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2016 9th International Conference on Electrical and Computer Engineering (ICECE)最新文献

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Third harmonic differential over current relay based protection system for stator ground fault in synchronous generator 基于三次谐波差动过流继电器的同步发电机定子接地故障保护系统
2016 9th International Conference on Electrical and Computer Engineering (ICECE) Pub Date : 2016-12-01 DOI: 10.1109/ICECE.2016.7853993
Md. Asif Chowdhury, Kazi Taimur Reza, Md. Didarul Alam, E. Basher
{"title":"Third harmonic differential over current relay based protection system for stator ground fault in synchronous generator","authors":"Md. Asif Chowdhury, Kazi Taimur Reza, Md. Didarul Alam, E. Basher","doi":"10.1109/ICECE.2016.7853993","DOIUrl":"https://doi.org/10.1109/ICECE.2016.7853993","url":null,"abstract":"In this paper, a new method is proposed for 100% protection against the stator earth fault in synchronous generator. Conventional ground fault protection schemes can be applied to any generator but it covers at most 95% of generator stator length. For ensuring 100% protection of synchronous generator stator winding, conventional ground fault schemes are combined with our proposed third harmonic differential over current protection scheme. Moreover, an investigation into the differences between first harmonic fault current and third harmonic fault current is performed. By using proper simulation model, earth faults are simulated at various distant points from the generator neutral and using this simulations, first harmonic fault current and third harmonic fault current characteristics are properly distinguished. Finally, the threshold current of our proposed differential third harmonic over current relay is selected based on the results of the simulations.","PeriodicalId":122930,"journal":{"name":"2016 9th International Conference on Electrical and Computer Engineering (ICECE)","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133775248","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
Temperature dependent structural studies and magnetic characterization of pure BiFeO3 nanoparticles synthesized by sol-gel method 溶胶-凝胶法制备纯BiFeO3纳米颗粒的温度依赖性结构研究和磁性表征
2016 9th International Conference on Electrical and Computer Engineering (ICECE) Pub Date : 2016-12-01 DOI: 10.1109/ICECE.2016.7853887
A. Sifat, K. A. Aabrar, M. Bashar, B. Ahmmad, M. Basith, M. R. Khan
{"title":"Temperature dependent structural studies and magnetic characterization of pure BiFeO3 nanoparticles synthesized by sol-gel method","authors":"A. Sifat, K. A. Aabrar, M. Bashar, B. Ahmmad, M. Basith, M. R. Khan","doi":"10.1109/ICECE.2016.7853887","DOIUrl":"https://doi.org/10.1109/ICECE.2016.7853887","url":null,"abstract":"Pure BiFeO3 nanoparticles were synthesized by a simple sol-gel method namely modified Pechini method. The nanoparticles were calcinated at four different temperatures (450°C, 550°C, 650°C, 750°C). Requirement for extra washing step for impurity phase reduction has been eliminated by elongation of the drying duration at oven from 12 hours to 28 hours along with intermediate grinding. FESEM and X-ray Diffraction (XRD) were performed which confirm that the samples calcinated at 450°C and 550°C show smaller particle size and greater correspondence. Hence XPS was performed on these two samples which showed lower oxygen vacancies for 550°C. Finally the SQUID analysis has been carried out for the 550°C sample. A higher value of remanent magnetization and coercive field at room temperature has been observed. Besides, an asymmetric shift in the field axis with unsaturated M-H curve may be attributed to the existence of exchange bias effect in the synthesized nanoparticles.","PeriodicalId":122930,"journal":{"name":"2016 9th International Conference on Electrical and Computer Engineering (ICECE)","volume":"323 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124576183","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
Multiscale-multiphysics modeling of nonclassical semiconductor devices 非经典半导体器件的多尺度多物理场建模
2016 9th International Conference on Electrical and Computer Engineering (ICECE) Pub Date : 2016-12-01 DOI: 10.1109/ICECE.2016.7853846
