Rotor with form wound coils for synchronous dynamoelectric machine

Abstract From the Canadian patent

A rotor is provided for synchronous generators and motors of relatively small size, and especially for high speed machines. The rotor has a laminated core with winding slots arranged in spaced groups around the core providing unslotted pole face regions between them. A progressive winding using form wound coils is placed in the slots to provide a multi-pole magnetic field. Means are provided for bracing the end turns of the winding including insulating spacing means to fill the spaces between groups of coil end turns corresponding to the pole face regions.