公开(公告)号：US10168376B2

公开(公告)日：2019-01-01

申请号：US15339117

申请日：2016-10-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jing Yang ,  Zongwang Zhang

IPC: G01R31/02 ,  G01R31/12 ,  G01R19/10 ,  G01R19/00

Abstract: A leakage current detection circuit includes a first resistor located on a positive direct current bus, a second resistor located on a negative direct current bus, and a detection processing circuit separately connected to the first resistor and the second resistor, where the first resistor and the second resistor are located on a trunk circuit in a system including the positive direct current bus, the negative direct current bus, and a load, and the detection processing circuit is configured to detect a current flowing through the first resistor, detect a current flowing through the second resistor, and determine a difference between the current flowing through the first resistor and the current flowing through the second resistor as a leakage current.

公开(公告)号：US20170045568A1

公开(公告)日：2017-02-16

申请号：US15339117

申请日：2016-10-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jing Yang ,  Zongwang Zhang

IPC: G01R31/02 ,  G01R31/12

CPC classification number: G01R31/025 ,  G01R19/0092 ,  G01R19/10 ,  G01R31/02 ,  G01R31/1272

Abstract: A leakage current detection circuit includes a first resistor located on a positive direct current bus, a second resistor located on a negative direct current bus, and a detection processing circuit separately connected to the first resistor and the second resistor, where the first resistor and the second resistor are located on a trunk circuit in a system including the positive direct current bus, the negative direct current bus, and a load, and the detection processing circuit is configured to detect a current flowing through the first resistor, detect a current flowing through the second resistor, and determine a difference between the current flowing through the first resistor and the current flowing through the second resistor as a leakage current.

Abstract translation: 泄漏电流检测电路包括位于正直流母线上的第一电阻器，位于负直流母线上的第二电阻器和分别连接到第一电阻器和第二电阻器的检测处理电路，其中第一电阻器和 第二电阻器位于包括正直流母线，负直流母线和负载的系统中的干线电路上，并且检测处理电路被配置为检测流过第一电阻器的电流，检测流过的电流 第二电阻器，并且确定流过第一电阻器的电流和流过第二电阻器的电流之间的差作为漏电流。