Journal
JOURNAL OF MAGNETICS
Volume 27, Issue 1, Pages 28-34Publisher
KOREAN MAGNETICS SOC
DOI: 10.4283/JMAG.2022.27.1.028
Keywords
coordinate transformation; curvature factor; simplified sub-domain model; magnetic field
Funding
- National Nature Science Foundation of China [51907027]
- BUCEA Young Scholar Research Capability Improvement Plan [X21081]
- Jiangsu Provincinal Grant [JSSCBC20210306]
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This paper presents a simple and improved analytical model for linear permanent magnet synchronous machines (LPMSM) based on the correction factor. The proposed model, developed in Cartesian coordinate, simplifies the subdomains of LPMSM from 6 to 3 using curvature equations. The magnetic flux density and force analysis shows that the proposed approach aligns with finite element model. Additionally, the reduced calculation domains and harmonic orders make the proposed AM faster.
A simple and improved analytical model (AM) for linear permanent magnet synchronous machine (LPMSM) based on the correction factor is presented in this paper. A slotless linear permanent magnet machine (PLPM) with AM developed in Cartesian coordinate is selected to investigate. Consequently, the fitting equations of curvature factors for the permanent magnet and armature are obtained. The subdomains for LPMSM are simplified from 6 down to 3 domains based on curvature equations. The magnetic flux density and force show that the proposed approach agrees with the finite element (FE) model. Moreover, the reduced calculation domains and harmonic orders make AM proposed in the paper much faster. The main contribution of the work is to present a simple strategy for coordinate transformation and calculation strategy for LPMSM, which provides guideline for designers to investigate the machines developed in Cartesian coordinate.
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