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2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC)最新文献

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On the use of proximity indexes for isolated word recognition 邻近索引在孤立词识别中的应用
2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC) Pub Date : 2013-11-01 DOI: 10.1109/ROPEC.2013.6702720
Jose Martin Ruiz Perez, A. Camarena-Ibarrola
{"title":"On the use of proximity indexes for isolated word recognition","authors":"Jose Martin Ruiz Perez, A. Camarena-Ibarrola","doi":"10.1109/ROPEC.2013.6702720","DOIUrl":"https://doi.org/10.1109/ROPEC.2013.6702720","url":null,"abstract":"An isolated word recognition system with a small dictionary may perform sequencial search, that is, compare the query utterance with each and every single one in the dictionary. However, when dealing with dictionaries made out of thousands of words, sequencial search is no longer a valid strategy since we would end up with such a slow recognition system that would surely be of no practical use. One approach to solve this problem is the use of proximity indexes so that the most similar word can be found quickly. The question that inmediately arises is: What proximity index is the ideal one for our purpose?. In this paper we compare several proximity indexes in their ability to find the most similar word to the query utterance among those included in the dictionary using less time for that purpose. According to our experiments a permutant-based index requires less distance evaluations at searching to find the nearest neighbor so it is faster than the pivot-based indexes included in our experiments such as the Fixed Query Array (FQA), the Burkhard-Keller Tree (BKT), the Fixed Query Tree (FQT) and the Fixed Height Fixed Query Tree (FHFQT).","PeriodicalId":307120,"journal":{"name":"2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126440623","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
Assessment of the structural changes impact in the Zitacuaro zone of the CFE-DCO using DEA 应用DEA评价CFE-DCO Zitacuaro带结构变化影响
2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC) Pub Date : 2013-11-01 DOI: 10.1109/ROPEC.2013.6702746
A. Avalos, C. Pina, R. Borrayo, A. Guzman, Z. Jimenez
{"title":"Assessment of the structural changes impact in the Zitacuaro zone of the CFE-DCO using DEA","authors":"A. Avalos, C. Pina, R. Borrayo, A. Guzman, Z. Jimenez","doi":"10.1109/ROPEC.2013.6702746","DOIUrl":"https://doi.org/10.1109/ROPEC.2013.6702746","url":null,"abstract":"Identifying oportunity areas to improve electric networks operation is a continuous task which has to be done in a continuous manner. Within the Mexican Electrical Utility distribution area several indicators are used which help us to learn the performance in each one of the divisions and zones across the country such as: system average interruption duration index (SAIDI), line kilometers, users number, losses and so on. Apropriate decision making of actions to improve these indicators allows, by a continuous evaluation of them, to measure the impact and efectiviness of such actions. However, there exist methodologies which allow to assess their impact and, additionally, they identify those indicators which performs the worst and therefore are the ones which directly represent and opportunity area to improve. Tools such as Data Envelopment Analysis (DEA) and Stochastic Frontier are used by regulator organisms wideworld for such assessment tasks. In this work we have used DEA to analyze the evolution of those indicators when structural changes in the Zitacuaro zone, at the distribution circuit level, took place. The results show the positive impact of these actions as well as the identification of opportunity areas to improve.","PeriodicalId":307120,"journal":{"name":"2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131040736","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: 0
Single loop, zero reactive power in dual-active-bridge converters 双有源桥式变换器的单回路零无功功率
2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC) Pub Date : 2013-11-01 DOI: 10.1109/ROPEC.2013.6702757
J. Rodríguez, V. Venegas R, E. Moreno-Goytia, F. H. Villa Vargas, Edgar D. Castaneda S
{"title":"Single loop, zero reactive power in dual-active-bridge converters","authors":"J. Rodríguez, V. Venegas R, E. Moreno-Goytia, F. H. Villa Vargas, Edgar D. Castaneda S","doi":"10.1109/ROPEC.2013.6702757","DOIUrl":"https://doi.org/10.1109/ROPEC.2013.6702757","url":null,"abstract":"This paper mathematically models and analyses various control methods for Dual-Active-Bridge (DAB) converters focusing in: its performance to reduce the reactive power to zero while keeping the load current without discontinuities for any range of operation; minimizing the number of PI feedback loops to a single one; the reduction of IRMS and ripple voltage; reduction of losses, altogether compared to the conventional SPSC method. After comparations a novel control scheme using a single PI feedback-loop for abating reactive power is proposed. The simulation, mathematical model of the converter and the experimental results obtained from the laboratory-scale version of the DAB controller shows the performance of the proposal and its relative advantages.","PeriodicalId":307120,"journal":{"name":"2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126582596","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
