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2016 IEEE 1st International Conference on Power Electronics, Intelligent Control and Energy Systems (ICPEICES)最新文献

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Impact of temperature on the performance of sub-35nm symmetric Double Gate Junctionless Transistor based inverter using High-K gate dielectric, a TCAD simulation study 温度对基于高k栅极介质的亚35nm对称双栅无结晶体管逆变器性能的影响进行了TCAD仿真研究
Uttam Ch. Boro, N. Bora, P. Pegu, R. Subadar
In this paper, the effect High Temperature on the performance of a symmetric double gate junctionless transistor based inverter is analyzed. 3D simulations are performed using COGENDA 3D TCAD tool to investigate its switching characteristics, voltage transfer characteristics, output current and noise margin at different temperatures. High-K gate dielectric material (HFO2) is used as the gate oxide to achieve improved device characteristics and hence the inverter performance.
本文分析了高温对对称双栅无结晶体管逆变器性能的影响。利用COGENDA 3D TCAD工具进行三维仿真,研究其在不同温度下的开关特性、电压转移特性、输出电流和噪声裕度。采用高k栅极介电材料(HFO2)作为栅极氧化物,以改善器件特性,从而提高逆变器性能。
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引用次数: 2
Wind speed and power prediction of prominent wind power potential states in India using GRNN 利用GRNN对印度主要风电潜力邦的风速和功率进行预测
Savita, M. A. Ansari, N. Pal, H. Malik
This paper introduces Generalized Regression Neural Network (GRNN) for long term wind speed prediction of major wind power potential states in India. The performance of proposed GRNN model is evaluated using the publicly available online dataset of National Aeronautics and Space Administration (NASA). Data samples of 26 cities are used for training the generalized regression neural network and remaining 5 cities data samples are used for testing purpose. Air temperature, earth temperature, relative humidity, daily solar radiation, elevation, latitude, heating degree days, cooling degree days, frost days, longitude and atmospheric pressure are used as input variables. Mean square error between measured and forecasted wind speed using training data samples and testing data samples are found to be 0.000042279 and 0.1543. Here it is important to impart that the proposed GRNN model is trained and tested with data samples of different geographical locations in order to make it feasible for wind speed prediction of any other location. Wind power of prominent wind power potential states in India are predicted by a variable pitch and speed control wind turbine G80-2MW.
本文将广义回归神经网络(GRNN)应用于印度主要风电潜力邦的长期风速预测。利用美国国家航空航天局(NASA)公开的在线数据集对所提出的GRNN模型的性能进行了评估。26个城市的数据样本用于训练广义回归神经网络,其余5个城市的数据样本用于测试。输入变量为气温、地球温度、相对湿度、日太阳辐射、高程、纬度、加热度天数、冷却度天数、霜冻天数、经度和大气压。使用训练数据样本和测试数据样本测量风速和预测风速的均方误差分别为0.000042279和0.1543。在这里,重要的是要指出,所提出的GRNN模型是用不同地理位置的数据样本进行训练和测试的,以便使其适用于任何其他位置的风速预测。印度风力发电潜力突出的州的风力发电是由一个可变螺距和速度控制的G80-2MW风力涡轮机预测的。
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引用次数: 10
A comparative review of various segmentation techniques for early detection of exudates in retinal fundus images 各种分割技术在视网膜眼底图像渗出物早期检测中的比较综述
A. Kaur, Prabhpreet Kaur
Diabetic retinopathy is a health problem that most widespread cause of vision damage in developed countries. Early recognition of Diabetic retinopathy is very important for saving vision pairment and for effective treatment. Exudates are the symptoms of DR. Many approaches in literature are discussed on segmenting the exudates. This paper has shown different techniques of exudates segmentation with its benefits and limitations. All discussed techniques have improved the performance in terms of accuracy, specificity, PPV, Error Rate and sensitivity. The comparison has shown that ant colony optimization based segmentation has better results over each techniques.
