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Time reversal duality and the synthesis of a double class E DC-DC converter 时间反转对偶性及双E级DC-DC变换器的合成
21st Annual IEEE Conference on Power Electronics Specialists Pub Date : 1990-06-11 DOI: 10.1109/PESC.1990.131231
D. C. Hamill
{"title":"Time reversal duality and the synthesis of a double class E DC-DC converter","authors":"D. C. Hamill","doi":"10.1109/PESC.1990.131231","DOIUrl":"https://doi.org/10.1109/PESC.1990.131231","url":null,"abstract":"The principle of time reversal duality is introduced and applied to DC-DC power converters. Elementary inverters and rectifiers are time reversal duals of each other. When coupled together by a reactive matching network, a DC-DC converter whose properties are determined largely by the matching network is formed. This approach has application in the analysis and syntheses of PWM (pulse width modulation), resonant, quasi-resonant, and multiresonant converters. It is used here to synthesize a Cuk converter, and a double class E DC-DC power converter in which the switch and diode both operate in class E. The converter is ideally lossless for any DC load including open and short circuits.<<ETX>>","PeriodicalId":330807,"journal":{"name":"21st Annual IEEE Conference on Power Electronics Specialists","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126148267","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: 60
DC analysis and design of forward multi-resonant converter 正激多谐振变换器的直流分析与设计
21st Annual IEEE Conference on Power Electronics Specialists Pub Date : 1990-06-11 DOI: 10.1109/PESC.1990.131279
W. Tang, W. Tabisz, A. Lotfi, F. Lee, V. Vorpérian
{"title":"DC analysis and design of forward multi-resonant converter","authors":"W. Tang, W. Tabisz, A. Lotfi, F. Lee, V. Vorpérian","doi":"10.1109/PESC.1990.131279","DOIUrl":"https://doi.org/10.1109/PESC.1990.131279","url":null,"abstract":"A DC analysis of the forward zero-voltage-switching multiresonant converter is presented. The voltage conversion ratio characteristics and semiconductor device voltage and current stresses are characterized. The results of the analysis are verified by experiments and SPICE simulation. It is found that to minimize the current and voltage stresses, the characteristic impedance must be maximized and the ratio of the primary to secondary resonant capacitances must be minimized. Based on the analysis, a procedure for designing the resonant tank with minimum current and voltage stresses is established.<<ETX>>","PeriodicalId":330807,"journal":{"name":"21st Annual IEEE Conference on Power Electronics Specialists","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114515584","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: 34
Transient thermal analysis of thyristors using finite element method 晶闸管瞬态热分析的有限元方法
21st Annual IEEE Conference on Power Electronics Specialists Pub Date : 1990-06-11 DOI: 10.1109/PESC.1990.131218
V. A. Sankaran, J. Hudgins, C. Rhodes, W. Portnoy
{"title":"Transient thermal analysis of thyristors using finite element method","authors":"V. A. Sankaran, J. Hudgins, C. Rhodes, W. Portnoy","doi":"10.1109/PESC.1990.131218","DOIUrl":"https://doi.org/10.1109/PESC.1990.131218","url":null,"abstract":"The finite element method (FEM) was used to obtain spatial and temporal distribution of temperatures in high-power SCRs (silicon-controlled rectifiers) used for switching high di/dt current pulses. The meshing strategy heat source model and boundary conditions used for the analysis are presented. The failure temperature of the device was computed to be 1100 degrees C from the analysis. Additionally, the results indicate that thermal failure does not occur at the peak power, as has been suggested, but at a time greater than 10 mu s after the anode current begins to flow, in agreement with experimentally observed time to failure. The instantaneous cooling cycle of the device and, therefore, the cooling and time constant of the device obtained from the simulations are also presented. From the parameters, the operating frequency of the device can be predicted. The results and analysis illustrate the potential of FEM for performing thermal analysis on solid-state devices under various operating conditions.<<ETX>>","PeriodicalId":330807,"journal":{"name":"21st Annual IEEE Conference on Power Electronics Specialists","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133473878","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
DSP-based all digital, vector control induction motor drives for spindle system 基于dsp的全数字，矢量控制感应电机驱动主轴系统
21st Annual IEEE Conference on Power Electronics Specialists Pub Date : 1990-06-11 DOI: 10.1109/PESC.1990.131248
H. Matsugae, Y. Hatchisu, Y. Nagao, K. Fujita
