基于改进传输线法的电器温度场并行有限元计算  

Improved Transmission Line Method for Parallel Finite Element Calculation in Temperature Field of Electrical Apparatus

作　　者：邱子澜 杨文英[1] 彭飞[1] 翟国富[1] QIU Zilan;YANG Wenying;PENG Fei;ZHAI Guofu(Instituteof Reliability in Electrical Apparatus and Electronics,Harbin Institute of Technology,Harbin 150001,China)

机构地区：[1]哈尔滨工业大学电器与电子可靠性研究所,黑龙江哈尔滨150001

出　　处：《电器与能效管理技术》2022年第3期30-38,共9页Electrical & Energy Management Technology

摘　　要：大功率电器产品的优化设计,以及电器多物理场耦合仿真的发展,对电器温度场仿真的求解精度以及求解效率提出了更高的需求。使用传输线法(TLM)加速三维非线性热传导有限元(FEM)的求解,为进一步提高计算效率,提出了传输线导纳确定原则和松弛迭代方法,并且使用并行计算技术来实现TLM的加速求解。将改进的TLM应用于直动式继电器温度场的求解中,通过与商用软件COMSOL以及Newton-Raphson(NR)迭代法的求解结果对比,验证了算法的精度。相比于传统的NR迭代法,TLM能够取得稳定的求解效率提升。Higher solution accuracy and solution efficiency of the temperature field simulation are required,to satisfy the optimization design and the development of multi-physical field coupling simulation of high-power electrical apparatus.The transmission line iteration method(TLM) is used to accelerate the finite element analysis of three-dimensional nonlinear heat conduction problem.In order to further improve the efficiency of TLM,the transmission line admittance determination principle and relaxation iteration method are proposed.The parallel computing technology is used to realize the acceleration of TLM.The improved TLM is applied to solve the temperature field of the direct-acting relay,and the accuracy of the algorithm is verified by comparing the solution results with commercial software COMSOL and Newton-Raphson iteration.Compared with the traditional Newton-Raphson iteration,TLM can achieve a stable solution efficiency improvement.

关 键 词：有限元分析 传输线法 并行计算 继电器 温度场 

分 类 号：TM764[电气工程—电力系统及自动化]