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%.

引用

页数：10

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