Power supply apparatus and methods with power-factor correcting bypass mode
November 1, 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 ReferencesCurrent controlled two-state modulation Uninterruptible power supplies Uninterruptible power supply Frequency-stabilized two-state modulation using hysteresis control Uninterruptible power supply Uninterruptible power system Failure-free power source device Apparatus and methods for generating uninterruptible AC power signals Power quality and demand management module Multi-function electric power conversion system InventorAssigneeApplicationNo. 10286027 filed on 11/01/2002US Classes:363/37, By semiconductor rectifier and inverter363/34Including an A.C.-D.C.-A.C. converterExaminersPrimary: Patel, Rajnikant B.Attorney, Agent or FirmInternational ClassesH02M005/458H02M005/40 AbstractA power supply apparatus, such as an uninterruptible power supply, includes an AC input configured to be coupled to an AC power source and an AC output. The apparatus also includes an AC/DC converter circuit, e.g., a boost rectifier circuit, with an input coupled to the AC input. The apparatus further includes a DC/AC converter circuit, e.g., an inverter circuit, configured to be coupled between an output of the AC/DC converter circuit and the AC output. A bypass circuit is operative to establish a coupling between the AC input to the AC output in a first (e.g., bypassed) state and to interrupt the coupling in a second (e.g., “on line”) state. The AC/DC converter circuit is operative to control current at the AC input when the bypass circuit is in the first state. For example, the AC/DC converter circuit may be operative to control current at the AC input to correct a power factor at the AC input port when bypassed, such that the AC/DC converter circuit may act as a line conditioner in the bypassed state.Other References
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