Improved Design of a Dual Stator Winding Induction Generator for Wind Power Applications

In this paper, an optimized design of a dual stator winding induction generator (DSWIG) with standard squirrel cage rotor is proposed for wind turbine applications. Since the produced energy from the renewable energy usually is rather expensive thus, the efficiency criterion is suggested as the objective function. For a certain power, the DSWIG has a bigger core compared to the equivalent single-winding induction machine. In addition, the control winding frequency is three times bigger than power winding frequency. Therefore, the core losses minimization plays a significant role in machine efficiency improvement. In first step, the optimal parameter values are designed, and then the desired generator is evaluated through the finite-element method supported by Ansys Maxwell software.The obtained results verify a significant efficiency-optimized design of dual stator winding induction generator compared to conventional design.