Study and realization of an instrument FPGA based to implement curve-fitting algorithm (CFA)

An instrument based on FPGA technology able to determine in an only period and with a little number of samples the fundamental frequency of electrical net signal is been realized. The algorithm implemented on the instrument is a modified version of the well known Curve Fitting Algorithm (CFA) particularly suitable to determine Power Quality Parameters. A study of the uncertainty to evaluate the performances of the instruments is presented too.