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2019 International Conference of Computer Science and Renewable Energies (ICCSRE)最新文献

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The impact of the thermos-physical parameters of insulation on the energy performance of a building in Morocco 保温材料的热物理参数对摩洛哥一座建筑能源性能的影响
Pub Date : 2019-07-23 DOI: 10.1109/ICCSRE.2019.8807480
Badr Chegari, M. Tabaa, F. Moutaouakkil, E. Simeu, H. Medroumi
In this work, we present the effect of the thermos-physical parameters of different thermal insulators on the energy performance of a typical Moroccan R+1 building in three different climates: Marrakech, Casablanca and Tangier. This has been achieved through dynamic thermal simulation (DTS) using TRNSYS software. The results show the positive impact of thermal insulation on the building's energy performance, allowing the building to comply with the RTCM and to reduce heating and cooling needs by up to 21.01%, 22.86% and 26.53% respectively in Casablanca, Marrakech and Tangier.
在这项工作中,我们展示了在马拉喀什、卡萨布兰卡和丹吉尔三种不同气候条件下,不同隔热材料的热物性参数对典型摩洛哥R+1建筑能源性能的影响。这是通过TRNSYS软件的动态热模拟(DTS)实现的。结果表明,保温对建筑能源性能的积极影响,使卡萨布兰卡、马拉喀什和丹吉尔的建筑符合RTCM,并分别减少了21.01%、22.86%和26.53%的采暖和制冷需求。
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引用次数: 5
How energy consumption in the cloud data center is calculated 云数据中心的能耗是如何计算的
Pub Date : 2019-07-22 DOI: 10.1109/ICCSRE.2019.8807458
S. Diouani, H. Medromi
Energy efficiency has turned into an undeniably essential worry in data centers as a result of issues related to energy consumption, including capital costs, working costs, and natural effect. While energy wastage, because of imperfect utilization of facilities and IT hardware, has to a great extent been decreased using best-practice advances, tending to energy loss in IT equipment, still requires the plan and usage of energy-aware resource management frameworks. Various methods aimed to enhance the energy efficiency in data centers have been developed in the field related to the development of resource allocation. In fact, researchers and scientists utilize numerous ways to improve effectiveness for optimized power and performance: scaling virtual machine and server preparing abilities to minimize energy consumption, enhancing resource use through exploiting its heterogeneity and consolidating the workload. To accomplish these objectives, there is multiple proposes models, calculations, algorithms, techniques, and procedures that diminish energy use using virtual machine scaling, virtual machine sizing for CPU and memory, CPU frequency adjustment, and also equipment power control for resource allocation in the server-level. In this context, we present different formulas for calculating energy consumption in cloud data centers and we propose a simplified and completed deduced formula for energy consumption estimation.
由于与能源消耗相关的问题,包括资本成本、工作成本和自然影响,能源效率已成为数据中心不可否认的基本担忧。由于设施和IT硬件的利用不完善,能源浪费在很大程度上已经通过使用最佳实践的进步得到了减少,但IT设备中的能源损失倾向仍然需要计划和使用节能资源管理框架。在与资源分配发展相关的领域中,各种旨在提高数据中心能源效率的方法已经被开发出来。事实上,研究人员和科学家利用许多方法来提高优化电源和性能的有效性:扩展虚拟机和服务器准备能力以最大限度地减少能源消耗,通过利用其异构性和整合工作负载来增强资源使用。为了实现这些目标,有多种建议模型、计算、算法、技术和过程,它们使用虚拟机缩放、虚拟机调整CPU和内存大小、CPU频率调整以及服务器级资源分配的设备电源控制来减少能源使用。在此背景下,我们提出了不同的计算云数据中心能源消耗的公式,并提出了一个简化和完整的能源消耗估算推导公式。
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引用次数: 7
Optimization of Energy Consumption in Swarms of Robots 机器人群中能量消耗的优化
Pub Date : 2019-07-22 DOI: 10.1109/ICCSRE.2019.8807472
Turzo Ahsan Sami, S. Momen
This paper presents an agent based computational model in which swarms of autonomous mobile robots have the task to clean the environment. The robots collect debris from the environment and dump them in a designated arena. The energy of each robot decreases as it works and when the energy becomes lower than a fixed threshold, it switches to the charging mode. Under this mode, a robot goes to a destined area to charge itself up. Besides just gaining energy from the designated charging area, they can also share energy with each other when required. The way the robots share energy is inspired by the trophallactic behavior displayed by ant colonies. The model proposed in this paper is inspired by the behavior and group interaction of social insects, particularly by that of the ants. Genetic Algorithm (GA) has been applied on the model to search the model0s parameter space to obtain the particular set of parameter values for which the model consumes the least energy. Experimental results show that incorporating GA to tune the parameter values improve the performance of the swarm in terms of the energy consumption over earlier strategies.
