Rotor Resistance Control of a Wound Induction Generator for wind Turbine with Blade Actuator

Abstract

Currently, wind energy occupies an important position in the world, which leads to a significant increase in the demand for wind turbines. Inexpensive power converters of energy, fast microprocessors, and automatic control of technological processes have made it possible to produce a high-tech wind turbine that can work efficiently in the power system, as well as in isolated remote areas. This article discusses the use of a wind turbine with an asynchronous generator, which has improved the performance of the turbine through mathematical modeling and confirmation of the results by experimental work. Also, a method has been developed to control the rotational speed of a generator with a wound rotor, based on the additional resistance in the rotor circuit and using a voltage rectifier and a chopper. The torque-speed characteristics of the induction generator were obtained for different rotor resistance values and similarly, characteristics of a turbine with a power of 1500 watts were obtained by pitch angle control.