Abstract: A method and system for synchronizing an input signal for a power system. The method comprises: extracting from the input signal, three substantially equidistant samples from a fundamental component of the input signal; determining a frequency (f1), an amplitude (A1), and a phase-difference (?Diff) of the input signal from the three equidistant samples and a tracking signal corresponding to a steady-state of the fundamental component of the input signal characterized by a frequency (fTS) and an amplitude (ATS) with a phase-difference that is the phase angle between the tracking signal and the input signal; and generating and outputting a frequency, amplitude, and phase-difference signals corresponding to the determined frequency (f1), amplitude (A1), and phase-difference (?Diff) of the input signal to one or more components of the power system.