Patent ID: 7450408

Claim:
An integrated converter having a three-phase power factor correction, comprising: a first power factor correction circuit comprising: a first bridge converter having a first half bridge with a first middle point connected to a first phase alternating current voltage, and a second half bridge with a second middle point connected to a second phase alternating current voltage, wherein the second half bridge is switched off while a polarity of the first phase AC voltage is the same as that of the second phase AC voltage; a first inductance set connected to the first bridge converter; and a first DC/DC converting device connected to the first inductance set; and a second power factor correction circuit comprising: a second bridge converter having a third half bridge with a third middle point connected to the second phase alternating current voltage and the second middle point of the second half bridge, and a fourth half bridge with a fourth middle point connected to a third phase alternating current voltage, wherein the third half bridge is switched off while the polarity of the second phase AC voltage is the same as that of the third phase AC voltage; a second inductance set connected to the second bridge converter; and a second DC/DC converting device connected to the second inductance set, wherein a three-phase AC voltage is formed by the first, second and third phase AC voltages, and the three-phase AC voltage is transformed to a DC output voltage by the first DC/DC converting device and the second DC/DC converting device.