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2018 Fourth International Conference on Advances in Electrical, Electronics, Information, Communication and Bio-Informatics (AEEICB)最新文献

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Droop Based Voltage and Frequency Controller for an Islanded AC Micro-Grid 孤岛交流微电网基于下垂的电压频率控制器
K. Perera, L. K. I. Piyawadani, B. H. S. Suranjaya, P. Thennakoon, K.T.M.U. Hemapala
Micro-grids compared to conventional grids bring its own advantages and disadvantages. Micro-grids create room to tailor the quality of power delivered to the end user and also encourages the utilization of creating a favorable environment for energy efficiency and small scale renewable investments. But due to the very low inertia present in the micro-grids, the voltage and frequency can change rapidly which makes the controlling function a bit challenging. Therefore, the conventional droop method that is used to dispatch the demand at rated voltage and rated frequency in conventional grids, is challenging to be used in micro-grids. This paper includes the attempt to execute the controlling function in a newer and better droop control method. The project was initiated to implement with DC power sources as the Distributed Energy Sourcesare based on two inverters. Depending on the power requirement, the droop setting is changed to gain the governor action in this system. The controlling action of the newer droop method is compared and analyzed through MATLAB SIMULINK simulation and with the conventional droop control mechanism.
微电网与传统电网相比有其自身的优缺点。微电网为调整输送给最终用户的电力质量创造了空间,并鼓励为能源效率和小规模可再生能源投资创造有利的环境。但由于微电网的惯性很小,电压和频率变化很快,使得控制功能具有一定的挑战性。因此,传统电网中以额定电压和额定频率调度需求的传统下垂方法在微电网中的应用具有挑战性。本文尝试用一种更新、更好的下垂控制方法来执行控制功能。本项目以直流电源为基础,以两台逆变器为基础实现分布式能源。根据功率需求,下垂设置被改变以获得该系统中的调速器动作。通过MATLAB SIMULINK仿真,对比分析了新悬垂方法与传统悬垂控制机构的控制作用。
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引用次数: 0
Boost Inverter Fed Three Phase Induction Motor for Off Grid PV Based Water Pumping System 离网光伏抽水系统的升压逆变三相感应电动机
Manish Kumar Barwar, Prabhat Ranjan Tripathi, P. Thakura
Present work proposes a boost inverter fed induction motor for standalone water pumping systems suitable for off-grid PV installations. In this work focus has been given on drivability of induction motor for minimum available DC voltage input given to Boost inverter system for single stage three phase DC to AC conversion. For the proposed inverter the operating frequency is 50 Hz. Pulsewidth modulation (PWM) is discussed in this presented paper for the control strategy. Proposed model has been simulated for a switching frequency of 20KHz by using PWM technique. The simulation has been done taking the calculated parameters of a 1hp, 3-phase, 415 V star connected Induction Motor.
目前的工作提出了一种适用于离网光伏装置的独立水泵系统的升压逆变器馈电感应电动机。在这项工作中,重点研究了感应电机的可驱动性,为Boost逆变系统提供了最小可用直流电压输入,用于单级三相直流到交流转换。对于建议的逆变器,工作频率为50hz。本文讨论了脉冲宽度调制(PWM)的控制策略。利用PWM技术对该模型进行了开关频率为20KHz的仿真。以一台1hp,三相,415v星形连接异步电动机的计算参数进行了仿真。
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引用次数: 4
Retinal Vessel Segmentation Using Morphological Top Hat Approach On Diabetic Retinopathy Images 形态学顶帽法在糖尿病视网膜病变图像中的视网膜血管分割
S. Aswini, A. Suresh, S. Priya, B. V. Santhosh Krishna
In the diagnosis, screening, early detection and treatment of diseases like glaucoma, diabetic retinopathy (DR), hypertension, retinopathy of prematurity (ROP), age related macular degeneration (AMD) and arteriosclerosis retinal blood vessels play a major role. In the working age group of people Diabetic Retinopathy (DR) is very deadly one since it has a threat on sight, since it may lead to blindness. Retinal vessel segmentation is the fundamental step in detecting various pathologies. Hence it is very important for retinal vasculature segmentation for helping the clinicians for screening and treating various pathologies. A novel method is proposed in this paper for extracting the retinal blood vessels. Blood vessel enhancement and suppression of background information, smoothing operation is done on the retinal image using mathematical morphology and top hat transform is used. Later segmentation is carried out using two fold hysteresis thresholding algorithm. The proposed approach is evaluated on Diabetic Retinopathy images in HAGIS and HRF dataset. Experimental results show that our method is efficient as the average accuracy achieved is 95.12% and 94.37% with HAGIS and HRF dataset respectively.
