Invention Grant
- Patent Title: Hybrid circuit breakers
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Application No.: US17557258Application Date: 2021-12-21
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Publication No.: US11837865B2Publication Date: 2023-12-05
- Inventor: Li Qi , Yuzhi Zhang , Taosha Jiang
- Applicant: ABB S.p.A.
- Applicant Address: IT Sesto San Giovanni
- Assignee: ABB S.p.A.
- Current Assignee: ABB S.p.A.
- Current Assignee Address: IT Milan
- Agency: Armstrong Teasdale LLP
- Main IPC: H02H9/02
- IPC: H02H9/02 ; H01H9/54 ; H02H1/00 ; H03K3/017

Abstract:
In one aspect, a hybrid circuit protection device for current-limiting a fault current between a source and a load during a fault is provided. The hybrid circuit protection device includes an input configured to couple to the source, an output configured to couple to the load, a return configured to couple the source to the load, a main switch configured to selectively couple the input to the output, a switching network coupled in parallel with the main switch, and a controller. The controller is configured to determine that the main switch has opened in response to the fault current, where the fault current has an initial value, and activate the switching network to current-limit the fault current to less than the initial value during the fault.
Public/Granted literature
- US20230198248A1 HYBRID CIRCUIT BREAKERS Public/Granted day:2023-06-22
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