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2018 International Conference on Recent Innovations in Electrical, Electronics & Communication Engineering (ICRIEECE)最新文献

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Modelling and Parametric Analysis of Heatsink of an Insulated Gate Bipolar Transistor 绝缘栅双极晶体管散热器的建模与参数分析
S. Kruthiventi, L. K, Meghana chowdary Rayedi, Md. Abid Ali
Even the most efficient electronic devices suffered by the heat generation which causes the increase of temperatures. Similarly, an IGBT is also suffered due to the heat generation. Heat sink is essential for IGBTs, to dissipate the generated heat and to maintain the temperature of the IGBT under safer limits to prevent the failure of IGBT. Hence a better cooling system is essential to dissipate the generated heat from IGBT and to increase the life cycle. In most of the applications, air is used as cooling medium while other medium can be used for higher level of heat generation within IGBT. Commonly heat sinks are provided with fins to improve the heat removal rate. The present work describes the importance of junction temperature of IGBT and also about the role of heat sink. A mathematical model has been developed to predict the junction temperatures in IGBT at various duty cycles (0.1, 0.3 and 0.5). A steady state junction temperature of 145°C is estimated for a 0.5 duty cycle using the present method. By proper designing of heat sink, substantial decrement of heat generation nearly 46.6 % of can be achieved. It is concluded that the heat sinks are so effective in cooling of IGBTs component substantially.
即使是最高效的电子设备也会因产生热量而导致温度升高。同样,IGBT也受到热产生的影响。散热片对于IGBT至关重要,它可以散发产生的热量,并将IGBT的温度保持在更安全的范围内,以防止IGBT发生故障。因此,一个更好的冷却系统是必不可少的,以消散从IGBT产生的热量,并增加寿命周期。在大多数应用中,空气被用作冷却介质,而其他介质可用于在IGBT内产生更高水平的热量。通常散热器都装有散热片以提高散热率。本文阐述了IGBT结温的重要性以及散热片的作用。已经建立了一个数学模型来预测不同占空比(0.1,0.3和0.5)下IGBT的结温。使用本方法估计在0.5占空比下稳态结温为145°C。通过对散热器的合理设计,可使发热量大幅度减少46.6%。结果表明,该散热器对igbt组件的冷却效果显著。
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引用次数: 0
Modified Quadratic Boost Converter Adopting CLD cell for High Voltage Gain useful in DC Distributed Generation 采用CLD单元实现高电压增益的改进二次升压变换器,适用于直流分布式发电
T. R. Choudhury, Ashutosh Kumar Singh, S. B. Santra, B. Nayak, Arijit Karmahapatra
In this paper, a Quadratic Boost Converter (QBC) derived high voltage gain converter is proposed. This converter is a combination of modified QBC (MQBC) with capacitor inductor diode (CLD) cell. The purpose of this CLD cell is to further enhance the voltage of MQBC whereas to reduce the switch voltage stress. The main feature of this converter is that it reduces the voltage stress of the switch compared to output voltage and independent of duty ratio. The principle of operation, steady state analysis and design of parameters are discussed in this paper. The analysis carried out in this paper is validated through Matlab Simulink platform for a 120 W capacity converter. The converter seems to be more efficient with increased output power.
本文提出了一种二次升压变换器(QBC)衍生的高压增益变换器。该变换器是改进的QBC (MQBC)与电容电感二极管(CLD)电池的组合。该CLD单元的目的是进一步提高MQBC的电压,同时减少开关电压应力。该变换器的主要特点是与输出电压相比减小了开关的电压应力,且与占空比无关。本文论述了其工作原理、稳态分析和参数设计。通过Matlab Simulink平台,对本文的分析结果进行了验证。随着输出功率的增加,变换器似乎更有效。
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引用次数: 0
Comparative Analysis of Curve Reconstruction using Fuzzy C Means and Subtractive Clustering 模糊C均值与减法聚类重构曲线的比较分析
Ajay Dureja
Interpolation and curve fitting are the basic problems in the fields of computer graphics, image processing, and mathematical modeling of curves and surfaces. Another consideration problem in the field of reverse engineering is the reconstructing of a curve or a surface of geometric models from a point set. Curve fitting is helpful for surface reconstruction. Curve fitting can be described as computing the function g, given a set of input data sample points and to generate outputs corresponding to the inputs which is not specified earlier. There are various curve reconstruction techniques available and having their own advantages and disadvantages. In this paper, we try to find and simulate these techniques by making comparisons between some curve reconstruction techniques using clustering.