在青光眼、糖尿病视网膜病变(DR)、高血压、早产儿视网膜病变(ROP)、年龄相关性黄斑变性(AMD)和视网膜血管动脉硬化等疾病的诊断、筛查、早期发现和治疗中起着重要作用。在工作年龄人群中,糖尿病视网膜病变(DR)是一种非常致命的疾病,因为它对视力有威胁,因为它可能导致失明。视网膜血管分割是检测各种病变的基本步骤。因此,视网膜血管分割对临床医生筛查和治疗各种病变具有重要意义。提出了一种提取视网膜血管的新方法。利用数学形态学对视网膜图像进行平滑处理,并利用顶帽变换对背景信息进行增强和抑制。后续分割采用二次迟滞阈值分割算法。该方法在HAGIS和HRF数据集中的糖尿病视网膜病变图像上进行了评估。实验结果表明,该方法在HAGIS和HRF数据集上的平均准确率分别为95.12%和94.37%。
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引用次数: 9
A Precise on Wearable ECG Electrodes for Detection Of Heart Rate and Arrthymia Classification 一种用于心率检测和心律失常分类的精密可穿戴ECG电极
Murugan K. H Shakthi, B. Sabiya, B. Saranya, S. Vinodhini
Many countries are facing burdens on their health care systems due to ageing populations. In this paper, urge the monitoring system of the ECG signal in the convenient way. With respect to heart rate monitoring wearable devices have principally used pulse oximeter sensors, wet silver/silver chloride (Ag/silver chloride) electrodes, optical techniques by shining light through the skin. By inducting this we can monitor the heart rate of the patients using PPG signals. The main aim of this work is to bring out the most convenient system of monitoring ECG signals which is an inventive additional device that can permit hospitals to receive the signals in an advanced sense of confidence and self reliance.
由于人口老龄化,许多国家的卫生保健系统面临负担。本文对心电信号的监测系统进行了较为方便的设计。关于心率监测可穿戴设备主要使用脉搏血氧计传感器,湿银/氯化银(Ag/氯化银)电极,通过将光照射穿过皮肤的光学技术。通过诱导,我们可以用PPG信号来监测病人的心率。这项工作的主要目的是提出最方便的监测心电图信号的系统,这是一种创造性的附加设备,可以让医院以一种先进的信心和自力更生的方式接收信号。
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引用次数: 3
Simulation of Solar Bag Using DC-DC Boost Converter 基于DC-DC升压变换器的太阳能袋仿真
K. Deepikavalli, R. Puviarasi
The backpack would store vitality from sun oriented cells put on its outside, which could then be utilized to charge individuals’ electronic gadgets, for example, a mobile phone or iPod. Charging your contraptions every so often on account of depleted battery particularly when you are not at home or office is an issue looked by every one of us. To tackle this issue, Charge your contraptions by making your own particular sunlight based battery charger, at that point join it to your most loved tote or rucksack. Front piece of sack is secured with sunlight based board, which will constantly create control through light while we travel. Inside structure comprise of rechargeable battery for a use like charging cell phone or tab, tablet. You can all the while charge your battery under the sun and with no weight of depleting battery.
