Sensorless speed estimation based on primary and secondary resistance estimation and output voltage compensation of induction motor

Author

Akatsu, Kan ; Kawamura, Atsuo

Author_Institution

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

Volume

1

fYear

1997

Firstpage

73

Abstract

In the very low speed region, it is difficult to estimate the rotor speed of the induction motor, because the machine parameter (especially R₂) has strong influence on the speed estimation. It is known that the simultaneous estimation of the speed and R₂ is impossible. In this paper R₂ estimation is proposed in the transient state without adding any additional signal to the stator current, and the output voltage compensation without the voltage sensors. R₁ is estimated from the instantaneous reactive power

Keywords

compensation; electric resistance; induction motors; machine control; parameter estimation; reactive power; rotors; field oriented control; frequency control type vector control; induction motor; instantaneous reactive power; output voltage compensation; primary resistance estimation; rotor speed estimation; secondary resistance estimation; sensorless speed estimation; transient state; very low speed region; Current measurement; Frequency estimation; Induction motors; Inverters; Machine vector control; Reactive power; Rotors; State estimation; Stators; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Conversion Conference - Nagaoka 1997., Proceedings of the

Print_ISBN

0-7803-3823-5

Type

conf

DOI

10.1109/PCCON.1997.645589

Filename

645589