahl, Thomas A.

Author_Institution

Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA

Volume

49

Issue

1

fYear

2002

fDate

2/1/2002 12:00:00 AM

Firstpage

157

Lastpage

164

Abstract

A position-sensorless field-oriented control scheme for a surface-mount permanent-magnet AC (PMAC) motor is presented. A digital signal processor is used to implement the sensorless scheme. The PMAC stator is wound like that of a conventional three-phase induction motor. The coils of the motor are all brought out and it is possible to connect the motor in different configurations. Taps are also provided which are used for voltage measurements. By measuring the tap voltages, absolute position of the PMAC motor is estimated. The estimated position information is independent of the stator resistance, thus, this scheme is even applicable at low speeds. Results are presented to show the effectiveness of the new sensorless scheme

Keywords

coils; digital control; digital signal processing chips; machine control; parameter estimation; permanent magnet motors; position control; stators; synchronous motors; voltage measurement; back electromotive force; coils; digital signal processor; permanent-magnet synchronous motor; position-sensorless control; stator; stator resistance; surface-mount permanent-magnet AC motors; tap voltage measurements; AC motors; Coils; Digital signal processors; Electrical resistance measurement; Induction motors; Position measurement; Sensorless control; Stators; Voltage measurement; Wounds;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/41.982259

Filename

982259