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

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High voltage bipolar transistor with new concepts 具有新概念的高压双极晶体管
Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting Pub Date : 1992-10-04 DOI: 10.1109/IAS.1992.244420
I. Takata, T. Hikichi, M. Inoue
{"title":"High voltage bipolar transistor with new concepts","authors":"I. Takata, T. Hikichi, M. Inoue","doi":"10.1109/IAS.1992.244420","DOIUrl":"https://doi.org/10.1109/IAS.1992.244420","url":null,"abstract":"The 200 A class bipolar transistors developed for 440 V AC line use have two-stage Darlington construction to accomplish the low power loss, V/sub CE/(sat)=1.5 V, t/sub f/<or=1 mu s. The destruction current in the reverse bias safe operation area (SOA) is expanded to twice the conventional. This improvement is based on the theoretical prediction and the experimental confirmation that the operating limit voltage is determined by the collector layer thickness, and the operating limit current density is determined by the resistivity of the collector layer. The necessary condition for obtaining a wide short-circuit SOA is presented.<<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":"130338207","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: 4
Suppression of harmonic voltage distortion by neural network controlled active filter 神经网络控制有源滤波器抑制谐波电压畸变
Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting Pub Date : 1992-10-04 DOI: 10.1109/IAS.1992.244320
A. Kumamoto, T. Hikihara, Y. Hirane, K. Oku, O. Nakamura, S. Tada, K. Mizuki, Y. Ogihara
{"title":"Suppression of harmonic voltage distortion by neural network controlled active filter","authors":"A. Kumamoto, T. Hikihara, Y. Hirane, K. Oku, O. Nakamura, S. Tada, K. Mizuki, Y. Ogihara","doi":"10.1109/IAS.1992.244320","DOIUrl":"https://doi.org/10.1109/IAS.1992.244320","url":null,"abstract":"A newly developed control algorithm using a neural network theory for an active AC harmonic filter system to reduce the harmonic voltage distortion in an electrical power system is presented. The new control philosophy is dedicated to the reduction of the harmonic voltage distortion caused by many distributed harmonic generating loads. Harmonic disturbance problems, the neural network control algorithm of the active filter, and test results on a small-scale power system simulator are presented. The voltage distortion becomes lower than 1% because of the active filter operation, even under the condition that maximum voltage distortion exceed 7% without the active filter. The response time of the harmonic voltage compensation control is shown to be within two seconds.<<ETX>>","PeriodicalId":110710,"journal":{"name":"Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting","volume":"44 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113987420","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: 13
Design of stand-by generators for non-linear loads 非线性负载备用发电机的设计
Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting Pub Date : 1992-10-04 DOI: 10.1109/IAS.1992.244296
G. R. Phillips
{"title":"Design of stand-by generators for non-linear loads","authors":"G. R. Phillips","doi":"10.1109/IAS.1992.244296","DOIUrl":"https://doi.org/10.1109/IAS.1992.244296","url":null,"abstract":"The author discusses the causes of the problems and the design changes possible in the generator to minimize the voltage waveform distortion. A method for calculating the additional losses in the generator due to harmonic currents is presented. The discussion refers specifically to generators of the salient pole type in the 10-2000 kW range, but the general principles apply to all types of rotating field machines. Optimum generator design depends on the system connection. For generators connected directly to balanced line to neural loads, a 2/3 pitch machine with low zero sequence reactance minimizes triplen voltage harmonic distortion. For balanced three-phase loads, lower subtransient reactances and, consequently, lower voltage harmonic distortion can be obtained by using a longer coil pitch.<<ETX>>","PeriodicalId":110710,"journal":{"name":"Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting","volume":"5 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114036693","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
A single phase to three phase power converter for motor drive applications 用于电机驱动应用的单相到三相功率转换器
Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting Pub Date : 1992-10-04 DOI: 10.1109/IAS.1992.244335
C. Chen, D. Divan, D. Novotny
