Method of switching-discontinuous and modulation functions in the analysis of processes in frequency converters

Abstract: The switching function method in the analysis of steady-state processes in frequency converters with an intermediate DC link based on an active rectifier and an autonomous voltage inverter with pulse-width modulation is considered. Expressions describing the formation of linear and phase voltages, as well as rectified DC link voltage in the basis of commutation functions are obtained. With the help of modulation functions, the correlation of the load current with the network currents is established.

Keywords: switching-discontinuous function, modulation function, frequency converter, active rectifier, dc link, autonomous inverter

For citation:
Kobzev A. V., Mihalchenko G. Ya., Mihalchenko S. G., Mulikov D. S. Method of switching-discontinuous and modulation functions in the analysis of processes in frequency converters. Doklady Tomskogo gosudarstvennogo universiteta sistem upravleniya i radioelektroniki, 2017, vol. 20, no. 3, pp. 203–209. DOI: 10.21293/1818-0442-2017-20-3-203-209