Simulation of a Fuzzy Control Applied to a Variable Speed Wind System Connected to the Electrical Network

Abstract

Wind energy is a renewable source that has grown in application and technological development. Moreover, the generation of electricity from these systems does not compromise the environment as traditional systems, such as hydraulic and thermal generation of electricity. Wind turbine is the main component of a wind generation system, it is responsible for capturing and converting wind energy into electricity. Due to the nonlinear behaviour of the wind, the development of a precise mathematical model of such systems is a complex and sometimes impractical task. However, Fuzzy Logic Controllers to controller this type of since once they do not need a mathematical model, differently from the classical techniques which needs a transfer functions of the controlled system. Therefore, this work analyses the performance of a Fuzzy controller, by using the Fuzzy Logic ToolboxTM available in MATLAB®, applied to a variable speed wind turbine with Permanent Magnetic Synchronous Generator (PMSG) connected to a power system. Also, the obtained results are compared to those provides for a Classical Proportional Controller. According to the obtained results, the fuzzy controller presented a smaller response time than the classic proportional controller and better controllability of the generated power.