Fuzzy control of a closed-loop regulated PWM inverter under large load variations

Author

Tzou, Ying-Yu ; Ho, Lien-Hsun ; Ou, Rong-Shyang

Author_Institution

Power Electron. & Motion Control Lab., Nat. Chiao Tung Univ., Hsinchu, Taiwan

fYear

1993

fDate

15-19 Nov 1993

Firstpage

267

Abstract

This paper proposes a fuzzy control scheme for the closed-loop regulation of a PWM inverter applied to high-performance AC voltage regulators (AVR) and uninterruptible power supplies (UPS). According to the observed and simulated dynamic behaviors of an AC power source under various load conditions, an innovative fuzzy control scheme is proposed. The PWM pattern is determined at every sampling instant by a decision table which is defined by the fuzzy control rules. To verify the proposed fuzzy control scheme, a DSP-based (TMS320C14) fuzzy controller with sampling rate of 4 KHz has been implemented. The constructed DSP-based fully digital-controlled PWM inverter system has fast dynamic response and low total harmonic distortion for phase-controlled nonlinear load

Keywords

closed loop systems; digital control; digital signal processing chips; fuzzy control; invertors; machine control; power engineering computing; pulse width modulation; uninterruptible power supplies; voltage regulators; DSP-based fuzzy controller; TMS320C14; closed-loop regulated PWM inverter; dynamic behaviors; fast dynamic response; fuzzy control; high-performance AC voltage regulators; innovative fuzzy control scheme; large load variations; low total harmonic distortion; phase-controlled nonlinear load; sampling rate; uninterruptible power supplies; Active filters; Application software; Control engineering; Control systems; Digital control; Fuzzy control; Load management; Pulse width modulation inverters; Sliding mode control; Uninterruptible power systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, Control, and Instrumentation, 1993. Proceedings of the IECON '93., International Conference on

Conference_Location

Maui, HI

Print_ISBN

0-7803-0891-3

Type

conf

DOI

10.1109/IECON.1993.339069

Filename

339069