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2021 12th International Renewable Energy Congress (IREC)最新文献

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Evolution of Electrical Performance in First Generation of SiC MOSFET for Low Voltage Applications after Short-Circuit Aging Tests 短路老化试验后第一代SiC MOSFET在低压应用中的电性能演变
Pub Date : 2021-10-26 DOI: 10.1109/IREC52758.2021.9624831
Chawki Douzi, M. Kadi, J. Ben Hadj Slama
Studying the reliability and robustness of some components, in particular wide band gap (WBG) devices, under severe conditions such as short-circuits, is an important issue. Among this WBG is the SiC, which is presently one of the dominant power switching devices in renewable energy converters such as photovoltaic and automotive power electronic converters. This paper presents aging tests of SiC MOSFET from CREE subjected to repetitive short-circuit operations. The experimental tests are detailed. The evolution of the electrical static characterizations (drain current Id and gate-source voltage Vgs waves), before and after aging, is presented. Furthermore, the repetitive short-circuit aging effect on electrical parameters (threshold voltage Vth, on-state resistance Rdson and Igss gate and Idss drain leakage currents) is carried out.
研究某些器件,特别是宽带隙器件在短路等恶劣条件下的可靠性和鲁棒性是一个重要问题。其中,碳化硅是目前在光伏、汽车电力电子等可再生能源变换器中占主导地位的功率开关器件之一。本文介绍了CREE SiC MOSFET在重复短路操作下的老化试验。详细介绍了实验结果。给出了老化前后的静电特性(漏极电流Id和栅源电压Vgs波)的演变。此外,还研究了重复短路老化对电学参数(阈值电压Vth、导通电阻Rdson和Igss栅极以及Idss漏极泄漏电流)的影响。
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引用次数: 0
A New Application of Mayfly Optimization Algorithm for Parameter Estimation of Single-Phase Transformer Mayfly优化算法在单相变压器参数估计中的新应用
Pub Date : 2021-10-26 DOI: 10.1109/IREC52758.2021.9624854
Mohamed H. Hassan, Heba Youssef, S. Kamel, F. Jurado
In this paper, the Mayfly Optimization algorithm (MA) is proposed to identify the parameters of the single-phase power transformer which is considered as one of the electric engineering optimization problems. This study aims to estimate equivalent circuit parameters of a single-phase transformer using current and voltage values at any known load. The difference between actual and estimated parameter values has been minimized using the MA technique and obtaining the best values for these parameters. The optimum value of the errors between the measured and the estimated values of the primary current, secondary current, and secondary voltage at full load using the proposed MA algorithm was compared with three other algorithms (Particle Swarm Optimization (PSO), Differential Evolution (DE) and Shuffled frog-leaping algorithm (SFLA)). The obtained results confirm that the proposed technique can be used for single-phase transformer parameters identification.
本文提出了基于Mayfly优化算法的单相电力变压器参数辨识问题,该问题被认为是电力工程优化问题之一。本研究的目的是估计等效电路参数的单相变压器使用电流和电压值在任何已知负载。利用MA技术最小化了实际参数值与估计参数值之间的差异,并获得了这些参数的最佳值。将该算法与粒子群算法(PSO)、差分进化算法(DE)和shuffle青蛙跳跃算法(SFLA)进行比较,得到满载时一次电流、二次电流和二次电压的测量值与估计值之间误差的最优值。结果表明,该方法可用于单相变压器参数识别。
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引用次数: 2
Gain-scheduled frequency control in a microgrid 微电网增益调度频率控制
Pub Date : 2021-10-26 DOI: 10.1109/IREC52758.2021.9624885
M. Nachidi, F. Tadeo
This paper proposes a robust H∞ static output-feedback (SOF) controller design method for microgrid using Linear Parameter-Varying (LPV) approach. The proposed controller is designed to not only ensure a good frequency response with disturbance rejection, but also to provide the robustness in despite changes of the inertia of the grid. Two scenarios are studied in simulation to show the good steady-state and dynamic behaviours of the closed-loop system.
