{"title":"Investigation of the microwave electromagnetic field attenuation effect in the discharge chamber of a resonant type plasmatron","authors":"S. Bordusau, S. Madveika, A. Dostanko","doi":"10.1109/OPTIM.2012.6231952","DOIUrl":"https://doi.org/10.1109/OPTIM.2012.6231952","url":null,"abstract":"The investigation of the microwave energy penetration (f = 2,45 ± 0,05 GHz) in the center of the oxygen gas discharge in the resonant type plasmatron was carried out on the example of microwave plasma-chemical processing of silicon plates. The investigation was performed by three independent methods: using a thermocouple for investigating temperature characteristics of the microwave discharge; according to the data of the \"active probe\" which was injected into the volume of discharge chamber; using an electric probe which was placed in the volume of plasma for measuring the electrical conductivity of the space. The experimental results indicate that for the levels of microwave power flux density in the discharge volume ranging within 0.06-0.08 W/cm3 the microwave field is entered into the volume of the discharge zone. This effect must be taken into account when organizing the processes of plasma-chemical treatment (the influence of microwave field on the parameters of the processed structures, explanation of \"loading effect\", when chosen construction of a system for supplying microwave energy to the treatment area, in the analysis forms and character of microwave field distribution in the gas discharge area, etc.) and for analysing the results of processing of materials and semiconductor structures which may be exposed to microwave energy.","PeriodicalId":382406,"journal":{"name":"2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134366438","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":"Inductance calculation and layout optimization for planar spiral inductors","authors":"C. Pacurar, V. Topa, A. Racasan, C. Munteanu","doi":"10.1109/OPTIM.2012.6231846","DOIUrl":"https://doi.org/10.1109/OPTIM.2012.6231846","url":null,"abstract":"The inductance calculation and the layout optimization for spiral inductors still are research topics of actuality and very interesting especially in radio frequency integrated circuits. Our research work is fixed on the vast topics of this research area. In this effect we create a software program dedicate to dc inductance calculation and to layout optimization for spiral inductors. We use a wide range of inductors in the application made with our program; we compare our applications results with measurements results existing in the literature and with three-dimensional commercial field solver results in order to validate it. Our program is accurate enough, has a very friendly interface, is very easy to use and its running time is very sort compared with other similar programs. Since spiral inductors tolerance is generally on the order of several percent, a more accurate program is not needed in practice. The program is very useful for the spiral inductor design because it calculates the inductance of spiral inductors with a very good accuracy and also for the spiral inductor optimization, because it optimize the spiral inductor layouts in terms of technological restrictions and/or in terms of the designers' needs.","PeriodicalId":382406,"journal":{"name":"2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129091232","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":"An enhanced three-phase battery energy storage system for frequency control in microgrids","authors":"I. Serban, C. Marinescu","doi":"10.1109/OPTIM.2012.6231960","DOIUrl":"https://doi.org/10.1109/OPTIM.2012.6231960","url":null,"abstract":"This paper presents a three-phase battery energy storage system (BESS) operating in both microgrid (MG) connected and islanded modes. When connected to the MG, an enhanced frequency controller, covering the main two frequency control levels, i.e. primary and secondary, governs the BESS active power. If the MG power quality worsens below a certain level, the system is able to switch in island mode and to supply the local loads. The reconnection is accomplished only after the BESS voltage is smoothly resynchronized with the MG voltage. The proposed control solution for a three-phase BESS is assessed by means of computer simulations.","PeriodicalId":382406,"journal":{"name":"2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134153695","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":"Intelligent object anchoring using relative anchors","authors":"T. Heyer, A. Graser","doi":"10.1109/OPTIM.2012.6231775","DOIUrl":"https://doi.org/10.1109/OPTIM.2012.6231775","url":null,"abstract":"Object anchoring is a very important and useful concept, especially for robotic systems which use two different levels to represent objects, symbolic and sub-symbolic. The right sub-symbolic information acquired from sensors have to be combined with the symbolic description that points to the same physical object which is often a time-consuming and error-prone procedure, e.g. due to unsuccessful detection using machine vision. In this paper an extension of this anchoring concept is given using relative anchors which presents an intelligent object representation and allows the reduction of necessary machine vision operations. Also the inaccuracies given by the algorithms used for detection are taken into account and used to enhance the object anchoring. The concept is evaluated on a robotic system in a library scenario and the benefit is presented.","PeriodicalId":382406,"journal":{"name":"2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM)","volume":"79 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132801211","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":"Optimization of a multi-target voltages switched capacitor converter","authors":"N. Krihely, S. Ben-Yaakov, A. Fish","doi":"10.1109/OPTIM.2012.6231922","DOIUrl":"https://doi.org/10.1109/OPTIM.2012.6231922","url":null,"abstract":"In this paper, an efficient voltage scalable switched capacitor converter (SCC) for 1.1V battery-powered system is presented. The SCC employs a binary resolution technique to step-down the input voltage to a range of voltages, while keeping the efficiency high. An optimization strategy for designing multi-topology SCC is presented to improve the effectiveness of the circuit and to preserve efficiency over large load voltages.","PeriodicalId":382406,"journal":{"name":"2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM)","volume":"437 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133521316","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}
