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2022 13th International Renewable Energy Congress (IREC)最新文献

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Artificial Neural Network in Photovoltaic-Battery Microgrid System for Controlling the Battery Current in French Guiana : Battery Life Improvement 法属圭亚那光伏电池微电网系统中控制电池电流的人工神经网络:提高电池寿命
Pub Date : 2022-12-13 DOI: 10.1109/IREC56325.2022.10002124
Chabakata Mahamat, Gustave Ilunga, Jessica Bechet, Sara Zermani, L. Linguet
This paper presents an artificial neural network applied to control a standalone microgrid in French Guiana. This microgrid is composed of a Photovoltaic (PV) source and a battery storage to supply a DC load. In this paper, different configurations of neural network associated with the Levenberg-Marquardt algorithm are tested to choose the best configuration to optimize the control of our system. Then, we focus on the advantage of using this type of control compared to the conventional proportional integral control (PI control). Finally, we present and discuss the results of our simulation obtained with Matlab Simulink software.
本文提出了一种应用于法属圭亚那独立微电网控制的人工神经网络。该微电网由光伏(PV)源和电池存储组成,以提供直流负载。本文测试了与Levenberg-Marquardt算法相关联的神经网络的不同配置,以选择最佳配置来优化系统的控制。然后,我们重点讨论了与传统的比例积分控制(PI控制)相比,使用这种类型的控制的优势。最后,给出并讨论了用Matlab Simulink软件进行的仿真结果。
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引用次数: 0
The Impact of AVR Reference Voltage on the Performance of Grid-Integrated Synchronous-Photovoltaic Generators AVR参考电压对并网同步光伏发电机组性能的影响
Pub Date : 2022-12-13 DOI: 10.1109/IREC56325.2022.10002036
M. Widyan, A. Harb
This paper presents a comprehensive study for the impact of the set voltage of the Automatic Voltage Regulator (AVR) of the synchronous generator on the performance of a grid-integrated synchronous-Photovoltaic (PV) generators. The study is carried out at various high PV penetration levels and wide range of set values of the controller. The response of the power system after sudden successive changes on the controller reference values is observed. The variations of the system operating points have also been outlined. In all cases, the numerical simulations are conducted using the complete nonlinear dynamical model in d-q stationary reference axes. It is concluded that the power system can withstand the variations of the AVR set voltages resulting in a wide range of system running conditions. It is worth mentioning that changing the reference voltage of the AVR does not only affect the operating conditions of the synchronous generator but also largely impact the running conditions of the PV generator.
本文全面研究了同步发电机自动调压器(AVR)的设定电压对并网同步光伏发电机组性能的影响。该研究是在各种高PV穿透水平和广泛的控制器设定值范围下进行的。观察了控制器参考值突然连续变化后电力系统的响应。还概述了系统操作点的变化。在所有情况下,采用d-q固定参考轴的完全非线性动力学模型进行数值模拟。结果表明,该系统能够承受AVR设定电压的变化所导致的大范围系统运行工况。值得一提的是,改变AVR的参考电压不仅会影响同步发电机的运行状况,还会对光伏发电机的运行状况产生很大的影响。
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引用次数: 0
Thermal behavior improvement of building materials using expanded polystyrene 用膨胀聚苯乙烯改善建筑材料的热性能
Pub Date : 2022-12-13 DOI: 10.1109/IREC56325.2022.10002016
Rabeb Ayed, Sara Baddadi, Amira Dellagi, S. Bouadila, M. Lazaar
Expanded polystyrene is gaining consensus within the scientific and technical communities as a viable and beneficial insulating material. In this context, the present work aims to evaluate numerically the efficiency of incorporating EPS in construction materials in two different methods. A heat transfer analysis using COMSOL multiphysics software was conducted to simulate the variation of the inner temperature of a hollow brick insulated by EPS, either by its incorporation in the facade coating mortar or its cavities. The results showed that coating the brick with reinforced mortar or filling its pores with EPS could improve the overall thermal performance. Therefore, the incorporation of EPS on building walls seems to be an adequate solution.
膨胀聚苯乙烯作为一种可行的、有益的绝缘材料正在科学界和技术界获得共识。在这种情况下,目前的工作旨在通过两种不同的方法来评估将EPS纳入建筑材料的数值效率。利用COMSOL多物理场软件进行了传热分析,模拟了EPS保温空心砖内部温度的变化,无论是在立面涂层砂浆中还是在其空腔中。结果表明,在砌块表面涂覆增强砂浆或在砌块孔隙中填充EPS均能提高砌块的整体热工性能。因此,在建筑墙壁上加入EPS似乎是一个适当的解决方案。
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引用次数: 0
An Intelligent Fuzzy Rule-Based Load Monitoring for Improving Energy Utilization of Energy Storage Systems 基于模糊规则的智能负荷监测提高储能系统能量利用率
Pub Date : 2022-12-13 DOI: 10.1109/IREC56325.2022.10002146
Khuthadzo Kgopana, O. Popoola
An ongoing study developed a computational approach for improving the utilization of hybrid energy system designed for low-income houses. The approach is based on the energy consumption pattern of the household, where energy sources are interchanging to meet certain loads at different time-of-use periods - energy utilization. The combination of a battery and flywheel energy storages is considered in this study, and flywheel energy storage is prioritized to supply high power peaks while the battery is expected to supply low wattage rated appliances. However, the effect of load fluctuations and transient stability can affect the operation of a proposed energy control system if certain technical operation measures are not considered. To overcome these challenges, there is a need to monitor the level of power during load inactivity to improve the precision of the load monitoring technique and apply same for enhancing energy utilization of the hybridized energy storage systems. In this paper, an intelligent Sugeno fuzzy controller is applied to monitor the level of load power at different time intervals and controls the energy flows between the battery and the flywheel energy storages. Furthermore, the flywheel improves the battery state of health by 33.9%.
一项正在进行的研究开发了一种计算方法来提高为低收入住房设计的混合能源系统的利用率。这种方法是根据家庭的能源消费模式,在不同的使用时间- -能源利用- -交换能源以满足某些负荷。本研究考虑了电池与飞轮储能的组合,并优先考虑飞轮储能供电高功率峰值,而电池供电低额定瓦数电器。然而,如果不考虑一定的技术运行措施,负荷波动和暂态稳定的影响会影响所提出的能量控制系统的运行。为了克服这些挑战,需要在负荷不活动期间监测电力水平,以提高负荷监测技术的精度,并将其应用于提高混合储能系统的能量利用率。本文采用智能Sugeno模糊控制器监测不同时间间隔的负载功率水平,控制电池与飞轮储能系统之间的能量流动。此外,飞轮提高了33.9%的电池健康状态。
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引用次数: 0
Effect of number of glass covers on performance of flat- and corrugated-plate solar air heaters 玻璃罩数量对平板和瓦楞板太阳能空气加热器性能的影响
Pub Date : 2022-12-13 DOI: 10.1109/IREC56325.2022.10001937
B. Hammad, M. Baker, M. Abdulhameed
A theoretical study of the performance of flat- and corrugated-plate solar air heaters (SAHs) is conducted. This study focuses on the effect of the number of glass covers on SAHs behavior. The isotropic diffuse model is utilized to calculate the effective transmittance-absorptance product, while the energy balance equation is employed to estimate the thermal efficiency. The hourly and monthly meteorological data for Amman, Jordan is adopted to generate the results. Increasing the number of glass covers has a positive effect represented by decreasing the overall heat loss coefficient and a negative influence characterized by decreasing the effective transmittance-absorptance product. These opposite effects result in an optimal number of glass covers that achieves the highest heater performance. Based on the model in this work and operational conditions for Amman, the optimal number for glass covers is two.
对平板和瓦楞纸板太阳能空气加热器的性能进行了理论研究。本研究的重点是玻璃罩数量对SAHs行为的影响。采用各向同性扩散模型计算有效透过-吸收积,采用能量平衡方程估算热效率。结果采用约旦安曼的时、月气象资料。增加玻璃罩的数量有降低总热损失系数的积极影响,有降低有效透过-吸收积的消极影响。这些相反的效果导致最佳数量的玻璃盖,达到最高的加热器性能。根据本文所建立的模型和安曼的运行条件,玻璃罩的最优数量为2个。
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引用次数: 0
Modeling and optimization of energy production from lignocellulosic biomass in Burkina Faso 布基纳法索木质纤维素生物质能源生产的建模和优化
Pub Date : 2022-12-13 DOI: 10.1109/IREC56325.2022.10002037
Fernand Zoma, M. Sawadogo
Burkina Faso has significant biomass (lignocellulosic) potential that can be used for energy production. Despite this availability, there are many problems in developing viable schemes to implement optimal bioenergy production in Burkina Faso given the technologies and energy needs. This study aims to develop a Mixed Integer Linear Programming (MILP) model to evaluate and optimize the main supply chain options in terms of economic criteria. The proposed model was applied to a case study in five Burkina Faso regions to produce heat, electricity, and briquettes from crop residues (cotton stalks) and agro-industrial residues (cashew nut shells and mango pits). The obtained results indicate that the optimal technologies are briquetting plants for the production of briquettes and the best biomasses are agro-industrial residues. A sensitivity analysis is therefore made considering variations in the price of biomass and products.
