A current-sharing control strategy for paralleled multi-inverter systems using microprocessor-based robust control

Author

Chen, Y.K. ; Wu, T.-F. ; Wu, Y.-E. ; Ku, C.-P.

Author_Institution

Dept. of Electr. Eng., Chien Kuo Inst. of Technol., Chang-Hua, Taiwan

Volume

2

fYear

2001

fDate

2001

Firstpage

647

Abstract

A current-sharing control strategy for paralleled multi-inverter systems using microprocessor-based robust control is presented in this paper. With an averaged current-sharing control (ACSC) strategy, the inverters are in parallel connection and each inverter has a voltage robust controller to achieve system stability and robustness, and a current robust controller to track the averaged inductor current of the inverters to achieve an equal current distribution. Simulation results and hardware measurements of a single-inverter system and a two-inverter system, and simulation results of a three-inverter system with linear and nonlinear loads have demonstrated the feasibility of the proposed control scheme in equal current distribution and fast regulation

Keywords

PWM invertors; electric current control; microcomputer applications; robust control; voltage control; SPWM inverters; averaged current-sharing control; averaged inductor current tracking; current robust controller; current-sharing control; equal current distribution; hardware measurements; linear loads; microprocessor-based robust control; nonlinear loads; paralleled multi-inverter systems; single-inverter system; sinusoidal pulse width modulated inverters; system stability; two-inverter system; voltage robust controller; Control systems; Current distribution; Current measurement; Hardware; Inductors; Inverters; Nonlinear control systems; Robust control; Robust stability; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

TENCON 2001. Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology

Print_ISBN

0-7803-7101-1

Type

conf

DOI

10.1109/TENCON.2001.949673

Filename

949673