提出了一种基于线性参数变化(LPV)方法的微电网鲁棒H∞静态输出反馈(SOF)控制器设计方法。所设计的控制器不仅保证了良好的频率响应和抗干扰性,而且在网格惯性变化的情况下也提供了鲁棒性。仿真研究了两种情况,证明了闭环系统具有良好的稳态和动态特性。
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引用次数: 0
Performance Analysis of Small Signal of Benban Solar Park Integrated with Battery ESS Optimized by EMS during Uncertainty Condition 不确定条件下EMS优化电池ESS集成的本班太阳能园区小信号性能分析
Pub Date : 2021-10-26 DOI: 10.1109/IREC52758.2021.9624807
Azza Mustafaa, A. Rashad, S. Kamel, L. Nasrat, F. Jurado
The coupling of electrical networks with renewable energy plants has led to the emergence of many requirements and issues. These days the phenomenon of using energy storage systems (ESS) with renewable energy plants, especially solar one becomes the focus of attention of some research. In this paper, energy management system method (EMS) is applied to a small signal of solar photovoltaic system located at Benban associated with Battery energy storage system (BESS). The main aim of the paper is to achieve the flexibility and balance between the demanded power and cost during uncertainty condition. Actual data of Benban solar park and MATLAB Simulink package are used to create a Matlab model of a small signal of Benban Solar Park.
电网与可再生能源工厂的耦合导致了许多要求和问题的出现。近年来,将储能系统(ESS)与可再生能源电站,特别是太阳能电站结合使用的现象已成为一些研究的焦点。本文将能量管理系统方法(EMS)应用于与电池储能系统(BESS)相关联的Benban小信号太阳能光伏系统。本文的主要目的是在不确定条件下实现电力需求和成本之间的灵活性和平衡。利用本班太阳能园区的实际数据和MATLAB Simulink软件包,建立了本班太阳能园区小信号的MATLAB模型。
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引用次数: 1
Thermodynamic analysis and assessment of a Once Through multistage desalination (MSF) 一次过多级海水淡化(MSF)的热力学分析与评价
Pub Date : 2021-10-26 DOI: 10.1109/IREC52758.2021.9624842
Houda Eletri, A. Snoussi, A. Fellah
We provide a modeling, and a contribution to a thermodynamic optimization of a Once Through multistage thermal desalination (MSF) system. A parametric investigation was carried out, which consist of varying certain characteristic parameters of the installation. Obtained results shows that, the increase in the number of stages contributes to the reduction of the specific surface area, in particular up to a number of 15 stages: When the number of stages goes from 10 to 15 the specific surface area decreases by 90m²/(kg/s). Beyond 15 the variation becomes slower. While concerning the variation of the head temperature T0, it is noted that when it increases from 106 ° C to 110 ° C, the specific surface elevates by 8 m²/(kg/s)and the performance ratio increases by 5%. For the effect of seawater, temperature goes from 25 to 30 ° C.
我们提供了一个模型,并对一次通过多级热脱盐(MSF)系统的热力学优化做出了贡献。进行了参数调查,其中包括改变安装的某些特征参数。所得结果表明,随着段数的增加,比表面积减小,特别是当段数达到15时,比表面积从10级增加到15级,比表面积减小90m²/(kg/s)。超过15,变化就变慢了。对于水头温度T0的变化,从106℃增加到110℃时,比表面积增加8 m²/(kg/s),性能比提高5%。由于海水的影响,温度从25°C到30°C不等。
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引用次数: 0
Effect of Diesel-Biodiesel blends on mixture properties 柴油-生物柴油混合物对混合物性能的影响
Pub Date : 2021-10-26 DOI: 10.1109/IREC52758.2021.9624856
H. Kerras, N. Outili, Ah. Meniai, K. Loubar
Renewable energies are essential for the reduction of greenhouse gas emissions and sustainable development goals achievement. Biodiesel from waste vegetable oils is a promising alternative to fossil diesel. Several researchers show that increasing biodiesel percentages from 0% to 100% can affect the mixture properties such as density, viscosity, pH, humidity, cetane number, low heating value, etc and it can also reduce HC, CO, and PM emissions while increasing NOx emissions. The main objective of this work is to study the effect of adding percentages of soybean biodiesel in fossil diesel (B5 to B80) on some properties such as density, viscosity and cetane number. The results showed that the studied blends met the standards for considered properties, except for the viscosity at high percentage of biodiesel, also the results showed that mixing biodiesel up to an optimal value of around 45% with Algerian diesel is recommended to ensure the respect of norms for density, viscosity and cetane number.
可再生能源对于减少温室气体排放和实现可持续发展目标至关重要。从废弃植物油中提取生物柴油是一种很有前途的化石柴油替代品。一些研究表明,将生物柴油的比例从0%提高到100%,可以影响混合物的密度、粘度、pH值、湿度、十六烷值、低热值等特性,还可以减少HC、CO和PM的排放,同时增加NOx的排放。本研究的主要目的是研究大豆生物柴油在化石柴油(B5 ~ B80)中的添加比例对密度、粘度和十六烷值等性能的影响。结果表明,所研究的混合物符合所考虑的性能标准,除了高百分比生物柴油的粘度外,结果还表明,建议将生物柴油与阿尔及利亚柴油混合至45%左右的最佳值,以确保密度,粘度和十六烷值符合规范。
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引用次数: 1
Implementation of an energy management strategy for a low power hybrid system: Application on cell phone charging 低功耗混合动力系统能量管理策略的实现:在手机充电中的应用
Pub Date : 2021-10-26 DOI: 10.1109/IREC52758.2021.9624786
N. Lazaar, O. Dia, A. Sharma
Recently, energy harvesting from human motion and its environment has gained considerable interest given its potential to provide safe and clean energy to portable electronic devices. Nevertheless, the energy produced is insufficient to meet the load needs. In this paper, a hybrid photovoltaic/ thermoelectric/piezoelectric system is used along with a Li-ion battery to power a smart cell phone. The model is developed in Matlab/Simulink and includes a preliminary proposal for an energy management system to balance energy production with consumption. The model performance is validated numerically with a standard deviation of 0,14V of the DC Link voltage.
最近,由于能够为便携式电子设备提供安全和清洁的能源,从人体运动及其环境中收集能量已经引起了相当大的兴趣。然而,产生的能量不足以满足负荷的需要。在这篇论文中,一种混合光伏/热电/压电系统与锂离子电池一起为智能手机供电。该模型是在Matlab/Simulink中开发的,其中包括一个能源管理系统的初步建议,以平衡能源生产和消耗。该模型的性能在DC Link电压的标准偏差为0.14 v的情况下进行了数值验证。
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引用次数: 0
Comparative analysis of thyristor-based and transistor-based rectifiers for PEM water electrolysis 用于PEM水电解的晶闸管整流器与晶体管整流器的比较分析
Pub Date : 2021-10-26 DOI: 10.1109/IREC52758.2021.9624773
M. Keddar, Z. Zhang, C. Periasamy, M. Doumbia
Hydrogen is an important industrial gas for clean fuel, power-to-gas energy storage, and chemical production. In large-scale electrolysis systems with a high direct current supply, power rectifiers are important components to connect to the main power grid. Currently, Thyristor-based topology is most commonly used for large-scale industrial proton exchange membrane (PEM) water electrolysis applications due to its maturity. However, this topology cannot always satisfy the main grid requirements and instead lead to higher specific energy consumption per kilogram of hydrogen produced. Instead, the transistor-based topology is more promising to reduce the total system cost. In this research, 6-pulse thyristor-based and transistor-based topologies are compared and investigated to improve the power quality for a 20 MW PEM water electrolyzer in Air Liquide's Bécancour plant. We first built a Matlab/Simulink model to simulate the water electrolysis system. Then, we compared the power quality parameters with the plant measurement.
氢是清洁燃料、电转气储能和化工生产的重要工业气体。在需要大直流供电的大型电解系统中,电源整流器是连接主电网的重要部件。目前,基于晶闸管的拓扑结构由于其成熟,最常用于大规模工业质子交换膜(PEM)的水电解应用。然而,这种拓扑结构不能总是满足主要电网的要求,反而会导致每千克氢生产的比能耗更高。相反,基于晶体管的拓扑结构更有希望降低系统的总成本。在本研究中,比较和研究了基于6脉冲晶闸管和基于晶体管的拓扑结构,以改善液化空气b cancour工厂20 MW PEM水电解槽的电能质量。首先建立了Matlab/Simulink模型对水电解系统进行仿真。然后,我们将电能质量参数与工厂测量值进行了比较。
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引用次数: 3
Impact of COVID-19 on Electric Energy Consumption 新冠肺炎疫情对电能消耗的影响
Pub Date : 2021-10-26 DOI: 10.1109/IREC52758.2021.9624928
Nabeel A. Tawalbeh, Suad S. Al Mattar, Wejdan Abu Elhaija, M. Khasawneh
COVID-19 has been a source of great disruption to governments and people ali over the world. Health care systems have been overwhelmed, already destabilized financial markets further jeopardized, with oil and energy markets plunging into crises and economic activities coming to severe halts. To keep people connected while working from home and upholding life-saving facilities in hospitals and around industrial regimes, reliable affordable electricity is imminent. As an immediate consequence of the pandemic, much pressure has befallen countries with low-energy reserves, where the energy sectors involved had already been staggering and facing major challenges ahead of COVID-19. Jordan’s, being of these impacted countries, peak demand on electricity decreased by 17.5% by early April 2020 compared with the mean 2019 levels. Based on the ARMA and ARIMA models obtained, the impact on 2020 electricity demand in Jordan depends on the durations and levels of the confinement/s, with a low estimate of 2.76% if pre pandemic conditions return by mid-September (2020), and a high estimate of 7% if some restrictions remain in effect worldwide until the end of 2020. This article reports the short-term impact of the COVID-19 pandemic on the energy sector in Jordan, with Jordan being a typical example of many such countries worldwide. This will help leverage contingencies and good planning that would help the energy sectors worldwide remain within some sustainable regime/s.
