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On the first- and second-order statistical properties of different Rayleigh fading channel models 不同瑞利衰落信道模型的一阶和二阶统计特性
2015 9th International Conference on Electrical and Electronics Engineering (ELECO) Pub Date : 2015-11-01 DOI: 10.1109/ELECO.2015.7394541
Mohamed Ali Skima, Amira Boulaaba, H. Ghariani
{"title":"On the first- and second-order statistical properties of different Rayleigh fading channel models","authors":"Mohamed Ali Skima, Amira Boulaaba, H. Ghariani","doi":"10.1109/ELECO.2015.7394541","DOIUrl":"https://doi.org/10.1109/ELECO.2015.7394541","url":null,"abstract":"This paper is a continuation of our previous works on performance of different simulation models for Rayleigh fading channels. Previously, we have compared and analyzed several Rayleigh fading simulation models in terms accuracy and complexity. Some of these models are non-ergodic and their statistical properties vary from one simulation trial to another. Thus, a focus on the convergence behavior of such models is highly recommended which is missing in our previous works. In this paper, the first- and second-order statistical properties of seven of the most popular Rayleigh fading models are reviewed. The quality of the envelope probability density function (PDF) of the different models is evaluated using a more convenient quantitative measure. The convergence of the non-ergodic stochastic models is inspected based on the variances of the time-averaged correlation properties. The simulation results reveal several important conclusions about the accuracy as well as the capacity of the different models.","PeriodicalId":369687,"journal":{"name":"2015 9th International Conference on Electrical and Electronics Engineering (ELECO)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128863830","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
Design and finite element analysis of a radial-flux salient-pole eddy current brake 径向磁通显极涡流制动器的设计与有限元分析
2015 9th International Conference on Electrical and Electronics Engineering (ELECO) Pub Date : 2015-11-01 DOI: 10.1109/ELECO.2015.7394612
Ali Sinmaz, M. O. Gulbahce, D. Kocabas
{"title":"Design and finite element analysis of a radial-flux salient-pole eddy current brake","authors":"Ali Sinmaz, M. O. Gulbahce, D. Kocabas","doi":"10.1109/ELECO.2015.7394612","DOIUrl":"https://doi.org/10.1109/ELECO.2015.7394612","url":null,"abstract":"This paper presents a novel design containing design constraints and analysis of a radial-flux salient pole Eddy current brake whereby performance characteristics and design principles are given. In order to obtain an optimal brake design, different design models based on different parameters are all analyzed by using finite element method (FEM). Eventually, an optimized radial-flux salient pole eddy current brake design having more effective cooling capability than that of the conventional one is purposed. Results for the analysis are presented together with advantages and disadvantages.","PeriodicalId":369687,"journal":{"name":"2015 9th International Conference on Electrical and Electronics Engineering (ELECO)","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132641729","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
Cloud-based long term electricity demand forecasting using artificial neuro-fuzzy and neural networks 基于人工神经模糊和神经网络的长期电力需求预测
2015 9th International Conference on Electrical and Electronics Engineering (ELECO) Pub Date : 2015-11-01 DOI: 10.1109/ELECO.2015.7394549
O. T. Altinoz, Erhan Mengusoglu
{"title":"Cloud-based long term electricity demand forecasting using artificial neuro-fuzzy and neural networks","authors":"O. T. Altinoz, Erhan Mengusoglu","doi":"10.1109/ELECO.2015.7394549","DOIUrl":"https://doi.org/10.1109/ELECO.2015.7394549","url":null,"abstract":"The supply-demand equilibrium is the main criteria for determination of electricity pricing for both electrical power production companies and ordinary (household) users. The companies must be sure about future demands of electricity for uninterrupted efficient electrical supply. The demand of electricity is affected from weather conditions, process of economy, working and nonworking days of a year, etc. Therefore, forecasting demand by using current and historical data is very important for electricity trading and producing companies. In this study, a cloud-based forecasting service which is based on neural network model is proposed for long-term electricity demand forecasting of Turkey. Cloud based nature of the proposed system help continuous training and improved forecasting capability over time from the system. Following year overall electric demand is approximately estimated with neural network and artificial neuro-fuzzy inference systems.","PeriodicalId":369687,"journal":{"name":"2015 9th International Conference on Electrical and Electronics Engineering (ELECO)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132106678","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
