Space vector PWM for three-to-five phase indirect matrix converters with d2-q2 vector elimination

A novel space vector PWM modulation scheme with d₂-q₂ vector elimination is proposed for the three-to-five phase indirect matrix converter. The possible states of the five phase inverter stage can be mapped into two vector spaces. The proposed modulation scheme is able to produce the desired reference voltages in the d₁-q₁ vector space while ensuring a zero vector in the d₂-q₂ vector space over a switching period. The commutation for the rectifier stage is performed under zero dc-link current to minimize switching losses. The maximum voltage transfer ratio of the three-to-five phase matrix converter is found to be 0.7886. Simulation results demonstrate that the harmonics generated by the d₂-q₂ vector space are low, which demonstrates d₂-q₂ vector elimination.