电力系统保护与控制2017，Vol.45Issue(6)：94-100,7.DOI:10.7667/PSPC160447
基于可控等效输出阻抗的微网逆变器并联特性研究
Research on microgrid inverters parallel characteristic based controllable equivalent output impedance
摘要
Abstract
In view of the poor power sharing of parallel inverters using traditional droop control and the bus voltage and frequency deviation problem in the low-voltage microgrid,the circulating current and power output characteristics of parallel inverters are analyzed,and a control strategy for parallel inverters based controllable equivalent output impedance is proposed.The strategy makes the inverter has a precise controllable equivalent output impedance and has the basic characteristic of the virtual synchronous generator,and the frequency and phase of the equivalent voltage source are capable of self-synchronization function,then it achieves power sharing indirectly without using power ring and has the ability to inhibit the circulating current.R eliminates the bus voltage and frequency deviation problem by designing the secondary voltage regulation control.The simulation results verify the feasibility and effectiveness of the proposed control strategy.关键词
逆变器并联/可控等效输出阻抗/自同步/功率均分/电压二次调节Key words
parallel inverters/controllable equivalent output impedance/self-synchronization/power sharing/secondary voltage regulation引用本文复制引用
赵济乾,赵晋斌,孙锋,屈克庆,李芬..基于可控等效输出阻抗的微网逆变器并联特性研究[J].电力系统保护与控制,2017,45(6):94-100,7.基金项目
上海市自然科学基金(16ZR1413000) （16ZR1413000）
上海绿色能源并网工程技术研究中心(13DZ2251900)This work is supported by Natural Science Foundation of Shanghai (No.16ZR1413000) and Shanghai Engineering Research Center of Green Energy Grid-connected Technology (No.13DZ2251900). （13DZ2251900）
