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2018 Asian Conference on Energy, Power and Transportation Electrification (ACEPT)最新文献

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A New Control Method for Harmonic Compensating and Resonance Damping in Hybrid Filter 一种新的混合滤波器谐波补偿和谐振阻尼控制方法
Pub Date : 2018-10-01 DOI: 10.1109/ACEPT.2018.8610734
Huanming Liu, Min Zhang, Yunlei Yang, Shengwen Li, Huijie Du, Chenxu Lv, Libin Zhu, Xiaoqing Han, Lei Wang
Transformerless Shunt Hybrid Active Power Filter (TLS - HAPF), benefiting from its active part undertake almost no fundamental voltage, can be used in medium-voltage power distribution system for harmonic and reactive power compensation. Besides, the TLS-HAPF can also damp out the series/parallel resonance between the existing passive reactive compensation device and line inductance in the power grid. Based on the grid-side harmonic detection and the capacitve current feedback, this paper proposes a novel control strategy for TLS - HAPF to compensate harmonics from nonlinear loads and damp resonance between shunt power-factor-correction capacitors and line inductance simultaneously. Simulation results have confirmed that the filtering performance can be improved by the proposed control strategy.
无变压器并联混合有源电力滤波器(TLS - HAPF)由于其有源部分几乎不承担基波电压,可用于中压配电系统中进行谐波和无功补偿。此外,TLS-HAPF还可以抑制电网中现有无源无功补偿装置与线路电感之间的串并联谐振。基于电网侧谐波检测和电容电流反馈,提出了一种新的tlshapf控制策略,可同时补偿非线性负载谐波和并联功率因数校正电容器与线路电感之间的阻尼谐振。仿真结果表明,所提出的控制策略可以提高滤波性能。
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引用次数: 0
Review of Biofouling Paints on the Marine Vessel 船舶生物防污涂料研究进展
Pub Date : 2018-10-01 DOI: 10.1109/ACEPT.2018.8610796
S. Manoj, S. Mahesh, D. N. Srikanth
Marine antifouling is an important issue as the adhesion of marine bio fouling organisms on the surfaces of marine vessels and turbines causes extra energy consumption due to increased drag and added mass, decreasing operational efficiency, high maintenance costs, and poor asset life due to increased corrosion on the metallic materials. A number of new anti-fouling paints claimed to be friendlier to the environment, have entered the market since prohibition of biocide containing paints that have been enforced in many areas. Biocide-free paints are considered to be less environmentally damaging and do not need an approval. The present study, reviews on the new advancement in the anti-fouling paints and their suitability towards tropical water conditions.
海洋防污是一个重要的问题,因为海洋生物污染生物在海洋船舶和涡轮机表面的粘附会导致额外的能源消耗,因为增加了阻力和质量,降低了运行效率,增加了维护成本,并且由于金属材料的腐蚀而导致资产寿命缩短。自从许多地区禁止使用含有杀菌剂的涂料以来,一些声称对环境更友好的新型防污涂料已经进入市场。不含杀菌剂的涂料被认为对环境的破坏较小,不需要批准。本文综述了防污涂料的最新研究进展及其在热带水环境中的适用性。
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引用次数: 4
Robust Frequency Regulation with Hybrid Energy Storage Systems in Islanded Microgrids 孤岛微电网混合储能系统的鲁棒频率调节
Pub Date : 2018-10-01 DOI: 10.1109/ACEPT.2018.8610785
Chengquan Ju, Yi Tang, Yu Wang
High penetration of renewable energy sources has brought about large fluctuation and rapid intermittency to power systems with low inertia, which may cause instability issues. In this paper, a robust control algorithm with hybrid energy storage systems (ESS) is developed for frequency regulation problems in islanded microgrids. The proposed method has several advantages over existing methods. First, system frequency is stabilized in a robust way despite internal uncertainties and external disturbances. Second, the synchronous generator, battery and supercapacitor are scheduled to provide the instantaneous power mismatch cooperatively. Third, the SOC of hybrid ESS can be covered automatically after frequency deviation. The validity of the proposed robust control is verified by the simulation in the MATLAB environment.
