Characteristics Analysis and Comparison of a Cylindrical Linear Induction Motor with Composite Secondary Structure

Chunyu Du, Lu Zhang (), Xu Niu and Kai Yang
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Chunyu Du: Department of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150080, China
Lu Zhang: Department of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150080, China
Xu Niu: Department of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150080, China
Kai Yang: Department of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150080, China

Energies, 2024, vol. 17, issue 6, 1-12

Abstract: The cylinder linear induction motor (CLIM) is a variation of the rotary induction motor. Its structure is simple, it has a low manufacturing cost, and it can generate linear thrust without the need for a conversion mechanism. It is particularly suitable for electromagnetic catapults, magnetic levitation transport, and industrial production fields, due to its strong environmental adaptability. Designing a high-thrust and high-efficiency CLIM is a great challenge due to its inherent drawbacks, such as the low thrust density and power density of induction motors. In this article, two CLIMs with different topologies are proposed to meet the demand for control-rod drives in high-temperature and high-pressure environments. The article elucidates the topologies of the two CLIMs and proposes an analytical computational approach for the CLIM. Modern optimization algorithms were utilized to optimize the design of the structural parameters of both CLIMs. A 3D-FEA simulation was used to compare and analyze the air-gap magnetism and thrust characteristics of two CLIMs. The results indicate that the copper-ring secondary CLIM has a higher thrust density and is more suitable for use in control-rod drive mechanism (CRDM) systems.

Keywords: linear induction motor; cylindrical induction linear motor; eddy current; flat-solid secondary structure; ladder-slit secondary structure (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: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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