共查询到20条相似文献,搜索用时 343 毫秒
1.
能源的短缺和燃油汽车无法最终解决的环境污染问题对汽车工业提出了前所未有的挑战。而近二十年中电机及其控制技术、蓄电池技术,特别是燃料电池技术的突破性进展使得汽车工业重新将目光投回到电动汽车上,从动力系统方案上来区分,电动汽车主要有纯电动、混合动力和燃料电池三种类型。本文将对电动车用电机发展概况及其驱动系统进行详细介绍。 相似文献
2.
2010年11月5日至9日,第25届世界纯电动车、混合动力车和燃料电池车大会暨展览会在深圳成功举行。这次电动车大会暨展览会的主题是"可持续动力革命"。顾名思义,可持续动力就是指生生不息的动力,同时也是未来汽车工业的发展方向,全球汽车工业的领跑者都把开发新能源放在了最重要的位置。中国目前是全球最大的汽车市场,中国政府已明确提出了大力发展电动汽车(EV)等电动车辆的方针,因此这次EVS25大会是一个前瞻汽车未来潮流、窥探新能源发展的最佳舞台。本次展览会期间,约有350家企业及大学等机构参会,约60家以中国公司为主的企业展出了电动车辆及外围设备。本次展会齐聚了知名汽车企业家、学者、教授、工程技术人员于一堂,展示世界纯电动车、混合动力车和燃料电池车等新能源与节能环保汽车、汽车零部件最新技术发展以及成果,共同探讨其未来发展方向。 相似文献
3.
与传统汽车相比,电动汽车采用的电气部件、电子控制单元等电气件更多。在低频段(9kHz~30MHz),其主要部件如逆变器和电动机等低频骚扰源与车辆的电子控制单元有严重的相互干扰。文章对电动车辆电磁场辐射骚扰的测量方法进行了探讨,通过对两台电动车辆测量数据的比较及低频段电动车辆可能发射源的分析,论述了GB/T18387-2001实施的必要性和可行性。 相似文献
4.
<正>2020年,中国两轮电动车销量达4760万辆,随着各地《新国标》过渡期限的临近,从2021年开始,超标两轮电动车将正式迎来大量清退替换,两轮电动车销量将大幅上涨。2021年,雅迪、爱玛、小刀、台铃等两轮电动车企业纷纷制定了几乎两倍于去年数据的销量目标,同时,随着共享电动自行车团体运营政策的发布,两轮电动自行车共享出行运营规范化提高,哈罗、青桔、美团等平台共享电动自行车的投放量也会大量增加。预计未来两年,两轮电动车的平均销量可达5700万辆。2020年,中国两轮电动车市场规模达1046亿元,2021—2023年两轮电动车的规模增长贡献主要来自新国标替换产生的销量增长。 相似文献
5.
6.
7.
8.
通过对感应式电动振动台和传统的电动振动台的结构原理进行比较,利用传统的电动振动台比较成熟的计算方法,对感应式电动振动台的计算方法进行了研究,提出了利用类似变压器模型来模拟感应式电动振动台的新型计算方法,引入变流比的参数来建立感应式电动振动台的电路方程。并在40kg传统的电动振动台的基础上设计制造出一台感应式电动振动台原理样机,通过对这台感应式电动振动台原理样机和传统的40kg电动振动台的特性测试进行比较,验证感应式电动振动台的理论计算公式,并总结感应式电动振动台的优缺点,为今后大型感应式振动台的设计提供理论依据。 相似文献
9.
10.
<正> 电动自行车作为低成本便捷的交通工具已走进了千家万户,但给电动车充电不当造成电瓶损坏是广大用户经常遇到的问题。电瓶充电进程与容量大小和匹配程度、环境温度等有直接关系,目前市面上普通电动车充电器出于竞争、降低成本的考虑,往往设计简单、功能单一,有的充电器甚至设计很不完善,而用 相似文献
11.
首先对电动汽车充电桩配电设计的基本分类情况进行了总结研究,并结合当前大型公交充电的实际需要,制定了提升立体车库之中电动汽车充电桩配电设计质量的具体策略。该策略对于提升电动汽车充电桩配电设计综合质量,具有十分重要的意义。 相似文献
12.
本文研究中针对基于耦合变压器补偿技术的电动汽车无线充电系统优化设计进行分析,使系统的设计更加科学合理,以更好进行电动汽车充电. 相似文献
13.
14.
聂世刚 《电子产品可靠性与环境试验》2006,24(2):21-25
对加固计算机用开关电源的可靠性设计进行了系统的探讨。结合开关电源的原理.对影响其可靠性的因素和元器件的选用原则进行了阐述,着重分析了加固计算机用开关电源的可靠性设计:电应力设计、保护电路设计、热设计、电磁兼容性设计、安全性设计和三防设计。其目的在于提高加固计算机用开关电源的可靠性。 相似文献
15.
16.
17.
18.
Energy storage system, usually a battery, become essential part for all electric drive vehicles such as hybrid electric vehicle (HEV), plug-in hybrid electric vehicle (PHEV) and electric vehicle (EV) in the coming decades. These energy storage systems include Li-ion batteries, Ni-MH batteries, lead-acid batteries and ultra-capacitors. An accurate Battery Management System (BMS) is highly demanded integrated system in all electric derive vehicles to ensure the optimum use of an energy storage system. The battery's state monitoring & evaluation, charge control and cell balancing are the important features of any BMS. However, due to unavailability of inaccurate battery's state-of-charge (SoC)/state-of-health (SoH) estimators and uncertainty of battery's performance, new approaches of BMS design are under development to control batteries optimally and hence, the vehicle performance. In addition, most of the existing BMSs either do not provide SoH at all or provide it as a function of capacity degradation over the battery usage. This research paper presents the field-programmable gate array (FPGA) - based Advanced BMS design using MATLAB-to-FPGA design flow. The Advanced BMS design provides the combined estimation of both SoC and SoH of a rechargeable battery. This research paper also summarizes the Neuro-Fuzzy & statistical models implemented in Advanced BMS for accurate estimation of battery's SoC & SoH respectively. Further, this research paper presents the selection of suitable FPGA and its hardware realization implementing Advanced BMS. Finally, the experimental results are confirmed by simulation and synthesis of its register transfer level (RTL) design. FPGA-based Advanced BMS would provide the best chip solution for a generalized BMS with benefits of low Non-recurring engineering (NRE) cost, low power consumption, high speed of operation, large reconfigurable logic and large data storage capacity. 相似文献
19.
Unified modeling of hybrid electric vehicle drivetrains 总被引:3,自引:0,他引:3
Hybridizing automotive drivetrains, or using more than one type of energy converter, is considered an important step toward very low pollutant emission and high fuel economy. The automotive industry and governments in the United States, Europe, and Japan have formed strategic initiatives with the aim of cooperating in the development of new vehicle technologies. Efforts to meet fuel economy and exhaust emission targets have initiated major advances in hybrid drivetrain system components, including: high-efficiency high-specific power electric motors and controllers; load-leveling devices such as ultracapacitors and fly-wheels; hydrogen and direct-methanol fuel cells; direct injection diesel and Otto cycle engines; and advanced batteries. The design of hybrid electric vehicles is an excellent example of the need for mechatronic system analysis and design methods. If one is to fully realize the potential of using these technologies, a complete vehicle system approach for component selection and optimization over typical driving situations is required. The control problems that arise in connection with hybrid power trains are significant and pose additional challenges to power-train control engineers. The principal aim of the paper is to propose a framework for the analysis, design, and control of optimum hybrid vehicles within the context of energy and power flow analysis. The approaches and results presented in the paper are one step toward the development of a complete toolbox for the analysis and design of hybrid vehicles 相似文献
20.
声音导引系统.是基于无线通信技术的新型导引系统.可以应用于新型智能机器人控制系统.这种声音控制机器人的运动方式将有着广阔的应用前景。将声音导引无线通信技术与单片机结合起来,设计了声音导引电动车系统,通过接收平台接收到声音时间不同,计算出指定位置,通过无线传输数据控制电动车到达指定位置。用单片机完成整个系统的控制。通过单... 相似文献