The over modulation strategy of matrix converter(MC) is put forward on the basis of conventional AC/DC/AC MC control theory. Firstly,imaginary AC/DC converter is over modulated to get the greatest fictitious DC voltag...The over modulation strategy of matrix converter(MC) is put forward on the basis of conventional AC/DC/AC MC control theory. Firstly,imaginary AC/DC converter is over modulated to get the greatest fictitious DC voltage,secondly,imaginary DC/AC converter is over modulated,which effectively improve the voltage transfer ratio. Two voltage transfer ratio is emphatically analyzed with Fourier transform. At last,different modulation method is simulated with MATLAB,the simulation results verified the theoretical analysis and validity of the over modulation strategy,which provide a theoretical basis for the further research.展开更多
基金Supported by education department of Hunan Province(No.03C462)
文摘The over modulation strategy of matrix converter(MC) is put forward on the basis of conventional AC/DC/AC MC control theory. Firstly,imaginary AC/DC converter is over modulated to get the greatest fictitious DC voltage,secondly,imaginary DC/AC converter is over modulated,which effectively improve the voltage transfer ratio. Two voltage transfer ratio is emphatically analyzed with Fourier transform. At last,different modulation method is simulated with MATLAB,the simulation results verified the theoretical analysis and validity of the over modulation strategy,which provide a theoretical basis for the further research.
