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Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting最新文献

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Analysis of corona from helical wires 螺旋线电晕分析
Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting Pub Date : 1988-10-02 DOI: 10.1109/IAS.1988.25283
M. Abdel-Salam, M. T. El-Mohandes, A. Turky, A. Yehia
{"title":"Analysis of corona from helical wires","authors":"M. Abdel-Salam, M. T. El-Mohandes, A. Turky, A. Yehia","doi":"10.1109/IAS.1988.25283","DOIUrl":"https://doi.org/10.1109/IAS.1988.25283","url":null,"abstract":"The DC corona current-voltage characteristics of coaxial cylindrical configurations with straight and helical wires are studied. Oscillograms describing the spatial development of streamers from helical and straight wires are recorded under fast, high-voltage pulses. These streamers proceed from the discharge wire (helical or straight) toward the outer cylinder. This is done to understand the role played by helical wires in improving the conversion efficiency of zone generators. A parametric study is carried out to investigate how the I-V characteristics and the streamer oscillograms are influenced by the pitch of the discharge wire as well as by the diameter of the outer cylinder. The results are discussed and correlated with the discharge physics.<<ETX>>","PeriodicalId":274766,"journal":{"name":"Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114868920","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
The graphical D-Q transformation of general power switching converters 一般功率开关变换器的D-Q变换图形
Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting Pub Date : 1988-10-02 DOI: 10.1109/IAS.1988.25173
C. Rim, D. Hu, G. Cho
{"title":"The graphical D-Q transformation of general power switching converters","authors":"C. Rim, D. Hu, G. Cho","doi":"10.1109/IAS.1988.25173","DOIUrl":"https://doi.org/10.1109/IAS.1988.25173","url":null,"abstract":"A novel circuit d-q transformation concept is introduced to analyze AC converters such as inverters, rectifiers and cycloconverters with ease. The equivalent linear time-invariant circuit is obtained by substituting switches with equivalent turn-ratio variable transformers and changing balanced AC reactors into equivalent DC reactors combined by gyrators. This circuit allows the utilization of power linear system analysis techniques such as Laplace transforms, which otherwise could not be applied to time-varying switching systems. The modeling procedure is shown for a controlled rectifier-inverter circuit. An analysis example is given for a buck-boost inverter, and the result is compared with that of the conventional approach. This approach is applicable to all AC converter families to determine the AC transfer function and the DC operating points. It is determined that the switching systems are equivalent to RLC filter circuits with transformers and gyrators.<<ETX>>","PeriodicalId":274766,"journal":{"name":"Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125034971","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: 15
Novel control strategy to improve the dynamic performance of a series resonant converter 改进串联谐振变换器动态性能的新型控制策略
Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting Pub Date : 1988-10-02 DOI: 10.1109/IAS.1988.25154
K. Al- Haddad, A. Bellahnid, V. Rajagopalan, Y. Chéron, H. Foch
{"title":"Novel control strategy to improve the dynamic performance of a series resonant converter","authors":"K. Al- Haddad, A. Bellahnid, V. Rajagopalan, Y. Chéron, H. Foch","doi":"10.1109/IAS.1988.25154","DOIUrl":"https://doi.org/10.1109/IAS.1988.25154","url":null,"abstract":"A novel control strategy is developed for the operation of a series resonant converter (SRC) with a view to improving its dynamic performance. The converter uses bipolar transistor devices whose base drive logic is such that the device has properties dual to those of a thyristor. The control strategy for the converter is based on maintaining a constant conduction angle for the transistors in a closed-loop mode of operation. The authors give details of the theoretical characteristics of a DC-to-DC converter using the SRC under a constant-transistor-conduction mode of operation. Results obtained from an experimental converter confirm the validity of the theoretical results and show improved dynamic performance of the converter during transients.<<ETX>>","PeriodicalId":274766,"journal":{"name":"Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121741862","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
An improved algorithm for fast discrete time domain modelling of power electronic circuits 电力电子电路离散时域快速建模的改进算法
Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting Pub Date : 1988-10-02 DOI: 10.1109/IAS.1988.25187
J.A. Kojori, J. Lavers