可再生能源的高渗透率给低惯性的电力系统带来了较大的波动和快速的间歇性,可能导致不稳定问题。针对孤岛微电网的频率调节问题,提出了一种混合储能系统鲁棒控制算法。与现有的方法相比,所提出的方法有几个优点。首先,尽管存在内部不确定性和外部干扰,系统频率仍能鲁棒稳定。其次,同步发电机、电池和超级电容器协同调度,提供瞬时失配功率。第三,混合ESS的SOC可以在频率偏差后自动覆盖。在MATLAB环境下进行了仿真,验证了所提鲁棒控制的有效性。
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引用次数: 3
Analysis of Local Forces Acting on Stator Teeth and Magnetic Wedges in Large Synchronous Machines 大型同步电机定子齿和磁楔局部受力分析
Pub Date : 2018-10-01 DOI: 10.1109/ACEPT.2018.8610750
K. H. Chu, M. A. Prabhu, J. Pou, S. RamaKrishna, A.K. Gupta
This paper focuses on the analysis of the electromagnetic force distribution acting on the stator teeth and magnetic wedges in a large wound field synchronous machine (WFSM). The local forces are simulated using Ansys Maxwell software in 2-D finite element model (FEM) of the machine. Different shapes of magnetic wedges are used to understand their effect on the force distribution on the stator inner diameter. Forces due to rotor eccentricity are also investigated. Only rated steady-state operation is considered. Series configuration hybrid excitation synchronous machines (HESM) are proposed to reduce the stresses on both stator teeth and magnetic wedges.
对大绕线场同步电机定子齿和磁楔上的电磁力分布进行了分析。利用Ansys Maxwell软件对机床的二维有限元模型进行了局部受力仿真。研究了不同形状的磁楔对定子内径力分布的影响。还研究了转子偏心引起的力。只考虑额定稳态运行。为了减小定子齿和磁楔的应力,提出了串联结构的混合励磁同步电机。
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引用次数: 1
Geospatial Model to Estimate Wind Energy Resource Potential in Remote Locations 估算偏远地区风能资源潜力的地理空间模型
Pub Date : 2018-10-01 DOI: 10.1109/ACEPT.2018.8610708
Dr. Srikanth Narasimalu, Ranjith Narasimhamurthy, A. Kannan
Remote locations in developing regions are experiencing one-fifth energy per capita and heavily depend on fossil fuels. To enhance energy security, all possible renewable energy resources should be exploited. The present state of the art technology demands deployment of wind mast and lidar based infrastructure which is laborious and costly and hence demands preliminary data for justification. This paper discusses a roughness estimation from a geospatial model from which the wind profile and the wind energy density can be estimated. Further spatial and temporal variation help perform macro level techno-economic estimates to identify best wind turbine placement sites and/or wind farm design sites which can be further confirmed by micro-level wind energy site assessment such as wind mast or lidar deployment complimented with computational fluid dynamics model of the terrain.
发展中地区偏远地区的人均能源消耗为五分之一,严重依赖化石燃料。为了加强能源安全,应该开发所有可能的可再生能源。目前的技术水平要求部署风力桅杆和基于激光雷达的基础设施,这既费力又昂贵,因此需要初步的数据来证明。本文讨论了利用地理空间模型估算风廓线和风能密度的粗糙度。进一步的时空变化有助于进行宏观层面的技术经济评估,以确定最佳的风力涡轮机放置地点和/或风力发电场设计地点,这可以通过微观层面的风能地点评估进一步确认,如风桅杆或激光雷达部署,并辅以地形的计算流体动力学模型。
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引用次数: 1
A Dual-Active-Bridge Converter for Novel Trolleybus Powertrain System 新型无轨电车动力系统的双有源桥式变换器
Pub Date : 2018-10-01 DOI: 10.1109/ACEPT.2018.8610670
Xuejun Zhu
Traditional trolleybus has several shortcomings which cannot meet today’s needs. No off-line operation capability and double insulation design incompatible with present wide-spread normal electric buses are most concerned ones. Dual mode operation with diesel engine had solved the off-line operation issue whereas its zero emission image was spoiled. Equipping batteries and later in-motion-charging have in the past 27 or so years totally solved the off-line operation issue and serviced the market rather well. In this paper, a novel trolleybus powertrain system based on isolated in-motion-charging battery-charger is introduced to explain how the double insulation issue is further solved. Three such kinds of isolated battery-chargers are now available in Chinese market. The one based on dual active bridge topology is presented in great detail. It is expected that the trolleybus equipped with such a new powertrain system will accelerate its revival in the public transportation sector.
