Abstract
The paper focuses on possibility of integrating different renewable energy sources (RES) and how the integrated system could be effectively utilized to supply power to remote and far-flung areas where grid connection is challenging and power demand is nominal. A detailed modeling of solar photovoltaic (SPV) system, a wind energy system (WES) and a micro hydro system (MHS) and their integration and eventual connection to a common AC bus feeding power to three-phase load is presented. Along with maximum power point tracking (MPPT) system, the SPV system has a DC-DC converter to obtain a regulated DC output. The voltage source inverter (VSI) performs DC-AC conversion, the AC output being smoothen by means of an LC filter. The WES consists offixed pitch angle and a variable speed wind turbine model which acts as prime mover to a capacitor excited asynchronous generator (CAG) meant for generating the rated voltage. Similarly the MHS is modeled with a CAG assuming a constant input power. The integrated system is modeled in Matlab Simulink environment and the simulated results are presented for different three-phase loads. The inferences are drawn and adequately explained.
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