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1.
为满足混合动力汽车要随时根据整车的运行模式调整发动机输出扭矩的需要,采用传统节气门阀,加装BOSCH公司DV-E5型节气门控制直流电机和传动装置,开发了一种新型的高可靠并具有故障诊断功能的驱动电路。针对系统不同开度区间运行特性的差异,应用改进的变结构PID对系统进行控制,并提出基于发动机最佳工作点的复合式混合动力汽车发动机目标节气门确定方法。台架联合调试结果表明,所开发的电控节气门系统具有较好响应速度和控制稳定性。  相似文献   

2.
在油电混合动力汽车(HEV,Hybrid.Electric Vehicles)中不管是交流/直流或是直流/直流电压转换器都足桕当关键的构建方块,如主电池的高电压大约200V~800V,混合动力汽车通常使用直流,直流转换器把电压由高电压电池升压以提供电动汽车电机动力,  相似文献   

3.
This paper describes a hybrid electric vehicle drive control system under microcomputer control where the propulsion power is shared between a gasoline engine and a dc motor. The control functions have been developed, analyzed, and implemented with highlevel language in a dual Intel 8086 microcomputer system. The drive system has been integrated and tested, and shows excellent results.  相似文献   

4.
In an effort to reduce fuel costs and gas emissions, the U.S. Army is looking into replacing their diesel high-mobility multipurpose wheeled vehicle (HMMWV) with hybrid electric vehicles. The aim of this paper is to present the simulation of the series hybrid electric HMMWV based on a multidomain model using Ansoft Simplorer. Emphasis is placed on the vehicle's transient response to desired speeds dictated by drive cycles based on an urban dynamometer driving schedule and SAE J227a Schedule D. Also included in this paper were the vehicle's responses to hill climbing up to 60% grade  相似文献   

5.
In recent decades, there has been a growing global concern with regard to vehicle-generated greenhouse gas emissions and the resulting air pollution. In response, automotive original equipment manufacturers focus their efforts on developing “greener” propulsion solutions in order to meet the societal demand and ecological need for clean transportation. Hydrogen is an ideal vehicle fuel for use not only in fuel cells (FCs) but also in a spark-ignition internal combustion engines (ICEs). The combustion of hydrogen $( hbox{H}_{2})$ fuel offers vastly superior tail-pipe emissions when compared with gasoline and can offer improved performance. $hbox{H}_{2}$ is ideally suited for use in an extended range plug-in hybrid electric vehicle architecture where engine efficiency can be optimized for a single engine speed. $hbox{H}_{2}$ ICEs are significantly more cost effective then an equivalent-sized $hbox{H}_{2}$ FC making them a better near-term solution. Before hydrogen can replace gasoline and diesel as the main source of automotive fuel, a number of hurdles must first be overcome. One such hurdle includes developing a suitable hydrogen infrastructure, which could take decades. As such, dual-fuel capabilities will help to create a transition between gasoline- and hydrogen-powered vehicles in the near term, while a full-service hydrogen infrastructure is developed.   相似文献   

6.
With the increased emphasis on improving fuel economy and reducing emissions, hybrid electric vehicles (HEVs) have emerged as very strong candidates to achieve these goals. The power-split hybrid system, which is a complex hybrid powertrain, exhibits great potential to improve fuel economy by determining the most efficient regions for engine operation and thereby high-voltage (HV) battery operation to achieve overall vehicle efficiency optimization. To control and maintain the actual HV battery power, a sophisticated control system is essential, which controls engine power and thereby engine speed to achieve the desired HV battery maintenance power. Conventional approaches use proportional-integral (PI) control systems to control the actual HV battery power in power-split HEV, which can sometimes result in either overshoots of engine speed and power or degraded response and settling times due to the nonlinearity of the power-split hybrid system. We have developed a novel approach to intelligently controlling engine power and speed behavior in a power-split HEV using the fuzzy control paradigm for better performances. To the best of our knowledge, this is the first reported use of the fuzzy control method to control engine power and speed of a power-split HEV in the applied automotive field. Our approach uses fuzzy gain scheduling to determine appropriate gains for the PI controller based on the system's operating conditions. The improvements include elimination of the overshoots as well as approximate 50% faster response and settling times in comparison with the conventional linear PI control approach. The improved performances are demonstrated through simulations and field experiments using a ford escape hybrid vehicle.  相似文献   

7.
本文介绍了如何使用普传P17000矢量控制变频器的主板端予功能、保护功能等实现混合动力电动汽车的低频大转矩及通过汽车油门信号的大小进行凋速的工艺要求,同时实现了节能与环保;着重介绍了变频器在混合动力电动汽车系统中的工作原理,变频器矢量控制的功能参数设置及调试方法,变频器常见故障及排除措施。  相似文献   

8.
9.
The application of a state language to the real-time control of a hybrid electric vehicle is explained. The state language has been developed both as a specification aid to the system designer and as a means for the programmer to produce microcomputer software. A translator program, which was developed on a VAX minicomputer, preprocesses the state language into a software module to be compiled by the standard Intel PL/M 86 compiler.  相似文献   

