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2017 IEEE International WIE Conference on Electrical and Computer Engineering (WIECON-ECE)最新文献

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Sensorless Speed Estimation of PM Synchronous Motor Drive using MRAS 基于MRAS的永磁同步电机无传感器转速估计
Pub Date : 2017-12-01 DOI: 10.1109/WIECON-ECE.2017.8468912
Shweta Singh, A. N. Tiwari, S.N. Singh
The efficient operation of high performing Variable Speed Drives (VSD) requires rotor angle information. Sensorless methods have become very fascinating for industrial users, as these inhibit several advantages over sensor based methods. In this paper, a Model Reference Adaptive System (MRAS) has been implemented for speed estimation of Permanent Magnet Synchronous Motor (PMSM) Drive and the performance has been analyzed for various speed and load torque values. The test results demonstrate that the MRAS based PMSM has a good speed tracking capability, and accuracy of drive.
高性能变速驱动器(VSD)的高效运行需要转子角度信息。对于工业用户来说,无传感器方法已经变得非常吸引人,因为这些方法抑制了基于传感器的方法的几个优点。提出了一种基于模型参考自适应系统的永磁同步电机转速估计方法,并对其在不同转速和负载转矩值下的性能进行了分析。实验结果表明,基于MRAS的永磁同步电机具有良好的速度跟踪能力和驱动精度。
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引用次数: 5
Performance Analysis Comparison of Ultra-Wideband Bandpass Filter 超宽带带通滤波器性能分析比较
Pub Date : 2017-12-01 DOI: 10.1109/WIECON-ECE.2017.8468878
Dubey Suhmita Umeshkumar, Manish Kumar
The paper reflects the comparison of different UWB BPF designs. The parameters such as insertion loss, return loss, size of filter designs, fractional bandwidth are studied. Different techniques like coupling of microstrip lines, addition of passive devices on silicon, combination of single multimode resonator (MMR) and variable section impedance, use of dielectric resonators and dual mode ring resonator, combination of band pass characteristics with negative permittivity material, embedded structure of HPF and LPF, interdigital coupling of ring resonators and open circuit stubs are reviewed and analyzed. The paper includes a proposed model with reduced size which is designed using fractal method.
本文对不同的超宽带BPF设计进行了比较。研究了插入损耗、回波损耗、滤波器设计尺寸、分数带宽等参数。对微带线耦合、在硅上添加无源器件、单多模谐振器与变截面阻抗的组合、介电谐振器和双模环形谐振器的使用、带通特性与负介电常数材料的组合、HPF和LPF的嵌入式结构、环形谐振器和开路桩的数字间耦合等不同技术进行了综述和分析。本文提出了一种采用分形方法设计的缩小尺寸模型。
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引用次数: 0
Optimal V2G and G2V Operation of Electric Vehicles using Binary Hybrid Particle Swarm Optimization and Gravitational Search Algorithm 基于二元混合粒子群优化和引力搜索算法的电动汽车V2G和G2V优化
Pub Date : 2017-12-01 DOI: 10.1109/WIECON-ECE.2017.8468892
Vishu Gupta, S. Reddy K, L. Panwar, R. Kumar, B. Panigrahi
The smart grid paradigm enables improved participation of customers in operational aspects of power system. The optimal charge-discharge operation of electric vehicles (EV) is one of the means for improvising such customer participation. Therefore, this paper presents a hybrid meta heuristic approach using particle swarm optimization and gravitational search algorithm for optimal charge-discharge event management of EVs in smart grid. The same is carried out in conjunction with the unit commitment procedure of power system operation. The UC problem belongs to the class of binary optimization problems where the search space is constricted to binary digits. For this, the real valued optimization variables and process is mapped to binary version using tangent hyperbolic transformation. The effectiveness of BHPSO-GSA is examined through extensive numerical experiments on various scenarios. The simulation results are presented, discussed and compared to other existing approaches to demonstrate the superiority of proposed approach in solving UC problem with and without EV in smart grid.
