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2016 International Conference on Electrical, Electronics, and Optimization Techniques (ICEEOT)最新文献

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Analysis of different modulation techniques for multilevel inverters 多电平逆变器不同调制技术分析
G. J. Rushiraj, P. Kapil
Analysis of different modulation techniques for multilevel inverter is discussed. To control the multilevel inverters, different modulation techniques have been used. Amongst them multi carrier Sine Pulse Width Modulation (SPWM) techniques are widely used for different multilevel inverter topologies. These modulation techniques are derived from the conventional two level inverter SPWM technique. Different modulation techniques are compared on the basis of the output THD, utilization of DC link voltages and common mode voltage. The detailed analysis of modulation techniques are shown on the basis of the output THD offered by the five level Neutral Point Clamped or Diode Clamped (NPC) inverter.
对多电平逆变器的调制技术进行了分析。为了控制多电平逆变器,采用了不同的调制技术。其中,多载波正弦脉宽调制(SPWM)技术被广泛应用于不同的多电平逆变器拓扑结构。这些调制技术来源于传统的双电平逆变器SPWM技术。根据输出THD、直流链路电压和共模电压的利用率,比较了不同的调制技术。根据五电平中性点箝位或二极管箝位(NPC)逆变器提供的输出THD,对调制技术进行了详细的分析。
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引用次数: 6
Assessment of cost of unserved energy for Sri Lankan industries 评估斯里兰卡工业未使用能源的成本
D. P. Colambage, W. H. Eranga, K. M. P. H. Senaratne, H. W. M. K. Vithanage, H. Perera
The cost of unserved energy is an important parameter in the long term generation planning. The indices produced based on this value are utilized in a wide range of management decisions throughout the utility. The figure of cost of unserverd energy currently used by Ceylon Electricity Board(CEB) is based on studies done over a decade ago. It is important to obtain an updated estimate for this. Analyzing data on electricity interruption for different industry categories based on their contribution to the GDP will provide the loss due to the electricity interruptions occurred by different customer types and categories. These data can then be used to calculate cost of energy unserved in the selected industry categories. Data is gathered through a survey based study conducted on a stratified sample to cover the full spectrum of industries. The work includes design of the questionnaire, selection of the sample, conduct of the survey, analysis and conclusion. At the end of the project satisfactory methodology will be developed for calculating cost of unserved energy.
未使用能源的成本是长期发电规划中的一个重要参数。基于该值生成的指数在整个公用事业中广泛用于管理决策。锡兰电力局(CEB)目前使用的未供应能源的成本数字是根据十多年前的研究得出的。获得这方面的最新估计非常重要。根据对GDP的贡献,分析不同行业类别的停电数据,提供不同客户类型和类别因停电造成的损失。这些数据可以用来计算选定行业类别中未使用的能源成本。数据是通过对分层样本进行的调查研究收集的,以覆盖所有行业。该工作包括问卷的设计,样本的选择,调查的进行,分析和结论。在项目结束时,将制定出令人满意的方法来计算未使用能源的成本。
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引用次数: 0
Multi-area economic dispatch using flower pollination algorithm 基于花授粉算法的多区域经济调度
S. Vijayaraj, R. Santhi
This paper presents application of flower pollination algorithm for solving multi area economic load dispatch problem considering tie line constraint, transmission loss, multiple fuel options, valve point loading effect and prohibited operating zones. Flower pollination algorithm is a nature-inspired algorithm, based on the nature of flowering plants. Intensity of the calculation is tried on three distinctive test cases comprise of fluctuating level of unpredictability and it is compared with artificial bee colony optimization, differential evolution, evolutionary programming and real coded genetic algorithm. The results show the quick convergence and effectiveness of the projected technique.