10.
A vehicle stability enhancement control algorithm for a four-wheel-drive hybrid electric vehicle (HEV) is proposed using rear motor driving, regenerative braking control, and electrohydraulic brake (EHB) control. A fuzzy-rule-based control algorithm is proposed, which generates the direct yaw moment to compensate for the errors of the sideslip angle and yaw rate. Performance of the vehicle stability control algorithm is evaluated using ADAMS and MATLAB Simulink cosimulations. HEV chassis elements such as the tires, suspension system, and steering system are modeled to describe the vehicle's dynamic behavior in more detail using ADAMS, whereas HEV power train elements such as the engine, motor, battery, and transmission are modeled using MATLAB Simulink with the control algorithm. It is found from the simulation results that the driving and regenerative braking at the rear motor is able to provide improved stability. In addition, better performance can be achieved by applying the driving and regenerative braking control, as well as EHB control.  相似文献   

11.
回顾了二十四所混合集成电路专业方向的发展历程.按不同历史阶段,介绍了二十四所混合集成电路二十余年的技术进步轨迹和所取得的主要成就;最后,对二十四所混合集成电路未来的发展前景进行了展望.  相似文献   

12.
介绍了ECE R10第4版法规关于电动车和混合动力车在充电过程中,对外界环境所产生的辐射干扰和对电网及网络产生的传导干扰要求,以及车辆本身对来自外界辐射和传导干扰的抗干扰能力要求,并针对这些要求与相关的国际标准进行了比较与分析。  相似文献   

13.
丰田Prius是世界上第一款大规模生产的混合动力乘用车,本文对混合动力汽车特别是Prius作了简要的介绍。文中对Prius中采用的一些电机控制技术,如方波电压调制技术、过调制和使用的电压变换器都一一作了介绍。基于这些技术,Prius的输出功率得到了显著提高。最后,展望了未来汽车发展要求对现有技术的挑战。  相似文献   

14.
将自适应遗传算法与序列二次规划算法结合构成混合遗传算法,用于求解混合动力汽车控制策略参数优化问题。一方面,分析并建立了控制策略参数优化的有约束非线性模型;另一方面,改进算法中自适应交叉和变异概率调整公式,并提出了序列二次规划算子与遗传算法结合的新方式。仿真结果表明,该算法提高了收敛速度和求解精度,保证了全局收敛性,在混合动力汽车控制策略参数优化中的应用是有效的。  相似文献   

15.
The integrity of electric motors in work and passenger vehicles can best be maintained by frequently monitoring its condition. In this paper, a signal processing-based motor fault diagnosis scheme is presented in detail. The practicability and reliability of the proposed algorithm are tested on rotor asymmetry detection at zero speed, i.e., at startup and idle modes in the case of a vehicle. Regular rotor asymmetry tests are done when the motor is running at a certain speed under load with stationary current signal assumption. It is quite challenging to obtain these regular test conditions for long-enough periods of time during daily vehicle operations. In addition, automobile vibrations cause nonuniform air-gap motor operation, which directly affects the inductances of electric motors and results in a noisy current spectrum. Therefore, it is challenging to apply conventional rotor fault-detection methods while examining the condition of electric motors as part of the hybrid electric vehicle (HEV) powertrain. The proposed method overcomes the aforementioned problems by simply testing the rotor asymmetry at zero speed. This test can be achieved at startup or repeated during idle modes where the speed of the vehicle is zero. The proposed method can be implemented at no cost using the readily available electric motor inverter sensors and microprocessing unit. Induction motor fault signatures are experimentally tested online by employing the drive-embedded master processor (TMS320F2812 DSP) to prove the effectiveness of the proposed method.   相似文献   

16.
驱动电机控制器是混联混动汽车最复杂的电器件之一,按照GB/T 36282-2018对混联混动驱动电机系统的EMC要求,简述了对应系统的EMC测试布局.通过分析驱动电机系统的主、配部件,及传导与辐射干扰对测试布局的影响,从而定义了系统的EMC测试工况并进行了验证,以确保测试工况正常运行.  相似文献   

17.
王诰 《电力电子》2007,5(2):39-42
本文研制了一种600V高压半桥式、用于驱动IGBT栅极的集成电路(IC)。本文将先介绍基于监测IGBT传感电流的短路保护功能,然后介绍电平下移功能。之后,还将讨论另一种我们研制的短路保护功能电路,它通过对集电极和栅极的监测实现对IGBT的短路保护。本文中的IC最多可以驱动带有几个外部部件的600A/600V等级IGBT。本电路不仅适用于工业逆变器,而且适用于混合动力电动汽车。  相似文献   

18.
This paper presents the analysis and novel controller design for a hybrid switched-capacitor bidirectional dc/dc converter. Features of voltage step-down, step-up, and bidirectional power flow are integrated into a single circuit. The novel control strategy enables simpler dynamics compared to a standard buck converter with an input filter, good regulation capability, low electromagnetic interference, lower source current ripple, ease of control, and continuous input current waveform in both modes of operation (buck and boost modes).   相似文献   

19.
混合动力电动汽车中电力电子技术应用综述   总被引:5,自引:0,他引:5  
文章综述了混合动力电动汽车的发展和基本结构,在此基础上,结合丰田汽车公司的最新一代混合动力电动汽车Prius THS Ⅱ,介绍了电力电子技术在混合动力电动汽车上的具体应用情况。最后,结合混合动力电动汽车的实际情况,提出了需要重点解决的问题。  相似文献   

20.
混合动力电动汽车中电力电子技术应用综述   总被引:2,自引:0,他引:2  
文章综述了混合动力电动汽车的发展和基本结构,在此基础上,结合丰田汽车公司的最新一代混合动力电动汽车Prius THS Ⅱ,介绍了电力电子技术在混合动力电动汽车上的具体应用情况。最后,结合混合动力电动汽车的实际情况,提出了需要重点解决的问题。  相似文献   

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