Pub Date : 1986-06-23DOI: 10.1109/PESC.1986.7415589
M. Rahman, J. Quaicoe, M. A. Choudhury
An improved PWM inverter waveform synthesis technique for harmonic control in delta modulation (DM) process is presented. Filtering approach is incorporated in the DM technique to reduce harmonics of lower frequencies and suppress the unwanted subharmonics. Analytical method is described to determine the performance of multistage delta modulated inverter and the results are substantiated by experimental verification.
{"title":"An optimum delta modulation strategy for inverter operation","authors":"M. Rahman, J. Quaicoe, M. A. Choudhury","doi":"10.1109/PESC.1986.7415589","DOIUrl":"https://doi.org/10.1109/PESC.1986.7415589","url":null,"abstract":"An improved PWM inverter waveform synthesis technique for harmonic control in delta modulation (DM) process is presented. Filtering approach is incorporated in the DM technique to reduce harmonics of lower frequencies and suppress the unwanted subharmonics. Analytical method is described to determine the performance of multistage delta modulated inverter and the results are substantiated by experimental verification.","PeriodicalId":164857,"journal":{"name":"1986 17th Annual IEEE Power Electronics Specialists Conference","volume":"271 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":"122067873","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.1986.7415564
M. Albach
In this article an analytical method for calculating the conducted interference voltages of the three basic ac-dc converters buck, boost and buck-boost with sinusoidal input current and unity power factor is presented. The analysis includes a simulation of the quasi-peak measurement according to CISPR (Comité International Spécial des Perturbations Radioélectriques). The influence of the different circuit parameters is investigated and the validity is confirmed by experimental results.
本文提出了一种计算输入电流为正弦、单位功率因数的三种基本交直流变换器降压、升压和降压-升压传导干扰电压的解析方法。分析包括根据CISPR (comit International spcicial des Perturbations radiosamitriques)对准峰值测量的模拟。研究了不同电路参数的影响，并通过实验验证了该方法的有效性。
{"title":"Conducted interference voltage of AC-DC converters","authors":"M. Albach","doi":"10.1109/PESC.1986.7415564","DOIUrl":"https://doi.org/10.1109/PESC.1986.7415564","url":null,"abstract":"In this article an analytical method for calculating the conducted interference voltages of the three basic ac-dc converters buck, boost and buck-boost with sinusoidal input current and unity power factor is presented. The analysis includes a simulation of the quasi-peak measurement according to CISPR (Comité International Spécial des Perturbations Radioélectriques). The influence of the different circuit parameters is investigated and the validity is confirmed by experimental results.","PeriodicalId":164857,"journal":{"name":"1986 17th Annual IEEE Power Electronics Specialists Conference","volume":"67 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":"114787076","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.1986.7415585
T. Zeng, Dan Chen, F. Lee
The concept of resonant switch has been extended to generate a family of new quasi-resonant converter topologies. The converter circuits feature zero-current switching and are particularly suited for high-frequency (MHz) power-conversion applications.
{"title":"Variations of quasi-resonant DC-DC converter topologies","authors":"T. Zeng, Dan Chen, F. Lee","doi":"10.1109/PESC.1986.7415585","DOIUrl":"https://doi.org/10.1109/PESC.1986.7415585","url":null,"abstract":"The concept of resonant switch has been extended to generate a family of new quasi-resonant converter topologies. The converter circuits feature zero-current switching and are particularly suited for high-frequency (MHz) power-conversion applications.","PeriodicalId":164857,"journal":{"name":"1986 17th Annual IEEE Power Electronics Specialists Conference","volume":"83 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":"132052603","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.1986.7415573
Kazunari Komatsugi, Teruo Imura
A new harmonic current compensator composed of a static power converter was developed. It is composed of two voltage-type inverters in a multiplex configuration, this new compensator has a number of features that make it superior to the conventional passive filter composed of an AC reactor and a capacitor. This paper describes the principle of harmonic current compensation, the capability which the converter is required to have as compensator, the compensator's features and a trial production equipment. The important factor which are essential to a compensator, such as main circuit configuration, components, control circuit, control technique, etc. were discussed. Also the test results of a compensation characteristic were presented. Excellent characteristics of the new harmonic current compensator were verified through an experiment.
{"title":"Harmonic current compensator composed of static power converter","authors":"Kazunari Komatsugi, Teruo Imura","doi":"10.1109/PESC.1986.7415573","DOIUrl":"https://doi.org/10.1109/PESC.1986.7415573","url":null,"abstract":"A new harmonic current compensator composed of a static power converter was developed. It is composed of two voltage-type inverters in a multiplex configuration, this new compensator has a number of features that make it superior to the conventional passive filter composed of an AC reactor and a capacitor. This paper describes the principle of harmonic current compensation, the capability which the converter is required to have as compensator, the compensator's features and a trial production equipment. The important factor which are essential to a compensator, such as main circuit configuration, components, control circuit, control technique, etc. were discussed. Also the test results of a compensation characteristic were presented. Excellent characteristics of the new harmonic current compensator were verified through an experiment.","PeriodicalId":164857,"journal":{"name":"1986 17th Annual IEEE Power Electronics Specialists Conference","volume":"17 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":"117033877","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.1986.7415551
K. Muraoka, Y. Kawamura, Y. Ohtsubo, S. Sugawara, T. Tamamushi, J. Nishizawa
Very low-loss, very high speed and snubber-circuitless performance of the newly fabricated high power 1200V–300A class of the static induction (SI) thyristor is introduced and it is applied to the 60kHz–100kW high efficiency (90%) inverter for induction heating.
