{"title":"A simple method to determine the optimal location of active flow controllers on wind turbine blades","authors":"T. Macquart, A. Maheri, K. Busawon","doi":"10.1109/EFEA.2014.7059982","DOIUrl":"https://doi.org/10.1109/EFEA.2014.7059982","url":null,"abstract":"Active flow controllers (AFCs) have shown promising load alleviation potential. The implementation of AFCs on wind turbine blades remains, however, experimental. The present paper investigates the load alleviation capability of AFCs as a function of their location along the blade span. In particular, an analytical method is derived in order to maximise load alleviation by optimally locating AFCs along the blade span. The results obtained by the proposed analytical method are compared and validated with a validated BEMT based-code (WTAC). It is found that the optimal location of AFCs can be calculated based exclusively on the chord geometry.","PeriodicalId":129568,"journal":{"name":"3rd International Symposium on Environmental Friendly Energies and Applications (EFEA)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114795676","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}
{"title":"Materials in renewable energy technologies: Use of Chitosan based-materials for water treatment","authors":"Fella‐Naouel Allouche, E. Guibal, N. Mameri","doi":"10.1109/EFEA.2014.7059981","DOIUrl":"https://doi.org/10.1109/EFEA.2014.7059981","url":null,"abstract":"Chitosan is naturally bio-polymer obtained through chitin deacetylation. Chitosan can be molded in several shapes, such as membranes, microspheres, gel beads and films, and is able to use for wide application including food and nutrition, cosmetic, pharmaceutical, biomedicai, water treatment and other purposes. The aim of this work was to characterize the properties of biopolymer prepared by freeze-drying technique. Cylindrical foams were formed and then characterized and tested for their ability to water treatment. The surface morphology and topographic analysis of the polymer samples was examined by Scanning Electron Microscope and Fourier transform infrared spectroscopy (FTIR) was investigated.","PeriodicalId":129568,"journal":{"name":"3rd International Symposium on Environmental Friendly Energies and Applications (EFEA)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116628039","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}
{"title":"Electrical motor testing station with electromagnetic load emulator: An overview of design, construction and calibration with examples of use","authors":"Rosic Marko, Bozic Milos, Bjekic Miroslav, Ristic Leposava","doi":"10.1109/EFEA.2014.7059959","DOIUrl":"https://doi.org/10.1109/EFEA.2014.7059959","url":null,"abstract":"The aim of this paper is to present the station for electrical motor testing with its potentials. The main part of the station is an electromagnetic emulator of load. The Electromagnetic Load Emulator (ELE) is designed to be an adjustable load of an electric motor. The paper also describes a detailed procedure of design, construction and calibration, as well as the working principle and examples of using the station for electrical motor testing with electromagnetic load emulator.","PeriodicalId":129568,"journal":{"name":"3rd International Symposium on Environmental Friendly Energies and Applications (EFEA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130558925","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}
V. M. C. Damjanović, J. Burazer, M. Stamenić, Dorde S. Cantrak, M. Lečić
{"title":"Architectural design influences and HVAC systems' measures on energy savings of a high energy demand residential building","authors":"V. M. C. Damjanović, J. Burazer, M. Stamenić, Dorde S. Cantrak, M. Lečić","doi":"10.1109/EFEA.2014.7059986","DOIUrl":"https://doi.org/10.1109/EFEA.2014.7059986","url":null,"abstract":"This paper discusses the energy saving measures for a residential building in Belgrade, Serbia, by investigating the influences of architectural measures and HVAC systems' measures on its energy performance. The residential building selected for this case study is a high energy consumption house with challenging ventilation requirements, located on a narrow and inclined site with particularly obstructed orientation for its climate zone. Simultaneously, this paper accentuates inaccuracies of energy efficiency regulations in Serbia that merely monitor energy consumption for heating and not at all for ventilation. The PHPP2007 software of the Passive House Institute, Darmstadt, Germany, was used in this research for the reason that it operates with the entirety of energy consumption measures. It allowed demonstrating the results of systematic computer simulations and energy performance studies conducted for a period of one year for the residential building selected and in climate conditions of the Belgrade region.","PeriodicalId":129568,"journal":{"name":"3rd International Symposium on Environmental Friendly Energies and Applications (EFEA)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116249961","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}
{"title":"A software tool for optimising structural and material configurations of wind turbine adaptive blades","authors":"Hui Zhang, A. Maheri","doi":"10.1109/EFEA.2014.7059972","DOIUrl":"https://doi.org/10.1109/EFEA.2014.7059972","url":null,"abstract":"In a decoupled design method for bend-twist adaptive blades the optimum induced twist at a reference operating condition is obtained in the aerodynamic design phase. In the structural design phase, the structural and material configuration need to be found such that the elastic coupling in the blade produces the desired induced twist obtained in the aerodynamic design phase. For this purpose, a software tool is required by which designer can easily define various elastic coupling configurations and then analyse the adaptive blade response in terms of the produced induced twist at given reference point. This paper presents a software tool for this purpose. In this software tool, the suction and pressure sides of the blade as well as its webs are assumed to be constructed by a number of trapezoid material patches. Each patch can have its own material characteristics and layup configuration. A complete decoupled design will become efficient by combining this software tool with a developed analytical beam model and as well as an aerodynamic performance evaluation code.","PeriodicalId":129568,"journal":{"name":"3rd International Symposium on Environmental Friendly Energies and Applications (EFEA)","volume":"223 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122517824","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}
