Massive Inrush Current limitation by Thyristor Based Soft- starter In Wind Mill Poly Phase Induction Generator During Connection with Grid

Abstract—The proposed Thysristor based soft starter using will be simulating in PSCAD on a three-phase induction generator for limitation of Massive inrush current which is 34 times more than the generator current & cause Massive Mechanical stress on coupling, bearing gear & shaft of wind mill poly phase generator during connection with Grid. Experimental results shown a significant reduction in high inrush current and smooth connection of the three phase induction generator to the grid with small impact on the power quality. This work presents a power resistors based soft starter strategy for a small induction-generator based wind turbine. Soft-starter is designed to reduce inrush current or surge in current while achieving a proper synchronism between the generator and the grid. The designed soft-starter successfully limits the high inrush current during the connection of the wind-turbine system to the grid.