US 11,923,670 B2
ARC detection device, solar inverter, indoor wiring system, circuit breaker, solar panel, solar panel attachment module, and junction box
Tatsuo Koga, Osaka (JP); Kazunori Kidera, Osaka (JP); and Keita Kanamori, Osaka (JP)
Assigned to Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Appl. No. 17/908,317
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Mar. 3, 2021, PCT No. PCT/JP2021/008291
§ 371(c)(1), (2) Date Aug. 31, 2022,
PCT Pub. No. WO2021/182259, PCT Pub. Date Sep. 16, 2021.
Claims priority of application No. 2020-041701 (JP), filed on Mar. 11, 2020.
Prior Publication US 2023/0095385 A1, Mar. 30, 2023
Int. Cl. H02H 1/00 (2006.01); G01R 31/40 (2020.01); H02H 7/26 (2006.01); H02S 50/00 (2014.01)
CPC H02H 1/0015 (2013.01) [G01R 31/40 (2013.01); H02H 7/268 (2013.01); H02S 50/00 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An arc detection device comprising:
a low-impedance circuit connected between a first node on first wiring and a second node on second wiring, the first wiring connecting a positive electrode of a direct-current power supply and a plurality of devices, extending from the positive electrode of the direct-current power supply, and branching toward the plurality of devices, the second wiring connecting a negative electrode of the direct-current power supply and the plurality of devices, extending from the negative electrode of the direct-current power supply, and branching toward the plurality of devices, the low-impedance circuit having impedance lower than impedance of each of the plurality of devices;
an electric current detector that detects an electric current flowing through the low-impedance circuit; and
an arc determiner that determines, based on the electric current detected by the electric current detector, whether an electric arc has occurred.