在对Marx发生器和直线型变压器驱动源(LTD)电路拓扑结构及等效参数进行分析对比的基础上,结合两种电路拓扑结构的技术特点,提出了基于Marx基本回路的混合模式LTD模块构想.在混合模式LTD模块中,每个基本回路是一个多级的Marx发生器回路,回路中只有前一级或几级开关需要外部触发,而后级开关工作在自击穿模式.计算分析表明:混合模式LTD模块设计可以有效降低LTD系统对多路同步触发的要求；独立回路式结构可提高整个混合模式LTD模块的可维护性；回路间耦合触发的方式可提高整个混合模式LTD的工作可靠性.最后,还探讨了回路内阻、磁芯损耗及Marx发生器回路中后级自击穿开关抖动对混合模式LTD模块参数设计的影响.%The paper proposes a mixed-mode LTD(linear transformer driver) module. Each brick of the mixed-mode LTD module is a multi-stage Marx circuit, where only the switches of the first several stages need external trigger, and the others work in self-breakdown mode. The analysis indicates that, the mixed-mode LTD module can effectively reduce the demand for external trigger) the independent structure of each brick can improve the maintainability of the module, and coupling trigger between Marx bricks can improve the reliability. The paper also discusses the effects of circuit resistance, magnetic core loss and self-breakdown switch jitter on the module's parameter design.
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