{"title":"An improved algorithm for fast discrete time domain modelling of power electronic circuits","authors":"J.A. Kojori, J. Lavers","doi":"10.1109/IAS.1988.25187","DOIUrl":"https://doi.org/10.1109/IAS.1988.25187","url":null,"abstract":"An exact solution of the state differential equations for a power electronic circuit, incorporating a time discretization and a basis transformation, is presented. An eigenvalue-eigenvector expansion of the system matrix allows the efficient evaluation of the state transition matrix and particular integral. A binary search algorithm that does not require the recalculation of the exponential matrix can be used to obtain the state switching times. The basis transformation results in an exact solution when the input forcing function has an arbitrary time variation. Examples that illustrate the features of the method are presented.<<ETX>>","PeriodicalId":274766,"journal":{"name":"Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123906672","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
Application of solid modeling to three-dimensional electrostatic field computation 实体建模在三维静电场计算中的应用
Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting Pub Date : 1988-10-02 DOI: 10.1109/IAS.1988.25288
E. Smetak, D. Shenton, Z. Cendes
{"title":"Application of solid modeling to three-dimensional electrostatic field computation","authors":"E. Smetak, D. Shenton, Z. Cendes","doi":"10.1109/IAS.1988.25288","DOIUrl":"https://doi.org/10.1109/IAS.1988.25288","url":null,"abstract":"A computer program for three-dimensional electrostatics analysis is presented that uses solid modeling principles to specify and construct problem geometries, and Delaunay tessellation to generate meshes. With the solid modeling approach, simple solid primitives are constructed by sweeping or revolving two-dimensional cross sections entered into the computer using a graphic sketch-pad and mouse. The solid primitives are then manipulated using the Boolean operations of union, intersection, and subtraction to produce complex solids. Once the problem geometry is entered, Delaunay tesselation is used to generate automatically a tetrahedral mesh that is ideal for finite-element analysis. The combination of solid modeling with Delaunay tesselation provides an extremely powerful and convenient user interface for finite-element analysis of electrostatic fields in three dimensions.<<ETX>>","PeriodicalId":274766,"journal":{"name":"Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123965928","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
QENS-an enhanced version of the electric network simulator program qens -一个增强版的电子网络模拟器程序
Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting Pub Date : 1988-10-02 DOI: 10.1109/IAS.1988.25190
H. Cornel, V. I. John
{"title":"QENS-an enhanced version of the electric network simulator program","authors":"H. Cornel, V. I. John","doi":"10.1109/IAS.1988.25190","DOIUrl":"https://doi.org/10.1109/IAS.1988.25190","url":null,"abstract":"A commercially available AC/DC load flow program geared specifically to transit systems has been enhanced to simulate the Vancouver ALRT (Advanced Light Rapid Transit) system. The converter model has been revised to accurately simulate a twelve-pulse parallel-connected converter station with inversion capability. A model and algorithm to simulate the operation of wayside braking resistors called automatic assured receptivity units (AARUs), is developed. The revised program, QENS, retains the separate AC and DC networks and uses a sequential method to obtain convergence of both networks while simultaneously satisfying the converter voltage and power constraints. Several simulation case studies are examined that are based on typical Vancouver operating scenarios. Performance comparisons between six and twelve-pulse converters are made, and the effects of regenerative braking into a nonreceptive power system are investigated. The Gauss-Seidel method used in the algorithm provides QENS with good convergence characteristics and consistently yields accurate solutions in a reasonable amount of CPU time.<<ETX>>","PeriodicalId":274766,"journal":{"name":"Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting","volume":"540 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124267161","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
Analysis and design of a half-bridge parallel resonant converter operating above resonance 谐振以上半桥并联变换器的分析与设计
Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting Pub Date : 1988-10-02 DOI: 10.1109/IAS.1988.25157
Y. Kang, A. Upadhyay, D. Stephens
