Patent ID: 7787575

Claim:
A method for use in a synchronization system having a processor operably connected to a memory for synchronizing an input signal for a power system, comprising: extracting from the input signal received from the power system, three substantially equidistant samples from a fundamental component of the input signal, the three substantially equidistant samples being taken substantially 120 degrees apart during steady-state operation; determining a frequency (f 1 ), an amplitude (A 1 ), and a phase-difference (Φ 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 (f TS ) and an amplitude (A TS ) with a phase-difference that is the phase angle between the tracking signal and the input signal; generating and outputting frequency, amplitude, and phase-difference signals corresponding to the determined frequency (f 1 ), amplitude (A 1 ), and phase-difference (Φ Diff ) of the input signal to one or more components of the power system, adjusting the tracking signal to match the determined frequency (f 1 ), amplitude (A 1 ), and phase-difference (Φ Diff ) of the input signal; and generating a synchronization signal from the determined frequency (f 1 ) for output to the one or more components of the power system.