A novel general space vector modulation algorithm for multilevel inverter based on imaginary coordination

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 calculation of vectors will be more simple than traditional method. Moreover, the corresponding selection 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. The primary simulation and experience result are in good agreement.