{"title":"Analysis and design of a half-bridge parallel resonant converter operating above resonance","authors":"Y. Kang, A. Upadhyay, D. Stephens","doi":"10.1109/IAS.1988.25157","DOIUrl":"https://doi.org/10.1109/IAS.1988.25157","url":null,"abstract":"A half-bridge parallel resonant converter (PRC) operating above resonance is analyzed in detail to provide a more straightforward and easy-to-use design tool. Closed-form solutions for the PRC are derived under steady-state conditions. Resonant component selection criteria is provided. Various design parameters derived from the results of the analysis are presented in the form of normalized design graphs to directly determine the component ratings. Using these design graphs, a step-by-step design procedure for a 100 kHz, 150 W multioutput switching power supply is given and implemented for verification of theoretical results.<<ETX>>","PeriodicalId":274766,"journal":{"name":"Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128877872","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: 54
Design of a resonant inverter with variable voltage and constant frequency 变压恒频谐振逆变器的设计
Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting Pub Date : 1988-10-02 DOI: 10.1109/IAS.1988.25182
R. Bonert
{"title":"Design of a resonant inverter with variable voltage and constant frequency","authors":"R. Bonert","doi":"10.1109/IAS.1988.25182","DOIUrl":"https://doi.org/10.1109/IAS.1988.25182","url":null,"abstract":"A series inverter circuit is proposed that provides constant output frequency and a wide range of output voltage control. This circuit overcomes one of the major disadvantages of series inverters normally providing only a small range of voltage control at varying frequency. The circuit is a combination of two basic inverter circuits. The voltage control is achieved by phase-shifting the output voltages of the basic inverters. The authors provide a circuit analysis and a model to study the unsymmetrical operation of the two basic inverters in the combined circuit. Based on the analysis, the inverter performance is evaluated and design rules are established to achieve good regulation of the output voltage, low harmonic distortion and optimal inverter rating. The theoretical results are verified experimentally.<<ETX>>","PeriodicalId":274766,"journal":{"name":"Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122430158","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
Permanent magnet motors for brushless operation 永磁电机无刷操作
Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting Pub Date : 1988-10-02 DOI: 10.1109/IAS.1988.25035
M. Jabbar, T. Low, M. Rahman
{"title":"Permanent magnet motors for brushless operation","authors":"M. Jabbar, T. Low, M. Rahman","doi":"10.1109/IAS.1988.25035","DOIUrl":"https://doi.org/10.1109/IAS.1988.25035","url":null,"abstract":"The design considerations for permanent-magnet motors intended for brushless operation are discussed. Two rotor configurations are described: the imbricated rotor and the segmented rotor. The segmented rotor is designed specially for high-speed operation. A brushless DC drive system is also described, and the performance of a neodymium-iron-boron excited permanent-magnet motor with an imbricated rotor in a brushless DC drive is presented.<<ETX>>","PeriodicalId":274766,"journal":{"name":"Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting","volume":"318 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120882377","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: 53
Some notes on the necessity to extend the vibro-acoustical tests of rotating electrical machines used in variable-speed drives 关于扩展用于变速传动的旋转电机振动声学试验的必要性的一些说明
Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting Pub Date : 1988-10-02 DOI: 10.1109/IAS.1988.25051
P. Timár, K. Hallenius
{"title":"Some notes on the necessity to extend the vibro-acoustical tests of rotating electrical machines used in variable-speed drives","authors":"P. Timár, K. Hallenius","doi":"10.1109/IAS.1988.25051","DOIUrl":"https://doi.org/10.1109/IAS.1988.25051","url":null,"abstract":"An analysis is made of the vibration and noise generation when an induction motor is fed by a frequency converter and works in a variable-speed drive, how the time harmonics in the supply voltage affect the excitation system, and how the variation of the exciting force frequency develops mechanical resonance. The vibro-acoustic problems of variable-speed drives are discussed from two perspectives. The consequences of supplying the machine with a voltage rich in time harmonics from an inverter are examined. Also discussed are the vibro-acoustic problems caused by the quasistationary speed variation within a wide range. A suggestion is made as to how the vibro-acoustical test requirements should be charged.<<ETX>>","PeriodicalId":274766,"journal":{"name":"Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121311751","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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