Power factor correction rectifier that operates efficiently over a range of input voltage conditions
First Claim
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1. A power factor correction (PFC) rectifier, comprising:
- a plurality of rectifying diodes;
a first converter coupled to an alternating current source (AC) having a cycle comprising a positive voltage period and a negative voltage period, the first converter having a first output capacitor; and
a second converter coupled to the alternating current source (AC), the second converter having a second output capacitor coupled in series with the first output capacitor,wherein at least one of the first or second converters comprises a buck converter, andwherein only one rectifying diode is in series along a current path of the AC source during the positive voltage period and only one rectifying diode is in series along a current path of the AC source during the negative voltage period.
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Abstract
A PFC rectifier comprises a first converter having a first output capacitor and a second converter having a second output capacitor. The first and second capacitors are coupled to each other to increase the output voltage of the PFC rectifier. For example the first or second output capacitors can be serially coupled to each other. At least one or both of the first or second converters comprise buck or buck-boost converters, including inverting or non-inverter buck converters. The first and second converters can also form a bi-directional ac-ac inverter.
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16 Claims
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1. A power factor correction (PFC) rectifier, comprising:
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a plurality of rectifying diodes; a first converter coupled to an alternating current source (AC) having a cycle comprising a positive voltage period and a negative voltage period, the first converter having a first output capacitor; and a second converter coupled to the alternating current source (AC), the second converter having a second output capacitor coupled in series with the first output capacitor, wherein at least one of the first or second converters comprises a buck converter, and wherein only one rectifying diode is in series along a current path of the AC source during the positive voltage period and only one rectifying diode is in series along a current path of the AC source during the negative voltage period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification