共查询到17条相似文献,搜索用时 93 毫秒
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提出了一种利用超级电容实现电动汽车再生制动能量回收的方法,对电动汽车再生制动中使用的储能装置——超级电容的控制系统进行了研究。介绍了一种基于CAN总线的DC—DC控制器的主回路拓扑结构及其控制策略,并详细说明了系统的软硬件设计。 相似文献
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再生制动技术可以有效回收车辆制动能量,是提高电动汽车续驶里程的重要途径,超级电容具有高功率密度、高效率的特点,利用蓄电池-超级电容组成的复合电源作为电动汽车的储能装置可以改善电池工作状态,提高电池寿命及可靠性,并提高能量回收率。目前使用复合电源(蓄电池-超级电容)进行再生制动的电动汽车多采用并联形式,针对此类状况,基于无源串联复合电源结构设计其再生制动系统,其主要由电机、超级电容组、整流桥和控制器组成。在控制策略上,采用电压反馈恒定电流制动方式,基于脉冲宽度调制(PWM)控制,在制动过程中根据电动汽车车速与超级电容端电压实时调节PWM的占空比以实现目标制动电流恒定。在MATLAB/Simulink平台上建立再生制动系统仿真模型,验证所提控制策略的有效性,并利用某电动汽车对所设计系统进行滑行、制动等试验。研究结果表明:相比有源并联式复合电源,该系统不需要DC/DC转换器,结构及控制简单,该系统能够较好地实现制动能量回收,所采用的控制策略能够有效地实现恒电流制动,电制动减速度稳定,同时具有较高的能量回收率。 相似文献
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提出了利用超级电容作为储能元件实现电动汽车再生制动的能量回收方案,针对TI公司生产的TMSLF24OXDSP,应用脉宽调制PWM控制技术,设计了电动汽车超级电容再生制动系统控制器.介绍了电动汽车再生制动控制器的数字信号处理器DSP及其外围电路、故障信号处理电路、输出隔离电路与滤波电路,以及用C语言编写的各工作模块.调试试验结果表明,当负载突变和充电电流突变时,模糊PID控制策略的再生制动控制器在响应快速性、鲁棒性和自适应性方面效果良好,从而验证了系统的软硬件设计能够很好地回收电动汽车再生制动能量.由于软硬件采用了模块化设计,通用性好、灵活性强,可作为开发平台,应用于多种控制器的设计. 相似文献
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上一期介绍了电动客车的基本结构和关键零部件,本期重点介绍电动客车直流/直流(DC/DC)变换器的电磁兼容性能。电动客车DC/DC变换器主要用于对动力电源的输出进行控制,实现动力电池(或超级电容)与电机控制器之间的电压匹配以及能量传递,或者将动力高压电变换为给辅助蓄电池和低压电气系统供电的低压电,其电路结构既包含了高压、大电流的主电路,又包含了低压、小电流的控制电路(如图所示)。 相似文献
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针对动力电池在混合动力汽车中频繁大功率充放电的问题,采用了电池和超级电容并用的能量存储系统,利用超级电容高功率特性来改善储能系统的性能.本文研究了电池与超级电容直接并联和主动并联两种混合能量存储系统,后者采用零电流转换软开关直流变换器来连接超级电容和电池.在Matlab Simulink平台建立零电流转换软开关直流变换器的动态模型、超级电容和电池模型,并在AVL Cruise中进行仿真.结果表明:直接并联方案不能充分发挥超级电容的能力;而主动并联方案降低了纯电动工况和制动能量回收工况下电池的峰值电流,电池端电压变化范围缩小,能量效率比单一电池的能量存储系统提高了14.92%.另外,由于采用了模糊PID控制算法,改善了动态响应性能. 相似文献
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超级电容在混合动力电动汽车中的应用 总被引:12,自引:0,他引:12
]随着混合动力电动汽车研究的深入 ,超级电容独特的储能特性正日益受到人们的重视。本文在介绍超级电容的分类、特性、工作原理的基础上 ,提出了超级电容和蓄电池一起用于混合动力电动汽车 ,可以实现制动能量快速回收利用、发动机冷起动等 ,对混合动力电动汽车研究具有一定的参考价值。 相似文献
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Design of a soft switching bidirectional DC-DC power converter for ultracapacitor-battery interfaces
Z. W. Wu Z. L. Zhang C. L. Yin Z. Zhao 《International Journal of Automotive Technology》2012,13(2):325-336
One solution to the low specific power of hybrid electric vehicular batteries is a hybrid energy storage system (HESS) that
takes advantage of the high specific power performance of ultra-capacitors. The design of a type of zero current transition
(ZCT) soft switching bidirectional direct current-direct current (DC-DC) power converter that can be used as an ultra-capacitor-battery
interface in an active parallel schema of a HESS is described. The circuit operation of the ZCT DC-DC power converter is depicted
in detail. The HESS controller is designed as a two-layered hierarchical control structure: the first layer is responsible
for working mode control of the HESS, and the second layer is responsible for DC-DC power converter control in which a fuzzy
logic PID algorithmis employed. Simulation results indicate that this design is a potential solution to the problem of the
low specific power of batteries, especially for regenerative braking and electric motor assist. The proposed active parallel
schema with ZCT exhibits a significant advantage in power and energy decoupling. HESS with ZCT achieves better efficiency
compared to the battery only operation. The experimental results validates the idea that the ultra-capacitor cooperates with
the battery in acceleration mode. 相似文献
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Improvement of drivability and fuel economy with a hybrid antiskid braking system in hybrid electric vehicles 总被引:1,自引:0,他引:1
J. L. Zhang Ch. L. Yin J. W. Zhang 《International Journal of Automotive Technology》2010,11(2):205-213
