3-D Numerical Hybrid Method for PM Eddy-Current Losses Calculation: Application to Axial-Flux PMSMs

被引：31
作者：
Benlamine, Raouf [1 ]
Dubas, Frederic [1 ]
Randi, Sid-Ali [2 ]
Lhotellier, Dominique [2 ]
Espanet, Christophe [1 ]
机构：
[1] Univ Franche Comte, FEMTO ST Inst, Dept Energy, F-90010 Belfort, France
[2] Renault Technocenter, F-78288 Guyancourt, France
来源：
IEEE TRANSACTIONS ON MAGNETICS | 2015年 / 51卷 / 07期
关键词：
Axial-flux; eddy-current; finite-difference; finite-element; permanent-magnet (PM) machines; resistance-limited; PERMANENT-MAGNET MACHINES; SYNCHRONOUS MOTORS; COGGING TORQUE; POWER LOSS; ROTOR; SEGMENTATION; INTERIOR; REDUCTION; DRIVES; MODEL;
D O I：
10.1109/TMAG.2015.2405053
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：
This paper describes a 3-D numerical hybrid method (NHM) of the permanent-magnet (PM) eddy-current losses in axial-flux PM synchronous machines (PMSMs). The PM magnetic flux density is determined using the multi-static 3-D finite-element method (FEM) at resistance-limited (i.e., without eddy-current reaction field). Based on the predicted flux density distribution, the eddy-currents induced in the PMs and the 3-D PM eddy-current losses are calculated by 3-D finite-difference method (FDM) considering a large mesh. Therefore, this 3-D NHM is based on a coupling between the multi-static 3-D FEM and the 3-D FDM. Two 24-slots/16-poles (i.e., fractional-slot number) axial-flux PMSMs having a non-overlapping winding (all teeth wound type) with stator double-sided structure are studied: 1) surface-PM (SPM) and 2) interior-PM (IPM) To evaluate the reliability of the proposed technique, the 3-D PM eddy-current losses are determined and compared with transient 3-D FEM (i.e., magneto-dynamical 3-D FEM). The same nonlinear properties of the laminations have been applied for multi-static/transient 3-D FEM. The computation time can be divided by 25 with a difference less than 12%.
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页数：10
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