摘要
近些年,由于分布式电源的广泛应用,适用于微电网并离网运行控制的虚拟同步发电机(VSG)技术也得到了广泛的应用。为了提高VSG的调频特性,提出了一种基于VSG的自适应虚拟惯量和阻尼系数协同控制方案。首先通过建立VSG的数学模型,分析了虚拟转动惯量J和阻尼系数D对系统稳定性的影响;然后对传统的VSG控制策略进行改善得到了惯量和阻尼的协同自适应控制策略,并对自适应控制系统的参数进行了确定;最后在Matlab/Simulink仿真软件中进行了模型的搭建和仿真实验,实验结果验证了所提控制策略的可行性和有效性。
In recent years,due to the wide application of distributed power supply,virtual synchronous generator(VSG)technology,which is suitable for micro-grid and off-grid operation control,has also been widely used.In order to improve the frequency modulation characteristics of virtual synchronous generator,an adaptive virtual inertia and damping control scheme was proposed.The influence of moment of inertia J and damping coefficient D on the stability of the system was analyzed by establishing the mathematical model of VSG,and the cooperative adaptive control strategy of inertia and damping was obtained by improving the traditional VSG control strategy,and the parameters of the adaptive control system were determined.Finally,the model was built and the simulation experiment was carried out in Matlab/Simulink simulation software,then the results verify the feasibility and effectiveness of the proposed control strategy.
作者
孙宇新
王鹏
施凯
徐培凤
SUN Yuxin;WANG Peng;SHI Kai;XU Peifeng(School of Electrical and Information Engineering,Jiangsu University,Zhenjiang 212013,Jiangsu,China)
出处
《电气传动》
2021年第21期35-40,共6页
Electric Drive
基金
国家自然科学基金(51407085)
中国博士后科学基金(2015M571685)。
关键词
虚拟同步发电机
频率响应
转动惯量
阻尼系数
自适应控制
virtual synchronous generator(VSG)
frequency response
rotational inertia
damping coefficient
self-adaptive control
