光伏并网逆变器的改进模型预测控制研究  

Research on Improved Model Predictive Control for PV Grid-connected Inverter

作　　者：周科 刘伯鸿[1] 李茂青[1] ZHOU Ke;LIU Bohong;LI Maoqing(School of Automation and Electrical Engineering,Lanzhou Jiaotong University,Lanzhou 730070,Gansu,China)

机构地区：[1]兰州交通大学自动化与电气工程学院,甘肃兰州730070

出　　处：《电气传动》2018年第11期67-70,共4页Electric Drive

基　　金：国家自然基金地区项目(61164010)

摘　　要：针对传统有限控制集模型预测控制(FCS-MPC)的电流振荡与延时问题,提出一种改进FCSMPC。用2个相邻电压矢量和零电压矢量在1个采样周期内共同作用电路,消除电流振荡。为了减小开关频率,将电压矢量的作用先后排序得到最优电压矢量序列(OVVS)。此外,采用2个采样周期预测值对计算和采样带来的延时进行补偿。最后,仿真结果验证了提出的改进FCS-MPC的有效性。In order to deal with the problems of current oscillation and delay of the conventional FCS-MPC,an improved FCS-MPC was proposed.Within a sampling period,circuit was excited by using two adjacent voltage vectors and zero voltage vector jointly to eliminate current oscillation.In order to reduce the switching frequency,the voltage vector sequence to excite circuit was arranged.Therefore the OVVS was obtained.Besides,the two sampling period forecast values were utilized to compensate the delay caused by calculation and sampling.Finally,the results prove the validity of the proposed improved FCS-MPC.

关 键 词：有限控制集模型预测控制 最优电压矢量序列 电流振荡 延时补偿 

分 类 号：TM464[电气工程—电器]