Interleaved converter power factor correction method and apparatus
Patent 6690589 Issued on February 10, 2004. Estimated Expiration Date: 
February 28, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 28, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesForced load sharing circuit for inverter power supply Overvoltage protection for redundant power supplies Fault tolerant active current sharing Single wire current sharing control technique for the parallel/redundant operation of a plurality of PWM converters Patent #: 6346798 InventorsAssigneeApplicationNo. 10/085259 filed on 02/28/2002US Classes:363/72, Master-slave323/272Parallel connectedExaminersPrimary: Han, JessicaAttorney, Agent or FirmInternational ClassesH02M 3/158 (20060101)H02M 1/00 (20060101) H02M 3/04 (20060101) AbstractDisclosed is an apparatus that equally distributes current from a rectifier circuit to a plurality of power factor correction circuit units by equal current magnitudes and lower component count advantages of peak current sensing with the lower harmonic distortion advantages of average current sensing. The output of a single average current sensing correction circuit in a master controller is logically compared with the output of a peak current sensing circuit in each of a plurality of interleaved master and slave controller units to produce a difference signal used to operate the switch in the switch leg of each controller unit to reduce emi, harmonic distortion and increase power factor toward an in phase condition.Other References
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