{"title":"Optimal selection of the distribution and motor voltages in mineral stockyards","authors":"J. Toraño, M. Menéndez, R. Rodríguez, I. Diego","doi":"10.1109/IAS.2003.1257777","DOIUrl":"https://doi.org/10.1109/IAS.2003.1257777","url":null,"abstract":"The objective is to compare the electrical feeding of conveyor belts in material handling stockyards in low and medium voltage, finding the relations between power, distance and feeding voltage. Several programs and data bases were developed in order to calculate electrical materials and cost. Cost comparison between different technical solutions in low and medium voltages will guide us to the optimal selection of the voltage level, depending on power of each electrical load and distance to the electrical substation.","PeriodicalId":288109,"journal":{"name":"38th IAS Annual Meeting on Conference Record of the Industry Applications Conference, 2003.","volume":"34 15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131796453","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":"Standstill position estimation of delta coupled synchronous motors","authors":"T. Nef, J. Persson, Y. Perriard","doi":"10.1109/IAS.2003.1257787","DOIUrl":"https://doi.org/10.1109/IAS.2003.1257787","url":null,"abstract":"Sensorless control is quickly becoming a standard solution for brushless permanent magnet motors. For a controlled start-up, it is important to know the rotor position at standstill This paper presents a new solution making it possible to estimate the rotor position by tracking the spatial inductance variation of delta coupled synchronous toothless motors.","PeriodicalId":288109,"journal":{"name":"38th IAS Annual Meeting on Conference Record of the Industry Applications Conference, 2003.","volume":"50 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120968498","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}
A. MpandaMabweBadileshi, D. Cristian, G. Capolino, H. Henao
{"title":"Detection of induction machines anomalies using stand-still tests","authors":"A. MpandaMabweBadileshi, D. Cristian, G. Capolino, H. Henao","doi":"10.1109/IAS.2003.1257821","DOIUrl":"https://doi.org/10.1109/IAS.2003.1257821","url":null,"abstract":"The main topic of this paper is to examine the feasibility of detecting the rotor defaults of induction motors by performing stand-still tests. We show that feeding the machine with special excitation signals (discrete interval binary sequence (DIBS) and multisine), it is possible to excite with low frequency resolution the faulty modes by analyzing the current spectrum and the dispersion flux captured by a flux sensor. The method presented is general and may be applied to the induction machine whilst in rotation or at standstill. It is based on broadband excitation signals which are able to excite the faulty modes of devices under tests. Experimental measurements are made both on healthy and faulty machines and the comparison gives a difference in the flux and current machine signatures which is basically the most commonly used method of fault detection.","PeriodicalId":288109,"journal":{"name":"38th IAS Annual Meeting on Conference Record of the Industry Applications Conference, 2003.","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129978961","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":"H/spl infin/ adaptive fuzzy control technique for high performance drives: practical implementation","authors":"A. Rubaai, D. Cobbinah, M.F. Chouika","doi":"10.1109/IAS.2003.1257603","DOIUrl":"https://doi.org/10.1109/IAS.2003.1257603","url":null,"abstract":"A novel design technique for high performance drives employing both H/spl infin/ optimal control and fuzzy control is proposed in this paper. The fuzzy control design is equipped with an adaptive learning algorithm to achieve H/spl infin/ tracking performance with external disturbances. It gives elevation to the selection of optimal performance weights without any trial and error attempt. The idea is to establish a link between H/spl infin/ optimal control design and fuzzy control design, so as to provide H/spl infin/ tracking design with more intelligence and achieve better performance with fuzzy control design. The effect of both fuzzy logic approximation error and external disturbance on the tracking error is attenuated to an assigned level. The control strategy does not require explicit knowledge of the motor/load dynamics, which is a useful feature when dealing with parameter and load uncertainties. The robustness of the proposed methodology is displayed for different types of trajectories. Experimental and simulation results suggest that the effect of both the fuzzy approximation error and external disturbance on the tracking error can be attenuated efficiently by the H/spl infin/ adaptive fuzzy control. Accordingly, the proposed design method is suitable for the robust tracking control of the uncertain nonlinear drive systems and is an attractive control design philosophy. Test results obtained indicate excellent tracking performance for both speed and position. Test results illustrate the validity of the proposed approach.","PeriodicalId":288109,"journal":{"name":"38th IAS Annual Meeting on Conference Record of the Industry Applications Conference, 2003.","volume":"148 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128343809","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":"Plasma displays for digital broadcasting","authors":"F. Sato, T. Kurita","doi":"10.1109/IAS.2003.1257482","DOIUrl":"https://doi.org/10.1109/IAS.2003.1257482","url":null,"abstract":"Television in Japan will change largely by digitalization using satellite, cable, and terrestrial channel (ISDB: Integrated Services Digital Broadcasting), where high-definition television (HDTV) is the basic infrastructure. Large screen, higher picture quality than the conventional ones, and low power consumption features are required for displays for digital broadcasting. Plasma displays (PDPs) are the most promising displays from viewpoints of flatness, large screen and picture quality compared with other current displays at present. Some characteristics such as power consumption, cost, and pixel number are expected to be improved.","PeriodicalId":288109,"journal":{"name":"38th IAS Annual Meeting on Conference Record of the Industry Applications Conference, 2003.","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130819460","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}
C. Edrington, D.C. Kaluvagunta, J. Joddar, B. Fahimi
