搜索结果: 1-15 共查到“动力与电气工程 Simulation”相关记录16条 . 查询时间(0.156 秒)
GridSpice:A Distributed Simulation Platform for the Smart Grid
Electric vehicles multiagent systems power system simulation
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2015/8/12
This paper describes GridSpice, a scalable opensource simulation framework for modeling, designing, and planning of the smart grid. GridSpice seamlessly integrates existing electric power simulation t...
云广直流工程锁相环功能分析及仿真研究(Analysis and Simulation on Phase Lock Loop Function Used in Yunnan-Guangdong UHVDC Project)
特高压直流输电 锁相环 PSCAD/EMTDC
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2010/8/17
介绍了云广特高压直流输电工程锁相环的实现原理,分析了锁相环中几个重要模块的功能和作用;利用PSCAD/EMTDC电磁暂态仿真程序建立了云广工程锁相环模型,研究了锁相环在交流母线频率阶跃、单相故障和三相故障等多种暂态情况下的响应特性。
IEC 61850数字化保护动模测试系统设计与实现(Design and Implementation of Dynamic Simulation Testing System for Digital Protection Based on IEC 61850 )
IEC 61850 数字化保护 保护测试 物理模型 动态模拟
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2010/8/17
IEC 61850标准的应用给变电站自动化系统带来了重大变革。在此类变电站中,保护装置可以直接从电子式互感器处获取所需的电流、电压数字量信息,并向智能开关控制器发送数字化跳闸命令。这种数字化保护与传统的微机型保护在硬件结构和信号处理方面都存在差异,传统的保护测试方法将不再适用。文章分析了基于IEC 61850的数字化保护装置的测试要求,提出通过对传统的物理模拟系统进行升级改造,建立符合要求的测试系...
THERMODYNAMIC SIMULATION OF AMMONIA-WATER ABSORPTION REFRIGERATION SYSTEM
ammonia-water sustainable development operating variables
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2009/10/14
The ammonia-water absorption refrigeration system is attracting increasing research interests, since the system can be powered by waste thermal energy, thus reducing demand on electricity supply. The ...
PARAMETRIC STUDY OF THE HEAT TRANSFER COEFFICIENT IN BI-DIMENSIONAL SMOLDERING SIMULATION
smoldering fixed bed heat transfer porous medium finite volume method
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2009/10/14
In this paper, we present the transient modeling results of 2-D forward smoldering in a cylindrical configuration filled with a foam porous material. The objective of the study is to explain the effec...
NUMERICAL SIMULATION OF POROUS BURNERS AND HOLE PLATE SURFACE BURNERS
gas combustion numerical simulation porous medium burners
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2009/10/13
In comparison to the free flame burners the porous medium burners, especially those with flame stabilization within the porous material, are characterized by a reduction of the combustion zone tempera...
A New Approach to the Simulation of the Hydraulic Valve Lifter of a Car Engine
Hydraulic lifter Valve Simulation Engine Modeling
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2009/10/12
A 2-degree of freedom model of the hydraulic valve lifter of an internal combustion engine is investigated using dierent system parameters. The oil compressibility and bulk modulus are integrated int...
Thermal Simulation of a Pyrotechnic Solid-Propellant Gas Generator
Thermal Simulation Pyrotechnic Solid-Propellant Gas Generator
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2010/1/15
Thermal Simulation of a Pyrotechnic Solid-Propellant Gas Generator.
柴油机缸内工作过程的数值模拟(Numerical Simulation of Working Process in the Cylinder of Diesel Engine)
柴油机 工作过程 多维
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2009/5/22
利用CFD软件AVL_Fire对YD490ZL型柴油机进气、压缩、燃烧过程进行了多维瞬态数值模拟。通过对柴油机工作过程中不同时刻气体流动、壁面传热、燃油喷雾雾化、颗粒形成等因素的分析,结果认为适当调整燃烧室中心相对气缸中心在X方向的距离,可以使燃烧更加充分、提高柴油机的燃油经济性;燃烧室换热系数不仅随空间位置变化,而且还随时间变化而各不相同,通过这种多维瞬态计算能够提供不同时刻、不同位置的换热系数...
柴油机功率强化前后气缸盖的温度场模拟与试验(Simulation and Experiment of Temperature Field on Diesel Engine Cylinder Head before and after Enhancement of Power)
柴油机 气缸盖 温度场
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2009/5/22
对功率强化前后的柴油机分别进行了性能仿真计算,进而确定了缸盖温度场计算的边界条件;利用有限元软件对气缸盖进行三维稳态热分析,并考虑了冷却水沸腾换热的影响;在该柴油机的单缸试验机上进行了稳态温度场测量试验,分析了试验和计算结果;得到了火力面边界条件的设置规律、稳态温度场随工况的变化关系和单缸机与多缸机的稳态温度场差别。
低比转数双吸离心泵回流问题的CFD研究(Simulation of Reverse Flow in Low Specific Speed Double Suction Centrifugal Pump)
双吸离心泵 回流 流场测试
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2009/5/22
针对某低比转数双吸离心泵在小流量工况下出现回流的问题,利用CFD技术对双吸泵及吸水室内部流场进行数值模拟研究,并提出定点速度值分析法,模拟流场测试试验中采用的动态探针采样测试系统,对回流问题进行研究。通过对叶轮进口相应测试点在不同流量下的速度变化进行统计分析,发现其变化规律和理论分析结果与以往文献中试验总结的规律变化一致。并根据曲线变化及理论分析结果,提出回流诱发流量点、回流稳定流量点、回流变化区...
两冲程HCCI自由活塞式内燃发电机仿真(Simulation of Two Stroke HCCI Free Piston Linear Alternator)
发电机 自由活塞 Matlab/Simulink Chemkin
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2009/5/22
综合利用Matlab/Simulink、Chemkin、电磁场有限元法对HCCI自由活塞式内燃发电机建立了仿真模型。分析了系统的运动特征,阐明了它与传统内燃机运动规律的差异。讨论了变负荷、燃空当量比下自由活塞式内燃机的变压缩比特性。仿真结果表明,自由活塞式内燃发电机能够根据外部参数调节压缩比,当工作在高压缩比下时,有利于提高燃烧效率、降低内燃机排放。
Simulation study on the performance of different direct torque control methods for permanent magnet synchronous machines
永磁同步电机 直接转矩控制 磁链误差补偿 空间矢量调制
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2008/3/10
提出一种用于永磁同步电动机的基于磁链误差矢量补 偿的直接转矩控制(EFVC-DTC)策略,给出了磁链误差矢 量的估计算法,并将该控制策略下的稳态和动态运行性能与 常规 DTC 进行比较。仿真及实验结果表明 EFVC-DTC 可以 使电力开关器件工作在基本固定的频率上,磁链和转矩脉动 显著减小,比常规 DTC 具有更优越的稳态性能,而动态转矩 响应几乎与常规 DTC 相同。
MODELLING AND SIMULATION OF STATIC VAR COMPENSATOR (SVC) IN POWER SYSTEM STUDIES BY MATLAB
FACTS SVC Var voltage control
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2010/1/11
This paper presents the modelling and simulation of Static Var Compensator
(SVC) in power system studies by MATLAB. In the first step, we have modeled
mathematically with MathCAD how to analyze the ...
An investigation of thermally stratified turbulent channel flow with temperature oscillation on the bottom wall by large eddy simulation
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2007/7/28
专著信息
书名
An investigation of thermally stratified turbulent channel flow with temperature oscillation on the bottom wall by large eddy simulation
语种
英文
撰写或编译
作者
Dong Y. H.,Lu X. Y.,Zhuang L. X
第一作者单位
出...