A novel approach of grid connected wind energy conversion system with modified maximum power point tracking

In this paper a new approach of maximum power point control algorithm (MPPT) using DC-DC Boost Converter for 1MW permanent magnet synchronous generator (PMSG) based variable speed wind energy conversion system (WECS) has been proposed which is integrated with grid using five-level active neutral points clamped (ANPC) inverter. In this work the instantaneous values of input side current and voltage of DC-DC boost converter are utilized for implementing the MPPT topology via the control of duty ratio. The Inverter side grid control of WECS keeps DC link voltage constant and controls the power flow injected into the grid. Here, five-level ANPC inverter has been used for grid integration which improves the quality of power injected into grid while reducing the cost of inverter topology in comparison to existing ones. The proposed work is verified by the simulation in MATLAB/Simulink environment.