Pub Date : 1996-06-23DOI: 10.1109/PESC.1996.548760
N. Dai, F. Lee
Parasitic elements (resistance, inductance, and capacitance) of the transformer and circuit traces in power electronics circuit are characterized by using the software package ANSOFT. The effects of the parasitic elements on circuit operation are analyzed. Simulation and experimental results are compared and the parameter that has the most significant effect on circuit operation is determined. As a result, circuit layout optimization can be performed.
{"title":"Characterization and analysis of parasitic parameters and their effects in power electronics circuit","authors":"N. Dai, F. Lee","doi":"10.1109/PESC.1996.548760","DOIUrl":"https://doi.org/10.1109/PESC.1996.548760","url":null,"abstract":"Parasitic elements (resistance, inductance, and capacitance) of the transformer and circuit traces in power electronics circuit are characterized by using the software package ANSOFT. The effects of the parasitic elements on circuit operation are analyzed. Simulation and experimental results are compared and the parameter that has the most significant effect on circuit operation is determined. As a result, circuit layout optimization can be performed.","PeriodicalId":19979,"journal":{"name":"PESC Record. 27th Annual IEEE Power Electronics Specialists Conference","volume":"26 1","pages":"1370-1375 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1996-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72989273","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 : 1996-06-23DOI: 10.1109/PESC.1996.548563
M. Marx, A. Schlogl, K. Eder, D. Schroder
The investigation of switching power devices' behaviour at liquid nitrogen temperature has gained more and more significance with respect to developing superconducting applications. Most of the previous work in the literature focuses very much on the behaviour of separated turn-on or turn-off transitions of switching elements, and only a few publications consider the continuous switching operation in a power converter at low temperatures. In this paper different soft-switching converters and their hard-switched counterpart are compared regarding their performance at room temperature and at 77 K. Current and voltage waveforms at the switching elements is presented for single switching transitions and the overall converter efficiency during steady-state operation. It is shown that soft-switching at low temperatures no longer results in a clear increase of power density and converter efficiency, but may even result in a reduction of converter efficiency.
{"title":"Comparison of zero-voltage-switching converters at low temperatures","authors":"M. Marx, A. Schlogl, K. Eder, D. Schroder","doi":"10.1109/PESC.1996.548563","DOIUrl":"https://doi.org/10.1109/PESC.1996.548563","url":null,"abstract":"The investigation of switching power devices' behaviour at liquid nitrogen temperature has gained more and more significance with respect to developing superconducting applications. Most of the previous work in the literature focuses very much on the behaviour of separated turn-on or turn-off transitions of switching elements, and only a few publications consider the continuous switching operation in a power converter at low temperatures. In this paper different soft-switching converters and their hard-switched counterpart are compared regarding their performance at room temperature and at 77 K. Current and voltage waveforms at the switching elements is presented for single switching transitions and the overall converter efficiency during steady-state operation. It is shown that soft-switching at low temperatures no longer results in a clear increase of power density and converter efficiency, but may even result in a reduction of converter efficiency.","PeriodicalId":19979,"journal":{"name":"PESC Record. 27th Annual IEEE Power Electronics Specialists Conference","volume":"27 1","pages":"83-88 vol.1"},"PeriodicalIF":0.0,"publicationDate":"1996-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75315309","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 : 1996-06-23DOI: 10.1109/PESC.1996.548586
R. Oruganti, M. Palaniapan
A novel inductor voltage control method capable of achieving any input power factor including unity is proposed for both the single and three phase buck type AC-DC PWM converters. In this method, the input inductor voltage is kept within a hysteresis band about a sinusoidal template, thus ensuring sinusoidal input current. This control is much less sensitive to parameter and control signal changes than the existing delta modulation technique. Detailed analysis has been performed for a single phase converter. A new switching logic scheme is then proposed which enables the inductor voltage control (and delta modulation control) to be extended to a three phase converter also. For both single phase and three phase converters, simulation and experimental results have been provided. The proposed inductor voltage control method has potential in applications such as DC motor drives and AC-DC rectifier with current limiting.
