Pub Date : 1998-07-19DOI: 10.1109/CIPE.1998.779673
C. Lechevalier, L. Gerbaud, J. Bigeon
Nowadays, the designer uses an assembly of existing structures to design a complete static converter structure. The resulting structures are generally very attached to a specific technology and are not very new. To avoid this, a functional description is proposed here in order to take into account the technological aspect very later in the design process. In such an approach, specifications are mainly defined by qualitative criteria, which implies numerous problems developed in the paper. Here, an example of a simple functional graph building is presented to show how a coherence checking can be automatically carried out thanks to the functional approach proposed in this paper. In the future, our final goal is to build an expert system for static converter structure design.
{"title":"Functional description of static converter for CAD","authors":"C. Lechevalier, L. Gerbaud, J. Bigeon","doi":"10.1109/CIPE.1998.779673","DOIUrl":"https://doi.org/10.1109/CIPE.1998.779673","url":null,"abstract":"Nowadays, the designer uses an assembly of existing structures to design a complete static converter structure. The resulting structures are generally very attached to a specific technology and are not very new. To avoid this, a functional description is proposed here in order to take into account the technological aspect very later in the design process. In such an approach, specifications are mainly defined by qualitative criteria, which implies numerous problems developed in the paper. Here, an example of a simple functional graph building is presented to show how a coherence checking can be automatically carried out thanks to the functional approach proposed in this paper. In the future, our final goal is to build an expert system for static converter structure design.","PeriodicalId":250682,"journal":{"name":"COM.P.EL.98. Record 6th Workshop on Computer in Power Electronics (Cat. No.98TH8358)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125264966","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}
Pub Date : 1998-07-19DOI: 10.1109/CIPE.1998.779675
G. Joós
The operation of static power converters used in active filters can be simulated by means of widely available circuit simulation software packages such as PSpice. In these studies, converters are usually modeled as a set of real or idealized switches, which may result in long execution times and possible convergence problems, particularly in complex circuits. This paper proposes the use of macromodels to simulate active filters. The macromodels are based on converter switching functions rather than actual circuit components, and they are well suited for steady state and large signal transient analysis at the system level. In this approach, the converters are simulated as multiport networks avoiding the physical nonlinear micromodels associated with power switches. Computer memory and execution times required for the simulation of the power circuit are thereby significantly reduced. The procedure also allows rapid design of filter components, in particular passive elements such as inductors and capacitors. Complete examples of typical shunt filters are given to illustrate the effectiveness of the proposed models.
{"title":"Simulation of active power filters using switching functions","authors":"G. Joós","doi":"10.1109/CIPE.1998.779675","DOIUrl":"https://doi.org/10.1109/CIPE.1998.779675","url":null,"abstract":"The operation of static power converters used in active filters can be simulated by means of widely available circuit simulation software packages such as PSpice. In these studies, converters are usually modeled as a set of real or idealized switches, which may result in long execution times and possible convergence problems, particularly in complex circuits. This paper proposes the use of macromodels to simulate active filters. The macromodels are based on converter switching functions rather than actual circuit components, and they are well suited for steady state and large signal transient analysis at the system level. In this approach, the converters are simulated as multiport networks avoiding the physical nonlinear micromodels associated with power switches. Computer memory and execution times required for the simulation of the power circuit are thereby significantly reduced. The procedure also allows rapid design of filter components, in particular passive elements such as inductors and capacitors. Complete examples of typical shunt filters are given to illustrate the effectiveness of the proposed models.","PeriodicalId":250682,"journal":{"name":"COM.P.EL.98. Record 6th Workshop on Computer in Power Electronics (Cat. No.98TH8358)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133945431","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}
Pub Date : 1998-07-19DOI: 10.1109/CIPE.1998.779664
B. Busco, G. Iuliano, P. Marino, V. Mungiguerra, F. Vasca
A new tool for the simulation of interacting and multi-board controlled power electronic systems is presented. The C-written object-oriented tool, inspired by an Ansaldo Trasporti Napoli traction application, is executable in a Windows'95 environment on a standard PC. Each object is completely defined by its initialization and input, output and state variables. The whole system is constructed by linking the elementary objects. The simulation of the DSP-based boards allows checking of the control code by simulations and it guarantees its portability on the real-time board.
