Passivity-based robust controller design for a variable speed wind energy conversion system

Authors

PENG WANG
HAISONG WANG
XU CAI
ZHENGZHI HAN

DOI

10.3906/elk-1309-206

Abstract

This paper proposes a design method for a robust controller to improve the stability and system dynamic behavior for variable speed wind energy conversion systems. By analyzing the mathematical model of a wind power conversion system, control strategies for both a generator-side converter and a grid-side converter are given. For the generator-side converter, the well-known maximum power point tracking method is employed, while for the grid-side converter, a robust controller is presented based on passivity theory. The $L_{2}$-gain performance is analyzed using linear matrix inequality. Moreover, in order to accelerate the dynamic response and reduce the DC link voltage fluctuations, the optimum equilibrium points of the system are designed based on the analysis of the dynamic equations of the DC link voltage. Finally, the proposed method is verified a by hardware-in-the-loop simulation.

Keywords

Wind energy conversion system, robust controller, $L_{2}$-gain, linear matrix inequality, dynamic response

First Page

558

Last Page

570

Recommended Citation

WANG, PENG; WANG, HAISONG; CAI, XU; and HAN, ZHENGZHI (2016) "Passivity-based robust controller design for a variable speed wind energy conversion system," Turkish Journal of Electrical Engineering and Computer Sciences: Vol. 24: No. 2, Article 16. https://doi.org/10.3906/elk-1309-206
Available at: https://journals.tubitak.gov.tr/elektrik/vol24/iss2/16