S. Ahmed, M. Z. Rashid, Saad M. Al-Qahtani, Abdulmuin M. Abdullah, M. R. Nishat, K. Khair, Ye Wu, Mayada Taher, Sameer Al-Sibiani, Abdussamad Muntahi
{"title":"Multiscale-multiphysics modeling of nonclassical semiconductor devices","authors":"S. Ahmed, M. Z. Rashid, Saad M. Al-Qahtani, Abdulmuin M. Abdullah, M. R. Nishat, K. Khair, Ye Wu, Mayada Taher, Sameer Al-Sibiani, Abdussamad Muntahi","doi":"10.1109/ICECE.2016.7853846","DOIUrl":"https://doi.org/10.1109/ICECE.2016.7853846","url":null,"abstract":"This work describes our on-going efforts to develop a multiscale Quantum Atomistic Device Simulator (QuADS 3-D) where: a) material parameters are obtained atomistically using first-principles, b) structural relaxation and phonon dispersions are studied via molecular mechanics/dynamics, c) a variety of tight-binding models (s, sp3s*, sp3d5s*) are used for the calculation of electronic bandstructure and interband transition rates, and d) coupled charge-phonon transport is simulated using a combined Monte Carlo-NEGF framework. The atom-by-atom simulation capability in QuADS 3-D exposes new degrees-of-freedom at nanoscale (such as engineering the stress, hybrid crystal cuts, composition, surface polarization, and electrostatics) and creates transformative design routes for boosting performance and reliability of novel nanoelectronic devices. Application of QuADS 3-D is demonstrated by four examples: 1) quantum and coulomb effects in nanoscale FETs; 2) correlation of structural modifications and reliability in AlGaN HEMTs; 3) effects of contact resistances in nanostructured thermoelectric coolers; and 4) efficiency droop in nanostructured III-N LEDs.","PeriodicalId":122930,"journal":{"name":"2016 9th International Conference on Electrical and Computer Engineering (ICECE)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117303762","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
Loadability improvement of an existing AC line by transmitting simultaneous AC and DC power 通过同时传输交流和直流电源来改善现有交流线路的负载性
2016 9th International Conference on Electrical and Computer Engineering (ICECE) Pub Date : 2016-12-01 DOI: 10.1109/ICECE.2016.7853961
Mohammad Tawhidul Alam, R. Sadnan, I. Haque, Mushfequr Rahman, Q. Ahsan
{"title":"Loadability improvement of an existing AC line by transmitting simultaneous AC and DC power","authors":"Mohammad Tawhidul Alam, R. Sadnan, I. Haque, Mushfequr Rahman, Q. Ahsan","doi":"10.1109/ICECE.2016.7853961","DOIUrl":"https://doi.org/10.1109/ICECE.2016.7853961","url":null,"abstract":"To increase the power flow through an existing AC line, different compensator devices are used. Flexible alternating current transmission system (FACTS) are very common for the enhancement of power transmission capability of the line. Due to stability reasons, these compensation methods have limitations. Another alternative is to construct new AC transmission lines, which is not only expensive, but also time consuming. And it is not viable for every situation. However, transmitting both AC-DC power through the same line can increase the power flow without impairing the stability of the network. This paper investigates the increased power flow through an AC line when it is used to transmit both AC and DC power simultaneously. A model of a long transmission line carrying simultaneously both AC and DC power is studied for this purpose. The model uses a system of transformer and rectifier to produce and carry such power from a generating source to an infinite bus through the line. The study compares the power flow of the traditional AC line and the proposed simultaneous AC-DC power transmission.","PeriodicalId":122930,"journal":{"name":"2016 9th International Conference on Electrical and Computer Engineering (ICECE)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122021381","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
Active management of Wind Turbine-diesel generator hybrid system considering economic criteria 考虑经济性的风力发电机组-柴油发电机组混合系统的主动管理
2016 9th International Conference on Electrical and Computer Engineering (ICECE) Pub Date : 2016-12-01 DOI: 10.1109/ICECE.2016.7853921
Hasnain Ahamad Ziad, Md. Rafiqul Islam
