Design and Analysis of an Interior Permanent Magnet Linear Vernier Machine

作者：Shi, Chaojie; Qu, Ronghai; Gao, Yuting^*; Li, Dawei; Jing, Libing; Zhou, You

来源：IEEE Transactions on Magnetics, 2018, 54(11): 8106805.

DOI：10.1109/TMAG.2018.2840832

• Interior permanent magnet (IPM)
• linear machine
• thrust ripple
• vernier machine

A novel interior permanent magnet linear vernier machine (IPM-LVM) is proposed and analyzed in this paper. Compared to the existing surface-mounted permanent magnet linear vernier machine (SPM-LVM) and the SPM-LVM with Halbach arrays, the proposed machine can offer higher flux density in both the air-gap and armature iron core, which lead to a higher back electric motive force (back EMF) and higher thrust density under the same mover volume and heat capacity. Besides, it is proven that the proposed IPM-LVM also has a lower demagnetization risk compared to the SPM-LVM. Furthermore, in order to reduce the thrust ripple of the proposed machine, the three-sectional structure is adopted in this paper, which makes the proposed IPM-LVM exhibit high thrust density and low thrust ripple at the same time.

• 出版日期2018-11
• 单位华中科技大学