传统的无轨电车有几个缺点,不能满足今天的需要。无脱机运行能力和双绝缘设计与目前广泛应用的普通电动客车不兼容是最令人担忧的问题。柴油机双模式运行解决了脱机运行问题,但却破坏了其零排放形象。在过去27年左右的时间里,配备电池和后来的动态充电完全解决了离线运行问题,并很好地服务了市场。本文介绍了一种基于隔离式动态充电电池充电器的新型无轨电车动力系统,说明了如何进一步解决双绝缘问题。目前中国市场上有三种这样的隔离式电池充电器。详细介绍了基于双有源桥拓扑结构的双有源桥拓扑结构。预计,搭载这种新型动力系统的无轨电车将加速在公共交通领域的复兴。
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引用次数: 0
A Strategy to Evaluate MPPT Techniques 评价MPPT技术的策略
Pub Date : 2018-10-01 DOI: 10.1109/ACEPT.2018.8610792
Iqbal Azeem, Mirza Muhammad Ali Baig, Muhammad Hammad Uddin
Photovoltaic (PV) cell possesses non-linear power-voltage (P-V) characteristics. Maximum power point tracking (MPPT) techniques search the panel voltage at which maximum power can be achieved. In literature several converter topologies are used for testing and implementation of MPPT algorithm. These include buck, boost, buck-boost etc. Such implementations can't account for the efficiency of MPPT technique alone. This is due to the losses which could occur in different converter topologies. In this paper, a strategy which is based on an ideal converter, for testing the MPPT algorithms is proposed. Some of the major MPPT techniques are discussed and evaluated through the proposed strategy. Comparison among the MPPT algorithms is carried through MATLAB/Simulink. It is found that the proposed strategy is unbiased and suitable for testing MPPT algorithms.
光伏电池具有非线性的功率-电压特性。最大功率点跟踪(MPPT)技术搜索可以达到最大功率的面板电压。在文献中,几种转换器拓扑被用于测试和实现MPPT算法。包括buck, boost, buck-boost等。这样的实现不能单独说明MPPT技术的效率。这是由于在不同的转换器拓扑结构中可能发生的损耗。本文提出了一种基于理想转换器的MPPT算法测试策略。通过提出的策略,讨论和评估了一些主要的MPPT技术。通过MATLAB/Simulink对MPPT算法进行了比较。结果表明,所提出的策略是无偏的,适合于测试MPPT算法。
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引用次数: 11
Design of Repetitive Controller and Input Filter for Active Front-End Rectifier in Solid-State Transformer Under Finite Harmonics and Source Impedance 有限谐波和源阻抗条件下固态变压器有源前端整流器重复控制器和输入滤波器的设计
Pub Date : 2018-10-01 DOI: 10.1109/ACEPT.2018.8610659
Moonhyun Lee, Jongwan Kim, Jung-Muk Choe, J. Lai
This paper investigates the effects of low frequency harmonics and source impedance on active front-end rectifier in modular solid-state transformer. The topology for analysis was selected to three-level boost (TLB) converter which is widely used for power factor correction. Harmonic contents of input source cause periodic distortions in input current, degrading THD factor. In the presence of finite source impedance, performance of properly designed current controller can be deteriorated in terms of phase margin and system instability. In this paper, those external effects are studied with equivalent single module TLB. Repetitive controller and input filter designs are presented to compensate periodic distortion and overlapped impedance interaction in frequency domain, respectively. Simulation and experimental results are provided to verify the analysis.
