Abstract The pulsed power supply of the electromagnetic rail launcher is usually composed of several pulse power units. The trigger strategy of the pulsed power supply must be designed before launching, that is, the capacitor voltage and discharge time sequence of each unit should be set. This process usually requires manual trial and error, which is time-consuming. In order to solve this problem, a semi-analytical model of sequentially-triggered power units is built in this paper. The simulation time was reduced from 37s to 0.19s compared with the model built by commercial software Simplorer. Furthermore, an automatic solution method for the trigger strategy of pulsed power supply is proposed. Using this method, the optimal trigger strategy of power supply can be worked out according to different working conditions, and the ideal current waveform can be obtained. Based on this method, three trigger strategies are obtained, the initial voltage, the number of input modules, the exit velocity and the launch efficiency are compared and analyzed.
Peng Zhiran,Liu Hua,Wang Guangsen等. Trigger Strategy of Pulsed Power Supply Based on the Semi-Analytical Model of Sequentially-Triggered Power Units[J]. Transactions of China Electrotechnical Society, 2021, 36(zk1): 54-61.
[1] 李军, 严萍, 袁伟群. 电磁轨道发射技术的发展与现状[J]. 高电压技术, 2014, 40(4): 1052-1064. Li Jun, Yan Ping, Yuan Weiqun.Electromagnetic gun technology and its development[J]. High Voltage Engineering, 2014, 40(4): 1052-1064. [2] 鲍晓华, 刘佶炜, 孙跃, 等. 低速大转矩永磁直驱电机研究综述与展望[J]. 电工技术学报, 2019, 34(6): 1148-1160. Bao Xiaohua, Liu Jiwei, Sun Yue, et al.Review and prospect of low-speed high-torque permanent magnet machines[J]. Transactions of China Electrotechnical Society, 2019, 34(6): 1148-1160. [3] 王莹, 肖峰. 电炮原理[M]. 北京: 国防工业出版社, 1995. [4] Marshall R A, Ying W.Electromagnetic rail laun- chers: their science and technology[M]. Beijing: China Machine Press, 2004. [5] 苏子舟, 国伟, 张涛. 电磁轨道发射装置技术[M]. 北京: 国防工业出版社, 2019. [6] 吕亚军, 程思为, 王东, 等. 表贴式永磁电机在电枢磁场作用下的定子受力计算模型[J]. 电工技术学报, 2019, 34(15): 3124-3135. Lü Yajun, Cheng Siwei, Wang Dong, et al.The stator force calculation model for surface mounted per- manent magnet motor under the action of armature magnetic field[J]. Transactions of China Electro- technical Society, 2019, 34(15): 3124-3135. [7] 刘治鑫, 王东, 余中军, 等. 基于磁性槽楔修正模型的感应电动机气隙磁场的分布磁路法[J]. 电工技术学报, 2019, 34(15): 3112-3123. Liu Zhixin, Wang Dong, Yu Zhongjun, et al.Distributed magnetic circuit method for calculating air-gap magnetic field of induction motor based on modified model considering the effect of magnetic slot wedges[J]. Transactions of China Electro- technical Society, 2019, 34(15): 3112-3123. [8] Alexeev A V, Baltakhanov A M, Bondaletov V N.Pulse forming network for railgun launcher[J]. IEEE Transactions on Magnetics, 2002, 28(6): 3372-3379. [9] Yu Xinjie, Fan Zhaonan.Simulation and two- objective optimization of the electromagnetic-railgun model considering VSEC resistance and contact resistance[J]. IEEE Transactions on Plasama Science, 2011, 39(1): 405-410. [10] 范昭楠, 于歆杰. 基于过程集成的电磁轨道炮脉冲电源多目标优化[J]. 电工技术学报, 2010, 25(5): 20-24. Fan Zhaonan, Yu Xinjie.Process-integration based multi-objective optimization for pulsed power supply of electromagnetic guns[J]. Transactions of China Electrotechnical Society, 2010, 25(5): 20-24. [11] 张洪海, 程广伟, 国伟, 等. 两种反求电容储能轨道炮时序方法的比较[J]. 火炮发射与控制学报, 2015, 36(1): 77-81. Zhang Hongmei, Cheng Guangwei, Guo Wei, et al.Comparison of two methods on calculating timing sequence of capacitor based railgun[J]. Journal of Gun Launch & Control, 2015, 36(1): 77-81. [12] 胡玉伟, 马萍, 杨明, 等. 一种平稳加速条件下电磁轨道发射系统射前电源时序快速计算方法[J]. 固体火箭技术, 2015, 38(2): 295-300. Hu Yuwei, Ma Ping, Yang Ming, et al.A quick solution method of discharge sequence of pulsed power before launch for electromagnetic rail launcher system with steady acceleration[J]. Journal of Solid Rocket Technology, 2015, 38(2): 295-300.
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