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An Asymmetric Rotor Design of Interior Permanent Magnet Synchronous Motor for Improving Torque Performance

Title
An Asymmetric Rotor Design of Interior Permanent Magnet Synchronous Motor for Improving Torque Performance
Author
홍정표
Keywords
average torque; torque ripple; flux distribution; permanent magnet position; rotor core saturation; response surface methodology
Issue Date
2015-12
Publisher
KOREAN MAGNETICS SOC
Citation
JOURNAL OF MAGNETICS, v. 20, NO 4, Page. 387-393
Abstract
Torque ripple is necessarily generated in interior permanent magnet synchronous motors (IPMSMs) due to the non-sinusoidal distribution of flux density in the air gap and the magnetic reluctance by stator slots. This paper deals with an asymmetric rotor shape to reduce torque ripple which can make sinusoidal flux density distribution in the air gap. Meanwhile the average torque is relatively increased by the asymmetric rotor. Response surface method (RSM) is applied to find the optimum position of the permanent magnets for the IMPSM with improved torque performance. Consequently, an asymmetric structure is the result of RSM and the structure has disadvantage of a mechanical stiffness. Finally, the performance of suggested shape is verified by finite element analysis and structural analysis is conducted for the mechanical stiffness.
URI
http://koreascience.or.kr/article/ArticleFullRecord.jsp?cn=E1MGAB_2015_v20n4_387http://hdl.handle.net/20.500.11754/29561
ISSN
1226-1750; 2233-6656
DOI
10.4283/JMAG.2015.20.4.387
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > AUTOMOTIVE ENGINEERING(미래자동차공학과) > Articles
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