大规模工程涡流场有限元计算的困境与展望  

Plight and Perspective of Large-scale Engineering Eddy Current Field FEM Computation

作　　者：谢德馨[1] 朱占新[2] 吴东阳[1] 王健[2] 

机构地区：[1]沈阳工业大学电气工程学院,辽宁省沈阳市110870 [2]特变电工沈阳变压器集团有限公司,辽宁省沈阳市110144

出　　处：《中国电机工程学报》2015年第5期1250-1257,共8页Proceedings of the CSEE

摘　　要：精确计算涡流场分布及其在导电材料中产生的损耗,对于电工设备的优化设计与安全运行至关重要。在现阶段,特大型电机、变压器等电工设备中的三维工程涡流场有限元分析存在计算规模大、计算时间长和计算精度不能满足工程精度要求的问题。该文主要从计算方法的层面分析这类问题的研究现状和关键难点,介绍诸如叠片铁心材料特性的传统和改进型均匀化模型、子问题扰动有限元法、区域分解法、单元级别的并行有限元法等针对上述问题的研究对策,分析不同方法的优点和局限性,并提出对今后进一步研究策略的建议,作为快速、高效地实现三维工程涡流场大规模计算任务的参考。The accurate computation of the distribution of eddy current field and the losses due to its induction in conducting materials is very important for the optimal design and safe operation of electrical equipments. However, till now in the finite element analysis of the engineering eddy current fields in electrical devices, such as the electrical machines and transformers, there are the problems e.g. the huge scale of computation, too long computing time and poor precision which could not meet the demand of engineering accuracy yet. The current research situation and difficulty of these problems were analyzed mainly from the aspect of computation methodology. The methods to deal with these problems, e.g., homogenization models of the laminated iron core, conventional and improved; the sub-problem perturbation finite element method; the domain decomposition method; and the element-level parallel finite element method were described. Their advantages and limitations were discussed, and the authors＇ suggestions for the further research strategies were also included as the reference for carrying out three dimensional engineering eddy current field calculation with large scale fast and effectively.

关 键 词：工程涡流场 大规模计算 叠片铁心均匀化 有限元法(FEM) 子问题扰动 单元接单元(EBE)并行计算 

分 类 号：TM351[电气工程—电机]