Multi Expansion Point Reduced Order Modelling for Electromagnetic Design of Power Electronics
Multi Expansion Point Reduced Order Modelling for Electromagnetic Design of Power Electronics
复制标题
电力电子电磁设计的多展开点降阶建模
DOI：
10.1109/dmc51747.2021.9529950
复制
发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Gao X
中科院分区：
文献类型：
--
作者：
Gao X
现代电力电子系统的运行速度、电压、功率和温度都有增加的趋势。为了减少电力电子系统电磁建模的仿真时间，采用了模型降阶（莫尔）技术。传统的莫尔方法在DC或0Hz处使用单个扩展点，但这在宽频率范围内不能给出准确的结果。在这项工作中，Krylov子空间为基础的莫尔技术方法，使用多个扩展点，以加快模拟。通过一个算例，说明了多扩展点莫尔方法在电磁建模中的应用，并与单扩展点莫尔方法在宽频率范围内进行了比较。通过特征值分析，分析了标准单点莫尔法存在局限性的原因。
Modern power electronic systems operate with a trend of increasing speeds, voltage, power and temperature. In order to reduce the simulation time for electromagnetic(EM) modelling in power electronic systems, Model Order Reduction(MOR) technique is applied. The conventional MOR method uses a single expansion point at DC or 0Hz but this doesn’t give accurate results over a wide range of frequencies. In this work, a Krylov subspace based MOR technique method using multiple expansion points is introduced to accelerate the simulation. A test case will be given to demonstrate the application of multi-expansion point MOR method in EM modelling to evaluate multi-expansion point MOR compared with single point MOR in wide frequency range. Eigenvalue analysis will be illustrated to analysis the reason of the limitation of standard single-point MOR method.