Performance test and analysis based on solid-state high repetitive frequency LTD
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摘要: 全固态直线型变压器驱动源(LTD)是具有独特性能的新型高重频脉冲功率发生器。针对LTD的基础特性进行了较详细的实验研究。测量内容包括输出脉冲宽度与控制信号的关联、LTD模块上的信号延迟及其分散性，以及不同条件下LTD系统的能量效率分析。实验结果使我们对LTD取得了更加详细和深入的认识，同时为进一步改善和提高LTD脉冲功率发生器的技术水平提供了重要的参考数据。Abstract: Solid state linear transformer driver(LTD) is a new high frequency pulsed power generator with unique performance. This article presents an experimental research based on the basic characteristics of LTD in detail. The measurement includes three parts: the correlation between the output pulsed width and the control signal pulsed width, the signal delay and dispersion on the LTD module, and the energy efficiency analysis of the LTD system under different conditions. The result of the experiment provides us a more detailed and in-depth understanding of LTD. Simultaneously, it gives important reference data for enhancing and improving the technical level of LTD.
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图 2 LTD脉冲发生器实际结构和截面结构
Figure 2. Actual LTD module and cross-sectional structure of its unit circuit
图 3 不同充电电压时得到的负载电压波形
Figure 3. Output voltage waveforms obtained with different charging voltages
图 4 不同脉宽的门级信号下其负载电压波形
Figure 4. Output voltage waveforms obtained with different pulse lengths of control signals
图 5 模块上一个开关单元的信号传输路径
Figure 5. Signal transmission route of unit circuit based on module
图 7 不同模块数下负载效率和等效效率
Figure 7. Output efficiency and equivalent efficiency obtained with different module numbers
表 1 固态LTD模块上的主要器件和数量
Table 1. Major devices used on solid-state LTD module
device manufacture model specification number MOSFET IXYS IXFT6N100F 1 kV, 6 A(DC) 24 driver IC Microchip MCP1407 4.5~18 V, 6 A(peak) 25 capacitor Murata GRM55DR73A 1 kV, 100 nF 72 magnetic core Sichuan Liyuan Electronics 1K107 130 mm×86 mm×5 mm 1 optic receiver Hitachi DR9300 DC~50 Mb/s 1 diode Vishay UF5408 1 kV, 3 A(DC) 8 
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