高压电器2024，Vol.60Issue(5)：84-91,8.DOI:10.13296/j.1001-1609.hva.2024.05.011
高功率Tesla变压器次级绝缘结构电场分析与设计
Electric Field Analysis and Design of Secondary Insulation Structure of High Power Tesla Transformer
摘要
Abstract
High power Tesla transformer is widely used in the area of pulsed power technology,but its secondary coils is in a non-uniform electric field,and the uneven distribution of inter-turn voltage of the coils is likely to lead to inter-turn insulation breakdown.In this paper,a set of dual magnetic core Tesla transformer is designed,an electric field simulation model of the secondary coil is set up by finite element method and the inter-turn electric field distri-bution is analyzed.Aiming at the problem of uneven distribution of inter-turn voltage,the two ends of the secondary coil are double-wired and a shielding ring is added to improve the electric field distribution so to keep the maximum field strength be less than the breakdown field strength of the tiny oil gap and assure insulation safety of the second-ary coil of the transformer.It is found through simulation analysis that the double-wired winding of head and tail ter-minals can improve electric field distribution,but the number of double-wired turns shall not be too much.After addi-tion of the shielding ring to the high-voltage terminal,the field strength distribution is more uniform,the maximum field strength is reduced by 62.9%,the maximum field strength is much lower than the breakdown field strength of the oil gap under the pulse condition,which can meet the insulation design requirements.关键词
高功率Tesla变压器/电场分布/双线并绕/屏蔽环/绝缘设计Key words
high power Tesla transformer/electric field distribution/double-wire parallel winding/shield ring/insulation design引用本文复制引用
蔡宛辰,金童,沈骏峰,王佳栋,江进波..高功率Tesla变压器次级绝缘结构电场分析与设计[J].高压电器,2024,60(5):84-91,8.基金项目
国家自然科学基金青年基金(51707105) （51707105）
强脉冲辐射环境模拟与效应国家重点实验室开放基金(SKLIPR2008). Project Supported by National Natural Science Youth Foundation of China(51707105),Open Foundation of State Key Laboratory of Intense Pulsed Radiation Simulation and Effect(SKLIPR2008). （SKLIPR2008）