本文提出了一种基于智能体的计算模型,其中自主移动机器人群具有清洁环境的任务。机器人从环境中收集碎片,并将它们倾倒在指定的场地。每个机器人在工作过程中能量会减少,当能量低于固定阈值时,它会切换到充电模式。在这种模式下,机器人会到一个指定的区域给自己充电。除了从指定的充电区域获取能量外,它们还可以在需要时彼此共享能量。机器人分享能量的方式是受到蚁群表现出的营养性行为的启发。本文提出的模型的灵感来自于群居昆虫的行为和群体互动,特别是蚂蚁的行为和群体互动。在模型上应用遗传算法(Genetic Algorithm, GA)对模型的参数空间进行搜索,得到模型消耗能量最少的特定参数值集。实验结果表明,结合遗传算法对参数值进行调优,在能量消耗方面提高了群体的性能。
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引用次数: 1
Modeling and Optimization of a Grid Connected Photovoltaic Energy Conversion System Based on Advanced Nonlinear Control 基于先进非线性控制的并网光伏能量转换系统建模与优化
Pub Date : 2019-07-22 DOI: 10.1109/ICCSRE.2019.8807535
M. Mohamed, Zazi Malika, Zazi Khalida, Chorfi Jawad
The electrical characteristics of photovoltaic generators are nonlinear, they are depend on the climatic conditions and the load, and they admitted one only optimum operating point. Therefore, to maximize the energy produced by the PV system, it is necessary to track the maximum power point. Nevertheless to inject this maximum energy produced in the grid, it must be converted in an alternative by ensuring a reliable transfer with a unit power factor and a currents form purely sinusoidal. In this paper, a nonlinear method based on sliding mode (SMC) is applied to control and optimization of a grid connected photovoltaic energy conversion system. In this method, it is essential to define a sliding surface that presents the desired state, then we calculate the appropriate control law to achieve this desired state. To validate the theory results obtained by the proposed control strategy, the simulations has been affected on the Simulink/Matlab software for a 100Kw PV system. The simulation results are shown the effectiveness of the proposed technique to achieve the optimal operation of grid connected photovoltaic energy conversion system.
光伏发电机组的电特性是非线性的,受气候条件和负荷的影响,且只允许一个最佳工作点。因此,为了使光伏系统产生的能量最大化,有必要跟踪最大功率点。然而,为了将产生的最大能量注入电网,必须通过确保具有单位功率因数和纯正弦电流形式的可靠传输,将其转换为替代方案。本文将基于滑模(SMC)的非线性方法应用于并网光伏能量转换系统的控制与优化。在该方法中,首先定义一个表示期望状态的滑动面,然后计算适当的控制律来实现该期望状态。为了验证所提出控制策略的理论结果,在Simulink/Matlab软件上对100Kw光伏系统进行了仿真。仿真结果表明,该方法能够有效地实现并网光伏能量转换系统的优化运行。
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引用次数: 0
Patient Radiation Risks during CT Brain procedure in Moroccan hospitals 摩洛哥医院CT脑部手术患者辐射风险
Pub Date : 2019-07-22 DOI: 10.1109/ICCSRE.2019.8807579
M. Aabid, S. Semghouli, B. Amaoui, M. Fahssi, Oum Keltoum Hakam, A. Choukri
Computed Tomography (CT) of Brain is a diagnostic device used to create detailed pictures of the skull, brain, paranasal sinuses, and eye sockets; however, patients are exposed to great radiation doses and the likelihood of a cancer occurrence and other biological effects is increased. The objectives of this study were to measure the patient radiation dose during a brain CT procedure and to assess the radiation dose and biological effects.The study was conducted in six radiology departments equipped with various CT machines calibrated according to international protocols. A total of 180 patients underwent brain examinations. The effective radiation dose, cancer and biological risks were estimated using the International Commission on Radiological Protection (ICRP) conversion factors.The effective dose for Brain CT procedure in Moroccan hospital varied between (0,80± 0,12) and (5,47± 1,51) mSv with an average value of (2,96± 0,67) mSv. The cancer risk per Brain procedure ranged between 44 and 301 with an average value of 163 per 1 million procedures. The hereditary risk per Brain procedure ranged between 2 and 11 with an average value of 6 per 1 million procedures. The effective dose and risk factors for brain CT scan examination are higher than the national averages for one third of our hospitals.The cancer and hereditary risks are significant during multiple image acquisition. The study revealed that 66% of the procedures with normal findings. However, staff should optimize the radiation dose during Brain procedures.
