公开(公告)号：US20200014188A1

公开(公告)日：2020-01-09

申请号：US16483414

申请日：2018-01-31

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tatsuo KOGA

IPC: H02H1/00 ,  H02H3/16 ,  G05F3/08

Abstract: An arc detection circuit that detects an arc that occurs in a transmission path that transmits power from a power supply apparatus to a power conditioner, the arc detection circuit includes: a current detector that detects a current flowing through the transmission path; a storage unit configured to store a base characteristic which is a frequency characteristic of the current flowing through the transmission path when the arc is not present; and an arc determination unit configured to determine whether the arc has occurred based on a result of a comparison between the base characteristic and a detection characteristic which is a frequency characteristic of the current detected by the current detector.