Modelagem e acionamento de uma máquina de indução dodecafásica com injeção harmônica para ganho de conjugado eletromagnético

Abstract

The electromagnetic torque can be increased, with significant gain, through the harmonic injection technique. With this procedure, it is possible we use a induction machine with a

number of stator phases more than, reducing their dimensions when compared with the three- phase machines, widely used today and easily found on the market. By using multiphase

machines we were able to obtain larger conjugates to meet heavier loads, improving the efficiency of certain electromechanical systems, thus taking up less space and increasing the reliability. The present work proposes a mathematical modeling for a twelve-phase induction machine with cage rotor, considering the spatial flow harmonics and the harmonic injection analysis in time. It is presented that using from the fundamental component up to the eleventh harmonic it is possible to produce dc torque, improving the mechanical torque density of a drive system. It is presented the dynamic model of the machine, the steady state analysis and the set of experimental results.