插值和曲线拟合是计算机图形学、图像处理和曲线曲面数学建模等领域的基本问题。逆向工程领域中另一个需要考虑的问题是从点集重构几何模型的曲线或曲面。曲线拟合有助于曲面重建。曲线拟合可以描述为给定一组输入数据样本点,计算函数g,并生成与之前未指定的输入相对应的输出。有各种各样的曲线重建技术,并有自己的优点和缺点。在本文中,我们试图通过比较一些使用聚类的曲线重建技术来发现和模拟这些技术。
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引用次数: 0
Analysis and Implementation of a Novel Multilevel Inverter Structure Using Reduced Power Electronic Switches and DC Sources 一种基于精简电力电子开关和直流电源的新型多电平逆变器结构分析与实现
Rojalin Rout, T. Roy, T. R. Choudhury, B. Nayak, B. Mishra
A novel structure of multilevel inverter is presented in this paper. The presented topology is a cascaded structure of novel sub-module basic unit which can produce 19 level output voltage. The sub-module consists of 3 asymmetric dc sources (V, 3V, 0.5V) and 12 switches. It is capable of generating both integral and fractional output levels. The basic unit is connected symmetrically in a cascade manner. Proposed topology is compared with other MLI topologies that have been recently developed in terms of a number of switches, gate driver circuits, and dc links. It is observed that this topology uses less number of components at a given level among in comparison to other topologies. Simulation of the proposed basic unit is done in MATLAB/SIMULINK. The circuit is verified for different load conditions such as R-L, L and sudden load change conditions. Total Harmonic Distortion of both output current and output voltage is also determined. This topology is found to generate output levels with very low Total Harmonic Distortion.
提出了一种新型的多电平逆变器结构。所提出的拓扑结构是一种新型子模块基本单元级联结构,可产生19电平输出电压。子模块由3个非对称直流电源(V、3V、0.5V)和12个开关组成。它能够产生积分和分数输出水平。基本单元以级联方式对称连接。将所提出的拓扑结构与最近在许多开关、栅极驱动电路和直流链路方面开发的其他MLI拓扑结构进行比较。可以观察到,与其他拓扑相比,该拓扑在给定级别中使用的组件数量较少。在MATLAB/SIMULINK中对所提出的基本单元进行了仿真。对该电路进行了R-L、L和负载突变等不同负载条件下的验证。同时确定了输出电流和输出电压的总谐波畸变。发现这种拓扑结构产生的输出电平具有非常低的总谐波失真。
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引用次数: 0
Modelling and Simulation of Maximum Power Point Tracking Algorithm based PV Array and Utility Grid Interconnected System 基于光伏阵列与电网互联系统最大功率点跟踪算法的建模与仿真
Sohel Syed, A. Cheeran
Depletion of non-renewable energy sources with the increasing demand in electricity and also to avoid islanding condition an efficient and sustained source of energy becoming mandatory. This paper focuses on mathematical modeling and simulation of PV module with boost converter interconnected with utility grid. MPPT algorithm named Incremental conductance (Inc. Cond.) technique is implemented in boost converter to extract maximum possible power from PV module which in turn depends on solar irradiance and temperature. The output from converter is fed to real time utility grid. This work lead to utilize the renewable solar energy at a large scale by interconnecting PV module and utility grid while extracting constant maximum power from module. This paper will review existing approaches on MPPT algorithms. PV module of 100kw is converted into AC and fed to utility grid. PV and IV characteristics are obtained by modeling mathematically for data sheet SunPower SPR-305E-WHT-D in MATLAB code. The output waveforms for power output from PV module before and after implementation of MPPT algorithm are analyzed through MATLAB Simulation.
