A carrier-based PWM scheme for maximizing the voltage transfer ratio of five-phase to three-phase matrix converter

This paper presents a scheme using carrier-based PWM to control the five-to three-phase matrix converter ( MC). This scheme is based on the equivalent indirect converter model, which models the converter as two independent stages to perform rectification and inversion processes. It presents a comprehensive solution for linear modulation (LM) and over-modulation (OM) operations. The OM operating region is classified into three different regions based on the choice of the rectifier and inverter stages switching functions. These regions of operation are rectifier-side OM (RSO), inverter-side OM (ISO) and both sides OM (BSO). With these schemes, maximum voltage transfer ratio (VTR) of this converter reaches 1.05 in the LM and 1.19 in BSO mode. These values are the maximum possible VTR that can be achieved in MC. The proposed technique has been implemented using a laboratory setup. Simulation and measured results showed the validity of the given analysis.