Fixed-point adaptive filter architecture for the harmonics power line interference cancelling

This paper presents a dedicated architecture for Least Mean Square (LMS) adaptive filtering algorithm for the harmonics power line interference cancelling. The proposed structure was developed targeting operations on fixed point what leads to less complex design. The proposed architecture was described in VHDL, and the results indicate that it is able to cancel efficiently the interferences in the fundamental frequency, and its high order harmonics. This aspect shows the efficiency of our solution over previously proposed prominent solutions that only focus on the cancelling of the fundamental frequencies.