摘要
光伏离网发电系统具有快速应变、抗干扰、适应性强、实用性强等优点,被广泛应用于电力系统、通信电源系统、铁路供电系统等场所中。离网逆变器有着较为严苛的动静态等性能要求,基于其严格的动静态性能要求,设计了10 kW的离网逆变器系统,给出系统中核心元件的参数设计方法,采用极点配置法设计电流-电压内外环的参数,同时采用了前馈补偿控制法,加速了系统响应速度,减小了偏差,且提高了离网逆变发电控制系统的稳定性与准确性,最后基于PSIM2021a仿真软件构建了离网光伏逆变器系统的仿真模型,对所搭建的电路系统进行了仿真研究,各项性能测试结果表明,所设计的基于极点配置法的单相全桥光伏离网逆变器系统动态与静态特性良好,抗干扰能力较强,达到了设计要求。
Photovoltaic off-grid power generation system has the advantages of rapid strain and anti-interference,strong adaptability and practicability,and is widely used in power systems,communication power systems,railway power supply systems and other places.The off-grid inverter has strict dynamic and static performance requirements.Based on its strict dynamic and static performance requirements,a 10 kW offgrid inverter system is designed,and the parameter design method of the core components in the system is given.The pole-assignment method is used to design the parameters of the current-voltage inner and outer loops.At the same time,the feedforward compensation control method is used to accelerate the response speed of the system,reduce the deviation,and improve the stability and accuracy of the off-grid inverter power generation control system.Finally,the simulation model of the off-grid photovoltaic inverter system is built based on the PSIM2021a simulation software,and the simulation research is carried out on the built circuit system.The performance test results show that the designed singlephase full-bridge photovoltaic off-grid inverter system based on pole assignment method has good dynamic and static characteristics,strong anti-interference ability and meets the design requirements.
作者
詹新生
王毅
Zhan Xinsheng;Wang Yi(Xuzhou College of Industrial and Technology,Xuzhou,Jiangsu 221140,China)
出处
《机电工程技术》
2023年第10期211-215,共5页
Mechanical & Electrical Engineering Technology
基金
2021年徐州工业职业技术学院科研项目(XZGY2021A002)。
关键词
离网
全桥逆变器
双闭环
前馈
仿真
PSIM
off-grid
full-bridge invert
double closed loop
feedforward
simulation
PSIM
