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2015 International Conference on Sustainable Mobility Applications, Renewables and Technology (SMART)最新文献

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A feasibility study of using waste cooking oil as a form of energy in Kuwait 在科威特利用废食用油作为一种能源的可行性研究
Naser Ali, M. Sebzali, Altaf Safar, Fadi Al-Khatib
A study was conducted in order to determine the feasibility of using used cooking oil as an alternative source of energy in Kuwait. The method used in this study involved data collection of all raw cooking oil produced in Kuwait and exported to it for the past three years, which represents the overall amount of cooking oil within the country. This is followed by a calculation of the estimate used cooking oil produced from its initial stage. The estimated amount is then forecasted to determine the future changes in quantities and compared to diesel fuel in terms of cost, energy production, and environmental effects. The research findings showed that used cooking oil can be utilized as a supportive source of energy in Kuwait with minimum environmental impact compared with diesel fuel.
进行了一项研究,以确定在科威特使用用过的食用油作为替代能源的可行性。本研究中使用的方法涉及收集过去三年科威特生产并出口到科威特的所有生食用油的数据,这代表了该国食用油的总量。然后计算从其初始阶段生产的估计使用的食用油。然后对估计的数量进行预测,以确定未来数量的变化,并将其与柴油燃料在成本、能源生产和环境影响方面进行比较。研究结果表明,在科威特,与柴油相比,用过的食用油可以作为一种辅助能源,对环境的影响最小。
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引用次数: 0
Increasing the produced power of building mounted wind turbines by optimization of roof geometry and utilization of solar panels 通过优化屋顶几何形状和利用太阳能电池板来增加建筑安装风力涡轮机的发电量
M. Tahani, N. Babayan, A. Pouyaei, M. Mirhosseini, A. Sedaghat
The desire for design of environmental friendly buildings has led engineers for utilizing the optimized shape of renewable energies. In this paper, the optimum translocation of solar panels has been studied for the purpose of capturing the maximum solar energy and controlling the wind direction for getting maximum power from the wind turbine. This study has been done for the city of Tehran and by PSO algorithm in MATLAB. Also, a building with solar panels has been modeled by using CFD simulation, and after parametric solving, the best angle for capturing the maximum solar insulation and the maximum wind power has been achieved. The results show that for capturing the maximum solar energy, the tilt angle of panel must be around 30 degrees and in this condition the wind velocity increases about 1.5 times, because of deflection of wind flow.
设计环境友好型建筑的愿望促使工程师们利用可再生能源的优化形状。本文研究了太阳能帆板的最佳配置,目的是捕获最大的太阳能,控制风向,使风力发电机组获得最大的功率。本文以德黑兰市为例,利用MATLAB中的粒子群算法进行了研究。采用CFD模拟方法对某太阳能板建筑进行了建模,通过参数化求解,获得了最大太阳能绝缘和最大风力发电的最佳角度。结果表明,为了最大限度地捕获太阳能,电池板的倾角必须在30度左右,在这种情况下,由于气流的偏转,风速增加了约1.5倍。
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引用次数: 1
Analysis of linear and nonlinear control of a three-phase/level PWM DC-AC neutral point clamped converter 三相/电平PWM直流-交流中性点箝位变换器的线性和非线性控制分析
Fatma Ezzahra Lahouar, M. Hamouda, J. Ben Hadj Slama
This paper introduces two control methods for multilevel PWM voltage source power converter (VSC). The first approach consists of a traditional cascaded linear PI regulator while the second presents a fast voltage control scheme applying a nonlinear input-output feedback linearization (IOFL). The system modeling is obtained with the state space model of the VSC in order to meet a constant dc-bus voltage and keep the input power at unity. By IOFL, the system is linearized and decoupled without leading any zero dynamics, and then a feedforward law is derived to account for model error. Simulation results demonstrate the effectiveness response of the two designed issues in steady state and prove that with nonlinear structures, output signal responses become faster than those in cascaded control schemes.
介绍了多电平PWM电压源功率变换器的两种控制方法。第一种方法由传统的级联线性PI调节器组成,而第二种方法提出了一种应用非线性输入输出反馈线性化(IOFL)的快速电压控制方案。为了满足直流母线电压恒定和输入功率一致的要求,利用VSC的状态空间模型对系统进行了建模。利用IOFL对系统进行线性化和解耦,不引入任何零动态,然后推导出考虑模型误差的前馈律。仿真结果证明了这两种设计方案在稳态下的有效响应,并证明了在非线性结构下,输出信号的响应速度比级联控制方案快。
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引用次数: 0
STATCOM-based 48-pulses three level GTO dedicated to VAR compensation and power quality improvement 基于statcom的48脉冲三电平GTO专用于无功补偿和电能质量改善
A. Abdellaoui, A. Yangui, A. Saidi, H. H. Abdallah
This paper deals with a novel technique for power quality improvement that considers an advanced STATCOM 48-pulse GTO voltage source converter. The technology of this converter is based on a phase shifting transformer (PST) and a three leg voltage source converter (VSC). The proposed concept enables the compensation of the reactive power by absorbing or generating a flow of current equivalent to the required reactive power. Furthermore, it enables the cancellation of the current harmonics. The performance of the proposed concept is simulated in the MATLAB environment considering a real-life case study.
本文讨论了一种改进电能质量的新技术,该技术考虑了一种先进的STATCOM 48脉冲GTO电压源变换器。该变换器的技术基于移相变压器(PST)和三支路电压源变换器(VSC)。所提出的概念能够通过吸收或产生相当于所需无功功率的电流来补偿无功功率。此外,它可以消除电流谐波。结合实际案例研究,在MATLAB环境中对所提概念的性能进行了仿真。
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引用次数: 5
Rotor notching for electromagnetic noise reduction of induction motors 用于感应电动机电磁降噪的转子缺口
Gui-yu Zhou, Jian-Xin Shen
This paper presents a new method by notching the induction motor (IM) rotor core to reduce the electromagnetic noise. The aim of the proposed strategy is to decrease the vibration caused by the rotor slot permeance harmonics. Firstly, principle of such electromagnetic noise reduction technique is presented. Then, finite element method (FEM) is used to calculate the Maxwell force harmonics and the vibration spectra of a 5.5kW sample induction motor and a corresponding modified motor. Finally, experimental results are given to validate the proposed technique, by testing the vibration and acoustic noise spectra of the two sample induction motors. It is shown that the modified motor has about 4.6 dB(A) reduction of the overall sound pressure level (SPL) comparing with the original one.
本文提出了一种通过在感应电动机转子铁心处开槽来降低电磁噪声的新方法。该策略的目的是减少转子槽磁导谐波引起的振动。首先,介绍了电磁降噪技术的原理。然后,采用有限元法计算了5.5kW样品型感应电机和相应改进型感应电机的麦克斯韦力谐波和振动谱。最后,通过对两种感应电机样品的振动和噪声谱进行测试,验证了该方法的有效性。结果表明,与原电机相比,改进后的电机总体声压级(SPL)降低了4.6 dB(A)左右。
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引用次数: 19
Thermal, power and packaging design of an HT-PEM fuel cell application for climatization and range extension in future Vehicle Concepts 热,动力和包装的HT-PEM燃料电池应用于气候和扩大范围在未来的概念车
F. Philipps
Today's electric vehicles do not offer sufficient range, especially if heating or air-conditioning is necessary. Fuel cells are able to provide electrical and thermal power with a high degree of efficiency. The DLR Institute of Vehicle Concepts is investigating different fuel cell technologies for use in mobile applications at ranges from 100 W in cargo pedelecs to systems of over 10 kW for passenger cars and up to 200 kW for rail applications, and to this end operates several test benches to test individual subsystems such as batteries, fuel cells, and electric machines up to complete vehicles on the roller test bench. This makes it possible to develop subsystems and prototypes and to parameterize and evaluate the concepts simulated.
