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Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting最新文献

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Calculation of slip energy recovery induction motor drive behavior using the equivalent circuit 利用等效电路计算转差能量回收感应电动机的驱动行为
Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting Pub Date : 1992-10-04 DOI: 10.1109/IAS.1992.244471
P. Pillay, L. Refoufi
{"title":"Calculation of slip energy recovery induction motor drive behavior using the equivalent circuit","authors":"P. Pillay, L. Refoufi","doi":"10.1109/IAS.1992.244471","DOIUrl":"https://doi.org/10.1109/IAS.1992.244471","url":null,"abstract":"A transformer-type equivalent model for the calculation of the steady-state performance of a slip energy recovery induction motor drive with a step down chopper in the DC link is described. Experimental data on RMS currents, power, reactive power, and overall efficiency satisfactorily correlate with calculations over most of the operating speed range. Also, detailed calculations of rotor, stator, and supply harmonic currents due to the rectifier and inverter actions are performed using the conventional version of the equivalent circuit. The computed and measured instantaneous current waveforms show satisfactory agreement except at a slip of 1/6 where significant deviations appear. This effect is adequately compensated for by using a more rigorous model.<<ETX>>","PeriodicalId":110710,"journal":{"name":"Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122469111","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: 22
Application of statistical clustering to mathematical description and control of continuous processes with discrete event output 统计聚类在具有离散事件输出的连续过程的数学描述和控制中的应用
Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting Pub Date : 1992-10-04 DOI: 10.1109/IAS.1992.244232
V. Skormin
{"title":"Application of statistical clustering to mathematical description and control of continuous processes with discrete event output","authors":"V. Skormin","doi":"10.1109/IAS.1992.244232","DOIUrl":"https://doi.org/10.1109/IAS.1992.244232","url":null,"abstract":"Statistical clustering is used for the mathematical description of continuous manufacturing processes with discrete event outputs. The resultant mathematical model defines the correspondence between various outcomes of the process and particular regions in the space of process variables. An adaptive version of the clustering model intended for online implementation is presented. Prediction, regime selection, and control procedures, utilizing the clustering model, are formulated.<<ETX>>","PeriodicalId":110710,"journal":{"name":"Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114576693","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
Development of expert system knowledge base to on-line diagnosis of rotor electrical faults of induction motors 异步电动机转子电气故障在线诊断专家系统知识库的开发
Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting Pub Date : 1992-10-04 DOI: 10.1109/IAS.1992.244459
F. Filippetti, M. Martelli, G. Franceschini, C. Tassoni
{"title":"Development of expert system knowledge base to on-line diagnosis of rotor electrical faults of induction motors","authors":"F. Filippetti, M. Martelli, G. Franceschini, C. Tassoni","doi":"10.1109/IAS.1992.244459","DOIUrl":"https://doi.org/10.1109/IAS.1992.244459","url":null,"abstract":"The authors consider the development of a knowledge base branch related to rotor electrical faults in squirrel cage machines, to be implemented in an expert system (ES), utilizing instantaneous values as input data. The knowledge base is organized in two levels: in the first level diagnostic indexes for the orientation of the ES inference engine toward the appropriate branch of the fault tree are utilized. The second level includes the deep knowledge with a data set obtained on the basis of a complete faulty machine model. The diagnostic indexes of the first level concern how to distinguish faulty events from the healthy signals due to the unavoidable manufacturing asymmetries. They are pointed out through a simplified model of a faulted rotor that needs few machine parameters. Some diagnosis examples are reported to describe the sequence of operations of the diagnostic system.<<ETX>>","PeriodicalId":110710,"journal":{"name":"Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123810117","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: 141
Modeling, analysis and control of static VAr compensator using three-level inverter 基于三电平逆变器的静态无功补偿器建模、分析与控制
Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting Pub Date : 1992-10-04 DOI: 10.1109/IAS.1992.244310
G. Cho, N. Choi, C. Rim, G. Cho
{"title":"Modeling, analysis and control of static VAr compensator using three-level inverter","authors":"G. Cho, N. Choi, C. Rim, G. Cho","doi":"10.1109/IAS.1992.244310","DOIUrl":"https://doi.org/10.1109/IAS.1992.244310","url":null,"abstract":"A novel static VAr compensator (SVC) system using a three-level inverter is proposed for high-voltage and high-power applications. A general and simple model for the overall system is obtained using the circuit DQ-transform, and DC and AC analyses are performed to characterize the open-loop system. Using the proposed model, a novel control method which controls both the phase angle and the modulation index of the switching pattern simultaneously is suggested to provide fast response of the SVC system without using the independent voltage source. Predicted results are verified by computer simulation.<<ETX>>","PeriodicalId":110710,"journal":{"name":"Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting","volume":"313 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123494703","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: 39
The influence of winding capacitance on high frequency time harmonic losses in induction motors 绕组电容对感应电动机高频时谐波损耗的影响
Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting Pub Date : 1992-10-04 DOI: 10.1109/IAS.1992.244468
Dustin J Maly, D. Novotny, Cynthia A. Thompson
{"title":"The influence of winding capacitance on high frequency time harmonic losses in induction motors","authors":"Dustin J Maly, D. Novotny, Cynthia A. Thompson","doi":"10.1109/IAS.1992.244468","DOIUrl":"https://doi.org/10.1109/IAS.1992.244468","url":null,"abstract":"An experimental study of motor current and power for time harmonic frequencies up to 100-200 kHz has been carried out. It is shown that motor losses can be significantly increased at frequencies above the first resonance by the very nonuniform voltage distribution along the winding turns. Tests on small motors (up to ten horsepower) indicate that the first resonance can occur as low as 20 kHz but is more typically in the range of 50-70 kHz. The tests also demonstrate that equivalent magnetic connections, i.e., series vs. parallel connection for dual voltage motor designs, can have very different high-frequency characteristics and that variations in system grounding result in significant changes in resonant frequencies and losses.<<ETX>>","PeriodicalId":110710,"journal":{"name":"Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123524546","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
A dynamic electro-thermal model for the IGBT IGBT的动态电热模型
Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting Pub Date : 1992-10-04 DOI: 10.1109/IAS.1992.244425
Allen R. Hefner
{"title":"A dynamic electro-thermal model for the IGBT","authors":"Allen R. Hefner","doi":"10.1109/IAS.1992.244425","DOIUrl":"https://doi.org/10.1109/IAS.1992.244425","url":null,"abstract":"A physics-based dynamic electrothermal model is developed for the insulated-gate bipolar transistor (IGBT) by coupling a temperature-dependent IGBT electrical model with dynamic thermal models for the IGBT silicon chip, packages, and heatsinks. The temperature-dependent IGBT electrical model describes the instantaneous electrical behavior in terms of the instantaneous temperature of the IGBT silicon chip surface. The thermal models determine the evolution of the temperature distribution within the thermal network and thus the instantaneous value of the silicon chip surface temperature used by the electrical model. The model is implemented in the Saber circuit simulator. The IGBT dynamic electrothermal model and the thermal network component models are verified for the range of temperature and power dissipation levels (heating rates) that are important for power electronic systems.<<ETX>>","PeriodicalId":110710,"journal":{"name":"Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting","volume":"84 1-2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123525931","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: 206
Transmission line design for detonating exploding bridge wires 导爆桥线传输线设计
Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting Pub Date : 1992-10-04 DOI: 10.1109/IAS.1992.244198
N. Younan, R. Valencia
{"title":"Transmission line design for detonating exploding bridge wires","authors":"N. Younan, R. Valencia","doi":"10.1109/IAS.1992.244198","DOIUrl":"https://doi.org/10.1109/IAS.1992.244198","url":null,"abstract":"A common way to directly initiate explosives is the use of exploding bridge wire devices. A critical factor for detonating a bridge wire is the energy provided from the firing set. The amount of energy transmitted depends mainly on both the firing system and the shooting line parameters. A design procedure that optimizes the firing set parameters so that proper detonation occurs is developed. Transmission line theory is employed to develop a formulation to determine the bridge wire current and/or the burst current in terms of the firing set parameters. Measurements showed that a coaxial shooting line performs substantially better than a two-wire line. It is shown that the line length is an important factor in the occurrence of misfires.<<ETX>>","PeriodicalId":110710,"journal":{"name":"Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121286707","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