糖尿病视网膜病变是发达国家视力损害最普遍的健康问题。早期发现糖尿病视网膜病变对挽救视力损害和有效治疗具有重要意义。渗出物是dr的症状,文献中讨论了许多分割渗出物的方法。本文介绍了不同的渗出液分割技术及其优缺点。所讨论的技术在准确性、特异性、PPV、错误率和灵敏度方面都有提高。对比结果表明,基于蚁群算法的图像分割效果较好。
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引用次数: 3
Fuzzy & ANFIS based temperature control of water bath system 基于模糊神经网络的水浴系统温度控制
B. Bhushan, Ajit Kumar Sharma, Deepti Singh
Conventional controllers usually require a prior knowledge of mathematical modeling of the process. The inaccuracy of mathematical modeling degrades the performance of the process, especially for non-linear and complex control problem. To overcome above difficulties intelligent controllers like Fuzzy Logic (FL) and Adaptive Neuro-Fuzzy Inference System (ANFIS), are implemented. The Fuzzy controller is designed to work with knowledge in the form of linguistic control rules. But the translation of these linguistic rules into the framework of fuzzy set theory depends on the choice of certain parameters, for which no formal method is known. It is analyzed that ANFIS is best suitable for adaptive temperature control of above system. As compared to FLC, ANFIS produces a stable control signal. It has much better temperature tracking capability with almost zero overshoot and minimum absolute error.
传统的控制器通常需要事先了解过程的数学建模。数学建模的不准确性降低了过程的性能,特别是对于非线性和复杂的控制问题。为了克服上述困难,实现了模糊逻辑(FL)和自适应神经模糊推理系统(ANFIS)等智能控制器。模糊控制器被设计成与语言控制规则形式的知识一起工作。但是,将这些语言规则转化为模糊集理论的框架取决于某些参数的选择,而这些参数的选择尚无形式化方法。分析表明,ANFIS最适合于上述系统的自适应温度控制。与FLC相比,ANFIS产生稳定的控制信号。它具有更好的温度跟踪能力,几乎为零超调和最小的绝对误差。
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引用次数: 1
Simulation and experimental study of single phase PWM AC/DC converter for Microgrid application 微电网单相PWM交/直流变换器的仿真与实验研究
G. Rakesh, N. Pindoriya
Single-phase PWM AC/DC converter used for Microgrid application has been widely tested mostly using linear loads. The behavior of the converter with the linear and static/dynamic loads need to be analyzed when it is connected to the grid, particularly with the Indian house hold power supply. This paper presents simulation and experimental results to verify the behavior of PWM AC/DC converter with different loading scenarios-lighting loads, resistive loads and BLDC motor load. All experiments are performed on real time digital simulator test bed, to evaluate the converter's performance in real time. The main focus of the study is to analyze the effects of DC and AC bus during the instants of switching and their response to the sudden load changes. Experiments are conducted on scenario based approach considering each type of load individually and at the end all the loads together. The converter parameters are chosen in such way that to have good efficiency and cost effective. The effect on line current due to improper design of converter parameters is explained in detail using simulation and experimental results. Also the bidirectional power flow capability of the converter is shown using simulation results for Indian power supply specifications.
用于微电网应用的单相PWM交/直流变换器已经进行了广泛的测试,主要使用线性负载。当转换器与电网连接时,特别是与印度家庭供电时,需要分析其在线性和静态/动态负载下的行为。本文给出了仿真和实验结果,验证了PWM AC/DC变换器在不同负载场景下的性能——照明负载、电阻性负载和无刷直流电机负载。所有实验均在实时数字仿真试验台上进行,以实时评估变换器的性能。研究的重点是分析直流母线和交流母线在切换瞬间的影响及其对负载突然变化的响应。采用基于场景的方法分别考虑每种载荷,最后将所有载荷放在一起进行试验。转换器参数的选择使其具有良好的效率和成本效益。结合仿真和实验结果,详细说明了变换器参数设计不当对线路电流的影响。通过对印度电源规格的仿真,显示了该变换器的双向潮流能力。
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引用次数: 5
Optimal placement and sizing of DG comparison of different techniques of DG placement DG的最佳放置和尺寸比较不同DG放置技术
Prabhjot Kaur, Sandeep Kaur, R. Khanna
The increasing power demand and the deficiency in generating capacities have set the way towards Distributed Generation. Distributed Generation (DG) is assuming widespread popularity owing to its potential to solve numerous issues like the power system de-regulation; meeting the rising power demand; improving voltage profile; reduction in power losses etc. The Optimum Location of DG and optimum DG Sizing are the two critical issues in the integration of DG with the electric grid because the improper placement and improper sizing of DG in power system can not only leads to the enhanced total power losses but can also damage the normal operation of power system. Optimal placement of DG units is a nonlinear optimization problem. This paper proposes a methodology to calculate the optimal location and effective optimal size. The influence of variation in location of DG with respect to the total power losses and voltage in the system is also carried out. The proposed methodology is tested on 33 bus radial distribution network. The obtained results are exhibited in graphical manner. The results achieved from the proposed methodology are paralleled with that of the exhaustive load flows.
