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Published in

American Institute of Physics, Journal of Applied Physics, 17(117), p. 17B519, 2015

DOI: 10.1063/1.4916186

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Investigation of a tubular dual-stator flux-switching permanent-magnet linear generator for free-piston energy converter

Journal article published in 2015 by Yi Sui, Ping Zheng, Chengde Tong, Bin Yu, Shaohong Zhu, Jianguo Zhu ORCID
This paper is available in a repository.
This paper is available in a repository.

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Abstract

This paper describes a tubular dual-stator flux-switching permanent-magnet (PM) linear generator for free-piston energy converter. The operating principle, topology, and design considerations of the machine are investigated. Combining the motion characteristic of free-piston Stirling engine, a tubular dual-stator PM linear generator is designed by finite element method. Some major structural parameters, such as the outer and inner radii of the mover, PM thickness, mover tooth width, tooth width of the outer and inner stators, etc., are optimized to improve the machine performances like thrust capability and power density. In comparison with conventional single-stator PM machines like moving-magnet linear machine and flux-switching linear machine, the proposed dual-stator flux-switching PM machine shows advantages in higher mass power density, higher volume power density, and lighter mover.