变流器虚拟惯量和阻尼协同自适应控制策略  

Adaptive Control Strategy of Virtual Inertia and Damping for Converters

作　　者：王珺[1] 凌志斌[1] 李旭光[1] Wang Jun;Ling Zhibin;Li Xuguang(Key Laboratory of Control of Power Transmission and Conversion,Shanghai Jiao Tong University,Shanghai 200240)

机构地区：[1]上海交通大学电力传输与功率变换控制教育部重点实验室,上海200240

出　　处：《电气自动化》2024年第1期89-92,共4页Electrical Automation

基　　金：国家自然科学基金面上项目(51777125)。

摘　　要：针对变流器传统虚拟同步发电机控制(virtual synchronous generator,VSG)在暂态过程中出现的频率超调等问题,提出一种虚拟惯量和阻尼系数协同自适应控制策略。首先,对VSG变流器系统进行数学建模;然后,通过分析VSG有功和角频率暂态特性曲线,提出一种虚拟惯量和阻尼系数协同自适应控制策略,同时借鉴传统同步发电机小信号模型分析方法建立有功功率环路传递函数,给出参数的选取范围;最后,基于MATLAB/Simulink仿真,验证了所提自适应控制策略在改善频率和功率暂态特性方面的有效性。Aiming at the frequency overshoot of traditional virtual synchronous generator(VSG)for converters in the transient process,a cooperative adaptive control strategy of virtual inertia and damping coefficient was proposed.Firstly,the VSG energy storage converter system was modeled mathematically.Then,based on the analysis of VSG active power and angular frequency transient characteristic curves,a cooperative adaptive control strategy of virtual inertia and damping coefficient was proposed.At the same time,the active power loop transfer function was established based on the small-signal model analysis method of traditional synchronous generator,and the selection range of parameters was given.Finally,the effectiveness of the proposed adaptive control strategy in improving the frequency and power transient characteristics is verified by means of MATLAB/Simulink simulation.

关 键 词：虚拟同步发电机 自适应控制 虚拟惯量 阻尼 小信号模型 功角特性 

分 类 号：TM46[电气工程—电器]