Grid Interface of Wind Energy by Using DCMLI

A simple control strategy for converter current control using diode clamped multilevel inverter (DCMLI) with level shifted carrier PWM modulation in the current control mode for real power injection as well as load compensation has been proposed for wind energy integration to grid . The converter current injected into a distribution system is controlled in accordance with the wind variation and load compensation is performed as an added facility in order to free the source current being fed from the grid at PCC to be free from harmonic distortion, unbalance and low power factor even though the load currents may be so. The results are validated using PSCAD/EMTDC simulation studies