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.
- 關鍵字:電池電動汽車 混合動力電動汽車 燃料電池電動汽車 能源危機 環境污染
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.
- 關鍵字:電池電動汽車 混合動力電動汽車 燃料電池電動汽車 能源危機 環境污染
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.
- 關鍵字:風力渦輪機 電力成本 動態模型 差動行星齒輪箱 水平軸風力機
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.
- 關鍵字:應力偶流體 多孔環形緊縮膜 流體動力 雷諾方程
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.
- 關鍵字:超音速邊界層 兼容表面 線性不穩定性
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).
- 關鍵字:運動學參數 剛體 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.
- 關鍵字:建築材料 物理性質 數值分析 土耳其
0:11:31
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納米儲能材料的製備與柔性混合型超電容器件研究（2）
- 第六屆中國儲能與動力電池及其關鍵材料學術研討與技術交流會——本片由中山大學化學與化學工程學院童葉翔教授介紹了以商用的碳布或自制備的聚苯胺和多孔碳薄膜作爲柔性導電基體，通過電化學方法和水熱法成功地製備了多種過渡金屬基正極材料和納米負極材料，幷開展了柔性混合型超電容器件的構造與儲能機理的研究內容。
- 關鍵字:混合型超電容 過渡金屬基儲能材料 柔性納米儲能材料 電化學方法 水熱法
0:18:42
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納米線儲能材料與器件
- 第六屆中國儲能與動力電池及其關鍵材料學術研討與技術交流會——高性能儲能器件是新能源汽車、大規模儲能、微納器件等發展的關鍵，但面臨着容量衰減快和高能量密度、高功率密度難以兼顧的等問題。本片由武漢理工大學材料複合新技術國家重點實驗室麥立強教授介紹將納米器件引人儲能材料研究、採用預嵌入的方式改善電極材料電導率、石墨烯半中空卷納米線導電緩衝結構等內容。
- 關鍵字:納米線 儲能材料 導電率 循環性能 比容量
0:22:25
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全釩液流電池的質子傳導膜研究與應用
- 第六屆中國儲能與動力電池及其關鍵材料學術研討與技術交流會——全釩液流電池是一種大規模蓄電儲能裝備，在可再生能源發電和節能技術領域發揮重要作用。本片由清華大學王保國教授介紹利用納米尺度孔徑膜材料的“篩分”效應和分子間親水/疏水相互作用誘導高分子溶液相分離的科學原理等內容。
- 關鍵字:儲能裝備 全釩液流電池 質子傳導膜 導電率