铁磁流体变压器的传热:多物理场有限元建模

IF 1.8 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Sleimane Nasser El Dine;Xavier Mininger;Caroline Nore
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引用次数: 0

摘要

本文采用基于三维有限元法的热流磁分析方法研究了铁磁变压器内部的冷却效率。这种冷却方法首先在轴对称线圈上进行了实验和数值测试。通过对数值和实验结果的交叉验证,建立了400/230V非轴对称铁磁铁心变压器的模型。该装置浸泡在一个装满钴铁氧体纳米颗粒的米德尔植物油的钢罐中。记录了是否激活亥姆霍兹磁力时温度的时间演变。当考虑磁力的影响时,观察到线圈传感器的局部温度降低了约10 K。数值结果证明了热磁对流对变压器冷却的有利作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Heat Transfer in a Ferrofluid-Based Transformer: Multiphysics Modeling Using the Finite Element Method
This paper deals with a thermal-fluid-magnetic analysis based on the 3D finite element method to study the cooling efficiency inside a ferrofluid-based transformer. This cooling approach is first tested, both experimentally and numerically, on an axisymmetric coil. After cross-validation of the numerical and experimental results, a 400/230V transformer with a non-axisymmetric ferromagnetic core is modeled. The device is immersed in a steel tank filled with cobalt ferrite nanoparticles-based Midel vegetable oil. The time evolution of the temperature is recorded whether the Helmholtz magnetic force is activated or not. A decrease in the local temperature of the coil sensors by about 10 K is observed when the impact of the magnetic force is considered. Numerical results prove the beneficial effect of thermomagnetic convection on transformer cooling.
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CiteScore
4.30
自引率
0.00%
发文量
27
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