Convergence improvement of surrogate based optimization for reconfigurable antenna design using knowledge based inverse 3-step modeling 基于知识逆三步建模的可重构天线设计代理优化收敛性改进
2015 9th International Conference on Electrical and Electronics Engineering (ELECO) Pub Date : 2015-11-01 DOI: 10.1109/ELECO.2015.7394598
M.Simsek Murat Simsek, A. Aoad
{"title":"Convergence improvement of surrogate based optimization for reconfigurable antenna design using knowledge based inverse 3-step modeling","authors":"M.Simsek Murat Simsek, A. Aoad","doi":"10.1109/ELECO.2015.7394598","DOIUrl":"https://doi.org/10.1109/ELECO.2015.7394598","url":null,"abstract":"Engineering design process requires modeling and optimization to find optimum design parameters. While direct optimization only exploits time consuming but accurate fine model, surrogate based optimization exploits less accurate but fast coarse model to reduce the overall computational effort. In this work, space mapping with inverse difference technique is applied to antenna design problem together with efficient 3-step modeling. The combination of two techniques provides less computational effort and better convergence through the accuracy improvement based on the new inverse 3-step modeling strategy. The inverse coarse model which is used for the parameter extraction process during the optimization is realized by knowledge based inverse 3-step modeling. Inverse 3-step coarse model is obtained by multi layer perceptron in MATLAB ANN toolbox. The efficiency of the combination of space mapping with inverse difference technique and 3-step modeling strategy will be demonstrated by reconfigurable antenna design example in terms of their convergence and accuracy through its multiple operating frequency characteristic.","PeriodicalId":369687,"journal":{"name":"2015 9th International Conference on Electrical and Electronics Engineering (ELECO)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129465896","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
Photovoltaic power from commercial and industrial rooftops — Analysis for cities of Brimbank and Hobsons Bay in Victoria, Australia 商业和工业屋顶光伏发电 - 澳大利亚维多利亚州布林班克市和霍布森湾市分析
2015 9th International Conference on Electrical and Electronics Engineering (ELECO) Pub Date : 2015-11-01 DOI: 10.1109/ELECO.2015.7394454
M. A. Nuccio, C. Ozansoy, Z. Tari
{"title":"Photovoltaic power from commercial and industrial rooftops — Analysis for cities of Brimbank and Hobsons Bay in Victoria, Australia","authors":"M. A. Nuccio, C. Ozansoy, Z. Tari","doi":"10.1109/ELECO.2015.7394454","DOIUrl":"https://doi.org/10.1109/ELECO.2015.7394454","url":null,"abstract":"Climate-change concerns are driving governments to plan for the development and implementation of sustainable electricity generation systems. To aid with the task of reducing the continent's Greenhouse Gas (GHG) emissions alliances are being formed between local councils. The Western Alliance for Greenhouse Action (WAGA) is such an alliance formed by seven councils in Melbourne's west. One of the main goals of the alliance is the planning and development of hybrid renewable energy systems as environmentally friendly substitutes for the current coal-fired power stations, which at present supply the electricity consumed in the region. This paper presents the results of a study conducted to assess the solar electrical energy potential from identified commercial and industrial roofing within the alliance's municipalities. In this study, the analysis for the cities of Brimbank and Hobsons Bay is outlined. The results demonstrate that 1115 GWh of solar electrical energy can be generated annually in the two councils from commercial and industrial rooftops, which corresponds to an emissions savings of 1,359 ktonne CO2-e.","PeriodicalId":369687,"journal":{"name":"2015 9th International Conference on Electrical and Electronics Engineering (ELECO)","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129847926","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 new single switch bridgeless SEPIC PFC converter with low cost, low THD and high PF 一种新型低成本、低THD、高PF的单开关无桥SEPIC PFC变换器
