摘要
不间断电源(UPS)工况复杂,负载种类繁多。不平衡负载和非线性负载均会对输出电压的波形质量产生影响。此处分析了三相四线制逆变器的数学模型和负载特性,针对不同类型负载对输出电压扰动的影响设计了重复控制器,针对传统的重复控制器存在动态响应过慢的问题,改进了重复控制器的结构,使系统的动态响应提高。搭建了6 kVA的三相四线制逆变器平台,通过仿真和实验验证了该控制策略的可行性。
Uninterruptible power supplies(UPS) have complex operating conditions and a wide variety of loads.Both unbalanced loads and non-linear loads have an effect on the waveform quality of the output voltage.The mathematical model and load characteristics of three-phase four-wire inverter are analyzed.The repetitive controller is designed for the influence of different types of loads on output voltage disturbance.For the traditional repetitive controller,the dynamic response is too slow,thus improve the structure of the repetitive controller,so that the dynamic response of the system is improved.A 6 kVA inverter platform is built,and the feasibility of the control strategy is verified by simulation and experiment.
作者
陈磐
肖岚
黄军
陈海涛
CHEN Pan;XIAO Lan;HUANG Jun;CHEN Hai-tao(Jiangsu Key-Laboratory of New Energy Generation and Power Conversion,Nanjing University of Aeronautics&Astronautics,Nanjing 210016,China;不详)
出处
《电力电子技术》
CSCD
北大核心
2021年第1期5-8,共4页
Power Electronics
关键词
逆变器
重复控制器
不间断电源
inverter
repetitive controller
uninterruptible power supply