电力需求的增长和发电能力的不足为分布式发电的发展奠定了基础。分布式发电(DG)正受到广泛的欢迎,因为它有可能解决许多问题,如电力系统放松管制;满足日益增长的电力需求;改善电压分布;减少功率损耗等。DG的最佳位置和DG的最佳尺寸是DG与电网集成的两个关键问题,因为DG在电力系统中的位置和尺寸不当不仅会导致总功率损耗增加,而且会破坏电力系统的正常运行。DG机组的优化布置是一个非线性优化问题。本文提出了一种计算最优位置和有效最优规模的方法。DG位置的变化对系统总功率损耗和电压的影响也进行了研究。在33个母线径向配电网上进行了试验。所得结果以图形方式显示。所提出方法的结果与穷举负荷流的结果是一致的。
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引用次数: 21
Extraction of blood veins from the fundus image to detect Diabetic Retinopathy 从眼底图像中提取血管以检测糖尿病视网膜病变
V. Gupta, Surya Teja D., Sanchit Gupta, P. Sengar
We have generated an algorithm which runs on the human retinal fundus image and finds out the blood veins that are in the retinal fundus image to detect the Diabetic Retinopathy disease. This is occurred usually in the Diabetic patients where there is a loss of vision if not medicated at a proper instance. We have made this to make the doctors to be more efficient about which stage the disease is in with the blood veins image that we calculate out of the Retinal fundus image.
我们生成了一种算法,该算法在人体视网膜眼底图像上运行,并找出视网膜眼底图像中的静脉来检测糖尿病视网膜病变。这通常发生在糖尿病患者,如果没有适当的药物治疗,视力会下降。我们这样做是为了让医生更有效地了解疾病的哪个阶段,通过我们从视网膜眼底图像中计算出的静脉图像。
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引用次数: 7
Arduino based low cost active dual axis solar tracker 基于Arduino的低成本主动双轴太阳能跟踪器
T. Kaur, Shraiya Mahajan, S. Verma, Priyanka, J. Gambhir
Sun is an abundant source of energy and this solar energy can be harnessed successfully using solar photovoltaic cells and photovoltaic effect to convert solar energy into electrical energy. But the conversion efficiency of a normal PV cell is low. One of the main reason for this is that the output of PV cell is dependent directly on the light intensity and with the position of the sun in the sky changing continuously from time to time; the absorption efficiency of an immobile solar panel would be significantly less at certain time of the day and year; for the solar photovoltaic cells are maximum productive when they are perpendicular to the sun and less productive otherwise. So to maximize the energy generation and improve the efficiency; solar trackers come into play. This paper presents the design and construction of an inexpensive active dual-axis solar tracking system for tracking the movement of the sun so as to get maximum power from the solar panels as they follow the sun. It uses Light Dependent Resistors to sense the position of the sun which is communicated to a Arduino Uno microcontroller which then commands a set of two servo-motors to re-orient the panel in order to stay perpendicular to the sun rays. The design was constructed successfully and tested using Lab View to determine the improvements in efficiency. Evaluation results show that the new system performs 13.44% better than the immobile solar PV system.
