A Modified Stationary Reference Frame-Based Predictive Current Control With Zero Steady-State Error for LCL Coupled Inverter-Based Distributed Generation Systems

Author

Ahmed, Khaled H. ; Massoud, A.M. ; Finney, S.J. ; Williams, B.W.

Author_Institution

Electr. Eng. Dept., Alexandria Univ., Alexandria, Egypt

Volume

58

Issue

4

fYear

2011

fDate

4/1/2011 12:00:00 AM

Firstpage

1359

Lastpage

1370

Abstract

This paper proposes a modified stationary reference frame-based predictive current controller with zero steady-state error for LCL coupled inverter-based distribution generation systems. Analytical expressions for the predictive current control error sources are investigated. The stability margin for the predictive current gain is derived. Online adaptive control for the grid voltage is embedded in the control system to eliminate steady-state real and reactive power errors. The grid voltage estimation expressions for sensorless operation are employed to enhance system robustness and performance. Finally, simulated and practical results verify the derived expressions and the proposed control system performance.

Keywords

adaptive control; distributed power generation; electric current control; invertors; power grids; predictive control; robust control; LCL coupled inverter; distributed generation systems; grid voltage estimation; online adaptive control; predictive current control; robustness; stability margin; zero steady-state error; Distributed generation (DG); grid-connected; inverter; predictive;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

Conference_Location

6/1/2010 12:00:00 AM

ISSN

0278-0046

Type

jour

DOI

10.1109/TIE.2010.2050414

Filename

5475276