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A Study of the Method of Increasing Matrix Converter Voltage Transfer Ratio

YUE Zhou,CHENG Yun(Department of Communication and Control Engineering,Hunan Institute of Humanities and Science and Technology,Loudi 417001,China)  
One of the most important reason which restricting engineering application is that matrix converter voltage transfer ratio can not be greater than 0.866.Therefore,to improve the voltage transfer ratio method has important practical significance.There are three effective methods to improve the matrix converter voltage transfer ratio.They are harmonic injection method and a new topology.The feasibility and effectiveness of two methods are proving from analyzing their basic principles,comparing their characteristics and Simulation study.The simulation results show that the first method can increase the voltage transfer ratio to 1.0 or so,but the output voltage of the harmonic content is increased accordingly;the second method of the voltage transfer ratio can reach or exceed 1.0,and the output voltage of the harmonic content is small,The comparative research of the two methods can provide some reference for project application.
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