Pub Date : 1986-06-23DOI: 10.1109/PESC.1986.7415560
Y. Kuroe, Nobuyuki Kanayama, T. Maruhashi
In recent years there has been paid much attention to the development of computer aided methods in analysis and design of power electronic circuits because the recent advances of switching power semiconductor devices. In this paper we propose a new and efficient computer aided algorithm for computing parameter sensitivities of turn-on and turn-off instants of power semiconductors for any given power electronic circuits. It is shown that sensitivities of switching instants of power electronic circuits are expressed in terms of parameter sensitivities of voltage and current values by using implicit function theorem. The adjoint network approach based on Tellegen's theorem is employed for calculating those sensitivities. The optimal circuit design method by making use of the sensitivity calculation is also developed. Their superior performance is demonstrated through some examples by using the implemented computer packages.
{"title":"Computer aided method to analyze parameter sensitivity of switching time of power semiconductors and its application to optimal design for power electronic circuits","authors":"Y. Kuroe, Nobuyuki Kanayama, T. Maruhashi","doi":"10.1109/PESC.1986.7415560","DOIUrl":"https://doi.org/10.1109/PESC.1986.7415560","url":null,"abstract":"In recent years there has been paid much attention to the development of computer aided methods in analysis and design of power electronic circuits because the recent advances of switching power semiconductor devices. In this paper we propose a new and efficient computer aided algorithm for computing parameter sensitivities of turn-on and turn-off instants of power semiconductors for any given power electronic circuits. It is shown that sensitivities of switching instants of power electronic circuits are expressed in terms of parameter sensitivities of voltage and current values by using implicit function theorem. The adjoint network approach based on Tellegen's theorem is employed for calculating those sensitivities. The optimal circuit design method by making use of the sensitivity calculation is also developed. Their superior performance is demonstrated through some examples by using the implemented computer packages.","PeriodicalId":164857,"journal":{"name":"1986 17th Annual IEEE Power Electronics Specialists Conference","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130635816","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 : 1986-06-23DOI: 10.1109/PESC.1986.7415565
A. Dauhajre, R. Middlebrook
A new modelling method for magnetic circuits is presented. The method can be used to model magnetic circuits with any number of windings. The models incorporate adequate information about the correct distribution of leakage energy, the presence of gaps throughout the core, the arrangement of the windings, and the type of core used. Several commonly used arrangements such as toroids with uniformly distributed turns, and bobbin core structures with multiple windings were modelled with the new technique. The measured electric circuit model values always compared favorably with the predicted physical values derived with the new method.
{"title":"Modelling and estimation of leakage phenomena in magnetic circuits","authors":"A. Dauhajre, R. Middlebrook","doi":"10.1109/PESC.1986.7415565","DOIUrl":"https://doi.org/10.1109/PESC.1986.7415565","url":null,"abstract":"A new modelling method for magnetic circuits is presented. The method can be used to model magnetic circuits with any number of windings. The models incorporate adequate information about the correct distribution of leakage energy, the presence of gaps throughout the core, the arrangement of the windings, and the type of core used. Several commonly used arrangements such as toroids with uniformly distributed turns, and bobbin core structures with multiple windings were modelled with the new technique. The measured electric circuit model values always compared favorably with the predicted physical values derived with the new method.","PeriodicalId":164857,"journal":{"name":"1986 17th Annual IEEE Power Electronics Specialists Conference","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122082747","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 : 1986-06-23DOI: 10.1109/PESC.1986.7415615
K. Takaku, M. Yamamoto
Generating torque in starting of self-controlled synchronous motor is analyzed, and the developed method of torque measurement using the space rotating current vector is described. A self-controlled synchronous motor known as a commutatorless dc motor, consists of a synchronous motor with a shaft position sensor and a inverter switched by the pulses from the position sensor. The inverter frequency is the functions of the motor speed, and in lower speed range during the synchronous motor starting period, the low frequency current leads to a rectangular waveform. Then, the current waveform produces torque pulsation. In this case, an analysis of the starting characteristics of the commutation of the inverter is presented, and the measurement results of the generating torque and shaft torque are shown.
