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Analysis on three phase cascaded H-bridge multilevel inverter based on sinusoidal and third harmonic injected pulse width modulation via level shifted and phase shifted modulation technique 基于正弦和三次谐波注入脉宽调制的移电平和移相调制技术的三相级联h桥多电平逆变器分析
Q2 Energy Pub Date : 2021-03-01 DOI: 10.11591/IJPEDS.V12.I1.PP160-169
A. Subki, Z. Manap, Mohd Zaidi Mohd Tumari, A. Z. Jidin, Shahrizal Saat, A. F. Z. Abidin, M. Saealal
This work proposes a comparative analysis of sinusoidal and third harmonic injected reference signal modulation accompany with level-shifted PWM technique named as phase disposition (LSPD), phase opposition disposition (LSPOD), and alternate phase opposition disposition (LSAPOD) and phase-shifted PWM technique. Switching pulses from both reference signal and PWM technique have been fed into three phase eleven level cascaded H-bridge multilevel inverter (CHBMLI) fed on a resistive-inductive load with the modulation depth (MD) set to varied from 80% to 100%. For voltage source inverter, total harmonic distortion (THD) content is critical and must be within the allowable range. To prove the feasibility of the reference signal with carrier signal schemes, the entire simulation of the modulation techniques is established and conducted via the Simulink environment. According to the analyzed result, the performance is acceptable in terms of %THDV and %THDI values. Simulation analysis also indicates, at full modulation depth, due to higher fundamental output voltage component produces via the THIPWM modulation technique compared to the SPWM technique, this causes higher %THDV value.
这项工作提出了正弦和三次谐波注入参考信号调制与电平移位PWM技术的比较分析,称为相位配置(LSPD),相位对抗配置(LSPOD),以及交替相位对抗配置(LSAPOD)和相移PWM技术。将参考信号和PWM技术的开关脉冲馈入由阻感性负载供电的三相11电平级联h桥多电平逆变器(CHBMLI),调制深度(MD)设置为80% ~ 100%。对于电压源型逆变器,总谐波失真(THD)含量至关重要,必须在允许范围内。为了证明参考信号与载波信号方案的可行性,通过Simulink环境建立并进行了调制技术的整个仿真。根据分析结果,在%THDV和%THDI值方面,性能是可以接受的。仿真分析还表明,在全调制深度下,由于与SPWM技术相比,通过THIPWM调制技术产生的基波输出电压更高,这导致更高的%THDV值。
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引用次数: 3
Effect of blade pitch angle on the aerodynamic characteristics of a twisted blade horizontal axis wind turbine based on numerical simulations 基于数值模拟的叶片俯仰角对扭叶水平轴风力机气动特性的影响
Q2 Energy Pub Date : 2021-03-01 DOI: 10.11591/IJPEDS.V12.I1.PP511-519
R. Roul, Awadhesh Kumar
The present work includes a study of the impact of varying pitch angles and angular velocity on the performance parameters of a horizontal axis wind turbine using computational fluid dynamics. Simulations have been made using commercial Ansys 15 software. Seven pitch angles are chosen for study, i.e., 0° , 5 ° , 10° , 15° , 20° , 25° , and 28°, and two angular velocity values of 1.57 rad/sec and 2.22 rad/sec are used for simulation. The turbulence model used is shear stress transport (SST) K-ω. A detailed study of the influence of pitch angle on the aerodynamic characteristics of the wind turbine is highlighted. Performance parameters like torque and power have been found to exhibit random variability with a change in wind velocity and pitch angle. The verification of computational fluid dynamics (CFD) with the standard empirical formula is highlighted. The best pitch angle is noted for the best power coefficient.
目前的工作包括使用计算流体动力学研究变桨角和角速度对水平轴风力涡轮机性能参数的影响。已经使用商业Ansys 15软件进行了模拟。选择了7个俯仰角进行研究,即0°、5°、10°、15°、20°、25°和28°,并使用1.57 rad/sec和2.22 rad/sec两个角速度值进行模拟。所使用的湍流模型是剪切应力传输(SST)K-ω。重点研究了桨距角对风力涡轮机气动特性的影响。已经发现,扭矩和功率等性能参数随着风速和桨距角的变化而表现出随机变化。重点介绍了用标准经验公式对计算流体力学(CFD)的验证。最佳桨距角表示最佳功率系数。
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引用次数: 1
Allocating active power loss with network reconfiguration in electrical power distribution systems 配电网重构中有功功率损耗的分配
Q2 Energy Pub Date : 2021-03-01 DOI: 10.11591/IJPEDS.V12.I1.PP130-138
A. Hota, S. Mishra, D. Mishra, S. Salkuti
This paper presents a branch exchange (BE) based heuristic network reconfiguration technique where, the proposed bus classification strategy remodels dynamically as per the modified topology in order to provide a reconfigured network with minimum loss. Further, for fair allocation of the active power losses, it develops a new active power loss allocation (APLA) technique which eradicates the influence of cross-term analytically from loss formulation without any assumptions and approximations. The effectiveness of the proposed procedure has been investigated against other established methods using a 69-bus radial distribution network (RDN). The results of APLA achieved for original and reconfigured 69-bus RDN are found to be promising and judicious as regard to their load demands and geographical locations. The implementation of present reconfiguration procedure provides a total loss reduction benefit of 55.73% to the utility which highlights the significance of the developed procedure against other established techniques.
本文提出了一种基于分支交换(BE)的启发式网络重构技术,其中,所提出的总线分类策略根据修改后的拓扑结构进行动态重构,以提供具有最小损耗的重构网络。此外,为了公平分配有功功率损耗,它开发了一种新的有功功率损耗分配(APLA)技术,该技术在没有任何假设和近似的情况下,从损耗公式中分析消除了交叉项的影响。针对使用69总线径向配电网(RDN)的其他既定方法,对所提出程序的有效性进行了研究。对于原始和重新配置的69总线RDN,APLA的结果是有希望的,并且就其负载需求和地理位置而言是明智的。本重新配置程序的实施为公用事业公司提供了55.73%的总损失减少效益,这突出了所开发程序相对于其他既定技术的重要性。
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引用次数: 6
A new multilevel inverter topology based on switched-capacitor technique 一种基于开关电容技术的新型多电平逆变器拓扑
Q2 Energy Pub Date : 2021-03-01 DOI: 10.11591/IJPEDS.V12.I1.PP627-636
S. Kakar, S. Ayob, M. Saad bin Arif, N. M. Nordin, Z. Daud, R. Ayop
This paper presents a new multilevel inverter based on the switched-capacitor technique. The topology aims for renewable energy and fuel cell applications that demand high magnitude output ac voltage. This configuration of the inverter can produce a total of thirteen voltage levels using a single DC source. The topology features voltage boosting with a triple gain of the input voltage source without utilizing a boost DC-DC converter. Furthermore, the voltages of the capacitors are self-balanced at any desired voltage level during each cycle. Therefore, auxiliary circuits are no longer needed. A comparative study of the presented inverter with the classical topologies and recently introduced topologies has been done in power switches, driver circuits, blocking voltage of the switches, and boosting the input voltage. A simple fundamental switching scheme is applied to the proposed topology to validate the viability of the topology.
本文提出了一种基于开关电容技术的新型多电平逆变器。该拓扑结构适用于需要高输出交流电压的可再生能源和燃料电池应用。逆变器的这种配置可以使用单个直流电源产生总共十三个电压电平。该拓扑结构的特点是在不使用升压DC-DC转换器的情况下,以输入电压源的三倍增益进行升压。此外,在每个循环期间,电容器的电压在任何期望的电压电平下都是自平衡的。因此,不再需要辅助电路。对所提出的逆变器与经典拓扑和最近引入的拓扑在功率开关、驱动电路、开关的阻断电压和提高输入电压方面进行了比较研究。将一个简单的基本切换方案应用于所提出的拓扑,以验证拓扑的可行性。
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引用次数: 2
Sliding mode control design of wind power generation system based on permanent magnet synchronous generator 基于永磁同步发电机的风电系统滑模控制设计
Q2 Energy Pub Date : 2021-03-01 DOI: 10.11591/IJPEDS.V12.I1.PP393-403
Nada Zine Laabidine, A. Errarhout, Chakib El Bakkali, K. Mohammed, B. Bossoufi
This paper aims to implement a new contribution for sliding mode control (SMC) of permanent magnet synchronous generator (PMSG) for wind systems conversion with track the maximum power point tracking (MPPT) power. The SMC is a very popular approach due to its robustness in dealing with the non-linear electrical power systems. In this work, the application of the SMC control is by using the non lineare model of the PMSG. The objective of this work is to control stator active and stator reactive power, and the voltage-frequency for a better injection into the network. The results obtained show better robustness.
本文旨在实现一种新的方法,用于永磁同步发电机(PMSG)的滑模控制(SMC),以跟踪风电系统的最大功率点跟踪(MPPT)功率。SMC由于其在处理非线性电力系统时的鲁棒性而成为一种非常流行的方法。在本工作中,SMC控制的应用是利用PMSG的非线性模型。本工作的目的是控制定子有功功率和定子无功功率,并将电压频率更好地注入电网。结果表明,该方法具有较好的鲁棒性。
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引用次数: 2
Simulation model of single phase PWM inverter by using MATLAB/Simulink 基于MATLAB/Simulink的单相PWM逆变器仿真模型
Q2 Energy Pub Date : 2021-03-01 DOI: 10.11591/IJPEDS.V12.I1.PP212-216
S. W. Shneen, Fatin Nabeel Abdullah, D. H. Shaker
This work is presenting under the title simulation model of single phase PWM inverter by using MATLAB/Simulink. There are many researchers’ works in this field with the different ways because it is important field and it has many applications. The converter DC power to AC power for any system that mean it need the power electronic device (inverter). The inverter is using when the source DC power and the load AC power. In this work, the simulation system includes the source 300V DC power, inverter, LC filter and load (R). The simulation result shows the waveform of all part in this system like input and output current and voltage.
