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

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Adjusting circuit parasitics to optimize converter switching transient behaviour 调整电路寄生以优化变换器开关瞬态行为
Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting Pub Date : 1992-10-04 DOI: 10.1109/IAS.1992.244427
W. Cronje, J. V. van Wyk, J. Ferreira
{"title":"Adjusting circuit parasitics to optimize converter switching transient behaviour","authors":"W. Cronje, J. V. van Wyk, J. Ferreira","doi":"10.1109/IAS.1992.244427","DOIUrl":"https://doi.org/10.1109/IAS.1992.244427","url":null,"abstract":"It is shown that the influence of parasitic energy storage in a physical converter circuit on converter operation can be modeled with equivalent lumped element circuits that allow SPICE simulations of complete converter circuits by inclusion of the equivalent circuits. The proposed techniques are demonstrated by an example, and the simulated results are verified experimentally. It is shown that the use of high-permittivity ceramic dielectric materials can significantly change the electromagnetic behavior of connecting structures. The concepts can be applied to practical structures and used to improve the converter behavior-for instance, by using the parasitic capacitance for snubbing. This obviates the need for discrete snubber components, leading to circuits with reduced component count, volume, and mass. The main advantage of the method is the significantly reduced switch stresses due to reduced overshoot and oscillation amplitudes. As a result, the switching device ratings can be reduced while maintaining circuit reliability.<<ETX>>","PeriodicalId":110710,"journal":{"name":"Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting","volume":"13 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":"121247371","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
Control system to improve tin plate primary yield 控制系统提高锡板初产率
Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting Pub Date : 1992-10-04 DOI: 10.1109/IAS.1992.244205
R. Clyde, D. T. Green
{"title":"Control system to improve tin plate primary yield","authors":"R. Clyde, D. T. Green","doi":"10.1109/IAS.1992.244205","DOIUrl":"https://doi.org/10.1109/IAS.1992.244205","url":null,"abstract":"The authors detail modifications made in the control scheme for two separate tin lines which increased yield by improving quality for a relatively small investment. They deal with control modifications made to the helper sections (drives for turning, deflector rolls, conductor rolls, sink rolls, etc.) to reduce scratches and increase prime tin plate yield while keeping cost to a minimum. In general, these drives are used to help overcome the friction losses of the particular rolls they drive. The electrical configuration of the helper sections in each of these two tin lines, did not permit proper operation of the helper rolls. The new configurations are described.<<ETX>>","PeriodicalId":110710,"journal":{"name":"Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting","volume":"274 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":"115971703","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
A systematic approach to selecting optimal flux references in induction motors 感应电机最佳磁链参考选择的系统方法
Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting Pub Date : 1992-10-04 DOI: 10.1109/IAS.1992.244350
M. Bodson, J. Chiasson
{"title":"A systematic approach to selecting optimal flux references in induction motors","authors":"M. Bodson, J. Chiasson","doi":"10.1109/IAS.1992.244350","DOIUrl":"https://doi.org/10.1109/IAS.1992.244350","url":null,"abstract":"The problem of optimal selection of the flux reference in induction machines is addressed. The results are based on a standard differential equation model of the induction machine and give the value of the flux reference which maximizes the torque at constant speed given a bounded source voltage (optimal field weakening). Both the motor and the generator modes are considered. The formulae are useful for the real-time programming of digital controllers designed to achieve maximum performance of AC drives at high speeds. The optimal choice of flux reference is also calculated for the purpose of energy minimization and compared with torque maximization. The results are illustrated with numerical computations and simulations.<<ETX>>","PeriodicalId":110710,"journal":{"name":"Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting","volume":"86 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":"117077173","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
Rotor position estimation scheme of a permanent magnet synchronous machine for high performance variable speed drive 高性能变速驱动永磁同步电机转子位置估计方案
Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting Pub Date : 1992-10-04 DOI: 10.1109/IAS.1992.244466
