H ? Fault Tolerant Control of WECS Based on the PWA Model

Yun-Tao Shi, Qi Kou, Sun De-Hui, Zheng-Xi Li, Shu-Juan Qiao and Yan-Jiao Hou
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Yun-Tao Shi: Key Lab of Field Bus and Automation of Beijing, North China University of Technology, Beijing 100144, China
Qi Kou: Key Lab of Field Bus and Automation of Beijing, North China University of Technology, Beijing 100144, China
Sun De-Hui: Key Lab of Field Bus and Automation of Beijing, North China University of Technology, Beijing 100144, China
Zheng-Xi Li: Key Lab of Field Bus and Automation of Beijing, North China University of Technology, Beijing 100144, China
Shu-Juan Qiao: Key Lab of Field Bus and Automation of Beijing, North China University of Technology, Beijing 100144, China
Yan-Jiao Hou: Key Lab of Field Bus and Automation of Beijing, North China University of Technology, Beijing 100144, China

Energies, 2014, vol. 7, issue 3, 1-20

Abstract: The main contribution of this paper is the development of H ? fault tolerant control for a wind energy conversion system (WECS) based on the stochastic piecewise affine (PWA) model. In this paper the normal and fault stochastic PWA models for WECS including multiple working points at different wind speeds are established. A reliable piecewise linear quadratic regulator state feedback is designed for the fault tolerant actuator and sensor. A sufficient condition for the existence of the passive fault tolerant controller is derived based on some linear matrix inequalities (LMIs). It is shown that the H ? fault tolerant controller of WECS can control the wind turbine exposed to multiple simultaneous sensor faults or actuator faults; that is, the reliability of wind turbines can be improved.

Keywords: H ? fault tolerant control; piecewise affine; wind energy conversion system; H ? robust control (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2014
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