布基纳法索具有巨大的生物质(木质纤维素)潜力,可用于能源生产。尽管有这种可用性,但考虑到技术和能源需求,在制定可行方案以在布基纳法索实施最佳生物能源生产方面存在许多问题。本研究旨在建立一个混合整数线性规划(MILP)模型,以经济标准评估和优化主要供应链选项。所提出的模型被应用于布基纳法索五个地区的一个案例研究中,该地区利用作物残留物(棉花秸秆)和农业工业残留物(腰果壳和芒果核)生产热能、电力和压块。结果表明,生产型煤的最佳工艺是压块厂,最佳生物质是农工废渣。因此,考虑到生物质和产品价格的变化,进行了敏感性分析。
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引用次数: 0
Design, manufacturing and test of a mixed-mode solar dryer for food products 食品用混合模式太阳能干燥机的设计、制造与试验
Pub Date : 2022-12-13 DOI: 10.1109/IREC56325.2022.10001981
S. Chemkhi
This work was focused on the experimental study of a mixed-mode solar dryer. This dryer is designed and manufactured at the mechanical engineering department of ISSAT Kairouan. Mainly a solar collector, a drying box equipped with three trays for crops and covered with a transparent glass cover, a chimney, composes it and it is equipped with an electric air fan. The presented dryer is characterized by two coupled heat transfer modes; convective heat transfer and direct solar radiation to dry the food products. The solar dryer is tested in Kairouan city during June 2022 and applied to dry two food products, red pepper and banana. The experimental results are acceptable and the system present high thermal efficiency and short dying time from 4 to 7 hours. Compared to conventional convective drying in a tunnel dryer, the solar system can save a lot of energy and reduce the drying time considerably. Moreover, the final quality of the dry products is acceptable for human safe consumption.
本文对混合模式太阳能干燥机进行了实验研究。该烘干机是由ISSAT凯柔机械工程部设计制造的。主要由太阳能集热器、装有三个托盘的干燥箱、透明玻璃罩、烟囱和电风扇组成。该干燥器具有两种耦合传热模式;对流传热和太阳直接辐射干燥食品。该太阳能烘干机将于2022年6月在开滦市进行测试,并用于干燥红辣椒和香蕉两种食品。实验结果令人满意,该系统热效率高,染色时间短,仅为4 ~ 7小时。与传统的隧道式干燥机中的对流干燥相比,太阳能系统可以节省大量的能源,并大大缩短干燥时间。此外,干燥产品的最终质量是可接受的人类安全消费。
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引用次数: 0
A Case Study of Jordanian Power Grid Stability and Sustainability with and Without an External Grid Tie Line 约旦电网在有无外部并网线情况下的稳定性和可持续性案例研究
Pub Date : 2022-12-13 DOI: 10.1109/IREC56325.2022.10001973
A. Harb, Hamza Alnawafah, Obadah Alalwan
There are many studies on the stability of Jordanian grid at different voltage levels (400/132/33 kV). There has recently been an increase in studies on the power quality of the Jordanian Power Grid (JPG). In this paper, study will be done on the stability and power quality of JPG with and without an external grid tie connection. To achieve that, the actual power grid in the JPG is represented by a Digsilent Power Factory Software as a dynamic power system, and the different load demands. The results showed improvements in the power quality of the JPG with an external grid tie connection, while the JPG will loss stability without external connection.
