A new structure for three-phase to single-phase AC/AC matrix converters

As the size and the cost of power semiconductor switches are decreasing, converter topologies with high device count are starting to draw more attention. One such type of converters is Matrix Converters. This paper proposes a new structure for three-phase to single-phase AC/AC matrix converters. The control strategy for this new kind of matrix converters is based on the minimum error between the measured and the forecasted output voltages. By this new structure the output voltages have no limitation on the output frequency; and the amplitude as well as the harmonic content of the output voltage is significantly less than the other classical kind of the matrix converters. The most important and valuable characteristic of this new algorithm and new structure is that even under unbalanced and significantly distorted input voltage waveforms, the output waveforms turn out to be reasonably clean and balanced.