The use of the dirichlet kernel in the control systems of active filters for industrial power line

Abstract

Optimization of power converter topologies for power factor converters, active filters, active rectifiers etc. requires dividing converter's output signal spectrum between several power modules. These include the need to harmonize the frequency and phase responses and to synchronize input and output signals of several filters that process the same signal on different frequency intervals, on the boundary of their bandwidth in real time. The transfer of well known solutions for the digital filter synthesis from the field of radio, audio and other signal processing to the control systems of power converters faces several challenges. The article discusses the construction of a digital filter using the Dirichlet kernel that eliminates these problems.