HTR-PM一次氦循环器AMB涡流损耗的有限元分析

Volume 2: Plant Systems, Structures, Components, and Materials; Risk Assessments and Management Pub Date : 2018-07-22 DOI:10.1115/ICONE26-81375

Jinpeng Yu, Yan Zhou, Mo Ni, Guojun Yang, Lei Zhao

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引用次数: 0

摘要

在主动磁轴承(AMB)系统中，转子在转动过程中产生涡流，从而产生电磁轴承损耗和涡流磁场。涡流磁场会使电磁力减小，产生电机的电阻转矩。基于HTR-PM中主氦循环器(PHC)的AMB，建立了二维(2D)和三维(3D) AMB模型，并利用maxwell有限元分析(FEA)对其进行了分析。二维有限元分析表明，涡流损耗和电阻转矩随着转子转速的增加而增大，涡流磁场会影响气隙磁场，使电磁力减小。三维有限元分析表明，将转子划分为绝缘片可以减小涡流损耗。损失与板厚呈线性关系，这与理论分析不同。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Finite Element Analysis of AMB Eddy-Current Loss in HTR-PM Primary Helium Circulator

In the active magnetic bearing (AMB) system, the eddy current is generated during the rotation of the rotor, which brings about the AMB loss and eddy-current magnetic field. The eddy-current magnetic field will reduce the electromagnetic force and generate the resistance torque of the AMB. Basing on the AMB of the Primary Helium Circulator (PHC) in HTR-PM, two-dimensional (2D) and three-dimensional (3D) AMB models are built and analyzed with finite element analysis (FEA) in maxwell. The 2D FEA shows that the eddy-current loss and the resistance torque increase as the rotor speed increases, and the eddy-current magnetic field will affect the air-gap magnetic field and reduce the electromagnetic force. The 3D FEA shows that dividing the rotor in insulate sheets can reduce the eddy-current loss. The loss and the sheets thickness have a linear relationship, which is different from the theoretical analysis.

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来源期刊

Volume 2: Plant Systems, Structures, Components, and Materials; Risk Assessments and Management

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