Abstract
Now a days due to recent advances in Photovoltaic (PV) panels, the demand on solar energy is increasing. In order to commercialize & utilize solar energy properly we have connect it the grid. This paper deals with the design & simulation of two stage converter system for integrating PV panel with the grid. It consists of PV panel, boost dc- dc converter for stepping up the PV panel voltage, a VSI for converting dc to ac & finally the grid. For operating the PV panel at maximum power point, Incremental Conductance algorithm is used & the system also works under various changing environmental conditions. For controlling inverter output with respect to grid synchronous reference (dq) frame control is used. Three phase PLL is used to lock grid frequency & phase with respect to inverter output. A low pass LC filter is modeled to remove high frequency harmonics from the inverter output & transformer is used to provide galvanic isolation between inverter output & grid. All the simulations are carried out in Simulink environment of MATLAB
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