本文将花授粉算法应用于求解考虑线路约束、传输损耗、多种燃料选择、阀点加载效应和禁止作用区的多区域经济负荷调度问题。花卉授粉算法是一种基于开花植物性质的自然启发算法。在不可预测性波动水平三种不同的测试用例上进行了计算强度试验,并与人工蜂群优化、差分进化、进化规划和实际编码遗传算法进行了比较。结果表明,该投影技术具有较快的收敛性和有效性。
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引用次数: 21
Assessment of voltage stability in microgrid 微电网电压稳定性评估
R. Micky, R. Lakshmi, R. Sunitha, S. Ashok
On-line security assessment techniques use real-time measurements from different locations in a power system and continuously update the security of the system. The introduction of Phasor Measurement Units (PMU) and their use as a powerful measurement tool in power systems has made possible for fast accurate algorithms. The simulated PMU data is used to determine the voltage indices being considered in this work to predict the stability of the Microgrid. The on-line assessment is supposed to capture the continuous changes of operation states of power system i.e. to assess if the dynamic state of power system is acceptable or not. The islanding detection time is an important factor for the smooth transition to islanding mode. For this purpose voltage security indices can be used to promptly send signals to the Microgrid Control Centre for islanding. In this work initially a transient stability analysis is performed on a Microgrid test bed using DIgSILENT and the simulation results are analyzed. The indices taken for the study Voltage Collapse Proximity Index (VCPI), Voltage Security Index (VSI) and Power Transfer Stability Index (PTSI) are compared. The credibility of these indices is validated on a typical utility system from Calicut, Kerala. From the simulation performance of the indices are analysed for three particular cases.
在线安全评估技术利用电力系统中不同位置的实时测量数据,不断更新系统的安全性。相量测量单元(PMU)的引入及其在电力系统中作为一种强大的测量工具的使用,使快速准确的算法成为可能。仿真PMU数据用于确定工作中考虑的电压指标,以预测微电网的稳定性。在线评估的目的是捕捉电力系统运行状态的连续变化,即评估电力系统的动态状态是否可以接受。孤岛检测时间是保证孤岛模式平稳过渡的重要因素。为此,电压安全指数可用于及时向微电网控制中心发送信号进行孤岛。本文首先利用DIgSILENT软件对微电网试验台进行了暂态稳定性分析,并对仿真结果进行了分析。对研究中采用的电压崩溃接近指数(VCPI)、电压安全指数(VSI)和输电稳定指数(PTSI)进行了比较。这些指数的可信度在喀拉拉邦卡利卡特的一个典型公用事业系统上得到了验证。从仿真的角度分析了三种具体情况下指标的性能。
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引用次数: 9
Applications of graphene for communication, electronics and medical fields: A review 石墨烯在通信、电子和医疗领域的应用综述
Ankit Dubey, Shivansh Dave, Mayuri Lakhani, Aishwarya Sharma
Primary intention of this paper is to provide a study of Graphene applications such as Optoelectronics, Wearable Technologies, Energy storing devices and Radio Transmission and broadcasting. For understanding the Graphene as a material, its mechanical, chemical, electrical and optical properties are discussed. Brief history about the discovery of Graphene is also included. The electronics industry has come way far in development of semiconductors, their operation. Where the horizon of Silicon semiconductors ends, Graphene comes into picture. Graphene due to its exclusive and extensive properties along with being cheap and easily accessible can be used in designing and manufacturing of several devices. There are immense opportunities to use Graphene technology in future communication, electronics, medical and other fields, as discussed in the article.
本文的主要目的是研究石墨烯在光电子、可穿戴技术、储能设备和无线电传输和广播等方面的应用。为了理解石墨烯作为一种材料,我们讨论了它的机械、化学、电学和光学性质。关于石墨烯的发现简史也包括在内。电子工业在半导体的发展上取得了长足的进步。在硅半导体的地平线上,石墨烯进入了人们的视野。石墨烯由于其独特和广泛的特性以及廉价和易于获取,可用于设计和制造多种设备。正如文章中所讨论的,石墨烯技术在未来的通信、电子、医疗和其他领域有巨大的应用机会。
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引用次数: 6
Cognitive radio spectrum sensing: A survey 认知无线电频谱传感:综述
Niranjan Muchandi, Rajashri Khanai
Cognitive Radio (CR) is a promising technology to improve the spectrum utilization efficiency. Due to the increasing demand for wireless communication CR allows better use of the radio spectrum. CR is intelligent network that adapt to the changes in spectrum environment. The main aspect of the cognitive radio is spectrum sensing. It is one of the most challenging issues in cognitive radio systems. In this paper, a survey of spectrum sensing techniques for cognitive radio is presented. Various sensing scheme for the cognitive radio are reviewed and the challenges associated with it. The paper describes the cooperative and signal processing sensing techniques and their various forms.
