Sensorless speed estimation of induction motor based on the secondary and primary resistance on-line identification without any additional signal injection

Author

Akatsu, Kan ; Kawamura, Atsuo

Author_Institution

Dept. of Electr. & Comput. Eng., Yokohama Nat. Univ., Japan

Volume

2

fYear

1998

fDate

17-22 May 1998

Firstpage

1575

Abstract

In the low speed region, it is difficult to estimate the rotor speed of the induction motor, because the machine parameter (especially R₂) has a strong influence on the speed estimation. It is known that the simultaneous estimation of the speed and R₂ is impossible. In this paper the R₂ estimation in the transient state without adding any additional signal to the stator current is proposed, and the R₁ is estimated from the instantaneous reactive power. These algorithms are verified by digital simulations and experiments

Keywords

digital simulation; electric machine analysis computing; electric resistance; induction motors; least mean squares methods; parameter estimation; reactive power; rotors; stators; digital simulation; induction motor; instantaneous reactive power; least mean square algorithms; primary resistance on-line identification; rotor speed estimation; secondary resistance on-line identification; sensorless speed estimation; signal injection; stator current; transient state; Angular velocity; Electric resistance; Electrical resistance measurement; Frequency estimation; Induction motors; Rotors; Signal processing; State estimation; Stators; Velocity measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 1998. PESC 98 Record. 29th Annual IEEE

Conference_Location

Fukuoka

ISSN

0275-9306

Print_ISBN

0-7803-4489-8

Type

conf

DOI

10.1109/PESC.1998.703388

Filename

703388