智能电网模式使客户能够更好地参与电力系统的运营方面。电动汽车的最优充放电操作是实现这种用户参与的一种手段。为此,本文提出了一种基于粒子群算法和引力搜索算法的混合元启发式方法,用于智能电网电动汽车的最优充放电事件管理。与电力系统运行的机组调试程序同时进行。UC问题属于二进制优化问题,其中搜索空间被限制为二进制数。为此,利用正切双曲变换将实值优化变量和过程映射到二进制版本。BHPSO-GSA的有效性通过各种场景的大量数值实验进行了检验。给出了仿真结果,并与其他现有方法进行了讨论和比较,以证明所提出的方法在解决智能电网中有和没有电动汽车的UC问题方面的优越性。
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引用次数: 3
Study of Frequency Response with Centralized vs. Distributed Placement of Battery Energy Storage Systems in Renewable Integrated Microgrid 可再生集成微电网中电池储能系统集中与分布式配置的频率响应研究
Pub Date : 2017-12-01 DOI: 10.1109/WIECON-ECE.2017.8468928
Shaila Arif, T. Aziz
Due to a number of benefits, share of renewable energy based generation is increasing rapidly. However, intermittent behavior of renewable energy is challenging to keep the frequency stable; specially in isolated microgrids. Deploying battery energy storage system (BESS) in microgrid could be helpful to lessen such frequency excursion problems. This paper investigates the effect of various placement strategies of BESS in an isolated renewable integrated microgrid. BESS has been placed in centralized as well as in distributed manner throughout the test microgrid. Results show that, in comparison to centralized placement, distributed placement of BESS offers better frequency response with events such as large load connection.
由于许多好处,可再生能源发电的份额正在迅速增加。然而,可再生能源的间歇性行为对保持频率稳定具有挑战性;特别是在孤立的微电网中。在微电网中部署电池储能系统(BESS)有助于减少这种频率偏移问题。本文研究了BESS在一个孤立的可再生集成微电网中不同放置策略的效果。在整个测试微电网中,BESS以集中式和分布式方式放置。结果表明,与集中式布局相比,分布式布局的BESS在大负荷连接等事件下提供了更好的频率响应。
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引用次数: 5
Localisation of Partial Discharge source through Delay calculation using UHF sensors 超高频传感器延时计算局部放电源定位
Pub Date : 2017-12-01 DOI: 10.1109/WIECON-ECE.2017.8468897
B. Anitha, D. Mishra, C. Koley
Partial Discharges (PDs) are reported as the main reason for failure of High Voltage (HV) power apparatus leading to sudden failure of entire electrical system, such irreversible discharges takes place in the area of inhomogenities due to uneven charge distribution on dielectric medium. Therefore it becomes essential to monitor the PD activities in HV power apparatus before it completely damage the whole system. Many techniques are already proposed and applied to identify the PD activity along with its severity and localization in HV power apparatus with their advantages and disadvantages. One of the useful methods is radio frequency (RF) method using ultra high frequency (UHF) sensor. In recent trend of research it is challenging to find the location of different PD sources in a complex network system. In this paper the authors explain and experimentally prove the localization of two PD sources using UHF sensors invasively with more accuracy. Delay calculation of the recorded signal pulses using multiple sensors is the idea behind the study.
局部放电是高压电力设备故障导致整个电力系统突然失效的主要原因,这种不可逆放电是由于介质上电荷分布不均匀而发生在非均匀区。因此,在高压电力设备的局部放电活动完全破坏整个系统之前,对其进行监测变得十分必要。目前已经提出并应用了许多方法来识别高压电力设备中局部局部放电活动及其严重程度和局部局部,各有优缺点。其中一种有用的方法是使用超高频(UHF)传感器的射频(RF)方法。在最近的研究趋势中,如何在复杂的网络系统中找到不同PD源的位置是一个挑战。本文解释并实验证明了利用超高频传感器对两种PD源进行有创定位,具有较高的精度。使用多个传感器计算记录的信号脉冲的延迟是研究背后的思想。
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引用次数: 3
Closed-Loop Control Analysis of Interleaved Non-isolated Bidirectional DC-DC Converter 交错非隔离双向DC-DC变换器的闭环控制分析
Pub Date : 2017-12-01 DOI: 10.1109/WIECON-ECE.2017.8468882
Priyanka Jangir, Nidhi, R. Kumar
This paper presents modelling and control study of a bidirectional non-isolated interleaved DC- DC converter with high voltage gain. The nonisolated converter under study combines the advantages of switched capacitors and coupled inductors. Series connected switched capacitors with inductor cells helped to achieve high conversion ratio and reduced voltage stress on power components. An average current mode control is used to control output current and input current of non-isolated bidirectional dc-dc converter at both stages boost converter as well as buck converter. A state space modeling and an average current mode control analysis at the boost stage are given in details in this paper. Simulation results are based on some experimental data of non-isolated bidirectional dc-dc converter of high power application.
