Three-phase to K-phase power conversion using voltage fed quasi Z source direct matrix converter with maximum constant boost control technique

The given research article represents the voltage-fed quasi Z source direct matrix converter (QZSDMC) for three-phase to K-phase power conversion with the maximum constant boost control-modulation technique. To reduce the switching losses and to achieve high efficiency, a new PWM technique has been proposed. The technique controls both the rectifier side and inverter side of the matrix converter equivalent circuit. Compared with the ZSDMC, the voltage-fed QZSDMC has less effective components, is compact in size, and has higher efficiency and a wide range of controlled buck-boost operations. The proposed modulation technique provides lower harmonic contents in the output, poor switching current stresses, lower switching voltages and maximum voltage gain under the given modulation index. This paper discussed the relationship of the voltage gain to the modulation index and the relationship of the switching voltage stresses to the voltage gain have been analyzed. The proposed modulation technique was verified by simulation using MATLAB and also validated experimentally.