Parameter Sensitivity Analysis of Flux Observers for Induction Motors

Author

Yuan, Zhenhuan ; Lu, Haihui ; Kerkman, Russel J. ; Nondahl, Thomas A. ; Lukaszewski, Richard A.

fYear

2007

Firstpage

1015

Lastpage

1022

Abstract

This paper analyzes the effect of the variation of machine parameters on flux observers in the steady-state condition by the frequency-domain method. Both the flux estimation and the torque estimation are evaluated. The frequency response function (FRF) expressed by the ratio of the estimated flux/torque to the corresponding physical one is derived to evaluate the parameter sensitivity. The flux observers investigated in this paper include the open-loop voltage model, the open-loop current model, and three types of closed-loop adaptive flux observers with PI regulator. Computer simulations are conducted to validate the theoretical analysis.

Keywords

frequency-domain analysis; induction motors; machine theory; magnetic flux; observers; parameter estimation; PI regulator; closed-loop adaptive flux observer; flux estimation; frequency response function; frequency-domain method; induction motors; machine parameter variation; open-loop current model; open-loop voltage model; parameter sensitivity analysis; steady-state condition; torque estimation; Computer simulation; Frequency domain analysis; Frequency estimation; Frequency response; Induction motors; Regulators; Sensitivity analysis; Steady-state; Torque; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 2007. 42nd IAS Annual Meeting. Conference Record of the 2007 IEEE

Conference_Location

New Orleans, LA

ISSN

0197-2618

Print_ISBN

978-1-4244-1259-4

Electronic_ISBN

0197-2618

Type

conf

DOI

10.1109/07IAS.2007.157

Filename

4347906