本文介绍了一种具有高电压增益的双向非隔离交错DC- DC变换器的建模和控制研究。所研究的非隔离变换器结合了开关电容和耦合电感的优点。带有电感单元的串联开关电容器有助于实现高转换率和降低功率元件的电压应力。采用平均电流模式控制非隔离双向dc-dc变换器在升压变换器和降压变换器两级的输出电流和输入电流。本文详细介绍了升压阶段的状态空间建模和平均电流模式控制分析。仿真结果基于大功率非隔离双向dc-dc变换器的部分实验数据。
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引用次数: 2
Selective Suppression of IRNSS S-band Signals for Specific Applications IRNSS s波段信号在特定应用中的选择性抑制
Pub Date : 2017-12-01 DOI: 10.1109/WIECON-ECE.2017.8468869
Uttama Ghosh, A. D. Sarma, M. Q. Javeed, N. Rao
The Indian Regional Navigational Satellite System (IRNSS) has become operational recently. IRNSS S-band signals are more vulnerable to Radio Frequency Interference (RFI) as the S-band spectrum is congested with several other signals including the signals operating in the license free band. It operates in L5 and Sl frequencies. The performance of IRNSS receivers meant for non-precision applications can be enhanced by suppressing Sl signals. In view of this, an aluminium reflector is designed and developed to selectively suppress Sl signals. The results are encouraging.
印度区域卫星导航系统(IRNSS)最近开始运作。IRNSS s波段信号更容易受到射频干扰(RFI),因为s波段频谱与其他几个信号(包括在免许可证频带中运行的信号)拥挤。它工作在L5和Sl频率。用于非精密应用的IRNSS接收机的性能可以通过抑制Sl信号来提高。鉴于此,设计并研制了一种铝反射器来选择性地抑制Sl信号。结果令人鼓舞。
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引用次数: 4
Voice Based Eye Vision Tester for Underprivileged Community 为贫困社区设计的基于语音的视力测试仪
Pub Date : 2017-12-01 DOI: 10.1109/WIECON-ECE.2017.8468921
T. Shameem, Mazharul Islam, Sayeed Shafayet Chowdhury, C. Shahnaz, S. Fattah
Eye vision testing has become a common healthcare issue in this modern era. However, such checkup from an expert can be time consuming and tedious for people especially in the developing countries with scarce healthcare facilities. So a software based eye-vision testing system is presented here which is inexpensive and mobile. It can be used as an initial screening tool for those with eyesight problems. A speech recognition based program is proposed here, where a predetermined distance between the display and the user’s eye is initialized. Then letters are displayed sequentially in a random order and descending size until a mismatch occurs between the utterance of the user and actual letter displayed. At this stage, the size of the letter is taken as eye limit and a pre-trained mathematical model is used to provide the eye lens power as output for adjustment. Experimental results show satisfactory accuracy. Such a solution could have significant impact to the lives of people from various underprivileged communities with by providing them a useful and easy means of regular preliminary screening of their eyesight.
