单相逆变器双环+时滞的复合控制方法研究  

Research on Dual Loop+Time Delay Hybrid Control in Single-phase Inverter

作　　者：袁绍军[1] 郭金智 尹兆磊 潘立巍 YUAN Shao-jun;GUO Jin-zhi;YIN Zhao-lei;PAN Li-wei(State Grid JibeiElectric PowerResearch Institute,Chengde067000,China)

机构地区：[1]国网冀北电力有限公司承德供电公司,河北承德067000

出　　处：《电力电子技术》2022年第8期32-35,40,共5页Power Electronics

基　　金：国网冀北电力有限公司创新研究项目(B7010621004M)。

摘　　要：为了解决单相逆变器谐振峰引起的残留振荡问题,进一步提升逆变系统的动静态性能,在电压、电流双闭环控制的基础上,引入Posicast时滞控制,构建双环+时滞的复合控制方案。首先建立了单相逆变器的数学模型,推导了双环控制系统中电流控制环路比例控制器和电压控制环路比例积分谐振(PIR)控制器的参数设计方法。在此基础上,揭示传统双环控制无法消除逆变器LC谐振频率处振荡的机理,并采用Posicast时滞控制方法,抑制逆变器的谐振峰,详细讨论了逆变器双环+时滞的复合控制性能。最后针对15 kW单相逆变器系统,进行实验验证,结果表明控制系统动静态性能良好。In order to solve the problem of residual oscillation caused by resonant peak of single-phase inverter and improve the dynamic and static performance of inverter system,Posicast time delay control is introduced to construct a dual loop+time delay composite control scheme.Firstly,the mathematical model of single-phase inverter is established,and the parameter design methods of current control loop proportional controller and voltage control loop proportional integral resonance(PIR)controller in dual loop control system are deduced.The problem that the dual loop control cannot suppress the oscillation at the LC resonant frequency of the inverter is analyzed.Posicast control is used in current control loop to eliminate the residual oscillation in control system.And then,the compound control performance of inverter with dual loop and time delay is discussed in detail.At last,a 15 kW single-phase inverter prototype is built to verify the proposed control strategy by the experiment.The results show the dynamic and static performance are good for inverter.

关 键 词：单相逆变器 比例控制器 比例积分谐振控制器 

分 类 号：TM464[电气工程—电器]