An economic microwind-generation scheme using single-winding induction machine

This paper presents an economic single-phase, microwind-generation scheme at low wind speeds mainly for grid-isolated, domestic applications. The generation scheme employs a single-phase induction machine to operate as an induction generator using only one stator winding with higher number of poles. Besides fixed capacitors, a closed loop excitation current control scheme for the single winding is provided through a dedicated inverter assisted from a photovoltaic source. A transformer is used to step up the voltage generated at the winding terminals. The scheme shows excellent performance providing constant voltage output with changing loads when simulated and practically experimented with a practical 200W, 230V, 12-pole machine.