2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)最新文献_第8页

Human fallen pose detection by using feature selection and a generative model 基于特征选择和生成模型的人体跌倒姿态检测

2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC) Pub Date : 2017-11-01 DOI: 10.1109/ROPEC.2017.8261672

Carolina Maldonado-Mendez, Ana Luisa Solís, H. Rios-Figueroa, A. Marín-Hernández

引用次数: 3

Finite element analysis of distribution transformer under harmonics condition: A review 谐波条件下配电变压器有限元分析综述

2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC) Pub Date : 2017-11-01 DOI: 10.1109/ROPEC.2017.8261587

Sohail Khan, R. Escarela-Perez, J. C. Olivares-Galvan, V. M. Jimenez-Mondragon, F. Espino-cortes

{"title":"Finite element analysis of distribution transformer under harmonics condition: A review","authors":"Sohail Khan, R. Escarela-Perez, J. C. Olivares-Galvan, V. M. Jimenez-Mondragon, F. Espino-cortes","doi":"10.1109/ROPEC.2017.8261587","DOIUrl":"https://doi.org/10.1109/ROPEC.2017.8261587","url":null,"abstract":"The modern world is moving towards the smart grids and increased use of electronic loads. The realization of smart grid technology is the increased use of distributed energy resources, introducing new intelligent, communication and control systems that are mostly electronic circuits. The issues associated with this technology are bi-directional flow of power flow, increased harmonic emissions, direct current offsets and unbalances, voltage variation and switching transients. The increased usage of electronic loads at distribution level are generating harmonics, which in turn increases power losses in the transformers and cause pre-mature damage. These loads mostly inject the odd harmonics in the distribution system, resulting in the temperature rise of the transformer. It causes accelerated aging of transformer thereby called the attention of manufacturers and researchers to develop the procedures for enhancing the system reliability. In the literature, several methods have been proposed for calculating losses and derating the transformer such as experimental, IEEE recommended, analytical and Finite Element Method (FEM). This paper reviews the finite element analysis of distribution transformer under harmonics condition. The losses associated with harmonics, modeling and derating of transformer are the topics included in this paper. It is found that the main focus is paid on derating and losses calculation of the transformer for a percentage of harmonic contents.","PeriodicalId":260469,"journal":{"name":"2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)","volume":"139 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128475885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Evaluation of complementarity of wind and solar energy resources over Mexico using an image processing approach 利用图像处理方法评价墨西哥风能和太阳能资源的互补性

2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC) Pub Date : 2017-11-01 DOI: 10.1109/ROPEC.2017.8261637

Miguel A. Vega-Sánchez, Paulina D. Castañeda-Jiménez, R. Peña-Gallardo, Antonio Ruiz-Alonso, J. Morales-Saldaña, E. Palacios-Hernandez

引用次数: 15

Experimental validation for an open-loop LCLC output filter buck converter 开环LCLC输出滤波器降压变换器的实验验证

2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC) Pub Date : 2017-11-01 DOI: 10.1109/ROPEC.2017.8261650

J. M. Sosa, E. D. Silva-Vera, G. Vázquez, G. Escobar, P. Martinez‐Rodriguez

引用次数: 2

Design of a LED-based solar simulator for energy harvesting applications 用于能量收集应用的基于led的太阳能模拟器的设计

2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC) Pub Date : 2017-11-01 DOI: 10.1109/ROPEC.2017.8261661

