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JPE, Vol. 19, No. 2, March 2019 
Control and Modulation of Three to Asymmetrical SixPhase Matrix Converters based on Space Vectors
Mohammed A. AlHitmi, Khaliqur Rahman, Atif Iqbal, and Nasser AlEmadi

Area 
High Power Converters 
Abstract 
This paper proposes the modulation and control of a threetosixphase matrix converter with an asymmetrical sixphase output. The matrix converter (MC) outputs consist of two sets of threephase spatially shifted by 300, where the two sets have two isolated neutrals. The space vector approach is considered for the modeling and subsequent modulation of the threetosix phase MC. The intelligent selection of voltage space vectors is made to synthesize the reference voltages and to obtain a sinusoidal output. The dwell times of selected voltage space vectors are adjusted in such a way that the effect of the second and the third auxiliary plane vectors (i.e., x1y1, and x2y2) are nullified. To achieve the maximum output voltage gain and to ensure that no reactive power is drawn from the utility supply, the input side power factor is maintained at unity. Nevertheless, the source side power factor is controllable. The modulation technique is implemented in dSPACE working in conjunction with a FPGA. Hardware results that validate the proposed control algorithm are discussed.

Keyword 
Asymmetrical,multiphase,Matrix converter,Modeling of converter,Space vector pulse width modulation 
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