公开(公告)号：US10389213B2

公开(公告)日：2019-08-20

申请号：US15293899

申请日：2016-10-14

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Yuan Xiao ,  Navid RezA Zargari ,  Lixiang Wei ,  James A. Ulrich

IPC: H02K11/00 ,  H02K11/33 ,  H02K11/22

Abstract: Disclosed examples include apparatus to couple a motor drive to a motor, including a cable with a first end coupled with an output of a motor drive, a second end coupled with a motor, a plurality of conductors to convey an output signal of the motor drive between the first and second ends to drive the motor, and a plurality of shields, with a conductive junction to couple tap points of at least two of the shields together. Resistors can be used to connect the tap points to the conductive junction to provide an impedance in series with the corresponding shield to reduce voltage stress to the motor or the cable. In certain examples, the shields include a semiconductor material to provide an impedance between the first end and the conductive junction to reduce voltage stress to the motor or the cable.