A fitness case strategy in genetic programming to improve system identification 遗传规划中的适应度案例策略以提高系统辨识
2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC) Pub Date : 2013-11-01 DOI: 10.1109/ROPEC.2013.6702728
M. Pacheco, Mario Graff, J. Cerdá
{"title":"A fitness case strategy in genetic programming to improve system identification","authors":"M. Pacheco, Mario Graff, J. Cerdá","doi":"10.1109/ROPEC.2013.6702728","DOIUrl":"https://doi.org/10.1109/ROPEC.2013.6702728","url":null,"abstract":"This article discusses the use of genetic programming for system identification. To this end, several experiments have been realized using observations obtained from a power transformer. The proposed strategy is to maximize the likelihood of convergence when searching for the model of a particular system. A traditional strategy for system identification in Genetic Programming is to take all the observations and evaluate the process of evolution to find a system model instance. Contrary to this, the proposed methodology is based on a partial subset of the observations, and then this subset is incremented until reaching the total set of observations. Furthermore, for comparison purposes we have used Eureqa, an open genetic programming based software tool for system identification.","PeriodicalId":307120,"journal":{"name":"2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC)","volume":"14 26","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120968674","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
Wind resource assessment in the surroundings of San Luis Potosi, Mexico 墨西哥圣路易斯波托西周边地区风力资源评价
2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC) Pub Date : 2013-11-01 DOI: 10.1109/ROPEC.2013.6702748
Alonso Hernandez, R. Peña, W. Mendez, N. Visairo, C. Nuñez
{"title":"Wind resource assessment in the surroundings of San Luis Potosi, Mexico","authors":"Alonso Hernandez, R. Peña, W. Mendez, N. Visairo, C. Nuñez","doi":"10.1109/ROPEC.2013.6702748","DOIUrl":"https://doi.org/10.1109/ROPEC.2013.6702748","url":null,"abstract":"The use of alternative sources of energy addresses a series of steps to be undertaken in order to maximize its commercial exploit. This requires a set of guidelines to determine the best way in which these sources can be evaluated. This contribution focuses on the principles of wind resource assessment and the application of them for the wind energy evaluation in the surroundings of the San Luis Potosi city.","PeriodicalId":307120,"journal":{"name":"2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133174380","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: 6
Multi-objective reconfiguration of radial distribution networks considering voltage sags 考虑电压跌落的径向配电网多目标重构
2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC) Pub Date : 2013-11-01 DOI: 10.1109/ROPEC.2013.6702754
R. Tapia-Juarez, E. Espinosa-Juárez
{"title":"Multi-objective reconfiguration of radial distribution networks considering voltage sags","authors":"R. Tapia-Juarez, E. Espinosa-Juárez","doi":"10.1109/ROPEC.2013.6702754","DOIUrl":"https://doi.org/10.1109/ROPEC.2013.6702754","url":null,"abstract":"This paper focuses on the problem of multi-objective reconfiguration of distribution networks taking into account the reduction voltage sags. The proposed methodology based on genetic algorithms finds the optimal reconfiguration for networks which have a radial topology, considering the expected occurrence of voltage sags reduction and also the real power losses; furthermore, the electric distribution system is represented as a graph, and the population is generated by providing the mesh information of the system. Case studies are presented for the IEEE 69-bus test network, demonstrating the effectiveness of the implemented methodology.","PeriodicalId":307120,"journal":{"name":"2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC)","volume":"2004 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123908514","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: 7
FPGA-based real-time simulation of a full bridge-RL load SPWM inverter 基于fpga的全桥负载SPWM逆变器实时仿真
2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC) Pub Date : 2013-11-01 DOI: 10.1109/ROPEC.2013.6702755
M. Heras Cervantes, M. G. Ramirez, F. Martinez Cardenas, A. T. Anguiano, J. Correa Gómez
