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Academic Journal

纯电动汽车坡道行驶驱动转矩优化控制策略.

Subjects: *TORQUE control; *ELECTRIC vehicles; *VEHICLE models

  • Source: Journal of Jiangsu University-Natural Science Edition / Jiangsu Daxue Xuebao-Ziran Kexue Ban. 2021, Vol. 42 Issue 5, p506-512. 7p.

  • Abstract: To slove the problem of insufficient driving torque during the slope-crossing of pure electric vehicles, a control ... 针对纯电动汽车坡道行驶过程中转矩不足的问题,基于模糊控制算法,提出一种以道路坡 度、加速踏板变化率为输入,驱动转矩为输出的优化转矩控制策略.为了有效识别道路真实坡 度,采用坡度识别算法进行道路真实坡度的识别.在 Matlab/Simulink 中建立车辆模型和控制算 法模型进行了仿真分析,采用 4%的坡道工况对车辆上坡加速性能进行仿真分析,对比了 2种控 制策略下的车速.结果表明:优化转矩控制策略能够更好地识别和响应驾驶意图;在优化转矩控 制策略中,车速为 0~50 km. h-1 的上坡加速时间为 10.65s,比基准转矩控制策略降低了 11.62% 车速为 50~80 km. h-1的上坡加速时间为 8.60s,比基准转矩控制策略降低了 14.85% 该策略能够有效提高车辆的上坡加速性能和经济性 [ABSTRACT FROM AUTHOR]Copyright of Journal of Jiangsu University-Natural Science Edition / Jiangsu Daxue Xuebao-Ziran Kexue Ban is the property of Editorial Department of Journal of Jiangsu University (...

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Academic Journal

需求不确定的电动汽车换电站选址鲁棒模型.

Subjects: *USER charges; *ELECTRIC vehicles; *SENSITIVITY analysis

  • Source: Application Research of Computers / Jisuanji Yingyong Yanjiu. Oct2019, Vol. 36 Issue 10, p3008-3012. 5p.

  • Abstract: The users' charging demand is important input parameters in the battery swap stations location problem of electric vehicles在电动汽车换电站选址问题中,用户充电需求是重要的输入参数,而需求受到技术发展、电动汽车保有 量、国家相关政策等因素的影响,通常较难准确预测。假设交通网络上用户需求是不确定的,利用基约束鲁棒优 化方法提出基于用户路径流量不确定的换电站选址鲁棒模型,并将鲁棒模型转换为等价的线性规划。最后应用 Nguyen-Dupius 网络作为数值算例进行分析,结果表明当解的鲁棒水平较低时,通过适当增加选址成本,可以较 大程度地提高解的鲁棒性。同时对模型的重要参数作灵敏性分析,随着鲁棒水平的提高,换电站选址成本对路 径流量的波动越来越敏感,续航里程的改变对换电站选址策略影响较大. [ABSTRACT FROM AUTHOR]Copyright of Application Research of Computers / Jisuanji Yingyong Yanjiu is the property of Application Research of Computers Edition and its content may not be ...

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Academic Journal

Location models of charging and battery swapping facilities based on electric vehicles.

Subjects: *ELECTRIC vehicle batteries; *ELECTRIC vehicles; *ELECTRIC batteries

  • Source: Xitong Gongcheng Lilun yu Shijian (Systems Engineering Theory & Practice). 2019, Vol. 39 Issue 7, p1781-1795. 15p.

  • Abstract: This paper studies the location problem of battery charging and swapping facilities based on electric vehicle under battery charging mode and ... Copyright of Xitong Gongcheng Lilun yu Shijian (Systems Engineering Theory & Practice) is the property of China International Book Trading Corp. and its content may ...

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Academic Journal

电动汽车分时租赁用户预约分配问题的新型电磁场优化算法求解.

Subjects: *PARTICLE swarm optimization; *ELECTROMAGNETIC fields; *MATHEMATICAL optimization

  • Source: Application Research of Computers / Jisuanji Yingyong Yanjiu. Apr2021, Vol. 38 Issue 4, p1102-1107. 6p.

