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A new approach to minimize the cogging torque of axial flux pmg for under water applications 一种减小水下轴向磁通钻齿转矩的新方法
2009 Canadian Conference on Electrical and Computer Engineering Pub Date : 2009-05-03 DOI: 10.1109/CCECE.2009.5090309
S. Moury, M. Iqbal
{"title":"A new approach to minimize the cogging torque of axial flux pmg for under water applications","authors":"S. Moury, M. Iqbal","doi":"10.1109/CCECE.2009.5090309","DOIUrl":"https://doi.org/10.1109/CCECE.2009.5090309","url":null,"abstract":"The rotor of a typical water current turbine rotates below 100 rpm. In conventional hydro installation the generator is coupled to the turbine via a gear box, so that it can typically rotate at a speed of 1500 or 1800 rpm. The water current turbine can be simplified by eliminating the gear box and by using a low-speed generator, the rotor of which rotates at the same speed as the rotor of the turbine. The main design challenge for a direct driven Permanent Magnet Generator (PMG) is to minimize the cogging torque. Cogging torque is an inherent characteristic of PMGs and is caused by the geometry of the generator. In this paper a new approach to minimize the PMG cogging torque is proposed. Basic design of a low cogging torque generator is also provided.","PeriodicalId":153464,"journal":{"name":"2009 Canadian Conference on Electrical and Computer Engineering","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117271229","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
Error concealment for JPEG-coded image transmission overwireless links 无线链路上jpeg编码图像传输的错误隐藏
2009 Canadian Conference on Electrical and Computer Engineering Pub Date : 2009-05-03 DOI: 10.1109/CCECE.2009.5090179
Alireza Kenarsari-Anhari, L. Lampe
{"title":"Error concealment for JPEG-coded image transmission overwireless links","authors":"Alireza Kenarsari-Anhari, L. Lampe","doi":"10.1109/CCECE.2009.5090179","DOIUrl":"https://doi.org/10.1109/CCECE.2009.5090179","url":null,"abstract":"A robust error concealment (EC) scheme for transmission of JPEG-coded images over error-pronewireless networks is proposed. It incorporates data-hiding as a correction element along with spatial redundancy of natural images to reconstruct lost portions of a received image signal. To handle burst packet-loss conditions experienced in wireless transmission links, the use of interleaving and interleaved forward error correction is studied. In this context, the trade-off between complexity and quality of error concealment is investigated. We provide simulative evidence that the proposed EC scheme improves over state-of-the-art algorithms known from the literature.","PeriodicalId":153464,"journal":{"name":"2009 Canadian Conference on Electrical and Computer Engineering","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116810762","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
Dynamic modeling and simulation of alkaline type electrolyzers 碱性电解槽的动态建模与仿真
2009 Canadian Conference on Electrical and Computer Engineering Pub Date : 2009-05-03 DOI: 10.1109/CCECE.2009.5090222
Md. Maruf-ul-Karim, M. Iqbal
{"title":"Dynamic modeling and simulation of alkaline type electrolyzers","authors":"Md. Maruf-ul-Karim, M. Iqbal","doi":"10.1109/CCECE.2009.5090222","DOIUrl":"https://doi.org/10.1109/CCECE.2009.5090222","url":null,"abstract":"Electrolyzers are essential part of power systems where the energy storage is in the form of hydrogen. Electrolyzers are used in remote hybrid power systems. In this research a dynamic model of an alkaline type electrolyzer has been developed. The MATLAB/ Simulink software has been used to form the generalized dynamic model, which can be integrated with different kinds of renewable energy systems. This paper describes the operation of electrolyzer cell by the electrochemical and thermal models and presents the simulation results graphically. This model is also suitable for steady state and transient analysis of a remote power system.","PeriodicalId":153464,"journal":{"name":"2009 Canadian Conference on Electrical and Computer Engineering","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124022480","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: 12
Classification of english phrases and SMS text messages using Bayes and Support Vector Machine classifiers 使用贝叶斯和支持向量机分类器对英语短语和短信进行分类
2009 Canadian Conference on Electrical and Computer Engineering Pub Date : 2009-05-03 DOI: 10.1109/CCECE.2009.5090166
J. Maier, K. Ferens