今天的电动汽车不能提供足够的里程,特别是在需要加热或空调的情况下。燃料电池能够以很高的效率提供电能和热能。DLR车辆概念研究所正在研究不同的燃料电池技术,用于移动应用,从100w的货运踏板到10kw以上的乘用车系统,再到200kw的铁路应用系统。为此,DLR运行了几个试验台来测试单个子系统,如电池、燃料电池和电机,直到滚轮试验台上的整车。这使得开发子系统和原型以及参数化和评估模拟的概念成为可能。
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引用次数: 2
Environmental impact of developing large buildings close to residential environments 开发靠近居住环境的大型建筑对环境的影响
M. Zhunussova, M. Jaeger, D. Adair
High-resolution computational fluid dynamics (CFD) simulations have been performed to access the dispersion of air pollutants (CO2) emanating from traffic in a busy street and in the vicinity of a complex configuration of buildings located in Salmiya, Kuwait City. New buildings are planned for this area, and the work includes predictions for the dispersion of pollutants after their completion. The CFD simulations are based on calculated CO2 concentration levels based on traffic counts taken on location in Salmiya with the existing configuration of buildings in place. As the computer code used in this work has been validated previously it is thought that predictions on the addition of the new buildings are suitable as indicators of any potential air pollution problem areas. It was found for light winds the proposed new buildings helped reduce pollution in the vicinity of the residential buildings, but as the winds became more moderate to strong, there was a tendency for pollution to get trapped in the residential street.
在科威特市Salmiya,进行了高分辨率计算流体动力学(CFD)模拟,以获取繁忙街道和复杂结构建筑物附近交通产生的空气污染物(CO2)的扩散情况。该地区计划建造新的建筑物,工作包括对建筑物建成后污染物扩散的预测。CFD模拟是根据Salmiya的交通流量计算出的二氧化碳浓度水平,并根据现有建筑的配置进行计算。由于在这项工作中使用的计算机代码先前已被验证,因此认为对新建筑物的增加的预测适合作为任何潜在空气污染问题区域的指标。研究发现,在微风的情况下,拟建的新建筑有助于减少住宅附近的污染,但随着风变得更温和到更强,污染有被困在住宅街道的趋势。
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引用次数: 3
Quality of tap drinking water in Kuwait: Physicochemical characteristics 科威特自来水质量:理化特征
A. Ahmed
Adequate clean drinking water is essential for any community to sustain. Over the last two decades, Quality of drinking water in terms of physical, chemical and biological safety has come to focus of research efforts due to its effects on human health. As a result, various studies were conducted to assess the quality of drinking water all over the world. Kuwait experiences an extremely hot long summers with temperatures reach up to 50° and very low amounts of rainfall. Kuwait depends on sea water distillation to meet the rapidly increasing demand on drinking water. This study aims to assess the physicochemical parameters including the total dissolved solid (TDS), pH, electrical conductivity and sodium concentration of tap water in Kuwait. The outcomes of this study helps in evaluating the quality of centrally treated water in Kuwait. Samples were taken different residential areas covering all the six governorates in the state of Kuwait. All physicochemical parameters were found to be within the standard guidelines. Minor variations were found while comparing the values of pH, TDS, and electrical conductivity between tap and domestic bottled water. TDS levels in tap water samples increases about four its original value once they are produced in the distillation plant. Water supply authorities need to consider a periodical maintenance for the pipeline distribution network. They should also lead a strict monitoring system to assure that the physicochemical parameters of the centrally treated water are always with accordance to the standards guidelines.
