Multilevel active rectifier with independent phase control

This paper introduces the control algorithm designed for the three-phase voltage-source active rectifier multilevel converter. The presented control strategy allows direct current control separately for each phase, that´s important during non-symmetrical converter load. The control provides voltage balancing on individual power cells directly at the control structure level. The behavior of designed control is analyzed by simulations tests. The experiment is made on low-voltage laboratory prototype of single-phase part of converter.