Power factor improving circuit

Details Power factor improving circuit Power factor improving circuit

1998-03-05

2000-04-11

Han, Y. J.

Electric power conversion systems

Current conversion

Including an a.c.-d.c.-a.c. converter

363 40, H02M 545, H02M 112

Patent

active

060494727

ABSTRACT:
A power factor improving circuit for reducing a harmonic current component contained in an AC input current and for achieving an excellent power factor and efficiency in a circuit having a rectifier circuit, provided between a rectifier circuit and a half-bridge-type inverter, including a discharging diode and a smoothing capacitor connected in series to each other and in parallel between output terminals of the rectifier circuit, a charging half-bridge rectifier connected to the smoothing capacitor, and a high-frequency capacitor and high-frequency inductor connected in series to each other and between an input terminal of the charging half-bridge rectifier and a connecting point of two transistors of the half-bridge-type inverter.

REFERENCES:
patent: 5343378 (1994-08-01), Tohya
patent: 5541829 (1996-07-01), Maehara et al.
patent: 5825639 (1998-10-01), Wagoner

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