METHOD AND APPARATUS FOR CONTROLLING A CURRENT FOR SOLID-STATE CIRCUIT BREAKERS
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United States of America
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Issued Date -
Feb 20, 2025
app pub date -
Aug 15, 2024
filing date -
Aug 15, 2024
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Abstract
Solid-state circuit breakers (SSB) have a fault current limiting function that limit the fault current in power applications. It allows sustained overcurrent for a certain period while preventing the fast fault current increase in dc systems. For the conventional method of using switches alone to limit the current, the high loss results in a short withstand time and low current limiting capability of the SSCBs. Disclosed are various embodiments for a control strategy to use one or more energy absorption components to handle the major part of the energy during a current limiting stage to increase the current limiting capability for series-connected SSCB switching cells.
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