Influência de Cargas Residenciais no Perfil de Tensão-Frequência do Gerador de Indução na Conexão Fukami

Abstract

Due to the energy crisis in 2015 and its consequences, such as energy rationing and rising tariffs, consumers in various parts of the country have chosen to use portable generators such as for emergencies or isolated operation at peak times. However, the traditional solutions used, such as synchronous generation in diesel generator sets, have faced barriers due to the characteristics of the machines, which requires high acquisition costs and frequent maintenance, unlike asynchronous generation, whose value is approximately 50% of this, besides better characteristics due to the model of the rotor in squirrel cage. Therefore, a cheaper and more robust alternative that arises is the use of self-excited squirrel cage induction generators in the Fukami connection, which consists of capacitors connected to the stator windings in order to supply the reactive energy that the machine demands. In this way, voltage regulation, which in induction generators is poor, improves, and frequency becomes more controlled when feeding variable loads, which are common in residential environments.