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2007 International Conference on Electrical Engineering最新文献

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Parameter Estimation Optimization Based on Genetic Algorithm Applied to DC Motor 基于遗传算法的直流电动机参数估计优化
2007 International Conference on Electrical Engineering Pub Date : 2007-04-11 DOI: 10.1109/ICEE.2007.4287313
M. Lankarany, A. Rezazade
{"title":"Parameter Estimation Optimization Based on Genetic Algorithm Applied to DC Motor","authors":"M. Lankarany, A. Rezazade","doi":"10.1109/ICEE.2007.4287313","DOIUrl":"https://doi.org/10.1109/ICEE.2007.4287313","url":null,"abstract":"Thin paper proposed the application of genetic algorithm optimization in estimating the parameters of dynamic state of DC motor. LSE estimation is considered as a convenient method for parameter estimation, in comparison with this proposed method. Despite of LSE estimation that is based on the linearity of error function due to parameters, GA method can easily identify unknown parameters by minimizing the sum of squared errors. GA is imported in comparison with conventional optimization methods because of its power in searching entire solution space with more probability of finding the global optimum. Also the model can be nonlinear with respect to parameters, and in this identification free noise system is assumed and transient excitation is considered instead of persistent excitation. Finally comparison between LSE and GA optimization is presented to indicate robustness and resolution of GA identification method in parameter estimation.","PeriodicalId":291800,"journal":{"name":"2007 International Conference on Electrical Engineering","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116963812","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: 22
FACTS Control Devices (Statcom, SSSC and UPFC) Re-Configuration Techniques By PSIM/MATLAB 基于PSIM/MATLAB的FACTS控制设备(Statcom, SSSC和UPFC)重新配置技术
2007 International Conference on Electrical Engineering Pub Date : 2007-04-11 DOI: 10.1109/ICEE.2007.4287295
T. Masood, N. Al-Emadi, S. Qureshi, Y. Almulla, Amin M. Khan, S. K. Shah
{"title":"FACTS Control Devices (Statcom, SSSC and UPFC) Re-Configuration Techniques By PSIM/MATLAB","authors":"T. Masood, N. Al-Emadi, S. Qureshi, Y. Almulla, Amin M. Khan, S. K. Shah","doi":"10.1109/ICEE.2007.4287295","DOIUrl":"https://doi.org/10.1109/ICEE.2007.4287295","url":null,"abstract":"This paper discusses comprehensively the dynamic performance of the FACTS control devices in multiple operations, hardware needed to complement the simulated models. This paper also presents the schematic and basic control of reconfigurable FACTS devices to realize the major voltage source converter FACTS Topologies: SATCOM, SSSC (Static synchronous Series compensator), UPFC. Furthermore, these control paradigms proposed in three prompt strategic directions to overcome outdated conventional control and other power control flaws in Pakistan power utilities wherein, including our neighboring countries (Iran, KSA, and India), and world-at-large, the FACTS been installed and in operation successfully. Whereas, Pakistan desperately needs this technology to hedge its power utilities to meet forthcoming challenges in power industry likewise significant growth in industry as well as domestic users under the declaration of government electrifying Pakistan 2007 to tap out power to its all rural areas by undertaking all possible means. Henceforth, the FACTS technology is an instrumental solution which will play vital and viable role to make this decree possible in following streams in parallel: Set-up FACTS Laboratory at UET to develop prototype devices, FACTS feasibility study and a pilot project (at most contaminated area). This paper also culminates and enlists all three experiment results to encourage the elective/graduate course in electric power system.","PeriodicalId":291800,"journal":{"name":"2007 International Conference on Electrical Engineering","volume":"113 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124354738","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: 9
Fuzzy Logic Based Speed Control of a Permanent Magnet Brushless DC Motor Drive 基于模糊逻辑的永磁无刷直流电动机速度控制
2007 International Conference on Electrical Engineering Pub Date : 2007-04-11 DOI: 10.1109/ICEE.2007.4287294
H. S. El-sayed, F. El-Khouly, M. Khater, A. Osheiba
{"title":"Fuzzy Logic Based Speed Control of a Permanent Magnet Brushless DC Motor Drive","authors":"H. S. El-sayed, F. El-Khouly, M. Khater, A. Osheiba","doi":"10.1109/ICEE.2007.4287294","DOIUrl":"https://doi.org/10.1109/ICEE.2007.4287294","url":null,"abstract":"This paper presents an analysis by which the dynamic performances of a permanent magnet brushless DC (PMBLDC) motor drive with different speed controllers can be successfully predicted. The control structure of the proposed drive system is described The dynamics of the drive system with a classical proportional-integral (PI) and a fuzzy-logic (FL) speed controllers are presented. The simulation result; for different parameters and operation modes of the drive system are investigated and compared The results with FL speed controller show improvement in transient response of the PMBLDC drive over conventional PI controller. Moreover, useful conclusions stemmed from such a study which is thought of good use and valuable for users of these controllers.","PeriodicalId":291800,"journal":{"name":"2007 International Conference on Electrical Engineering","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129141404","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: 9
