A Novel Voltage Stabilization Control Scheme for Stand-alone Wind Energy Conversion Systems

This paper proposes a novel low cost FACTS based voltage stabilization scheme for a stand-alone wind energy conversion systems using self excited squirrel-cage induction generator (SEIG) driven by a wind turbine and interfaced to electric load. The new control scheme is designed not only to ensure bus voltage stabilization, but also to improve energy utilization using a low-cost PWM-switched modulated power filter compensator (MPFC) driven by a tri-loop dynamic error driven error scaled regulator. Numerous validation cases were simulated under different load types and excursions including linearized, motorized and nonlinear type loads. The proposed FACTS scheme is simulated and satisfactory results are obtained showing the applicability of the scheme for supplying electricity to remote areas such as isolated villages, heating, water pumping, ventilation and air conditioning.