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电动汽车轮毂电机技术 总被引:1,自引:0,他引:1
四、电动汽车轮毂电机的工作原理
当前电动汽车轮毂电机有直流电动机、无刷直流电动机、交流感应电动机(异步电动机)、永磁同步电动机和开关磁阻电动机等。
直流电动机分励磁式(有励磁线圈)和永磁式(永久磁铁)两大类。励磁式直流电机又分三类,即:1.他励直流电动机(见图15);2.并励直流电动机:3.串励直流电动机。 相似文献
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汇总了10多年来不同国家电动汽车的厂家、所生产的车型、电动汽车的类型、电动汽车驱动电机的种类与控制方式;中国、日本等国家的电动汽车驱动电机多采用永磁同步电动机,从其控制方式出发,对电动汽车驱动电机的转矩控制等加以介绍;阐述永磁电动机控制系统的构成,以及矢量控制与弱磁控制。 相似文献
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电动汽车驱动用电机的选择 总被引:8,自引:0,他引:8
本文在提出电动汽车对驱动电机的性能指标要求的基础上,通过比较几种不同的汽车驱动用电机,最后论证提出一种适合于电动汽车驱动用的性能优越的电动机——外转子双凸极永磁电动机(DSPM),并针对该电机提出了一些设计方面的特点。 相似文献
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一、电动汽车概述电动汽车采用电动机驱动车轮行驶,动力来源于车载电源,作为理想"零排放"(或少排放)汽车,可使全球污染和能源危机等问题迎刃而解。为此,汽车产业朝低碳经济方向转型升级势在必行。现代电动汽车主要分为三类:纯电动汽车(EV)、混合动力汽车(HEV)、燃料电池电动汽车(FCEV)。驱动电机及其控制技术是电动汽车关键技术之一,是提高可靠性、驱动性能和续驶里程的基本保证。电机驱 相似文献
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文章介绍汽车对驱动电机的特殊要求及永磁电机作为驱动电机的优势,分析永磁驱动电机研发现状及其在电动汽车上的应用,展望未来汽车永磁驱动电机的发展趋势. 相似文献
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在石油开采过度和环境污染等问题愈来愈严重的情况下,世界各国政府和汽车生产商加大了对电动汽车的研发力度。目前,轮毂电机驱动电动汽车作为一种比较新的电动汽车形式,正受到世界各国汽车生产商的青睐。为了提高电动汽车整车控制性能,往往是采用普通机械式传感器的方法来获取轮毂电机的转子位置信息,来对轮毂电机进行矢量控制,这种方法不利于汽车的轻量化且容易发生故障。为了实现轮毂电机的矢量控制,对永磁轮毂电机全速度范围无位置传感器控制方法进行了重点分析,并对电动汽车永磁同步轮毂电机无位置传感器控制技术发展进行了展望,认为信号注入法的改进、参数敏感问题及切换算法的改进是未来的研究方向和发展趋势。 相似文献
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J. Gu M. Ouyang D. Lu J. Li L. Lu 《International Journal of Automotive Technology》2013,14(5):763-772
Electric vehicle is considered to be the solution for energy and environment crisis, but it’s still not competitive enough with conventional vehicles because of the limited energy density and high cost of the power battery. So the energy efficiency is of the most importance for the control of electric vehicles. This paper looks into the energy efficiency optimization problem of electric vehicle driven by four in-wheel motors by developing a comprehensive energy efficiency model of the permanent magnet synchronous motor including the inverter. The calculated efficiency agrees with the measured data quite well. Based on the power loss analysis, the conclusion is drawn that in all driving or braking conditions the total torque requirement should be distributed evenly to all the motors in order to maximize the energy efficiency for electric vehicles driven by permanent magnet synchronous in-wheel motors. Vehicle test results show that the energy efficiency of the evenly distributed torque control is higher than the control strategy proposed by control allocation in literature. 相似文献
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为比较纯电动汽车不同驱动系统的关键性能,基于同一整车参数和某公司提供的可变绕组永磁同步电机试验数据,对纯电动汽车电机驱动系统开展了相关研究。基于精英保留遗传算法和动态规划理论,对单挡、两挡电控机械式自动变速器驱动系统的速比进行了设计优化。采用了精英保留遗传算法和动态规划理论对系统速比进行设计优化,并对可变绕组永磁同步电机绕组切换过程进行了动力性和经济性设计。仿真结果表明,在动力性上,两挡自动变速器驱动系统的加速性能最优;在经济性上,可变绕组永磁同步电机驱动系统的百公里能耗最小,单挡自动变速器驱动系统的动力性和经济性表现最不理想。 相似文献
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为提高电动汽车用内置式永磁同步电机气隙磁场解析计算精度和优化效率,利用混合解析法建立考虑转子铁心磁桥饱和效应的电机气隙磁场参数化解析模型。首先利用联合等效磁路法的子域法建立内置式永磁同步电机开路气隙磁场解析模型;然后利用同样方法建立转子磁桥虚拟磁场解析模型,从而得到考虑转子磁桥饱和效应的电枢反应磁场解析模型;最后通过叠加原理建立内置式永磁同步电机合成气隙磁场解析模型。通过有限元仿真和转矩测试验证内置式永磁同步电机气隙磁场解析模型的准确性。基于所建立的解析模型,以永磁体极弧宽度、定子槽口宽度和转子端部磁桥厚度为优化变量,以特定阶次频率的径向力波、转矩和效率为优化目标,利用带精英策略的非支配排序遗传算法,对一台电动汽车用内置式永磁同步电机样机进行多变量多目标优化。研究结果表明:与试验结果相比,解析计算误差小于5%,而计算时间较有限元仿真缩短90%以上;优化后,电机特定阶次频率的径向力波减小了9.2%,最大转矩提升了2.49%,最大效率提升了0.69%,高效区面积扩大了约54.46%;所提方法既解决了内置式永磁同步电机强非线性和高饱和的解析建模共性难点,又极大提高了电机多目标优化效率;研究可... 相似文献
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This paper presents a space vector current controller for a brushless permanent magnet motor in electric and hybrid electric
vehicles. The proposed current controller selects space vectors based on the sector selection under a three-level hysteresis
comparator to decrease the current ripple. The proposed approach can improve the performance of a brushless PM drive such
as the average switching frequency and the total harmonic distortion (THD) compared with the conventional hysteresis current
control. The experiment is performed first to verify the proposed control. Then, the method is implemented in a hybrid electric
vehicle simulation model with standard driving cycles based on the control strategy to evaluate the drive performance in the
vehicle system. The experimental and simulation results indicate that the presented control can improve the performance of
the brushless PM machine drive. 相似文献
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J. Hur 《International Journal of Automotive Technology》2010,11(4):593-600
Motorization in vehicles is expanding rapidly for fuel efficiency, customer comfort, convenience, and safety features. These
new electric loads represent an increase in the required electric power. This has generated interest in new, higher power
systems such as the 42V Power Net. The electro-hydraulic power steering (EHPS) system is one of these systems. This paper
presents the development of the electric motor-driven pump unit for the EHPS system using a 42V power-Net. The interior type
permanent magnet synchronous motor (IPMSM) can be applied to this system with more power density per volume for compactness
of the EHPS. In order to improve the system, the IPMSM and its control method was optimized for improved torque characteristics
and electric power consumption. The performances of both the pump unit and the IPMSM have been verified by experimental results.
Finally, all in one type the electric motor-driven pump unit are developed from the experiment verification. 相似文献