Implementation of generic sensorless direct field oriented control of AC motors on a low-cost, fixed-point digital signal processor

Author

Konghirun, Monkgol ; Xu, Longya ; Figoli, David

Author_Institution

Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA

Volume

1

fYear

2002

fDate

2002

Firstpage

304

Abstract

This paper presents an implementation of low cost, generic sensorless direct field oriented (GSDFO) control algorithm applicable to both induction (IM) and permanent-magnet synchronous motors (PMSM). The proposed algorithms are simple but maintain good performance over a normal speed operation. The stator flux is derived based upon the improved integration of back electromotive force (EMF), effective over a wide range of speed. The synchronous speed is simply calculated from the back EMF and stator flux whereas a slip is computed for IM additionally. The overall system is implemented in a TMS320LF2407EVM based controller for low cost. Experimental results are presented to verify the proposed algorithm

Keywords

AC motors; digital signal processing chips; electric potential; induction motors; machine vector control; magnetic flux; permanent magnet motors; slip (asynchronous machines); stators; synchronous motors; velocity control; AC motors; TMS320LF2407EVM based controller; back EMF; back electromotive force; fixed-point digital signal processor; generic sensorless direct field oriented control; induction motors; permanent magnet synchronous motors; slip; stator flux; synchronous speed; AC motors; Control systems; Costs; Digital signal processing; Digital signal processors; Force sensors; Sensorless control; Signal processing algorithms; Stators; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2002. APEC 2002. Seventeenth Annual IEEE

Conference_Location

Dallas, TX

Print_ISBN

0-7803-7404-5

Type

conf

DOI

10.1109/APEC.2002.989263

Filename

989263