{"title":"Classification of english phrases and SMS text messages using Bayes and Support Vector Machine classifiers","authors":"J. Maier, K. Ferens","doi":"10.1109/CCECE.2009.5090166","DOIUrl":"https://doi.org/10.1109/CCECE.2009.5090166","url":null,"abstract":"This paper performs a comparative analysis of several different types of SMS text classifiers: weight enhanced Multinomial naive Bayes, Poisson naive Bayes, and L2-loss Support Vector Machine. The effects of preprocessing and incorporating additional features on the classifiers were examined. The preliminary experimental results show that the use of preprocessing and incorporating additional features produced no significant gain or loss in classification efficiency. However the feature space used by the classification methods decreased, which could be beneficial for resource limited environments. In addition the solutions to the SMS text classification may be applied to other problems, like the classification of English sentences. Our collection of text messages may not be statistically significant, because of very limited sources for text messages.","PeriodicalId":153464,"journal":{"name":"2009 Canadian Conference on Electrical and Computer Engineering","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129683800","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
Sensor beamforming with distributed mobile elements in a wireless sensor network 无线传感器网络中具有分布式移动元件的传感器波束形成
2009 Canadian Conference on Electrical and Computer Engineering Pub Date : 2009-05-03 DOI: 10.1109/CCECE.2009.5090146
W. Lintz, J. McEachen, M. Tummala
{"title":"Sensor beamforming with distributed mobile elements in a wireless sensor network","authors":"W. Lintz, J. McEachen, M. Tummala","doi":"10.1109/CCECE.2009.5090146","DOIUrl":"https://doi.org/10.1109/CCECE.2009.5090146","url":null,"abstract":"Sensor array beamforming performance using independently mobile antennas connected through a wireless sensor network is analyzed where a performance metric is proposed enabling mitigation of the perturbation of array factor formation caused by dynamic node positions. Wireless networking has expanded array design possibilities to include wirelessly connected elements; however, static positioning of elements remains central to determination and application of weights necessary for coherent array beam formation. Wireless networks allow for participant mobility, but applied weights must be reformed for each position update in order to maintain target focus. While deterministic motion allows easy weight translation, random element motion requires significant network energy to reform weights through position updates. The relationship between array factor and stochastic element motion is analyzed. A relationship is developed between motion and array factor magnitude probability towards the intended target vector. The relationship proposed is shown to be assessable and useful for reducing network traffic and processing overhead and while producing operationally acceptable gain towards the target. The result compares favorably against a constant position updating model in terms of sensor energy usage across the network.","PeriodicalId":153464,"journal":{"name":"2009 Canadian Conference on Electrical and Computer Engineering","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129994260","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: 11
Web based remote operations on inverters 基于Web的逆变器远程操作
2009 Canadian Conference on Electrical and Computer Engineering Pub Date : 2009-05-03 DOI: 10.1109/CCECE.2009.5090133
Dutta Gupta Tirtho, Liuchen Chang
{"title":"Web based remote operations on inverters","authors":"Dutta Gupta Tirtho, Liuchen Chang","doi":"10.1109/CCECE.2009.5090133","DOIUrl":"https://doi.org/10.1109/CCECE.2009.5090133","url":null,"abstract":"During the late 1990's, a lot of research focused on the area of remote operations for far reaching applications in commercial appliances such as routers, mobile telecommunication devices, and web servers. The field of power generation is still in its initial phases, including hard wiring the control system directly to a machine, allowing the installation of the machine's control firmware from a far-off location. Existing internet based controller modules and remote installation methodologies like updating router firmware for routers and remotely updating web server firmware were investigated. The performance of each method was compared with the others, and based on this, a novel cost effective system was designed which is capable of controlling, monitoring and installing inverter firmware from a remote location with the use of internet.","PeriodicalId":153464,"journal":{"name":"2009 Canadian Conference on Electrical and Computer Engineering","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130579181","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
Pipelined minutiae extraction from fingerprint images 指纹图像的流水线细节提取
2009 Canadian Conference on Electrical and Computer Engineering Pub Date : 2009-05-03 DOI: 10.1109/CCECE.2009.5090128
E. Alibeigi, Majid Toghiani Rizi, Parisa Behnamfar
{"title":"Pipelined minutiae extraction from fingerprint images","authors":"E. Alibeigi, Majid Toghiani Rizi, Parisa Behnamfar","doi":"10.1109/CCECE.2009.5090128","DOIUrl":"https://doi.org/10.1109/CCECE.2009.5090128","url":null,"abstract":"Fingerprint identification is an important biometric technique for personal identification. Most of the automatic systems of fingerprint recognition are based on matching of fingerprint minutiae. In this paper, we described a method that reduces the complexity of computations and extract the minutiae from binary image with appropriate speed. In this paper a new hardware scheme is presented which is based on pipelined architecture in order to real-time minutiae extraction. Simulations and implementation result shows the operation and accuracy of suggested method.","PeriodicalId":153464,"journal":{"name":"2009 Canadian Conference on Electrical and Computer Engineering","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130748962","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: 11
