Thermal Analysis of a Novel Cylindrical Transverse-Flux Permanent-Magnet Linear Machine

Bin Yu, Shukuan Zhang, Jidong Yan, Luming Cheng and Ping Zheng
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Bin Yu: School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150080, Heilongjiang, China
Shukuan Zhang: School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150080, Heilongjiang, China
Jidong Yan: ShenHua Guohua (Beijing) Gas-Fired Cogeneration Co., Ltd., Beijing 100024, China
Luming Cheng: School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150080, Heilongjiang, China
Ping Zheng: State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, Heilongjiang, China

Energies, 2015, vol. 8, issue 8, 1-23

Abstract: This paper presents a novel staggered-teeth cylindrical transverse-flux permanent-magnet linear machine (TFPMLM), which aims to improve the power factor and force density. Due to the compact structure and high performance requirement, thermal problems should be seriously considered. The three-dimensional (3-D) temperature field model is established. The determination of convection heat transfer coefficients is discussed. Equivalent thermal conductivities of stator core and winding are given to simplify the analysis. With the thermal effect of the adhesive coatings among permanent magnets (PMs) and mover yoke taken into account, the temperature field distribution and variation rules of the TFPMLM are obtained using the finite volume method (FVM). The influences of slot filling factor and air flow velocity on the temperature field distribution are analyzed. It is found that the hottest spot of the TFPMLM appears in the middle of the end winding; and there is no risk of demagnetization for PMs.

Keywords: transverse-flux permanent-magnet linear machine (TFPMLM); temperature field; finite volume method (FVM); convection heat transfer coefficient (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: 2015
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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