M. Naidu, B. Bose
{"title":"Rotor position estimation scheme of a permanent magnet synchronous machine for high performance variable speed drive","authors":"M. Naidu, B. Bose","doi":"10.1109/IAS.1992.244466","DOIUrl":"https://doi.org/10.1109/IAS.1992.244466","url":null,"abstract":"A novel method of estimating the rotor position and speed of a permanent magnet (PM) synchronous motor using a high-speed digital signal processor by measuring stator quantities is described. The basic idea of this method stems from exploiting the saliency characteristics of a PM synchronous machine. A complete vector control drive of a PM synchronous machine with position estimator has been simulated using the PC-based SIMNON program. The simulation results show that the performance of the machine with position estimator is in close agreement with that of a position sensor. Since the estimation algorithm needs few instructions, such as multiplications and additions and subtractions, it is well suited for real-time application using a high-speed digital signal processor.<<ETX>>","PeriodicalId":110710,"journal":{"name":"Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting","volume":"106 3 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":"116639057","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: 67
The general relationship between regular-sampled pulse-width-modulation and space vector modulation for hard switched converters 硬开关变换器的正则采样脉宽调制与空间矢量调制的一般关系
Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting Pub Date : 1992-10-04 DOI: 10.1109/IAS.1992.244437
Donald Grahame Holmes
{"title":"The general relationship between regular-sampled pulse-width-modulation and space vector modulation for hard switched converters","authors":"Donald Grahame Holmes","doi":"10.1109/IAS.1992.244437","DOIUrl":"https://doi.org/10.1109/IAS.1992.244437","url":null,"abstract":"Regular sampled pulse width modulation and space vector modulation are often presented as two alternative ways to modulate a hard switched converter system. In the present work, a mathematical relationship between these two types of modulating strategies is established, using reduced forms of general AC-AC matrix converter modulation theory. The resultant modulation strategy is shown to be identical to previously reported space vector solutions, which are known to achieve minimum harmonics for both voltage source and current source inverters. This relationship is then extended to be applied to an AC-AC matrix converter, to create a simple space vector modulation algorithm for a matrix converter which can be easily implemented for real-time computation in an online control system.<<ETX>>","PeriodicalId":110710,"journal":{"name":"Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting","volume":"48 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":"115560313","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: 100
A 100 kVA resonant DC link inverter with GTOs-design considerations and first practical experience 100千伏安谐振直流链路逆变器与gtos设计的考虑和第一次实践经验
Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting Pub Date : 1992-10-04 DOI: 10.1109/IAS.1992.244324
L. Schulting
{"title":"A 100 kVA resonant DC link inverter with GTOs-design considerations and first practical experience","authors":"L. Schulting","doi":"10.1109/IAS.1992.244324","DOIUrl":"https://doi.org/10.1109/IAS.1992.244324","url":null,"abstract":"A three-phase resonant DC link inverter (RDCLI) with a passive voltage clamp is investigated. The inverter is fed by a rectified three-phase line voltage, and the power rating is 100 kVA. Gate turn-off thyristors (GTOs) are used because of the high blocking voltage and load currents. Some restrictions of GTOs operating at high switching frequencies are discussed. Results of calculations and measurements of the GTO switching losses in the zero voltage switching mode are presented. Equations for the calculations of the values of the passive elements are derived. The principle of the current controller and first practical experiences with the RDCLI are presented.<<ETX>>","PeriodicalId":110710,"journal":{"name":"Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting","volume":"15 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":"115593798","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
Application of linear motor on artificial satellite fuel pump system 直线电机在人造卫星燃油泵系统中的应用
Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting Pub Date : 1992-10-04 DOI: 10.1109/IAS.1992.244450
J. Oyama, T. Higuchi, H. Akashi, E. Yamada, N. Nagatomo, I. Yoshinaga