{"title":"Inductor voltage controlled variable power factor buck-type AC-DC converter","authors":"R. Oruganti, M. Palaniapan","doi":"10.1109/PESC.1996.548586","DOIUrl":"https://doi.org/10.1109/PESC.1996.548586","url":null,"abstract":"A novel inductor voltage control method capable of achieving any input power factor including unity is proposed for both the single and three phase buck type AC-DC PWM converters. In this method, the input inductor voltage is kept within a hysteresis band about a sinusoidal template, thus ensuring sinusoidal input current. This control is much less sensitive to parameter and control signal changes than the existing delta modulation technique. Detailed analysis has been performed for a single phase converter. A new switching logic scheme is then proposed which enables the inductor voltage control (and delta modulation control) to be extended to a three phase converter also. For both single phase and three phase converters, simulation and experimental results have been provided. The proposed inductor voltage control method has potential in applications such as DC motor drives and AC-DC rectifier with current limiting.","PeriodicalId":19979,"journal":{"name":"PESC Record. 27th Annual IEEE Power Electronics Specialists Conference","volume":"246 1","pages":"230-237 vol.1"},"PeriodicalIF":0.0,"publicationDate":"1996-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75912917","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 : 1996-06-23DOI: 10.1109/PESC.1996.548559
A. Agbossou, I. Rasoanarivo, B. Davat
The paper presents a voltage source inverter using IGBT modules capable of supplying 500 kW to a high speed (30000 rpm) induction motor. It compares the behaviour of two IGBT macromodels of the inverter structure. One is based on the Hefner model and the other is a linear model derived by combining simple experimental measurements with designer supplied data. Simulation and experimental results for a single inverter leg are presented in the case of an inductive load.
{"title":"A comparative study of high power IGBT model behaviour in voltage source inverter","authors":"A. Agbossou, I. Rasoanarivo, B. Davat","doi":"10.1109/PESC.1996.548559","DOIUrl":"https://doi.org/10.1109/PESC.1996.548559","url":null,"abstract":"The paper presents a voltage source inverter using IGBT modules capable of supplying 500 kW to a high speed (30000 rpm) induction motor. It compares the behaviour of two IGBT macromodels of the inverter structure. One is based on the Hefner model and the other is a linear model derived by combining simple experimental measurements with designer supplied data. Simulation and experimental results for a single inverter leg are presented in the case of an inductive load.","PeriodicalId":19979,"journal":{"name":"PESC Record. 27th Annual IEEE Power Electronics Specialists Conference","volume":"12 1","pages":"56-61 vol.1"},"PeriodicalIF":0.0,"publicationDate":"1996-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81544630","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 : 1996-06-23DOI: 10.1109/PESC.1996.548822
J. Maas, H. Grotstollen
A rotary traveling wave type ultrasonic motor powered by a resonant power converter is analyzed by simulation to optimize the overall drive performance and to develop suitable control strategies for the drive. Based on a detailed simulation model for the total electromechanical system of the drive, various phenomena such as the well known pull-out phenomenon are verified by individual modeling aspects and explained by simulation. As the total characteristics are reflected by the simulation model and verified by measurements, a general control scheme for speed variable ultrasonic drives is suggested ensuring optimal torque utilization and minimized losses.
