Feature Investigation of a Segmented Pole Quasi- Halbach Tubular-Linear Synchronous Machine

IEEE Access

Jian-Xin Shen¹  Imen Abdennadher²  Mohamed Wael Zouaghi²  Ahmed Masmoudi² 

[1] Electrical Engineering Department, Zhejiang University, Hangzhou, China;Laboratory of Renewable Energies and Electric Vehicles (RELEV), Sfax Engineering National School, University of Sfax, Sfax, Tunisia;

关键词: Quasi-Halbach PM tubular-linear synchronous machine;    segmented poles;    analytical model;    3D finite element analysis;    no- and on-load features;    cost-performance trade-off;   

DOI  :  10.1109/ACCESS.2022.3145989

来源: DOAJ

【 摘 要 】

The paper is aimed at an investigation of the features of a tubular-linear synchronous quasi-Halbach machine (T-LSM) where the radially-magnetized PMs are substituted by four equal segments with parallel magnetization. This substitution is done in an attempt to improve the machine cost-effectiveness which makes it a viable candidate to equip free-piston engine-based series hybrid propulsion systems. The study is initiated by an analytical formulation of the air gap flux density considering (i) the case of the conventional quasi-Halbach T-LSM and (ii) the case of the segmented pole one. The comparison between the two T-LSMs is extended to a 3D finite element analysis (FEA)-based investigation of their no- and on-load features. Following the prototyping of the quasi-Halbach T-LSM with segmented poles, selected features predicted by 3D FEA are experimentally-validated. It is shown that while the PM segmentation slightly affects the machine back-EMF and cogging force, it has a remarkable fallout on its force production capability which makes it necessary the assessment of the cost-performance trade-off.

【 授权许可】

Unknown