Abstract
This paper focuses on reactive power management as well as stability enhancement in a standalone hybrid power system (SHPS) with a proposed back stepping sliding mode controller based STATCOM. A comprehensive dynamic model of the standalone hybrid power system(SHPS) having a combination of wind turbine generator, diesel engine backup and storage device is represented with its control scheme. Detailed model of the DFIG based wind energy conversion system (WECS) has been proposed for the SHPS and is experimentally analyzed through dSPACE DS1104 for transient stability improvement with variable load dynamics. At the beginning a sliding mode controlling approach has been implemented for the non linear standalone power system and later a back stepping sliding mode controller (BSSMC) approach is initiated for both rotor and grid side converters. Further studies regarding voltage stability have been implemented with Eigen value, bode and nyquist analysis.
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