三端口脉冲功率解耦-整流器利用功率解耦的控制思想，有效消除了以机载雷达为代表的脉冲功率型负载对供电系统造成的不利影响，其采用的传统电压外环比例积分控制在脉冲频率改变时难以做到最优动态控制效果。针对脉冲频率突降时由于功率反向传输导致的电压波动问题，从三端口整流器功率传输的角度分析，提出了一种基于功率重新分配的电容能量平衡控制（CEBC）算法。指出脉冲负载频率突降与突增的不同之处，与频率突增不同，突降过程要减小交流源输出功率，过低的功率在影响动态控制效果的同时还会造成稳态端口电压波动。为此从动态过程功率传输的角度对CEBC的具体实现方式进行理论分析，通过仿真对比了不同功率分配结果的电压控制效果，确定两级式结构具有最佳的动态控制效果。最后通过实验验证了所提方案的可行性。实验结果表明，采用两级式功率传输的CEBC方法可以有效减少系统响应时间，提升动态响应能力。

The three-port pulse power decoupling rectifier effectively eliminates the adverse impact of pulse power loads such as airborne radar on the power supply system by utilizing the control concept of power decoupling. The traditional voltage outer loop proportional integral control adopted is difficult to achieve the optimal dynamic control effects when the pulse frequency changes. To address the voltage fluctuation problem caused by power reverse transmission during sudden drop of pulse frequency， a Capacitive Energy Balance Control （CEBC） algorithm based on power redistribution is proposed from the perspective of power transmission of three-port rectifiers. The differences between sudden drops and sudden increases in pulse load frequency are pointed out. Unlike sudden frequency increases， it is necessary to reduce the output power of the AC source during sudden drops of frequency. Excessively low power not only affects the dynamic control effect， but also causes fluctuations of steady-state port voltage. Therefore， from the perspective of dynamic process power transmission， the specific implementation of CEBC is theoretically analyzed， and the voltage control effects of different power allocation results are compared through simulation. It is determined that the two-stage structure has the best dynamic control effect. Finally， the feasibility of the proposed solution is verified through experiments. Experimental results show that the CEBC method using two-stage power transmission can effectively reduce the system response time and improve the dynamic response capability.