光伏离网和并网逆变器的非线性动力学行为、控制与同步研究

项目名称： 光伏离网和并网逆变器的非线性动力学行为、控制与同步研究

项目编号： No.11262004

项目类型： 地区科学基金项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 罗晓曙

作者单位： 广西师范大学

项目金额： 56万元

中文摘要： 本项目首先根据电路理论，对几种光伏离网和并网逆变器进行建模，应用非线性动力学理论和方法深入研究系统模型的稳定性、分岔和混沌等各种动力学行为,揭示电路结构、参数与其稳定性、效率、功率因素、谐波抑制等物理特性的关系；其次，在深入理论分析的基础上，采用不同非线性控制和混沌控制的方法，对离网和并网逆变器进行控制研究，探索最佳的控制策略，提高离网和并网逆变器的各种物理性能；然后利用混沌同步理论和混沌检测技术，探索光伏并网逆变器与主电网同步的新方法和孤岛检测的新技术。最后，借鉴复杂网路的理论与方法，进一步研究分布式光伏发电网的非线性动力学建模和动力学行为。本项目的研究不仅对高性能的光伏离网和并网逆变器设计具有重要的理论指导价值，而且对光伏分布式并网发电系统的高效、安全稳定运行具有较重要的理论意义和应用价值。

中文关键词： 光伏逆变器；非线性动力学；复杂网络；同步；最大功率点

英文摘要： First, according to the circuit theory, several models of photovoltaic off-grid and grid-connected inverter are established. by using nonlinear dynamics theory and method, various dynamic behaviors of the system models,such as the stability,the bifurcation and chaos behavior is fully researched and the relationship between the structure and parameters of circuit and physical properties of circuit,such as the stability, efficiency, power factor, harmonic suppression is revealed. Based on the fully theoretical analysis above, by using different nonlinear control and chaos control methods ,control are studied for the 0ff-gird and grid-connected inverter to explor the best control strategy and to improve various physical properties of off-grid and grid-connected inverters.Next, the new technology of Islanding detection and new synchronization methods between the photovoltaic grid-connected inverter and main-grid is explored by using chaos synchronization theory and Chaos detection technology.Finally,the nonlinear dynamics modeling and dynamics behavior of distributional photovoltaic power generation is further studied drawing on of complex network's theory and method.The study of this project not only has more important theoretical instructional value for the design of photovoltaic off-gird and grid-connected in

英文关键词： Photovoltaic inverter；Nonlinear dynamics；Complex network；Synchronization；Maximum power point