Interoperability across implementation: The libdrdc data standards library 跨实现的互操作性:libdrdc数据标准库
2009 Canadian Conference on Electrical and Computer Engineering Pub Date : 2009-05-03 DOI: 10.1109/CCECE.2009.5090221
David Erickson
{"title":"Interoperability across implementation: The libdrdc data standards library","authors":"David Erickson","doi":"10.1109/CCECE.2009.5090221","DOIUrl":"https://doi.org/10.1109/CCECE.2009.5090221","url":null,"abstract":"This paper presents the libdrdc data standards library containing internal nomenclature, definitions, units of measure, coordinate reference frames, and representations for use in autonomous systems research. This library is a configurable, portable C / C++ / Object Oriented C library developed to be independent of software middleware, system architecture, processor, or operating system. It is designed to use the automatically-tuned linear algebra suite (ATLAS) and Basic Linear Algebra Suite (BLAS) and port to firmware and software. The library goal is to unify data collection and representation for various systems and communication protocols and to provide a common Application Programmer Interface (API) for research projects at all scales. The library supports multi-platform development and currently works on Windows, Unix, GNU/Linux, and Real-Time Executive for Multiprocessor Systems (RTEMS). This library is available online under the Lesser GNU Public License (LGPL) version 2.1.","PeriodicalId":153464,"journal":{"name":"2009 Canadian Conference on Electrical and Computer Engineering","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130249928","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
Cogging torque of permanent magnet electric machiens: An overview 永磁电机齿槽转矩:综述
2009 Canadian Conference on Electrical and Computer Engineering Pub Date : 2009-05-03 DOI: 10.1109/CCECE.2009.5090310
Zhenhong Guo, Liuchen Chang, Yaosuo Xue
{"title":"Cogging torque of permanent magnet electric machiens: An overview","authors":"Zhenhong Guo, Liuchen Chang, Yaosuo Xue","doi":"10.1109/CCECE.2009.5090310","DOIUrl":"https://doi.org/10.1109/CCECE.2009.5090310","url":null,"abstract":"Permanent magnet electric machine (PMEM) is widely employed in variety of applications because of their numerous advantages beyond other electric machines. Cogging torque is caused by the reluctance change between the stator teeth and magnet poles on the rotor, this is an inherent characteristic of PMEM. In many applications, cogging torque has become one important design specifications and consideration issues of PMEM. Study of cogging torque calculation methods and the cogging torque reduction measures are becoming more and more important nowadays. In this paper, the cogging torque calculation methods are introduced, and various practical cogging torque reduction measures are studied and compared.","PeriodicalId":153464,"journal":{"name":"2009 Canadian Conference on Electrical and Computer Engineering","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129031905","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: 23
Power system stability enhancement by designing PSS and SVC parameters coordinately using RCGA 利用随机遗传算法协调设计PSS和SVC参数，提高电力系统稳定性
2009 Canadian Conference on Electrical and Computer Engineering Pub Date : 2009-05-03 DOI: 10.1109/CCECE.2009.5090197
A. Khodabakhshian, R. Hooshmand, R. Sharifian
{"title":"Power system stability enhancement by designing PSS and SVC parameters coordinately using RCGA","authors":"A. Khodabakhshian, R. Hooshmand, R. Sharifian","doi":"10.1109/CCECE.2009.5090197","DOIUrl":"https://doi.org/10.1109/CCECE.2009.5090197","url":null,"abstract":"Power System Stabilizers are used to generate supplementary control signals for the excitation system in order to damp the low-frequency power system oscillations. Although Static VAR Compensators (SVC) are basically used for voltage control of long distance bulk power transmission lines, they can be also utilized to improve the dynamic stability of the power system by using a supplementary control loop. However, uncoordinated design of SVC and PSS may cause destabilizing interaction. In order to enhance power system dynamic stability this paper presents a new method to design both PSS and SVC parameters coordinately using real code genetic algorithm. Simulation results of multi-machine system confirm the advantage of using this method.","PeriodicalId":153464,"journal":{"name":"2009 Canadian Conference on Electrical and Computer Engineering","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126781791","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: 10
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