用于脉冲叠加器的LLC谐振充电源的研究

摘要

In order to better meet the charging demand of pulse adders with series core structure, a compact full bridge LLC converter charging source with high switching frequency was designed, and a method of additional balancing winding was proposed to improve the inconsistent charging voltage of each stage storage capacitor. After describing and analyzing the structure design, working process, and parameter design of the converter, an experimental platform for a 10-stage pulse adder and a resonant converter charging source was built. The experimental results show that, the soft-switching function is realized when the switching frequency is 100 kHz and the charging voltage consistency of each stage capacitor can be effectively improved by adding balanced windings. In addition, by adjusting the charging voltage of the converter charging source, the pulse adder can output 8 kV high-voltage pulses with a pulse width of 2 μs and a frequency of 10 kHz, which can meet the charging demand of the pulse adder.%为了更好地满足串联磁芯结构的脉冲叠加器充电需求，设计了一款结构紧凑、开关频率较高的全桥LLC变换器充电源，并提出附加平衡绕组的方法，解决了每级储能电容充电电压幅值不一致的问题。在对变换器的结构设计、工作过程、参数设计进行了阐述分析后，搭建了10级脉冲叠加器及谐振变换器充电源实验平台。实验表明：该充电源在开关频率100 kHz时实现了软开关功能；使用附加平衡绕组的方法能够有效提高每级电容充电电压的一致性；通过调节变换器充电源的充电电压，脉冲叠加器能稳定输出幅值8 kV、脉冲宽度2 μs、频率10 kHz的高压脉冲，满足脉冲叠加器的充电需求。