DC Analysis of Layer by Layer Devices Fabricated by Nanotechnology 纳米技术制备的逐层器件的直流分析
2007 International Conference on Electrical Engineering Pub Date : 2007-04-11 DOI: 10.1109/ICEE.2007.4287323
S. Jafri, J. Dutta
{"title":"DC Analysis of Layer by Layer Devices Fabricated by Nanotechnology","authors":"S. Jafri, J. Dutta","doi":"10.1109/ICEE.2007.4287323","DOIUrl":"https://doi.org/10.1109/ICEE.2007.4287323","url":null,"abstract":"Fabrication strategies of nest generation electronic devices, that rely on mechanisms of self-assembly are now widely being recognized as inevitable tools in nanotechnology. Self-organized construction of advanced materials and devices has been carried out starting with tailor made colloidal nanoparticles as building blocks. The LBL thin films were constructed with Manganese doped or un-doped ZnS nanoparticles capped with a polyelectrolyte such as chitosan, and gold nanoparticles stabilized by electrostatic charge. Devices (greater than SO Layers) exhibited characteristics which initially Mock the current with applied voltage followed by a conduction of electrons, the onset of which depended on the thickness of the multilayer stack. In this report, we will be presenting the growth of layer upon multiple deposition process, the surface morphology, and the I-V characteristics of the LBL films and its characteristics repetition.","PeriodicalId":291800,"journal":{"name":"2007 International Conference on Electrical Engineering","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125043806","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
Faults Location in High Voltage Transmission System using ICA 基于ICA的高压输电系统故障定位
2007 International Conference on Electrical Engineering Pub Date : 2007-04-11 DOI: 10.1109/ICEE.2007.4287284
A.R. Almeida, A. Barros, M. DeSousa
{"title":"Faults Location in High Voltage Transmission System using ICA","authors":"A.R. Almeida, A. Barros, M. DeSousa","doi":"10.1109/ICEE.2007.4287284","DOIUrl":"https://doi.org/10.1109/ICEE.2007.4287284","url":null,"abstract":"Various methods for fault location in transmission lines have been proposed in the literature. This work presents an alternative method based upon the analysis of independent components (ICA) to localize the distance at which single-phase, two-phase, two-phase grounding and three-phase faults occur in a 500 kV transmission system starting from different angles of fault incidence at different distances along the line together with fault signals or travelling waves subject to other perturbations unrelated with the desired fault signal at the fault distance placement. Simulation results of a 500kV high voltage transmission system got with the software Alternative transients program (ATP) show that the proposed methodology implemented with Matlab is a rather efficient tod for various fault types location.","PeriodicalId":291800,"journal":{"name":"2007 International Conference on Electrical Engineering","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116607094","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
Reconstructing a Class of Cipher Systems Used in Wireless Digital Communications 重构一类用于无线数字通信的密码系统
2007 International Conference on Electrical Engineering Pub Date : 2007-04-11 DOI: 10.1109/ICEE.2007.4287285
L. A. Khan, M. S. Baig
{"title":"Reconstructing a Class of Cipher Systems Used in Wireless Digital Communications","authors":"L. A. Khan, M. S. Baig","doi":"10.1109/ICEE.2007.4287285","DOIUrl":"https://doi.org/10.1109/ICEE.2007.4287285","url":null,"abstract":"This paper presents improvement in the ciphertext only reconstruction technique of LFSR based stream ciphers. The original algorithm involves huge computations and requires a large number of ciphertext bits to be processed (for original article by A. Canteaut and E. Filiol, see FSE 2000, LCNS 1978, Spriger Verlag, 2001) . We present techniques to increase the efficiency of the reconstruction algorithm and reduce the computation time. In this regards, the first improvement is achieved by modifying the decision threshold value according to the available ciphertext bits. With this, we achieved a reduction by one fourth in the computation time as well as the minimum ciphertext requirement. Further improvement is achieved by the parallelization of the algorithm. Experimental results of the improvement in computation time and efficiency have been detailed. A generalization of the reconstruction technique to a wide range of stream ciphers is also presented.","PeriodicalId":291800,"journal":{"name":"2007 International Conference on Electrical Engineering","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115473492","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
A Subspace Approach for Speech Enhancement Using Frame-Level AdaBoost Classification 基于帧级AdaBoost分类的语音增强子空间方法
2007 International Conference on Electrical Engineering Pub Date : 2007-04-11 DOI: 10.1109/ICEE.2007.4287303
A. Salman, E. Muhammad, K. Khurshid
