Innovative Reactive Power Saving in Wind-driven Grid-connected Induction Generators Using a Delta-Star Stator Winding: Part II, Estimation of Annual Wh and VARh of the Delta-Star Generator and Comparison with Alternative Schemes

Abstract

This paper considers constant-speed electricity generation using induction generators. Taking typical wind-farm site data, a case study allows performance evaluation of the previously proposed delta-star induction generator feeding power to the grid. By making an annual estimation of energy fed to the grid and reactive power drawn from the grid, advantages of this multi-stage generator are shown. A method for studying the effect of variation in wind speed pattern, on the annual reactive power drawn from the grid is indicated. A performance comparison with some other wind-driven constant-speed induction generator systems is also made.