C. Caballero, Rafael Rodríguez Ponce, F. Muñoz

{"title":"Design of a LED-based solar simulator for energy harvesting applications","authors":"C. Caballero, Rafael Rodríguez Ponce, F. Muñoz","doi":"10.1109/ROPEC.2017.8261661","DOIUrl":"https://doi.org/10.1109/ROPEC.2017.8261661","url":null,"abstract":"In this paper, design considerations for a low cost, site-specific solar simulator with only white LED emitters as light source are presented, harnessing the low dependence of crystalline solar cells on spectral distribution, which allows a low complexity design. Although several solar-based energy harvesting systems have been reported on different publications, the evaluation of their performance has been accomplished under different outdoor conditions that largely affect the results, making difficult to reproduce results, achieve an objective comparison and predict minimum conditions for reliable operation under different operation scenarios. As an alternative for controlled indoor testing, the use of solar simulators is proposed; nevertheless, typical commercial solar simulators are costly, complex and mainly designed for testing photovoltaic devices under simulated and ideal clear-sky standards, such as AM 1.5G, which differs from real-life outdoor conditions, since solar irradiance is highly dependent on weather conditions and geographical location: The proposed design is aimed for testing devices under controlled and close to real conditions.","PeriodicalId":260469,"journal":{"name":"2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)","volume":"143 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115905572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Speaker identification through spectral entropy analysis 基于谱熵分析的说话人识别

2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC) Pub Date : 2017-11-01 DOI: 10.1109/ROPEC.2017.8261607

A. Camarena-Ibarrola, F. Luque, Edgar Chávez

引用次数: 6

Noise mitigation in voltage and current waveforms in harmonic distortion estimation 谐波失真估计中电压和电流波形的噪声抑制

2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC) Pub Date : 2017-11-01 DOI: 10.1109/ROPEC.2017.8261628

Ismael Molina-Moreno, A. Medina, R. Cisneros-Magaña, O. Anaya‐Lara

{"title":"Noise mitigation in voltage and current waveforms in harmonic distortion estimation","authors":"Ismael Molina-Moreno, A. Medina, R. Cisneros-Magaña, O. Anaya‐Lara","doi":"10.1109/ROPEC.2017.8261628","DOIUrl":"https://doi.org/10.1109/ROPEC.2017.8261628","url":null,"abstract":"Power quality deals with waveform of sine voltage. Good power quality is supplied by utilities when a perfect sine waveform is delivered. However, several adverse phenomena negatively affect the power quality, e.g. harmonic currents injected to the network. Hence, voltage and current waveforms are distorted. In order to obtain the harmonic content in voltage and current waveforms, they are captured using data acquisition systems. Unfortunately, data can be contaminated by noise. This paper analyzes how affects this noise to determine the harmonic content by an algorithm designed for this purpose such as the Fast Fourier Transform, among others, and proposes an algorithm based on moving average filter to mitigate these adverse effects. The proposed method has been tested using the modified IEEE 14 bus test system. The results show that the harmonic content obtained from low noisy voltage and current waveforms present a considerable error in harmonics of low magnitude; hence, a procedure is necessary to mitigate the noise in contaminated measurements, before they are used to obtain the harmonic content or to assess the time domain state estimation. The results suggest that by using the proposed method, the noise in measurements can be mitigated to low values, thus improving the accuracy of the harmonic content estimation.","PeriodicalId":260469,"journal":{"name":"2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130095786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Application of fault location methods in distribution circuits with SCADA 故障定位方法在SCADA配电线路中的应用

2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC) Pub Date : 2017-11-01 DOI: 10.1109/ROPEC.2017.8261652

Abimael Rangel-Damián, E. Melgoza-Vázquez, H. Ruiz-Paredes

{"title":"Application of fault location methods in distribution circuits with SCADA","authors":"Abimael Rangel-Damián, E. Melgoza-Vázquez, H. Ruiz-Paredes","doi":"10.1109/ROPEC.2017.8261652","DOIUrl":"https://doi.org/10.1109/ROPEC.2017.8261652","url":null,"abstract":"Fault location in electric distribution systems has been a subject of interest for a long time, due to its relevance for improving service continuity and reducing response time when a power interruption occurs. In many cases, electric companies invest heavily to modernize distribution systems, including substations and networks, either by replacing obsolete electrical equipment or by adding modern equipment. The information that this new technology can provide through communication channels to the Control Center in the company's SCADA (Supervisory Control and Data Acquisition) can be used along with fault localization methods to provide a fault distance estimation which can be useful for maintenance personnel to locate and repair the problem faster. This paper shows a study case prepared using the IEEE 34 node test feeder to reveal how the information available in the electrical equipment, such as voltage and current measurements, can be introduced in an impedance-based algorithm for fault location, improving performance if we consider equipment not only at the substation but along the mainline of the feeder.","PeriodicalId":260469,"journal":{"name":"2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127960330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

