Design Issues for Claw Pole Machines with Soft Magnetic Composite Cores

Chengcheng Liu, Jiawei Lu, Youhua Wang, Gang Lei, Jianguo Zhu and Youguang Guo
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Chengcheng Liu: State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Electrical Engineering, Hebei University of Technology, Tianjin 300130, China
Jiawei Lu: State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Electrical Engineering, Hebei University of Technology, Tianjin 300130, China
Youhua Wang: State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Electrical Engineering, Hebei University of Technology, Tianjin 300130, China
Gang Lei: School of Electrical and Data Engineering, University of Technology Sydney, Ultimo, NSW 2007, Australia
Jianguo Zhu: School of Electrical and Information Engineering, University of Sydney, Ultimo, NSW 2007, Australia
Youguang Guo: School of Electrical and Data Engineering, University of Technology Sydney, Ultimo, NSW 2007, Australia

Energies, 2018, vol. 11, issue 8, 1-15

Abstract: By using global ring winding, the torque coefficient of the transverse flux machine (TFM) is proportional to its number of pole pairs, and thus the TFM possesses high torque density ability when compared with other electrical machines. As a special kind of TFM, the claw pole machine (CPM) can have more torque due to its special claw pole teeth. The manufacturing of CPM or TFM with silicon steels was very difficult in the past, and is a handicap for the progress of this kind of machine. Thanks to the advent of soft magnetic composite (SMC) materials, the manufacturing process of CPM has become more and more simple. More attention has been paid to this kind of technology, and some mass production CPMs with SMC cores have appeared. However, there are few works that discuss the key design issues for this kind of machine. In this paper, a small CPM with SMC is used as as a research benchmark. Various design methods that can be adopted to improve its performance have been studied, including unequal stator claw pole teeth, a skewing magnet design, consequent pole design, and etc. The 3D finite element method (FEM) is used for the machine analysis, and it is verified by the experimental results of a CPM with SMC cores.

Keywords: claw pole machine (CPM); soft magnetic composite (SMC); design issues; finite element method (FEM) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (7)

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