基于有限元的单相双柱变压器直流偏磁分析  

Finite Element Method-based Analysis of DC Bias of Single-phase Two-legged Transformer

作　　者：马洪亮 MA Hongliang

机构地区：[1]中铁电气化局集团有限公司设计研究院

出　　处：《电气化铁道》2023年第1期48-51,共4页Electric Railway

摘　　要：采用有限元软件建立单相双柱双绕组变压器磁场模型和电路模型,通过磁路耦合仿真计算变压器在绕组接地端未添加直流电流和添加直流电流情况下的激磁电流,并利用傅里叶变换进行谐波频谱分析,对比单端侵入不同直流分量下变压器励磁电流与谐波频谱的变化规律,为研究变压器在不同直流电流侵入下的铁磁特性、空载损耗、铁心振动等奠定基础。The magnetic field model and circuit model of single-phase two-legged double-winding transformer are established by using finite element software.The excitation current of the transformer without adding of DC current and with adding of DC current at the winding grounding terminal is calculated by magnetic circuit coupling simulation,and the harmonic spectrum analysis is carried out by using Fourier transform to compare the change rule of transformer excitation current and harmonic spectrum under different DC components of single-end intrusion,it lays a foundation for studying the ferromagnetic characteristics,no-load loss and core vibration of transformer under different DC current invasion.

关 键 词：有限元 直流偏磁 激磁 

分 类 号：U224.3[交通运输工程—道路与铁道工程]