[[abstract]]This paper demonstrates a fuzzy sliding mode control (FSMC) scheme for a static reactive power (VAR) compensator (SVC) to improve the damping of a synchronous generator. A robust sliding regime is derived to guarantee the stability of the FSMC with parameter uncertainties. Two types of FSMC-fuzzy switching gain compensation and fuzzy control signal compensation, are recommended to regulate the reactive power of the SVC. A synchronous generator system with the proposed FSMC-SVC has been studied and its dynamic responses are simulated. And the results show that the suggested FSMC possesses the advantages of fuzzy control and sliding mode control, e.g., insensitivity to parameter variations and load disturbances. The dynamic performance of the synchronous machine system can be improved dramatically over a wide range of operating condition. In these control schemes, the reducing switches control are adopted for simplification
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