{"title":"Simulation tool for multi-board controlled power electronic systems","authors":"B. Busco, G. Iuliano, P. Marino, V. Mungiguerra, F. Vasca","doi":"10.1109/CIPE.1998.779664","DOIUrl":"https://doi.org/10.1109/CIPE.1998.779664","url":null,"abstract":"A new tool for the simulation of interacting and multi-board controlled power electronic systems is presented. The C-written object-oriented tool, inspired by an Ansaldo Trasporti Napoli traction application, is executable in a Windows'95 environment on a standard PC. Each object is completely defined by its initialization and input, output and state variables. The whole system is constructed by linking the elementary objects. The simulation of the DSP-based boards allows checking of the control code by simulations and it guarantees its portability on the real-time board.","PeriodicalId":250682,"journal":{"name":"COM.P.EL.98. Record 6th Workshop on Computer in Power Electronics (Cat. No.98TH8358)","volume":"189 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133709435","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}
Pub Date : 1998-07-19DOI: 10.1109/CIPE.1998.779661
S. Carmeli, F. Castelli Dezza, A. Monti
This paper presents an original approach based on the design and application of a real time simulator for electrical drives fed by an inverter. The hardware and software structure are described in detail so as to underline the most critical aspects of such a system. A detailed analysis is dedicated to the problem of inverter interface and input signal decoding. The virtual interface for a man machine interface and its potentialities are presented.
{"title":"A new platform for real time testing of electrical drive digital control","authors":"S. Carmeli, F. Castelli Dezza, A. Monti","doi":"10.1109/CIPE.1998.779661","DOIUrl":"https://doi.org/10.1109/CIPE.1998.779661","url":null,"abstract":"This paper presents an original approach based on the design and application of a real time simulator for electrical drives fed by an inverter. The hardware and software structure are described in detail so as to underline the most critical aspects of such a system. A detailed analysis is dedicated to the problem of inverter interface and input signal decoding. The virtual interface for a man machine interface and its potentialities are presented.","PeriodicalId":250682,"journal":{"name":"COM.P.EL.98. Record 6th Workshop on Computer in Power Electronics (Cat. No.98TH8358)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121118376","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}
Pub Date : 1998-07-19DOI: 10.1109/CIPE.1998.779666
R. Ramos, A. Manuel, J.A. Gomez, X. Roset, F. Guinjoan, A. Garrido
This work deals with PWM switching regulator's frequency characterization in the time domain. The circular convolution measurement method is analyzed and implemented by means of virtual instrumentation. Laboratory test on a buck and a boost switching converters are performed in order to evaluate this method in terms of quality indexes such as accuracy and measurement time.
{"title":"Circular convolution a method for DC-DC switching converters nonparametric characterization","authors":"R. Ramos, A. Manuel, J.A. Gomez, X. Roset, F. Guinjoan, A. Garrido","doi":"10.1109/CIPE.1998.779666","DOIUrl":"https://doi.org/10.1109/CIPE.1998.779666","url":null,"abstract":"This work deals with PWM switching regulator's frequency characterization in the time domain. The circular convolution measurement method is analyzed and implemented by means of virtual instrumentation. Laboratory test on a buck and a boost switching converters are performed in order to evaluate this method in terms of quality indexes such as accuracy and measurement time.","PeriodicalId":250682,"journal":{"name":"COM.P.EL.98. Record 6th Workshop on Computer in Power Electronics (Cat. No.98TH8358)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126072961","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}
Pub Date : 1998-07-19DOI: 10.1109/CIPE.1998.779681
E. Niculescu, A. Cirstea
In this paper, an algorithm and a program for the computation of the averaged characteristic coefficients of elementary DC-DC PWM converters (buck, boost, buck-boost), in both operating modes (continuous and discontinuous), are presented. The program is principally conceived for the element determination of the unique circuit model for a PWM converter. This circuit model with fixed topology has the same structure as well as the circuit model from the injected-absorbed-current method. But, the elements of the circuit model, that is the characteristic coefficients, are deduced from the small-signal averaged model obtained through the state-space averaging method.
{"title":"Computation of averaged characteristic coefficients for elementary PWM converters","authors":"E. Niculescu, A. Cirstea","doi":"10.1109/CIPE.1998.779681","DOIUrl":"https://doi.org/10.1109/CIPE.1998.779681","url":null,"abstract":"In this paper, an algorithm and a program for the computation of the averaged characteristic coefficients of elementary DC-DC PWM converters (buck, boost, buck-boost), in both operating modes (continuous and discontinuous), are presented. The program is principally conceived for the element determination of the unique circuit model for a PWM converter. This circuit model with fixed topology has the same structure as well as the circuit model from the injected-absorbed-current method. But, the elements of the circuit model, that is the characteristic coefficients, are deduced from the small-signal averaged model obtained through the state-space averaging method.","PeriodicalId":250682,"journal":{"name":"COM.P.EL.98. Record 6th Workshop on Computer in Power Electronics (Cat. No.98TH8358)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122012037","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}
Pub Date : 1998-07-19DOI: 10.1109/CIPE.1998.779657
E. Napoli, A. Strollo
Numerical simulations are used to analyse the effect on static and dynamic behavior of local lifetime control applied to power PiN diodes. Extended use of mixed mode device circuit simulations allows the analysis of diode behavior in realistic working conditions. In the paper the emphasis is given on the effect of the position and of the extension of the reduced lifetime region on diode performance. The low lifetime region, the result of complex damage in the epilayer, is approximated with a rectangular shape in the simulator, and is defined by its thickness, position and amount of lifetime reduction. The simulations show that the optimal position for the low-lifetime region is at the beginning of the epilayer region on the anode side, while the optimal thickness of the low lifetime region depends on the amount of lifetime reduction. The local lifetime control design technique is shown to be effective in reducing the turn-off time and increasing diode softness with a little worsening of on-state voltage drop. It is shown that the trade-off curve obtained by diodes using local lifetime control is better than the one achieved with lifetime killing in the whole epilayer region.
{"title":"Power PiN diode performance improvement through local lifetime control: numerical analysis","authors":"E. Napoli, A. Strollo","doi":"10.1109/CIPE.1998.779657","DOIUrl":"https://doi.org/10.1109/CIPE.1998.779657","url":null,"abstract":"Numerical simulations are used to analyse the effect on static and dynamic behavior of local lifetime control applied to power PiN diodes. Extended use of mixed mode device circuit simulations allows the analysis of diode behavior in realistic working conditions. In the paper the emphasis is given on the effect of the position and of the extension of the reduced lifetime region on diode performance. The low lifetime region, the result of complex damage in the epilayer, is approximated with a rectangular shape in the simulator, and is defined by its thickness, position and amount of lifetime reduction. The simulations show that the optimal position for the low-lifetime region is at the beginning of the epilayer region on the anode side, while the optimal thickness of the low lifetime region depends on the amount of lifetime reduction. The local lifetime control design technique is shown to be effective in reducing the turn-off time and increasing diode softness with a little worsening of on-state voltage drop. It is shown that the trade-off curve obtained by diodes using local lifetime control is better than the one achieved with lifetime killing in the whole epilayer region.","PeriodicalId":250682,"journal":{"name":"COM.P.EL.98. Record 6th Workshop on Computer in Power Electronics (Cat. No.98TH8358)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124974497","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}
Pub Date : 1998-07-19DOI: 10.1109/CIPE.1998.779678
V. Thottuvelil, G. Verghese
Aliasing effects in pulse-width-modulated power converters are explored by first using switched-circuit simulation to generate circuit waveforms and then analyzing their spectral content using FFTs. The results for a basic PWM boost converter running open-loop under voltage-mode control show that perturbing the control signal or input voltage at frequencies close to the switching frequency or its harmonics can give rise to significant aliased components at the low difference frequency. The simulation results reinforce the concerns raised in regarding the limitations of small-signal frequency-response information in frequency ranges where aliasing is significant. The key steps in analyzing the observed simulation results is also presented.