{"title":"FPGA-based real-time simulation of a full bridge-RL load SPWM inverter","authors":"M. Heras Cervantes, M. G. Ramirez, F. Martinez Cardenas, A. T. Anguiano, J. Correa Gómez","doi":"10.1109/ROPEC.2013.6702755","DOIUrl":"https://doi.org/10.1109/ROPEC.2013.6702755","url":null,"abstract":"This work presents a FPGA-implemented real-time simulation of a full-bridge RL load inverter, using Sinusoidal Pulse Width Modulation (SPWM). The selected methodology consist on obtaining the mathematical model of the full-bridge RL load inverter based on state equations for every switching state of the converter and then solving the set of state equations corresponding to the topological state in every integration step to obtain an accurate and deterministic response. The obtained algorithm is implemented in a real-time platform whose main characteristics are: high-performance FPGA, real-time processor and ultra-high-level programming language (graphic programming).","PeriodicalId":307120,"journal":{"name":"2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126353896","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: 3
A model of traveling wave relay 一种行波继电器模型
2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC) Pub Date : 2013-11-01 DOI: 10.1109/ROPEC.2013.6702707
B. A. Alcaide, B. Orozco, J. L. Guardado, J. Torres-Jiménez, J. Campos
{"title":"A model of traveling wave relay","authors":"B. A. Alcaide, B. Orozco, J. L. Guardado, J. Torres-Jiménez, J. Campos","doi":"10.1109/ROPEC.2013.6702707","DOIUrl":"https://doi.org/10.1109/ROPEC.2013.6702707","url":null,"abstract":"This paper presents the modeling and implementation of a traveling wave relay for transmission line protection at Extra High Voltage. The protection scheme is compounded of two algorithms; the first of them is a type D which is synchronization via GPS satellite and is used as the primary relay. The second algorithm uses a single end measurement and serves as a backup in case the primary relay fails. This second algorithm is based on a composite function which uses the ratio of the standard correlation function and a pattern recognition technique, either the Euclidean or Manhattan distance.","PeriodicalId":307120,"journal":{"name":"2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127961856","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: 0
Modeling and simulation of a propeller-engine system for Unmanned Aerial Vehicles 无人机螺旋桨发动机系统建模与仿真
2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC) Pub Date : 2013-11-01 DOI: 10.1109/ROPEC.2013.6702722
R. Martínez-Alvarado, E. E. Granda-Gutiérrez, A. Sánchez‐Orta, F. Ruiz-Sánchez
{"title":"Modeling and simulation of a propeller-engine system for Unmanned Aerial Vehicles","authors":"R. Martínez-Alvarado, E. E. Granda-Gutiérrez, A. Sánchez‐Orta, F. Ruiz-Sánchez","doi":"10.1109/ROPEC.2013.6702722","DOIUrl":"https://doi.org/10.1109/ROPEC.2013.6702722","url":null,"abstract":"In this paper we present a model of a Propeller-Engine system and a simulation analysis of its dynamics in order to estimate the total load torque produced by the aerodynamic effects of a spinning propeller attached to its rotor when it is used as a thruster in small scale Unmanned Aerial Vehicles. The contribution is twofold: first, we obtain the model of a composed propeller-engine system introducing the mechanical load of a turning propeller to the electro-mechanical properties of a Brushless Direct Current motor, to determine the total thrust and the load torque with respect to its angular velocity, and then, we present the results of a numerical simulation of its dynamical behavior under hovering conditions. The aim of this work is to establish the basis for new developments in the area of control to improve the stability of flight in Unmanned Aerial Vehicles avoiding drifting.","PeriodicalId":307120,"journal":{"name":"2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128601927","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
Comparative analysis of high-gain observers applied to a distillation column 应用于精馏塔的高增益观测器的比较分析
2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC) Pub Date : 2013-11-01 DOI: 10.1109/ROPEC.2013.6702743
M. Heras-Cervantes, A. Téllez-Anguiano, M. C. G. Garcia Ramirez, J. Gutiérrez-Gnecchi, O. Fernandez-Munoz, V. Olivares-Peregrino
{"title":"Comparative analysis of high-gain observers applied to a distillation column","authors":"M. Heras-Cervantes, A. Téllez-Anguiano, M. C. G. Garcia Ramirez, J. Gutiérrez-Gnecchi, O. Fernandez-Munoz, V. Olivares-Peregrino","doi":"10.1109/ROPEC.2013.6702743","DOIUrl":"https://doi.org/10.1109/ROPEC.2013.6702743","url":null,"abstract":"This paper presents a comparative analysis of two types of high-gain observers used to estimate the molar compositions in a distillation column for a binary mixture (Ethanol-Water) using the temperature measurements in the plates. These observers are selected according to the system characteristics: triangular structure, locally Lipchitz and bounded states. The aim is to select the high-gain observer best suited to develop efficient fault detection systems to help prevent accidents and improve the safety of the user and the process, maintaining a balance between reliability, efficiency and ease of implementation.","PeriodicalId":307120,"journal":{"name":"2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124047858","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
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