Automated rock dusting controllers 自动岩石除尘控制器
Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting Pub Date : 1992-10-04 DOI: 10.1109/IAS.1992.244200
R. Cortese, M. Sapko, H. Perlee
{"title":"Automated rock dusting controllers","authors":"R. Cortese, M. Sapko, H. Perlee","doi":"10.1109/IAS.1992.244200","DOIUrl":"https://doi.org/10.1109/IAS.1992.244200","url":null,"abstract":"The development of a device to detect a hazardous coal dust layer and automatically start rock-dusting concentrations to render the coal layer nonflammable is discussed. The controller makes use of a float dust deposition meter (FDDM) for measuring the thickness of deposited dust. The research consisted of three phases. In the first phase, the process was modeled using Monte Carlo methods and previously obtained statistical values of the model parameters to demonstrate the feasibility of the concept and provide experimental design criteria for the subsequent experiments. In the second phase, laboratory-scale experiments were conducted using the FDDM to measure the optical reflectivity of multiple strata of alternate rock dust and coal dust float dust layers as a function of layer thickness. The results of these experiments confirmed the model and showed that a dusting machine controller can accurately and automatically control the concentration of rock dust within narrow limits.<<ETX>>","PeriodicalId":110710,"journal":{"name":"Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121692655","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
Optimal control and appropriate pulse width modulation for a three-phase voltage DC-link PWM converter 三相电压直流电路PWM变换器的最优控制和适当脉宽调制
Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting Pub Date : 1992-10-04 DOI: 10.1109/IAS.1992.244432
R. Marschalko, M. Weinhold
{"title":"Optimal control and appropriate pulse width modulation for a three-phase voltage DC-link PWM converter","authors":"R. Marschalko, M. Weinhold","doi":"10.1109/IAS.1992.244432","DOIUrl":"https://doi.org/10.1109/IAS.1992.244432","url":null,"abstract":"Novel control strategies are presented which use all allowed switching operations of the three-phase voltage DC-link pulse width modulation (PWM) converter such that the converter has a line-friendly performance from the point of view of the utilities or the consumer. In the case of an ideal converter and a distortion-free supply network, the power factor becomes equal to unity under steady-state conditions and the dynamic characteristics of the control system are sufficient. In order to reach this line friendly performance with an existing converter and to keep the expenditure for the line-side filter low, appropriate PWM at a high switching frequency (>10 kHz) is necessary. The theory of the control strategies and appropriate PWM are presented. Practical results obtained with an insulated-gate bipolar transistor (IGBT) converter illustrate the dynamic and steady-state performance of the new control system in both energy-flow directions.<<ETX>>","PeriodicalId":110710,"journal":{"name":"Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124332392","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: 16
Offline 1774 PLC reliability case study 离线1774 PLC可靠性案例研究
Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting Pub Date : 1992-10-04 DOI: 10.1109/IAS.1992.244211
E.C. Ugokwe
{"title":"Offline 1774 PLC reliability case study","authors":"E.C. Ugokwe","doi":"10.1109/IAS.1992.244211","DOIUrl":"https://doi.org/10.1109/IAS.1992.244211","url":null,"abstract":"A reliability study was made of a 1774 PLC used in an ingot plant's offline area to monitor and control material handling from the hot mill scalpers as well as the finishing-to-ingot-scrap-chip system. The study was prompted by a series of rampant failures. The author discusses the factors that led to the problems as well as the decisions resulting from the data analysis. Also included are information and field data provided by the manufacturer.<<ETX>>","PeriodicalId":110710,"journal":{"name":"Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting","volume":"196 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124382742","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
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