Title :
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
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;
Conference_Titel :
Decision and Control, 2002, Proceedings of the 41st IEEE Conference on
Print_ISBN :
0-7803-7516-5
DOI :
10.1109/CDC.2002.1184206
