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Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting最新文献

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Flow visualization of a particle deposition on silicon wafers in clean rooms 洁净室中硅晶圆上颗粒沉积的流动可视化
Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting Pub Date : 1991-09-28 DOI: 10.1109/IAS.1991.178239
S. Kanazawa, T. Ohkubo, T. Adachi, M. Inokuchi, A. Shibuya
{"title":"Flow visualization of a particle deposition on silicon wafers in clean rooms","authors":"S. Kanazawa, T. Ohkubo, T. Adachi, M. Inokuchi, A. Shibuya","doi":"10.1109/IAS.1991.178239","DOIUrl":"https://doi.org/10.1109/IAS.1991.178239","url":null,"abstract":"Flow field around silicon wafer in a clean room is discussed on the basis of experimental results obtained using smoke visualization and the Schlieren method. Several examples of flow pattern are presented to show the influence of aerodynamic conditions on particle transportation. The characteristic flow phenomena around stagnation point flow and vortices generated behind the wafer are made clear from the observed streamlines by the Schlieren method. The observed flow field for the vertical airflow over a horizontal wafer is compared with the simulation result given in Liu et al. (1987). The dependence of airflow on wafer surface temperature is also discussed. Results show that the fluid flow for a normal condition is an axisymmetric flow, while, for a wafer heated condition, the behavior of fluid flow is changed extremely and the effect of thermal convection is dominant compared with the main downward air flow.<<ETX>>","PeriodicalId":294244,"journal":{"name":"Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128713508","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
A comprehensive design procedure for low torque-ripple variable-reluctance motor drives 低转矩脉动变磁阻电机驱动器的综合设计程序
Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting Pub Date : 1991-09-28 DOI: 10.1109/IAS.1991.178162
D.P. Tormey, D. Torrey
{"title":"A comprehensive design procedure for low torque-ripple variable-reluctance motor drives","authors":"D.P. Tormey, D. Torrey","doi":"10.1109/IAS.1991.178162","DOIUrl":"https://doi.org/10.1109/IAS.1991.178162","url":null,"abstract":"A procedure for designing variable-reluctance motor (VRM) drives for low torque-ripple applications. The procedure is comprehensive because it begins with the fundamental selection of pole numbers and geometry, and proceeds to final design. It provides a complete, clear and concise path to a successful design for a low torque-ripple drive. There are two important contributions of the work presented. First, the design procedure explicates the issues involved in designing VRMs for torque-ripple sensitive applications. Second, results of the motor design are amenable to simple control methods which offer acceptable performance in many applications. In the procedure outlined the VRM geometry, inverter voltages are tailored to minimize torque ripple.<<ETX>>","PeriodicalId":294244,"journal":{"name":"Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132420560","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: 20
Learning design rules and concepts for examples-a case study to design an electric power substation design 以学习设计规则和概念为例——以变电站设计为例
Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting Pub Date : 1991-09-28 DOI: 10.1109/IAS.1991.178016
Y.B. Mahdy, E. Stanek, M. Abdel-Salam, M. Zaki
{"title":"Learning design rules and concepts for examples-a case study to design an electric power substation design","authors":"Y.B. Mahdy, E. Stanek, M. Abdel-Salam, M. Zaki","doi":"10.1109/IAS.1991.178016","DOIUrl":"https://doi.org/10.1109/IAS.1991.178016","url":null,"abstract":"Some principles of machine learning and some links with knowledge base system are described. A domain-independent inductive learning system (ILS) has been developed and implemented. ILS can be attached to any expert system, and will work as a knowledge acquisition module for the expert system. This gives the expert system the ability to update and expand its knowledge base according to the circumstances. ILS is a logic-based, data-driven learning system, focusing on the problem of learning structural descriptions. ILS is tailored to design electrical system components. In the present work, ILS is used for specifying the major components of an electrical substation. The learning system will learn design rules and concepts from positive and negative examples in the form of existing substations. This system will take examples and generate rules and concepts for specifying the major components of an electric substation.<<ETX>>","PeriodicalId":294244,"journal":{"name":"Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132328680","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
