Study on bidirectional-charger for electric vehicle applied to power dispatching in smart grid
Study on bidirectional-charger for electric vehicle applied to power dispatching in smart grid
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电动汽车双向充电机在智能电网电力调度中的应用研究
DOI：
10.1109/ipemc.2016.7512726
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
P. Wheeler
中科院分区：
文献类型：
--
作者：
Yu Fang;Songyin Cao;Yong Xie;P. Wheeler
将电动汽车蓄电池作为分布式储能单元，接受电力调度将是电动汽车发展的重要内容之一，而双向充电器是目前电动汽车蓄电池接入电网的关键电力电子器件。本文研究了一种由T型中点箝位（NPC）三相三电平（TL）AC/DC和双有源桥（DAB）DC/DC组成的两级双向功率变换器，采用直接功率控制策略接受电网的功率调度。以高可靠性、高效率和高电能质量为目标，提出了一种新的空间矢量调制（SVPWM）方法来避免桥臂端电压畸变，并提出了串并联DAB变换器来进一步提高效率。最后通过实验验证了电路拓扑和控制策略的可行性。
It will be one of the most important content to take the electric vehicle batteries as distributed energy storage units which can accept the power dispatching, and now bidirectional charger is the key power electronic device that has been used to connect power grid to the electric vehicle battery. In this paper, a two-stage bidirectional power converter made up of T-type neutral point clamped (NPC) three-phase three-level (TL) AC/DC and dual active bridge (DAB) DC/DC is studied, And the direct power control strategy is adopted to accept power dispatching from power grid. With high reliability, efficiency and high power quality as the goal, a novel space vector modulation (SVPWM) is proposed to avoid the terminal voltage distortion of bridge legs, and the series-parallel-connection DAB converter is presented to further improve efficiency. Finally, experimental results verify the feasibility of circuit topology and control strategy.