DocumentCode :
1925966
Title :
Winding configurations and performance investigations of 12-stator pole variable flux reluctance machines
Author :
Liu, Xindong ; Zhu, Z.Q.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. of Sheffield, Sheffield, UK
fYear :
2013
fDate :
15-19 Sept. 2013
Firstpage :
1834
Lastpage :
1841
Abstract :
This paper presents an analysis of winding configurations in the novel 12-stator pole variable flux reluctance machines (VFRMs), which employ a doubly salient structure with stator located DC field windings. Compared with other doubly salient machines, including switched reluctance machines (SRMs) and doubly-fed doubly salient machines (DFDSMs), the winding connections are not fixed in VFRMs due to more feasible stator/rotor combinations. For VFRMs with 12-stator poles, both unity and non-unity winding distribution factors can be obtained. For example, in 11- and 13-rotor pole machines two types of winding connections can be used, but having different distribution factors. Due to the elimination of even order harmonics and significant reduction of the 5th and 7th order harmonics in the flux-linkage, negligible cogging torque and torque ripple (<;2%) can be obtained in the 11-rotor pole machine with an appropriate winding configuration. This is a further improvement of VFRMs with non-unity distribution factor compared with the machines with a unity distribution factor. In addition, compared with the 10-rotor pole machine, only a slight reduction of average torque in the 11-rotor pole machine is sacrificed. Five prototype VFRMs with a 12 pole stator and different rotor poles designs have been manufactured and used for the verification.
Keywords :
reluctance machines; rotors; stators; 11-rotor pole machine; 12-stator pole variable flux reluctance machines; DFDSM; SRM; VFRM; doubly salient structure; doubly-fed doubly salient machines; even order harmonics elimination; flux-linkage; negligible cogging torque; nonunity winding distribution factors; stator located DC field windings; switched reluctance machines; torque ripple; winding configurations; Coils; Harmonic analysis; Rotors; Stator windings; Torque; Windings;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2013 IEEE
Conference_Location :
Denver, CO
Type :
conf
DOI :
10.1109/ECCE.2013.6646931
Filename :
6646931
Link To Document :
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