2015 9th International Conference on Electrical and Electronics Engineering (ELECO) Pub Date : 2015-11-01 DOI: 10.1109/ELECO.2015.7394472
Y. Onal, Y. Sozer
{"title":"A new single switch bridgeless SEPIC PFC converter with low cost, low THD and high PF","authors":"Y. Onal, Y. Sozer","doi":"10.1109/ELECO.2015.7394472","DOIUrl":"https://doi.org/10.1109/ELECO.2015.7394472","url":null,"abstract":"In this paper, a new single switch bridgeless AC/DC power factor correction PFC converter topology to achieve high PF and low THD is proposed. The proposed converter is based on the single ended primary inductance converter SEPIC topology. The SEPIC converters can operating from an input voltage that is greater or less than the output voltage. The proposed PFC uses only one active switch to PFC process together hoping higher PF and low THD. Besides the application cost is less than conventional bridgeless SEPIC PFC, in where two active switching devices are necessary. In order to verify the performance comparison between the proposed and the conventional SEPIC PFC, simulation circuit with 100W is install in PSIM. The simulation results are presented to demonstrate the feasibility of the proposed converters. The results show that the proposed bridgeless SEPIC PFC perfectly succeeds PFC operation using a single active switch.","PeriodicalId":369687,"journal":{"name":"2015 9th International Conference on Electrical and Electronics Engineering (ELECO)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114407553","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: 5
Optimal integration of wind power resources in distribution networks considering demand response programs 考虑需求响应方案的配电网风电资源优化整合
2015 9th International Conference on Electrical and Electronics Engineering (ELECO) Pub Date : 2015-11-01 DOI: 10.1109/ELECO.2015.7394464
S. Abapour, Alireza E. Khosroshahi, Amir Frakhor, M. Abapour
{"title":"Optimal integration of wind power resources in distribution networks considering demand response programs","authors":"S. Abapour, Alireza E. Khosroshahi, Amir Frakhor, M. Abapour","doi":"10.1109/ELECO.2015.7394464","DOIUrl":"https://doi.org/10.1109/ELECO.2015.7394464","url":null,"abstract":"Distribution network operators (DNOs) tend to supply electrical energy to its customers in an economical and reliable manner. If wind power generation (WPG) units are planned with a suitable way, they will be the best option to reduce costs and increase the distribution network reliability. This paper proposes a WPG units planning model to determine technology type, capacity and location of WPG units to reduce power losses and improve reliability and voltage profile in network. In this model, DNO has been considered to study the effect of demand response programs (DRP) on total cost function, where the time-of-use rates of demand response programs have been modeled and consequently its influence on load profile has been discussed. Objective function is a cost function which minimizes the investment and operation cost of DGs, purchase costs of the upstream network, defined cost to reliability index and the energy losses. In this study, electrical load is time variable and model is simulated on a typical radial network, successfully.","PeriodicalId":369687,"journal":{"name":"2015 9th International Conference on Electrical and Electronics Engineering (ELECO)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116315135","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
Effect of passivation on III-nitride/silicon tandem solar cells 钝化对iii -氮化物/硅串联太阳能电池的影响
2015 9th International Conference on Electrical and Electronics Engineering (ELECO) Pub Date : 2015-11-01 DOI: 10.1109/ELECO.2015.7394590
H. Ekinci, V. Kuryatkov, I. Gherasoiu, S. Nikishin
