摘要
为给线圈式电磁发射装置提供可耐高压的高强度电磁驱动线圈,对驱动线圈的实时电磁力、结构特性及制作方法进行了研究。首先采用ANSOFT软件对线圈绕组时变电磁力进行分析。结果表明,径向电磁力集中到线圈截面的中心右侧,轴向电磁力集中在线圈截面中心偏下部,线圈径向电磁力远大于轴向电磁力,因此litz线制作较带状线圈更适合制作高强度线圈。然后采用ANSYS软件对线圈的接触特性进行分析,结果表明,绕组受到径向电磁力往线圈外侧挤压,形变集中在绕组外侧;上下层绕组沿轴向方向向中间挤压;总电磁力的作用使线圈绕组向外部封装的中间处挤压。设计并制作了高强度驱动线圈,测试结果表明:该线圈满足耐高压、高强度的应用要求。研究结果可为高强度线圈的制备提供理论依据和指导。
To prepare driving coils that can withstand great force and high voltage for coilguns, we studied the real-time electromagnetic force （EMF）, mechanical property, and manufacture of driving coil. Firstly, we calculated and analyzed real-time EMF of driving coil and its windings using ANSOFT software, which indicates that radial EMF concentrates on the right flank section of coil, while axial EMF concentrates on the underside section of coil, and the radial EMF is much bigger than axial EMF. Hence, litz wires are preferred to manufacture driving coil than ribbon wires. Then, we used the ANSYS software to analyze the contact property of driving coil. It is shown that, in the radial direction, windings with- stand EMF that pushes them outwards from coil. Meanwhile, the upper and bottom windings are squeezed towards the middle place of coil, and total force makes the coil deformation to concentrate on the middle part of outer packaging of coil. According to obtained results, we designed, made and tested a high strength driving coil. The results indicate that the coil can withstand high voltage and large force that meets the demands of application. The design could be referred by other high-strength coil＇s design as theoretical basis and guidance.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2014年第4期1186-1193,共8页
High Voltage Engineering
基金
中国博士后基金(2012M521465
2013T60737)~~
关键词
电磁驱动线圈
电磁力
磁-结构仿真
接触分析
线圈式
电磁发射装置
electromagnetic coil
electromagnetic force
magnetic-structural simulation
contact analysis
coilgun
elec- tromagnetic launcher