ISLanD: An informatics intelligent system to support the language development of children from 4 to 5 years 岛:一个信息学智能系统，支持4至5岁儿童的语言发展

2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC) Pub Date : 2017-11-01 DOI: 10.1109/ROPEC.2017.8261597

E. Bernal-Merchán, P. Suquilanda-Cuesta, C. Espinoza-Fajardo, A. León-Pesántez, Y. Robles-Bykbaev, V. Robles-Bykbaev, D. Quisi-Peralta

{"title":"ISLanD: An informatics intelligent system to support the language development of children from 4 to 5 years","authors":"E. Bernal-Merchán, P. Suquilanda-Cuesta, C. Espinoza-Fajardo, A. León-Pesántez, Y. Robles-Bykbaev, V. Robles-Bykbaev, D. Quisi-Peralta","doi":"10.1109/ROPEC.2017.8261597","DOIUrl":"https://doi.org/10.1109/ROPEC.2017.8261597","url":null,"abstract":"Language constitutes one of the most important mainstays in cognitive, social and psychological development of children. However, nowadays an important percentage of children without disabilities present communication disorders such as dyslalia, speech disorders, dysglosia, among many others. Likewise, in developing countries it is difficult to provide personalized rehabilitation services for those children due the lack of personnel, large number of students per classroom or lack of technologies to support activities in the schools or at home. For these reasons, in this paper we present an intelligent system to support the rehabilitation and development language skills in children from 4 to 5 years. Our approach relies on data mining techniques (clustering) and ludic activities. The system was validated with 60 children and 25 students of initial education career. The results are encouraging given that show a high interest for using the application in both side, teachers and children.","PeriodicalId":260469,"journal":{"name":"2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124531969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Robust laser speckle contrast images suitable for blood vessel visualization 鲁棒激光散斑对比度图像适合血管可视化

2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC) Pub Date : 2017-11-01 DOI: 10.1109/ROPEC.2017.8261663

J. R. Velázquez-González, H. Peregrina-Barreto, J. Rangel-Magdaleno, J. Ramirez-San-Juan

{"title":"Robust laser speckle contrast images suitable for blood vessel visualization","authors":"J. R. Velázquez-González, H. Peregrina-Barreto, J. Rangel-Magdaleno, J. Ramirez-San-Juan","doi":"10.1109/ROPEC.2017.8261663","DOIUrl":"https://doi.org/10.1109/ROPEC.2017.8261663","url":null,"abstract":"Laser speckle contrast imaging (LSCI) is an optical technique capable for blood flow analyzing based on local speckle contrast. In general, a CCD camera combined with a simple optical arrangement allows to obtain blood flow information. Unfortunately, there are important limitations in the case of deep blood vessels (about 300μm). In this case, it is difficult to obtain blood vessel information since speckle patterns inside the images are sparse. In this work, we propose an iterative spatiotemporal anisotropic filtering approach which, aims to improve the performance under deep vessels images. This approach consists in two different filters combined with an iterative behavior and a post processing step. First, a temporal filter computes the contrast gradient (K) for all pixels within the input image. Then, contrast directions are computed. Finally, a spatiotemporal filter analyzes the blood flow behavior based on the contrast directions. Experimental results are encouraging, the proposed approach improves the performance under deep vessels, compared with previous work. Furthermore, these results (which were obtained at different samples) demonstrated that it is possible to improve the global performance by using an iterative behavior.","PeriodicalId":260469,"journal":{"name":"2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122953032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1