摘要
绕组交叉换位对高频变压器漏磁场影响很大,进而对绕组电磁力产生影响。为了明确不同交叉换位结构对高频变压器漏磁场和电磁力的影响规律,基于有限元分析方法,文中首先对无交叉换位、部分交叉换位和完全交叉换位方式下高频变压器的导体区域电流密度、铁心窗口区域漏磁场强度进行计算,将仿真结果与实验结果进行对比,验证了有限元模型的有效性。然后,计算了不同绕组布置方式下的绕组电磁力。结果表明:部分交叉换位后邻近效应削弱,漏磁场强度和电磁力降低一半,完全交叉换位后邻近效应几乎全部消除,漏磁场强度和电磁力为无交叉换位时的1/4。上述工作为高频变压器绕组结构设计和提升绕组抗变形能力具有一定指导意义。
The cross transposition of the winding has a great influence on the leakage magnetic field of the high-frequency transformer which,in turn,affects the electromagnetic force of the winding. For defining the influence of different cross transposition structure on the leakage magnetic field and electromagnetic force of the high frequency transformer and on the basis of finite element analysis method,the current density at the conductor area and the leakage magnetic field strength at the core window area of the high frequency transformer are calculated at such three modes as no cross transposition,partial cross transposition and complete cross transposition. The effectiveness of the finite element model is verified through comparison of the simulation result and the experimental result. Then,the electromagnetic force of the winding under different layouts is calculated. The results show that the proximity effect after partial cross transposition is weakened and the leakage magnetic field strength as well as electromagnetic force are reduced by half. While,the proximity effect after the complete cross transposition is almost completely eliminated. And the leakage magnetic field strength and electromagnetic force are 1/4 of that at no cross transposition. The above work has certain guiding significance for the design of high-frequency transformer winding structure and improving the anti-deformation ability of the winding.
作者
陈彬
梁旭
肖乔莎
刘子怡
张楠
詹东博
CHEN Bin;LIANG Xu;XIAO Qiaosha;LIU Ziyi;ZHANG Nan;ZHAN Dongbo(College of Electrical Engineering&New Energy,China Three Gorges University,Hubei Yichang 443002,China;Hubei Provincial Engineering Technology Research Center for Power Transmission Line,China Three Gorges University,Hubei Yichang 443002,China)
出处
《高压电器》
CAS
CSCD
北大核心
2022年第2期95-102,共8页
High Voltage Apparatus
基金
湖北省输电线路工程技术研究中心开放课题(2019KXL08)。
关键词
高频变压器
绕组交叉换位
漏磁场
电磁力
有限元法
high-frequency transformer
cross transposition of winding
leakage magnetic field
electromagnetic force
finite element method
