Analysis and control of SEIG-based wind energy conversion system supplying low voltage dc microgrid

A wind energy conversion system (WECS) consists of self-excited induction generator (SEIG) and a current source pulse width modulation (CS-PWM) rectifier combined with a suitable control method is developed for supplying a low voltage dc microgrid. The proposed PWM control method operates the CS-PWM rectifier not only to extract the maximum power (MP) from the wind, but also maintain unity power factor and less line current harmonic distortion at the rectifier input terminals. The simulation model of the proposed system is formulated using Simulink toolbox available in Matlab, with a 4-pole, 400V, 3-phase asynchronous machine of 2.2 kW and a dc microgrid of 220 V. The successful working of the proposed WECS is validated by carrying out the performance analysis under both steady-state and dynamic-state.