认知无线电(CR)是一种很有前途的提高频谱利用效率的技术。由于无线通信需求的增加,CR允许更好地利用无线电频谱。CR是一种适应频谱环境变化的智能网络。认知无线电的主要方面是频谱感知。这是认知无线电系统中最具挑战性的问题之一。本文综述了认知无线电频谱感知技术的研究进展。综述了认知无线电的各种传感方案及其面临的挑战。本文介绍了协同传感技术和信号处理传感技术及其各种形式。
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引用次数: 46
PID controller design for cruise control system using genetic algorithm 基于遗传算法的巡航控制系统PID控制器设计
M. Rout, Debdoot Sain, S. Swain, S. Mishra
In this paper, the design of a Proportional-Integral-Derivative (PID) controller for the cruise control system has been proposed. The cruise control system, which is a highly nonlinear, has been linearized around the equilibrium point. The controller has been designed for the linearized model, by taking the dominant pole concept in the closed loop characteristic equation. The PID controller parameters, i.e. proportional, integral and derivative parameters have been tuned using Genetic Algorithm (GA). In this study, the performance of the controller has been compared with that of the conventional PID, state space and Fuzzy logic based controller. The simulation output reveals the superiority of the proposed controller in terms of maximum overshoot, peak time, rise time, settling time and steady state error. The sensitivity and complementary sensitivity analysis show the robust behaviour of the system with output disturbance and high-frequency noise rejection qualities. As a scope of further research, fractional order and 2-dof PID controller will be designed for this cruise control system and the performance will be compared with this design.
本文提出了一种用于巡航控制系统的比例-积分-导数(PID)控制器的设计。巡航控制系统是一个高度非线性的系统,在平衡点周围进行了线性化处理。采用闭环特征方程中的主导极点概念,设计了线性化模型的控制器。采用遗传算法对PID控制器的比例、积分和导数参数进行了整定。在本研究中,将该控制器的性能与传统PID、状态空间和基于模糊逻辑的控制器进行了比较。仿真结果显示了该控制器在最大超调量、峰值时间、上升时间、稳定时间和稳态误差等方面的优越性。灵敏度分析和互补灵敏度分析表明,该系统具有鲁棒性,具有输出扰动和高频噪声抑制特性。作为进一步研究的范围,将为该巡航控制系统设计分数阶二自由度PID控制器,并与该控制器的性能进行比较。
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引用次数: 37
Big-data: Acid versus base for database transactions 大数据:数据库事务的酸性与碱性
Narsimha Banothu, ShankarNayak Bhukya, K. Sharma
Database developers all know the ACID acronym. It says that database transactions should be: Atomic, Consistent, Isolated, and Durable. These qualities seem indispensable, and yet they are incompatible with availability and performance in very large systems. For example, suppose you run an online book store and you proudly display how many of each book you have in your inventory. Every time someone is in the process of buying a book, you lock part of the database until they finish so that all visitors around the world will see accurate inventory numbers. That works well if you run The Shop around the Corner but not if you run Amazon.com. Amazon might instead use cached data. Users would not see not the inventory count at this second, but what it was say an hour ago when the last snapshot was taken. Also, Amazon might violate the “I” in ACID by tolerating a small probability that simultaneous transactions could interfere with each other. For example, two customers might both believe that they just purchased the last copy of a certain book. The company might risk having to apologize to one of the two customers (and maybe compensate them with a gift card) rather than slowing down their site and irritating myriad other customers. There is a computer science theorem that quantifies the inevitable trade-offs. Eric Brewer's CAP theorem says that if you want consistency, availability, and partition tolerance, you have to settle for two out of three. (For a distributed system, partition tolerance means the system will continue to work unless there is a total network failure. A few nodes can fail and the system keeps going.) An alternative to ACID is BASE: Basic Availability, Soft-state, Eventual consistency.
数据库开发人员都知道ACID这个缩写。它说数据库事务应该是:原子的、一致的、隔离的和持久的。这些品质似乎是不可或缺的,但是它们与非常大的系统中的可用性和性能不相容。例如,假设您经营一家在线书店,并且您自豪地显示您的库存中每种书的数量。每当有人在购买一本书的过程中,你就会锁定部分数据库,直到他们完成购买,这样世界各地的所有访问者都能看到准确的库存数字。如果你经营的是The Shop around The Corner,这种方法就会奏效,但如果你经营的是Amazon.com,就行不通了。亚马逊可能会转而使用缓存数据。用户不会看到这一秒的库存数量,而是看到一小时前最后一次快照时的情况。此外,Amazon可能会因为容忍同时发生的事务相互干扰的小概率而违反ACID中的“I”。例如,两个客户可能都认为他们刚刚购买了某本书的最后一本。该公司可能不得不冒险向两个客户中的一个道歉(可能用礼品卡补偿他们),而不是放慢他们的网站,激怒无数其他客户。有一个计算机科学定理可以量化这些不可避免的权衡。Eric Brewer的CAP定理说,如果您想要一致性、可用性和分区容忍度,您必须满足三个中的两个。(对于分布式系统,分区容忍意味着系统将继续工作,除非整个网络出现故障。几个节点可能会出现故障,但系统会继续运行。)ACID的替代方案是BASE:基本可用性、软状态、最终一致性。
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引用次数: 9
An analytical review on FPGA based autonomous flight control system for small UAVs 基于FPGA的小型无人机自主飞行控制系统分析综述
B. Sharma, Narendra Khatri, Abhishek Sharma
Recently small UAVs are widely used in real world applications. In the absence of the pilot, Flight control system (FCS) is the brain of the any aircraft especially in the UAVs. FCS can use various controllers such as conventional PID Controller, combination of PID controller with Kalman filter, fuzzy logic controller and FPGA /DSP based controller, etc. This paper presents, brief explanation of four techniques used in the development of the flight control system for small UAVs namely, purpose of work, flow diagram, advantages and disadvantages. Field Programmable Gate Array (FPGA) /DSP based small UAVs are better one, as it is a low power, fast response, less volume and compatibility to applications. The aim of this paper is to achieve a suitable characteristics compatible with applications in the field of unmanned aviation.
近年来,小型无人机在实际应用中得到了广泛的应用。在没有飞行员的情况下,飞行控制系统(FCS)是任何飞机的大脑,特别是在无人机中。FCS可以使用各种控制器,如常规PID控制器、PID控制器与卡尔曼滤波的组合、模糊逻辑控制器和基于FPGA /DSP的控制器等。本文简要介绍了小型无人机飞行控制系统开发中采用的四种技术,即工作目的、流程图、优缺点。基于现场可编程门阵列(FPGA) /DSP的小型无人机是较好的一种,因为它具有低功耗,快速响应,体积小和应用兼容性。本文的目的是为了使其具有适合无人航空领域应用的特性。
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引用次数: 10
Artificial intelligence based electric grid operation enabled with data encryption 基于人工智能的电网运行,启用数据加密
Akshya Kumar Sahoo, Sudipta Rudra, A. Mohanty
This article explores the current trend of artificial intelligence in today's application in electrical-engineering. Intelligent agents using various intelligent algorithms can enhance the performance rate of a digital electric grid system. This paper presents the development of state-of-art technology of electric grid control systems using multi-agent systems. This system is implemented using various microcontrollers and iec61580 communication protocol for communication in automated electric grid system and Cloud communication technology for wireless communication applied for efficient data communication for multi agent systems. The control mechanism model of the gridstation is designed in the lab view simulator. Multi-agent systems are controlled using a Fuzzy logic controller implemented with self-learning parameter and algorithm which reduces the work load of ied's and eliminates the use of analog electronic control system.
本文探讨了当今人工智能在电气工程中的应用趋势。采用各种智能算法的智能代理可以提高数字电网系统的性能。本文介绍了采用多智能体系统的电网控制系统的最新技术进展。该系统采用多种微控制器和iec61580通信协议实现自动化电网系统的通信,采用云通信技术实现无线通信,实现多智能体系统的高效数据通信。在实验室视图模拟器中设计了网格站的控制机理模型。采用具有自学习参数和算法的模糊控制器对多智能体系统进行控制,减少了智能体的工作量,消除了模拟电子控制系统的使用。
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引用次数: 3
期刊
2016 International Conference on Electrical, Electronics, and Optimization Techniques (ICEEOT)
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