Suppression of emissions from large electrolytic tanks by means of fine, charged water droplets (phase I) 利用带电细水滴抑制大型电解槽排放(第一阶段)
Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting Pub Date : 1991-09-28 DOI: 10.1109/IAS.1991.178323
I. Inculet, J.F. Eggleston, G. Castle, K. Bech
{"title":"Suppression of emissions from large electrolytic tanks by means of fine, charged water droplets (phase I)","authors":"I. Inculet, J.F. Eggleston, G. Castle, K. Bech","doi":"10.1109/IAS.1991.178323","DOIUrl":"https://doi.org/10.1109/IAS.1991.178323","url":null,"abstract":"The authors present theoretical considerations and laboratory experimental results of an electrostatic system designed to suppress tank emissions at their source, i.e. at the surface of the tanks. It is found that tank emissions in the form of a mist are substantially reduced by being repelled back into the tank. The reductions measured in terms of copper, nickel, cobalt, iron, sulphuric acid, and arsenic were all on the order of 50%, except for the iron and sulphuric acid data which show approximately a 20% reduction for the sulphuric acid, 60% for the iron when spraying charged water.<<ETX>>","PeriodicalId":294244,"journal":{"name":"Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130900880","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
The application of a thermal bridge to increase light output of a T12 fluorescent fixture system 热桥增加T12荧光灯具系统光输出的应用
Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting Pub Date : 1991-09-28 DOI: 10.1109/IAS.1991.178121
M. Packer, M. Siminovitch
{"title":"The application of a thermal bridge to increase light output of a T12 fluorescent fixture system","authors":"M. Packer, M. Siminovitch","doi":"10.1109/IAS.1991.178121","DOIUrl":"https://doi.org/10.1109/IAS.1991.178121","url":null,"abstract":"Fluorescent lamps can lose 10-20% in light output and 5-10% in efficacy enclosed and thermally constricted multilamp fixtures. The authors present two thermal bridge concepts that increase the performance of a T12 lamp/fixture under typical operating conditions. The first bridge utilizes the conformable and convective properties of a liquid heat sink. The second bridge utilizes the semiridged and conductive properties of aluminum and copper. The results indicate that a potential 10-20% increase in light output can be maintained by applying a thermal bridge system to cool a small section of the lamp's surface. This corresponds to a recovery of 300-600 lumens per lamp. Additional advantages of using the thermal bridge systems are small size, minimal optical losses, no dust factor that is associated with vented fixture designs, and potentially low integration cost.<<ETX>>","PeriodicalId":294244,"journal":{"name":"Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131316886","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
A novel three-phase quasi-resonant DC link inverter 一种新型三相准谐振直流环节逆变器
Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting Pub Date : 1991-09-28 DOI: 10.1109/IAS.1991.178331
J.-W. Lee, S. Sul, M. Park
{"title":"A novel three-phase quasi-resonant DC link inverter","authors":"J.-W. Lee, S. Sul, M. Park","doi":"10.1109/IAS.1991.178331","DOIUrl":"https://doi.org/10.1109/IAS.1991.178331","url":null,"abstract":"A three-phase quasi-resonant DC link inverter (QRI), which adopts the resonant circuit with one additional switch, is proposed. The circuit states for given switching and load current states in the inverter are analyzed, and then an equivalent circuit seen from the inverter input side is derived. By using this equivalent circuit the QRI is analyzed, and two control techniques, which are the initial current control technique of resonant inductor and the initial voltage control technique of resonant capacitor, are presented in order to obtain the desirable oscillation of resonant link irrespective of inverter operation. The operating characteristics of QRI are verified through both simulations and experiments.<<ETX>>","PeriodicalId":294244,"journal":{"name":"Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128769259","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: 8
Nondestructive RBSOA characterization of IGBTs and MCTs igbt和mct的非破坏性RBSOA特性
Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting Pub Date : 1991-09-28 DOI: 10.1109/IAS.1991.178066
D. Chen, F. Lee, G. Carpenter
