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A novel high Torque and low weight segmented switched reluctance motor

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Title A novel high Torque and low weight segmented switched reluctance motor
 
Creator VATTIKUTI, N
RALLABANDI, V
FERNANDES, BG
 
Description Switched reluctance motors (SRM) have advantages of low manufacturing cost, rugged and simple construction and lesser switches in drive circuit. However, some of its disadvantages are noise, torque ripple and low torque per unit volume. A few of these limitations, such as noise and low torque to volume have been mitigated in the segmented switched reluctance machine (SSRM), which uses a full-pitched winding. It is established that SSRM can give upto 40% more torque than variable reluctance switched reluctance motor (VRSRM) for the same frame size. In this paper, it is proved that if magnetic circuit of SSRM is operated in the linear region of the B-H curve there is further increase in the torque. But this results in an increase in the active weight of iron because of the higher stator yoke thickness required for this purpose. In this paper, a novel segmented switched reluctance machine is proposed. This machine has circular slots in the stator and henceforth will be referred to as circular slot segmented switched reluctance machine (CSSSRM). In CSSSRM, flux in the stator and rotor is forced to follow a circular path, thereby increasing the average torque and reducing the iron used as compared to VRSRM and SSRM. The effect of the variation in geometric parameters on the average torque is examined through finite element analysis. Comparison of CSSSRM with VRSRM and SSRM is also carried out. For the same frame size it is found that the increase in torque over VRSRM is about 62% when the magnetic circuit is operated in the linear region of the B-H curve. Further, Volt-Ampere rating of CSSSRM is predicted.
 
Publisher IEEE
 
Date 2011-10-25T01:32:14Z
2011-12-15T09:11:12Z
2011-10-25T01:32:14Z
2011-12-15T09:11:12Z
2008
 
Type Proceedings Paper
 
Identifier 2008 IEEE POWER ELECTRONICS SPECIALISTS CONFERENCE, VOLS 1-10,1223-1228
978-1-4244-1667-7
0275-9306
http://dx.doi.org/10.1109/PESC.2008.4592097
http://dspace.library.iitb.ac.in/xmlui/handle/10054/15569
http://hdl.handle.net/100/1916
 
Source 39th IEEE Power Electronic Specialists Conference (PESC 08),Rhodes, GREECE,JUN 15-19, 2008
 
Language English