本文采用MATLAB/Simulink实现了单相PWM逆变器的仿真模型。该领域是一个重要的研究领域,具有广泛的应用前景,研究人员在该领域开展了不同的研究工作。将直流电源转换为交流电源对于任何系统来说都意味着它需要电力电子器件(逆变器)。逆变器使用时,源电源为直流电源,负载为交流电源。在本工作中,仿真系统包括源300V直流电源、逆变器、LC滤波器和负载(R),仿真结果显示了系统各部分的输入输出电流和电压波形。
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引用次数: 10
Design and simulation of Lidar based control system for wind turbine 基于激光雷达的风力机控制系统设计与仿真
Q2 Energy Pub Date : 2021-03-01 DOI: 10.11591/IJPEDS.V12.I1.PP542-550
A. Iqbal, Deng Ying, F. Akhter, M. Panjwani, Danish Khan
Renewable energy sources could be the main contributor to fulfilling the world’s energy requirement. Wind energy is grabbing the world’s attention due to its abundant nature and reliability. Wind energy is a prominent renewable energy source due to its availability and higher reliability. Despite the aforementioned benefits, there are some challenges such as wind measurement and prediction due to the turbulent nature of the wind. Lidar (light detection and ranging) technology is used in wind turbines to preview the wind and act it accordingly. Wind speed along with the direction is measured by the Lidar before it reaches the wind turbine plane and the control system of the wind turbine utilizes this data for optimal results. It enhances the control system along with it optimizes the output power. This paper presents the Lidar simulation model, which previews the wind earlier than the conventional feedback method. The Lidar simulation model is prepared and implemented on the horizontal axis wind turbine. The simulation is performed in GH Bladed at a 2.0 MW wind turbine. The output results are analyzed with the former method. The power extracted, pitch angle, rotor torque obtained from the proposed methodology proves its efficacy.
可再生能源可能是满足世界能源需求的主要贡献者。风能以其丰富性和可靠性吸引了全世界的目光。风能因其可用性和较高的可靠性而成为一种突出的可再生能源。尽管有上述好处,但由于风的湍流性质,仍然存在一些挑战,例如风的测量和预测。激光雷达(光探测和测距)技术被用于风力涡轮机,以预览风力并采取相应的行动。在风速到达风力涡轮机平面之前,激光雷达会测量风速和风向,风力涡轮机的控制系统利用这些数据来获得最佳结果。在优化输出功率的同时,提高了控制系统的性能。本文提出了一种激光雷达模拟模型,该模型比传统的反馈方法更早地预测了风向。建立了激光雷达仿真模型,并在水平轴风力机上进行了仿真。仿真是在2.0 MW风力发电机GH叶片上进行的。用前一种方法对输出结果进行了分析。利用该方法得到的功率提取、俯仰角、转子转矩等参数均证明了该方法的有效性。
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引用次数: 0
Experimental study of the VFD’s speed stabilization efficiency under torque disturbances 转矩扰动下变频器稳速效率的实验研究
Q2 Energy Pub Date : 2021-03-01 DOI: 10.11591/IJPEDS.V12.I1.PP80-87
V. Kodkin, A. Anikin
The article presents a technique for experimental research of variable frequency drives experiencing periodic torque disturbances of variable frequency. The technique is based on the nonlinear transfer function of a link of an asynchronous electric motor, which forms an electromagnetic torque, proposed in previously published articles. The dependence of the transfer function on the frequency of the stator voltage and slip determines the research methodology. Experiments have shown the advantage of the dynamic characteristics of a drive with a positive feedback on the stator current over electric drives with traditional control methods (vector and scalar sensorless), and in terms of dynamic characteristics they also exceed drives with a vector control closed in motor speed. These advantages are retained when the frequency of change of the disturbing torque is changed from 0 to 5 Hz.