{"title":"A Subspace Approach for Speech Enhancement Using Frame-Level AdaBoost Classification","authors":"A. Salman, E. Muhammad, K. Khurshid","doi":"10.1109/ICEE.2007.4287303","DOIUrl":"https://doi.org/10.1109/ICEE.2007.4287303","url":null,"abstract":"An efficient approach for noise suppression in speech is presented in this paper. The basic idea is taken from signal subspace analysis, which is employed for noise reduction in speech. Different other subspace approaches assumed the estimation of noise from the initial silence or unvoiced portion of the speech signal and the noise was considered to be same and present throughout the signal. The problem of noise suppression and its solution has to be modified when the noise becomes time-varying and has to be detected more accurately, instead of its crude estimation from unvoiced speech or silence. This needs an accurate classification for noise of different types which are experienced practically. In this paper an AdaBoost classifier is used to discriminate noise (colored/white, persistent/time-varying) from the corrupted voiced part of the speech. In this way the noise can be detected and estimated in each noise-only frame. Then the signal subspace technique can be used for speech enhancement. This approach produces significantly better result as compared to other signal subspace speech enhancement techniques.","PeriodicalId":291800,"journal":{"name":"2007 International Conference on Electrical Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125826105","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
Activity based Contrast Enhancement of Compressed Digital images in DCT Domain 基于活动的DCT域压缩数字图像对比度增强
2007 International Conference on Electrical Engineering Pub Date : 2007-04-11 DOI: 10.1109/ICEE.2007.4287332
K. Iqbal, A. Bangash, A. Chaudhry, A. Khan
{"title":"Activity based Contrast Enhancement of Compressed Digital images in DCT Domain","authors":"K. Iqbal, A. Bangash, A. Chaudhry, A. Khan","doi":"10.1109/ICEE.2007.4287332","DOIUrl":"https://doi.org/10.1109/ICEE.2007.4287332","url":null,"abstract":"In most image enhancement tasks, contrast enhancement is a pre-step for the later processing stages. In this paper, we propose a new technique for adaptive contrast enhancement of compressed images in discrete cosine transform (DCT) domain. The algorithm, at the same time, uses human visual system (HVS) as a guide in avoiding unpleasant block artifacts that often appear at the Hock boundaries as a result of processing in DCT domain. An activity measure determines the level of enhancement that a block can withstand without creating any blocking artifacts and simultaneously enhancing the contrast. Since the enhancement process is done during the decompression stage, the compressibility of the original image is not affected. Subjective and objective tests validate our concept of activity based contrast enhancement and the avoidance of block artifacts in the resultant image.","PeriodicalId":291800,"journal":{"name":"2007 International Conference on Electrical Engineering","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132796702","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
Model-Predicted Induction Motor Behaviour under Different Operating Conditions 模型预测感应电机在不同操作条件下的行为
2007 International Conference on Electrical Engineering Pub Date : 2007-04-11 DOI: 10.1109/ICEE.2007.4287286
A. Alshandoli
{"title":"Model-Predicted Induction Motor Behaviour under Different Operating Conditions","authors":"A. Alshandoli","doi":"10.1109/ICEE.2007.4287286","DOIUrl":"https://doi.org/10.1109/ICEE.2007.4287286","url":null,"abstract":"This paper presents a simulation study to verify the capability of the instantaneous phase variation (IPV) for the detection of broken rotor bar faults in a squirrel cage induction motor. The three-phase squirrel cage motor model has been derived using a multi coupled circuits approach. The obtained results show that IPV has a good detection and diagnosis capabilities especially at full load conditions.","PeriodicalId":291800,"journal":{"name":"2007 International Conference on Electrical Engineering","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130319983","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: 8
A Photo-Voltaic System with Load Control 具有负载控制的光伏系统
2007 International Conference on Electrical Engineering Pub Date : 2007-04-11 DOI: 10.1109/ICEE.2007.4287298
M. Ghias, K. Karimov, S. Termizi, M. Mughal, M. Saqib, I. H. Kazmi
{"title":"A Photo-Voltaic System with Load Control","authors":"M. Ghias, K. Karimov, S. Termizi, M. Mughal, M. Saqib, I. H. Kazmi","doi":"10.1109/ICEE.2007.4287298","DOIUrl":"https://doi.org/10.1109/ICEE.2007.4287298","url":null,"abstract":"This paper describes the design of a fixed photo-voltaic (PV) system that consists of the modules array, DC-AC inverter and switches. The short-circuit current and open-circuit voltage of the 66 modules of the system have been investigated in natural conditions. The PV system, with the crystalline and multi-crystalline modules of area 0.384 m2, and 0.391 m2 respectively, is able to provide an average electric power of ~1.6 kW. The inclination angle between the module and the horizontal plane was equal to 45deg. Current-voltage characteristics of the PV system were obtained by simulation at different intensities of solar radiation. Matching of the PV system with load was done by load control method: end-users are switched automatically to provide optimum power transfer from PV generator into load at variable intensity of solar radiation. The PV system can be operated in the mode of grid-connected or stand alone modes. The cost and benefit analysis of the designed PV system was done.","PeriodicalId":291800,"journal":{"name":"2007 International Conference on Electrical Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130592723","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: 8
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