Adaptive current reference generator for active power filters

The electricity distribution networks are increasingly characterized by the presence of non-linear power electronic devices and power plant equipment capable to create problems of harmonic pollution. However, to have the best performance of attenuation of the harmonics introduced by various non-linear loads it is common to use an Active Power Filter (APF). In this thesis is presented the analysis of one of these filters and the development of possible improvements. I realized a Matlab code that could reproduce the operation of the filter and tested its efficiency. Subsequently the goal was to learn and explain why the original algorithm, in addition to filtering the harmonics present in the input signal, introduced new harmonics. The second goal was to analyze a possible simplification of the filtering algorithm, reducing the number of algebraic multiplications, so that it can be implemented effectively on Field Programmable Gate Arrays (FPGAs)