随着电力需求的增加,不可再生能源的枯竭,也为了避免孤岛状况,一种有效和持续的能源成为强制性的。本文主要研究了带升压变换器的光伏组件与电网并网的数学建模与仿真。MPPT算法名为增量电导(Inc. Cond)技术在升压转换器中实现,以从光伏模块中提取最大可能的功率,这反过来取决于太阳辐照度和温度。变流器输出的电能被实时送入电网。该项目通过光伏组件和公用电网的互联,大规模利用可再生太阳能,同时从组件中提取恒定的最大功率。本文将回顾现有的MPPT算法。100kw的光伏组件转换成交流电并网。通过MATLAB代码对数据表SunPower SPR-305E-WHT-D进行数学建模,得到PV和IV特性。通过MATLAB仿真分析了实现MPPT算法前后光伏模块输出功率的输出波形。
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引用次数: 1
Routing In Vanets For Freespace And Tworayground Propagation Lossmodels 自由空间和双地面传播损耗模型的vanet路由
T. Nishitha, K. S. Anurag, T. Adilakshmi, Md Rahamath
Adhoc networks are local area networks(LAN) which are built to connect the devices.The term Adhoc implies spontaneous because these networks often bypass a router.Formed by wireless hosts like mobile and routes between the nodes may contain multiple hops.Vehicular ad hoc networks(VANETs) is a part of mobile ad hoc networks(MANETS)-where networks are created and tries to communicate,send information among the vehicles. We used the performance of OLSR and AODV using and FreeSpace, TwoRayGroundPropagationLossModel to evaluate Packet Delivery Ratio,Throughput,Overhead as metrics.The simulation results show that with varying speeds OLSR is suitable when compared to AODV.
自组织网络是用来连接设备的局域网(LAN)。术语Adhoc意味着自发的,因为这些网络通常绕过路由器。由移动等无线主机组成,节点之间的路由可能包含多个跳。车辆自组织网络(VANETs)是移动自组织网络(MANETS)的一部分,在移动自组织网络中创建网络并尝试在车辆之间进行通信和发送信息。我们使用了OLSR和AODV的性能,并使用FreeSpace, TwoRayGroundPropagationLossModel来评估包交付率,吞吐量,开销作为指标。仿真结果表明,与AODV相比,在变速情况下,OLSR是合适的。
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引用次数: 0
Solution of LFC Problem using PD+PI Double Loop Controller Tuned by SCA 用SCA调谐PD+PI双环控制器解决LFC问题
Nimai Charan Patel, Manoj Kumar Debnath, B. K. Sahu, P. Das
Here a double loop PD+PI controller is projected to resolve the load frequency control issue in a dual area conventional hybrid source system. Basing up on a time variant fitness function Sine-cosine algorithm is employed to tune the PD+PI double loop controller's gains. The dual area unified system comprises three types of generating sources in all the areas named as gas, hydro and thermal unit. The system behavior is examined under two dissimilar conditions i.e. in presence of HVDC link and in absence of HVDC link. For both type of investigations an abrupt load perturbation of 1% is considered in first control area. The dominance of projected PD+PI double controller is verified over existing results of PID type conventional controller throughout the examination.
本文提出了一种双环PD+PI控制器来解决双区传统混合源系统的负载频率控制问题。基于时变适应度函数,采用正弦余弦算法对PD+PI双环控制器的增益进行整定。双区统一系统包括三种发电源,在所有区域命名为燃气、水力和火力机组。研究了有直流输电和无直流输电两种不同条件下的系统行为。对于这两种类型的研究,在第一个控制区考虑了1%的突然荷载扰动。在整个测试过程中,验证了投影PD+PI双控制器优于现有PID型常规控制器的结果。
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引用次数: 0
Development of Advanced ATM Surveillance and Security System 先进ATM监控与安全系统的开发
Avinash V. Deshpande, Balwant K. Patil, S. Dodamani, R. Magadum
ATM systems offer great convenience to the public for withdrawal of money from their bank accounts and provides pleasant advantage on losing their time in the bank for many hours. At the same time, there are many ATM robberies that have been reported in India, even when the CCTV cameras are placed in the ATM centres. Hence, it is important to employ an automatic surveillance system to protect and secure the ATM machine from such threats. In this paper, an automatic surveillance and control system for ATM is proposed which can monitor the ATM system for any attack either on ATM machine or on user while doing transaction in ATM centre and prevent it and trap the burglar. This system will enhance the security level of ATM centres. A prototype of this system with necessary hardware is developed to demonstrate the effectiveness of this system in real time ATM centres.