约旦电网在不同电压水平(400/132/33 kV)下的稳定性研究较多。最近对约旦电网(JPG)电能质量的研究有所增加。本文将对JPG在有和没有外部并网情况下的稳定性和电能质量进行研究。为了实现这一目标,将JPG中的实际电网用Digsilent power Factory Software表示为一个动态的电力系统,并对不同的负载需求进行描述。结果表明,有外部并网时,JPG的电能质量得到改善,而没有外部并网时,JPG的电能质量会下降。
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引用次数: 1
Energy Management and Performances Evaluation of Proton Exchange Membrane Fuel Cell Battery Electric Vehicle 质子交换膜燃料电池电动汽车能量管理与性能评价
Pub Date : 2022-12-13 DOI: 10.1109/IREC56325.2022.10002040
Ahmed Khadhraoui, T. Selmi, A. Cherif
Hybrid electric vehicles are strategy to protect ecosystems, climate change and reduce the need for fossil fuels. Some of the energy sources used to develop these vehicles are batteries and fuel cells (FCs). However, in some scenarios, FC cannot guarantee the energy required for life in the long term. Electricity storage systems (ESSs) are suitable candidates for solving FC transient response problems. The proposed storage system consists of Ultra Batteries (UBs). The combination of FC and UB in electric vehicles is called FCBEV. The energy consumption model of a FCBEV is adopted by considering the power losses of various components, such as the fuel cell, electric motor, the state of charge (SOC) of the battery, and breaks. This paper aims to theoretically study a method to improve the efficiency of FC batteries, by implementing a reinforcement-learning energy management strategy (EMS), pursuing this scope through the optimization of the hydrogen fuel consumption per 100 km. The performance of the FCBEV proposed is verified through numerical simulations, mainly performed under MATLAB environment, over driving cycles.
混合动力电动汽车是保护生态系统、气候变化和减少对化石燃料需求的战略。用于开发这些车辆的一些能源是电池和燃料电池(fc)。然而,在某些情况下,FC不能保证长期生活所需的能量。电力存储系统(ess)是解决FC暂态响应问题的合适人选。提出的存储系统由超级电池(UBs)组成。在电动汽车中,FC和UB的结合被称为FCBEV。考虑燃料电池、电动机、电池荷电状态(SOC)、刹车等各部件的功率损耗,采用FCBEV的能耗模型。本文旨在从理论上研究一种提高FC电池效率的方法,通过实施强化学习能量管理策略(EMS),通过优化每百公里氢燃料消耗来追求这一范围。通过数值仿真验证了所提出的FCBEV的性能,主要在MATLAB环境下进行了多次行驶仿真。
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引用次数: 1
Adoption of Vienna Rectifier with Voltage-Oriented Control Technique based Electric Vehicles Charging Stations for Future Integration into a Local Network 采用维也纳整流器与电压定向控制技术的电动汽车充电站未来集成局域网
Pub Date : 2022-12-13 DOI: 10.1109/IREC56325.2022.10001951
Waled Sulieman Ali, A. Nouh, Moneer A. Faraj, F. Mohamed
Electric vehicles (EVs) are gaining popularity worldwide. However, fast charging systems are crucial for the success of the commercialization of EVs. These systems are heavily reliant on having highly efficient charging stations to reduce the charging time. An EV charger with high total harmonic distortion (THD) can affect both the charging time and battery life. In this research, the Vienna rectifier was adopted due to the low THD, high power density, and high efficiency. Employing Matlab/Simulink software with two simulation scenarios, the proposed Vienna rectifier using the voltage-oriented control technique was implemented and simulated. Charging the EV battery using a constant current controller (CC) at different values and charging the battery directly without the controller are the two scenarios. The simulation results showed that the proposed charger is capable of providing fast charging with low THD allowing the battery to be charged in a shorter charging time less than 15 minutes.
电动汽车(ev)在全球越来越受欢迎。然而,快速充电系统对于电动汽车的商业化成功至关重要。这些系统在很大程度上依赖于高效的充电站来减少充电时间。高总谐波失真(THD)会影响充电时间和电池寿命。本研究采用维也纳整流器,由于其低THD、高功率密度和高效率。利用Matlab/Simulink软件,通过两种仿真场景,对采用电压定向控制技术的维也纳整流器进行了实现和仿真。使用恒流控制器(CC)对电动汽车电池进行不同值的充电和不使用控制器直接对电池进行充电是两种情况。仿真结果表明,所设计的充电器能够提供低THD的快速充电,使电池在不到15分钟的充电时间内完成充电。
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引用次数: 0
期刊
2022 13th International Renewable Energy Congress (IREC)
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