The SVPWM modulator with active voltage balancing control for 4-level FLC converter

This paper presents SVPWM modulation technique with active voltage balancing for three-phase four-level FLC converter. This modulation technique represents the alternative solution for drive applications with multilevel converters. The presented solution is developed for specialized control system based on combination of DSC and FPGA. Presented SVPWM modulator is implemented in FPGA. Solution was tested on low-voltage prototype of four-level flying capacitors converter. The main advantages and disadvantages which were found out during implementation and hardware tests are also described in this paper.