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Mutual inductance of switched reluctance motor and its effect on torque(PDF)

[ISSN:1007-449X/CN:23-1 408/TM]

Issue:
2009年03
Page:
332-336
Research Field:
Publishing date:

Info

Title:
Mutual inductance of switched reluctance motor and its effect on torque
Author(s):
QU Bing-ni; SONG Jian-cheng
Keywords:
switched reluctance motors mutual inductance long-flux-path short-flux-path two-phase excitation torque
PACS:
TM352
DOI:
-
Abstract:
When the switched reluctance motors operate in two phase excitation mode,the phase flux linkage will be reduced due to the high magnetic saturation in the stator and the rotor yoke.The reduction can be quantitatively calculated through mutual inductance.The computation expression of mutual inductance was proposed.The variation of mutual inductance with regard to rotor position and phase current was analyzed by finite element analysis for a prototype motor.The influence of mutual inductance on average torque was theoretically derived.The torque waveforms in steady state were simulated in two types of winding connections,which are irregular in the 8/6 four phase switched reluctance motor.Based on the mutual inductance,a technical scheme to change the parameters of asymmetrical phase windings was proposed.The simulation results show that the minimum torque and average torque are both increased,the torque ripple is reduced and the torque waveform becomes regular.

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Last Update: 2009-07-09