FUEL CELL BASED UNINTERRUPTIBLE POWER SUPPLY SYSTEMS

    公开(公告)号:US20240405599A1

    公开(公告)日:2024-12-05

    申请号:US18629069

    申请日:2024-04-08

    Abstract: A system includes a DC bus and an auxiliary power source coupled to the DC bus. The system further includes an energy storage device and a modular uninterruptible power supply (UPS) including a first uninterruptible power module (UPM) coupled to the DC bus and configured to provide power to an AC load from the auxiliary power source and a second UPM coupled to the DC bus and the energy storage device and configured to transfer energy between the DC bus and the energy storage device to regulate a voltage on the DC bus.

    UNINTERRUPTIBLE POWER SUPPLY SYSTEMS AND METHODS USING INTERCONNECTED POWER ROUTING UNITS

    公开(公告)号:US20200321799A1

    公开(公告)日:2020-10-08

    申请号:US16781752

    申请日:2020-02-04

    Abstract: A system includes a plurality of power routing units. Each of the power routing units includes a first AC port, a second AC port, and a static switch configured to couple and decouple the first AC port and the second AC port. Each of the power routing units further includes a DC port and a bidirectional converter circuit coupled between the second AC port and the DC port. The DC ports of the power routing units are coupled in common to a DC bus and the system further includes a control circuit configured to control the power routing units to provide power transfer between at least two of the power routing units via the DC bus.

    Grid-Edge Controllers for Uninterruptible Power Supplies and Methods of Operating the Same

    公开(公告)号:US20200274367A1

    公开(公告)日:2020-08-27

    申请号:US16798898

    申请日:2020-02-24

    Abstract: A system includes an uninterruptible power supply (UPS) configured to selectively provide power to a critical load from a grid and an energy storage device, and a grid edge controller configured to communicate with a controller of the UPS and to cause the UPS to operate the energy storage as a distributed energy resource (DER) for the grid while preserving autonomous operation of the UPS to serve the critical load. The grid edge controller may be configured, for example, to maintain a critical reserve in the energy storage device that enables the UPS to maintain the critical load, while allowing the energy storage device to also be used for demand management, frequency regulation and other grid-oriented tasks. The grid edge controller may be configured to control the UPS, for example, via an application programming interface (API) of the controller of the UPS.

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