Stator flux controlled V/f PWM inverter with identification of IM parameters [induction motors]

Author

Gastli, Adel ; Matsui, Nobuyuki

Author_Institution

Dept. of Electr. & Comput. Eng., Nagoya Inst. of Technol., Japan

Volume

39

Issue

4

fYear

1992

fDate

8/1/1992 12:00:00 AM

Firstpage

334

Lastpage

340

Abstract

A V/f PWM inverter control algorithm based on controlling the stator flux vector of an induction motor is presented. The algorithm permits an automatic boost of inverter voltage in such a way that the stator flux magnitude is kept constant. The voltage autoboost method is based on knowledge of the IM equivalent circuit parameters and given load characteristics. An offline auto measurement of the equivalent circuit parameters using a PWM inverter is described. The technique consists of performing the no-load and single-phase tests when the motor is connected to the inverter. The complete control system has been constructed and tested and the experimental results have been found satisfactory. The proposed method has achieved a considerable improvement of IM torque-speed characteristics under optimal slip frequency operation

Keywords

control system synthesis; equivalent circuits; induction motors; invertors; machine control; machine testing; machine theory; parameter estimation; pulse width modulation; stators; voltage control; PWM inverter; algorithm; control system synthesis; equivalent circuit; induction motors; load characteristics; machine control; machine testing; optimal slip frequency operation; parameter identification; stator flux vector; torque-speed characteristics; voltage autoboost method; voltage control; Automatic control; Circuit testing; Control systems; Equivalent circuits; Induction motors; Performance evaluation; Pulse width modulation inverters; Stators; System testing; Voltage;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/41.149751

Filename

149751