SPACE VECTOR MODULATION OF MULTILEVEL H-CASCADED CONVERTER

Abstract

In this paper, a new space vector modulation algorithm for multilevel inverter is advanced based on imaginary coordinate, by which the available vertexes calculation and time calcu-lation of vectors will be more simple than traditional method. Moreover, the corresponding se-lection method of vertex and vector is also developed. The additional control rules such as voltage balance, high dv/dt prevent, sub-harmonic elimination, etc. could be implemented easily with ,this method, so that the inverter performance could be improved.