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2018 6th International Renewable and Sustainable Energy Conference (IRSEC)最新文献

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Numerical Investigation of the Latent Heat Storage During the Melting Driven Natural Convection Around Heat Source Embedded in a Rectangular Cavity: Application to the Passive Cooling 矩形空腔内热源周围熔融驱动自然对流潜热蓄热的数值研究:在被动冷却中的应用
Pub Date : 2018-12-01 DOI: 10.1109/IRSEC.2018.8702865
H. Faraji, M. Faraji, M. Alami
Heat transfer within a cavity of adiabatic walls and containing a heat source (electronic component), carried by a substrate (board), in one of its sides is investigated. The strategy is to use a phase change material (PCM) as a heat sink for cooling the electronic component. The choice of this type of material is justified by their high density of energy storage. A 2D mathematical model is developed using the enthalpy-porosity method. The effect of natural convection is considered during the PCM melting process. Numerical investigations are focused on determining the optimal orientation of cavity for efficient cooling and also on the effect of the type of PCM (organic or inorganic) guaranteeing a long operating time while avoiding any failure.
研究了在绝热壁腔内的热传递,该腔内含有热源(电子元件),由衬底(板)携带,在其一侧。该策略是使用相变材料(PCM)作为散热片来冷却电子元件。选择这种类型的材料是合理的,因为它们具有高密度的能量存储。利用焓-孔隙度法建立了二维数学模型。在PCM熔化过程中考虑了自然对流的影响。数值研究的重点是确定有效冷却的最佳腔体方向,以及PCM类型(有机或无机)的影响,保证长时间运行,同时避免任何故障。
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引用次数: 0
Smart Buildings For Smart Grids: A Real-world Testbed 智能电网的智能建筑:一个真实世界的测试平台
Pub Date : 2018-12-01 DOI: 10.1109/IRSEC.2018.8703005
Safae Bourhnane, M. Abid, R. Lghoul, K. Zine-dine, N. Elkamoun, M. Khaidar, M. Bakhouya, D. Benhaddou
Smart Grids (SG) are emerging as a very promising technology meant to cope with the stringent worldwide demand on energy and on relevant ecologic measures. At the heart of the Smart Grids lie Smart Buildings (SB). SB are the building blocks of SG. Either residential or industrial, SBs are consuming most of the produced electrical energy. However, and in the context of SG, SBs are meant to produce energy as well and contribute to stabilizing the Demand/Response (DR) variance whereby produced energy is injected back into the SG. This occurs mainly in case of energy shortage in the main SG or in case of excess in energy production. To leverage “smartness” in buildings, continuous data monitoring (e.g., energy production/consumption levels) using wireless sensors, and real-time dissemination/processing of this data, is essential. To further boost buildings’ smartness, deploying context-awareness, whereby electrical appliances can be switched On/Off depending on context (e.g., presence and ambient temperature), would bring considerable added-value. In this paper, a blueprint for deploying a real-world SB testbed is presented.
智能电网(SG)是一项非常有前途的技术,旨在应对全球对能源和相关生态措施的严格需求。智能电网的核心是智能建筑(SB)。SB是SG的基石。无论是住宅还是工业,SBs都消耗了大部分产生的电能。然而,在SG的背景下,SBs也意味着产生能量,并有助于稳定需求/响应(DR)方差,由此产生的能量被注入SG。这种情况主要发生在主要SG能源短缺或能源生产过剩的情况下。为了利用建筑中的“智能”,使用无线传感器进行连续数据监控(例如,能源生产/消耗水平)以及实时传播/处理这些数据至关重要。为了进一步提升建筑物的智能,部署环境感知,即根据环境(例如,存在和环境温度)打开/关闭电器,将带来可观的附加值。在本文中,给出了一个部署真实的SB测试平台的蓝图。
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引用次数: 2
Innovative Cleaning Technique for PV Modules on Helioslite Biaxial Solar Trackers Helioslite双轴太阳能跟踪器上光伏组件的创新清洁技术
Pub Date : 2018-12-01 DOI: 10.1109/IRSEC.2018.8702864
Dounia Dahlioui, Salima El Ayane, Soukaina Medaghri Alaoui, A. Barhdadi, Gauthier Dambrine, Etienne Menard, Jay Boardman
Certainly the tracking systems ensure higher performance and reliability compared with fixed systems, however, the soiling affects negatively the productivity of the PV modules. There is, therefore, a paramount importance to propose a cleaning technique integrated into the biaxial tracker characterized by Tilt and Roll kinetic. In this paper, an innovative cleaning was developed for the biaxial tracker of HeliosLite which has recently installed in our RDI Solar Energy Platform at PSES in Rabat. Based on a critical analysis of several existent cleaning solutions of PV modules as well as the structure of the tracker, a functional analysis has been done of the problematic discussed. This technique, based on the use of telescopic arm connected to rotating brush, has successfully accomplished the important criteria aimed by this work namely: autonomy, stability, low cost and efficiency.
当然,与固定系统相比,跟踪系统可以确保更高的性能和可靠性,但是,污染会对光伏组件的生产力产生负面影响。因此,提出一种集成到以倾斜和滚动动力学为特征的双轴跟踪器中的清洁技术是至关重要的。在本文中,为HeliosLite的双轴跟踪器开发了一种创新的清洁方法,该跟踪器最近安装在拉巴特pse的RDI太阳能平台上。在对现有的几种光伏组件清洗方案及跟踪器结构进行分析的基础上,对所讨论的问题进行了功能分析。该技术通过将伸缩臂连接到旋转电刷上,成功地实现了本工作的重要目标:自主、稳定、低成本和高效率。
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引用次数: 2
Advance Control of a Isofotón-75W Photovoltaic Module Under Matlab-Simulink Matlab-Simulink下Isofotón-75W光伏组件的超前控制
Pub Date : 2018-12-01 DOI: 10.1109/IRSEC.2018.8703003
T. Ghaitaoui, Laribi Slimane, R. Maouedj, T. Touahri
We study in this article the best way to transfer all the useful power of photovoltaic systems (Isofoton _75W). Knowing that on the current-voltage characteristic of the generator (which depends on the conditions of illumination, temperature, aging), there is an operating point where the power output is maximum, the optimization is to focus on this point in continuously by acting automatically on the load seen by the generator. This load adaptation is carried out using a static converter whose losses must be as low as possible and which can; moreover, provide a function for formatting an output quantity (continuous-continuous conversion). With voltage modification). We chose to use MPPT maximum power point search technology, based on the "Perturb and Observe (P & O)" algorithm, controlled by a Pulse Width Modulation (PWM) signal. The aim of this work is the study of a DC-DC converter under Matlab / Simulink, used in photovoltaic systems (Isofoton_75W), and we are more specifically interested in the BOOST converter.
本文研究了光伏系统(Isofoton _75W)所有有用功率的最佳传输方式。知道在发电机的电流-电压特性(取决于光照、温度、老化等条件)上,存在一个输出功率最大的工作点,优化就是通过自动作用于发电机所看到的负载,持续地关注这一点。这种负载适应是使用静态变换器进行的,其损耗必须尽可能低,并且可以;此外,还提供了格式化输出数量的函数(连续-连续转换)。带电压修改)。我们选择使用MPPT最大功率点搜索技术,基于“扰动和观察(P & O)”算法,由脉冲宽度调制(PWM)信号控制。这项工作的目的是在Matlab / Simulink下研究一个用于光伏系统(isooton_75w)的DC-DC转换器,我们对BOOST转换器更感兴趣。
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引用次数: 0
Impact of Anthropogenic Aerosols on Solar Beam Radiation Serving CSP Fields (Heliostat) in Morocco 摩洛哥人为气溶胶对为CSP场(定日镜)服务的太阳光束辐射的影响
Pub Date : 2018-12-01 DOI: 10.1109/IRSEC.2018.8702982
A. Beyoud, A. Bouhaouss, N. Hassanain
A number of conferences around the world have called to make serious efforts for preserving the environment in order to reduce the aerosols with urban and industrial origin. It is worth pointing out that maximization of the reduction of aerosols in atmosphere is feasible. This allows a gain, in terms of thermal energy in solar power plants. Consequently, the assessment of heat gained by reducing anthropogenic aerosol were achieved to (-5%, -10% and -15%), resulting for each 5% reduction of anthropogenic aerosol make 1% of heat gained against the actual aerosol esteemed as 2.2 of aerosol optical depth (AOD) at 550nm conforming respectively (22.3, 44.7 and 67.4) MW in the solar of heliostat field at Ouarzazate of 1.3 km of the extreme heliostat with 144 m2 of surface for each one. The average of attenuation atmospheric between heliostats and receiver tower is found respectively (9.4%, 8.9% and 8.5%) against 9.9% in the real situation.
世界各地的一些会议呼吁认真努力保护环境,以减少城市和工业产生的气溶胶。值得指出的是,最大限度地减少大气中气溶胶是可行的。就太阳能发电厂的热能而言,这是一种增益。因此,减少人为气溶胶获得的热量评估达到(-5%,-10%和-15%),结果每减少5%的人为气溶胶,在550nm处的气溶胶光学深度(AOD)为2.2时,实际气溶胶获得的热量的1%分别符合(22.3,44.7和67.4)MW在Ouarzazate的极端定日镜场1.3 km,每个定日镜的表面为144 m2。定日镜与接收塔之间大气衰减的平均值分别为9.4%、8.9%和8.5%,而实际衰减值为9.9%。
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引用次数: 3
Robust Control of Three Phase Grid Connected PV System Based on ADRC and Fuzzy 基于自抗扰和模糊的三相并网光伏系统鲁棒控制
Pub Date : 2018-12-01 DOI: 10.1109/IRSEC.2018.8702950
Imad Aboudrar, S. E. Hani, Hamza Mediouni, Ahmed Aghmad, Mohamed Saleck Heyine
This paper presents the modeling and control of a three-phase grid connected PV system. A new robust control has been proposed and utilized to connect the PV system with the utility grid. For the extraction of maximum power from the PV system, the Fuzzy Logic control is used due to its robustness and fast tracking response. And for the grid side control, a new robust control strategy based on the Active Disturbance Rejection Controller (ADRC) have been proposed, where the objective is to regulate the DC bus voltage as well as to control the injection of active and reactive powers into the grid.In order to evaluate the performance of the proposed control, a series of simulations have been made under the MATLAB/SIMULINK environment.
本文介绍了三相并网光伏系统的建模与控制。提出了一种新的鲁棒控制方法,并将其应用于光伏系统与电网的连接。对于光伏发电系统的最大功率提取,模糊逻辑控制具有鲁棒性和快速跟踪响应的特点。在电网侧控制方面,提出了一种基于自抗扰控制器(ADRC)的鲁棒控制策略,其目标是调节直流母线电压以及控制向电网注入的有功和无功功率。为了评估所提出的控制的性能,在MATLAB/SIMULINK环境下进行了一系列的仿真。
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引用次数: 3
Numerical Investigation of Temperature and Current Density Distribution on (PEM) Fuel Cell Performance 温度和电流密度分布对PEM燃料电池性能影响的数值研究
Pub Date : 2018-12-01 DOI: 10.1109/IRSEC.2018.8702920
Y. Amadane, H. Mounir, A. Marjani, Ettouhami Mohamed Karim
PEM fuel cell model is developed in the ANSYS code. The proposed model can be used for studying the physical parameters effect on PEMFC performance. The main purpose of this study is to use a model for simulating the temperature distribution, (I-V) curve, as well as the current density distribution in the PEM fuel cell. The results showed that the performance of proton exchange membrane fuel cell (PEMFC) is improving with increasing temperature. These findings can be used to gain a better understanding of the functioning of the PEMFC system.
在ANSYS软件中建立了PEM燃料电池的模型。该模型可用于研究物理参数对PEMFC性能的影响。本研究的主要目的是利用一个模型来模拟PEM燃料电池的温度分布、(I-V)曲线以及电流密度分布。结果表明,质子交换膜燃料电池(PEMFC)的性能随着温度的升高而提高。这些发现可以用来更好地理解PEMFC系统的功能。
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引用次数: 4
Channeling of Static Electricity Within Wind Turbines for Transmission into the Power Grid 风力涡轮机内的静电输送到电网的通道
Pub Date : 2018-12-01 DOI: 10.1109/IRSEC.2018.8702878
M. S. Davis, M. Madani
Wind turbines employed today are fabricated from a variety of materials. Many of these materials act as insulators, effectively causing electrons to accumulate. As wind turbines operate, their blades sweep through the air causing friction to occur between the air and blade material. As a substance with the highest positive charge tendency, dry air as such typically found at most land-based wind farms pass their electrons onto the wind turbine blades by means of contact electrification, causing electrostatic accumulation. Unless properly discharged, this static electricity can be harmful to the sensitive electronics found within wind turbines. To further increase the power output of wind turbines in addition to promoting safe equipment operating conditions, this static electricity can be channeled into super capacitors for accumulation and storage. Once sufficient charge is obtained within the super capacitor, this static electricity can then be allocated to the power grid to further improve wind turbine power output. The scope of this research is to analyze the capability of channeling static electricity from wind turbine structural components into a super conductor for transmission into the power grid. This research is intended to (1) assess the means for successfully channeling electrostatic charge within wind turbines, (2) investigate the effect of electrostatic accumulation and discharge within super conductors located inside a wind turbine, and (3) assess the economic impact and feasibility of accumulating and storing static electricity within wind turbines for transmission into the power grid.
目前使用的风力涡轮机由多种材料制成。这些材料中的许多起绝缘体的作用,有效地引起电子的积累。当风力涡轮机工作时,它们的叶片在空气中扫过,导致空气和叶片材料之间发生摩擦。干燥空气作为一种具有最高正电荷倾向的物质,通常在大多数陆基风电场中发现,干燥空气通过接触带电的方式将其电子传递到风力涡轮机叶片上,从而引起静电积累。除非适当地释放,这种静电可能对风力涡轮机内的敏感电子设备有害。为了进一步提高风力涡轮机的功率输出,除了促进设备的安全运行条件,这些静电可以引导到超级电容器中进行积累和储存。一旦在超级电容器内获得足够的电荷,这些静电就可以分配给电网,以进一步提高风力涡轮机的功率输出。本研究的范围是分析将风力涡轮机结构部件产生的静电导入超导体并传输到电网的能力。本研究旨在(1)评估风力涡轮机内成功引导静电电荷的方法,(2)调查风力涡轮机内超导体内静电积累和放电的影响,以及(3)评估风力涡轮机内积累和储存静电并传输到电网的经济影响和可行性。
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引用次数: 0
Cobalt Hydroxide/Heteroatom Doped Graphene Composite as Electrocalyst for Oxygen Reduction Reaction 氢氧化钴/杂原子掺杂石墨烯复合材料作为氧还原反应的电催化剂
Pub Date : 2018-12-01 DOI: 10.1109/IRSEC.2018.8702979
Omar Benabdallah, Z. Edfouf, Siham Idrissi, Abdelfettah Lallaoui, Qiliang Wei, Xiaohua Yang, Shuhui Sun, F. C. E. Moursli
The composite Cobalt hydroxide/ternary nitrogen, phosphorus and sulfur doped graphene (Co(OH)2/NSPGr) as catalyst for oxygen reduction reaction (ORR), was synthesized by hydrothermal method. The catalytic activity for ORR of catalyst samples were studied by rotating disk electrode (RDE) and rotating ring-disk electrode (RRDE) in alkaline medium. Compared to Co(OH)2 which shows a poor catalytic activity, Co(OH)2/NSPGr composite exhibits better catalytic performances, including more positive onset potential and higher limiting current density. Moreover, RRDE results indicate that the composite undergoes a 4-electron electrochemical process as well as a low production of hydrogen peroxide % H2O2. The enhanced performances of Co(OH)2/NSPGr composite could be attributed to the effect of heteroatom doping of graphene and also the strong chemical coupling between Co(OH)2 and NSPGr.
采用水热法合成了氢氧化钴/氮、磷、硫三元掺杂石墨烯(Co(OH)2/NSPGr)作为氧还原反应催化剂的复合材料。采用旋转圆盘电极(RDE)和旋转环盘电极(RRDE)研究了催化剂样品在碱性介质中的ORR催化活性。与催化活性较差的Co(OH)2相比,Co(OH)2/NSPGr复合材料具有更好的催化性能,包括更高的正起始电位和更高的极限电流密度。此外,RRDE结果表明,复合材料经历了一个4电子电化学过程,并且过氧化氢% H2O2的产量很低。Co(OH)2/NSPGr复合材料性能的增强可归因于石墨烯的杂原子掺杂以及Co(OH)2与NSPGr之间的强化学偶联作用。
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引用次数: 0
Impact of the Parabolic Solar Concentrator’s Rim Angle on the Quantity of Reflected Rays and Concentrated Flux on the Receiver 抛物面聚光器边缘角对反射光量和聚光通量的影响
Pub Date : 2018-12-01 DOI: 10.1109/IRSEC.2018.8703031
R. Idlimam, A. Bah, M. Asbik, M. Malha, H. Kazdaba
The purpose of this study is to define the effect of the Solar Parabolic Concentrator’s rim angle on the quantity of the reflected rays and the concentrated flux of the receiver. Six rim angles $15^{circ}, 25^{circ}, 45^{circ}, 60^{circ}, 75^{circ}$ and 90° have been studied and simulated using Comsol multiphysics which is a numerical simulation software based on the finite element method. A simulation was carried out under genuine states of ambient temperature and direct normal radiation in Rabat. The results show that the best rim angle is $45^{circ}. For$ this optimal value of the rim angle, the obtained concentration ratio is of the order of 71, the average received flux is about 61.13 $kW/m^{2}$ and the maximum temperature at the surface of the receiver is 676° C.
本研究的目的是确定太阳抛物面聚光器的边缘角对反射光线的数量和接收器的集中通量的影响。利用基于有限元法的数值模拟软件Comsol multiphysics,分别对15^{circ}、25^{circ}、45^{circ}、60^{circ}、75^{circ}$和90°六个边缘角进行了研究和模拟。在拉巴特市真实环境温度和正常直接辐射状态下进行了模拟。结果表明,最佳边缘角为$45^{circ}。在此最优边缘角值下,得到的浓缩比约为71,平均接收通量约为61.13 $kW/m^{2}$,接收器表面的最高温度为676℃。
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引用次数: 1
期刊
2018 6th International Renewable and Sustainable Energy Conference (IRSEC)
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