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2016 IEEE International Conference on Power and Energy (PECon)最新文献

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A ZVS DC-DC converter with resonant inductor and back-to-back switch 带谐振电感和背靠背开关的ZVS DC-DC变换器
Pub Date : 2016-11-01 DOI: 10.1109/PECON.2016.7951603
Min-Ho Ahn, Jin-Hyuk Park, Kyo-Beum Lee
This paper proposes zero voltage switching (ZVS) bi-directional DC-DC converter with auxiliary circuit. The conventional DC-DC converter has the problem which is switching loss by the hard switching. The proposed ZVS bi-directional DC-DC converter uses the soft switching with an additional circuit to decrease the switching loss. The additional circuit is made up the resonant inductor and back-to-back switch. It is possible to operate ZVS of all switches through the stored energy in resonant inductor of the auxiliary circuit. Therefore, the efficiency of whole system can be improved. The proposed topology is verified from PSIM simulations using 3-kW ZVS bi-directional DC-DC converter.
提出了一种带辅助电路的零电压开关双向DC-DC变换器。传统的DC-DC变换器存在硬开关造成开关损耗的问题。本文提出的ZVS双向DC-DC变换器采用软开关和附加电路来降低开关损耗。附加电路由谐振电感和背靠背开关组成。通过辅助电路谐振电感中存储的能量,可以操作所有开关的零电压。因此,可以提高整个系统的效率。采用3kw ZVS双向DC-DC变换器的PSIM仿真验证了所提出的拓扑结构。
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引用次数: 0
Enhanced chaotic spiral dynamic algorithm with application to controller design 改进混沌螺旋动态算法及其在控制器设计中的应用
Pub Date : 2016-11-01 DOI: 10.1109/PECON.2016.7951659
M. R. Hashim, M. Tokhi
This paper present an enhanced chaotic spiral dynamic algorithm (ECSDA) for optimization problems and their application in single link flexible manipulator system (SLFMS). The algorithm is developed by integrating logistic chaotic pattern into the original spiral dynamic algorithm (SDA). The artificial bee colony optimization (ABC) searching method is also adopted in ECSDA to increase its capability to find the best possible local optimum solution. This hybrid technique reduces the probability of ECSDA getting trapped at local optimum. ECSDA is used to optimize the PD controller parameters of a single link flexible manipulator system (SLFMS). The results show that the ECSDA outperforms the SDA with improved search capability and escaping local optima and is able to tune the PD controller of SLFMS for the desired output.
针对单连杆柔性机械臂系统的优化问题,提出了一种改进型混沌螺旋动力学算法(ECSDA)及其应用。该算法将逻辑混沌模式整合到原有的螺旋动态算法(SDA)中。ECSDA还采用了人工蜂群优化(ABC)搜索方法,提高了其寻找最优可能局部最优解的能力。这种混合技术降低了ECSDA陷入局部最优的概率。利用ECSDA对单连杆柔性机械臂系统的PD控制器参数进行优化。结果表明,ECSDA在改进搜索能力和逃避局部最优方面优于SDA,并且能够根据期望输出调整SLFMS的PD控制器。
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引用次数: 3
Charging of Electric Vehicle with Constant Price Using Photovoltaic Based Grid-connected System 基于光伏并网系统的电动汽车固定价格充电
Pub Date : 2016-11-01 DOI: 10.1109/PECON.2016.7951571
A. R. Bhatti, Z. Salam
The charging of plug-in electric vehicle (PEV) imposes an additional burden on the utility grid, particularly during the (day) peak hours. This burden is normally controlled by shifting PEV charging to the grid off-peak hours. This shifting not only reduces the autonomy of anytime charging but also creates the uncertainty about the charging price every hour. To mitigate this problem, this paper proposes an energy management scheme (EMS) for the charging station that combines the photovoltaic (PV) and energy storage unit (ESU) with the grid. The models for PV power, ESU, PEV demand and grid electricity price are developed as the components of EMS. The scheme is capable of providing interruption-less charging during day-time. Moreover, the EMS has the capability to charge PEV with constant per unit price at and below the level of solar grid parity. The additional feature of EMS is that it can fulfill charging demand of each PEV within one hour at a lower price than standard grid (SG) charging while reducing the extra burden on the grid. The idea to reduce the economic loss of charging station due to cheaper and constant price charging is the involvement of valley-filling operation by both ESU and PEV along with selling the surplus PV energy to the grid. The EMS algorithm comprises of rule-based strategies. To determine the effectiveness of the scheme, numerous charging scenarios are simulated using Matlab. The initial results indicate that the charging through proposed scheme is much cheaper than the charging by conventional SG scheme. Moreover, it has shown to reduce the considerable amount of EV charging burden from the grid. It is envisaged that this is the first effort to propose constant price PEV charging and it will provide an exciting prospect in the field of PEV charging using renewable energy sources.
