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公开(公告)号：US10666088B2
公开(公告)日：2020-05-26
申请号：US16472354
申请日：2017-12-06
Applicant: ABB Schweiz AG
Inventor： Jan Svensson , Kalle Ilves , Minos Beniakar , Theodore Soong , Nick Elliott
Abstract: A protection arrangement for an uninterruptible power supply system including at least one vacuum circuit breaker connected in series with an inductive element, the protection arrangement including a first bypass branch and a first grounding branch, the first bypass branch being connected in parallel with the inductive element and including two series-connected protective components of a first type and a bypass branch midpoint between them, where the first grounding branch is connected between the bypass branch midpoint and ground and includes a first grounding surge arrester.
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公开(公告)号：US20190363572A1
公开(公告)日：2019-11-28
申请号：US16472354
申请日：2017-12-06
Applicant: ABB Schweiz AG
Inventor： Jan Svensson , Kalle Ilves , Minos Beniakar , Theodore Soong , Nick Elliott
Abstract: A protection arrangement for an uninterruptible power supply system including at least one vacuum circuit breaker connected in series with an inductive element, the protection arrangement including a first bypass branch and a first grounding branch, the first bypass branch being connected in parallel with the inductive element and including two series-connected protective components of a first type and a bypass branch midpoint between them, where the first grounding branch is connected between the bypass branch midpoint and ground and includes a first grounding surge arrester.
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公开(公告)号：US20240356338A1
公开(公告)日：2024-10-24
申请号：US18761432
申请日：2024-07-02
Applicant: ABB SCHWEIZ AG
Inventor： Sridhar Pulikanti , Simon Walton , Robert Turner , Nick Elliott
Abstract: A method of regulating frequency of plurality of uninterruptible power supply units and corresponding uninterruptible power supply (UPS) unit. The method includes broadcasting, to a controller of a UPS unit, an expected synchronization direction to other UPS units via a communication link, the expected synchronization direction being determined based on a frequency of the corresponding UPS units and a frequency of a grid. The method includes obtaining the expected synchronization directions of other UPS units via the communication link; determining a major synchronization direction based on the expected synchronization direction of each UPS unit; and regulating a frequency of each UPS unit based on the major synchronization direction.
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公开(公告)号：US20180145538A1
公开(公告)日：2018-05-24
申请号：US15856867
申请日：2017-12-28
Applicant: ABB Schweiz AG
Inventor： Sridhar Pulikanti , Simon James Walton , Robert Turner , Nick Elliott
IPC: H02J9/06
Abstract: The present invention provides a method for operation of an offline uninterrupted power supply (100), in particular a medium-voltage uninterrupted power supply, for providing power to a load in case of failure of a power source, the uninterrupted power supply (100) comprising at least one disconnect switch (112), which is arranged between the power source and the load, at least one energy storage (114), at least one power converter (116), which is arranged between the at least one energy storage (114) and the load at a load side of the disconnect switch (112), and a control device (120) for controlling the at least one power converter (116) to provide power from the at least one energy storage (114) to the load in case of failure of the power source, comprising the steps of identifying a power quality event, differentiating the identified power quality events to separate load side events from power supply side quality events, and upon identification of a power supply side power quality event from an identified power quality event, providing power from the at least one energy storage (114) to the load. The present invention also provides a offline uninterrupted power supply (100), in particular a medium-voltage uninterrupted power supply, to perform the above method.
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