光伏并网逆变有限状态模型预测直接功率控制  

Finite State Model Predictive Direct Power Control of Grid-connected Inverters for PV Systems

作　　者：陈静[1,2] 向紫欣[1] 邓奕 

机构地区：[1]武汉理工大学自动化学院,湖北武汉430070 [2]汉口学院电子信息工程学院,湖北武汉430212

出　　处：《电气传动》2017年第11期41-44,54,共5页Electric Drive

基　　金：湖北省过程控制与先进装备制造协同创新中心2016年度重点课题(HX2016A1001)

摘　　要：针对并网逆变器传统直接功率控制存在开关频率不固定、输出滤波器复杂和采样频率高等问题,在构建光伏并网逆变器有限状态直接功率控制的预测模型的基础上,提出一种光伏并网逆变器的有限状态模型预测直接功率控制方法。对系统输出有功和无功进行预测,根据代价函数,选择使输出功率脉动最小的电压矢量并作用于下一采样周期。此外,对系统进行一拍延时补偿,并实现功率的动态调节。仿真和实验验证了所提方法的有效性。For the problems of unfixed switching frequency,complicated design of output filter and high sampling frequency in the traditional direct power control of grid-connected inverters,a finite state model predictive direct power control method was proposed which was based on constructing prediction model of the finite state direct power control of grid-connected inverter for PV system. In the proposed method the instantaneous active and reactive output power were predicted,according to the cost function,the voltage vector,which minimizes the output power ripple was selected and applied to the next sampling period. Besides,a delay compensation scheme was designed for the system,and the dynamic power adjustment was realized. Simulation and experimental are given to validate the effectiveness of proposed solution.

关 键 词：并网逆变器 有限状态 模型预测直接功率控制 延时补偿 

分 类 号：TM422[电气工程—电器]