US 2011/0032738 A1 · SYSTEM AND METHOD FOR POWER FACTOR CORRECTION

Abstract

A first rectifier diode is electrically connected between a first input terminal where an alternating current (AC) power is received and a first output terminal where a direct current (DC) power is output. A second rectifier diode is electrically connected between the first input terminal and a second output terminal. The first and second rectifier diodes rectify first and second portions of the AC power into the DC power, respectively. When switching of a plurality of power factor correction (PFC) switches is enabled, the plurality of PFC switches increases a voltage of the DC power to greater than a peak voltage of the AC power. An inductor is electrically connected between a second input terminal and two of the plurality of PFC switches. When the switching is disabled, first and second bypass diodes provide a current path past the plurality of PFC switches and the inductor.

Claims20

Dependent claims

A power factor correction (PFC) system comprising:

a first rectifier diode electrically connected between a first input terminal where an alternating current (AC) power is received and a first output terminal where a direct current (DC) power is output, the first rectifier diode rectifying a first portion of the AC power into the DC power;
a second rectifier diode electrically connected between the first input terminal and a second output terminal, the second rectifier diode rectifying a second portion of the AC power into the DC power, a voltage of the DC power being measurable across the first and second output terminals;
a plurality of PFC switches;
an inductor electrically connected between a second input terminal and two of the plurality of PFC switches;
and
first and second bypass diodes that, when switching of the PFC switches is disabled, provide a current path past the plurality of PFC switches and the inductor.

3 more elements

Dependencies are inferred from the claim text.

System and method for power factor correction

Life of this patent

System and method for power factor correction

Life of this patent

Abstract

Claims20