Patent Number: 6,310,418

Title: Reduction of sparking in large rotating electrical machines

Abstract: In a large rotating electrical machine having a rotor comprising conductor bars of copper located in slots in a rotor core and connected together at their ends to form a winding, the conductor bars are electrically insulated from the rotor core by a coating on the conductors of a ceramic-based material. The coating serves to prevent sparking occurring between the conductor bars and the rotor core.

Inventors: Clark; Paul Eaton (Rugby, GB), Regan; Roger Henry (Northants, GB)

Assignee: Alstom UK Limited

International Classification: H02K 3/34 (20060101); H02K 3/00 (20060101); H02K 3/30 (20060101); H02K 3/32 (20060101); H02K 17/16 (20060101); H02K 001/22 ()

Expiration Date: 10/30/2018