A HIGH EFFICIENCY AC-DC CONVERTER WITH POWER FACTOR CORRECTOR
An AC/DC power converter includes a pair of input terminals, a boost unit, a DC/DC converter, a coupler chain, and a discharge chain. The pair of input terminals connect to a pulsating DC source. The boost unit is coupled to the input terminals and generates a voltage higher than the voltage at the input terminals. The DC/DC converter couples to the boost unit and includes a set of series switches coupled to the primary side of a transformer through a series inductor and capacitor. The DC/DC converter further includes a secondary winding coupled to the transformer and coupled to a rectifier and filter configuration. The coupler chain couples the boost unit to the DC/DC converter. The discharge chain couples the coupler chain to the high voltage source generated by the boost unit. Control pulses synchronize the series switches so that a resonant current flows in the coupler chain and the discharge chain such that the switches can be turned on and off while voltages across the switches are substantially zero.
Inventor: Cheng, Shuo | Rao, Yuan
Priority Number: US8743577B2
IPC Current: G05F000302 | H02M000700 | H02M0007217 | H02M000768
US Class: 363127 | 327538 | 363059 | 363060 | 363061 | 363089
Assignee Applicant: University of Florida Research Foundation Inc.inesville
Title: Method and apparatus for high efficiency AC/DC conversion of low voltage input
Usefulness: Method and apparatus for high efficiency AC/DC conversion of low voltage input
Novelty: Alternating current to direct current converter (AC/DC) used for magnetic induction energy harvester system, flows current from first energy storage element to input AC voltage source and then to second energy storage element
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