Real time implementation of a rotor time-constant online estimation scheme

Author

Ba-Razzouk, A. ; Chériti, A. ; Rajagopalan, V.

Author_Institution

Ind. Res. Chair, Univ. du Quebec a Trois-Rivieres, Que., Canada

Volume

2

fYear

1999

fDate

1999

Firstpage

927

Abstract

Implementation of AC drives insensitive to parameter variation is a challenge which interests many researchers in the field of high performance drives. In the case of drives controlled by the indirect rotor flux orientated control method (IRFOC), the rotor time-constant (τ_r=R_r/L_r) exerts a dominant role in the loss of dynamic performances and its variation results in creation of an undesirable coupling between flux and torque of the machine. This paper presents a new scheme for online estimation of this parameter using measurements of motor accessible variables (voltages, currents and speed). This scheme is tested by simulation in the MATLAB/SIMULINK environment and also real-time implemented on a TMS320C31 digital signal processor. Both simulation and experimental results are presented

Keywords

AC motor drives; control system analysis computing; control system synthesis; electric machine analysis computing; machine control; machine theory; parameter estimation; robust control; AC motor drives; MATLAB/SIMULINK environment; TMS320C31 digital signal processor; computer simulation; dynamic performance; parameter variation insensitivity; rotor time-constant online estimation scheme; Couplings; Current measurement; Frequency; Induction motors; Regulators; Rotors; Stators; Torque control; Velocity measurement; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics Society, 1999. IECON '99 Proceedings. The 25th Annual Conference of the IEEE

Conference_Location

San Jose, CA

Print_ISBN

0-7803-5735-3

Type

conf

DOI

10.1109/IECON.1999.816536

Filename

816536