When braking on wet roads, Antilock Braking System (ABS) control can be triggered because the available brake torque is not
sufficient. When the ABS system is active, for a hybrid electric vehicle, the regenerative brake is switched off to safeguard
the normal ABS function. When the ABS control is terminated, it would be favorable to reactivate the regenerative brake. However,
recurring cycles from ABS to motor regenerative braking could occur. This condition is felt to be unpleasant by the driver
and has adverse effects on driving stability. In this paper, a novel hybrid antiskid braking system using fuzzy logic is proposed
for a hybrid electric vehicle that has a regenerative braking system operatively connected to an electric traction motor and
a separate hydraulic braking system. This control strategy and the method for coordination between regenerative and hydraulic
braking are developed. The motor regenerative braking controller is designed. Control of regenerative and hydraulic braking
force distribution is investigated. The simulation and experimental results show that vehicle braking performance and fuel
economy can be improved and the proposed control strategy and method are effective and robust. 相似文献
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Combined control of a regenerative braking and antilock braking system for hybrid electric vehicles 总被引:1,自引:0,他引:1
D. Peng Y. Zhang C. -L. Yin J. -W. Zhang 《International Journal of Automotive Technology》2008,9(6):749-757
Most parallel hybrid electric vehicles (HEV) employ both a hydraulic braking system and a regenerative braking system to provide
enhanced braking performance and energy regeneration. A new design of a combined braking control strategy (CBCS) is presented
in this paper. The design is based on a new method of HEV braking torque distribution that makes the hydraulic braking system
work together with the regenerative braking system. The control system meets the requirements of a vehicle longitudinal braking
performance and gets more regenerative energy charge back to the battery. In the described system, a logic threshold control
strategy (LTCS) is developed to adjust the hydraulic braking torque dynamically, and a fuzzy logic control strategy (FCS)
is applied to adjust the regenerative braking torque dynamically. With the control strategy, the hydraulic braking system
and the regenerative braking system work synchronously to assure high regenerative efficiency and good braking performance,
even on roads with a low adhesion coefficient when emergency braking is required. The proposed braking control strategy is
steady and effective, as demonstrated by the experiment and the simulation. 相似文献
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Andrei Aksjonov Valery Vodovozov Klaus Augsburg Eduard Petlenkov 《International Journal of Automotive Technology》2018,19(4):727-742
This paper presents a regenerative anti-lock braking system control method with road detection capability. The aim of the proposed methodology is to improve electric vehicle safety and energy economy during braking maneuvers. Vehicle body longitudinal deceleration is used to estimate a road surface. Based on the estimation results, the controller generates an appropriate braking torque to keep an optimal for various road surfaces wheel slip and to regenerate for a given motor the maximum possible amount of energy during vehicle deceleration. A fuzzy logic controller is applied to fulfill the task. The control method is tested on a four in-wheel-motor drive sport utility electric vehicle model. The model is constructed and parametrized according to the specifications provided by the vehicle manufacturer. The simulation results conducted on different road surfaces, including dry, wet and icy, are introduced. 相似文献