脑部计算机断层扫描(CT)是一种诊断设备,用于创建头骨、大脑、鼻窦和眼窝的详细图像;然而,病人暴露在大剂量的辐射下,癌症发生和其他生物效应的可能性增加。本研究的目的是测量患者在脑部CT过程中的辐射剂量,并评估辐射剂量和生物学效应。这项研究是在六个放射科进行的,这些放射科配备了各种根据国际协议校准的CT机。共有180名患者接受了脑部检查。利用国际放射防护委员会(ICRP)换算系数估算了有效辐射剂量、癌症和生物风险。摩洛哥医院脑CT手术的有效剂量在(0,80±0,12)~(5,47±1,51)mSv之间,平均值为(2,96±0,67)mSv。每次脑部手术的癌症风险在44到301之间,平均每100万次手术的癌症风险为163。每次脑部手术的遗传风险范围在2到11之间,平均每100万次手术的遗传风险为6。三分之一的医院脑CT扫描检查的有效剂量和危险因素高于全国平均水平。在多重图像采集过程中,癌症和遗传风险是显著的。研究显示66%的手术结果正常。然而,在脑部手术过程中,工作人员应该优化辐射剂量。
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引用次数: 2
Bazaar Mind: A Virtual Shopping Assistant Bazaar Mind:虚拟购物助理
Pub Date : 2019-07-22 DOI: 10.1109/ICCSRE.2019.8807446
Taskin Fatema, Alif Elahi Khan, Mithi Shams, Md. Golam Saklain Hossain, S. Momen
Bangladesh is one of the most densely populated countries in the world. With vast amount of people joining the workforce and huge traffic jam in the capital, it becomes very difficult for city dwellers to manage family life. In this paper, we present a simple shopping assistant that keeps track of the items needs to be purchased by the user. It also searches in the background for the desired items and reports to the user on close by shops where the items would be available. The general acceptance of this app is found to be quite high. The novelty of this paper is twofold: (1) designing a shopping assistant, and (2) analysing the user acceptability. In future, we plan to incorporate a recommendation system.
孟加拉国是世界上人口最稠密的国家之一。随着大量的人加入劳动力队伍和首都严重的交通堵塞,城市居民管理家庭生活变得非常困难。在本文中,我们介绍了一个简单的购物助手,它可以跟踪用户需要购买的物品。它还可以在后台搜索所需的商品,并向用户报告附近有该商品的商店。人们发现这款应用的普遍接受度相当高。本文的新颖之处在于:(1)设计了一个购物助手,(2)分析了用户的可接受性。未来,我们计划加入一个推荐系统。
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引用次数: 1
Recent Advancements and Developments for Electric Vehicle Technology 电动汽车技术的最新进展与发展
Pub Date : 2019-07-22 DOI: 10.1109/ICCSRE.2019.8807726
Haji Zakaria, Mounir Hamid, E. Abdellatif, Amarir Imane
Increasing the use of electric vehicles (EVs) has been offered as a double option to decrease fuel energy consumption and greenhouse gas emissions (GHG), in a wide effort to mitigate the bad environmental impact and climate change. Recently, the EV industry has been known as a huge development. This paper covers a broad array of subjects linked to EV technology, such as the main categories of these vehicles and their technical characteristics: fuel energy economy, environmental impact and market evolution. Particularly, three principal categories of EV, mainly hybrid electric vehicles (HEVs), plug-in electric vehicles (PHEVs) and battery electric vehicles (BEVs) are presented in detailed. Moreover, the present paper analyzes and compares these types of vehicles and both summarizes and discusses the recent advancements and challenges of EV technology. We can conclude that HEVs can play an important part in preparing for the transition to fully EVs. The progress at the battery level will accelerate this transition as long as issues of autonomy, durability, and cost are resolved.
增加电动汽车(ev)的使用已被提供作为减少燃料能源消耗和温室气体排放(GHG)的双重选择,以减轻对环境的不良影响和气候变化。最近,电动汽车行业被称为一个巨大的发展。本文涵盖了与电动汽车技术相关的广泛主题,例如这些车辆的主要类别及其技术特征:燃料能源经济性,环境影响和市场演变。详细介绍了电动汽车的三大类,即混合动力汽车(hev)、插电式电动汽车(phev)和纯电动汽车(bev)。此外,本文还对这些类型的车辆进行了分析和比较,并总结和讨论了电动汽车技术的最新进展和挑战。我们可以得出结论,混合动力汽车可以在准备向纯电动汽车过渡的过程中发挥重要作用。只要自动驾驶、耐用性和成本问题得到解决,电池层面的进展将加速这一转变。
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引用次数: 21
Nonlinear ADRC Applied on Wind Turbine Based on DFIG Operating at its Partial Load 基于DFIG部分负荷运行的非线性自抗扰控制器在风电机组上的应用
Pub Date : 2019-07-22 DOI: 10.1109/ICCSRE.2019.8807773
El Mahfoud Boulaoutaq, M. Kourchi, Azeddine Rachdy
This paper deals the modeling and synthesis of nonlinear control laws for the control of a wind turbine based on the DFIG (Fig. 1). In a first step, the objective is to build a model of a wind energy conversion system WECS, such as the combination of the aerodynamic and mechanical part integrating the turbine - the multiplier - the MPPT technique, and the electrical part DFIG associated with an active and reactive power control, based on a stator flux oriented control according to a dq-axis frame. After that, three laws of nonlinear control by ADRC Strategy (Active Disturbance Rejection Control) are applied to the MPPT method, and then to the converter RSC (Rotor Side Converter) both in hypo and in hyper synchronous mode of operation. Finally, the results obtained for each approach will be discussed and compared with the linear control technique. The system under study and the proposed controls are simulated using Matlab-Simulink.
本文研究了基于DFIG的风力机非线性控制律的建模和综合(图1)。首先,目标是建立风能转换系统WECS的模型,如风力机-乘法器- MPPT技术的气动和机械部分的组合,以及与有功和无功控制相关的电气部分DFIG。基于dq轴框架的定子磁链定向控制。然后,将自抗扰控制(ADRC)策略的三个非线性控制规律应用于MPPT方法,然后应用于低同步和超同步运行模式下的变换器RSC(转子侧变换器)。最后,将讨论每种方法的结果,并与线性控制技术进行比较。利用Matlab-Simulink对所研究的系统和所提出的控制方法进行了仿真。
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引用次数: 5
Parameter Identification of Photovoltaic Generators Using an Analytical Approach and Iterative Method 基于解析法和迭代法的光伏发电机组参数辨识
Pub Date : 2019-07-22 DOI: 10.1109/ICCSRE.2019.8807753
Abdelaaziz Benahmida, N. Maouhoub, H. Sahsah, Hamza Mokhliss, K. Rais
In this paper, a technique based on analytical formulation and iterative method is presented to estimate the five PV generator parameters from their experimental I-V curve and using the single diode model. This method calculates analytically the series resistance using three remarkable points of the I-V characteristics. The parallel resistance, the saturation current and the photo-current are calculated using a linear least squares method and solving a linear system of three equations. The ideality factor is extracted by an iterative procedure that optimizes the NRMSE value. The method is validated using experimental set of two PV generator cases: RTC commercial solar cell and KC200GT PV module. The results have shown best agreement with those published previously in the literature.
本文提出了一种基于解析公式和迭代法的技术,利用单二极管模型,从实验的I-V曲线估计出5个光伏发电机的参数。该方法利用I-V特性的三个显著点解析计算串联电阻。采用线性最小二乘法求解三方程线性方程组,计算了并联电阻、饱和电流和光电流。通过优化NRMSE值的迭代过程提取理想因子。利用RTC商用太阳能电池和KC200GT光伏组件两种光伏发电机组的实验装置对该方法进行了验证。研究结果与先前在文献中发表的结果最吻合。
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引用次数: 4
The behavior of a building using RES energy and A control strategy of DC microgrid 使用可再生能源的建筑物的行为及直流微电网的控制策略
Pub Date : 2019-07-22 DOI: 10.1109/ICCSRE.2019.8807673
Mouna Abarkan, B. Abdelilah, N. M'Sirdi, El Hossain Abarkan
Buildings are the highest energy consumers, ahead of transport and industry. It the also represents 25% of carbon dioxide emissions at the national state, it consumes a lot of energy for the production of domestic hot water (DHW) and the heat and cold production. For this situation the house is estimated to be a major source of potential energy conservation, which is why there are so many research projects on this topic. So to reduce this consumption we thought to integrate renewable sources of energy (RES) using a control strategy of DC building. The aim of this article is to show a model of a house using RES energy, various electrical loads and the behaviour of a house's energy consumption in real time using the Simscape multi-physical description software. and we propose also a 230V DC microgrid, consisting of a 20 KWp photovoltaic panel, batteries and DC loads as also a hierarchical control strategy to maintain the capacity of the DC microgrid and the voltage of the common DC bus, is presented.
建筑是最大的能源消耗者,排在交通和工业之前。它也代表了全国25%的二氧化碳排放量,它消耗了大量的能源用于生产生活热水(DHW)和冷热生产。在这种情况下,房屋被认为是潜在节能的主要来源,这就是为什么有这么多关于这个主题的研究项目。因此,为了减少这种消耗,我们考虑使用直流建筑的控制策略来整合可再生能源(RES)。本文的目的是使用Simscape多物理描述软件实时展示一个使用可再生能源的房屋模型,各种电力负荷和房屋能源消耗的行为。我们还提出了一个由20 KWp光伏板、电池和直流负载组成的230V直流微电网,并提出了一种分层控制策略来维持直流微电网的容量和公共直流母线的电压。
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引用次数: 0
期刊
2019 International Conference of Computer Science and Renewable Energies (ICCSRE)
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