自动取款机系统为公众从他们的银行账户中取款提供了极大的便利,并提供了令人愉快的好处,使他们不必在银行里呆上几个小时。与此同时,即使在自动取款机中心安装了闭路电视摄像机,印度也有许多自动取款机抢劫案的报道。因此,重要的是采用自动监视系统来保护和保护ATM机免受此类威胁。本文提出了一种ATM自动监控系统,该系统可以监控ATM机或用户在ATM中心进行交易时受到的任何攻击,并对其进行防范和捕获窃贼。该系统将提高自动柜员机中心的保安水平。开发了该系统的原型和必要的硬件,以验证该系统在实时ATM中心的有效性。
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引用次数: 1
Improved Variance K Means Algorithm using Multi Objective Genetic Algorithm for Validate Cluster Generation 基于多目标遗传算法的改进方差K均值算法验证聚类生成
A. Saxena, Nikhlesh Pathik, R. Gupta
In past decade, several methods have been introduced to identify the solutions of multiple clustering. Arrangement of these strategies is chiefly in view of the examination of genuine information space, space nature transformation, and sub-space projections. In this paper, an improved k-means Multi Objective Genetic Algorithm(MOGA) is proposed for detecting a generic optimal separation of the given heterogeneous numeral and categorical data within a clearly identified number of clustersProposed method integrates the genetic algorithm within the k-means algorithm with improved cost function to manage the numeral data. For the effective evaluation of the proposed algorithm three original datasets are used from UCI largest dataset repository center. Experimental result shows the effectiveness of the proposed algorithm in regaining the unexpressed cluster designs from categorical dataset if such designs alive. Improved illustration for cluster center is used which can draw cluster behavior with effectiveness because it carries the distribution of all the unreserved values in Cluster. Comparative analysis showed the superiority of proposed algorithm over VK-means algorithm.
在过去的十年中,已经引入了几种方法来识别多重聚类的解。这些策略的安排主要是针对真实信息空间的考察、空间性质转换和子空间投影。本文提出了一种改进的k-means多目标遗传算法(MOGA),用于在明确识别数量的聚类中检测给定异构数字和分类数据的一般最优分离。该方法将k-means算法中的遗传算法与改进的成本函数相结合,对数字数据进行管理。为了有效地评估所提出的算法,使用了来自UCI最大数据库中心的三个原始数据集。实验结果表明,该算法能够有效地从分类数据集中恢复未表达的聚类设计。利用改进的簇中心图,有效地绘制了簇的行为,因为它包含了簇中所有未保留值的分布。对比分析表明,该算法优于VK-means算法。
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引用次数: 0
Design and Development of IoT based System for Retrieval of Agrometeorological Parameters 基于物联网的农业气象参数检索系统设计与开发
Aishwarya Jangam, K. Kale, S. Gaikwad, Amol D. Vibhute
The Internet of Things (IoT) has the ability to transform agriculture industry. Smart farming based on IoT technologies will help farmers to increase yields and better crop management. The objective of this research is to design and develop a near real-time web-based weather and soil monitoring system capable of increasing the crop yield with the help of study of different weather and soil parameter values. This implementation resulted in a monitoring system that can collect the current air temperature, humidity, dew point, heat index, air pressure, rain intensity, soil moisture and soil temperature. The system provides current updates of soil and weather parameters as well as historical values of those parameters. The result obtained in this research is used for computing heat index and monitoring environmental effect on crops. This study demonstrates the ability of data acquisition in the near real-time and remote location accurately and efficiently.
物联网(IoT)有能力改变农业产业。基于物联网技术的智能农业将帮助农民提高产量,更好地管理作物。本研究的目的是设计和开发一个接近实时的基于网络的天气和土壤监测系统,该系统能够通过研究不同的天气和土壤参数值来提高作物产量。这一实现产生了一个监测系统,可以收集当前的空气温度、湿度、露点、热指数、气压、降雨强度、土壤湿度和土壤温度。该系统提供当前更新的土壤和天气参数以及这些参数的历史值。研究结果可用于热指数计算和作物环境效应监测。本研究验证了在近实时和远程位置准确、高效地采集数据的能力。
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引用次数: 2
期刊
2018 International Conference on Recent Innovations in Electrical, Electronics & Communication Engineering (ICRIEECE)
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