电测与仪表Issue(13)：11-15,5.
基于虚拟同步发电机的微网逆变器控制研究
Control strategies of inverters based on virtual synchronous generator in a micro-grid
摘要
Abstract
The paper studied a kind of micro-grid inverter overall control strategy based on virtual synchronous genera-tor algorithm.Designed virtual synchronous generator algorithm, prime mover adjustment and excitation current ad-justment model respectively, meanwhile with the voltage current double loop control strategy, made the inverter with good droop characteristic of output voltage amplitude and reactive power as well as frequency and active power , which can track the changing load quickly and improve the stability and reliability of the system.In addition, the paper im-proved the virtual prime mover control module, which can achieve the frequency real-time control without error, and improved the control precision and response speed of frequency.Finally simulation results showed that inverter output voltage simulated the external characteristics of synchronous generator well and the phase voltage distortion rate was only 0.2 percent, meanwhile the output frequency was stabilized at 49.98Hz and did not change with the changing load, which verified the correctness and feasibility of the theoretical analysis.关键词
虚拟同步发电机/虚拟原动机/虚拟励磁电流/电压电流双环控制/频率无差控制Key words
virtual synchronous generator/virtual prime mover/virtual excitation current/voltage current double loop control/frequency control without error分类
信息技术与安全科学引用本文复制引用
李清,张彼德,郭筱瑛,刘威,王嘉磊,曹太强,罗谦..基于虚拟同步发电机的微网逆变器控制研究[J].电测与仪表,2015,(13):11-15,5.基金项目
西华大学研究生创新基金（燃料电池发电系统中功率变换器的研究（ycjj2015095））；四川省教育厅重点项目（13ZA0023）；四川省高校重点实验室-太阳能技术集成及应用推广（2013TYNZ02）；攀枝花市基金项目（2014CY-S-1-2），分布式光伏多逆变器并网控制研究（2014YB11）；西华大学重点科研基金（Z1120940）；西华大学流体及动力机械省部共建教育部重点实验室资助 （）
