Robust repetitive control of grid-connected DC-AC converters

Author

Zhong, Qing-Chang ; Green, Tim ; Liang, Jun ; Weiss, George

Author_Institution

Dept. of Electr. & Electron. Eng., Imperial Coll. of Sci., Technol. & Med., London, UK

Volume

3

fYear

2002

fDate

10-13 Dec. 2002

Firstpage

2468

Abstract

The paper proposes a possible circuit topology and voltage controller design for connecting a DC-AC converter to the power grid. This converter is meant to operate in conjunction with a small power generating unit. The design of the output voltage controller is based on H^∞ and repetitive control. This leads to a very low harmonic distortion of the output voltage, even in the presence of nonlinear loads and/or a distorted grid voltage. The output voltage controller contains an infinite-dimensional internal model, which enables it to reject all periodic disturbances which have the same period as the grid voltage and whose frequency components up to approximately 1.5 kHz are considered.

Keywords

DC-AC power convertors; H^∞ control; control system synthesis; robust control; voltage control; voltage regulators; 0 to 1.5 kHz; H^∞ control; circuit topology; grid-connected DC-AC converters; infinite-dimensional internal model; output voltage controller; periodic disturbances rejection; power grid; robust repetitive control; small power generating unit; very low harmonic distortion; voltage controller design; Circuit topology; DC generators; Electric variables control; Frequency conversion; Harmonic distortion; Joining processes; Power generation; Power grids; Robust control; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Decision and Control, 2002, Proceedings of the 41st IEEE Conference on

ISSN

0191-2216

Print_ISBN

0-7803-7516-5

Type

conf

DOI

10.1109/CDC.2002.1184206

Filename

1184206