{"title":"Active management of Wind Turbine-diesel generator hybrid system considering economic criteria","authors":"Hasnain Ahamad Ziad, Md. Rafiqul Islam","doi":"10.1109/ICECE.2016.7853921","DOIUrl":"https://doi.org/10.1109/ICECE.2016.7853921","url":null,"abstract":"A simulation on developing the voltage control with active management system of Wind Turbines (WT)-diesel generator (DG) hybrid system considering economic criteria is exhibited in this paper. The hybrid system model is developed from mathematical equations of WTs as well as diesel generators and evaluated the system performances. Minimizing the overall cost and power losses the proposed active management method includes the On Load Tap Changers (OLTC) voltage regulator in addition to reactive power control of WTs and DG. The performance of this method is verified on a 30-bus grid associated 11-kV distribution network comprising WTs and DG, consistent with time-varying characteristics of the load and WTs power generation.","PeriodicalId":122930,"journal":{"name":"2016 9th International Conference on Electrical and Computer Engineering (ICECE)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124623659","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
Highly birefringent bisymmetric photonic crystal fiber for terahertz wave guidance 用于太赫兹波制导的高双折射双对称光子晶体光纤
2016 9th International Conference on Electrical and Computer Engineering (ICECE) Pub Date : 2016-12-01 DOI: 10.1109/ICECE.2016.7853868
Md Nafiz Amin, M. Faisal
{"title":"Highly birefringent bisymmetric photonic crystal fiber for terahertz wave guidance","authors":"Md Nafiz Amin, M. Faisal","doi":"10.1109/ICECE.2016.7853868","DOIUrl":"https://doi.org/10.1109/ICECE.2016.7853868","url":null,"abstract":"A novel design for a highly birefringent photonic crystal fiber (PCF) with all circular holes for transmission in the terahertz (THz) regime is proposed. It shows a very high birefringence ∼0.05 in the 0.7–1.5 THz frequency range. Using finite element method, we calculated the important optical properties like birefringence, material loss, confinement loss, and dispersion and investigated the effects of varying the fiber parameters on them. Design simplicity of the proposed PCF leads to great fabrication advantage over other complicated patterns. Therefore, the fiber is likely to find important uses in different THz polarization maintaining applications.","PeriodicalId":122930,"journal":{"name":"2016 9th International Conference on Electrical and Computer Engineering (ICECE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130035361","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
Incorporating advanced power electronic concepts with hands-on emphasis in a low-cost power engineering curriculum 在低成本电力工程课程中结合先进的电力电子概念和实践重点
2016 9th International Conference on Electrical and Computer Engineering (ICECE) Pub Date : 2016-12-01 DOI: 10.1109/ICECE.2016.7853885
M. Rahman
{"title":"Incorporating advanced power electronic concepts with hands-on emphasis in a low-cost power engineering curriculum","authors":"M. Rahman","doi":"10.1109/ICECE.2016.7853885","DOIUrl":"https://doi.org/10.1109/ICECE.2016.7853885","url":null,"abstract":"The contents of a advanced power electronic course have been developed for a power engineering curriculum that is evolving despite of having limited resources. These course contents can be segmented and inserted into junior, senior, and graduate level courses to benefit students. Some of the techniques involve hands-on teaching using project-based approach. Some of the project outputs will be presented in this paper. Even though the currently available resources do not allow administering new courses this approach will help students learn advanced topics practiced in power industries and taught in resource-rich academic institutes.","PeriodicalId":122930,"journal":{"name":"2016 9th International Conference on Electrical and Computer Engineering (ICECE)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125493822","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
On the autocorrelation and cross-correlation of ternary möbius sequence over finite field 有限域上三元möbius序列的自相关和互相关
2016 9th International Conference on Electrical and Computer Engineering (ICECE) Pub Date : 2016-12-01 DOI: 10.1109/ICECE.2016.7853953
Fatema Akhter, Md. Selim Al Mamun