{"title":"Performances of AC induction motors with different number of poles in urban electric cars","authors":"Kanber Sedef, A. Maheri, M. Yilmaz, A. Daadbin","doi":"10.1109/EFEA.2014.7059946","DOIUrl":"https://doi.org/10.1109/EFEA.2014.7059946","url":null,"abstract":"This paper presents the results of a study on the effect of the number of poles of AC induction motors (IM) on their performance in both propulsion and regenerative brake modes in eco-urban electric cars (EC). Since changing the number of poles affects the maximum motor speed, different transmission ratios are considered in modelling of the powertrain system. Two speed profiles, namely, normal and aggressive, are used in this study. Both profiles are based on the field data of a route in Kayseri-Turkey. For each configuration the total consumed energy of the EC is found. Results show that IM with 4 poles performs better than other configurations with respect to the cost and energy efficiency.","PeriodicalId":129568,"journal":{"name":"3rd International Symposium on Environmental Friendly Energies and Applications (EFEA)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122195815","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}
{"title":"Improvement of power quality of wind-FC energy power hybrid system connected to network","authors":"S. Arezki, M. Boudour","doi":"10.1109/EFEA.2014.7059996","DOIUrl":"https://doi.org/10.1109/EFEA.2014.7059996","url":null,"abstract":"Among distributed generation, wind power generation with a variable speed device based on a doubly-fed induction machine used in generating mode (DFIG) is widely utilized with a hybrid energy technology. The control of blade pitch angle is a necessary part of variable speed wind turbines since by controlling the pitch angle, the aerodynamic power that flows through to the generator can be adjusted using the PI controller. In hybrid systems, fuel cell generator may be used as a source. Fuel cells are very attractive to be used with intermittent sources of energy, because of high efficiency, fast load response, modularity and fuel flexibility. This paper introduces hybrid wind (WG)/Fuel Cell (FC) alternative energy system for sustained power generation. The variable speed operation in such wind turbines is achieved by means of a dc-ac multi-level power converter among the rotor winding through fuel cell generator and the stator is directly connected to the grid while battery can meet the load demand above the maximum power available from the FC system for short durations. The aim of this design is minimization of overall cost of generation scheme. Based on simulation results, Dynamic behavior of voltage, power, torque, etc. has been studied. It has been found that these renewable resources would be a feasible solution for distributed generation of electric power for stand-alone applications at remote locations.","PeriodicalId":129568,"journal":{"name":"3rd International Symposium on Environmental Friendly Energies and Applications (EFEA)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127230124","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}
N. Tanasić, G. Jankes, M. Stamenić, A. Nikolic, Marta Trnini, T. Simonović
{"title":"Potentials for reducing primary energy consumption through energy audit in the packaging paper factory","authors":"N. Tanasić, G. Jankes, M. Stamenić, A. Nikolic, Marta Trnini, T. Simonović","doi":"10.1109/EFEA.2014.7059957","DOIUrl":"https://doi.org/10.1109/EFEA.2014.7059957","url":null,"abstract":"Energy audit is a primary step towards a more rational use of primary energy sources in the energy-intensive process such as the production of packaging paper. By the adoption of the Law on efficient use of energy in 2013, energy audits have become mandatory for all industrial companies in Serbia. This paper presents the methodology and results of the one-day energy audit which was conducted in the Paper Factory - Belgrade (FHB). The measures to increase energy efficiency of the production process, together with the quantification of the savings in the primary energy consumption, are proposed based on the results of the study.","PeriodicalId":129568,"journal":{"name":"3rd International Symposium on Environmental Friendly Energies and Applications (EFEA)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124287561","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}
{"title":"Fault tolerant control design based higher-order sliding mode control for Internal Combustion engine","authors":"N'doye Bada, Sonane Ahmed Ali, N. Langlois","doi":"10.1109/EFEA.2014.7059949","DOIUrl":"https://doi.org/10.1109/EFEA.2014.7059949","url":null,"abstract":"In this paper we present a passive fault tolerant control strategy for the Internal Combustion air path. This strategy is carried out under the concept of Higher Order Sliding Mode Control (HOSMC). The proposed fault tolerant strategy incorporates a Super-Twisting controller which handles parametric uncertainties and actuator failures. In this paper we consider two types of actuator failures, additive and loss-of-effectiveness faults., theoretical results on the convergence of the proposed controller based on the Lyapunov theory are derived. The simulations of the proposed controller on a recently validated experimental air path internal combustion model, show good results for actuator failures conditions even in the presence of uncertainties on model parameters.","PeriodicalId":129568,"journal":{"name":"3rd International Symposium on Environmental Friendly Energies and Applications (EFEA)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125703034","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}
{"title":"Aerodynamic design of wind turbine blades considering manufacturing constraints","authors":"Nearchos Stylianidis, T. Macquart, A. Maheri","doi":"10.1109/EFEA.2014.7059984","DOIUrl":"https://doi.org/10.1109/EFEA.2014.7059984","url":null,"abstract":"The present paper investigates the aerodynamic design of wind turbine blades while considering manufacturing constraints. Blade topologies achieved by unconstrained optimisation methods are likely to lose optimality after manufacturing simplifications are applied. The present paper proposes and evaluates the performance of an optimisation method for wind turbine blades while considering manufacturing constraints. The optimal solution achieved this way is manufacturing-ready. In addition, integrating manufacturing design knowledge into the optimisation is shown to significantly reduce the design space, and therefore the time taken by the optimisation algorithm. While the proposed method herein is described for a standalone aerodynamic optimisation, it can also be used for aero-structural optimisations.","PeriodicalId":129568,"journal":{"name":"3rd International Symposium on Environmental Friendly Energies and Applications (EFEA)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128488298","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}