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2013 IEEE Vehicle Power and Propulsion Conference (VPPC)最新文献

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Optimizing Design of Magnetic Planetary Gearbox for Reduction of Cogging Torque 减小齿槽转矩的磁性行星齿轮箱优化设计
Pub Date : 2013-11-21 DOI: 10.1109/VPPC.2013.6671697
Fanchen Kong, Yeming Ge, Xiaoyong Zhu, L. Qiao, L. Quan
Compared with the conventional mechanical gears, magnetic gears have some advantages such as low mechanical loss, maintenance-free operation and inherent overload protection. However, the interaction among the permanent magnets on the each part can inevitably produce cogging torque and torque ripple, which may cause noise and vibration. In this paper, a new design method to reduce the cogging torque is presented for the magnetic planetary gearbox. In order to achieve the goal of minimizing the cogging torque and maximizing the transmission efficiency, a global optimization algorithm and the finite element analysis (FEA) are integrated to obtain the best pole arc combination. In the process of size optimization, two optimization methods, single parameter independent optimization and Quasi Newton optimization, are applied respectively. The investigation results indicate that by using the two kinds of optimization algorithm, the cogging torque and torque ripple can be reduced significantly while the transmission efficiency can be greatly improved.
与传统机械齿轮相比,磁性齿轮具有机械损耗低、免维护运行和固有过载保护等优点。然而,各部件上永磁体之间的相互作用不可避免地会产生齿槽转矩和转矩脉动,从而产生噪声和振动。本文提出了一种减小磁性行星齿轮箱齿槽转矩的新设计方法。为了实现齿槽转矩最小化和传动效率最大化的目标,将全局优化算法与有限元分析相结合,得到最佳极弧组合。在尺寸优化过程中,分别采用了单参数独立优化和准牛顿优化两种优化方法。研究结果表明,两种优化算法均能显著降低齿槽转矩和转矩脉动,提高传动效率。
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引用次数: 12
Size and Parameter Adjustment of a Hybrid Hydraulic Powertrain Using a Global Multi-Objective Optimization Algorithm 基于全局多目标优化算法的混合动力系统尺寸与参数调整
Pub Date : 2013-11-21 DOI: 10.1109/VPPC.2013.6671710
Bedatri Moulik, Mohammad Ali Karbaschian, D. Soffker
In this paper a new approach is developed to optimize the engine and hydraulic element size and their corresponding parameters of a hybrid hydraulic powertrain to given or assumed load/driving cycles. A multi objective optimization algorithm in combination with boundary condition regulation is applied in a loop. In addition, a new mixed optimization algorithm is proposed to overcome the problem of power management optimization by obtaining a better spread of solutions. The main contribution of the paper is the optimal selection of the motor and accumulator size thereby ensuring optimal vehicle dynamic and power consumption properties to different accumulator and engine sizes.
本文提出了一种新的方法来优化发动机和液压元件的尺寸及其相应参数的混合动力传动系统,以给定或假设的负载/行驶周期。结合边界条件调节的多目标优化算法应用于闭环。此外,提出了一种新的混合优化算法,通过获得更好的解的扩展性来克服电源管理优化问题。本文的主要贡献是电机和蓄能器尺寸的最佳选择,从而确保在不同蓄能器和发动机尺寸下车辆的动态和功耗性能最佳。
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引用次数: 10
A Fault-Tolerant Electronic Differential System of Electric Vehicles 一种电动汽车容错电子差速器系统
Pub Date : 2013-11-21 DOI: 10.1109/VPPC.2013.6671654
R. Wan, Guohai Liu, Duo Zhang, Wensheng Gong
This paper proposes an electronic differential system (EDS) for the dual-rear-wheel independently driven electric vehicle (EV), which is driven by five-phase fault-tolerant permanent magnet motors. The master-slave structure for this EDS is chosen and designed. The EDS adapts the speeds of each wheel according to the allocated requirement of the power and torque. Based on the Ackermann-Jeantand turning model, different speeds of two wheels are calculated. In addition, the reliable operated performance of the system is verified by simulations. As a result, the proposed system is proved to be very suitable for EVs.