{"title":"Investigation of electromagnetic force components in SR machines: design and control issues","authors":"C. Edrington, D.C. Kaluvagunta, J. Joddar, B. Fahimi","doi":"10.1109/IAS.2003.1257506","DOIUrl":"https://doi.org/10.1109/IAS.2003.1257506","url":null,"abstract":"This paper presents the results of an investigation on components of the electromagnetic force in the airgap of an 8/6 switched reluctance machine (SRM). Using Maxwell stress method variations of radial and tangential force components with respect to saliency of the machine and saturation effects have been studied. Access to distribution of the force components acting on the rotor and stator enables us to provide a more accurate picture of the torque generation and vibration in this family of electric machines. Furthermore, distribution of magnetic forces under multiphase excitation has been studied in details. Our findings show that bipolar excitation of SRM phases, resulting in a short flux path magnetic circuit, favors its efficiency and power quality while generating slightly higher torque with less pulsation. This is a significant improvement especially for automotive current intensive applications where the difference in price of power electronics components can be justified. An experimental, 2 kW, 42 Volts, 8/6 SRM drive which has been designed and manufactured in our energy system laboratory was targeted for this study. In addition to our extensive finite element (FE) analysis, experimental work is being carried out on our motor to validate some of the findings of this investigation.","PeriodicalId":288109,"journal":{"name":"38th IAS Annual Meeting on Conference Record of the Industry Applications Conference, 2003.","volume":"329 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132981719","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":"Control and test of dynamic voltage restorer on the medium voltage grid","authors":"J. G. Nielsen, H. Nielsen, F. Blaabjerg","doi":"10.1109/IAS.2003.1257651","DOIUrl":"https://doi.org/10.1109/IAS.2003.1257651","url":null,"abstract":"Power quality problems like voltage dips and sags are presently important issues in the utilities. Major economic losses might appear at the customers due to those failures. This paper presents a power electronic device, which keeps voltage sags away from sensitive loads. It is a dynamic voltage restorer (DVR), which creates a series injection of voltage into the medium voltage grid. Energy storage is keeping the sensitive load running in a limited time. The design and a new control method of a DVR are explained in this paper. The DVR is also tested at medium voltage level (10 kV) and methods to initiate voltage dips are described and implemented. Different test results at 10 kV level show that the DVR keep the voltage to a sensitive load fixed in the case of voltage dips. Furthermore, it is also demonstrated that in the case of a transformer failure the system also works very fine.","PeriodicalId":288109,"journal":{"name":"38th IAS Annual Meeting on Conference Record of the Industry Applications Conference, 2003.","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134486006","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 error analysis of the sensorless position estimation for BLDC motors","authors":"Taehyung Kim, M. Ehsani","doi":"10.1109/IAS.2003.1257564","DOIUrl":"https://doi.org/10.1109/IAS.2003.1257564","url":null,"abstract":"This paper presents a novel sensorless operation technique for brushless DC (BLDC) motors and a new approach of error analysis for the sensorless BLDC motor drive. The analysis breaks down the estimated position error to its fundamental elements in the BLDC motor drive system. The position estimation error decreases the motor efficiency and produces torque pulsation. In this paper, the new approach is introduced to analyze the errors inherent in sensorless drive systems. The analysis method presented in this paper are a useful guideline for practical design of a sensorless BLDC motor drive. The same basic approach can be applied to evaluate other indirect position estimation methods for AC motors.","PeriodicalId":288109,"journal":{"name":"38th IAS Annual Meeting on Conference Record of the Industry Applications Conference, 2003.","volume":"349 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134379256","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}
Xudong Huang, E. Pepa, J. Lai, Shaotang Chen, T. Nehl
{"title":"Three-phase inverter differential mode EMI modeling and prediction in frequency domain","authors":"Xudong Huang, E. Pepa, J. Lai, Shaotang Chen, T. Nehl","doi":"10.1109/IAS.2003.1257848","DOIUrl":"https://doi.org/10.1109/IAS.2003.1257848","url":null,"abstract":"This paper describes a frequency domain approach to the prediction of differential mode (DM) conducted electromagnetic interference (EMI) for a three-phase inverter at the early design stage. The approach is able to calculate the DM conducted EMI with more accurate noise source and parasitic path identification. The DM noise sources are identified as three device switching current and their frequency domain expressions are derived according to inverter operating principle. The parasitic components are identified using FEM analysis. The calculated DM EMI result is compared with experimental data and it can predict the high frequency resonant peak precisely. It is indicated that the frequency domain analysis with accurate noise source and parasitic modeling is an effective tool for DM EMI prediction for three-phase inverter circuit.","PeriodicalId":288109,"journal":{"name":"38th IAS Annual Meeting on Conference Record of the Industry Applications Conference, 2003.","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131961480","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}
A. Bellini, C. Concari, F. Filippetti, G. Franceschini, E. Lorenzani, C. Tassoni, H. Toliyat
{"title":"Induction motors diagnosis using deceleration test, a possible improvement","authors":"A. Bellini, C. Concari, F. Filippetti, G. Franceschini, E. Lorenzani, C. Tassoni, H. Toliyat","doi":"10.1109/IAS.2003.1257824","DOIUrl":"https://doi.org/10.1109/IAS.2003.1257824","url":null,"abstract":"Noninvasive diagnosis of incipient or actual faults of grid supplied induction machine is a well known technology. Motor current signature analysis (MCSA) can be used for rotor and stator defects. These include stator current harmonics at frequencies (1 /spl plusmn/ 2s) f and also determining the negative sequence component of current space vector. Deceleration tests which possibly can remove several drawbacks of MCSA have been proposed for rotor and stator fault diagnosis. This paper attempts to compare the MCSA-based diagnostic procedures with the results obtained using the deceleration tests. Experimental results show that although the deceleration test does not provide clear information on rotor defects, it provides a diagnostic index directly related to the percentage of shorted turns. This diagnostic index can be used to validate the MCSA-based diagnostic procedure.","PeriodicalId":288109,"journal":{"name":"38th IAS Annual Meeting on Conference Record of the Industry Applications Conference, 2003.","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133805210","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}