A precise torque and high efficiency control for Q-axis flux-based induction motor sensorless vector control system

Author

Tsuji, Mineo ; Chen, Shou ; Kai, Toshihiro ; Yamada, Eiji ; Hamasaki, Shin-ichi ; Del Pizzo, A.

Author_Institution

Dept. of Electr. & Electron. Eng., Nagasaki Univ.

fYear

2006

fDate

23-26 May 2006

Firstpage

990

Lastpage

995

Abstract

This paper presents a sensorless vector control system for induction motors by taking into account iron loss, in which a flux-observer-based method is applied. Since the flux observer is constructed in a synchronously rotating reference frame with respect to the rotor flux of a current model and the iron loss resistance of parallel exiting circuit is used, the proposed system is very simple and the compensation of iron loss related to the operating frequency is directly realized while calculating rotor fluxes and slip frequency. The accuracies of estimated torque and speed are improved. Furthermore, a high efficiency control method that minimizes the loss is proposed. The effectiveness of the proposed system has been verified by digital simulation and experimentation

Keywords

induction motors; machine vector control; observers; rotors; slip (asynchronous machines); torque control; Q-axis flux-based induction motors; digital simulation; flux-observer-based method; iron loss resistance; loss minimization; parallel exiting circuit; rotor flux; sensorless vector control system; slip frequency; torque control; Circuits; Control systems; Digital simulation; Frequency; Induction motors; Iron; Machine vector control; Rotors; Sensorless control; Torque control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics, Electrical Drives, Automation and Motion, 2006. SPEEDAM 2006. International Symposium on

Conference_Location

Taormina

Print_ISBN

1-4244-0193-3

Type

conf

DOI

10.1109/SPEEDAM.2006.1649912

Filename

1649912