插电式电动汽车(PEV)的充电给电网带来了额外的负担,特别是在(白天)高峰时段。这种负担通常是通过将电动汽车充电转移到电网的非高峰时段来控制的。这种转变不仅降低了随时充电的自主性,而且造成了每小时充电价格的不确定性。为了缓解这一问题,本文提出了一种将光伏(PV)和储能单元(ESU)与电网相结合的充电站能量管理方案(EMS)。建立了光伏发电、ESU、PEV需求和电网电价模型,作为EMS的组成部分。该方案能够在白天提供无中断充电。此外,EMS有能力以恒定的每单位价格向PEV充电,并低于太阳能电网平价水平。EMS的另一个特点是,它可以以低于标准电网(SG)充电的价格在1小时内满足每辆电动汽车的充电需求,同时减少了电网的额外负担。由于更便宜和恒定的价格充电,减少充电站经济损失的想法是ESU和PEV都参与山谷填充操作,并将剩余的光伏能源出售给电网。EMS算法由基于规则的策略组成。为了确定该方案的有效性,使用Matlab对多个充电场景进行了仿真。初步结果表明,该方案的充电成本远低于传统SG方案的充电成本。此外,它已经证明可以减少大量来自电网的电动汽车充电负担。据设想,这是第一次提出固定价格的电动汽车充电,它将为使用可再生能源的电动汽车充电领域提供令人兴奋的前景。
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引用次数: 11
Investigation of harmonic components on voltage flicker measurement 电压闪变测量中谐波分量的研究
Pub Date : 2016-11-01 DOI: 10.1109/PECON.2016.7951464
Z. P. Goh, M. Radzi, H. Hizam, N. Wahab
Harmonics and voltage flicker are increasing dramatically in power system due to wide use of non-linear loads. Specifically, voltage flicker is detected due to fluctuation of Root-Means-Square (rms) value. Meanwhile, harmonics with certain components may lead to fluctuation of rms value too. Then, harmonic components may give significant impact on voltage flicker measurement. Therefore, this paper points out a worthwhile research gap regarding investigation of harmonic components on voltage flicker measurement. For further validation of the work, various harmonic orders and percentage injections generated from programmable AC source are analyzed by flickermeter (Fluke power analyzer 435 series II). From the findings, it is confirmed that second order harmonic component gives the most significant impact on voltage flicker measurement. Most importantly, a new linear expression is formed to clearly describe relationship between Short Term Perceptibility (Pst) and percentage of second harmonic component.
由于非线性负荷的广泛使用,电力系统中的谐波和电压闪变现象急剧增加。具体来说,检测电压闪变是由于均方根值的波动。同时,含有某些分量的谐波也会导致均方根值的波动。谐波分量对电压闪变测量有很大的影响。因此,本文指出了电压闪变测量中谐波分量的研究是一个值得研究的空白。为了进一步验证工作,通过闪变计(Fluke功率分析仪435系列II)分析了可编程交流电源产生的各种谐波阶数和百分比注入。从研究结果来看,二阶谐波分量对电压闪变测量的影响最为显著。最重要的是,形成了一个新的线性表达式,清晰地描述了短期感知性(Pst)与二次谐波分量百分比之间的关系。
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引用次数: 3
Optimisation of solar PV plant locations for grid support using genetic algorithm and pattern search 利用遗传算法和模式搜索优化电网支持的太阳能光伏电站位置
Pub Date : 2016-11-01 DOI: 10.1109/PECON.2016.7951536
V. Vermeulen, J. Strauss, H. Vermeulen
This paper presents the results of an exploratory study aimed at investigating the impacts of optimisation of PV plant locations in South Africa in the context of the seasonal and diurnal cycles associated with the system load profiles and solar generation profiles. The distribution of a normalised per-unit generation capacity is optimised across a set of locations chosen to represent the diurnal cycle along a west-east axis and the seasonal cycle along a north-south axis, using local solar irradiance profiles for the candidate sites. Optimisations are conducted for a range of objective functions representing different scenarios defined in terms of seasonal considerations and time-of-use (TOU) periods using both genetic algorithm (GA) and pattern search methods in the MATLAB simulation environment. Comparative analysis of the optimisation results indicate that the latitude of PV plant locations plays a significant role in seasonal performance, while optimisation along a longitude dimension offers higher power generation during daily peak demand periods.
