| 纯电动汽车直流双电源无缝切换技术 |
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| 引用本文： | 陈勇,乐登.纯电动汽车直流双电源无缝切换技术[J].电子科技大学学报（自然科学版）,2013,42(6):885-889. |
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| 作者姓名： | 陈勇 乐登 |
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| 作者单位： | 1.电子科技大学能源科学与工程学院 成都 611731 |
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| 基金项目： | 国家自然基金(61105030);中央高校基本科研业务费专项资金(ZYGX2011J02);四川省科技支撑计划(2013GZ0054) |
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| 摘 要： | 针对纯电动汽车动力电池组突然失压的问题,提出了一种基于直流双电源的无缝切换控制算法.该算法在纯电动汽车上增设一组备用电池,一旦检测到动力电池组有失压趋势,立即启用备用电池及升压电路,与动力电池组并联向负载供电,同时进一步检测动力电池组电压性能,根据检测结果决定采用动力电池组或备用电池供电线路.该算法能够实现直流双电源无缝切换,保证负载设备的安全可靠运行,仿真结果表明了该算法的可行性和有效性.
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| 关 键 词： | 升压 双电源 纯电动汽车 无缝切换 |
| 收稿时间： | 2012-07-23 |
Seamless Switching Technology for Pure Electric Vehicles Based on DC Dual Powers |
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| Affiliation: | 1.School of Energy Science and Engineering,University of Electronic Science and Technology of China Chengdu 610731 |
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| Abstract: | To the sudden voltage-loss problem of battery pack in pure electrical vehicles, this paper proposes a seamless switching algorithm used for dual DC power supply. The key of this algorithm is to place a spare battery on the pure electrical vehicles as additional energy for the battery pack. When detected the pack battery has a trend of loss of voltage, in no time, the control system start the boost circuit of the spare battery. At the same time, the control system makes the battery pack and the spare battery in parallel as the power supply for the motor driver system. Then the performance of the battery pack is tested further to put in use of the battery pack power supply or the spare battery power supply. This algorithm can achieve seamless switching, make sure the load voltage stability and the equipment operation safety and reliably. The simulation results demonstrate the validity and feasibility of the proposed algorithm |
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