Optimal rotor shape design of 3-step skew spoke type BLAC motor to reducing cogging torqueopen access
- Authors
- Kim, Sung-An; Choi, Gui-Dong; Lee, Ju; Cho, Yun-Hyun
- Issue Date
- Apr-2016
- Publisher
- IOS PRESS
- Keywords
- EPS; 3-step skewing; spoke type BLAC; cogging torque; FEA; optimization
- Citation
- INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS, v.51, pp.S135 - S145
- Indexed
- SCIE
SCOPUS
- Journal Title
- INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS
- Volume
- 51
- Start Page
- S135
- End Page
- S145
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/154895
- DOI
- 10.3233/JAE-2005
- ISSN
- 1383-5416
- Abstract
- In electric power steering (EPS), spoke type brushless ac (BLAC) motors offer distinct advantages over other electric motor types in terms of torque smoothness, reliability and efficiency. This paper deals with the shape optimization of spoke type BLAC motor, in order to minimization cogging torque. In this paper examines, 3 step skewing rotor angle, optimizing rotor core edge and rotor overlap length for minimize cogging torque in spoke type BLAC motor. The methods were applied to existing machine designs and their performance was calculated using finite-element analysis (FEA). Prototypes of the machine designs were constructed and experimental results obtained. It is shown that the FEA predicted the cogging torque to be nearly reduce using those method.
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