基于频响分析法的脉冲电源与容性负载间匹配电路设计

为克服传统的基于负载匹配法设计的匹配电路存在导致容性负载上脉冲电压上升率明显降低的不足，提高脉冲电源在容性负载下的应用效果，提出了将频响分析用于设计脉冲电源与容性负载问匹配电路的方法．基于此法设计了一种由电感（Lm）支路和与其并联的阻-容（Rm-Cm）串联支路构成的匹配电路，当Lm、Rm和Cm满足使容性负载上的脉冲电压（u2）与脉冲电源输出的脉冲电压（u1）之比（u2/u1）的频响特性，在脉冲电源输出的脉冲电压的有效频谱范围内接近不失真系统频响特性的条件时，可在容性负载上得到既无振荡，且上升率高的脉冲电压．实验验证该匹配电路是有效的．

Design of a matching circuit between pulse power supply and capacitive load based on frequency response analysis

The matching circuit designed by the traditional load matching method has a deficiency that the rising rate of pulse voltage decreases evidently with pulse voltage applied to capacitive load.In order to overcome this deficiency and improve the application effect of pulse power supply while capacitive load is used,a method is put forward in which the frequency response analysis(FRA) is used to design the matching circuit between pulse power supply and capacitive load.Based on this method,a matching circuit which consists of induced(L_m) branch circuit and a branch circuit of a capacitance in series with a resistance(R_m-C_m) is designed.The two branch circuits are in parallel.When L_m,R_m and C_msatisfy the frequency response characteristics of u_2/u_1(where u_1 is the output pulse voltage of pulse power supply,and u_2 is the pulse voltage of capacitive load),and on the condition that the response characteristic has no distortion in the range of the effective spectrum of the output pulse voltage,pulse voltage without oscillation and with fast rising rate can be obtained.The experimental results show that the matching circuit is effective.