直线变压器驱动源磁芯能量传递效率
Energy transfer efficiency for magnetic core of linear transformer driver
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摘要: 磁芯是直线变压器驱动源(LTD)的关键部件之一，起着初、次级能量传递和次级电压感应叠加的作用，磁芯的能量传递效率对LTD系统的效率、体积和重量影响显著。对LTD系统中影响磁芯能量传递效率的原因进行了初步的分析，并利用Pspice软件的非线性磁芯模型对磁芯的工作过程和损耗进行了模拟计算，最后对LTD磁芯的能量传递效率进行了初步的实验研究，在工作电压为20 kV时、脉宽约220 ns时，在2.8 Ω负载上获得了大于60%的能量传递效率。Abstract: Magnetic core, an important part of linear transformer driver(LTD), can transfer energy from the primary side to the secondary and add induction voltage on it. So energy transfer efficiency of the core can affect efficiency, volume and weight of LTD system obviously. Factors impacting the energy transfer efficiency are primarily analyzed, and magnetic curve and energy loss are simulated by the non-linear magnetic core model of PSpice. Relative experiments are conducted, which demonstrates that the energy transfer efficiency is above 60% on 2.8 Ω load when the core working under the pulse of 20 kV, 220 ns.
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