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2016 International Conference on Emerging Trends in Electrical Electronics & Sustainable Energy Systems (ICETEESES)最新文献

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Design and analysis of low power CMOS ECG amplifier 低功耗CMOS心电放大器的设计与分析
Kamna Verma, S. Shukla, S. Jaiswal, Kumkum Verma
This paper deals with the design and analysis of CMRR of Electrocardiogram (ECG) amplifier at different W/L of CMOS and Vdd. ECG measurement setup consists of electrodes to measure the ECG signal from the human body, an analog front end (AFE) amplifier that amplifies the ECG signal, analog to digital converter (ADC) for digitizing the analog ECG signal, and a display device to monitor the patient's heart regularly. The common mode rejection ration of ECG is increase with increasing vdd. CMRR of ECG at W/L= (37/27) of NMOS at different Vdd is increase with increase vdd. All the simulations are performed on 180nm CMOS technology with the supply voltage of 1.8V.
本文研究了在CMOS和Vdd的不同W/L下,心电图放大器的CMRR的设计和分析。心电测量装置由测量来自人体的心电信号的电极、放大心电信号的模拟前端(AFE)放大器、将模拟心电信号数字化的模数转换器(ADC)和定期监测患者心脏的显示装置组成。随着vdd的增大,心电共模抑制比增大。不同Vdd下NMOS W/L=(37/27)时的CMRR随Vdd的增加而增加。所有仿真均在180nm CMOS技术上进行,电源电压为1.8V。
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引用次数: 2
Performance analysis of permanent magnet synchronous motor drive using Particle Swarm Optimization technique 基于粒子群优化技术的永磁同步电机驱动性能分析
Deepti Yadav, A. Verma
Permanent magnet synchronous motor (PMSM), a nonlinear speed controller design based on Particle Swarm Optimization (PSO) technique is presented in this paper. For tuning the PID controller, the speed control for PMSM was analysed using PSO algorithm to optimize the parameters in terms of proportional gain (Kp), integral gain (Ki), and derivative gain (Kd). Moreover, the overall system is evaluated under various operating conditions such as starting, braking, load application and load removal. Besides this, comparison between speed control of PMSM using Ziegler-Nichols method and speed control of PMSM with PSO technique has been carried out. These analyses are estimated in terms of dynamic, static response and total harmonic distortion (THD). The transient response are examined in terms of settling time(ts), risetime(tr), peak time (tp), and peak overshoot (Mp). Overall, PID speed controller with PSO technique shows that the proposed method has improved the performance under the various operating conditions.
提出了一种基于粒子群优化(PSO)技术的永磁同步电机非线性速度控制器设计方法。为了对PID控制器进行整定,利用粒子群算法对比例增益(Kp)、积分增益(Ki)和导数增益(Kd)等参数进行优化,分析了永磁同步电机的速度控制。此外,整个系统在各种操作条件下进行评估,如启动,制动,负载施加和负载去除。在此基础上,对齐格勒-尼科尔斯法和粒子群控制法进行了比较。这些分析是根据动态响应、静态响应和总谐波失真(THD)来估计的。暂态响应是根据稳定时间(ts),上升时间(tr),峰值时间(tp)和峰值超调(Mp)来检查的。总体而言,采用粒子群优化技术的PID速度控制器在各种工况下的性能都得到了改善。
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引用次数: 12
Improvising tuning techniques of digital PID controller for blood glucose level of diabetic patient 糖尿病患者血糖水平数字PID控制器的即兴调校技术
Rohit Sharma, Sumit Mohanty, Amlan Basu
In this paper the digital PID (Proportional-integral derivative) controller is designed based on controlling the blood glucose level of diabetic patient. The main objective is to design a digital PID controller for blood glucose level of diabetic patient which can inject external insulin to the patient in a accurate controlled way. The blood sugar level of the patient is considered as input variable & injected insulin level is considered as output variable which is to be manipulated. A dynamic model is constructed & transfer function is defined for this system. Using various tuning rules like Cohen-Coon method, Astrom-Hagglund or AMIGO method and Chien-Hrones-Reswick (CHR) method the Proportional, Integral & Derivative coefficient. The tuning responses are studied & parameters are compared. Best response given by the PID is converted into Digital PID. In this paper we also studied different transformation method to convert the conventional PID into the digital PID controller.