{"title":"Simulation-based exploration of aliasing effects in PWM power converters","authors":"V. Thottuvelil, G. Verghese","doi":"10.1109/CIPE.1998.779678","DOIUrl":"https://doi.org/10.1109/CIPE.1998.779678","url":null,"abstract":"Aliasing effects in pulse-width-modulated power converters are explored by first using switched-circuit simulation to generate circuit waveforms and then analyzing their spectral content using FFTs. The results for a basic PWM boost converter running open-loop under voltage-mode control show that perturbing the control signal or input voltage at frequencies close to the switching frequency or its harmonics can give rise to significant aliased components at the low difference frequency. The simulation results reinforce the concerns raised in regarding the limitations of small-signal frequency-response information in frequency ranges where aliasing is significant. The key steps in analyzing the observed simulation results is also presented.","PeriodicalId":250682,"journal":{"name":"COM.P.EL.98. Record 6th Workshop on Computer in Power Electronics (Cat. No.98TH8358)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129706683","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}
Pub Date : 1998-07-19DOI: 10.1109/CIPE.1998.779677
Y. H. Lim, D. C. Hamill
We analyse a simple model of a spacecraft power system comprising a solar array, a filter and a model of a buck converter, by studying a set of third-order nonlinear differential equations. The analysis is based on nonlinear-dynamics concepts, which reveal bifurcation, hysteresis and chaos, and is supported by simulation results.
{"title":"Nonlinear phenomena in a model spacecraft power system","authors":"Y. H. Lim, D. C. Hamill","doi":"10.1109/CIPE.1998.779677","DOIUrl":"https://doi.org/10.1109/CIPE.1998.779677","url":null,"abstract":"We analyse a simple model of a spacecraft power system comprising a solar array, a filter and a model of a buck converter, by studying a set of third-order nonlinear differential equations. The analysis is based on nonlinear-dynamics concepts, which reveal bifurcation, hysteresis and chaos, and is supported by simulation results.","PeriodicalId":250682,"journal":{"name":"COM.P.EL.98. Record 6th Workshop on Computer in Power Electronics (Cat. No.98TH8358)","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134016975","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}
Pub Date : 1998-07-19DOI: 10.1109/CIPE.1998.779654
J. Orozco, P. Najera, A. C. Sánchez, J. Aran
This work presents the behavior analysis of the IGBT under zero current switching (ZCS) conditions and the design considerations of a special test circuit used to study power semiconductors. The conditions of the operation mode selected, single-shot, allows limits of the power source consumption, which allows different tests to be carried out in extreme operating conditions. The advantages of the special test circuit allow study under different operating conditions such as: frequency increments and quantity of stored charge as a function of the OFF time.
{"title":"Analysis of the IGBT under QR-ZCS operation using a special test circuit","authors":"J. Orozco, P. Najera, A. C. Sánchez, J. Aran","doi":"10.1109/CIPE.1998.779654","DOIUrl":"https://doi.org/10.1109/CIPE.1998.779654","url":null,"abstract":"This work presents the behavior analysis of the IGBT under zero current switching (ZCS) conditions and the design considerations of a special test circuit used to study power semiconductors. The conditions of the operation mode selected, single-shot, allows limits of the power source consumption, which allows different tests to be carried out in extreme operating conditions. The advantages of the special test circuit allow study under different operating conditions such as: frequency increments and quantity of stored charge as a function of the OFF time.","PeriodicalId":250682,"journal":{"name":"COM.P.EL.98. Record 6th Workshop on Computer in Power Electronics (Cat. No.98TH8358)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133572963","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：