L. Ogiboski, A. C. Cunha, C. Kajikawa, L. Magrini, J. Jardini
{"title":"Development and installation of a data acquisition and monitoring system to gas insulated substation","authors":"L. Ogiboski, A. C. Cunha, C. Kajikawa, L. Magrini, J. Jardini","doi":"10.1109/OPTIM.2012.6231786","DOIUrl":"https://doi.org/10.1109/OPTIM.2012.6231786","url":null,"abstract":"Gas Insulated Substations (GIS) are important equipment to power industry, mainly because of its compactness and robustness. This kind of substation uses SF6 (sulfur hexafluoride) gas as dielectric due to its feature, but on the other hand, SF6 is the most powerful greenhouse gas. Based on the importance of this gas to the power systems and its environmental damages, this research proposes a monitoring system to check gas quality and gas leakages in a GIS. The aim was to develop a low cost system to collect status data and record in a historical database. The latest results expose the development and installation of the acquisition e monitoring system in three bays of a GIS. With the implementation of the system is expected to improve the gas quality management and also improvements on gas leakage detection and location.","PeriodicalId":382406,"journal":{"name":"2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM)","volume":"36 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114094310","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":"Induction motors with squirrel cage rotor, with IE2 efficiency level, up to 18.5 kW. methods for increasing the efficiency","authors":"I. Peter","doi":"10.1109/OPTIM.2012.6231888","DOIUrl":"https://doi.org/10.1109/OPTIM.2012.6231888","url":null,"abstract":"As it is known, the induction motors with squirrel cage rotor are classified according to IEC 60034-30:2008 in three efficiency classes: a. Standard Efficiency IE1; b. High Efficiency IE2; c. Premium Efficiency IE3. According to the ecodesign requirements, since 16 June 2011 motors shall not be less efficient than IE2 efficiency level. The motor manufacturers are obliged to comply with this requirement, developing the IE2 variant. This paper refers to the mode of execution of these motors, to the applied technical solutions and to the obtained results.","PeriodicalId":382406,"journal":{"name":"2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121590083","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}
D. Csipkes, G. Csipkes, P. Faragó, H. Fernandez-Canque, S. Hintea
{"title":"An OTA-C field programmable analog array for multi-mode filtering applications","authors":"D. Csipkes, G. Csipkes, P. Faragó, H. Fernandez-Canque, S. Hintea","doi":"10.1109/OPTIM.2012.6231881","DOIUrl":"https://doi.org/10.1109/OPTIM.2012.6231881","url":null,"abstract":"This paper presents a reconfigurable analog array and its possible application in multi mode wireless communication equipments. The array is built around configurable analog blocks comprised of linearized, fully differential transconductance amplifiers. The circuit sacrifices a degree of generality in favor of specialized filtering operations at high frequencies, low consumption and good linearity, all required in modern communication devices. The programming of the filter frequency parameters is achieved through binary weighted transconductor arrays and a capacitance scaling circuit. The proposed analog array has been simulated at transistor level by using the Eldo simulation engine on a 90nm digital CMOS process.","PeriodicalId":382406,"journal":{"name":"2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123678892","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":"Analysis of induction machine T and Γ circuit coequality for use in electric drive controllers","authors":"S. Fligl, J. Bauer, M. Vlcek, J. Lettl","doi":"10.1109/OPTIM.2012.6231923","DOIUrl":"https://doi.org/10.1109/OPTIM.2012.6231923","url":null,"abstract":"This paper examines the problem of adequacy in induction machine modeling and attempts to provide a firmer basis for the selection of an appropriate model, to find a possible connection between the two most widespread models and to confirm or disprove their equivalence or differentness as the case may be.","PeriodicalId":382406,"journal":{"name":"2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123900056","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":"Leakage current measurement in transformerless PV inverters","authors":"T. Kerekes, D. Sera, L. Mathe","doi":"10.1109/OPTIM.2012.6231835","DOIUrl":"https://doi.org/10.1109/OPTIM.2012.6231835","url":null,"abstract":"Photovoltaic (PV) installations have seen a huge increase during the last couple of years. Transformerless PV inverters are gaining more share of the total inverter market, due to their high conversion efficiency, small weight and size. Nevertheless safety should have an important role in case of these tranformerless systems, due to the missing galvanic isolation. Leakage and fault current measurement is a key issue for these inverter topologies to be able to comply with the required safety standards. This article presents the test results of two different current measurement sensors that were suggested to be used in commercial PV inverters for the measurement of leakage and fault ground currents. The German VDE0126–1–1 standard gives the limit for fault and leakage ground currents and all grid connected PV inverters have to comply with these limits and disconnect from the grid in case of a fault.","PeriodicalId":382406,"journal":{"name":"2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121431758","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}