Análise de um sistema de geração para turbinas eólicas de baixa potência.

Abstract

Since 2002, wind power generation has been taking place in the Brazilian energy matrix. This intensifies the diversity of application of the types of turbines for this generation of energy. Based on this diversity, the purpose of this paper is to identify and emulate a generator suitable for the availability and the wind profile of the city of Campina Grande, in the State of Paraíba. A mathematical model of the generation system for wind turbines was developed and this model was implemented to extract the maximum power from the turbine. Measurements were made to trace the characteristic wind speed curve to adapt the mathematical model developed to the city's wind profile. In this research, a variable speed generator, the PMSG - Permanent Magnetic Synchronous Generator, was used. The study brings more complexity by including mechanical and electrical modeling implemented in the PSIM software. The control of the wind generation system was made to connect a load to the small turbine and controllers of the Proportional- Integral (PI) type, sinusoidal modulation based on a triangular carrier signal and a rectifier circuit were used. The results are presented in order to verify the characteristics and behavior of the electrical and mechanical variables of the system