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2014 International Conference on Applied and Theoretical Electricity (ICATE)最新文献

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One efficient implementation of CPML in CE-FDTD algorithm CE-FDTD算法中CPML的一种高效实现
Pub Date : 2014-12-04 DOI: 10.1109/ICATE.2014.6972597
B. Nikolić, B. Dimitrijevic, S. Aleksic, N. Raicevic, Z. Nikolic
In this paper a modification of conventional convolutional perfectly matched layer (CPML) is performed in order to support termination of complex-envelope finite difference time domain (CE-FDTD) computational domain. The modified CPML, along with CE-FDTD algorithm has been implemented in an own developed simulation environment. The functionality of the proposed CPML is illustrated on the example of a planar excitation.
为了支持复包络有限差分时域(CE-FDTD)计算域的终止,本文对传统的卷积完美匹配层(CPML)进行了改进。改进的CPML和CE-FDTD算法已在自己开发的仿真环境中实现。以平面激励为例说明了所提出的CPML的功能。
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引用次数: 1
Loss analysis of small three-phase cage-induction motors under sinusoidal and PWM voltage supply 小型三相笼形感应电动机在正弦和PWM电压下的损耗分析
Pub Date : 2014-12-04 DOI: 10.1109/ICATE.2014.6972642
D. Irimie, A. Pop, M. Radulescu, A. Laczko
Loss analysis of small induction motors is conducted in order to show the differences by supplying with sinusoidal and PWM voltage. In the first part of the analysis, under sinusoidal voltage supply, the motor was tested according to the Canadian CSA C390-98 standard (based on IEEE 112B). These results are the reference for finite element-based and analytical loss calculations. In the second part of the analysis, the same procedure for determining the iron losses is carried out for the PWM voltage-fed induction motor. The obtained waveforms are comparatively studied, and an analytical approach is made to account for the increase of iron losses.
通过对小型感应电动机进行损耗分析,分析了正弦电压和PWM电压对小型感应电动机损耗的影响。在分析的第一部分,在正弦电压供电的情况下,根据加拿大CSA C390-98标准(基于IEEE 112B)对电机进行了测试。这些结果对基于有限元和分析的损失计算具有参考意义。在分析的第二部分中,对PWM电压馈电感应电动机进行了相同的铁损耗测定程序。对得到的波形进行了比较研究,并提出了一种解释铁损增加的解析方法。
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引用次数: 0
New aspects concerning the comparison tests between the STL reference current shunt and an ICMET standard shunt, regarded in interference with the issues of the “CMC” concept STL参考电流分流器与ICMET标准分流器对比试验的新方面,被认为与“CMC”概念的干扰问题有关
Pub Date : 2014-12-04 DOI: 10.1109/ICATE.2014.6972623
G. Curcanu, Alexandru-Marius Ionescu, Ovidiu Mihăiţă, M. Ionescu, Mihaela Iovan, Cerasela Rusu
This paper provides an overview of the comparison tests on two current shunts performed on March 2012 in ICMET Craiova as well as the consequences of this comparison for the demonstration of the traceability of the calibrations carried out by the ICMET Calibration Laboratory “C.L. - High Currents”, and other issues about the measurement uncertainties. The two current shunts which underwent the comparison program are the STL reference standard shunt for Europe and Africa and the coaxial shunt type 200kA manufactured by IPH Berlin which stands for the C.L. - ICMET standard shunt. Both of the shunts are of the same manufactory type with similar technical characteristics, thus providing the ability of comparison. The comparison results, proving little errors (in comparison with the magnitude order of the CMC having been stated for the C.L. for this kind of tests) related to the scale factor of the IPH-ICMET shunt, are consistent with the results of all its Calibration Certificates, so this is a witness of the traceability of the measurement results in C.L. On the other side, the IPH shunt and the HBM digitizers are the main error component sources of the Current Reference Measuring System belonging to C.L.-ICMET. By two different checking undertakings and by the calibration certificates, we conclude that the errors introduced by the digitizers are also very small. The results here-above showed that the uncertainties associated to the scale factor of the Reference Measuring System are much smaller than the “CMC” having been stated for it under accredited regime.