本文介绍了一项探索性研究的结果,该研究旨在调查与系统负载概况和太阳能发电概况相关的季节性和昼夜周期背景下南非光伏电站位置优化的影响。标准化的单位发电量分布在一系列地点进行优化,这些地点沿着东西轴代表昼夜周期,沿着南北轴代表季节周期,使用候选地点的当地太阳辐照度剖面。在MATLAB仿真环境中,使用遗传算法(GA)和模式搜索方法,对一系列目标函数进行了优化,这些目标函数代表了根据季节考虑和使用时间(TOU)周期定义的不同场景。优化结果的对比分析表明,光伏电站位置的纬度在季节性性能中起着重要作用,而沿着经度维度的优化在每日需求高峰期间提供更高的发电量。
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引用次数: 8
Piezoelectric impact-driven energy harvester 压电冲击驱动能量采集器
Pub Date : 2016-11-01 DOI: 10.1109/PECON.2016.7951596
Ali M. Abdal-Kadhim, Swee Leong Kok
This paper evaluates a micro generator based on a piezoelectric transducer bending mechanism where impact force is being exerted onto the bending beam and hence generating electrical power across an external resistive load. The proposed bending mechanism prototype has been manufactured by using 3D printer in order to conduct the evaluation. A free fall test has been conducted as the evaluation method with variation of masses and different fall heights which produce different forces. In this experiment a piezoelectric transducer with size of rectangle 32mm in width, 70mm in length, and 0.55mm in thickness used to conduct the experiment. The experiment results show that the instantaneous AC volt output peak is increasing toward the maximum voltage of about 50V when an impact force of about 80N and above is being applied. It is also found out that a maximum DC power of about 8.8mW is generated at an impact force of 50N when it is connected to an external resistive load of 0.175KΩ.
本文评估了一种基于压电换能器弯曲机构的微型发电机,在该机构中,冲击力被施加到弯曲梁上,从而通过外部电阻负载产生电能。利用3D打印机制作了弯曲机构原型,并对其进行了评价。以自由落体试验作为评价方法,考虑了质量的变化和落体高度的不同,产生的作用力也不同。在本实验中,使用的压电换能器尺寸为矩形,宽32mm,长70mm,厚0.55mm。实验结果表明,当施加约80N及以上的冲击力时,交流电压瞬时输出峰值向最大电压约50V方向增大。还发现,当与外部电阻性负载0.175KΩ连接时,在50N的冲击力下,产生的最大直流功率约为8.8mW。
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引用次数: 5
A comparison study of interpolation and circuit based photovoltaic mathematical models 基于插值和电路的光伏数学模型的比较研究
Pub Date : 2016-11-01 DOI: 10.1109/PECON.2016.7951636
R. Ayop, Chee Wei Tan
In the photovoltaic (PV) emulator application, an accurate PV mathematical model is needed to ensure the emulator can produce the same current-voltage (I-V) characteristic of a PV panel. The PV circuit model is able to simulate the PV panel accurately. However, this model requires the numerical method to solve the implicit equation of the model and the complex parameter extraction can burden the PV emulator controller. A simple and flexible PV model is needed for the PV emulator without compromising its accuracy. Two interpolation models are compared in term of adaptability, simplicity and accuracy with single diode model with series resistance (1D1R model) to determine the suitable PV model for the PV emulator system. The 1D1R Model is more accurate and adaptable compared to the interpolation models. However, the Interpolation models perform faster compared to the circuit model.
在光伏(PV)仿真器的应用中,为了保证仿真器能够产生与光伏面板相同的电流-电压(I-V)特性,需要精确的PV数学模型。该光伏电路模型能够准确地模拟光伏面板。然而,该模型需要采用数值方法求解模型的隐式方程,且复杂的参数提取会给PV仿真器控制器带来负担。在保证仿真精度的前提下,需要一个简单灵活的PV模型。将两种插补模型与串联电阻的单二极管模型(1D1R模型)在适应性、简便性和精度上进行了比较,以确定适合PV仿真系统的PV模型。与插值模型相比,1D1R模型具有更高的精度和适应性。然而,与电路模型相比,插值模型执行速度更快。
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引用次数: 9
Non-PLL for fast grid-inverter synchronization in microgrids applications 微电网中快速并网逆变同步的非锁相环
Pub Date : 2016-11-01 DOI: 10.1109/PECON.2016.7951548
M. R. Amin, S. A. Zulkifli
In this paper, a fast-synchronization between grid and inverter based on virtual synchronous converter (VSCon) technique is achieved in single-phase inverter. Consequently, this technique is designed and simulated in Matlab/Simulink platform to perceive the significances during variation of grid load parameters. The VSCon is implemented for inverter output control that has a behavior of grid voltage and frequency synchronization using droop control mechanism. This technique has been tested in inverter-microgrid connection with several loads connected. In case of 0.1 Hz grid frequency changes in grid test, it takes nearly 230ms to synchronize between inverter and grid frequency even with loads connected to the test system. Hence, this proposed technique can be implemented in microgrids with several distributed generation sources without using the PLL for fast synchronization between grid-inverters.