{"title":"Nondestructive RBSOA characterization of IGBTs and MCTs","authors":"D. Chen, F. Lee, G. Carpenter","doi":"10.1109/IAS.1991.178066","DOIUrl":"https://doi.org/10.1109/IAS.1991.178066","url":null,"abstract":"Nondestructive evaluations of IGBTs (insulated-gate bipolar transistors) and MCTs (MOS-controller thyristors) are discussed and their corresponding RBSOAs established. Test results are presented for a variety of commercial devices at different temperatures. It was observed that, compared to BJTs (bipolar junction transistors), IGBTs and MCTs exhibit very different turn-off breakdown characteristics. Avalanche breakdown of the parasitic transistor accounts for the loss of dynamic voltage blocking capability of both IGBTs and MCTs.<<ETX>>","PeriodicalId":294244,"journal":{"name":"Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126794386","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: 24
Active input current waveshaping method for three-phase diode rectifiers with zero switching losses 零开关损耗三相二极管整流器的有源输入电流整形方法
Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting Pub Date : 1991-09-28 DOI: 10.1109/IAS.1991.178349
A. Prasad, P. Ziogas
{"title":"Active input current waveshaping method for three-phase diode rectifiers with zero switching losses","authors":"A. Prasad, P. Ziogas","doi":"10.1109/IAS.1991.178349","DOIUrl":"https://doi.org/10.1109/IAS.1991.178349","url":null,"abstract":"A zero voltage switched active network which can be used in conjunction with single-phase or three-phase AC to DC diode rectifiers is presented. It is shown that application of the proposed switching network in a three-phase AC to DC boost converter yields zero switching losses while maintaining a unity input power factor. Active network capacitor, C/sub s/, diodes D/sub 7/ and D/sub 8/ maintain a zero voltage during turn-off of Q/sub 1/ and Q/sub 2/. Capacitor discharges through the boost inductors of the circuit, thus limiting the rate of rise of current during turn-on. Moreover, the advantage of the proposed active network is that it can maintain a zero voltage switching over the entire range of the duty cycle of the operation. Consequently, boost stage can be used directly to control the DC bus voltage by varying the duty cycle at constant switching frequency.<<ETX>>","PeriodicalId":294244,"journal":{"name":"Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126251488","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: 6
Simplified circuit modeling of ESD waveforms ESD波形的简化电路建模
Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting Pub Date : 1991-09-28 DOI: 10.1109/IAS.1991.178232
Y. Chang, M. Rudko, C. Wu
{"title":"Simplified circuit modeling of ESD waveforms","authors":"Y. Chang, M. Rudko, C. Wu","doi":"10.1109/IAS.1991.178232","DOIUrl":"https://doi.org/10.1109/IAS.1991.178232","url":null,"abstract":"A simple method is presented to find a circuit model for a given ESD (electrostatic discharge) waveform. The proposed technique is considerably simpler than previously described methods. A measured ESD current waveform is expressed as a linear combination of a set of basis functions. Each basis function is modeled by a first-order or a second-order RLC circuit. Many ESD waveforms can be adequately modeled with three or less basis functions.<<ETX>>","PeriodicalId":294244,"journal":{"name":"Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121304067","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
Permanent magnets synchronous motors: a general approach for cogging torque suppression 永磁同步电动机:齿槽转矩抑制的一般方法
Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting Pub Date : 1991-09-28 DOI: 10.1109/IAS.1991.178156
E. Favre, L. Cardoletti, M. Jufer
{"title":"Permanent magnets synchronous motors: a general approach for cogging torque suppression","authors":"E. Favre, L. Cardoletti, M. Jufer","doi":"10.1109/IAS.1991.178156","DOIUrl":"https://doi.org/10.1109/IAS.1991.178156","url":null,"abstract":"The minimization of the torque ripple in permanent magnets synchronous motors is achieved either by a special motor design or by an adequate control of the driver. In both cases, the driver or the motor choice is made so that both elements are complementary. The presented approach yields either appropriate current shapes to drive a given motor without torque ripple or appropriate back EMF shapes for a given current or voltage supply. The torque components due to the interaction between the magnets and the stator slots are taken into account.<<ETX>>","PeriodicalId":294244,"journal":{"name":"Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115251946","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: 7
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