直线变压器结构参数对能量传递效率的影响

The Structural Parameter of LTD Effects on the Energy Efficinecy

介绍了影响LTD能量传递效率的主要因素,通过模拟计算分析了等效涡流损耗电阻、励磁电感对脉冲形成网络通过LTD放电的影响。设计加工了一套可用于测量脉冲形成网络通过磁芯对负载放电时LTD初、次级间能量传递效率的试验平台,基于该平台通过调整磁芯有效截面积、平均磁回路长度等条件进行了一系列实验研究。实验研究结果表明,在脉冲宽度300ns、匹配负载2.5欧姆条件下磁芯有效截面积与磁回路长度比值增大两倍,LTD初、次级能量传递效率将增加6个百分点,与理论分析值基本吻合。根据对实验结果的分析可知LTD结构参数优化设计中,在磁芯截面积需求一定的情况下,减小磁芯的平均磁回路长度可以有效提高系统的能量传递效率。

This paper introduce the primary factor effect on the energy efficiency of linear transformer driver(LTD). Through the PSpice simulation, resistor representing the core losses and magnetizing inductance affected on the pulse which output by forming network after LTD was discussed. A test stand was developed to measure the energy efficiency of LTD. Based on the test stand, a series of experiment was carried out by changing mean length magnetic path and effective core area. The experimental results indicate that the energy efficiency of LTD would increase 6% when the ratio of mean length magnetic path to effective core was double based on the pulse forming network with an impedance 5Ω, pulse width 300 ns. According to the experimental results, decrease the mean length magnetic path will increase the energy efficiency of LTD when the effective core area was fixed on.