三相并网逆变器的全频域建模与复矢量控制策略  

Full-frequency Domain Modeling and Complex Vector Control of Three-phase Grid-connected Inverter

作　　者：喻振帆 王巍桦 陆秋瑜 向丽玲 段奇佑 王超 陈文新 易斌 万文军 YU Zhenfan;WANG Weihua;LU Qiuyu;XIANG Liling;DUAN Qiyou;WANG Chao;CHEN Wenxin;YI Bin;WAN Wenjun(Electric Power Dispatching Control Center of Guangdong Power Grid Co.,Ltd.,Guangzhou,Guangdong 510600,China;China Southern Grid Power Technology Co.,Ltd.,Guangzhou,Guangdong 510080,China)

机构地区：[1]广东电网有限责任公司电力调度控制中心,广东广州510600 [2]南方电网电力科技股份有限公司,广东广州510080

出　　处：《广东电力》2025年第1期9-17,共9页Guangdong Electric Power

基　　金：中国南方电网有限责任公司科技项目036000KK52220025(GDKJXM20220329)。

摘　　要：三相并网逆变器及其控制系统所组成的储能电池并网系统能够实现储能装置和电网的双向能量交互。基于三相系统的矢量控制策略,全面考虑三相交流信号的频率和相序,研究坐标变换对系统模型的影响,针对在三相静止坐标系下建立的传统频域模型在同步旋转坐标系下不再适用的问题,引入复矢量概念,并通过时-频变换实现了同步旋转坐标系下储能电池并网系统的全频域建模。在此基础上,提出了基于全频域模型的复矢量控制策略,通过提高全频域模型的对称性解决了dq轴电流信号的耦合问题,且实现方式不会增加控制系统的复杂程度。仿真和实验表明,所提出的复矢量控制策略能够有效提高储能电池并网系统的动态响应性能。The energy storage battery grid-connected system composed of three-phase grid-connected inverter and its control system can realize bidirectional energy interaction between energy storage device and power grid.Based on the vector control strategy of three-phase system,this paper comprehensively considers the frequency and phase sequence of threephase AC signals,and studies the influence of coordinate transformation on the system model.Regarding that the conventional frequency domain model established in three-phase static frame doesn’t apply to the synchronous rotating frame,the complex vector is introduced,and the full-frequency domain modelling of energy storage battery grid-connected system in synchronous rotating frame is realized by time-frequency transform.On this basis,the complex vector control strategy based on full-frequency domain model is proposed.By improving the symmetry of the full-frequency domain model,the coupling problem of dq axis current signals are solved,and the implementation method doesn’t increase the complexity of the control system.Simulation and experimental results show that the proposed complex vector control strategy can effectively improve the dynamic response performance of energy storage battery grid-connected system.

关 键 词：储能并网 三相系统 坐标变换 全频域建模 复矢量控制 

分 类 号：TM761[电气工程—电力系统及自动化] TM464