US 12,322,952 B2
DC solid state circuit breakers for bidirectional applications
Guang Yang, Johns Creek, GA (US)
Assigned to SIEMENS INDUSTRY, INC., Alpharetta, GA (US)
Filed by Siemens Industry, Inc., Alpharetta, GA (US)
Filed on Sep. 26, 2023, as Appl. No. 18/474,650.
Prior Publication US 2025/0105617 A1, Mar. 27, 2025
Int. Cl. H02H 3/087 (2006.01); H02H 1/00 (2006.01)
CPC H02H 3/087 (2013.01) [H02H 1/0007 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A direct current (DC) solid state circuit breaker, comprising:
a first terminal;
a second terminal;
a power electronics section comprising at least a first transistor switch; and
one or more airgap sections comprising at least a second transistor switch and a third transistor switch, the second transistor switch and the third transistor switch arranged in back to back configuration such that i) the second transistor switch is configured to interrupt current flowing in a first direction from the first terminal to the second terminal and ii) the third transistor switch is configured to interrupt current flowing in a second direction from the second terminal to the first terminal; and
a controller configured to detect a fault condition and control operation of the power electronics section and the one or more airgap sections in response to detecting the fault condition.