{"title":"Application of linear motor on artificial satellite fuel pump system","authors":"J. Oyama, T. Higuchi, H. Akashi, E. Yamada, N. Nagatomo, I. Yoshinaga","doi":"10.1109/IAS.1992.244450","DOIUrl":"https://doi.org/10.1109/IAS.1992.244450","url":null,"abstract":"The authors propose a new type of fuel pump system with linear motor propulsion, in which two pumps are equipped on both sides of the linear motor and a resonant system with springs is organized to decrease the rated thrust. A pump where the discharge pressure is 21.0 kgf/cm/sup 2/ and the discharge flow rate is 21.25 cm/sup 3//s is assumed. A prototype linear pulse motor was designed, built, and tested. The thrust characteristics are estimated using an equivalent magnetic circuit, and it is confirmed that the calculated results agree well with the experimental results.<<ETX>>","PeriodicalId":110710,"journal":{"name":"Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting","volume":"243 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":"114289712","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
Spacecraft lighting systems 航天器照明系统
Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting Pub Date : 1992-10-04 DOI: 10.1109/IAS.1992.244541
C. Wheelwright, J. R. Toole
{"title":"Spacecraft lighting systems","authors":"C. Wheelwright, J. R. Toole","doi":"10.1109/IAS.1992.244541","DOIUrl":"https://doi.org/10.1109/IAS.1992.244541","url":null,"abstract":"A general description of the internal and external lighting systems is presented. The most appropriate light source for illumination of the interior of spacecraft is the fluorescent lamp. The primary approach and design criteria followed in the development and implementation of a luminaire are discussed, and an overview of the primary systems is given. In particular, the general illumination within the working and living areas should provide a medium level intensity of white light and utilize supplemental task lighting where functionally required. The luminaire should cover the entire work area with a uniform diffuse intensity. On most spacecraft, a variety of lighting systems are utilized to provide artificial illumination of the exterior visual scene during night side operations. These luminaires provide lighting for the following: extravehicular activity, acquisition tracking, rendezvous, berthing and docking operations.<<ETX>>","PeriodicalId":110710,"journal":{"name":"Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting","volume":"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":"114343019","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
Accessible-states-based sliding mode control of a variable speed drive system 基于可达状态的变速驱动系统滑模控制
Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting Pub Date : 1992-10-04 DOI: 10.1109/IAS.1992.244525
P. Nandam, P. Sen
{"title":"Accessible-states-based sliding mode control of a variable speed drive system","authors":"P. Nandam, P. Sen","doi":"10.1109/IAS.1992.244525","DOIUrl":"https://doi.org/10.1109/IAS.1992.244525","url":null,"abstract":"The authors present a suitable control law and a novel method for the implementation of sliding mode speed control (SLMSC) of a variables speed drive system. The analysis and results presented demonstrate that considerable simplification of design and circuit complexity can be achieved for SLMSC by employing the system states which are accessible or measurable. Both experimental and simulation results are presented to illustrate the potential of the method.<<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":"114909478","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: 12
A novel laser triangulation technique for high precision distance measurement 高精度距离测量的新型激光三角测量技术
Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting Pub Date : 1992-10-04 DOI: 10.1109/IAS.1992.244524
D. S. Pierce, T. Ng, B. R. Morrison
{"title":"A novel laser triangulation technique for high precision distance measurement","authors":"D. S. Pierce, T. Ng, B. R. Morrison","doi":"10.1109/IAS.1992.244524","DOIUrl":"https://doi.org/10.1109/IAS.1992.244524","url":null,"abstract":"The authors describe an optical triangulation technique for noncontact distance measurement which yields high accuracy with a large depth of field and stand-off from the target. The theoretical error of this gauging technique is 0.5 mu m over a depth of field of 2 mm at distance of 100 mm from an optically rough target. The only limitation placed on the target surface is that it must diffuse a small amount of light. The gauge is also robust in the presence of vibration. An experimental gauge has been constructed using commercially available optical components, and its performance is described.<<ETX>>","PeriodicalId":110710,"journal":{"name":"Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting","volume":"77 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":"127418285","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: 17
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