一种动态电压恢复器的比例加滑模双闭环控制  

Double Closed Loop Proportion and Sliding Mode Control of Dynamic Voltage Restorer

作　　者：陈国璋[1] 卢子广[1] 胡立坤[1] 

机构地区：[1]广西大学电气工程学院,南宁530004

出　　处：《电测与仪表》2012年第5期29-33,共5页Electrical Measurement & Instrumentation

基　　金：南宁市科学与技术开发计划课题

摘　　要：提出一种滤波电容在负载侧的三相H桥型二电平DVR系统拓扑,建立了系统的数学模型,为控制负载端电压恒定,首先将负载端电压的设定值跟踪问题转化负载电压d-q轴误差的认定问题,然后从负载电压与电感电流的关系出发,根据Lyapunov稳定性理论,推导出一种双闭环比例加滑模控制方法,并进行了MATLAB/Simulink控制系统仿真和PI控制的比较研究,仿真结果表明该控制方法的正确性和有效性。Considering the filter capacitor in the side of the load voltage, the mathematical model of the DVR system is established. In order to hold the constant load voltage, the load voltage set pointing issue is translated to the stabilization of the d-q axis error problem firstly; then according to the Lyapunov stable theory, a double closed loop proportion and sliding mode control method is deduced based on the relationship between the load voltage and the inductance current. Then the MATLAB/Simulink control system simulation and PI control is studied, simulation results show that the control method is correct and effective.

关 键 词：滤波电容 负载电压恒定 比例加滑模控制 LYAPUNOV稳定性理论 

分 类 号：TM712.2[电气工程—电力系统及自动化]