本文概述了2012年3月在ICMET克拉约瓦进行的对两个电流分流器的比较测试,以及这种比较对ICMET校准实验室“C.L.”进行校准的可追溯性的演示的后果-大电流”等有关测量不确定度的问题。经过比较程序的两个电流分流器是欧洲和非洲的STL参考标准分流器和由IPH柏林制造的同轴分流器200kA型,代表C.L. - ICMET标准分流器。这两种分流器是同一厂家生产的,具有相似的技术特点,从而提供了比较的能力。比较结果证明,与iphi - icmet分流器的比例因子有关的误差很小(与为C.L.规定的CMC数量级相比),与其所有校准证书的结果一致,因此这是C.L.测量结果可追溯性的证明。IPH分流器和HBM数字化仪是cl - icmet电流参考测量系统的主要误差源。通过两次不同的检查和校准证书,我们得出结论,数字化仪引入的误差也很小。以上的结果显示,与参考测量系统的比例因子有关的不确定度远小于在认可制度下为其规定的“CMC”。
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引用次数: 0
Boost interleaved PFC versus bridgeless boost interleaved PFC converter performance/efficiency analysis 升压交错PFC与无桥升压交错PFC转换器性能/效率分析
Pub Date : 2014-12-04 DOI: 10.1109/ICATE.2014.6972651
Mihaela-Codruta Ancuti, M. Svoboda, S. Musuroi, A. Hedeş, N. Olarescu, Martin Wienmann
In the last two decades, a great part of research in the power electronics area has been involved in finding methods of improving the input current waveform while simultaneously avoiding phase displacement. The aim of the paper consists of selecting two of the most relevant single phase power factor correction (PFC) topologies currently existing for the power range of 1.5 kW up to 4 kW and to analyse and evaluate them. The investigated topologies are the boost interleaved PFC converter and the bridgeless boost interleaved PFC converter. Performances of the two studied topologies are simulated in Matlab/Simulink. Loss analysis and efficiency evaluation are also provided. The simulation results verify that the bridgeless boost interleaved PFC converter demonstrates a slightly higher efficiency than the interleaved boost PFC converter topology.
在过去的二十年中,电力电子领域的大部分研究都涉及到寻找改善输入电流波形同时避免相位位移的方法。本文的目的包括选择目前存在的两种最相关的单相功率因数校正(PFC)拓扑,用于1.5 kW至4 kW的功率范围,并对它们进行分析和评估。所研究的拓扑是升压交错PFC变换器和无桥升压交错PFC变换器。在Matlab/Simulink中对两种拓扑结构的性能进行了仿真。还提供了损耗分析和效率评价。仿真结果验证了无桥升压交错PFC变换器的效率略高于交错升压PFC变换器拓扑。
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引用次数: 18
The technical progress and its reflection in the construction of the medium voltage metal enclosed switchgear for secondary distribution of electricity 二次配电中压金属封闭开关柜的技术进步及其在建设中的反映
Pub Date : 2014-12-04 DOI: 10.1109/ICATE.2014.6972667
I. Pătru, M. Duta, S. Popescu, S. Vlase, V. Voicu, D. Iovan, A. Benea, C. Salceanu
This article presents the results of the research carried out for modernization of the medium voltage metal enclosed switchgear for secondary distribution of electricity. The metal enclosed switchgear upgrading is based on the patent proposal no. A/00230/14.03.2013 for this purpose and aims at increasing the reliability in the supply of electricity. The modernization consists in eliminating the existing deficiencies of secondary distribution metal enclosed switchgear by replacing the air or SF6 switching devices with vacuum switching devices, by merging the separation and interruption functions (of nominal currents, excess currents or fault currents) in the same multipurpose vacuum switching device, supplemented by the use of another vacuum switching device, for the earthing function. In this way it will be possible for the remote controls to be assigned to all the functions of the metal enclosed switchgear [separationinterruption (simultaneously) or earthing] with vacuum switching devices, thus providing a mechanical endurance with at least a size grade greater than the existing ones. Due to the possibility for remote control of all the functions of the metal enclosed switchgear, the maintenance costs for the entire lifespan will be lower, and the duration of network reconfiguration will be significantly reduced as opposed to current duration, ensuring a higher performance of the supply of electricity to the customers. By using silicone and composite insulation for the general bars of the metal enclosed switchgear and the vacuum switching devices of its equipment, with a leakage path to the mass higher than the existing ones, it will be possible for the metal enclosed switchgears, which have their cable outgoing insulated with sealed potheads to operate in severe environmental conditions, and to be tested and certified according to CEI/ST62271-304/2008.
