Simulação de um sistema de emulação de aerogeradores

Abstract

The electricity is of fundamental importance in the industrial and socio-economic development of a country, therefore, the search for new energy sources has been leveraging the diversification and expansion of the global energy mix in order to meet the demand for this energy. Thus, the energy generated from the wind has been growing with the help of incentives made by government agencies and by the entrepreneurial vision of several companies that invest in this area with the aim of diversifying the energy matrix. However, there is still the need to increase investment in research and projects to increase the capacity of wind generation. The capture of wind energy provided is mainly carried out by means of wind turbines, where its physical characteristics, in addition to wind characteristics directly influence generation. Thus, it is not feasible to have in research laboratories, wind turbines of varying sizes and shapes to evaluate the wind power generation, thus requiring up a mechanism to emulate the wind turbine characteristics for a detailed study of this system. Thus, this work proposes the development of a wind turbine emulator, consisting of a direct current motor (DC) operating as a primary machine, and mechanically coupled to a synchronous generator of alternating current (AC), which will provide electricity generated for consumption. This system was modeled in Matlab/Simulink software, in order to represent the characteristics and behavior of the wind turbine. From this modeling, it was possible to control the torque/speed DC motor which acts as a primary machine, allowing to simulate different operating conditions by means of a time series synthesis of the winds and analyzing the aerodynamic coefficient beta (𝛽) , power coefficient (𝐶𝑃), speed ratio (𝜆), wind speed (𝑣𝑣) and power extracted by the turbine (𝑃𝑡). Thus, we perform an analysis from simulation based on the imposed operating conditions and the influence on wind generation, allowing to visualize the viability of the emulator.