  • Abstract: Aiming at the limitation of electric vehicle power to driving distance, this paper established a user reservation distribution model to obtain ... 针对电动汽车电量对于行驶里程的限制问题,建立用户预约分配模型,以得到利润最大时的订单分配结果。该类问题属于NP-hard问题,求解具有一定困难。因此,设计一种新型离散电磁场优化算法求解方法。在基本电磁场优化算法的基础上使用二进制编码方式,改变粒子移动方式,并对负电磁场中的电磁粒子增加更新过程。将提出的新算法与遗传算法、二进制粒子群算法、改进二进制布谷鸟算法及二进制狮群算法进行对比,数值实验表明新算法具有更高的计算效率。此外,与传统分配模型相比,新订单分配模型能够获得更高的利润,说明了该模型的有效性。 [ABSTRACT FROM AUTHOR]Copyright of Application Research of Computers / Jisuanji Yingyong Yanjiu is the property of Application Research of Computers Edition and its content may not be ...

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Academic Journal

基于住宅区的电动汽车有序充放电策略研究.

  • Source: Heilongjiang Electric Power Journal. jun2019, Vol. 41 Issue 3, p189-200. 6p.

  • Abstract: Irregular charging and discharging of electric vehicles will inevitably bring challenges to the stable operation of the ... 电动汽车无规律充放电势必会对系统稳定运行造成影响,为此提出一种基于住宅区的电动汽车有序充放电策略。根 据用户出行的习惯和特点,在考虑用户意愿的情况下,将电动汽车 - 私家车分为经济型和普通型两类。基于需求采用临界电 池荷电量的概念,并引入电动汽车优先度指标来具体安排每辆电动汽车的充放电行为。最后以负荷峰谷差率最小为目标建 立优化模型并采用遗传算法求解。算例仿真结果表明,提出的电动汽车有序充放电策略能够对系统起到削峰填谷的作用,并 能一定程度上增加用户的收益。 [ABSTRACT FROM AUTHOR]Copyright of Heilongjiang Electric Power Journal is the property of Heilongjiang Electric Power and its content ...

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Academic Journal

基于串联拓扑结构的电动汽车快速充电桩设计.

  • Source: Journal of Shaanxi University of Science & Technology. 2020, Vol. 38 Issue 4, p147-151. 5p.

  • Abstract: A novel 50 kW fast charger is proposed for electric vehicles. The proposed fast charger is divided into ... 设计了一种新型50kW 电动汽车快速充电桩.提出的快速充电桩分为两个主要部分:执行功率因数校正(PFC)功能的AC灢DC转换器和执行充电功能的DC灢DC转换器.交直流转换器中采用了漏感变压器;在DC灢DC转换器中,采用了一种串联拓扑结构,这种拓扑结构使得DC灢DC转换器的功率转换效率高达95%.为了减少充电桩对交流电网的影响,提出的快速充电系统在两个主电源转换单元之间包含一个缓冲电池组.这将降低电力公司的电力安装成本,改善交流电网的电能质量.此外,通过试验验证了所提出的快速充电系统的性能. [ABSTRACT FROM AUTHOR]Copyright of Journal of Shaanxi University of Science & Technology is the property of Journal of Shaanxi University of Science & Technology Editorial Department and its ...

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Academic Journal

计及电动汽车的综合能源系统概率潮流计算.

  • Source: Journal of Liaoning Technical University (Natural Science Edition) / Liaoning Gongcheng Jishu Daxue Xuebao (Ziran Kexue Ban). Jun2020, Vol. 39 Issue 3, p265-272. 8p.

  • Abstract: Considering the randomness and volatility of electric vehicle charging load, a large number of uncertainties are injected into the integrated energy ... 针对电动汽车充电负荷呈现出的随机性和波动性向综合能源系统注入了大量不确定性问题,通过蒙特卡 洛抽样法,建立电动汽车充电负荷概率模型、电/气/热网络和耦合元件模型;考虑了发电机阀点效应、热电联产 机组的部分负荷效应以及分布式平衡节点;提出了计及电动汽车不确定性的综合能源系统概率潮流计算方法.研 究结果表明:所提出的算法可以求解计及电动汽车充电负荷不确定性的概率潮流.研究结论初步突破了对传统潮 流的认识,帮助电网运行人员获取全网的潮流信息. [ABSTRACT FROM AUTHOR]Copyright of Journal of Liaoning Technical University (Natural Science Edition) / Liaoning Gongcheng Jishu Daxue Xuebao (Ziran Kexue Ban) is the property of Journal of ...

