This paper presents a method of calculation of steady-state processes in threephases matrix-reactance frequency converters (MRFC's), in which voltages and currents are transformed by control signals with two pulsations. A solution of nonstationary differentia equations with periodic coefficients that describe this system is obtained by using Galerkin's method and an extension of equations of one variable of time to equations of two variables of time. The results of calculations are presented in an example of three-phases MRFC with buck-boost topology and compared with a numerical metod embedded in the program Mathematica.

JO - Archives of Electrical Engineering L1 - http://www.journals.pan.pl/Content/84681/PDF/06_paper.pdf L2 - http://www.journals.pan.pl/Content/84681 IS - No 3 September EP - 371 KW - matrix-reactance frequency converter KW - non-stationary periodic differential KW - Galerkin's method KW - extension of differential equations ER - A1 - Korotyeyev, Igor Ye. A1 - ZiÄ™ba, Beata PB - Polish Academy of Sciences VL - vol. 61 JF - Archives of Electrical Engineering SP - 359 T1 - Analysis of three-phases matrix reactance frequency converter with two pulsations of control signal UR - http://www.journals.pan.pl/dlibra/docmetadata?id=84681 DOI - 10.2478/v10171-012-0029-8