{"title":"Generating torque analysis and measurement by space rotating current vector during self-controlled synchronous motor starting","authors":"K. Takaku, M. Yamamoto","doi":"10.1109/PESC.1986.7415615","DOIUrl":"https://doi.org/10.1109/PESC.1986.7415615","url":null,"abstract":"Generating torque in starting of self-controlled synchronous motor is analyzed, and the developed method of torque measurement using the space rotating current vector is described. A self-controlled synchronous motor known as a commutatorless dc motor, consists of a synchronous motor with a shaft position sensor and a inverter switched by the pulses from the position sensor. The inverter frequency is the functions of the motor speed, and in lower speed range during the synchronous motor starting period, the low frequency current leads to a rectangular waveform. Then, the current waveform produces torque pulsation. In this case, an analysis of the starting characteristics of the commutation of the inverter is presented, and the measurement results of the generating torque and shaft torque are shown.","PeriodicalId":164857,"journal":{"name":"1986 17th Annual IEEE Power Electronics Specialists Conference","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123961817","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 : 1986-06-23DOI: 10.1109/PESC.1986.7415597
H. van der Broeck, H. Skudelny
The paper presents a novel analysis of the harmonic content of current, torque pulsations and harmonic copper losses of a three phase induction machine fed by a two phase PWM inverter. The purely analytical results are based on the assumption that the switching frequency is high compared with the fundamental frequency. However, it turns out that the results hold for frequency ratios fs/f1 > 9.
{"title":"Analytical calculation on the harmonic effects of a three phase induction machine fed by a two phase voltage fed inverter using pulse width modulation with high switching frequency","authors":"H. van der Broeck, H. Skudelny","doi":"10.1109/PESC.1986.7415597","DOIUrl":"https://doi.org/10.1109/PESC.1986.7415597","url":null,"abstract":"The paper presents a novel analysis of the harmonic content of current, torque pulsations and harmonic copper losses of a three phase induction machine fed by a two phase PWM inverter. The purely analytical results are based on the assumption that the switching frequency is high compared with the fundamental frequency. However, it turns out that the results hold for frequency ratios fs/f1 > 9.","PeriodicalId":164857,"journal":{"name":"1986 17th Annual IEEE Power Electronics Specialists Conference","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134415898","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 : 1986-06-23DOI: 10.1109/PESC.1986.7415566
Katsuhiko Yamamoto, T. Sugiura
This paper describes the analysis and design method for a new biased rectifier amplifier (BRAM). The BRAM, driven by a high frequency square wave, employs a new self-biased circuit configuration. Applying the BRAM to a DC current detector makes it possible to obtain a highly accurate constant current DC-DC converter.
{"title":"A new BRAM DC current detector for a highly accurate DC-DC constant current converter","authors":"Katsuhiko Yamamoto, T. Sugiura","doi":"10.1109/PESC.1986.7415566","DOIUrl":"https://doi.org/10.1109/PESC.1986.7415566","url":null,"abstract":"This paper describes the analysis and design method for a new biased rectifier amplifier (BRAM). The BRAM, driven by a high frequency square wave, employs a new self-biased circuit configuration. Applying the BRAM to a DC current detector makes it possible to obtain a highly accurate constant current DC-DC converter.","PeriodicalId":164857,"journal":{"name":"1986 17th Annual IEEE Power Electronics Specialists Conference","volume":"285 9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132271168","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 : 1986-06-23DOI: 10.1109/PESC.1986.7415570
J. Sebastián, J. Uceda, P. Aldana
This paper offers a new solution to the design of two-output dc-to-dc converters having one sole power transistor. The combination of a resonant converter and a tapped-inductor converter is the basis of this new approach which represents an improvement on previous studies. The fact that the dc voltage gain of the resonant converter is a function of the switching frequency but not of the load nor of the duty cycle and the fact that the tapped-inductor converter is a function of the duty cycle but not of the frequency nor of the load, enables the two outputs to be regulated with only small switching frequency variations and with only slight interaction between the two outputs. A prototype of this converter has been built and the results are discussed.
{"title":"New topologies of fully regulated two-output dc-to-dc converters with small frequency variation range","authors":"J. Sebastián, J. Uceda, P. Aldana","doi":"10.1109/PESC.1986.7415570","DOIUrl":"https://doi.org/10.1109/PESC.1986.7415570","url":null,"abstract":"This paper offers a new solution to the design of two-output dc-to-dc converters having one sole power transistor. The combination of a resonant converter and a tapped-inductor converter is the basis of this new approach which represents an improvement on previous studies. The fact that the dc voltage gain of the resonant converter is a function of the switching frequency but not of the load nor of the duty cycle and the fact that the tapped-inductor converter is a function of the duty cycle but not of the frequency nor of the load, enables the two outputs to be regulated with only small switching frequency variations and with only slight interaction between the two outputs. A prototype of this converter has been built and the results are discussed.","PeriodicalId":164857,"journal":{"name":"1986 17th Annual IEEE Power Electronics Specialists Conference","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133556703","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 : 1986-06-23DOI: 10.1109/PESC.1986.7415576
J. Holtz, W. Lotzkat, K.-H. Werner
The active and reactive load distribution between n paralleled single-phase UPS inverters is equalized by virtue of n − 1 load sharing control loops. The approach permits the construction of UPS systems of any desired power rating at maximum utilization of the power components. The method of harmonic cancellation decreases the switching frequency of the power devices while maintaining good dynamic performance. The design details of a 45 kVA UPS inverter system with 150 % steady-state overload capability are presented. The performance at various operating conditions is illustrated by oscillograms.