充足的清洁饮用水对任何社区的维持都至关重要。在过去二十年中,由于饮用水质量对人类健康的影响,它在物理、化学和生物安全方面已成为研究工作的重点。因此,进行了各种研究来评估世界各地的饮用水质量。科威特经历了极其炎热的夏季,气温高达50°c,降雨量非常少。科威特依靠海水蒸馏来满足对饮用水迅速增长的需求。本研究旨在评估科威特自来水的理化参数,包括总溶解固形物(TDS)、pH、电导率和钠浓度。本研究的结果有助于评估科威特中央处理水的质量。样本是在科威特所有六个省的不同居民区采集的。所有物理化学参数均在标准准则范围内。在比较自来水和家用瓶装水的pH值、TDS值和电导率时,发现了微小的差异。自来水样品一旦在蒸馏厂生产出来,其TDS含量就会增加约四倍。供水主管部门需要考虑对管网进行定期维护。他们还应该领导一个严格的监测系统,以确保中央处理水的物理化学参数始终符合标准准则。
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引用次数: 4
Wind farm active power dispatch for output power maximizing based on a wind turbine control strategy for load minimizing 基于负荷最小化风电机组控制策略的输出功率最大化风电场有功功率调度
Baohua Zhang, Weihao Hu, P. Hou, M. Soltani, Zhe Chen
Inclusion of the wake effect in the wind farm control design (WF) can increase the total captured power by wind turbines (WTs), which is usually implemented by derating upwind WTs. However, derating the WT without a proper control strategy will increase the structural loads, caused by operation in stall mode. Therefore, the WT control strategy for derating operation should be considered in the attempt at maximizing the total captured power while reducing structural loads. Moreover, electrical power loss on the transmission system inside a WF is also not negligible for maximizing the total output power of the WF. In this paper, an optimal active power dispatch strategy based on a WT derating strategy and considering the transmission loss is proposed for maximizing the total output power. The active power reference of each WT is chosen as the optimization variable. A partial swarm optimizing algorithm is used for solving the problem. Simulation results show the effectiveness of the proposed strategy.
在风电场控制设计(WF)中包含尾流效应可以增加风力涡轮机(WTs)的总捕获功率,这通常通过降额逆风风力涡轮机来实现。然而,在没有适当控制策略的情况下降低WT将增加结构载荷,导致失速模式下的运行。因此,在降低结构载荷的同时,应考虑降额操作的小波变换控制策略。此外,为了最大限度地提高WF的总输出功率,WF内部传输系统上的电能损耗也是不可忽略的。本文提出了一种基于小波降额策略并考虑传输损耗的最优有功功率调度策略,以使总输出功率最大化。选取各小波变换的有功功率基准作为优化变量。采用部分群优化算法求解该问题。仿真结果表明了该策略的有效性。
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引用次数: 6
Research of smart grid cyber architecture and standards deployment with high adaptability for Security Monitoring 面向安全监控的高适应性智能电网网络架构及标准部署研究
R. Hu, Weihao Hu, Zhe Chen
Security Monitoring is a critical function for smart grid. As a consequence of strongly relying on communication, cyber security must be guaranteed by the specific system. Otherwise, the Demand Response (DR) signals and bidding information can be easily forged or intercepted. Customers' privacy and safety may suffer huge losses. Although OpenADR specifications provide continuous, secure and reliable two-way communications in application level defined in ISO model, which is also an open architecture model for adopted security systems, no specific or proprietary technologies is restricted to OpenADR itself. It is significant to develop a security monitoring system. This paper discussed the cyber architecture of smart grid with high adaptability for security monitoring. An adaptable structure with Demilitarized Zone (DMZ) is studied. Focusing on this network structure, the rational utilization of standards is investigated to provide a smart grid communication network with better performance and higher security, whilst it avoids the extra investment of an individual security monitoring network as far as possible.
安全监控是智能电网的一项重要功能。由于高度依赖通信,网络安全必须有具体的制度保障。否则,需求响应(DR)信号和投标信息很容易被伪造或截获。客户的隐私和安全可能遭受巨大损失。虽然OpenADR规范在ISO模型中定义的应用层提供了连续、安全、可靠的双向通信,ISO模型也是采用的安全系统的开放架构模型,但OpenADR本身并没有特定的或专有的技术。开发安全监控系统具有重要意义。本文讨论了具有高自适应能力的智能电网的网络体系结构。研究了一种具有非军事区(DMZ)的自适应结构。针对这种网络结构,研究合理利用标准,提供性能更好、安全性更高的智能电网通信网络,同时尽可能避免单独的安全监控网络的额外投资。
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引用次数: 5
期刊
2015 International Conference on Sustainable Mobility Applications, Renewables and Technology (SMART)
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