由光伏直接供电的电动汽车无线充电系统控制策略

为提升光伏发电的就地消纳能力,弥补电动汽车有线充电存在的弊端,通过提出一种含电动汽车无线充电的直流微网拓扑结构,研究了由光伏直接向电动汽车供电的控制方法。该拓扑以光伏发电系统为基础,新增了以蓄电池、超级电容器组成的混合储能模块,光伏系统在为充电站自身负荷供电的同时,向电动汽车供电,对系统中各部分进行优化并提出相应控制策略。Simulink仿真与实验结果表明:混合储能模块可有效平抑光伏输出功率的波动;磁耦合谐振式无线电能传输方式可提高电动汽车充电效果;在保证电动汽车稳定充电的基础上促进了光伏消纳。验证了所提拓扑的可行性与控制策略的有效性。

Control Strategy of Electric Vehicle Wireless Charging System Directly Powered by Photovoltaic

In order to improve the local absorption capacity of photovoltaic power generation and make up for the disadvantages of wired charging of electric vehicles, a DC micro-grid topology including wireless charging of electric vehicles was proposed, and the control method of direct power supply from photovoltaic to electric vehicles was studied. The topology is based on the photovoltaic power generation system, and a hybrid energy storage module composed of batteries and super capacitors is added, the charging station''s own load is powered by the photovoltaic system, and the electric vehicles is also powered by the photovoltaic system, each part of the system is optimized and the corresponding control strategy is proposed. Simulink simulation and experimental results show that the power fluctuation of photovoltaic output is effectively suppressed by the hybrid energy storage module; the charging effect of electric vehicles is obviously improved by adopting the magnetic coupling resonant radio energy transmission mode; on the basis of ensuring stable charging of electric vehicles, photovoltaic consumption is promoted. It can be seen that the proposed topology is feasible and the control strategy is effective.