Patent ID: 6465990
Filing Date: 2002-10-15
Classification: G05F,H02M,Y02B

Abstract:
A power factor correction system for improving the power factor during transfer of power from an AC power source to a reactive time-varying or non-linear load comprising:a full-wave rectifier circuit operatively connected to said AC power source for transforming an AC power signal to a DC power signal; a reactive load; a first impedance capable of storing energy, said first impedance coupled to said rectifier circuit so as to receive energy; a second impedance capable of storing energy, said second impedance coupled to said first impedance and coupled to said load; a switch coupled at one end to said first impedance and said second impedance, said switch having an open and closed state, said closed state causing said first impedance and said second impedance to store energy, said open state causing said first impedance and said second impedance to discharge energy; and a control circuit for controlling said switch so that the input current waveform into said full-wave rectifier will approximate the voltage waveform into said full-wave rectifier input.