新冠肺炎疫情给世界各国政府和人民带来了巨大干扰。卫生保健系统不堪重负,本已不稳定的金融市场进一步受到威胁,石油和能源市场陷入危机,经济活动严重停顿。为了在人们在家工作的同时保持网络连接,维护医院和工业设施的救生设施,可靠、负担得起的电力迫在眉睫。大流行的直接后果是,能源储量低的国家承受了巨大压力,这些国家的能源部门在2019冠状病毒病之前已经处于惊人状态,面临重大挑战。约旦是这些受影响的国家之一,到2020年4月初,电力峰值需求与2019年的平均水平相比下降了17.5%。根据获得的ARMA和ARIMA模型,对约旦2020年电力需求的影响取决于限制的持续时间和水平,如果到2020年9月中旬大流行前的条件恢复,则低估计为2.76%,如果到2020年底全球范围内的一些限制仍然有效,则高估计为7%。本文报道了2019冠状病毒病大流行对约旦能源部门的短期影响,约旦是世界上许多此类国家的典型例子。这将有助于利用突发事件和良好的规划,帮助全球能源部门保持在某种可持续的体制内。
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引用次数: 0
Optimization of Flux Switching Permanent Magnet Motor to enhance the traction of an Electric Vehicle 磁通开关永磁电机优化提高电动汽车的牵引力
Pub Date : 2021-10-26 DOI: 10.1109/IREC52758.2021.9624760
Kehinde R. Kamil, Jemilat I. Kamil, Qingsong Wang
There is a rising outcry of environmental pollution and the resulting effect of global warming caused by the use of fossil energies, there is a need for the introduction of highly efficient electric machines for propulsion and traction of the moving part with the increasing global acceptance of electric vehicles and advance machineries. This paper proposed a way to optimize the stator flux switching permanent magnet motor (FSPM) by the introduction of two dual slot additional rotors that are staged 180 degrees apart. The structure, electromagnetic properties and the phase direction of rotation of the proposed permanent magnet machine were investigated at different phase angle. Background study on the mode structure of establishing the proposed topology of one stator and two rotors instead of the conventional one rotor for the motor operation was done. With attention paid to the losses on the stator and rotor, finite element method was used to establish the structure of the proposed permanent magnet machine. The load simulation of the electromagnetic properties was investigated using FEMM 4.2 and Ansys Maxwell to show the advantages of the proposed machine topology to allowing higher electric loading to increase power density in electric vehicles.
由于化石能源的使用造成了环境污染和全球变暖的后果,人们越来越强烈地抗议。随着全球对电动汽车和先进机械的接受程度越来越高,有必要引进高效的电动机器来推进和牵引运动部件。提出了一种通过引入两个间隔180度的双槽附加转子来优化定子磁通开关永磁电机的方法。研究了该永磁电机在不同相角下的结构、电磁特性和旋转方向。本文对提出的一定子两转子拓扑结构取代传统的一转子拓扑结构的模态结构进行了背景研究。在考虑定子和转子损耗的基础上,采用有限元方法建立了永磁电机的结构。利用FEMM 4.2和Ansys Maxwell进行了电磁特性的负载仿真,以证明所提出的机器拓扑结构在允许更高的电负载以提高电动汽车功率密度方面的优势。
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引用次数: 0
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2021 12th International Renewable Energy Congress (IREC)
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