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Academic Journal

插电式并联混合动力汽车再生制动控制策略.

  • Source: Journal of Northeastern University (Natural Science). Dec2016, Vol. 37 Issue 12, p1750-1763. 6p.

  • Abstract: Different from traditional internal combustion engine vehicles, hybrid electric vehicles (HEVs) have regenerative ... 再生制动是混合动力汽车区别于传统汽车的技术特点,是提高车辆燃油经济性的重要措施之一.以一种轴间力矩耦合的插电式并联混合动力汽车为研究对象,从再生制动分配算法的影响因素入手,提出了一种带有模糊控制的混合动力汽车再生制动能量管理策略.所设计的控制策略主要针对两个层面的控制决策,顶层是轴间制动力矩的分配决策,底层是再生制动电机所在的后轴力矩在摩擦制动与再生制动之间的分配决策.采用多种典型车辆行驶工况对所提出的模糊控制策略进行仿真研究.结果表明,所提出的模糊控制策略能够明显改善车辆的能量回收效果,与传统理想制动力分配曲线控制策略相比,能量回收最多可提高23.44%. [ABSTRACT FROM AUTHOR]Copyright of Journal of Northeastern University (Natural Science) is the property of Dongbei Daxue Xuebao and its content may not be copied or emailed ...

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Academic Journal

低温对纯电动汽车性能影响的仿真分析.

Subjects: *LOW temperatures; *ELECTRIC vehicles; *TEMPERATURE effect

  • Source: Forest Engineering. Jan2021, Vol. 37 Issue 1, p73-79. 7p.

  • Abstract: The performance of electric vehicles is mainly affected by the charge and discharge characteristics and power characteristics ... 純电动汽车的性能主要受动力电池的充放电特性和功率特性的影响,而低温条件下經离子动力电池的充放电效 年下降,功率特性变差制約了純电动汽车的推广和发展。为了研究低温条件对纯电动汽车性能的影响,本文通过对經离子动 力电池在不同溫度下进行的放电实验,研究低溫对經离子动力电池性能的影响,并结合实验数据,基于CRUISE 软件选取純电 动汽车车型在低温时对电动汽车性能的影响,进行仿真分析。仿真结果表明,随着温度的降低,纯电动汽车的性能会有明显 的下降。 [ABSTRACT FROM AUTHOR]Copyright of Forest Engineering is the property of Forest Engineering Editorial Office and its content may not be copied or emailed to multiple sites ...

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Academic Journal

高寒地区电动汽车负荷充电特性与电网协调性分析.

  • Source: Heilongjiang Electric Power Journal. aug2019, Vol. 41 Issue 4, p295-301. 7p.

  • Abstract: Aiming at the problem that the popularization speed of electric vehicles is relatively slow in alpine regions, ... 针对电动汽车发展普及速度在高寒地区相对缓慢的问题,根据实测数据分析了气温对电动汽车电池性能的影响以及电动汽车负荷充电特性与电网协调性;结合高寒地区某省地理环境、气象条件、电网运行特点,分析了现阶段该省电动汽车发展中遇到的核心问题,主要包括电动汽车电池低温性能技术、充放电负荷与电网协调性、相关政策的支持与引导。分析结果表明,电动汽车在高寒地区应规模化发展电动公交车,带动电动出租车、私家车的普及与发展;电动汽车研究机构与供电企业应关注电动汽车相关硬件新技术,提高电池的使用性能,降低高寒地区电动汽车普及的成本。 [ABSTRACT FROM AUTHOR]Copyright of Heilongjiang Electric Power Journal is the property of Heilongjiang Electric Power and its content ...

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