Multi-phase voltage source inverter driven multi-star induction machine

In this paper, a strategy of the space vector control pulse and a sinusoidal pulse width modulation for the multi-stars induction machine were discussed. The n sets of three-phase windings are phase shifted spatially by 30° electrical degrees are used. The proposed strategy, which uses space vector pulse width modulation is based on the vector space decomposition control to limit the harmonic currents and also use the sinusoidal pulse width modulation strategy for the same aim but this method generates more harmonic distortion THD of currents than the space vector pulse width modulation. Moreover, when the number of stars increases, this strategy shows us less harmonic distortion currents. The vector space decomposition and transformation matrix is also an important topic which is also used for the multi-stars motor and the influence of offsets even the number of stars using the space vector pulse width modulation control technique of the torque ripple.