电工技术学报2017，Vol.32Issue(12)：127-137,11.
基于自适应模式切换的虚拟同步发电机功率控制策略
The Active and Reactive Power Control of Virtual Synchronous Generator Based on Adaptive Mode Switching
摘要
Abstract
The control strategy of conventional energy storage converter wireless virtual synchronous generator (VSG) control based on "power-voltage-current" closed loop is widely used. But the micorgrid voltage would significantly affect the active and reactive output power limits in this strategy. This paper analyzes the effectiveness of two existing solutions. One is the improved droop control method by dynamically adjusting the droop coefficients, which has limited regulating range. The other is the translational droop curve control method. Although this method has an excellent performance, it may cause the output power of VSG to fluctuate and further lead the system to be unstable. The paper proposes an improved VSG control strategy based on adaptive mode switching. Herein, both the additional phase and current instructions are real-time tracked, to realize smooth transition between PQ control current-source mode and VSG control voltage-source mode. Finally, the simulation and experimental platforms are established. The results verify the effectiveness of the proposed strategy.关键词
储能变流器/虚拟同步发电机/微网/自适应模式切换/PQ控制Key words
Energy storage converter/virtual synchronous generator/microgrid/adaptive mode switching/PQ control分类
信息技术与安全科学引用本文复制引用
石荣亮,张兴,徐海珍,刘芳,曹伟..基于自适应模式切换的虚拟同步发电机功率控制策略[J].电工技术学报,2017,32(12):127-137,11.基金项目
国家重点研发计划(2016YFB0900300)和国家自然科学基金(51677049)资助项目. （2016YFB0900300）