在这个现代时代,视力测试已经成为一个常见的医疗保健问题。然而,这种由专家进行的检查对人们来说既耗时又乏味,尤其是在医疗设施匮乏的发展中国家。为此,本文提出了一种基于软件的低成本、可移动的视觉检测系统。它可以作为有视力问题的人的初步筛查工具。本文提出了一种基于语音识别的程序,其中初始化显示器与用户眼睛之间的预定距离。然后字母按随机顺序和降序依次显示,直到用户的发音和实际显示的字母不匹配。在这个阶段,以字母的大小作为眼睛的极限,使用预先训练好的数学模型提供眼睛的晶状体功率作为输出进行调节。实验结果表明,该方法具有较好的精度。这种解决办法可以对来自各种贫困社区的人们的生活产生重大影响,为他们提供一种有用和简单的定期初步检查视力的方法。
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引用次数: 1
Structural Parameter Impact on Dual Gate Organic Thin Film Transistors 结构参数对双栅有机薄膜晶体管的影响
Pub Date : 2017-12-01 DOI: 10.1109/WIECON-ECE.2017.8468908
N. Mishra, B. Kumar
This paper presents the impact of organic semiconductor (OSC) thickness variation from 200nm to 100nm using atlas 2-D device simulator. Its effect on various parameters such as mobility, threshold voltage and subs threshold slope, drain current is analyzed. It is concluded from the results that as the thickness of OSC is varied the performance of dual gate organic thin film transistors (OTFTs) is reduced. It is because of the accumulation of charges in the semiconductor-oxide interface is decreased. Subsequently, effect of channel length is investigated and found that while the channel length is reduced; the resistance of the channel is increased which reduces the drain current. Effect of these changes on the morphology of the device is deeply analyzed. Thus, it is attained from the analysis that increase in the threshold voltage is a negative aspect of the device. Afterwards, to analyze the effect of channel length (L) on performance of device, the L is varied in both side, upper and lower from 25μm to 50μm & 25μm to 5μm with a step size of 10. The significant change in current is observed, whereas very slight change is explored in other parameters, therefore, lower dimension device can be fabricated for further compact circuit application.
本文利用atlas二维器件模拟器研究了有机半导体(OSC)厚度在200nm到100nm范围内变化的影响。分析了其对迁移率、阈值电压和子阈值斜率、漏极电流等参数的影响。结果表明,随着盐层厚度的变化,双栅有机薄膜晶体管的性能会降低。这是因为半导体-氧化物界面中电荷的积累减少了。随后,研究了通道长度的影响,发现当通道长度减小时;通道的电阻增加,从而减少漏极电流。深入分析了这些变化对器件形貌的影响。因此,从分析中可以得出,阈值电压的增加是器件的负面方面。随后,为了分析通道长度(L)对器件性能的影响,在25μm到50μm和25μm到5μm的范围内,将通道长度上下变化,步长为10。观察到电流的显著变化,而其他参数的变化很小,因此,可以制作低维器件以进一步紧凑电路应用。
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引用次数: 0
Binary Bat Search Algorithm for Unit Commitment Problem in Power system 电力系统机组投运问题的二进制蝙蝠搜索算法
Pub Date : 2017-12-01 DOI: 10.1109/WIECON-ECE.2017.8468909
Nidhi, Srikanth Reddy, R. Kumar, B. K. Panigrahi
The unit commitment operation in power systems is a complex, non-linear, constrained optimization problem. The commitment and de-commitment decision presents a binary problem which needs discrete/binary optimization approaches. This paper presents a binary bat search algorithm (BBSA) to solve unit commitment (UC) problem. The bat search algorithm belongs to a meta heuristic class of optimization approaches inspired by natural echolocation behavior of bats. In order to solve binary UC problem, the real valued bat search process is mapped to binary search space using sigmoidal transformation function. The BBSA is then applied to test system with 10 thermal units. The effectiveness of the BBSA is verified against system dimension using test systems upto 100 units. Extensive numerical experiments are performed to test the effectiveness of BBSA and statistical analysis of simulation results are presented. The simulation results are presented, discussed and compared to various existing classical and heuristic approaches. The same demonstrate the superior performance of BBSA approach in solving UC problem.
电力系统机组投入运行是一个复杂的非线性约束优化问题。承诺和取消承诺决策是一个二元问题,需要采用离散/二元优化方法。提出了一种解决机组承诺问题的二进制蝙蝠搜索算法(BBSA)。蝙蝠搜索算法是一类受蝙蝠自然回声定位行为启发的元启发式优化方法。为了解决二进制UC问题,利用s型变换函数将实值蝙蝠搜索过程映射到二进制搜索空间。然后将BBSA应用于具有10个热单元的测试系统。使用多达100个单元的测试系统来验证BBSA的有效性。通过大量的数值实验验证了该方法的有效性,并对仿真结果进行了统计分析。给出了仿真结果,并与现有的各种经典方法和启发式方法进行了讨论和比较。同样证明了BBSA方法在解决UC问题上的优越性能。
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引用次数: 5
期刊
2017 IEEE International WIE Conference on Electrical and Computer Engineering (WIECON-ECE)
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