摘要
针对集成的三相PWM整流/逆变系统,提出了一种基于李亚普诺夫直接法的一体化瞬时功率控制策略.主要思想是:选择合适的整流器状态变量构造一个李亚普诺夫函数,从李亚普诺夫渐近稳定性出发,设计两个控制变量用于整流器的控制.该策略将逆变器的瞬时功率动态自然地嵌入到整流器的控制当中,在保证整流器渐近稳定的同时,使得三相PWM整流/逆变系统的直流储能电容可以大大减小.在Matlab/Simulink环境下对采用这种控制策略的系统进行了仿真,仿真结果验证了该策略的有效性.
A Lyapunov-based instantaneous power control scheme for an integrated three-phase PWM rectifier-inverter is proposed, on the basis of the idea that some proper state variables of rectifier are selected to construct a Lyapunov function. According to the theory of Lyapunov＇s gradual stability, two control variables are designed for the control of rectifier. The instantaneous power dynamics of inverter is naturally embedded in the control of rectifier and the global stability of rectifier is guaranteed due to Lyapunov-based direct method. A very small dc-link capacitor is satisfied to maintain the good performance for integrated rectifier-inverter. The effectiveness of the proposed control scheme verified is by the simulation results in Matlab/Simulink environment.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2006年第5期92-94,共3页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
十五国防预研项目
