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Control system developed for hybrid wind diesel system (HWDS) operating as standalone power system is presented. The HWDS consists of a permanent magnet synchronous generator (PMSG) based wind turbine generation system and a diesel generation system (DGS) with synchronous machine. Control system developed for both machine side and load side power converter is simulated. A maximum power point tracking (MPPT) control system is developed and simulated for machine side power converter to track the optimum rotor shaft speed for achieving maximum power extraction through wind turbine. The transition from wind-diesel to wind-only mode of operation is simulated. A dynamic model of HWDS is developed to study the system operating behavior under standalone condition. The complete HWDS is modeled and simulated in MATLAB Simulink environment. Simulation results to validate the performance of developed control system are presented.

A control strategy developed for hybrid wind-diesel system (HWDS) is presented in this paper. The proposed system consists of the induction generator based wind turbine generation (WTG) system, IGBT based power electronics converters, diesel generator (DG) unit and dump load (DL) system. Developed control strategy shares the required power generation between the WTG and DG unit. The control system operates the wind turbine to achieve maximum power extraction using maximum power point tracking (MPPT) scheme, and simultaneously controls the dump load to absorb excessive power generation, in turn regulates the frequency of power supply. The DG unit is controlled for supplementing the generated power from WTG to supply the complete load power demand. The complete system is modeled and simulated using SimPowerSystems toolbox from Matlab-Simulink software package.