0:15:07
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The Power Transmission Technique for Hybrid Electric Vehicles（1）
- The 6th Asia-Pacific Power and Energy Engineering Conference (APPEEC 2014)——To solve the problem of energy crisis and environmental pollution, electric vehicle is considered as one of the essential solutions. There are mainly three types of electric vehicles: battery electric vehicles, hybrid electric vehicles, and fuel cell electric vehicles. With the technology of batteries considered, hybrid electric vehicles are more realistic. There are three kinds of hybrid electric vehicles: series, parallel, and series-parallel hybrid electric vehicles. The topologies and features of different hybrid electric vehicles are introduced. A kind of series-parallel hybrid electric vehicle, which is called compound-structure permanent-magnet synchronous machine (CS-PMSM), is discussed deeply.
- Keyword:电池电动汽车 混合动力电动汽车 燃料电池电动汽车 能源危机 环境污染
0:16:25
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The Power Transmission Technique for Hybrid Electric Vehicles（2）
- The 6th Asia-Pacific Power and Energy Engineering Conference (APPEEC 2014)——To solve the problem of energy crisis and environmental pollution, electric vehicle is considered as one of the essential solutions. There are mainly three types of electric vehicles: battery electric vehicles, hybrid electric vehicles, and fuel cell electric vehicles. With the technology of batteries considered, hybrid electric vehicles are more realistic. There are three kinds of hybrid electric vehicles: series, parallel, and series-parallel hybrid electric vehicles. The topologies and features of different hybrid electric vehicles are introduced. A kind of series-parallel hybrid electric vehicle, which is called compound-structure permanent-magnet synchronous machine (CS-PMSM), is discussed deeply.
- Keyword:电池电动汽车 混合动力电动汽车 燃料电池电动汽车 能源危机 环境污染
0:15:32
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Behavior of HAWT with differential planetary gearbox
- The 6th Asia-Pacific Power and Energy Engineering Conference (APPEEC 2014)——A dynamic model for simulating behavior of a horizontal axis wind turbine (HAWT) with differential planetary gearbox is developed. The aerodynamic load applied to the wind turbine connected with the carrier is described using the quasi-steady approach. The control torque is assumed to be applied to the external ring of the gearbox. Steady regimes of the device are analyzed, and their stability is studied. For the case of constant control torque, power costs are esti-mated required for preserving constant angular speed of the generator.
- Keyword:风力涡轮机 电力成本 动态模型 差动行星齿轮箱 水平轴风力机
0:19:20
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Behaviour of Couple Stress Fluids in Porous Annular Squeeze Films
- The 5th ENGII Conference——The laminar squeeze flow of an incompressible couple stress fluid between porous annular disks is studied using hydrodynamic lubrication theory. The modified Reynolds' equation is derived using Stokes microcontinuum theory and is solved analytically. Analytical expressions for the squeeze film pressure and the load carrying capacity are obtained in terms of Fourier-Bessel series. Numerical results are obtained for the sinusoidal motion of the upper disk. The effect of couple stresses and that of porous facing on the squeeze film behaviour are analysed through the squeeze film pressure and the load carrying capacity. Further, the equation for the gap width between the disks is obtained from the inverse problem.
- Keyword:应力偶流体 多孔环形紧缩膜 流体动力 雷诺方程
0:14:58
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Linear Instability of the Supersonic Boundary Layer on a Compliant Surface
- The 5th ENGII Conference——In the paper the influence of flexible covering properties on the linear development of disturbances in a supersonic boundary layer is investigated for Mach numbers M = 1.0, 2.0, 5.3, 6.0. As a model of a covering the porous plate closed by a flexible film is used. In the absence of gas in pores it is established that the flexible covering stabilizes boundary layer in the area of large Reynolds numbers and destabilizes it at small Reynolds numbers. Joint influence of the thickness and tension of a film leads to an appearance of additional unstable waves. For filled with gas pores the researches are conducted as taking into account losses of energy of disturbances in pores and in their absence. Calculations without power losses indicate possibility of existence of an absolute instability of the boundary layer on the flexible surface. The damping properties of a flexible covering connected with power losses in pores reduce their stabilizing role.
- Keyword:超音速边界层 兼容表面 线性不稳定性
0:12:19
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New kinematic parameters of the finite rotation of a rigid body
- The 5th ENGII Conference——A new family of kinematic parameters for the orientation of a rigid body (global and local) is presented and described. All the kinematic parameters are obtained by mapping the variables onto a corresponding orientated subspace (hyperplane).
- Keyword:运动学参数 刚体 映射
0:09:01
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Numerical and Experimental Investigation on Physical Properties of Some Stones Existing in Several Regions of Turkey
- The 5th ENGII Conference——In present study, some of physical properties of some stones existing in several regions of Turkey are held under microscope. Some measurements such as heat conductivity, heat capacity, water absorption, respiration and mechanical strength were performed to the specimens from various regions of Turkey. After that, a numerical analysis has been performed by using ANSYS software, which uses finite element methodology.
- Keyword:建筑材料 物理性质 数值分析 土耳其
0:11:31
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纳米储能材料的制备与柔性混合型超电容器件研究（2）
- 第六届中国储能与动力电池及其关键材料学术研讨与技术交流会——本片由中山大学化学与化学工程学院童叶翔教授介绍了以商用的碳布或自制备的聚苯胺和多孔碳薄膜作为柔性导电基体，通过电化学方法和水热法成功地制备了多种过渡金属基正极材料和纳米负极材料，幷开展了柔性混合型超电容器件的构造与储能机理的研究内容。
- Keyword:混合型超电容 过渡金属基储能材料 柔性纳米储能材料 电化学方法 水热法
0:18:42
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纳米线储能材料与器件
- 第六届中国储能与动力电池及其关键材料学术研讨与技术交流会——高性能储能器件是新能源汽车、大规模储能、微纳器件等发展的关键，但面临着容量衰减快和高能量密度、高功率密度难以兼顾的等问题。本片由武汉理工大学材料复合新技术国家重点实验室麦立强教授介绍将纳米器件引人储能材料研究、采用预嵌入的方式改善电极材料电导率、石墨烯半中空卷纳米线导电缓冲结构等内容。
- Keyword:纳米线 储能材料 导电率 循环性能 比容量
0:22:25
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全钒液流电池的质子传导膜研究与应用
- 第六届中国储能与动力电池及其关键材料学术研讨与技术交流会——全钒液流电池是一种大规模蓄电储能装备，在可再生能源发电和节能技术领域发挥重要作用。本片由清华大学王保国教授介绍利用纳米尺度孔径膜材料的“筛分”效应和分子间亲水/疏水相互作用诱导高分子溶液相分离的科学原理等内容。
- Keyword:储能装备 全钒液流电池 质子传导膜 导电率