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Energies 2014, 7(3), 1750-1769; doi:10.3390/en7031750

H Fault Tolerant Control of WECS Based on the PWA Model

Key Lab of Field Bus and Automation of Beijing, North China University of Technology, Beijing 100144, China
Author to whom correspondence should be addressed.
Received: 26 January 2014 / Revised: 13 March 2014 / Accepted: 19 March 2014 / Published: 24 March 2014
(This article belongs to the Special Issue Wind Turbines 2014)
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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. View Full-Text
Keywords: H∞ fault tolerant control; piecewise affine; wind energy conversion system; H∞ robust control H∞ fault tolerant control; piecewise affine; wind energy conversion system; H∞ robust control

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Shi, Y.-T.; Kou, Q.; Sun, D.-H.; Li, Z.-X.; Qiao, S.-J.; Hou, Y.-J. H Fault Tolerant Control of WECS Based on the PWA Model. Energies 2014, 7, 1750-1769.

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