电工技术学报2016，Vol.31Issue(21)：12-20,9.
基于精确线性化理论的超级电容储能系统的非线性控制算法
Nonlinear Control Algorithm for Super Capacitor Energy Storage System Based on Exact Linearization Theory
摘要
Abstract
In view of the nonlinear characteristics of super capacitors and DC-DC converters, a nonlinear control algorithm for the super capacitor energy storage system is designed. Through the analysis on working states of the circuit, the affine nonlinear model is established. The relationship between the circuit state and the duty cycle is deduced by using the exact feedback linearization theory. Furthermore, the control algorithm is designed and its stability of internal dynamics is proved. Then the control targets of charging with constant current and discharging with constant voltage are achieved. Simulation model is constructed in the Matlab/Simulink platform. The effectiveness of the control algorithm is confirmed. Then, the difference between the nonlinear control algorithm and the PI control method is compared by experimental circuit building in laboratory. Results show that, compared with the traditional PI algorithm, using nonlinear control law in the super capacitor energy storage system can significantly improve dynamic performance and ensure stability.关键词
超级电容/储能系统/非线性控制/状态变量反馈/精确线性化Key words
Super capacitor/energy storage system/nonlinear control/state variables feedback/exact linearization分类
信息技术与安全科学引用本文复制引用
李轩,李永丽,常晓勇..基于精确线性化理论的超级电容储能系统的非线性控制算法[J].电工技术学报,2016,31(21):12-20,9.基金项目
国家重点基础研究发展计划(973计划)(2009CB219704)、国家自然科学基金(51177108)和高等学校博士学科点专项科研基金(20110032110066)资助项目。 （973计划）
