A fault ride through strategy for wind energy conversion system based on permanent magnet synchronous generator

Wind energy is one of the most distinguished renewable sources of energy. Wind energy conversion system (WECS) is based on a variable speed wind turbine with direct driven permanent magnet synchronous generator (PMSG). It transmits its electrical power to an AC electric grid using advanced power electronic converter system. The PMSG is coupled to the grid by means of a fully controlled back-to-back converter with a voltage source inverter (VSI) and an intermediate DC-link circuit. The modelling and operation of a grid-connected wind generation system based on a gearless PMSG have been considered. The effect of the symmetrical fault on the operation without and with overvoltage protection circuit as fault ride through (FRT) method has been studied. The modelling of wind power generation system with PMSG and power electronic converter interface along with the control scheme is implemented using a MATLAB/SIMULINK simulation package.