提出了一种采用五相容错永磁电机驱动的双后轮独立驱动电动汽车电子差动系统。对该能谱仪的主从结构进行了选择和设计。EDS根据分配的功率和扭矩要求来调整每个车轮的速度。基于Ackermann-Jeantand转向模型,计算了两个车轮的不同转速。通过仿真验证了系统的可靠运行性能。结果表明,该系统非常适用于电动汽车。
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引用次数: 5
Development and Analysis of Doubly Salient Brushless DC Generators for Automobile Auxiliary Power Unit Application 汽车辅助动力装置用双凸极无刷直流发电机的研制与分析
Pub Date : 2013-11-21 DOI: 10.1109/VPPC.2013.6671674
Li Yu, Zhuoran Zhang, Yangguang Yan
The doubly salient brushless dc generator (DS-BLDCG) is constituted by a doubly salient electro-magnetic generator (DSEG) and the associated rectifier circuit. Due to its merits of simplicity, high robustness, low cost, and flexible control, the DS-BLDCG is suitable for the automobile auxiliary power unit (APU) application. Since no constraint is imposed to the number of phases of the onboard brushless dc generator, the polyphase DSEG can be applied. In this paper, a 3-phase 12/8-pole DSEG and a 4-phase 16/12-pole DSEG for the APU application are proposed. The taper stator pole and broadened rotor pole structure utilized to increase maximum output power is introduced in the 4-phase DSEG design. Based on the two-dimensional finite-element method (FEM) and field-circuit coupling analysis, a comprehensive comparison is presented. The 16/12-pole DS-BLDCG exhibits better fault tolerant capability, lower voltage ripple, and higher output power, while the copper consumption of the 12/8-pole DS-BLDCG is less than the 16/12-pole one. A prototype 12/8-pole DS-BLDCG for the APU applica-tion is designed and developed. Both the simulation and experimental results indicate that the developed DS-BLDCG is a promising option for automobile APU application.
双凸极无刷直流发电机(DS-BLDCG)由双凸极电磁发电机(DSEG)和相应的整流电路组成。DS-BLDCG具有结构简单、鲁棒性强、成本低、控制灵活等优点,适用于汽车辅助动力装置(APU)的应用。由于对板载无刷直流发电机的相数没有限制,因此可以应用多相DSEG。本文提出了一种适用于APU的3相12/8极DSEG和4相16/12极DSEG。在四相DSEG设计中,采用锥形定子极和加宽转子极结构来提高最大输出功率。基于二维有限元法和场路耦合分析,进行了全面的比较。16/12极DS-BLDCG具有更好的容错能力、更低的电压纹波和更高的输出功率,而12/8极DS-BLDCG的铜消耗小于16/12极DS-BLDCG。设计并开发了用于APU应用的12/8极DS-BLDCG原型。仿真和实验结果表明,所研制的DS-BLDCG是一种很有前途的汽车APU应用方案。
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引用次数: 1
Comparison of New Self-Decelerating Permanent-Magnet Wheel Motors with Two Topologies 两种新型自减速永磁轮式电机拓扑结构的比较
Pub Date : 2013-11-21 DOI: 10.1109/VPPC.2013.6671668
Ying Fan, Yong Luo, Li Zhang, M. Wei
This paper proposes a new self-decelerating permanent magnet (SDPM) wheel motor for Electric Vehicles (EVs). SDPM can be utilized for direct-driving areas by the advantages of the high torque density and high efficiency. In this paper, the key is the halbach array is not traditional and can be optimized, it can offer higher effective harmonic components of the magnetic field as well as the pull-out torque than the radial magnetized self-decelerating permanent-magnet (RSDPM) motor. In addition, the adoption of halbach arrays can reduce the flux density of the rotor yoke, the Iron losses can be reduced too. The magnetic field distributions and steady-state characteristics of these two topologies are compared by using the finite element method (FEM). The comparative analysis results shows that the new SDPM motor is particularly suitable for direct driving wheel motor in EVs.
