Investigation on Winding Theory for Short Primary Linear Machines

The winding theory is a crucial tool for analyzing the electric machines. However, some special phenomena in short primary linear machines (SPLMs) cannot be explained by the traditional theory, which is commonly applied in rotary machines (RMs). In this paper, an improved winding theory for SPLMs is...

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Bibliographic Details
Published in:IEEE transactions on vehicular technology 2021-08, Vol.70 (8), p.7400-7412
Main Authors: Ge, Jian, Xu, Wei, Liu, Yi, Xiong, Fei, Li, Dayi
Format: Article
Language:English
Subjects:
Coils (windings)
Conductors
end effect
Finite element method
Harmonic analysis
Iron
Magnetic cores
Magnetic flux
magneto-motive force (MMF)
Permeability
Rotary machines
Short primary linear machine (SPLM)
slot-vector diagram (SVD)
Two dimensional analysis
Winding
winding theory
Windings
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Summary:The winding theory is a crucial tool for analyzing the electric machines. However, some special phenomena in short primary linear machines (SPLMs) cannot be explained by the traditional theory, which is commonly applied in rotary machines (RMs). In this paper, an improved winding theory for SPLMs is presented. Starting with the magnetic field produced by a single conductor, the difference between winding theory for SPLMs and RMs is analyzed. According to the proposed theory, the pulsating magneto-motive force (MMF) and the asymmetry of the three-phase windings can be analyzed and calculated in details. It is very useful for perceiving, analysis and optimal design for the winding in SPLMs. The proposed theory is verified by 2-D finite-element analysis (FEA) and experiment.
ISSN:0018-9545
1939-9359
DOI:10.1109/TVT.2021.3089780