US 11,835,594 B2
Short circuit detector and power converter
Kunio Matsubara, Hino (JP); and Ryoga Kiguchi, Tachikawa (JP)
Assigned to FUJI ELECTRIC CO., LTD., Kawasaki (JP)
Filed by FUJI ELECTRIC CO., LTD., Kawasaki (JP)
Filed on Dec. 29, 2021, as Appl. No. 17/564,782.
Claims priority of application No. 2021-027904 (JP), filed on Feb. 24, 2021; and application No. 2021-127745 (JP), filed on Aug. 3, 2021.
Prior Publication US 2022/0268854 A1, Aug. 25, 2022
Int. Cl. H02M 7/537 (2006.01); G01R 31/42 (2006.01)
CPC G01R 31/42 (2013.01) [H02M 7/537 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A short circuit detector that is included in a power converter, the power converter being configured to supply power to a load via a first arm including a first semiconductor switch and a second arm including a second semiconductor switch, the short circuit detector comprising:
a Rogowski coil; and
a detection circuit configured to detect a short circuit in one of the first arm, the second arm and the load, based on a detection signal obtained from the Rogowski coil,
wherein the Rogowski coil is inserted into both:
a first current path through which a first current flows in common with the first arm and the load, and
a second current path through which a second current flows in common with the second arm and the load.