基于遗传算法的T型三电平并网逆变器预测控制研究  

Predictive Control of T-Type Three-Level Grid-Connected Inverter Based on Genetic Algorithms

作　　者：付宗见[1] 马国峰[1] 姚存治[1] FU Zongjian;MA Guofeng;YAO Cunzhi(Zhengzhou Railway Vocational&Technical College,Zhengzhou 451460,China)

机构地区：[1]郑州铁路职业技术学院,郑州451460

出　　处：《电子器件》2020年第5期1042-1045,1077,共5页Chinese Journal of Electron Devices

基　　金：河南省科技攻关项目(182102210141)。

摘　　要：针对T型三电平逆变器并网时的电流控制问题,在此提出一种电流预测控制方法,通过建立系统的离散模型,以并网电流跟踪、中点电位平衡作为品质函数,同时将遗传算法引入寻优过程,针对优化过程中的大量计算以及寻优算法过于简单的问题,减小计算量以及寻优误差,选出品质函数值最小的开关管导通方式实现逆变器的控制。实验结果验证了该方法的有效性与正确性。Aiming at the current control problem of T-type three-level inverters connected to the grid,a current predictive control method is proposed.By establishing the discrete model of the system,the current tracking and neutral-point potential balance are taken as the quality functions.At the same time,genetic algorithm is introduced into the optimization process.Aiming at the problems of large amount of calculation in the optimization process and the simplicity of the optimization algorithm,the amount of calculation and search are too reduced.The optimal error is selected to achieve the control of the inverter by selecting the switch-on mode with the smallest quality function value.The experimental results verify the validity and correctness of this method.

关 键 词：电力电子与电力传动 并网电流 模型预测控制 并网逆变器 

分 类 号：TM464[电气工程—电器]