{"title":"Effect of passivation on III-nitride/silicon tandem solar cells","authors":"H. Ekinci, V. Kuryatkov, I. Gherasoiu, S. Nikishin","doi":"10.1109/ELECO.2015.7394590","DOIUrl":"https://doi.org/10.1109/ELECO.2015.7394590","url":null,"abstract":"We have studied the impact of mesa sidewall passivation by SiO2 on characteristics of III-nitride/silicon tandem solar cells. These dual junction solar cells were fabricated from standard n-type Si (111) substrates with III-nitride epitaxial layers grown by plasma-assisted molecular beam epitaxy (PAMBE). Photovoltaic testing was experimentally carried out under a solar simulator before and after the 100nm-thick SiO2 passivation of these solar cell mesa side walls. We have found that the sidewall passivation improves the efficiency of these solar cells. The open-circuit voltage (VOC) increased from 1.45 to 1.53 V, the short-circuit current density (JSC) enhanced from 0.116 to 0.121 mA/cm2, the fill factor increased from 39.7 to 41.5% under the solar simulator illumination yielding 13.3% conversion efficiency improvement after passivation. Moreover, IPCE (the incident monochromatic photon to current conversion efficiency) also moderately increased by approximately 13% in the visible region after passivation.","PeriodicalId":369687,"journal":{"name":"2015 9th International Conference on Electrical and Electronics Engineering (ELECO)","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114489205","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
An implementation of analog portable EEG signal extraction system 一种模拟便携式脑电信号提取系统的实现
2015 9th International Conference on Electrical and Electronics Engineering (ELECO) Pub Date : 2015-11-01 DOI: 10.1109/ELECO.2015.7394436
M. E. Sahin, Yunus Uçar, Feyzullah Temurtaş
{"title":"An implementation of analog portable EEG signal extraction system","authors":"M. E. Sahin, Yunus Uçar, Feyzullah Temurtaş","doi":"10.1109/ELECO.2015.7394436","DOIUrl":"https://doi.org/10.1109/ELECO.2015.7394436","url":null,"abstract":"In this study, it is aimed to perform an analog portable EEG (electroencephalogram) signal extraction system design. A portable biomedical signal recorder is vital to detect symptoms such as encephalitis, epilepsy etc. With coming into our life of EEG signal recording system, the signal acquired from human with help of electrodes has pre-processed for amplification by use of AD620 which is an instrumentation amplifier. Amplified EEG signals have been transmitted into high pass, low pass and notch filters, respectively to eliminate noise which are surrounded from tissues of the body and interference from the nearby electrical sources in the analog circuitry. Then the signals are converted into digital signals by an ADC. Finally, we transmitted EEG signals to computer by using Arduino and a special software application is used to display the output signals on Processing interface program. Two channels EEG recorder system has designed for real-time applications due to controlling and it can be developed to multi-channel systems to obtain reliable results in clinical setting.","PeriodicalId":369687,"journal":{"name":"2015 9th International Conference on Electrical and Electronics Engineering (ELECO)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132357406","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
Chaotic digital image watermarking scheme based on DWT and SVD 基于DWT和SVD的混沌数字图像水印方案
2015 9th International Conference on Electrical and Electronics Engineering (ELECO) Pub Date : 2015-11-01 DOI: 10.1109/ELECO.2015.7394461
G. Çetinel, L. Cerkezi
{"title":"Chaotic digital image watermarking scheme based on DWT and SVD","authors":"G. Çetinel, L. Cerkezi","doi":"10.1109/ELECO.2015.7394461","DOIUrl":"https://doi.org/10.1109/ELECO.2015.7394461","url":null,"abstract":"In this study chaos based digital watermarking scheme together with Discrete Wavelet Transform (DWT) and Singular Value Decomposition (SVD) is proposed. In the proposed watermarking scheme, the cover image is decomposed to its sub-bands (LL, LH, HL and HH) by a common used frequency domain transform: DWT. Then, the SVD is directly applied to the all sub-bands of the decomposed cover image. The watermark is shuffled with Arnold's Cat Map (ACM) to generate a chaotic watermark. By this way, the robustness and perceptual invisibility of the scheme is improved. In order to evaluate the robustness of the proposed scheme, several image processing and geometric attacks are applied to the scheme. The Normalized correlation (NC) and peak signal-to-noise ratio (PSNR) measures are used to show the performance of the proposed method in terms of robustness and perceptual invisibility. The proposed algorithm gives the promising results and meets the security requirements.","PeriodicalId":369687,"journal":{"name":"2015 9th International Conference on Electrical and Electronics Engineering (ELECO)","volume":"308 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132830367","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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