Linear Subspace Reduction for Quasistatic Field Simulations to Accelerate Repeated Computations

Linear Subspace Reduction for Quasistatic Field Simulations to Accelerate Repeated Computations
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准静态场仿真的线性子空间缩减以加速重复计算

DOI:
10.1109/tmag.2013.2280693
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发表时间:
2014
影响因子:
2.1
通讯作者:
M. Clemens
M. Clemens
中科院分区:
工程技术4区
文献类型:
--
作者:
D. Schmidthausler;S. Schops;M. Clemens

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电机和高压电器的设计需要对非线性低频电磁问题进行时域仿真。典型的磁矢量/标量电势公式中的磁准静态和电准静态问题在空间离散化之后分别导致微分代数方程或常微分方程。因此,在这两种情况下都必须求解庞大的方程组。通常,大量的自由度(DoF)在具有恒定材料参数的域中,即,线性子域,例如,外部区域的空气或真空。在本文中,我们提出了一种基于适当的正交分解,以减少在这些线性子空间的自由度的低频模拟的方法。该方法的应用将被示出为一个简单的Transformer模型,并在一个全球性的灵敏度分析(不确定性量化)的开关点中使用的非线性电阻材料在一个11 kV的标准绝缘子模型。
The design of electrical machines and high-voltage devices requires the simulation of non-linear low frequency electromagnetic problems in time domain. Typically magneto- and electro-quasistatic problems in magnetic vector/electric scalar potential formulation lead after space discretization to differential-algebraic or ordinary differential equations, respectively. Therefore, huge systems of equations have to be solved in both cases. Typically a large number of degrees of freedom (DoF) is in domains with constant material parameters, i.e., linear subdomains, e.g., air or vacuum in exterior domains. In this paper, we present a method for low frequency simulations based on the proper orthogonal decomposition to reduce the DoF in these linear subspaces. The application of the method will be shown for a simple transformer model and within a global sensitivity analysis (uncertainty quantification) of the switching point in a non-linear resistive material used in a 11 kV standard insulator model.
DOI: 10.1109/tmag.2013.2241041
发表时间: 2013
影响因子: 2.1
作者:
Bartel;De Gersem;Hülsmann;Römer;Schöps;Weiland
通讯作者: Weiland
非线性各向异性卷曲 DAE 的分解与正则化
影响因子: 0.7
作者:
Clemens;Schöps;De Gersem;Bartel
通讯作者: Bartel