{"title":"On the autocorrelation and cross-correlation of ternary möbius sequence over finite field","authors":"Fatema Akhter, Md. Selim Al Mamun","doi":"10.1109/ICECE.2016.7853953","DOIUrl":"https://doi.org/10.1109/ICECE.2016.7853953","url":null,"abstract":"This paper proposes a novel approach for pseudo random ternary sequence over finite field. The sequence is generated from a primitive polynomial over finite field applying trace function and möbius function. This paper further presents some important properties such as period, autocorrelation and cross-correlation of the generated sequence. The proposed approach is experimented on various bit length of odd characteristic and compared with some existing works. The comparison results shows the superiority of the proposed approach over existing ones.","PeriodicalId":122930,"journal":{"name":"2016 9th International Conference on Electrical and Computer Engineering (ICECE)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121316770","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
Ultra-flattened broadband dispersion compensating photonic crystal fiber with ultra-low confinement loss 超低约束损耗的超扁平宽带色散补偿光子晶体光纤
2016 9th International Conference on Electrical and Computer Engineering (ICECE) Pub Date : 2016-12-01 DOI: 10.1109/ICECE.2016.7853901
A. Ani, M. Faisal
{"title":"Ultra-flattened broadband dispersion compensating photonic crystal fiber with ultra-low confinement loss","authors":"A. Ani, M. Faisal","doi":"10.1109/ICECE.2016.7853901","DOIUrl":"https://doi.org/10.1109/ICECE.2016.7853901","url":null,"abstract":"A simple index-guiding circular-lattice photonic crystal fiber is presented in this paper for compensation of dispersion with extremely low confinement loss. Full vector finite element method (FEM) with an anisotropic perfectly matched absorbing layer boundary condition is used to investigate the guiding properties. The designed dispersion compensating photonic crystal fiber (DC-DCF) shows that it is possible to obtain an ultra-flattened average dispersion of −124.0 ps/(nm.km) with a dispersion variation of ± 0.1252 ps/(nm.km) in the wavelength range of 1350 to 1700 nm (around E+S+C+L+U telecommunication band) at very low confinement loss less than 10−6 dB/km by using a modest number of design parameters and very simple cladding design. Furthermore, fiber nonlinearities and single-mode operation are also checked for the entire band.","PeriodicalId":122930,"journal":{"name":"2016 9th International Conference on Electrical and Computer Engineering (ICECE)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121553011","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: 14
Low loss porous-core photonic crystal fiber for long-haul broadband THz transmission 远距离宽带太赫兹传输用低损耗多孔芯光子晶体光纤
2016 9th International Conference on Electrical and Computer Engineering (ICECE) Pub Date : 2016-12-01 DOI: 10.1109/ICECE.2016.7853978
Shekh Farhad Uddin Ahmed, SK Nayemuzzaman, M. Faisal
{"title":"Low loss porous-core photonic crystal fiber for long-haul broadband THz transmission","authors":"Shekh Farhad Uddin Ahmed, SK Nayemuzzaman, M. Faisal","doi":"10.1109/ICECE.2016.7853978","DOIUrl":"https://doi.org/10.1109/ICECE.2016.7853978","url":null,"abstract":"This paper presents a novel porous-core photonic crystal fiber (PCF) having extremely low material absorption loss at terahertz window suitable for THz transmission. Finite element method (FEM) is used to investigate the properties of the proposed PCF with a porous core surrounded by a compact cladding structure having hexagonal air holes. Simulation results reveal that effective material loss (EML) of ∼ 0.028 cm−1 can be achieved at operating frequency of 1 THz which is only 12.5% of the bulk material loss of Topas. Additionally, the confinement loss of ∼ 0.0005 cm−1 is obtained at 1 THz which is relatively low with a nearly zero flat dispersion profile of 0.196 ± 0.183 ps/THz/cm which are significant features for long distance broadband THz transmission.","PeriodicalId":122930,"journal":{"name":"2016 9th International Conference on Electrical and Computer Engineering (ICECE)","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121488736","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
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