{"title":"A single phase to three phase power converter for motor drive applications","authors":"C. Chen, D. Divan, D. Novotny","doi":"10.1109/IAS.1992.244335","DOIUrl":"https://doi.org/10.1109/IAS.1992.244335","url":null,"abstract":"A simple and low-cost converter topology for driving a three-phase motor load from a single-phase AC power supply is presented. Using only two active devices with roughly one p.u. current rating, the converter can retain nearly full starting torque during motor starting with one extra capacitor and supply excellent balanced output voltage to the motor under steady-state conditions. Under positive sequence operation, the converter has no low-frequency output harmonic distortion, high total input power factor, and reasonable input current distortion. The fundamental frequency model for the system, harmonic distortion on the motor side and the input AC line side, the rating/stress for devices, reactive component selection, and the control strategies for starting and steady-state operation are detailed. Analytical, simulation, and experimental results are presented.<<ETX>>","PeriodicalId":110710,"journal":{"name":"Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting","volume":"18 1-12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114048109","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
High speed electrostatic surface discharge between a charged thin film and a sphere electrode with or without a thin dielectric film on that 带电薄膜和球面电极之间的高速静电表面放电，球面电极上有或没有薄介电膜
Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting Pub Date : 1992-10-04 DOI: 10.1109/IAS.1992.244246
T. Oda, Y. Sakai
{"title":"High speed electrostatic surface discharge between a charged thin film and a sphere electrode with or without a thin dielectric film on that","authors":"T. Oda, Y. Sakai","doi":"10.1109/IAS.1992.244246","DOIUrl":"https://doi.org/10.1109/IAS.1992.244246","url":null,"abstract":"The electrostatic surface discharge (ESD) between a charged thin dielectric film on a conductive flat plate electrode and a sphere electrode that is connected to the plate, and is either covered with an uncharged thin dielectric film or fare, was observed. Discharge current waveform, discharge gap length, current risetime, discharge photographs, current peak value, etc. were recorded. The initial charge generation by irradiation with beta-rays or ultraviolet light was not readily apparent, so that the reproducibility of ESD experiments was not much improved. The charging polarity dependence of such a surface ESD between two dielectric films becomes small with increasing film thickness. The discharge gap length of an ESD with an 12.5 mu m uncharged film on the electrode reduces to 50 or 70% of that between a charged film and a sphere metal electrode. Peak current and transferred charge value of such an ESD also decreases to roughly one-third of that between the film and the electrode.<<ETX>>","PeriodicalId":110710,"journal":{"name":"Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting","volume":"141 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":"115191844","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
Time domain analysis of distribution system harmonics. II. Interaction between harmonic sources and power system component 配电系统谐波的时域分析。2谐波源与电力系统部件之间的相互作用
Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting Pub Date : 1992-10-04 DOI: 10.1109/IAS.1992.244402
M. Ghezelayagh, V. Gosbell
{"title":"Time domain analysis of distribution system harmonics. II. Interaction between harmonic sources and power system component","authors":"M. Ghezelayagh, V. Gosbell","doi":"10.1109/IAS.1992.244402","DOIUrl":"https://doi.org/10.1109/IAS.1992.244402","url":null,"abstract":"For pt.I see ibid., p.1241-6 (1992). The interaction between harmonic sources, other loads and the power system is investigated, using a power electronic simulator which performs an accurate time-domain analysis as described and verified in part I. An investigation is made of various load compositions involving power converter, three-phase induction motor, and constant impedance loads. The power system conditions studied include strong, weak, and parallel resonance. These results are compared with those from a simple Thevenin model of the power system to establish the limit of the model's validity. An expression showing how the harmonic current injected into the power system is affected by load comparison is derived.<<ETX>>","PeriodicalId":110710,"journal":{"name":"Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting","volume":"55 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":"114113375","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
General criteria for the stochastic sum of measured harmonics at plant busses 工厂母线测量谐波随机和的一般准则
Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting Pub Date : 1992-10-04 DOI: 10.1109/IAS.1992.244261
G. Montanari, M. Cacciari, A. Cavallini, M. Loggini