本文在单相逆变器中实现了基于虚拟同步变换器(VSCon)技术的电网与逆变器的快速同步。因此,在Matlab/Simulink平台上设计并仿真了该技术,以感知电网负荷参数变化的意义。利用下垂控制机制实现了具有电网电压和频率同步特性的逆变器输出控制。该技术已在多个负载并网的逆变器-微电网连接中进行了测试。在电网测试中,当电网频率变化为0.1 Hz时,即使有负载接入测试系统,逆变器与电网频率同步也需要近230ms的时间。因此,该技术可以在具有多个分布式发电源的微电网中实现,而无需使用锁相环在电网逆变器之间进行快速同步。
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引用次数: 3
Development of self-powered thermoelectric based RF transmitter circuit 基于自供电热电的射频发射电路的研制
Pub Date : 2016-11-01 DOI: 10.1109/PECON.2016.7951602
G. Yun, Swee Leong Kok, Mohd Fauzi Bin Abdul Rahman
Thermoelectric generator (TEG) converts heat energy into electrical energy when there is a temperature gradient between top and bottom surface of the device. Generally, large electronic system or electronic display generates heat which dissipate via the surface of the device which may affect the functionality and lifetime of the systems or devices. Therefore, TEG can be used to utilize the heat and converts into useful electrical energy while keeping the temperature down. This paper discusses the application of the TEG in powering an RF transmitter circuit. This mechanism is referred to as self-powering whereby the RF transmitter is powered by the heat itself without the use of a battery. Once the threshold of the voltage, which is 2.9 V is being generated by the TEG, the RF transmitter controller unit will be trigger and a bit signal will be sent to a receiver station at a few meters away. In the experimental setup, hotplate is being used to simulate the heat dissipated from the ambient environment. A power conditioning circuit for the TEG is also presented in this paper.
热电发生器(TEG)是在器件上下表面存在温度梯度时,将热能转化为电能的装置。一般来说,大型电子系统或电子显示器会产生热量,这些热量会通过设备表面散失,这可能会影响系统或设备的功能和使用寿命。因此,TEG可以用来利用热量并将其转化为有用的电能,同时保持较低的温度。本文讨论了TEG在射频发射电路供电中的应用。这种机制被称为自供电,即射频发射机由热量本身供电,而无需使用电池。一旦TEG产生2.9 V的电压阈值,射频发射机控制器单元将被触发,并将位信号发送到几米外的接收站。在实验装置中,热板被用来模拟从周围环境中散失的热量。本文还设计了一种用于TEG的功率调节电路。
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引用次数: 3
Optimal shunt capacitor placement in radial distribution system 径向配电系统中并联电容器的优化配置
Pub Date : 2016-11-01 DOI: 10.1109/PECON.2016.7951465
R. Idris, N. Zaid
This paper proposed a Cuckoo Search Algorithm (CSA) method to identify the optimal location and size of shunt capacitor in radial distribution system. The main objective is to reduce the power loss in the system by using the reactive power compensation strategy. The proposed method is tested on IEEE 33-bus and 69-bus system and then verified with Particle Swarm Optimization (PSO). The proposed method results seem to surpass the solution given by PSO technique not only in power loss reduction, but also in convergence performance.
提出了一种布谷鸟搜索算法(CSA)来确定径向配电系统中并联电容器的最佳位置和尺寸。主要目的是通过采用无功补偿策略来降低系统的功率损耗。该方法在IEEE 33总线和69总线系统上进行了测试,并用粒子群优化(PSO)进行了验证。该方法不仅在降低功率损耗方面优于粒子群算法,而且在收敛性能方面也优于粒子群算法。
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引用次数: 9
期刊
2016 IEEE International Conference on Power and Energy (PECon)
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