针对糖尿病患者血糖水平的控制问题,设计了数字式比例积分导数PID控制器。主要目的是设计一种糖尿病患者血糖水平的数字PID控制器,可以对患者注射外用胰岛素进行精确控制。将患者的血糖水平作为输入变量,将注射胰岛素水平作为输出变量进行操作。建立了该系统的动态模型并定义了传递函数。采用Cohen-Coon法、Astrom-Hagglund法或AMIGO法和Chien-Hrones-Reswick (CHR)法等各种调谐规则,得到比例、积分和导数系数。研究了调谐响应,并对参数进行了比较。将PID给出的最佳响应转换为数字PID。本文还研究了将传统PID转换为数字PID控制器的不同变换方法。
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引用次数: 10
Simple algorithm for identification of unbalanced sag type 不平衡凹陷类型识别的简单算法
S. Murkute, M. Chaudhari
This paper proposes a simple algorithm to detect and identify the unbalanced three phase voltage sag. The technique is based Features extracted from space vector magnitude. For normal system operation the space vector magnitude is constant dc, and during unbalanced sag it oscillates. The features of space vector magnitude are identified to investigate the sag type. S-Transform is used as a tool for feature extraction from SVM. The sag type is identified based on Symmetrical component classification is used The sag types are classified in to six types as given by symmetrical component classification. The technique is tested using simulated sag data. The results show that space vector magnitude S-transform technique is able to identify all types of three phase sags correctly. It avoids the need to calculate sequence components. The main advantage of using the technique is its simplicity and reliability.
本文提出了一种简单的检测和识别不平衡三相电压暂降的算法。该技术基于从空间矢量大小中提取的特征。对于正常的系统运行,空间矢量的大小是恒定的直流电,在不平衡凹陷时,它会振荡。识别空间矢量大小特征,研究凹陷类型。使用S-Transform作为SVM特征提取工具。采用对称分量分类法对凹陷类型进行了识别,根据对称分量分类法将凹陷类型划分为6种类型。利用模拟凹陷数据对该技术进行了测试。结果表明,空间矢量幅度s变换技术能够正确识别所有类型的三相凹陷。它避免了计算序列分量的需要。使用该技术的主要优点是简单可靠。
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引用次数: 1
Frequency stability analysis of hybrid power system based on solar PV with SMEs unit 太阳能光伏与中小机组混合电力系统的频率稳定性分析
S. Singh, R. Verma, Ashish Kumar Shakya, S. Singh
Storage Technology has emerged as main backup powers provider in the era of Smart Grid. Frequency stability analysis of a hybrid power system (HPS) based on solar PV and Superconducting Magnetic Energy Storage system (SMES) unit have discussed in this paper. Generally frequency instability problem occurs due to abrupt variation in load demand growth and generated power variations from different renewable power sources. To Solve these fluctuating problem, renewable power generators are equipped with various storage system. On the bases of frequency stability, effect of enabling the SMEs operation with the HPS has also been analyzed in this paper. HPS model has simulated in two different cases. First one is the steady state analysis with controller and another is dynamic operation of the system throughout a day. Genetic Algorithm is used for optimizing the controller's parameter. In the presence of large disturbance the effect of limited storage capability of SMES unit as large disturbance is also being considered. Matlab/Simulink platform is used for analyzing the HPS model. From Simulation results it is observed that SMES unit can mitigate the frequency fluctuations and improves system stability in both cases for variable PV power and uneven demand loads.
在智能电网时代,储能技术已成为主要的后备电源。本文讨论了基于太阳能光伏和超导磁储能系统(SMES)的混合电力系统的频率稳定性分析。频率不稳定问题通常是由于负荷需求增长的突然变化和不同可再生能源发电功率的变化而产生的。为了解决这些波动问题,可再生能源发电机组配备了各种存储系统。在频率稳定的基础上,本文还分析了采用HPS使中小企业运行的效果。HPS模型模拟了两种不同的情况。一种是带控制器的稳态分析,另一种是系统全天的动态运行。采用遗传算法对控制器参数进行优化。在大扰动存在的情况下,还考虑了中小企业机组有限的存储能力作为大扰动的影响。利用Matlab/Simulink平台对HPS模型进行分析。仿真结果表明,在光伏发电功率变化和需求负荷不均匀的情况下,SMES机组都能缓解频率波动,提高系统稳定性。
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引用次数: 11
A smart volt-var optimization engine for energy distribution system 一种用于配电系统的智能伏无优化引擎
S. Singh, S. Singh
Volt-Var Optimization (VVO) is a renovated smart grid technology that utilized the advance smart grid assets such as Advance Metering Infrastructure (AMI), Distribution Management System (DMS) and Advanced Communication System. VVO offers energy savings with associated reduction in green house gas emission and other directly or indirectly benefits to customers and/or utilities. The main function of the VVO is to determine the operational setting of volt/var control devices, to minimize the system loss of the distribution network and switching operation of the On-load Tap Changer (OLTC), Automatic Voltage Regulator (AVR), and Capacitor Banks (CBs). VVO is an advanced method that optimizes voltage and/or reactive power (VAR) of a distribution network based on predetermined aggregated feeder load profile. This paper presents a critical review of VVO/CVR technology with traditional and existing techniques in the era of smart grid. A Smart Volt-Var optimization engine also proposed for medium and low voltage distribution feeders.
伏无优化(VVO)是利用先进计量基础设施(AMI)、配电管理系统(DMS)和先进通信系统等先进智能电网资产的一种革新型智能电网技术。VVO提供节能与相关的减少温室气体排放和其他直接或间接的利益客户和/或公用事业。VVO的主要功能是确定电压/var控制装置的运行设置,以最大限度地减少配电网的系统损耗和有载分接开关(OLTC)、自动电压调节器(AVR)和电容器组(CBs)的切换操作。VVO是一种基于预先确定的馈线负荷分布曲线优化配电网电压和/或无功功率(VAR)的先进方法。本文结合智能电网时代的传统技术和现有技术,对VVO/CVR技术进行了综述。提出了一种适用于中、低压配电馈线的智能伏无优化引擎。
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引用次数: 4
Energy detection of unknown signals over Rayleigh fading channel for EGC and SSC diversity combining techniques 基于EGC和SSC分集组合技术的瑞利衰落信道未知信号能量检测
Rupali Agarwal, Neelam Srivastava, H. Katiyar
The problem of spectrum congestion is a big challenge for the researchers now a days. This problem can be solved by cognitive radio. With the help of cognitive radio, the spectrum which is not being used by any licensed user, at a particular time period, can be used by secondary or cognitive radio user, making more efficient spectrum utilization. This is done by spectrum sensing process. Among many methods of spectrum sensing, energy sensing method is used in this paper as this is a less complex method as compared to others. Performance of a cognitive radio system is analysed with the help of ROC (Receiver Operating Characteristics) which is the graph between probability of detection and probability of false alarm. As the probability of detection should be high and probability of false alarm should be low, ROC gives a trade off between the two values. In this paper, simulation and analytical results for probability of detection and probability of false alarm are compared for different parameters in AWGN channel. ROC and probability of detection vs SNR results are compared for EGC and SSC diversity combining techniques in Rayleigh fading channel.
目前,频谱拥塞问题是研究人员面临的一大挑战。这个问题可以通过认知无线电来解决。在认知无线电的帮助下,在特定时间段内未被任何许可用户使用的频谱可以被辅助或认知无线电用户使用,从而提高频谱利用效率。这是通过频谱传感过程完成的。在众多的频谱传感方法中,本文采用的是能量传感方法,因为相对于其他方法而言,能量传感方法的复杂性较低。利用接收机工作特征(Receiver Operating characteristic, ROC)来分析认知无线电系统的性能,ROC是检测概率与虚警概率之间的图。由于检测的概率应该是高的,而虚警的概率应该是低的,ROC给出了两个值之间的权衡。本文对AWGN信道中不同参数下的检测概率和虚警概率的仿真分析结果进行了比较。比较了瑞利衰落信道下EGC和SSC分集组合技术的ROC和检测概率与信噪比结果。
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引用次数: 2
Image tampering detection using local phase based operator 基于局部相位算子的图像篡改检测
Saurabh Agarwal, S. Chand
Image tampering detection is important due to many incidences of tampered images misuse. In this paper, we propose a hybrid approach for image tampering detection using range filter and texture descriptor. First we highlights important details of the image using range filtering. The range filter highlights the edges, contours and important details of the objects in an image. Further we apply texture descriptor based on local phase of the image in frequency domain is applied to extract crucial features of the image. This texture descriptor has high descriptive ability that provides sufficient image internal statistical information for detecting image forgery. The CASIA v1.0 database is used for performance estimation of our hybrid approach. For classification between tampered and original images Spectral Regression Discriminant Analysis and Support Vector Machine are used as a classifier. Our method outperforms some of the state of the art methods.
