Charge-Discharge Control Strategy System of Electric Vehicle Based on Bidirectional DC-DC Converter

Proceedings of the 2nd International Conference on Information Technologies and Electrical Engineering Pub Date : 2019-12-06 DOI:10.1145/3386415.3387043

J. Luo, Jinhui Zeng, Zixuan Yang, Yingxin Hu

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Abstract

In view of energy crisis, environmental pollution, uncoordinated charging of electric vehicles(EVs) and peak-valley load of power grid, this paper studies the coordinated control strategy of distributed energy, energy storage and charging and discharging of EVs in dc micro-grid environment. EVs have a dual role when accessing the micro-grid: they can be regarded as loads when they are charging. Simultaneously, when electric automobile battery has sufficient power, it can input power to the micro-grid load. Firstly, this paper introduces the operating principle of the converter for charging and discharging of EVs. The converter is a critical component of the convergence and transmission of electrical energy in DC micro-grid, electric automobile and energy storage system. Secondly, the overall control strategy of chargedischarge system of electric automobile is put forward. Finally, the simulation outcomes show the practicability and availability of the charge-discharge control strategy.

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基于双向DC-DC变换器的电动汽车充放电控制策略系统

针对能源危机、环境污染、电动汽车不协调充电和电网峰谷负荷等问题，研究了直流微电网环境下电动汽车分布式能源、储能和充放电的协调控制策略。电动汽车在接入微电网时具有双重角色:充电时可被视为负载。同时，当电动汽车蓄电池电量充足时，可以向微网负载输入电能。本文首先介绍了电动汽车充放电变换器的工作原理。在直流微电网、电动汽车和储能系统中，变换器是电能汇聚和传输的关键部件。其次，提出了电动汽车充放电系统的总体控制策略。最后，仿真结果表明了该充放电控制策略的实用性和有效性。

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Proceedings of the 2nd International Conference on Information Technologies and Electrical Engineering

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