基于滑模观测器的单相电流源控制策略  

On a Single-phase Current Source Control Strategy Based on Sliding Mode Observer

作　　者：陈弈甫 吴一庆[2] 张彦虎 CHEN Yifu;WU Yiqing;ZHANG Yanhu

机构地区：[1]上海电力大学电子与信息工程学院,上海201306 [2]杭州钱江电气集团股份有限公司,浙江杭州311200 [3]阳光新能源开发股份有限公司,安徽合肥231600

出　　处：《科技创新与应用》2022年第12期47-51,共5页Technology Innovation and Application

基　　金：上海市科技计划项目资助(21ZR1424800)。

摘　　要：传统的单相开关电流源电源使用坐标变换,在dq轴上做PI双电流环控制,但两者之间存在耦合,影响电流的控制精度,且需要较大的滤波电感,降低电源效率。文章提出一种基于滑模观测器的PI+最优控制的LCL型滤波器的单相逆变器控制策略。该策略消除LCL型逆变器固有的低阻尼问题,不增设额外的传感器,提升效率,并且电流的控制精度得到改善,基本消除稳态误差,具有较好的动态性能。仿真与实验结果验证所提方法的有效性。The traditional single-phase switched current power supply uses coordinate transformation and does PI double current loop control on the dq axis,but the coupling between them affects the current control precision,and needs a large filter inductor,which reduces the power supply efficiency.In this paper,a single-phase inverter control strategy of PI+optimal control LCL filter based on sliding mode observer is proposed.This strategy eliminates the inherent low damping problem of the LCL inverter,does not add additional sensors,improves the efficiency,and improves the current control accuracy,basically eliminates the steady-state error,and has better dynamic performance.Simulation and experimental results verify the effectiveness of the proposed method.

关 键 词：LCL型滤波器 单相逆变器 最优控制 滑模观测器 电流控制 

分 类 号：TM464[电气工程—电器]