本文研究了低频谐波和源阻抗对模块化固态变压器有源前端整流器的影响。分析选取了广泛用于功率因数校正的三电平升压(TLB)变换器的拓扑结构。输入源的谐波含量会引起输入电流的周期性畸变,降低THD因子。在源阻抗有限的情况下,合理设计的电流控制器的性能会因相位裕度和系统不稳定性而恶化。本文采用等效单模TLB对这些外部效应进行了研究。提出了重复控制器和输入滤波器设计,分别在频域补偿周期性失真和重叠阻抗相互作用。仿真和实验结果验证了分析的正确性。
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引用次数: 3
Brushless Synchronous Generator Turn-to-Turn Short Circuit Fault Detection Using Multilayer Neural Network 基于多层神经网络的无刷同步发电机匝间短路故障检测
Pub Date : 2018-10-01 DOI: 10.1109/ACEPT.2018.8610686
Pyae Phyo Tun, P. Kumar, Ryan Arya Pratama, Liu Shuyong
Stator winding short circuit is one of the faults that occur frequently in electrical machines. Therefore, fault detection and elimination in electric drive systems is necessary for safety-critical applications in order not to cause catastrophic failure to the machine in a short time. This paper reviews recent fault detection and diagnosis techniques that use signal analysis, model-based techniques and artificial intelligence machine diagnosis methods. Then, feedforward neural network will be trained, tested and validated whether or not this artificial neural network can classified healthy and different severity inter-turn short circuit levels by using per unit RMS 3 phases current and voltage quantities as well as fundamental and third harmonic components of current and voltage.
定子绕组短路是电机中常见的故障之一。因此,为了避免在短时间内对机器造成灾难性故障,电气驱动系统的故障检测和消除对于安全关键应用是必要的。本文综述了近年来使用信号分析、基于模型的技术和人工智能机器诊断方法的故障检测和诊断技术。然后,对前馈神经网络进行训练,测试并验证该人工神经网络是否能够利用单位RMS 3相电流和电压量以及电流和电压的基次和三次谐波分量来分类健康和不同严重程度的匝间短路等级。
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引用次数: 5
Design and Implementation of a DSP Controlled Bridgeless Power Factor Corrector DSP控制的无桥功率因数校正器的设计与实现
Pub Date : 2018-10-01 DOI: 10.1109/ACEPT.2018.8610830
Sheng-Ju Chen, T. Liang, Wei-Jing Tseng, Pin-Yi Liu
When conventional boost power factor corrector (PFC) circuit operates in high power application, rectifier bridge diode causes high power loss. A bridgeless PFC circuit with digital signal processor (DSP) control is implemented in this paper. Average current mode is implemented by DSP and the input current follows the input voltage. Therefore, the PFC converter achieves high power factor and low total harmonic distortion current. The operating principle of semi-boost PFC converter is analyzed and the parameters of key components are design. The software of average current mode control in DSP is described. Outer voltage loop, inner current loop and the design of the compensator are introduced. Finally, a 1.3 kw bridgeless PFC circuit with DSP control is implemented. Input voltage range is $90 V_{rms} ~ 264 V_{rms}$ and output voltage is constant 400 V. Maximum efficiency is 98.1%. Maximum power factor is 0.996 and minimum iTHD is 5.1%.
传统的升压功率因数校正(PFC)电路在大功率应用时,整流桥二极管会造成较大的功率损耗。本文实现了一种带有数字信号处理器(DSP)控制的无桥PFC电路。平均电流模式由DSP实现,输入电流随输入电压变化。因此,PFC变换器实现了高功率因数和低总谐波失真电流。分析了半升压型PFC变换器的工作原理,设计了关键器件的参数。介绍了在DSP中实现平均电流模式控制的软件。介绍了外电压环、内电流环及补偿器的设计。最后,实现了一个1.3 kw的DSP控制的无桥PFC电路。输入电压范围90v_ {rms} ~ 264v_ {rms}$,输出电压400v恒定。最高效率为98.1%。最大功率因数为0.996,最小iTHD为5.1%。
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引用次数: 0
期刊
2018 Asian Conference on Energy, Power and Transportation Electrification (ACEPT)
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