本文介绍了二次配电用中压金属封闭开关柜现代化改造的研究成果。金属封闭开关柜升级是基于专利提案号:A/00230/14.03.2013为此目的,旨在提高电力供应的可靠性。现代化包括通过用真空开关装置代替空气或SF6开关装置,通过将分离和中断功能(标称电流,过量电流或故障电流)合并在同一个多用途真空开关装置中,并使用另一个真空开关装置补充接地功能,消除二次配电金属封闭开关设备现有的缺陷。这样,就有可能将遥控器分配给真空开关装置的金属封闭开关设备的所有功能[分离中断(同时)或接地],从而提供至少比现有设备大一个尺寸等级的机械耐用性。由于可以远程控制金属封闭开关柜的所有功能,因此整个使用寿命的维护成本将降低,并且与目前的持续时间相比,网络重新配置的持续时间将大大减少,从而确保向客户提供更高的电力供应性能。金属封闭开关柜及其设备的真空开关装置的总棒采用硅酮和复合绝缘材料,使其泄漏到质量的路径比现有的高,可以使金属封闭开关柜在恶劣的环境条件下运行,并根据CEI/ST62271-304/2008进行测试和认证。
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引用次数: 0
Split-phase multi-inverter system controlled by specialized scheme of synchronous PWM 分相多逆变系统采用同步PWM专用方案控制
Pub Date : 2014-12-04 DOI: 10.1109/ICATE.2014.6972646
V. Oleschuk, V. Ermuratskii, V. Berzan
Split-phase (dual three-phase or six-phase) drive systems are an interesting alternative of existing standard solutions. This paper describes operation of four-inverter-based six-phase system with special scheme of control and modulation, providing mutual compensation of common-mode voltages of dual inverters and continuous synchronization of the phase voltages. MATLAB-based simulations illustrate behavior of this multi-inverter system with symmetrical voltage waveforms.
分相(双三相或六相)驱动系统是现有标准解决方案的有趣替代方案。本文介绍了一种基于四逆变器的六相系统,采用特殊的控制和调制方案,实现双逆变器共模电压的相互补偿和相位电压的连续同步。基于matlab的仿真演示了具有对称电压波形的多逆变器系统的性能。
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引用次数: 2
The designing of a positioning system for PV modules used to supply a stand alone consumer 光伏组件定位系统的设计,供独立用户使用
Pub Date : 2014-12-04 DOI: 10.1109/ICATE.2014.6972617
P. Nicolae, D. Stănescu, Remi-Saray Raharianivo, Marian Otal
The paper is related to aspects concerning the realization of a positioning system for PV modules. One describes the design of the main parts of the system. The PV modules are used to supply a stand alone consumer. The system's efficiency is improved if it is properly orientated with respect to the highest intensity of the light. The proposed positioning system is an automated two axes system which orientates the PV modules from East to West and from North to South respectively. The drive system used to orientate the PV modules contains two H-bridges and two DC motors. Finally, the testing of the entire positioning system based on a dedicated software is presented.
本文涉及光伏组件定位系统的实现。一是介绍了系统主要部分的设计。光伏组件用于提供独立的用户。系统的效率提高,如果它是适当的取向相对于光的最高强度。拟议的定位系统是一个自动化的两轴系统,分别从东到西和从北到南定位光伏模块。用于定位光伏组件的驱动系统包含两个h桥和两个直流电机。最后,基于专用软件对整个定位系统进行了测试。
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引用次数: 1
Virtual instrument for study dynamic regimes of variable reluctance synchronous motors 研究变磁阻同步电动机动态特性的虚拟仪器
Pub Date : 2014-12-04 DOI: 10.1109/ICATE.2014.6972640
G. Subţirelu, M. Dobriceanu, M. Enache, Niculae Boteanu
In this paper an modern solution to measure and analyse selected parameters of variable reluctance synchronous motor is presented. An virtual instrument with multiple options for selecting the analyzed parameters is described. The values of motor measurement voltages, currents and speed are read from a specified folder. With present virtual instrument it can be see the motor currents, voltages and speed waveforms and from the acquired data and recorded a set of parameters are computed. Boolean selector determine which signals are selected from the original seven signals (three current, three voltages and speed). It can be extract portions of data from the input signals. The extract portion is defined by the begin of offset (point of start) and the length (end the extraction). This instrument allow timing and transition measurements such as: pulse duration (pulse width), duty cicle (duty factor), preshoot (%), overshoot (%), slew rate. Also this virtual instrument allow to find the first highest (maximum) and the lowest (minimum) point in a set of values in signals of currents, voltages or motor' speed and find the time of the maximum and minimum values so determined. Knowing these values can be determined the range from the lowest point to the highest point in a set of motor's start current and voltage.
