恒功率输入的电容器充电电源算法优化设计  

Optimal design of capacitor charging power supply algorithm with constant power input

作　　者：陈泽宇 刘庆想[1] 李伟[1] Chen Zeyu;Liu Qingxiang;Li Wei(School of Physical Science and Technology,Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]西南交通大学物理科学与技术学院,成都610031

出　　处：《强激光与粒子束》2025年第3期127-133,共7页High Power Laser and Particle Beams

摘　　要：电容器充电电源充电期间输入端的功率随着输出电压的升高而逐渐增加,不仅需要电网提供较大的峰值功率,还会引起较大的电流谐波,基于一种仅采用单级能量变换就实现了恒功率输入恒流输出功能的带辅助储能电容的单级充电方案提出一种新的控制算法,该算法不仅实现了更好的恒功率特性,还解除了对辅助储能电容的限制,可以通过控制储能电容电压提高等效激励电压实现升压功能。利用Matlab/Simulink搭建了恒功率输入的电容器充电的仿真模型,仿真结果显示,在电容器充电400~2000V阶段,实现了输入端的恒功率,同时提升了辅助电容初始电压和负载电容电压。这表明该算法能实现输入端更优良的恒功率特性以及电路的升压功能。During the charging period of capacitor charging power supply,the input power gradually increases with the increase of output voltage,which not only requires the power grid to provide a larger peak power,but also causes larger current harmonics.This paper proposes a new control algorithm based on a single-stage charging scheme with buffered energy storage capacitor that realizes the function of constant power input and constant current output only by using single-stage energy conversion.The algorithm not only achieves better constant power characteristics,but also lifts the restriction on the auxiliary energy storage capacitor.It can improve the equivalent excitation voltage by controlling the voltage of the energy storage capacitor.Matlab/Simulink was used to build a simulation model of capacitor charging with constant power input.The simulation results show that the constant power at the input end is realized during the 400-2000 V stage of capacitor charging,the initial voltage of auxiliary capacitor is increased,and the voltage of load capacitor is increased at the same time.This shows that the algorithm can achieve better input constant power characteristics and circuit boost function.

关 键 词：串联谐振 恒功率 电容器充电 状态平面分析法 功率密度 

分 类 号：TN86[电子电信—信息与通信工程]