负载阻抗对直线变压器驱动源传递效率的影响
Transfer efficiency of linear transformer driver affected by load impedance
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摘要: 从理论及模拟仿真分析了负载阻抗变化对双线型脉冲形成网络直接给负载放电，以及通过直线变压器(LTD)给负载放电时电压传递效率、能量传递效率以及峰值功率传递效率的影响。基于设计加工的LTD单元模块实验平台，通过调节水电阻负载阻值进行了一系列实验。实验研究结果表明：当负载阻值基本与双线型脉冲形成网络的阻抗2.5 Ω相匹配时，可获得最大能量传递效率80.5%，此时电压传递效率、峰值功率传递效率分别为84.1%，73.9%；增大负载阻抗至3.4 Ω时，可实现99.0%的电压传递效率，而能量传递效率、峰值功率传递效率仅减小3.5%，0.3%。根据对实验结果的分析可知，通过增大负载阻抗可以有效地提高系统的电压传递效率，且当负载阻抗变化不是太大时，对系统的能量传递效率以及峰值功率传递效率影响较小。Abstract: Through the theoretical analysis and simulation, the effects of impedance on the voltage transfer efficiency, energy transfer efficiency and peak power transfer efficiency when pulse forming network (PFN) discharges to the load directly and through the linear transformer driver (LTD) are discussed. Based on the one-stage LTD module, a series of experiments are carried out by changing the impedance of the load. The experiment show that the maximal energy transfer efficiency of 80.5% is achieved when the impedance of the load equals to the 2.5 Ω impedance of the PFN, with voltage transfer efficiency and peak power transfer efficiency being 84.1% and 73.9% respectively. The voltage transfer efficiency would increase to 99.0% when the impedance of load is 3.4 Ω, with voltage transfer efficie
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Key words:
- load impedance /
- transfer efficiency /
- linear transformer driver /
- pulse forming network /
- compact
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