本文提出了一种测量和分析变磁阻同步电动机选定参数的现代解决方案。描述了一种具有多种选择分析参数的虚拟仪器。从指定的文件夹中读取电机测量电压、电流和速度的值。利用现有的虚拟仪器可以看到电机的电流、电压和速度波形,并根据采集的数据和记录的数据计算出一组参数。布尔选择器决定从原来的七个信号(三个电流,三个电压和速度)中选择哪些信号。它可以从输入信号中提取部分数据。提取部分由偏移量的起始点(开始点)和长度(提取结束点)定义。该仪器允许定时和过渡测量,如:脉冲持续时间(脉冲宽度),占空比(占空系数),预调(%),超调(%),摆幅率。此外,该虚拟仪器允许在电流,电压或电机速度信号的一组值中找到第一个最高(最大值)和最低(最小值)点,并找到如此确定的最大值和最小值的时间。知道这些值可以确定从最低点到最高点的范围内的一组电机的启动电流和电压。
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引用次数: 3
The improvement of power quality in a mono-phase system through a single-phase active filter using MATLAB/simulink 利用MATLAB/simulink实现了单相有源滤波器对单相系统电能质量的改善
Pub Date : 2014-12-04 DOI: 10.1109/ICATE.2014.6972618
M. Nicolae, Ionuţ-Daniel Smărăndescu, Alexandru Tudorascu
The paper deals with the single-phase active filtering used for reducing the harmonic level and electromagnetic interference and to get compliance with the power quality standards. The active filtering in case of a single-phase rectifier is based on a single-phase active filter and a complete current control system that uses pulse-width modulation (PWM) techniques. The power quality and the existing standards are discussed, including the disturbances in a power system for a single-phase rectifier. The harmonics, how they are generated, and what problems they may introduce in the power system, are presented. Some simulations concerning the behavior of a single-phase active filter in different situations are analyzed. The simulations performed in MATLAB/Simulink reveal a good agreement with the existing standards and validate the theoretical considerations.
本文讨论了单相有源滤波用于降低谐波电平和电磁干扰,使其符合电能质量标准。在单相整流器的情况下,有源滤波是基于一个单相有源滤波器和一个完整的电流控制系统,使用脉宽调制(PWM)技术。讨论了电能质量和现有标准,包括单相整流器在电力系统中的扰动。介绍了谐波,它们是如何产生的,以及它们可能在电力系统中引入的问题。对单相有源滤波器在不同情况下的性能进行了仿真分析。在MATLAB/Simulink中进行了仿真,结果表明该方法与现有标准吻合较好,验证了理论考虑的正确性。
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引用次数: 1
Performances of the anti-perturbation filters for current distortion factor reduction 降低电流失真因子的抗摄动滤波器性能
Pub Date : 2014-12-04 DOI: 10.1109/ICATE.2014.6972657
M. Buzdugan, H. Balan
The paper presents a few aspects of power quality at the supply port of power electronic converters. The main point is that the lack of power quality, especially in the case of a large harmonic content, leads to conducted electromagnetic interference. The approach focuses mainly on the methods of assessing conduced electromagnetic interference. At the same time the methods of testing in laboratory conditions of the insertion loss of EMI filters are depicted. Experimental results of mitigating conducted electromagnetic interference using EMI filters along with their efficiency are also presented.
本文介绍了电力电子变换器供电端电能质量的几个方面。主要的一点是,电能质量差,特别是在谐波含量大的情况下,会导致传导电磁干扰。该方法主要侧重于评估传导电磁干扰的方法。同时介绍了在实验室条件下测试电磁干扰滤波器插入损耗的方法。本文还介绍了利用EMI滤波器减轻传导电磁干扰的实验结果及其效率。
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引用次数: 0
期刊
2014 International Conference on Applied and Theoretical Electricity (ICATE)
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