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Dynamic compensation observer-based sliding mode stabilizer design for wind turbine generator
Author(s)
Date Issued
December 1, 2006
Type
Article
Abstract
This paper focuses on a design of power system stabilizer based on a sliding mode control for dynamic stability enhancement of a wind turbine generator supplying an infinite bus. It is well known that the sliding mode controller is established by a feedback of all state variables. Thus, it is not easy to implement in practical systems. Moreover, the difficulty of switching gain setting in a hyperplane design is an inevitable problem. To circumvent these problems, the dynamic compensation observer technique is applied. The salient feature of this technique is that only output information of the system can be used as a feedback signal of a controller. In addition, this technique provides a systematic approach to design a switching hyperplane based on designer's specifications, a robustness against system parameter variations as well as various loading conditions, and an enhancement of system dynamic performance against disturbances. Simulation studies show that the effectiveness of the proposed controller is superior to that of the variable structure controller proposed in the previous work. It is not only able to damp power system oscillations due to random wind gust disturbances, but also very robust against various loading conditions and variations of system parameters.
Citation
Wseas Transactions on Systems, 5(12), 2751-2758, 2006