由于篡改图像被误用的事件很多,图像篡改检测非常重要。本文提出了一种基于距离滤波器和纹理描述符的混合图像篡改检测方法。首先,我们使用范围滤波突出图像的重要细节。范围过滤器突出显示图像中物体的边缘、轮廓和重要细节。在频域应用基于图像局部相位的纹理描述子提取图像的关键特征。该纹理描述符具有较高的描述能力,为检测图像伪造提供了充分的图像内部统计信息。CASIA v1.0数据库用于我们的混合方法的性能评估。对于篡改图像和原始图像的分类,使用了光谱回归判别分析和支持向量机作为分类器。我们的方法优于一些最先进的方法。
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引用次数: 0
Grid integration and power quality issues of wind and solar energy system: A review 风电、太阳能并网与电能质量问题综述
Varun Kumar, A. S. Pandey, S. K. Sinha
This paper presents a review on grid Integration and power quality issues associated with the integration of renewable energy systems in to grid and Role of power electronic devices and Flexible AC Transmission Systems related to these Issues. In this paper, recent trends in power electronics for the integration of wind and photovoltaic (PV) power generators are presented. Discussions about common and future trends in renewable energy systems based on reliability and maturity of each technology are presented. Classification of various Power Quality Issues used by different researchers has been done and put for reference. Application of various techniques as applied to mitigate the different Power Quality problems is also presented for consideration. Power Electronics interface not only plays a very important role in efficient integration of Wind and Solar energy system but also to its effects on the power-system operation especially where the renewable energy source constitutes a significant part of the total system capacity. However there are various issues related to grid integration of RES keeping in the view of aforesaid trends it becomes necessary to investigate the possible solutions for these issues.
本文综述了与可再生能源并网相关的并网和电能质量问题,以及与这些问题相关的电力电子设备和柔性交流输电系统的作用。本文介绍了风能和光伏发电机组集成的电力电子技术的最新发展趋势。基于各种技术的可靠性和成熟度,讨论了可再生能源系统的共同趋势和未来趋势。对不同研究人员使用的各种电能质量问题进行了分类,供参考。各种技术的应用,以减轻不同的电能质量问题也提出了考虑。电力电子接口不仅对风能和太阳能系统的高效集成起着非常重要的作用,而且对电力系统的运行也有重要的影响,特别是在可再生能源占系统总容量很大一部分的情况下。然而,鉴于上述趋势,有必要研究这些问题的可能解决方案,与可再生能源电网整合相关的各种问题。
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引用次数: 96
Tri band BPF using stub loaded new stepped impedence resonator 采用短段加载的新型阶跃阻抗谐振器的三频带BPF
Sachin Sachan, R. Chauhan
A compact microstrip tri band BPF using stub loaded new stepped impedance resonator is proposed in this paper. Presented filter is compact in size, simple and easy to fabricate. By tuning the length of stub the frequency of passband filter is controlled but the frequency of first passband is not changing. The BPF achieved insertion loss of 0.7, 0.6 and 0.8dB at 1.8, 4.18 and 5.52GHz respectively and the return loss is below 17dB. In the Proposed filter miniaturization is achieved with size of 0.25 λg × 0.08 λg HFSS tool is used for the simulation of proposed filter.
本文提出了一种基于短段负载的新型阶跃阻抗谐振器的小型微带三带BPF。该过滤器体积小,制作简单,易于操作。通过调整短段长度来控制通带滤波器的频率,但不改变第一通带的频率。该BPF在1.8、4.18和5.52GHz频段的插入损耗分别为0.7、0.6和0.8dB,回波损耗低于17dB。该滤波器实现了尺寸为0.25 λg × 0.08 λg的小型化,采用HFSS工具对滤波器进行仿真。
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引用次数: 2
期刊
2016 International Conference on Emerging Trends in Electrical Electronics & Sustainable Energy Systems (ICETEESES)
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