Accurate estimation of rotor position and speed of induction motors near standstill

Author

Jiang, Jinsheng ; Holtz, Joachim

Author_Institution

Wuppertal Univ., Germany

Volume

1

fYear

1997

fDate

26-29 May 1997

Firstpage

1

Abstract

It is demonstrated by numerical analysis that the leakage inductance as seen from the stator windings of standard induction motors varies with the rotor position angle. The effect can be exploited to extract the rotor position, and speed, from measured stator voltages. The extraction algorithm is incorporated based on a modification of the pulsewidth modulator. Experimental results demonstrate position measurement with good noise rejection at any speed including standstill

Keywords

inductance; induction motors; machine theory; magnetic leakage; parameter estimation; position measurement; rotors; stators; voltage measurement; extraction algorithm; induction motors; leakage inductance; measured stator voltages; noise rejection; numerical analysis; position measurement; pulsewidth modulator; rotor position angle; rotor position estimation; rotor speed estimation; standstill; stator windings; Inductance; Induction motors; Numerical analysis; Position measurement; Pulse modulation; Rotors; Space vector pulse width modulation; Stator windings; Velocity measurement; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Drive Systems, 1997. Proceedings., 1997 International Conference on

Print_ISBN

0-7803-3773-5

Type

conf

DOI

10.1109/PEDS.1997.618623

Filename

618623