The SVPWM modulation technique with active voltage balancing control for 3-level ANPC inverter

This paper presents advanced modulation technique for three-phase three-level ANPC inverter for drive applications. The Design of the converter allows actively balance the losses in the converter which results in higher power density, increase of reliability and lifetime of the converter. The control algorithm has to be able to secure the voltage control with proper capacitor voltage balancing as well as the active balancing of the losses in the converter. The proposed control is verified by experiments carried out on down-scale drive prototype of rated power 35kVA.