带有高频谐波的电抗器磁场和热场分析  

Ansys Analysis of the Magnetic Field and the Thermal Field of the Core Reactor with High Frequency Harmonic

作　　者：郑婷婷[1] 王冬青[1] 

机构地区：[1]青岛大学自动化工程学院,山东青岛266071

出　　处：《青岛大学学报（工程技术版）》2015年第4期73-77,共5页Journal of Qingdao University(Engineering & Technology Edition)

基　　金：国家自然科学基金资助项目(61104001)

摘　　要：针对通入正弦电流的三相铁心电抗器绕组实际使用中出现高频谐波干扰的情况,本文基于Ansys软件,对电抗器铁心的电磁场和温度场进行研究。利用Ansys有限元软件,建立了电抗器铁心、线圈和空气的实体模型,并编写命令流程序,通过仿真得到铁心磁场分布,同时进行磁热耦合分析,将磁场分析中产生的涡流损耗作为热载荷导入热场分析单元,施加绕组生热率,给出电抗器正常工作状态下铁心温度分布。仿真结果表明,电抗器铁心中,磁感应强度最大值为2.708 27T,主要分布在U相铁心柱与铁心轭连接处;最小值为0.034 115T,主要分布在W相铁心最外层拐角处,而且电抗器铁心柱中间温度高,两边温度低,基本符合设计要求。该研究为三相铁心电抗器结构和工艺设计提供了理论依据。Aiming at solving high frequency harmonic interference into sinusoidal current of three-phase i- ron core reactor winding in practical use, the electromagnetic field and temperature field of the core of the reactor are analyzed based on the Ansys software. Using the finite element software of Ansys, the model of the reactor core, coil and air is established, and the program of the command flow is written, and then the distribution of the magnetic core magnetic field is obtained. Further magnetic thermal coupling analysis is done, the eddy current loss in the magnetic field is introduced as the thermal load and the thermal load is introduced into the thermal field analysis unit, and the temperature distribution of the core under the nor- mal operating condition of the reactor is presented. The simulation results show that the maximum mag- netic induction intensity of the reactor core is 2. 708 27 T, which is mainly distributed in the core of the U phase and the core is 0. 034 115 T, and the minimum value is W, which is mainly distributed in the outer corner of the core,and the temperature of the middle core of reactor is high,and the farther the distance, the lower the temperature. The study provided the basis for the structure and process design of three-phase core reactor.

关 键 词：ANSYS 铁心电抗器 高频谐波电流 磁-热耦合 

分 类 号：TM47[电气工程—电器]