{"title":"Dynamic analysis of inverter-fed ultrasonic motors","authors":"J. Maas, H. Grotstollen","doi":"10.1109/PESC.1996.548822","DOIUrl":"https://doi.org/10.1109/PESC.1996.548822","url":null,"abstract":"A rotary traveling wave type ultrasonic motor powered by a resonant power converter is analyzed by simulation to optimize the overall drive performance and to develop suitable control strategies for the drive. Based on a detailed simulation model for the total electromechanical system of the drive, various phenomena such as the well known pull-out phenomenon are verified by individual modeling aspects and explained by simulation. As the total characteristics are reflected by the simulation model and verified by measurements, a general control scheme for speed variable ultrasonic drives is suggested ensuring optimal torque utilization and minimized losses.","PeriodicalId":19979,"journal":{"name":"PESC Record. 27th Annual IEEE Power Electronics Specialists Conference","volume":"17 1","pages":"1780-1786 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1996-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77053702","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 : 1996-06-23DOI: 10.1109/PESC.1996.548721
P. Chevrel, F. Auger, M. Machmoum
This paper shows the efficiency of the H/sub /spl infin// control design methodology for the case of the active filtering of single phase power networks. At first, a continuous time H/sub /spl infin// controller is designed which achieves all performances and robustness properties required. In particular, this approach allows one to choose the attenuation of each harmonic frequency independently of each other. Finally an effective 18th order discrete regulator is derived from the continuous one in an original way.
{"title":"H/sub /spl infin// control for a single-phase active power filter: a systematic approach","authors":"P. Chevrel, F. Auger, M. Machmoum","doi":"10.1109/PESC.1996.548721","DOIUrl":"https://doi.org/10.1109/PESC.1996.548721","url":null,"abstract":"This paper shows the efficiency of the H/sub /spl infin// control design methodology for the case of the active filtering of single phase power networks. At first, a continuous time H/sub /spl infin// controller is designed which achieves all performances and robustness properties required. In particular, this approach allows one to choose the attenuation of each harmonic frequency independently of each other. Finally an effective 18th order discrete regulator is derived from the continuous one in an original way.","PeriodicalId":19979,"journal":{"name":"PESC Record. 27th Annual IEEE Power Electronics Specialists Conference","volume":"22 1","pages":"1112-1118 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1996-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84113726","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 : 1996-06-23DOI: 10.1109/PESC.1996.548667
F. Hembert, P. Le Moigne, J. Cambronne
A series association of 'n' voltage source inverters (VSI) used as an active filter is proposed to perform high power filtering. A multilevel working is obtained with shifted control. An original control loop is defined to balance the n VSI capacitor voltages. Experimental results confirm the simulation and valid the theoretical study.
{"title":"Series association of VSI in high power active filtering","authors":"F. Hembert, P. Le Moigne, J. Cambronne","doi":"10.1109/PESC.1996.548667","DOIUrl":"https://doi.org/10.1109/PESC.1996.548667","url":null,"abstract":"A series association of 'n' voltage source inverters (VSI) used as an active filter is proposed to perform high power filtering. A multilevel working is obtained with shifted control. An original control loop is defined to balance the n VSI capacitor voltages. Experimental results confirm the simulation and valid the theoretical study.","PeriodicalId":19979,"journal":{"name":"PESC Record. 27th Annual IEEE Power Electronics Specialists Conference","volume":"17 1","pages":"759-764 vol.1"},"PeriodicalIF":0.0,"publicationDate":"1996-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82575591","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 : 1996-06-23DOI: 10.1109/PESC.1996.548594
C. Sullivan, S. Sanders
Experimental measurements are reported on microfabricated power conversion transformers. A device fabricated using a simplified 'sandwich' process confirms predicted performance in an 8 MHz DC-DC power converter, where it achieves a power-handling density of 22.4 W/cm/sup 2/ at 61% efficiency. Preliminary test results are reported for transformers based on a closed-core design, which is expected to achieve higher efficiency.
