电动汽车参与直流微电网互动的协调控制研究*

由于能源危机和环境污染问题日趋严重,快速发展电动汽车技术是未来汽车领域的主要趋势。随着电动汽车占常规汽车比例不断升高,电动汽车参与微电网互动技术已经得到了广泛的关注。针对这一问题,本文提出了一种电动汽车移动储能和微电网互动的协调控制策略,建立了电压源型并网变换器、双向DC/DC变换器以及光伏发电单元的数学模型,分析了微电网联网运行和孤岛运行情况的运行模式,给出了不同运行模式下的控制策略,并且通过Matlab/Simulink仿真软件搭建了系统的仿真模型。最终,通过仿真结果验证了本文提出方法的可行性和有效性。

Research on Coordinated Control of DC Microgrid with Electric Vehicle

Due to the increasingly serious energy crisis and environmental pollution problem, the rapid development of electric vehicle technology is the main trend of the automotive industry in the future. With the increasing proportion of electric vehicles to conventional cars, the interaction technology of electric vehicles to microgrid has attracted wide attention. In order to solve this problem, a coordinated control strategy is proposed to achieve the interaction between the mobile energy storage of electric vehicles and the microgrid. The mathematical model of voltage source grid-connected converter, bidirectional DC/DC converter and photovoltaic power generation unit is established. The operation mode of the grid-connected operation and islanding operation mode are analyzed, and the control strategy of the different operation modes is given, the simulation model of the system is built through the Matlab/Simulink simulation software. Finally, the feasibility and effectiveness of the proposed method are verified by the simulation results.