{"title":"A high-power multi transistor-inverter uninterruptable power supply system","authors":"J. Holtz, W. Lotzkat, K.-H. Werner","doi":"10.1109/PESC.1986.7415576","DOIUrl":"https://doi.org/10.1109/PESC.1986.7415576","url":null,"abstract":"The active and reactive load distribution between n paralleled single-phase UPS inverters is equalized by virtue of n − 1 load sharing control loops. The approach permits the construction of UPS systems of any desired power rating at maximum utilization of the power components. The method of harmonic cancellation decreases the switching frequency of the power devices while maintaining good dynamic performance. The design details of a 45 kVA UPS inverter system with 150 % steady-state overload capability are presented. The performance at various operating conditions is illustrated by oscillograms.","PeriodicalId":164857,"journal":{"name":"1986 17th Annual IEEE Power Electronics Specialists Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129053709","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 : 1986-06-23DOI: 10.1109/PESC.1986.7415584
J. Jalade, S. Senanayake
In this article, the authors present the design and realisation of a DC/AC inverter. The power cell described is reversible and thus enables the handling of highly reactive loads. A state variable feed-back study leads to the large signal mastery of the power cell. The adaptation of the feedback loop for load variations and source voltage variations are also considered. The article concludes with the presentation of measurements made on a breadboard realisation which testifies as to why this power cell and its control law become a focus of interest.
{"title":"Reversible power cell contributes to efficient light weight inverter","authors":"J. Jalade, S. Senanayake","doi":"10.1109/PESC.1986.7415584","DOIUrl":"https://doi.org/10.1109/PESC.1986.7415584","url":null,"abstract":"In this article, the authors present the design and realisation of a DC/AC inverter. The power cell described is reversible and thus enables the handling of highly reactive loads. A state variable feed-back study leads to the large signal mastery of the power cell. The adaptation of the feedback loop for load variations and source voltage variations are also considered. The article concludes with the presentation of measurements made on a breadboard realisation which testifies as to why this power cell and its control law become a focus of interest.","PeriodicalId":164857,"journal":{"name":"1986 17th Annual IEEE Power Electronics Specialists Conference","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131721316","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 : 1986-06-23DOI: 10.1109/PESC.1986.7415601
A. Miles, B. Lequesne
Generalized root-loci techniques, developed in the mid-70's for squirrel cage motors, have been extended to wound rotor, slip energy recovery systems (static Scherbius drive). In this paper, the influence of a feedback control loop on these root-loci is considered. General conclusions on Scherbius drive dynamics as well as some experimental verifications are also included.
{"title":"Closed-loop dynamic response of a static Scherbius drive","authors":"A. Miles, B. Lequesne","doi":"10.1109/PESC.1986.7415601","DOIUrl":"https://doi.org/10.1109/PESC.1986.7415601","url":null,"abstract":"Generalized root-loci techniques, developed in the mid-70's for squirrel cage motors, have been extended to wound rotor, slip energy recovery systems (static Scherbius drive). In this paper, the influence of a feedback control loop on these root-loci is considered. General conclusions on Scherbius drive dynamics as well as some experimental verifications are also included.","PeriodicalId":164857,"journal":{"name":"1986 17th Annual IEEE Power Electronics Specialists Conference","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124520897","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 : 1986-06-23DOI: 10.1109/PESC.1986.7415622
E. Tatakis
This paper presents an analytical solution for predicting switching performances of a forward power converter with insulation transformer. We will calculate the circuit wave-forms and especially those which concern the transistor, in relation to the parameters of the adopted converter.
{"title":"An analytical solution for predicting switching performances of a forward converter with insulation transformer","authors":"E. Tatakis","doi":"10.1109/PESC.1986.7415622","DOIUrl":"https://doi.org/10.1109/PESC.1986.7415622","url":null,"abstract":"This paper presents an analytical solution for predicting switching performances of a forward power converter with insulation transformer. We will calculate the circuit wave-forms and especially those which concern the transistor, in relation to the parameters of the adopted converter.","PeriodicalId":164857,"journal":{"name":"1986 17th Annual IEEE Power Electronics Specialists Conference","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116213279","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}
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