太阳是一种丰富的能源,利用太阳能光伏电池和光伏效应可以成功地将太阳能转化为电能。但普通光伏电池的转换效率较低。其中一个主要原因是光伏电池的输出直接依赖于光强,并且随着太阳在天空中的位置不断变化;固定太阳能电池板的吸收效率在一天和一年中的某些时间会显著降低;对于太阳能光伏电池来说,当它们垂直于太阳时,效率最高,否则效率较低。从而最大限度地发电,提高效率;太阳追踪器开始发挥作用。本文介绍了一种廉价的主动双轴太阳能跟踪系统的设计和构造,用于跟踪太阳的运动,使太阳能电池板在跟随太阳时获得最大的功率。它使用光依赖电阻来感知太阳的位置,这是传达给Arduino Uno微控制器,然后命令一组两个伺服电机重新定向面板,以保持垂直于太阳光线。该设计已成功构建并使用Lab View进行了测试,以确定效率的改进。评估结果表明,新系统比固定式太阳能光伏系统性能提高13.44%。
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引用次数: 41
Design and implementation of a prototype DC photovoltaic power system simulator with Maximum Power Point Tracking system 具有最大功率点跟踪系统的直流光伏发电系统仿真样机的设计与实现
V. Rajguru, K. Gadge, Soham Karyakarte, Supriya Kawathekar, Vishnu P. Menon
In future, solar energy will be an important energy source as it is renewable in nature. A solar cell being the smallest energy unit of any solar power system, an array of such solar cells constitutes a solar panel. The output of a solar panel follows a nonlinear current voltage characteristic which depends primarily on irradiance, temperature and load connected. A distinct point for fixed atmospheric conditions for which maximum power is extracted from the panel is the Maximum Power Point(MPP). A number of constraints are associated with installing, operating and thus studying the behaviour and designing a power system for solar panels. This paper thus discusses about the design of prototype indoor solar panel simulator along with the design of a Maximum Power Point Tracking (MPPT) System. Using this design efficiently, a large range of panels for various dynamic atmospheric conditions can be simulated. Various MPPT algorithms can be tested and analysed for their performance in actual solar power systems. The entire system consists of DC DC converter, a driver for the MOSFET, Voltage and Current Sensors, microcontroller, a DC programmable source and GUI on Visual Basic. Selection for each component is explained. The system sequential operation, flow of power and communication between various components is elaborated. Lastly, implementation results are discussed where Incremental Conductance MPPT algorithm is tested for a sample IV curve and thus Maximum Power Point is tracked.
在未来,太阳能将是一种重要的能源,因为它是可再生的。太阳能电池是任何太阳能发电系统中最小的能量单位,一组这样的太阳能电池构成了太阳能电池板。太阳能电池板的输出遵循非线性电流电压特性,主要取决于辐照度,温度和连接的负载。在固定大气条件下,从面板中提取最大功率的一个明显点是最大功率点(MPP)。安装、操作和研究太阳能电池板的性能以及设计太阳能电池板的电力系统都有很多限制。因此,本文讨论了室内太阳能板模拟器的原型设计以及最大功率点跟踪系统的设计。利用这种设计,可以有效地模拟各种动态大气条件下的大范围面板。各种MPPT算法可以在实际的太阳能发电系统中进行测试和分析。整个系统由直流变换器、MOSFET驱动、电压和电流传感器、微控制器、直流可编程源和Visual Basic图形用户界面组成。解释了每个组件的选择。阐述了系统的顺序操作、电源流向和各部件之间的通信。最后,讨论了实现结果,其中增量电导MPPT算法对样本IV曲线进行了测试,从而跟踪了最大功率点。
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引用次数: 5
Modelling and control of Active Clamp Forward Converter with Current Doubler Rectifier 带倍流整流器的有源箝位正激变换器的建模与控制
V. Rajguru, Rohit R. Rokade, B. Choudhary
Small signal mathematical model, Open loop frequency response and closed loop analysis of Active Clamp Forward Converter with Current Doubler Rectifier (ACFC-CDR) in PSIM & MATLAB are presented in this paper. Forward converter includes a transformer to achieve galvanic isolation and to transfer energy. This converter consist of active clamp circuit to reveal energy stored in magnetizing and leakage inductance of transformer. Presence of clamp circuit in ACFC-CDR exhibits fifth order power stage dynamics. For full wave rectification, Current Doubler Rectifier(CDR) technique is implemented to the secondary side of transformer. State space averaging technique is applied to obtain a mathematical model of a power stage to analyze frequency response of open loop ACFC-CDR. Verification of mathematical model is achieved by comparing the results of open loop system in PSIM and MATLAB-Simulink also. Closed loop system analysis using Type III compensator.
本文给出了基于PSIM和MATLAB的有源箝位加倍流整流变换器(ACFC-CDR)的小信号数学模型、开环频率响应和闭环分析。正激变换器包括一个变压器,以实现电流隔离和传递能量。该变换器由有源钳位电路组成,以显示储存在磁化中的能量和变压器的漏感。ACFC-CDR中钳位电路的存在表现为五阶功率级动力学。为了实现全波整流,在变压器二次侧采用了倍流整流技术。采用状态空间平均技术建立了功率级的数学模型,分析了开环ACFC-CDR的频率响应。通过比较PSIM和MATLAB-Simulink中开环系统的仿真结果,对数学模型进行了验证。采用III型补偿器的闭环系统分析。
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引用次数: 2
期刊
2016 IEEE 1st International Conference on Power Electronics, Intelligent Control and Energy Systems (ICPEICES)
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