  This paper investigates the influence of different motor stator failures on
the common-mode (CM) current. The stator winding failures will affect the
motor's CM impedance, and also increase the unbalance of the differential-mode
(DM) noise path. The experimental results show that the former will increase
the CM current induced by the CM noise source, while the latter will cause the
DM current induced by the DM noise source to be converted into the CM current.
