Title :
A Novel 24-Slots/10-Poles Winding Topology for Electric Machines
Author :
Dajaku, Gurakuq ; Gerling, Dieter
Author_Institution :
FEAAM GmbH, Neubiberg, Germany
Abstract :
The fractional slots tooth concentrated windings are characterized with high space MMF harmonics which results to undesirable effects on electric machine, such as localised core saturation, eddy current loss in the rotor and noise and vibration. A new and high efficiency method is presented in this paper to reduce simultaneously the sub- and high MMF harmonics of these winding types. The method is based on doubling the number of stator slots, using two identical winding systems connected in series and shifted to each other for a specific angle, using stator core with different tooth width and using different turns per coil for the neighbouring phase coils. With the proposed technique the unwanted sub- and high winding MMF harmonics can be reduced or completely canceled.
Keywords :
eddy current losses; electric machines; stators; eddy current loss; electric machines; fractional slots tooth concentrated windings; high space MMF harmonics; localised core saturation; phase coils; rotor; stator core; stator slots; tooth width; winding systems; winding topology; winding types; Coils; Harmonic analysis; Rotors; Stator windings; Torque; Traction motors; Windings;
Conference_Titel :
Electric Machines & Drives Conference (IEMDC), 2011 IEEE International
Conference_Location :
Niagara Falls, ON
Print_ISBN :
978-1-4577-0060-6
DOI :
10.1109/IEMDC.2011.5994889