{"title":"General criteria for the stochastic sum of measured harmonics at plant busses","authors":"G. Montanari, M. Cacciari, A. Cavallini, M. Loggini","doi":"10.1109/IAS.1992.244261","DOIUrl":"https://doi.org/10.1109/IAS.1992.244261","url":null,"abstract":"Criteria are presented for constructing the probability density and cumulative functions of the amplitudes and phases of the harmonic currents and voltages at plant buses when the harmonic vs. time behavior in the plant branches is detected by on field measurements. In particular, the convolution and Monte Carlo methods are applied and the relevant results compared on the basis of simulated and experimental samples. The methods do not reply on assumptions pertinent to any kind of probability function. The significance of providing harmonic quantities associated with the occurrence probability is considered. Examples of applications based on real plant measurements and comparisons of the procedures used are included.<<ETX>>","PeriodicalId":110710,"journal":{"name":"Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting","volume":"51 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":"114145393","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: 4
A pulsed corona-Townsend method for measurement of electron/ion number ratios and drift velocities 测量电子/离子数比和漂移速度的脉冲电晕-汤森德方法
Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting Pub Date : 1992-10-04 DOI: 10.1109/IAS.1992.244395
J. S. Clements, R.E. Williams
{"title":"A pulsed corona-Townsend method for measurement of electron/ion number ratios and drift velocities","authors":"J. S. Clements, R.E. Williams","doi":"10.1109/IAS.1992.244395","DOIUrl":"https://doi.org/10.1109/IAS.1992.244395","url":null,"abstract":"An easily implemented method based on the pulsed-corona-Townsend technique has been developed to measure drift velocities of charge carriers in a corona discharge at atmospheric pressure. The method also yields the electron/ion number ratio and an upper limit on the value of the electron attachment coefficient. Approximate electron drift velocities measured in nitrogen are in agreement with known values. In addition, the negative ion mobility obtained in nitrogen containing small amounts of oxygen agrees with known data. Therefore, the technique can be used to obtain data for gas mixture of practical interest. The method can also be used to distinguish the charge carriers in a corona discharge.<<ETX>>","PeriodicalId":110710,"journal":{"name":"Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting","volume":"38 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":"114786284","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
Fuzzy controller for inverter fed induction machines 变频感应电机模糊控制器
Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting Pub Date : 1992-10-04 DOI: 10.1109/IAS.1992.244359
S. Mir, D. Zinger, M. Elbuluk
{"title":"Fuzzy controller for inverter fed induction machines","authors":"S. Mir, D. Zinger, M. Elbuluk","doi":"10.1109/IAS.1992.244359","DOIUrl":"https://doi.org/10.1109/IAS.1992.244359","url":null,"abstract":"A fuzzy logic controller for direct self-control of an induction machine is presented. A response faster than that of the conventional direct self-controller during startup and during a step change in torque is achieved. To improve the system performance at low speeds a fuzzy resistance estimator is proposed to eliminate the error due to the change in stator resistance. At constant flux and torque commands any change in stator resistance of the induction machines causes an error in stator current. This error is utilized by the fuzzy resistance estimator to correct the stato resistance used by the controller to match the machine resistance. Both fuzzy controller and fuzzy resistance estimator are simulated for a 3 hp induction motor. The simulation results demonstrate good performance.<<ETX>>","PeriodicalId":110710,"journal":{"name":"Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting","volume":"109 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":"115171424","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: 176
Contrast potential, an assessment technique using large solid angle illuminance measurements 对比电位，一种使用大立体角照度测量的评估技术
Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting Pub Date : 1992-10-04 DOI: 10.1109/IAS.1992.244536
M. Siminovitch, M. Navvab, H. Kowalewski
{"title":"Contrast potential, an assessment technique using large solid angle illuminance measurements","authors":"M. Siminovitch, M. Navvab, H. Kowalewski","doi":"10.1109/IAS.1992.244536","DOIUrl":"https://doi.org/10.1109/IAS.1992.244536","url":null,"abstract":"The authors describe a technique for assessing the luminous contrast within lighting environments. This technique uses large solid angle measurements of both vertical and horizontal illuminance on the work plane, and is based on combining the horizontal and vertical illuminance measurements with a simple expression. This illuminance function was compared with the luminance contrast measurements obtained with a luminance contrast meter. Analysis of the experimental data indicates a strong correlation between the illuminance-based procedure and data obtained with the meter. The assessment of contrast based on large solid angle measurements of illuminance is also described.<<ETX>>","PeriodicalId":110710,"journal":{"name":"Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting","volume":"27 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":"115265204","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: 3
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