{"title":"DSP-based all digital, vector control induction motor drives for spindle system","authors":"H. Matsugae, Y. Hatchisu, Y. Nagao, K. Fujita","doi":"10.1109/PESC.1990.131248","DOIUrl":"https://doi.org/10.1109/PESC.1990.131248","url":null,"abstract":"Fuji has developed a vector control voltage type inverter for driving induction motors at variable speeds. This machine tool main shaft drive system incorporates a digital signal processor (DSP) to provide all digital control and DC current component control method. This approach features compact design and high performance. Experimental results are presented.<<ETX>>","PeriodicalId":330807,"journal":{"name":"21st Annual IEEE Conference on Power Electronics Specialists","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121983481","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: 5
Onset of current filamentation in GTO devices GTO器件中电流成丝的开始
21st Annual IEEE Conference on Power Electronics Specialists Pub Date : 1990-06-11 DOI: 10.1109/PESC.1990.131215
K. Lilja, H. Gruning
{"title":"Onset of current filamentation in GTO devices","authors":"K. Lilja, H. Gruning","doi":"10.1109/PESC.1990.131215","DOIUrl":"https://doi.org/10.1109/PESC.1990.131215","url":null,"abstract":"The onset of inhomogeneous current distribution at turn-off of fine-structured gate turn-off thyristors was investigated. The investigation has been done using two-dimensional device simulation to describe how a perturbed thyristor cell, located in a surrounding of unperturbed cells, behaves during a turn-off sequence. Criteria for absolute stability and a description of the development of an instability are given. It is found that this onset current filamentation can be avoided if a turn-off gain less than a certain critical value, B/sub crit/, is used, and a homogeneous turn-off can be achieved. B/sub crit/ is always less than 1.0, i.e more current must be extracted from the gate than flows through the device in the on state.<<ETX>>","PeriodicalId":330807,"journal":{"name":"21st Annual IEEE Conference on Power Electronics Specialists","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127100552","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: 18
Determining current sharing criterion for parallel operation of power converters in multi-module bus systems 多模块母线系统中功率变换器并联运行的电流分担准则的确定
21st Annual IEEE Conference on Power Electronics Specialists Pub Date : 1990-06-11 DOI: 10.1109/PESC.1990.131280
J. Boček, C. Liu
{"title":"Determining current sharing criterion for parallel operation of power converters in multi-module bus systems","authors":"J. Boček, C. Liu","doi":"10.1109/PESC.1990.131280","DOIUrl":"https://doi.org/10.1109/PESC.1990.131280","url":null,"abstract":"A DC model for a computer backplane power distribution system with multiple sources and loads is proposed. Criteria are derived to determine the allowable range of variation in DC output voltage for a power module operating in a multiple-source, multiple-load system with a backplane interconnect. These criteria impose constraints on output voltage as a consequence of load voltage specifications, and of current-sharing accuracy required of the sources. An algorithm for implementing the solution of these criteria is presented. Computational results for two examples of power distribution systems using this algorithm are presented. The advantage of the system model is that a complete description is provided for a generalized power bus system, which may include ground and power planes of arbitrary geometry. The advantages of the algorithm are that the constraints determined for source voltage are valid under all combinations of load variation and source voltage variation.<<ETX>>","PeriodicalId":330807,"journal":{"name":"21st Annual IEEE Conference on Power Electronics Specialists","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115792327","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
An efficient high frequency high power off-line DC-DC converter topology 一种高效的高频大功率离线DC-DC变换器拓扑结构
21st Annual IEEE Conference on Power Electronics Specialists Pub Date : 1990-06-11 DOI: 10.1109/PESC.1990.131186
V. Agelidis, P. Ziogas, G. Joós
{"title":"An efficient high frequency high power off-line DC-DC converter topology","authors":"V. Agelidis, P. Ziogas, G. Joós","doi":"10.1109/PESC.1990.131186","DOIUrl":"https://doi.org/10.1109/PESC.1990.131186","url":null,"abstract":"A full-bridge switch mode PWM (pulse-width modulation) DC-DC converter topology is discussed. It minimizes switching losses and resulting stresses through the use of a DC bus active snubber. This circuit ensures that the switch parasitic (or discrete) capacitances are discharged before switch turn-on and the associated energy is returned to the DC bus. The resulting converter performance includes near-zero switching losses as well as protection from DC bus shoot-throughs. A complete analysis and design procedure are presented. Theoretical results have been verified experimentally on a 2 kW, 20 kHz laboratory prototype.<<ETX>>","PeriodicalId":330807,"journal":{"name":"21st Annual IEEE Conference on Power Electronics Specialists","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116630055","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: 9
