公开(公告)号：US10585134B2

公开(公告)日：2020-03-10

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 ,  H02H3/16 ,  H02H7/22 ,  H02H3/10 ,  H02H3/36 ,  H02H7/12 ,  H02J3/36 ,  H02H1/00 ,  G01R31/02 ,  H02H7/122 ,  H02H7/125

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.