摘要
针对多个逆变器并联运行时产生的系统环流问题,提出了基于虚拟同步发电机的逆变器并联环流抑制策略.首先采用虚拟同步发电机算法,可以使得逆变器的并联系统稳定,其次在电压电流双闭环控制环节中加入虚拟阻抗来模拟大电感,既可以达到抑制环流的目的,又可以有效地抑制系统输出端电压的跌落.通过搭建仿真模型并进行了仿真研究.仿真结果表明该控制策略对系统的环流有明显的的抑制作用.
Aiming at the problem of system circulation when multiple inverters are running in parallel,this paper proposes a strategy to suppress the circulation of inverter in parallel based on virtual synchronous generator.Firstly,the virtual synchronous generator algorithm is adopted to stabilize the parallel system of the inverter.Secondly,virtual impedance is added to the voltage and current double closed-loop control link to simulate large inductance,which can not only restrain the circulation,but also effectively restrain the voltage drop of the output terminal of the system.The simulation model is built and studied.The simulation results show that the control strategy can restrain the circulation of the system.
作者
吕文齐
张春
金鹏
李智
LV Wenqi;ZHANG Chun;JIN Peng;LI Zhi(Deparment of Electrical Engineering,Anhui University of Technology and Science,Anhui Provincial Key Laboratory of Electric and Control,241000,Wuhu,Anhui,PRC)
出处
《曲阜师范大学学报（自然科学版）》
CAS
2020年第3期95-98,共4页
Journal of Qufu Normal University(Natural Science)
基金
安徽省高校自然科学研究重大项目(KJ2015ZD06).
关键词
逆变器并联
电压电流双闭环控制
虚拟同步发电机
虚拟阻抗
环流抑制
inverter parallel
voltage and current double closed-loop control
virtual synchronous generator
virtual impedance
circulation inhibition
