超级电容器恒压充电的控制策略研究  

Constant Voltage Control Scheme of Super Capacitor Charging

作　　者：张阐娟 文小玲[1] 李康康 季媛媛[1] 张双华[1] 

机构地区：[1]武汉工程大学电气信息学院,湖北武汉430205 [2]郑州安图生物工程有限公司,河南郑州450016

出　　处：《武汉工程大学学报》2016年第1期82-87,共6页Journal of Wuhan Institute of Technology

基　　金：国家自然科学基金项目(51207117)

摘　　要：采用超级电容器电压外环、电感电流内环的双闭环控制策略,以提高超级电容器充电控制系统的可靠性,首先利用状态空间平均法建立以BUCK变换器为主电路的超级电容器储能系统的小信号线性模型;然后,基于MATLAB/SIMULINK仿真工具箱构建了完整的超级电容器储能系统仿真模型,并对单闭环充电控制方式和双闭环充电控制方式下的超级电容器电流和电压波形进行了仿真分析.结果表明两种充电控制方式下,超级电容器的端电压都能达到预期的稳定电压12 V,但单闭环控制方式下的充电电流高达120 A,远远超过预期的稳态电流12 A,而双闭环控制方式下的最大充电电流可控制在18 A以内,稳态电流为预期的12 A,为超级电容器充电控制提供了新的思路.We proposed a double closed-loop control strategy with external voltage-loop and inner current-loopfor improving the reliability of the super-capacitor charging control system. Firstly the small signal linear modelof the super capacitor energy storage system（SCESS）with BUCK converter as the main circuit was constructedby the state space averaging method. Then,the simulation model of SCESS was established by using MATLAB/SIMULINK software,and the current and voltage waveforms of the super capacitor were analyzed in the singleclosed-loop control mode and double closed-loop control mode. The results show that the terminal voltage of thesuper capacitor can reach the expected stable voltage of 12 V under the both control modes. However,the chargingstable current of the super capacitor is up to 120 A which is far more than the expected stable current 12 A andprobably destroys the components of the SCESS in the single-closed loop control mode;the maximum chargingcurrent can be controlled within 18 A and the steady state current does not exceed 12 A in the double- closedloop control mode,which provides a new thought for the super capacitor charging control.

关 键 词：超级电容器 状态空间平均法 电压控制 峰值电流控制 

分 类 号：TM531.4[电气工程—电器]