提出了一种新型电动汽车用自减速永磁轮式电机。SDPM具有高扭矩密度和高效率的优点,可用于直驱领域。本文研究的关键在于halbach阵列具有不传统的、可优化的特点,与径向磁化自减速永磁(RSDPM)电机相比,halbach阵列可以提供更高的磁场有效谐波分量和拉出转矩。此外,采用哈尔巴赫阵列可以降低转子轭的磁通密度,也可以降低铁损。采用有限元法比较了两种拓扑结构的磁场分布和稳态特性。对比分析结果表明,新型SDPM电机特别适用于电动汽车的直接驱动轮电机。
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引用次数: 1
Accident Driver Model for Vehicular Ad-Hoc Network Simulation 车辆Ad-Hoc网络仿真中的事故驾驶员模型
Pub Date : 2013-11-21 DOI: 10.1109/VPPC.2013.6671728
Ying He, Changle Li, Hang Lin, Lina Zhu
Vehicular Ad Hoc Networks (VANETs) have been the research hotspot in wireless communication field recently. But implementing and testing applications or protocols in real world require prohibitive costs. Hence, most of the related researches depend on simulations. And mobility model is one of the most critical issues in the simulation study of VANETs. In this paper, we present a vehicular mobility model called ADM (Accident Driver Model) based on the concept of IDM (Intelligent Driver Model) to mimic the non-standard driver behaviors, and make the mobile nodes create accidents actively, while most of the mobility models don't support this feature. Then we implement ADM on the open-source traffic simulator VanetMobiSim. Finally, we investigate the influences of different mobility models on the performance of VANETs routing protocol. The simulation results show that we can evaluate routing performance correctly with ADM.
车载自组织网络(vanet)是近年来无线通信领域的研究热点。但是在现实世界中实现和测试应用程序或协议需要高昂的成本。因此,大多数相关研究都依赖于模拟。而机动性模型是VANETs仿真研究中的关键问题之一。本文基于IDM (Intelligent Driver model)的概念,提出了一种车辆移动模型ADM (Accident Driver model),以模拟非标准驾驶员行为,并使移动节点主动产生事故,而大多数移动模型不支持这一特性。然后我们在开源流量模拟器VanetMobiSim上实现了ADM。最后,我们研究了不同移动模型对VANETs路由协议性能的影响。仿真结果表明,该方法可以正确地评价路由性能。
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引用次数: 7
Lithium-Ion Battery Cells Voltage Equalization Using Optimized Circuit Parameters and Control Strategy 基于优化电路参数和控制策略的锂离子电池电压均衡
Pub Date : 2013-11-21 DOI: 10.1109/VPPC.2013.6671689
Y. Ma, G. Zhu, S. Qiu, D. Zhang, W. Chen, S. C. Wong
Lithium-ion battery voltage equalization is of great importance to maximize the capacity of the whole battery pack and keep cells away from over-charge or over-discharge damage.In this paper, analysis of the working principle of the voltage equalization circuit shows that the speed of the lithium-ion battery cells voltage equalization can be accelerated with optimized circuit parameters. Look- up table control strategy is presented based on the optimized circuit. Finally, simulation analysis is performed to illustrate the validity of the circuit parameters and control strategy.
锂离子电池电压均衡对于最大限度地提高整个电池组的容量,避免电池过充或过放电损伤具有重要意义。本文通过对电压均衡电路工作原理的分析表明,优化电路参数可以加快锂离子电池电芯电压均衡的速度。在优化电路的基础上提出了查表控制策略。最后进行了仿真分析,验证了电路参数和控制策略的有效性。
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引用次数: 2
Development of Thermal-Electrochemical Model for Lithium Ion 18650 Battery Packs in Electric Vehicles 电动汽车用锂离子18650电池组热电化学模型的建立
Pub Date : 2013-11-21 DOI: 10.1109/VPPC.2013.6671675
Parisa Amiribavandpour, W. Shen, A. Kapoor
A mathematical model is developed by coupling the electrochemical equation, the energy equation and the resistive network model to find the temperature behaviour of the battery in electric vehicles. The model is applied for a common battery pack in the battery industry under Japanese 1015 Mode EV driving cycle. Simulation results indicate that the maximum temperature for the battery pack occurs at the maximum discharge rate where the heat generation rate is very high. The simulation results also show that the portion of the heat conduction in heat dissipation can be increased by reducing the heat conduction resistance of the casing material and thus the effect of the heat conduction on temperature behaviour of the battery pack cannot be neglected.
