Análise de viabilidade técnica para modernização de turbinas eólicas do tipo 01 para o tipo 04

Abstract

The increase in the share of renewable energies is notable, especially wind energy, with a growth of 0.62% in the Brazilian energy matrix from 1973 to 2015. Wind energy has been implemented since the 1980s, and the pioneers in their implementation they are already in the revitalization stage. Due to technological advances, some technologies are no longer advantageous or have become inefficient, as is the case with type 01 wind turbines characterized by the use of asynchronous induction generators with a squirrel cage rotor, which are directly connected to the electrical grid and that operate at fixed speed only. In this way, in a wide range of speed the generator is not being efficient, for this, a solution is the modernization of wind turbines of type 01 to wind turbines of type 04 (total converter), characterized by the use of a full load converter for connecting the generator to the mains. With this technique, it is possible, through a maximum power point tracking technique (MPPT) and a control system, to perform speed control, directly implying the capacity factor, which can be interpreted as a value that represents the health of the plant and its use in capturing the wind resource to transform it into electrical energy, and the generation of energy in a certain period of time. The present work intends to study the maximum power point tracking technique and to elaborate the curves with maximum power points of the type 01 turbine, for a wide range of speed, and to analyze the technical feasibility through the gain in the power capacity fator.