Signal Processing for Active Power Filters

The paper describes special active power filter solution. There are given control algorithms and methods for the filter current regulation. Firstly, there is described power part structure of the filter with the resonant converter and general conception structure of the filter. Then there is description and calculations of the control algorithms and methods for the filter currents regulation. In the paper are given results of practical realization, which was, in this case, mainly orientated to control algorithm research. For this purpose was selected DSP TMS320F2812 and implemented to the control unit of the filter. Control unit was practically realized by use of development DSP kit. Sample of practically realized control unit was designed as universal control unit for power electronics applications. Reached results that are presented in the paper are simulation and practical realization results.