引用本文: | 吴 凯,程启明,李 明,白园飞,陈 根.具有V2G功能的电动汽车快速充放电方法[J].电力自动化设备,2014,34(2): |
| WU Kai,CHENG Qiming,LI Ming,BAI Yuanfei,CHEN Gen.Fast charging and discharging method for electric vehicle with V2G function[J].Electric Power Automation Equipment,2014,34(2): |
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摘要: |
为充分发挥电动汽车的能量双向流动特性,提出一种具有V2G功能的电动汽车快速充放电方法。可逆充放电机主要包括可逆PWM整流器和双向DC/DC变换器。可逆PWM整流器采用前馈解耦的电压电流双闭环控制,并用LCL滤波代替L滤波,在保证相同滤波效果条件下,降低电感值并提高了系统的响应速度;双向DC/DC变换器采用电流闭环控制来有效控制充放电电流维持在恒定值,采用脉冲充电和恒流放电使电动汽车的充放电电流维持在35 A左右,实现快速充放电功能。仿真结果证明了所提方法的正确性和可行性。 |
关键词: 电动汽车 电池 V2G 可逆PWM整流器 双向DC/DC变换器 脉冲充电 恒流放电 前馈控制 |
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基金项目:上海市重点科技攻关计划项目(11510500800);上海市教委“085工程”科研项目(Z08509122);上海市教委重点学科建设项目(J51301) |
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Fast charging and discharging method for electric vehicle with V2G function |
WU Kai, CHENG Qiming, LI Ming, BAI Yuanfei, CHEN Gen
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College of Automation Engineering,Shanghai University of Electric Power,Shanghai 200090,China
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Abstract: |
To make full use of the bi-directional energy flow of EV(Electric Vehicle),a fast charging and discharging method is proposed for EV with V2G function. The reversible charger of EV contains a reversible PWM rectifier and a bi-directional DC/DC converter. The former is controlled by the feedforward decoupled voltage-current dual close loops and its L filter is replaced by LCL filter,which decreases the inductance for same filtering effect and improves the system response speed;the latter is controlled by the current close loop to effectively keep the pulse charging or constant-current discharging current around 35 A for realizing the fast charging and discharging function. Simulative results show the validity and feasibility of the proposed method. |
Key words: electric vehicles electric batteries V2G reversible PWM rectifier bi-directional DC/DC converter pulse charging constant-current discharging feedforward control |