Proposta de um sistema discreto de controle de velocidade de um gerador de indução operando em paralelo com um gerador síncrono para se evitar aumento de frequência do sistema no caso de suprimento de cargas reduzidas

Abstract

In the case of parallel operation of a synchronous generator with an asynchronous induction generator, the synchronous generator can be motorized, when the active power supplied by the induction generator is greater than the power absorbed by the load fed by the two generators in parallel. In this case, there is an alternative in order to avoid this occurrence, which is the decrease of the speed of the asynchronous generator, for the purpose of decreasing its active power supplying. This dissertation describes a proposal of a discrete speed control system for the induction machine that contemplates this solution. A data acquisition electronic board and a microcomputer are used to enable the implementation of the referred proposed speed control system, in which harmonics are not generated, because there are no static converters using semiconductors connected at the terminals of the machines, a favorable aspect related to the quality of the electrical energy.