US 12,334,295 B2
Solid state circuit breaker snubber
Andrew McLean, Halesowen (GB)
Assigned to Hamilton Sundstrand Corporation, Charlotte, NC (US)
Filed by Hamilton Sundstrand Corporation, Charlotte, NC (US)
Filed on Jun. 1, 2023, as Appl. No. 18/204,847.
Claims priority of application No. 22275075 (EP), filed on Jun. 2, 2022.
Prior Publication US 2023/0395335 A1, Dec. 7, 2023
Int. Cl. H02M 1/34 (2007.01); H01H 9/54 (2006.01)
CPC H01H 9/541 (2013.01) [H02M 1/344 (2021.05)] 20 Claims
OG exemplary drawing
 
1. A bidirectional solid state circuit breaker (SSCB) comprising: a main SSCB circuit configured to be connected between a three-phase alternating current (AC) power supply and a load, the main SSCB circuit comprising first and second semiconductor switches connected in series for each of three phases of the three-phase AC power supply, and a single snubber circuit having a first end connected to a first end of the first semiconductor switch and a second end connected to a second end of the second semiconductor switch for all of the three phases, the single snubber circuit comprising a capacitor and a transient voltage suppressor (TVS) connected in series.