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2021 IEEE Conference on Energy Conversion (CENCON)最新文献

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Investigation of Single-Band and Multi-Band Power System Stabilizers Towards Transient Stability Improvement in Electrical Networks 提高电网暂态稳定性的单频段和多频段电力系统稳定器研究
Pub Date : 2021-10-25 DOI: 10.1109/CENCON51869.2021.9627246
A. Alsakati, C. Vaithilingam, J. Alnasseir, A. Jagadeeshwaran
Power System Stabilizers (PSSs) are utilized to improve the stability of electrical networks and provide additional damping to reduce electromechanical oscillations. PSS is developed to cope with different oscillation modes, such as global, local, and inter-area modes. Several PSS designs have been discussed in the literature, including single input, dual-input and Multi-Band (MB) PSS. In this research, different PSSs designs (PSS1A, $P$ SS3B, and MB-PSS4B) are investigated, and a four-machine system is considered with two areas and modeled using MATLAB/Simulink. The results indicate that the performance of optimized MB-PSS4B is better than PSS1A and $P$ SS3B where the settling time of power angle is reduced. The settling time decreased to 4.24 s when the OMB-PSS4B is used. Moreover, there is a small reduction in the peak power angle with the utilization of OMB-PSS4B.
电力系统稳定器(pss)用于提高电网的稳定性,并提供额外的阻尼来减少机电振荡。PSS的发展是为了应对不同的振荡模式,如全球,局部和区域间模式。文献中讨论了几种PSS设计,包括单输入、双输入和多频段PSS。在本研究中,研究了不同的PSS1A, $P$ SS3B和MB-PSS4B设计,并考虑了一个四机系统,分为两个区域,并使用MATLAB/Simulink进行建模。结果表明,优化后的MB-PSS4B性能优于PSS1A和pss3b,减小了功率角的稳定时间。采用OMB-PSS4B时,沉淀时间缩短至4.24 s。此外,使用OMB-PSS4B后,峰值功率角有较小的减小。
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引用次数: 2
Modelling and Analysis of 18-Pulse Rectification System for DC Traction Power Substation 直流牵引变电所18脉冲整流系统建模与分析
Pub Date : 2021-10-25 DOI: 10.1109/CENCON51869.2021.9627279
A. I. M. Shukran, C. L. Toh, C. Tan
Eighteen-pulse rectifier had been proposed to replace the conventional twelve-pulse rectifier as it may further minimize the ac and dc harmonics distortions. This paper presents a simulation study of implementing an eighteen-pulse rectification system for future dc traction power substation. A phase-shifting transformer with angle displacement of 0, −20, and +20 degrees and three unit of six-pulse diode rectifier are modelled and validated via simulation. The preliminary results had confirmed that this 18-pulse rectification system managed to keep the utility grid voltage and current distortion indexes at about 2% without employing any harmonic filters. However, approximately 1 MVar reactive power must be compensated. Thus, passive harmonics filters are proposed. Three major power quality improvements are observed via simulation after implementing these filters. Firstly, the instantaneous reactive power is kept within the bands of ± 0.12 MVar. Next, an approximate unity power factor can be seen from the grid system. Lastly, the grid voltage and current waveforms distortion are complied with IEEE standard for both normal and contingency operating condition.
由于十八脉冲整流器可以进一步减少交流和直流谐波的畸变,因此提出用十八脉冲整流器代替传统的十二脉冲整流器。本文对未来直流牵引变电所实施十八脉冲整流系统进行了仿真研究。对角位移为0度、−20度和+20度的移相变压器和三个单元的六脉冲二极管整流器进行了建模和仿真验证。初步结果证实,该18脉冲整流系统在不使用任何谐波滤波器的情况下,成功地将电网电压和电流畸变指标保持在2%左右。然而,大约1 MVar的无功功率必须补偿。因此,提出了无源谐波滤波器。在实现这些滤波器后,通过仿真观察到三个主要的电能质量改善。首先,瞬时无功功率保持在±0.12 MVar范围内。其次,可以从电网系统中得到近似的单位功率因数。最后,在正常工况和应急工况下,电网电压和电流波形畸变均符合IEEE标准。
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引用次数: 0
Point Absorber with Direct-Drive Power Take-Off System for Low Wave Application 点减震器与直接驱动动力起飞系统的低波应用
Pub Date : 2021-10-25 DOI: 10.1109/CENCON51869.2021.9627273
A. Ishak, A. Hasim, S. F. S. Dardin, J. Burhanudin, T. Ibrahim
A direct-drive system with a permanent magnet linear generator has been an attractive solution for wave energy converter devices. Exploiting the reciprocating movement of wave motion has enabled the application of linear generators to wave energy converter devices. This paper presents the computational simulation of the Permanent Magnet Linear Generator design for a point absorber wave energy converter. The electromagnetic analysis was done using the Finite Element Analysis software, ANSYS. With this analysis, results on the flux distribution, air gap flux density and open-circuit results of the proposed design were gathered. A lab-scale device was constructed to validate a simple version of a single-phase linear generator design. A comparative study of both simulation and experimental results of the linear generator was carried out. Based on the results, the percentage error between simulation and experimental obtained was acceptable. To maximize power generation, an improved version of the linear generator based on an actual ocean profile was proposed.
采用永磁直线发电机的直接驱动系统已成为波能转换装置的一种有吸引力的解决方案。利用波浪运动的往复运动,使线性发电机应用于波能转换装置。本文介绍了用于点吸收波能转换器的永磁直线发电机设计的计算仿真。采用有限元分析软件ANSYS进行电磁分析。通过分析,收集了设计方案的磁通分布、气隙磁通密度和开路结果。构建了一个实验室规模的设备来验证单相线性发电机设计的简单版本。对线性发电机的仿真结果和实验结果进行了对比研究。结果表明,仿真结果与实验结果的百分比误差是可以接受的。为了最大限度地提高发电量,提出了一种基于实际海洋剖面的线性发电机的改进版本。
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引用次数: 0
A Single-Phase Multilevel Inverter with Reduced Switch Count for Solar PV Application 一种用于太阳能光伏发电的开关数减少的单相多电平逆变器
Pub Date : 2021-10-25 DOI: 10.1109/CENCON51869.2021.9627272
Ali Bughneda, Mohamed Salem, D. Ishak, Salah Alatai, M. Kamarol, Khlid Ben Hamad
The persistent energy problems facing developing nations can be addressed by investing in renewable energy sources and technologies as these RES, such as fuel cell, PV energy, wind energy, and biomass energy can provide the needed energy to overcome energy shortages in such nations. MLIs are commonly used for high power high/medium voltage applications as they are considered an advanced topology for power conversion. Studies are currently focusing on the design of “reduced switch MLI (RS MLI) topologies” to facilitate the production of high-quality output without using numerous numbers of switches. These RS MLI are currently emerging techniques for various reasons, such as cost reduction, optimal sizing, reduced volume, minimized losses, and high efficiency. This study presents the design and development of a Multilevel Inverter (MLI) structure with fewer switch count for PV application. The proposed inverter architecture comprises of an H-bridge unit that acts as the polarity generator and the level generating unit comprising independent voltage sources with switches and diodes. It combines the proposed inverter with a PV array through a DC-DC converter. The boost converter will improve the output voltage of the solar photovoltaic system to its maximum value using MPPT (P&O). The proposed inverter is designed and tested for structures of five, seven, and nine levels by using MATLAB/Simulink. Selected results are presented to verify the validation of the 5, 7, and 9 levels MLIs. As a result, the proposed system successfully managed to achieve 96 % efficiency.
发展中国家面临的持续能源问题可以通过投资可再生能源和技术来解决,因为这些可再生能源,如燃料电池、光伏能源、风能和生物质能,可以提供克服这些国家能源短缺所需的能源。mli通常用于大功率高/中压应用,因为它们被认为是功率转换的高级拓扑结构。目前的研究重点是设计“简化开关MLI (RS MLI)拓扑”,以便在不使用大量开关的情况下产生高质量的输出。由于各种原因,例如降低成本、优化尺寸、减小体积、最小化损失和高效率,这些RS MLI目前是新兴的技术。本研究提出一种具有较少开关数的多电平逆变器(MLI)结构,用于光伏应用。所提出的逆变器架构包括一个作为极性发生器的h桥单元和一个由开关和二极管组成的独立电压源的电平产生单元。它通过DC-DC转换器将所提出的逆变器与光伏阵列相结合。升压变换器将利用MPPT (P&O)技术将太阳能光伏系统的输出电压提高到最大值。利用MATLAB/Simulink对五电平、七电平和九电平结构的逆变器进行了设计和测试。给出了选定的结果来验证5、7和9级mli的有效性。结果表明,该系统的效率达到了96%。
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引用次数: 1
Optimization of InGaAsSb Thermophotovoltaic Cell for Waste Heat Harvesting Application 用于余热收集的InGaAsSb热光伏电池的优化
Pub Date : 2021-10-25 DOI: 10.1109/CENCON51869.2021.9627290
Rafiqi Rosli, H. J. Lee, M. Z. Jamaludin, M. Gamel, P. Ker
Alongside the growing energy demand, the exploration and invention in technology to achieve world sustainability goal is of particular interest. However, the limitation of low overall energy conversion efficiency in conventional fossil-fuel-fired power plants is yet to be resolved. Thermophotovoltaic (TPV) system is of great interest today, as it promotes the usage of renewable energy and improves the energy efficiency in a plant. Narrower bandgap materials such as InGaAsSb TPV cell has been reported to achieve a promising performance for waste-heat application. However, the performance of InGaAsSb TPV cell is yet to be optimized. Hence, this research aims to optimize 0.496 eV InGaAsSb to achieve better cell efficiency using Silvaco software under 10002000 K blackbody temperature, which complies with the heat harvesting application. At 1223 K blackbody temperature InGaAsSb can potentially generate electricity with 10.82% efficiency $left({{P_{out}} = 0.286{text{W/c}}{{mathrm{m}}^2}} right)$. By optimizing the doping level and emitter thickness, it is capable to produce a maximum output power of 0.31 and 0.33 W/cm2, respectively. Thus, this study shall contribute to the development of narrow bandgap TPV device for waste heat recovery system.
随着能源需求的不断增长,为实现世界可持续发展目标而进行的技术探索和发明尤其令人感兴趣。然而,传统化石燃料发电厂整体能量转换效率低的局限性还有待解决。热光伏(TPV)系统在当今备受关注,因为它促进了可再生能源的使用并提高了工厂的能源效率。较窄的带隙材料如InGaAsSb TPV电池已被报道在废热应用中取得了很好的性能。然而,InGaAsSb TPV电池的性能还有待优化。因此,本研究旨在利用Silvaco软件对0.496 eV InGaAsSb进行优化,使其在10002000 K黑体温度下获得更好的电池效率,符合集热应用。在1223 K黑体温度下,InGaAsSb可以以10.82%的效率发电$左({{P_{out}} = 0.286{text{W/c}}{{ maththrm {m}}^2}} 右)$。通过优化掺杂水平和发射极厚度,最大输出功率分别为0.31和0.33 W/cm2。因此,本研究将有助于废热回收系统窄带隙TPV装置的开发。
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引用次数: 0
Fuzzy Gain Scheduling for Cascaded PI-Control for DC Motor 直流电动机级联pi控制的模糊增益调度
Pub Date : 2021-10-25 DOI: 10.1109/CENCON51869.2021.9627292
Deany Putri Aulia, Alfiyah Shaldzabila Yustin, Amien Marzuq Hilman, Aulia Rahma Annisa, Eng Wahyu Kunto Wibowo
Electric vehicles generally use a permanent magnet DC motor (PMDC). An example of an electric vehicle using PMDC is the electric scooter. The PI Controller to control the electric scooter scheme has a cascade configuration. The common problem in implementing a PI cascade controller is that the gain does not match the increasing error value in some conditions. There is also a case where a cascaded PI control method uses fuzzy logic controller, commonly called fuzzy gain scheduling. The addition of fuzzy gain scheduling on the PI speed controller shows that the speed graph response of the PMDC is better than the speed response without fuzzy gain scheduling. This method can give a good performance.
电动汽车一般采用永磁直流电动机(PMDC)。使用PMDC的电动汽车的一个例子是电动滑板车。用于控制电动滑板车方案的PI控制器采用级联结构。实现PI级联控制器的常见问题是,在某些情况下,增益与增加的误差值不匹配。还有一种情况是级联PI控制方法使用模糊逻辑控制器,通常称为模糊增益调度。在PI速度控制器上加入模糊增益调度的结果表明,PMDC的速度图响应优于不加模糊增益调度的速度响应。这种方法可以得到很好的效果。
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引用次数: 1
Novel Method for Estimating State of Health for Lead-Acid Batteries 铅酸蓄电池健康状态评估的新方法
Pub Date : 2021-10-25 DOI: 10.1109/CENCON51869.2021.9627264
Ali Asger Khattab
New method for estimating state of health of lead-acid batteries is reported in the paper. The method is based on estimating Ampere hour capacity of the lead-acid battery. Lead-acid batteries are used by electric rickshaws prevalent in developing countries including India, Bangladesh and Indonesia. Replacing lead-acid batteries causes a huge dent in the savings of the electric rickshaws driver. For extending the life of lead-acid batteries it is necessary to know it's state of health first. The proposed method can be easily appended onto a battery charger.
本文提出了一种新的铅酸蓄电池健康状态估计方法。该方法基于对铅酸蓄电池安培小时容量的估算。在印度、孟加拉国和印度尼西亚等发展中国家,电动人力车普遍使用铅酸电池。更换铅酸电池会大大减少电动黄包车司机的储蓄。要延长铅酸蓄电池的使用寿命,首先要了解蓄电池的健康状况。所提出的方法可以很容易地附加到电池充电器上。
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引用次数: 0
Open Circuit Fault Diagnosis for Multi-Level Inverters Using An Improved Current Distortion Method 基于改进电流畸变法的多级逆变器开路故障诊断
Pub Date : 2021-10-25 DOI: 10.1109/CENCON51869.2021.9627261
Laith M. Halabi, I. Alsofyani, Kyo-Beum Lee
In power electronics field, power converters are the most common appliances that are used in enormous applications, such as renewable energy and electric motor drives. However, such appliances are opposed to fault at any time. Meanwhile, open circuit faults are the most common faults. In these regards, this paper presents a creative method to detect and identify the fault location based on the current distortion. The proposed method calculates the current distortion as well as the voltage variation besides creating an improved look-up table for Hybrid active neutral point inverters (HANPC). In addition, deep description of the proposed method and performance analysis of the operational behavior of the system are carried out. In addition, the effeteness of the proposed method is verified by simulation.
在电力电子领域,功率变换器是最常见的电器,在可再生能源和电动机驱动等领域有着广泛的应用。但是,这样的电器是反对随时发生故障的。同时,开路故障是最常见的故障。在这方面,本文提出了一种基于电流畸变的故障定位检测和识别方法。该方法不仅可以计算电流畸变,还可以计算电压变化,并为混合型有源中性点逆变器(HANPC)建立了改进的查找表。此外,对所提出的方法进行了深入的描述,并对系统的运行行为进行了性能分析。最后,通过仿真验证了该方法的有效性。
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引用次数: 2
Sizing of Photovoltaic Wind Battery system integrated with Vehicle-to-Grid using Cuckoo Search Algorithm 基于布谷鸟搜索算法的车联网光伏风电池系统选型
Pub Date : 2021-10-25 DOI: 10.1109/CENCON51869.2021.9627291
Abdulgader Alsharif, Chee Wei Tan, R. Ayop, K. Y. Lau, C. L. Toh
Hybrid systems are counted as the best alternatives for environmental and power difficulties. To optimize any system in order to attain an economic system with a lower cost, sizing is required. In addition, an Energy Management Strategy (EMS) for controlling the flowing power in the system to supply the load is required. A metaheuristic optimization algorithm called Cuckoo Search Algorithm (CSA) is complemented with EMS to control and solve optimization problems for the residential area in Tripoli-Libya. In order to increase the utilization of renewable energy sources (RESs) as Photovoltaic (PV) and Wind Turbine (WT), a microgrid system was proposed with the aforementioned RESs, with battery (BT) and, Electric Vehicle (EV) in terms of Vehicle-to-Grid (V2G). The sizing of the components is performed to attain the proposed objective that termed Renewable Energy Fraction (REV) to be increased. The area of study is fortunate with different climatology conditions to produce energy through different seasons. The result demonstrated that the objective function has been achieved due to the high potential of RES in the study area. The proposed method could provide a system with a fewer number of components. The proposed system may be helpful in reducing the dependency on the utility grid by using the RESs and improving the standard of living of human beings.
混合动力系统被认为是解决环境和电力问题的最佳选择。为了优化任何系统,以获得成本较低的经济系统,需要确定规模。此外,还需要一种能量管理策略(EMS)来控制系统中的流动功率以满足负载的需求。将布谷鸟搜索算法(Cuckoo Search algorithm, CSA)作为一种元启发式优化算法与EMS相结合,对利比亚的黎波里居民区的优化问题进行控制和求解。为了提高光伏(PV)和风力发电(WT)等可再生能源(RESs)的利用率,在车辆到电网(V2G)方面,提出了采用上述可再生能源(RESs)、电池(BT)和电动汽车(EV)的微电网系统。执行组件的尺寸以达到所提出的目标,称为可再生能源分数(REV)要增加。研究区域幸运地拥有不同的气候条件,可以在不同的季节产生能量。结果表明,由于研究区RES的高潜力,实现了目标函数。所提出的方法可以提供具有较少数量组件的系统。该系统将有助于减少对电网的依赖,提高人类的生活水平。
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引用次数: 1
Design and Integration of Valves Controller For Drone Monitored Solar Irrigation System 无人机监控太阳能灌溉系统阀门控制器的设计与集成
Pub Date : 2021-10-25 DOI: 10.1109/CENCON51869.2021.9627302
F. Alnaimi, Muhammad Luqman Syakir Rosli, Ranjani Vasu, Mohamed Najah Mahdi
A controller for solenoid valves for irrigation systems has been developed to optimize water use for Lemon Myrtle crops. This project aims to help farmers manage their irrigation systems using electronic devices to control valves and monitor the whole crop zone utilising the drone. A prototype consisting of critical components such as a microcontroller, solenoid valves, and Bluetooth module as transmitter and receiver for the drone was fabricated and tested to see the performance. The primary outcome of this idea is that the crop, lemon myrtle, will receive accurate time monitoring and an optimum water supply. Proper tracking can maintain the growth of the crops and boost the production of lemon myrtle. Furthermore, energy can be saved both for machinery and humans because this system utilized solar power to run the system instead of conventional ways that use diesel generators and drones to monitor whole crop zones.
一种用于灌溉系统的电磁阀控制器已经开发出来,以优化柠檬桃金娘作物的用水。该项目旨在帮助农民管理他们的灌溉系统,使用电子设备控制阀门,并利用无人机监控整个种植区。原型机由微控制器、电磁阀和蓝牙模块等关键部件组成,作为无人机的发射器和接收器,并进行了测试,以了解其性能。这个想法的主要结果是,作物,柠檬桃,将得到准确的时间监测和最佳的供水。适当的跟踪可以保持作物的生长,促进柠檬桃的产量。此外,由于该系统利用太阳能来运行系统,而不是使用柴油发电机和无人机来监控整个作物区域的传统方式,因此可以为机器和人类节省能源。
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引用次数: 0
期刊
2021 IEEE Conference on Energy Conversion (CENCON)
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