SPACE VECTOR MODULATION STRATEGY OF TWO-STAGE MATRIX CONVERTER WITH 18 SWITCHES AND IT’S SIMULATION STUDY

This paper analyzed the topology evolution from conventional matrix converter(CMC) to two-stage matrix converter(TSMC) and verified that they have the same switching functions and transform function. However, the space vector modulation for TSMC is different from that CMC adopted for their different topologies. This paper analyzed some typical circuits of TSMC, analyzed and deduced the space vector modulation strategy of each stage of TSMC with 18 switches, and given the switching vector sequence for zero current commutation. The modulation stratgy is simulated by MATLAB , The simulation results demonstrated that TSMC has the same excellent input/output performance as CMC, and verified the validity of theoretical analysis and modulation strategy presented in this paper , which provide a theoretical basis for the next research and software / hardware design of TSMC .