{"title":"Measured performance of a high-power-density microfabricated transformer in a DC-DC converter","authors":"C. Sullivan, S. Sanders","doi":"10.1109/PESC.1996.548594","DOIUrl":"https://doi.org/10.1109/PESC.1996.548594","url":null,"abstract":"Experimental measurements are reported on microfabricated power conversion transformers. A device fabricated using a simplified 'sandwich' process confirms predicted performance in an 8 MHz DC-DC power converter, where it achieves a power-handling density of 22.4 W/cm/sup 2/ at 61% efficiency. Preliminary test results are reported for transformers based on a closed-core design, which is expected to achieve higher efficiency.","PeriodicalId":19979,"journal":{"name":"PESC Record. 27th Annual IEEE Power Electronics Specialists Conference","volume":"20 1","pages":"287-294 vol.1"},"PeriodicalIF":0.0,"publicationDate":"1996-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78793744","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 : 1996-06-23DOI: 10.1109/PESC.1996.548589
A. Bhat, I. Zheng
A three-phase DC-to-DC LCC-type resonant converter with high-frequency transformer isolation is proposed. The operating mode, and a simple analysis of the converter are presented. Design curves are obtained and a design example is given. SPICE simulation and experimental recruits for the designed converter are presented to verify the performance of the proposed converter for varying load conditions. The converter proposed has several advantages, e.g., operates in lagging PF mode for the entire load range, requires a narrow variation in switching frequency, reduced component size and stresses, etc.
提出了一种采用高频变压器隔离的三相dc - dc lcc型谐振变换器。介绍了该变换器的工作模式，并对其进行了简单的分析。得到了设计曲线，并给出了设计实例。针对所设计的变换器进行了SPICE仿真和实验，验证了变换器在变负载条件下的性能。所提出的变换器具有几个优点，例如，在整个负载范围内以滞后PF模式工作，要求开关频率变化很小，减小元件尺寸和应力等。
{"title":"Analysis and design of a three-phase LCC-type resonant converter","authors":"A. Bhat, I. Zheng","doi":"10.1109/PESC.1996.548589","DOIUrl":"https://doi.org/10.1109/PESC.1996.548589","url":null,"abstract":"A three-phase DC-to-DC LCC-type resonant converter with high-frequency transformer isolation is proposed. The operating mode, and a simple analysis of the converter are presented. Design curves are obtained and a design example is given. SPICE simulation and experimental recruits for the designed converter are presented to verify the performance of the proposed converter for varying load conditions. The converter proposed has several advantages, e.g., operates in lagging PF mode for the entire load range, requires a narrow variation in switching frequency, reduced component size and stresses, etc.","PeriodicalId":19979,"journal":{"name":"PESC Record. 27th Annual IEEE Power Electronics Specialists Conference","volume":"176 13","pages":"252-258 vol.1"},"PeriodicalIF":0.0,"publicationDate":"1996-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91467108","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 : 1996-06-23DOI: 10.1109/PESC.1996.548828
Javier Sebastián, Pedro J. Villegas, Fernando Nũno, Oscar Garćıa, Jaime Arau
A new method to improve dynamic response of power factor preregulators (PFP) is developed in this paper. The method is based on the use of a very high efficiency post-regulator with two inputs instead of only one. This two-input post-regulator exhibits very high efficiency due to the fact that only a part of the total power undergoes a power conversion process. They need two-output PFPs at their inputs, which can easily be obtained in PFPs with transformers or with two PFPs working in parallel.
{"title":"Improving dynamic response of power factor preregulators by using two-input high-efficient post-regulators","authors":"Javier Sebastián, Pedro J. Villegas, Fernando Nũno, Oscar Garćıa, Jaime Arau","doi":"10.1109/PESC.1996.548828","DOIUrl":"https://doi.org/10.1109/PESC.1996.548828","url":null,"abstract":"A new method to improve dynamic response of power factor preregulators (PFP) is developed in this paper. The method is based on the use of a very high efficiency post-regulator with two inputs instead of only one. This two-input post-regulator exhibits very high efficiency due to the fact that only a part of the total power undergoes a power conversion process. They need two-output PFPs at their inputs, which can easily be obtained in PFPs with transformers or with two PFPs working in parallel.","PeriodicalId":19979,"journal":{"name":"PESC Record. 27th Annual IEEE Power Electronics Specialists Conference","volume":"1 1","pages":"1818-1824 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1996-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90337231","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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