将电化学方程、能量方程和电阻网络模型相结合,建立了电动汽车电池温度特性的数学模型。该模型应用于日本1015 Mode电动汽车行驶循环下电池行业常用的电池组。仿真结果表明,电池组的最高温度出现在最大放电速率下,此时的产热率非常高。模拟结果还表明,通过减小壳体材料的导热阻,可以增加散热中的导热部分,因此导热对电池组温度行为的影响是不可忽视的。
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引用次数: 4
Optimal System Efficiency and Fault-Tolerant Control of AFPM Machines Drive for Electric Bus Propulsion 电动客车AFPM电机驱动的最优系统效率与容错控制
Pub Date : 2013-11-21 DOI: 10.1109/VPPC.2013.6671696
Huawei Zhou, Guohai Liu, Jian Zhang, X. Wen, Jian Luo
The battery electric bus needs the electric motor to run efficiently over the entire speed range. And it also expects the motor has the ability of fault-tolerant operation. This paper aims at the demands for high efficiency and the fault-tolerant operation of propulsion system. With the good performance of axial-flux permanent magnet (AFPM) machine, the multi-disc AFPM machines are selected. According to different torque demand, road condition and the motor efficiency map, the electric vehicle (EV) controller promptly adjusts the number of working AFPM machines and the output torque of modular AFPM machine to improve the overall energy-efficiency. Based on the modular motor operation condition, the fault-tolerant strategy is adopted to remove the faulted motor in time to enhance the propulsion system reliability.
纯电动公交车需要电动机在整个速度范围内有效运行。同时要求电机具有容错运行能力。本文针对推进系统对高效、容错运行的要求。鉴于轴向磁通永磁(AFPM)电机的优良性能,选择了多盘式AFPM电机。电动汽车(EV)控制器根据不同的转矩需求、路况和电机效率图,及时调整AFPM机的工作数量和模块化AFPM机的输出转矩,以提高整体能效。基于模块化电机运行条件,采用容错策略,及时排除故障电机,提高推进系统可靠性。
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引用次数: 0
Analysis and Control of Smooth Transferring for Micro-Grid with Droop Control 基于下垂控制的微电网平滑传递分析与控制
Pub Date : 2013-11-21 DOI: 10.1109/VPPC.2013.6671664
Ling Fang, Jing Chen, Xin Chen, Chunying Gong, Yi Fan
The concept of micro-grid requires the system not only to operate in both islanding mode and grid- connected mode, but also transfer smoothly between these two modes. This paper presents a seamless transition strategy for droop-controlled inverters to operate in both islanding and grid-connected modes. The design method of the power outer loop and the stability of power loop are analyzed in quantity by mathematic modeling. Thus, the power loop is well designed to ensure the stability of the micro-grid. Then a new pre-synchronization control strategy is proposed for the micro-grid inverter to transfer smoothly between two different modes. Subsequently, simulation and experimental results show that the desired transient and steady-state responses can be obtained.
微电网的概念要求系统既能在孤岛模式和并网模式下运行,又能在孤岛模式和并网模式之间顺利切换。本文提出了一种垂控逆变器在孤岛和并网两种模式下的无缝过渡策略。通过数学建模对电力外环的设计方法和电力回路的稳定性进行了定量分析。因此,电力回路设计良好,保证了微电网的稳定运行。在此基础上,提出了一种新的预同步控制策略,使微网逆变器在两种模式之间顺利切换。仿真和实验结果表明,该方法可以获得理想的瞬态和稳态响应。
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引用次数: 6
期刊
2013 IEEE Vehicle Power and Propulsion Conference (VPPC)
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