Stabilization procedures based on fuzzy inference algorithms for PWM drives

Author

Budzisz, Marek ; Nowacki, Zbigniew

Author_Institution

Inst. of Autom. Control, Tech. Univ. Lodz, Poland

Volume

2

fYear

1995

fDate

8-12 Oct 1995

Firstpage

1663

Abstract

The problem of instability areas of the general purpose drive system with PWM inverter and an induction motor was investigated. The first task of detection of instability (or excessive angular velocity oscillations with a poor damping factor) was solved in the drive system without velocity feedback and without velocity signal. The fuzzy inference based algorithm uses for processing only one signal from power circuit-inverter supply current signal, and two other signals from the control circuit of the inverter. It activates the adequate reference frequency correcting procedure. The improvement of stability is achieved only by the influence on the reference frequency signal

Keywords

PWM invertors; damping; feedback; fuzzy control; induction motor drives; inference mechanisms; machine control; oscillations; stability; velocity control; PWM drives; PWM inverter; adequate reference frequency correcting procedure; damping factor; excessive angular velocity oscillations; fuzzy inference algorithms; fuzzy inference based algorithm; induction motor; power circuit-inverter supply current signal; reference frequency signal; stabilization procedures; velocity feedback; velocity signal; Angular velocity; Circuits; Damping; Feedback; Frequency; Fuzzy control; Induction motors; Inference algorithms; Pulse width modulation inverters; Signal processing;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 1995. Thirtieth IAS Annual Meeting, IAS '95., Conference Record of the 1995 IEEE

Conference_Location

Orlando, FL

ISSN

0197-2618

Print_ISBN

0-7803-3008-0

Type

conf

DOI

10.1109/IAS.1995.530504

Filename

530504