The calculation of subharmonics in an asynchronous PWM induction motor drive 异步PWM感应电机驱动的次谐波计算
21st Annual IEEE Conference on Power Electronics Specialists Pub Date : 1990-06-11 DOI: 10.1109/PESC.1990.131253
W. Dunford
{"title":"The calculation of subharmonics in an asynchronous PWM induction motor drive","authors":"W. Dunford","doi":"10.1109/PESC.1990.131253","DOIUrl":"https://doi.org/10.1109/PESC.1990.131253","url":null,"abstract":"An asynchronous PWM (pulse width modulation) scheme developed for a traction application is described. This method for determining nonintegral harmonics involves an application of Fourier analysis to the output waveform. Results are presented, including pulse quantization in the controller. The subharmonic content is shown graphically as a function of the modulating frequency ratio to establish the ratio at which subharmonic may be neglected. There is no significant subharmonic production for the three types of modulation technique analyzed. For practical frequency ratios, quantization effects are more significant than differences in modulation technique.<<ETX>>","PeriodicalId":330807,"journal":{"name":"21st Annual IEEE Conference on Power Electronics Specialists","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128857192","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
Stator flux oriented asynchronous vector modulation for AC-drives 交流驱动定子磁链定向异步矢量调制
21st Annual IEEE Conference on Power Electronics Specialists Pub Date : 1990-06-11 DOI: 10.1109/PESC.1990.131249
P. Thogersen, J. Pedersen
{"title":"Stator flux oriented asynchronous vector modulation for AC-drives","authors":"P. Thogersen, J. Pedersen","doi":"10.1109/PESC.1990.131249","DOIUrl":"https://doi.org/10.1109/PESC.1990.131249","url":null,"abstract":"A vector modulation strategy (stator flux-oriented asynchronous vector modulation, of SFAVM) for voltage stiff pulse-width-modulation (PWM)-inverters in three-phase AC drives is presented. Switching between the voltage vectors is achieved on the basis of a desired trajectory for the state flux vector, which determines the airgap torque of the AC machine. This strategy with constant switching periods and duty cycles proportional to the voltage amplitude makes it possible to operate with a one-dimensional look-up table, conventional digital control schemes with constant sampling periods, and full synchronization between controllers and the switching process in the PWM-inverter. The fundamental current component can be obtained directly by sampling twice in each switching period without filtering, and the controller sampling period can be half the switching period, which makes it possible to exploit the maximum torque bandwidth of the AC drive. SFAVM is suited for fully digital fast response control of AC drives.<<ETX>>","PeriodicalId":330807,"journal":{"name":"21st Annual IEEE Conference on Power Electronics Specialists","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114377865","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: 41
Systems for induction heating and melting applications: a comparison of load commutated inverter 感应加热和熔化应用系统:负载换相逆变器的比较
21st Annual IEEE Conference on Power Electronics Specialists Pub Date : 1990-06-11 DOI: 10.1109/PESC.1990.131200
F. Dawson, P. Jain
{"title":"Systems for induction heating and melting applications: a comparison of load commutated inverter","authors":"F. Dawson, P. Jain","doi":"10.1109/PESC.1990.131200","DOIUrl":"https://doi.org/10.1109/PESC.1990.131200","url":null,"abstract":"A comparative analysis of current-source and voltage-source inverters suitable for induction heating and melting applications is presented. The comparison is based on criteria such as input power factor, component ratings, maximum and minimum operating frequencies, operation under varying load conditions, inverter starting capability, and system and control simplicity. Both power supplies considered operated on the principle of load commutation. Coil parameters suitable for specifying the power supply requirements are described. The results of the comparative analysis show that the voltage-source series tuned inverter offers a better converter utilization than the current-source inverter. The voltage-source inverter's only shortcoming is the transient flux requirement for the matching transformer. This problem is most severe at frequencies below 400 Hz and does not have much significance above 1 kHz from a practical point of view.<<ETX>>","PeriodicalId":330807,"journal":{"name":"21st Annual IEEE Conference on Power Electronics Specialists","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124205326","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: 23
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