这种背包可以储存安装在背包外面的太阳能电池的能量,然后可以用来给个人的电子产品充电,比如手机或iPod。每隔一段时间,尤其是当你不在家里或办公室的时候,因为电池电量不足而给你的设备充电,这是我们每个人都关心的问题。为了解决这个问题,你可以制作自己的太阳能电池充电器来给你的装置充电,然后把它放在你最喜欢的手提包或背包里。前面一块麻袋是固定的阳光基板,这将不断创造控制通过光,而我们的旅行。内部结构包括可充电电池,用于为手机或平板电脑充电。你可以一直在阳光下给你的电池充电,没有电池耗尽的重量。
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引用次数: 0
Design of a Single Layer Dual Band Reflectarray Antenna 单层双频反射天线的设计
P. Balaji, G. Mohammed, Saranya, Gayathri, Shruti Penumatsa, Radhika Prasad
This paper presents the design of a small sized, single layer dual band reflectarray antenna constructed using a novel element comprising of a split ring and a crossed dipole. The mathematical analysis on the phase compensation is performed and the geometrical parameters are tuned to obtain the desired phase compensation in two closely spaced frequency bands such as the C band and the X band. A 9×9 element reflectarray antenna is constructed and its far-field characteristics are studied. The simulation results show a notable enhancement in the antenna gain.
本文介绍了一种小尺寸的单层双波段反射天线的设计,该天线采用了一种由分裂环和交叉偶极子组成的新型元件。对相位补偿进行了数学分析,并对几何参数进行了调整,从而在C波段和X波段两个间隔很近的频段内获得所需的相位补偿。构造了9×9单元反射天线,并对其远场特性进行了研究。仿真结果表明,天线增益显著提高。
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引用次数: 0
State of Charge Based Droop Controlling of Voltage for Islanded DC Microgrid 基于电荷状态的孤岛直流微电网电压下垂控制
S.A.C. Dewapriya, W.A.D. Premachandra, R.L. Konthasinghe, R.M.Y.S. Randunu, P. Thennakoon, K.T.M.U. Hemapala
With the rapid development of distributed generation, microgrid concepts have drawn much attention nowadays. Because of several advantages in efficiency and simplicity such as not having to deal with reactive power, DC microgrid is becoming a new trend in microgrid technology. But DC microgrids have an issue when it comes to voltage controlling. A good controlling method is droop controlling although there are other methods. With the decentralized droop controlling method, there are several ways of voltage controlling but they have an issue of load sharing. Hence the sources can be overloaded sometimes. A method of current sharing according to the SoC level to reduce the issue is proposed theoretically in this paper with simulations.
随着分布式发电的迅速发展,微电网的概念受到了广泛的关注。由于无需处理无功功率等优点,直流微电网正成为微电网技术发展的新趋势。但是直流微电网在电压控制方面存在一个问题。一个好的控制方法是下垂控制,尽管还有其他方法。采用分散式下垂控制方法,有多种电压控制方法,但都存在负荷分担的问题。因此,源有时会过载。本文从理论上提出了一种基于SoC等级的电流共享方法,并进行了仿真。
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引用次数: 0
Water Quality Monitoring System Using IOT 使用物联网的水质监测系统
Nageswara Rao Moparthi, C. Mukesh, P. Vidya Sagar
Water pollution has been an increasing problem over the last few years. Water personal satisfaction may be a standout amongst those primary variables with control wellbeing and the state for sicknesses "around kin what’s more animals. Lakes and waterways would those fundamental wellsprings about drinking water, which impressively rely on upon water personal satisfaction (refers of the physical, chemical, What’s more living aspects about water). The objective of this water quality monitoring system using internet of things is to find the quality of the water i.e. how the pH content varies and sending message to the corresponding authorities. We are going to implement this project at municipal water tanks and drinking water reservoir. For that we are using an Arduino board for finding pH value and GSM module for message technique. We use a led display to have continuous observation on water parameters. Finally the user gets message of pH value of water Further we extend this project by sending the sensor data to cloud for global monitoring of water quality.
