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

Article scientifique 2022 Anglais

Résumé

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.

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Masmoudi, A., Abdennadher, I., Zouaghi, M., Shen, J. (2022). Feature Investigation of a Segmented Pole Quasi- Halbach Tubular-Linear Synchronous Machine. https://doi.org/10.1109/access.2022.3145989

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Auteur(s)

Ahmed Masmoudi Imen Abdennadher Mohamed Wael Zouaghi Jian‐Xin Shen

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