本文提出了一种针对周期性变频转矩扰动的变频驱动器进行实验研究的方法。该技术基于异步电动机连杆的非线性传递函数,该传递函数形成电磁转矩,在先前发表的文章中提出。传递函数对定子电压和转差频率的依赖关系决定了研究方法。实验表明,具有定子电流正反馈的驱动器的动态特性优于具有传统控制方法(无矢量和标量传感器)的电驱动器,并且在动态特性方面也优于具有电机速度封闭矢量控制的驱动器。当干扰转矩的变化频率从0变为5hz时,这些优点仍然保留。
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引用次数: 4
Reactive power sharing among distributed generators in a microgrid by using virtual current 利用虚电流实现微电网分布式发电机无功分担
Q2 Energy Pub Date : 2021-03-01 DOI: 10.11591/IJPEDS.V12.I1.PP99-111
Eder A. Molina-Viloria, John Edwin Candelo Becerra, F. H. Velasco
This paper presents a new autonomous effective power distribution control strategy for three-phase parallel inverters. The proposal uses a controller that can provide the system with accurate power sharing among distributed generators installed in the microgrid once some load variations are presented in the network. The methodology uses a virtual current loop introduced into the current controller of the inverter to optimize the output signal, which goes directly to the PWM. This virtual current is obtained by using a virtual impedance loop. Furthermore, a small-signal model of the system is used to check stability of the proposed control strategy, which was developed for island mode operation of the microgrid. Simulations were performed for a microgrid with two generators and a load with five households and implemented in MATLAB/Simulink software. The results show that the model provides a wide margin of stability and a rapid response when electrical loads change, thus fulfilling the reactive power sharing among generators. The proposed method shows a large margin of stability and a rapid transient response of the system.
本文提出了一种新的三相并联逆变器的自主有效配电控制策略。该方案使用了一种控制器,一旦网络中出现一些负载变化,该控制器可以在安装在微电网中的分布式发电机之间为系统提供精确的功率共享。该方法使用引入逆变器的电流控制器中的虚拟电流回路来优化直接进入PWM的输出信号。该虚拟电流是通过使用虚拟阻抗回路来获得的。此外,还使用系统的小信号模型来检查所提出的控制策略的稳定性,该策略是为微电网的孤岛模式运行而开发的。对具有两台发电机和五户家庭负载的微电网进行了仿真,并在MATLAB/Simulink软件中实现。结果表明,该模型在电力负荷变化时具有较大的稳定性和快速响应能力,从而实现了发电机之间的无功功率共享。所提出的方法显示了系统的大的稳定性和快速的瞬态响应。
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引用次数: 2
A review of building integrated photovoltaic: case study of tropical climatic regions 建筑一体化光伏技术综述:以热带气候地区为例
Q2 Energy Pub Date : 2021-03-01 DOI: 10.11591/IJPEDS.V12.I1.PP474-488
M. Abdullahi, A. Mas’ud, I. A. Masud, J. Ardila-Rey, F. Muhammad-Sukki, Ridoan Karim, A. Saudi, N. Bani, Asan Vernyuy Wirba
The building integrated photovoltaic (BIPV) system have recently drawn interest and have demonstrated high potential to assist building owners supply both thermal and electrical loads. In this paper, the BIPV technology has been reviewed, in terms of its performance, efficiency and power generation capacity. Specifically, the applications of the BIPV in tropical climate regions have been discussed, together with its prospects and challenges. For these schemes to be implemented in a tropical climatic region, the following issues must be considered: 1) Certain studies must be done relating to electrical load demand, predicted PV output, location of the buildings and its integration and constraints associated with roof design; 2) For the highest energy production from solar PV, the solar collectors need to be with the right tilt depending on the location; 3) Design criteria such as safety, efficiency, durability, flexibility and constructive issues need to be considered; 4) The government of such countries must train electricians and carpenters on PV installations; 5) The BIPV roofing must perform same function as normal roofing materials, such as noise protection, water tightness, insulation and climate protection, and 6) As practiced around the world, these countries must establish design standards for the BIPV.
建筑集成光伏(BIPV)系统最近引起了人们的兴趣,并显示出帮助建筑物业主提供热负荷和电力负荷的巨大潜力。本文对BIPV技术的性能、效率和发电能力进行了综述。具体来说,讨论了BIPV在热带气候地区的应用,以及它的前景和挑战。要在热带气候地区实施这些方案,必须考虑以下问题:1)必须进行与电力负荷需求、预测光伏输出、建筑物位置及其集成以及与屋顶设计相关的限制有关的某些研究;2)为了使太阳能光伏发电产生最高的能量,太阳能集热器需要根据位置的不同而倾斜;3)设计标准,如安全性、效率、耐久性、灵活性和建设性问题需要考虑;4)这些国家的政府必须培训电工和木匠安装光伏设备;5) BIPV屋面必须具有与普通屋面材料相同的功能,如隔音、水密、隔热和气候保护。6)根据世界各国的实践,这些国家必须制定BIPV的设计标准。
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引用次数: 4
期刊
International Journal of Power Electronics and Drive Systems
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