Position estimation in induction machines utilizing rotor bar slot harmonics and carrier frequency signal injection

Author

Degner, M.W. ; Lorenz, R.D.

Author_Institution

Dept. of Mech. Eng., Wisconsin Univ., Madison, WI, USA

Volume

1

fYear

1997

fDate

3-6 Aug 1997

Firstpage

69

Abstract

This paper presents a simple and robust way of utilizing harmonic saliencies for the estimation of rotor position. A carrier frequency voltage excitation is used to produce a carrier frequency current, which contains the desired spatial information. A closed-loop, tracking observer is then used to estimate the rotor position. Due to its reliance on a spatial saliency and carrier frequency signal injection, the technique is very robust over a wide speed range, including low and zero speed

Keywords

closed loop systems; harmonics; induction motors; machine control; machine theory; observers; parameter estimation; rotors; carrier frequency current; carrier frequency signal injection; carrier frequency voltage excitation; closed-loop tracking observer; harmonic saliencies; induction machines; induction motor; rotor bar slot harmonics; rotor position estimation; spatial saliency; AC machines; Costs; Frequency estimation; Inductance; Induction machines; Mechanical sensors; Robustness; Rotors; Stators; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Conversion Conference - Nagaoka 1997., Proceedings of the

Conference_Location

Nagaoka

Print_ISBN

0-7803-3823-5

Type

conf

DOI

10.1109/PCCON.1997.645588

Filename

645588