互联变换器的模糊VSG参数自适应控制  

Fuzzy VSG parameter adaptive control of the interlinking converter

作　　者：刘晨 王生铁[1] 刘瑞明 LIU Chen;WANG Shengtie;LIU Ruiming(College of Electric Power,Inner Mongolia University of Technology,Hohhot 010080,China;Engineering Research Center of Large Energy Storage Technology,Ministry of Education,Inner Mongolia University of Technology,Hohhot 010080,China)

机构地区：[1]内蒙古工业大学电力学院,内蒙古呼和浩特010080 [2]内蒙古工业大学大规模储能技术教育部工程研究中心,内蒙古呼和浩特010080

出　　处：《内蒙古工业大学学报(自然科学版)》2025年第2期118-125,共8页Journal of Inner Mongolia University of Technology:Natural Science Edition

基　　金：内蒙古自治区自然科学基金项目(2019MS06026)。

摘　　要：对于弱电网条件下的交直流混合微电网,存在交流子网缺少惯性和母线频率易突变等问题,研究改善微电网动态性能的互联变换器控制策略。为提高系统惯性,在功率控制的基础上,引入虚拟同步发电机(VSG)技术,给出了互联变换器VSG控制结构。为增强参数的适应性,在分析同步发电机惯性特性和阻尼特性对系统动态性能影响的基础上,采用模糊控制技术,给出了互联变换器基于模糊控制的VSG参数自适应控制策略。仿真结果表明,该控制策略可使混合微电网在调度模式下响应功率指令时,功率和频率响应更快,超调更小,性能更优。For AC/DC hybrid microgrid under weak grid conditions,there are problems such as the lack of inertia of AC subgrids and the susceptibility of bus frequency to sudden changes.This study focuses on improving the dynamic performance of the microgrid through the control strategy of interlinking converter(ILC).To enhance the system inertia,virtual synchronous generator(VSG)technology is introduced on the basis of power control,and the VSG control structure of the interlinking converter is given.To improve the adaptability of system parameters,based on the analysis of the influence of synchronous generator inertia properties and damping properties on system dynamic performance,the fuzzy control-based VSG parameters adaptive control strategy of the ILC is given.Simulation results indicate that the proposed control strategy exhibits faster power and frequency response speed,smaller overshoot,and superior performance of the hybrid microgrid when responding to power commands in the dispatching mode.

关 键 词：交直流混合微电网 模糊控制 虚拟同步发电机 互联变换器 参数自适应 

分 类 号：TM727[电气工程—电力系统及自动化]