Controle de potência reativa em um gerador de indução duplamente alimentado utilizando a técnica de controle vetorial por orientação do fluxo de estator

Abstract

The generation of electricity through wind power emerges as one of the possible solutions to meet the growing demand for electricity in the country. Besides the construction of new power plants, it is necessary to improve the efficiency of those who are already in operation, with the aim of mitigating energy losses and hence economic losses. In this sense, this paper proposes to analyze the control of reactive power double-fed induction generator (DFIG), type of equipment and topology that are used in wind turbines. Initially, it is made a contextualization and the theoretical background is given. Finally, simulations of different situations and presentation of results are performed. For accomplishing the power factor control, it is used the control strategy of field oriented control of stator flux. This technique enables the decoupling of active and reactive power of the machine. The simulation environment chosen was the toolbox Simulink® of Matlab and the controller used for this activity was a PI.