在过去的几年里,水污染已经成为一个日益严重的问题。水的个人满意度可能是控制健康和疾病状态的主要变量之一,更重要的是动物。湖泊和水道是饮用水的基本来源,令人印象深刻地依赖于水的个人满足(指水的物理,化学,更重要的是生活方面)。这个使用物联网的水质监测系统的目标是发现水的质量,即pH值含量如何变化,并向相应的当局发送信息。我们将在市政水箱和饮用水水库实施该项目。为此,我们使用Arduino板来查找pH值和GSM模块来进行消息技术。我们使用led显示屏对水的参数进行连续观察。最后用户获得水的pH值信息,进一步扩展该项目,将传感器数据发送到云端,实现全球水质监测。
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引用次数: 43
A Moon-Strip Line Antenna for Multi-Band Applications at 5.44 GHz Resonant Frequency 5.44 GHz谐振频率下多波段应用的月带线天线
Anurag Saxena, V. Singh
A Moon-Strip line textile wearable antenna is designed and simulated in CST Software having better bandwidth and resonating at 5.44 GHz resonant frequency. A textile material Jeans is the substrate of antenna having dielectric constant 1.7 and copper tape is the conductive element. Simulated textile antenna has a substrate size of 50 × 50 mm2 and it is smoothly bent on human body. The bandwidth of proposed antenna is 62.78% from 5.3 GHz frequency to 10.15 GHz which is consider better bandwidth for an antenna.
在CST软件中设计并仿真了一种具有较好带宽、谐振频率为5.44 GHz的月带线纺织可穿戴天线。以纺织材料Jeans为基材,其介电常数为1.7,铜带为导电元件。模拟织物天线的基板尺寸为50 × 50 mm2,在人体上平滑弯曲。该天线在5.3 GHz至10.15 GHz频段的带宽为62.78%,被认为是较好的天线带宽。
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引用次数: 15
High voltage bidirectional cascaded H bridge 21 level multilevel inverter with regenerative braking for locomotive by comparing with (PID & ANFIS) and without controller 通过与无控制器的高压双向级联H桥21电平多电平再生制动机车逆变器(PID & ANFIS)的比较
Ms. J. Suganthi Vinodhini, D. R. Babu
In Locomotives 70% of all railways was fully equipped with the new technologies especially to drive the Induction motor. In VSI the variable frequency of 0 to 160 Hz was at present used in the locomotive with short circuiting problem. In this paper It deals a new technologies for locomotive especially for WAP-7D.Earlier stage in locomotive the converter was designed with GTO and microcontroller based techniques where many drawbacks in that system. In this paper the new proposed 21 level multilevel inverter using regenerative braking was compared with the closed loop using ANFIS and PID. The speed of the three phase squirrel cage induction was controlled and the total harmonic distortion was compared by the OL and CL system in this paper. SPWM technique was carried out to reduce the THD for the proposed system. The simulation was carried out for the OL and CL system using MATLAB simulink.
在机车方面,70%的铁路全部装备了新技术,特别是驱动感应电动机。在VSI中,目前机车的短路问题采用0 ~ 160hz的变频。本文介绍了一种机车新技术,特别是WAP-7D。在机车变换器的早期设计中,采用了基于GTO和单片机的技术,但该系统存在诸多缺陷。本文将采用再生制动的21电平多电平逆变器与采用ANFIS和PID的闭环进行了比较。本文对三相鼠笼式感应的转速进行了控制,并对OL系统和CL系统的总谐波畸变进行了比较。采用SPWM技术降低了系统的THD。利用MATLAB simulink对OL和CL系统进行了仿真。
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引用次数: 0
期刊
2018 Fourth International Conference on Advances in Electrical, Electronics, Information, Communication and Bio-Informatics (AEEICB)
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