A tubular hybrid Halbach/axially-magnetized permanent-magnet linear machine | Zendy

Yi Sui | Zendy; Yong Liu | Zendy; Luming Cheng | Zendy; Jiaqi Liu | Zendy; Ping Zheng | Zendy

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A tubular hybrid Halbach/axially-magnetized permanent-magnet linear machine

Author(s) -

Yi Sui,

Yong Liu,

Luming Cheng,

Jiaqi Liu,

Ping Zheng

Publication year - 2017

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4974278

Subject(s) - axial symmetry , magnet , stirling engine , finite element method , mechanical engineering , halbach array , piston (optics) , topology (electrical circuits) , physics , power density , power (physics) , control theory (sociology) , mechanics , engineering , computer science , electrical engineering , optics , quantum mechanics , wavefront , thermodynamics , control (management) , artificial intelligence

A single-phase tubular permanent-magnet linear machine (PMLM) with hybrid Halbach/axially-magnetized PM arrays is proposed for free-piston Stirling power generation system. Machine topology and operating principle are elaborately illustrated. With the sinusoidal speed characteristic of the free-piston Stirling engine considered, the proposed machine is designed and calculated by finite-element analysis (FEA). The main structural parameters, such as outer radius of the mover, radial length of both the axially-magnetized PMs and ferromagnetic poles, axial length of both the middle and end radially-magnetized PMs, etc., are optimized to improve both the force capability and power density. Compared with the conventional PMLMs, the proposed machine features high mass and volume power density, and has the advantages of simple control and low converter cost. The proposed machine topology is applicable to tubular PMLMs with any phases

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