Pollution and far-away location of generation are the main disadvantages regarding bulk power generation from conventional power plants like gas plants, thermal and nuclear power plants. These constraints give scope to look for alternative energy sources reducing pollution and distance of location. Distributed generation (DG) is a viable option to generate power at distribution level without pollution and further reducing transmission line losses due to distance. Sending power from renewable energy sources needs an inverter to be integrated with grid. Inverter also performs the task of harmonic filtering in source components acting as active power filter. This paper presents integration of distributed generation from PV array to grid via an inverter controlled with DG controlled PQ theory. When power is fed from distributed generation, the source power from main grid to load will decrease and this variation is shown in results. MATLAB/Simulink software was used to develop the proposed model and the results are discussed for different cases. Results are presented for two cases where the source current is affected by the load without APF and variable active power to grid with the integration of DG along with APF.
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