Semi-Analytical Magnetic Field Calculation for Dual-Rotor Permanent-Magnet Synchronous Machines by Using Hybrid Model

被引:2
|
作者
Ladghem-Chikouche, Brahim [1 ,2 ]
Boughrara, Kamel [2 ]
Dubas, Frederic [3 ]
Roubache, Lazhar [1 ]
Ibtiouen, Rachid [2 ]
机构
[1] Univ Msila, Fac Technol, Dept Elect Engn, Msila 28000, Algeria
[2] Ecole Natl Polytech, Dept Electrotech, Lab Rech Elect LRE ENP, Algiers 16200, Algeria
[3] Univ Bourgogne Franche Comte, CNRS, Dept Energie, FEMTO ST, F-90000 Belfort, France
关键词
Electrical machines; exact subdomain (SD) technique; finite relative permeability; finite-difference method (FDM); finite-element analysis (FEA); magnetic field;
D O I
10.1109/TMAG.2021.3127359
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Based exclusively on the exact subdomain (SD) technique and finite-difference method (FDM), this article proposes a 2-D hybrid model (HAM) for the semi-analytical magnetic field calculation in electrical machines at no-/on-load conditions. It is applied to dual-rotor permanent-magnet (PM) synchronous machines. The magnetic field is computed by solving Laplace's and Poisson's equations through exact SD technique in all regions at unitary relative permeability (i.e., PMs, air gap, and slots) with a numerical model based on FDM in ferromagnetic regions (i.e., teeth and rotor/stator yokes). These two models are specifically coupled in both directions (i.e., r- and theta-edges) of the (non-)periodicity direction (i.e., in the interface between teeth regions and all its adjacent regions as slots and/or air gap). To provide accurate solutions, the current density distribution in slots regions is modeled by using Maxwell's equations. The finite-element analysis (FEA) demonstrates highly accurate results of the developed technique. The 2-D HAM is approximate to 6 times faster than 2-D FEA.
引用
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页数:10
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