Title :
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
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;
Conference_Titel :
Power Conversion Conference - Nagaoka 1997., Proceedings of the
Print_ISBN :
0-7803-3823-5
DOI :
10.1109/PCCON.1997.645589
