A novel PMSG based WECS for grid integration using DMC

Abstract

In this paper, direct matrix converter (DMC) based wind energy systems equipped with Permanent Magnet Synchronous Generators (PMSG) is proposed. To extract the maximum available power from the wind, the Matrix Converter (MC) is controlled using the venturini based algorithm together with the voltage oriented vector control (VOC) scheme to regulate active and reactive power (Power Regulation Technique). In this scheme, the maximum extractable power is derived from wind turbine power curves by using Maximum Power Point Tracking (MPPT) is set as reference active power while reference for reactive power is taken as zero. The change in generated power due to change in wind speed are processed through proportional & integral (PI) controllers to regulate the voltage gain of Matrix Converter (MC). In result, the desired regulation of powers is carried out. To evaluate the performances of proposed scheme, Matlab/Simulink based model is tested under varying wind speed. From the simulation results it is confirm that MC with adequate input filters and proposed control scheme is able to extract the maximum power from the wind energy conversion system (WECS) and fed directly to the existing grid at desired output frequency and voltage at nearly unitary input power factor.