公开(公告)号：US20180306853A1

公开(公告)日：2018-10-25

申请号：US15766132

申请日：2015-10-05

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Max-Josef KELL ,  Stefan SCHROEDER ,  Jie SHEN ,  Zhihui YUAN ,  Yunzheng CHEN ,  Mohamed HASHEM

IPC: G01R31/08 ,  H02H1/00 ,  G01R31/02

CPC classification number: G01R31/086 ,  G01R31/025 ,  H02H1/0007 ,  H02H3/105 ,  H02H3/162 ,  H02H3/36 ,  H02H7/1216 ,  H02H7/122 ,  H02H7/125 ,  H02H7/22 ,  H02J3/36 ,  Y02E60/60

Abstract: A drive system includes a current sensor configured to generate a first current signal representative of a current flowing in one or more electrical devices electrically coupled together through a power supply bus, a power output bus, and a common ground. The drive system also includes a voltage sensor configured to generate a first voltage signal representative of a voltage with respect to the common ground in the one or more electrical devices. The drive system further includes a ground fault detection controller configured to determine a ground fault in the one or more electrical devices based on a change in at least one of the first current signal and the first voltage signal.