{"title":"Characteristics of the high speed SI thyristor and its application as the 60kHz, 100kW and the efficiency of more than 90% inverter","authors":"K. Muraoka, Y. Kawamura, Y. Ohtsubo, S. Sugawara, T. Tamamushi, J. Nishizawa","doi":"10.1109/PESC.1986.7415551","DOIUrl":"https://doi.org/10.1109/PESC.1986.7415551","url":null,"abstract":"Very low-loss, very high speed and snubber-circuitless performance of the newly fabricated high power 1200V–300A class of the static induction (SI) thyristor is introduced and it is applied to the 60kHz–100kW high efficiency (90%) inverter for induction heating.","PeriodicalId":164857,"journal":{"name":"1986 17th Annual IEEE Power Electronics Specialists Conference","volume":"17 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":"123716144","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.1986.7415580
R. King, Randal L. Laubacher
A modified version of the series resonant DC/DC converter which provides low di/dt and increased turn-off time to its switches is analyzed. A simple dynamic simulation which uses little computer time and a steady-state solution are found. Experimental verification is provided.
{"title":"A modified series resonant DC/DC converter","authors":"R. King, Randal L. Laubacher","doi":"10.1109/PESC.1986.7415580","DOIUrl":"https://doi.org/10.1109/PESC.1986.7415580","url":null,"abstract":"A modified version of the series resonant DC/DC converter which provides low di/dt and increased turn-off time to its switches is analyzed. A simple dynamic simulation which uses little computer time and a steady-state solution are found. Experimental verification is provided.","PeriodicalId":164857,"journal":{"name":"1986 17th Annual IEEE Power Electronics Specialists Conference","volume":"23 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":"127291269","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.1986.7415549
R. Blanchard, Phillip E. Thibodeau
This paper examines the properties of a new power MOSFET operating as a depletion-mode device and used as a synchronous rectifier in a low-voltage, current-mode-control PWM switching regulator. The performance of this device is compared to both a Schottky diode and an enhancement-mode power MOSFET. A comparison of the efficiencies obtained for the three cases is presented.
{"title":"Use of depletion mode MOSFET devices in synchronous rectification","authors":"R. Blanchard, Phillip E. Thibodeau","doi":"10.1109/PESC.1986.7415549","DOIUrl":"https://doi.org/10.1109/PESC.1986.7415549","url":null,"abstract":"This paper examines the properties of a new power MOSFET operating as a depletion-mode device and used as a synchronous rectifier in a low-voltage, current-mode-control PWM switching regulator. The performance of this device is compared to both a Schottky diode and an enhancement-mode power MOSFET. A comparison of the efficiencies obtained for the three cases is presented.","PeriodicalId":164857,"journal":{"name":"1986 17th Annual IEEE Power Electronics Specialists Conference","volume":"56 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":"126915051","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.1986.7415574
M. Iravani
A novel scheme for four-quadrant thyristor-controlled static phase-shifters is presented. The technical feasibility of the proposed phase-shifter for damping power system torsional oscillations is examined. An optimization procedure is introduced to obtain the maximum damping for power system oscillations, by determining the optimum phase angle and magnitude of the phase-shifter out-put voltage. An eigenvalue analysis method is used to investigate the damping effect of the phase-shifter on the torsional phenonenon. The studies are performed on the first IEEE benchmark for SSR studies. The analytical results are verified by detailed digital computer simulation studies, using the BPA's Electromagnetic Transients Program (EMTP). The investigation results demonstrate the technical feasibility of the four-quadrant phase-shifter for damping the torsional oscillations, as a result of small signal disturbances.
{"title":"Thyristor-controlled phase-shifters for AC transmission","authors":"M. Iravani","doi":"10.1109/PESC.1986.7415574","DOIUrl":"https://doi.org/10.1109/PESC.1986.7415574","url":null,"abstract":"A novel scheme for four-quadrant thyristor-controlled static phase-shifters is presented. The technical feasibility of the proposed phase-shifter for damping power system torsional oscillations is examined. An optimization procedure is introduced to obtain the maximum damping for power system oscillations, by determining the optimum phase angle and magnitude of the phase-shifter out-put voltage. An eigenvalue analysis method is used to investigate the damping effect of the phase-shifter on the torsional phenonenon. The studies are performed on the first IEEE benchmark for SSR studies. The analytical results are verified by detailed digital computer simulation studies, using the BPA's Electromagnetic Transients Program (EMTP). The investigation results demonstrate the technical feasibility of the four-quadrant phase-shifter for damping the torsional oscillations, as a result of small signal disturbances.","PeriodicalId":164857,"journal":{"name":"1986 17th Annual IEEE Power Electronics Specialists Conference","volume":"78 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":"132727649","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.1986.7415591
M. Boost, P. Ziogas
With the introduction and wide acceptance of gate turn off power devices (e.g. Bipolars, Power Fets, GTO's, etc.), the switching behavior of converters has reached the point where further improvements in firing and switching networks bring only marginal benefits. Consequently, the research interests in the area of static converters have been shifting toward improving the process of power conversion through a combination of new circuit topologies and improved voltage and harmonic control PWM techniques. As a result several such techniques have been proposed lately.
{"title":"State of the art PWM techniques: A critical evaluation","authors":"M. Boost, P. Ziogas","doi":"10.1109/PESC.1986.7415591","DOIUrl":"https://doi.org/10.1109/PESC.1986.7415591","url":null,"abstract":"With the introduction and wide acceptance of gate turn off power devices (e.g. Bipolars, Power Fets, GTO's, etc.), the switching behavior of converters has reached the point where further improvements in firing and switching networks bring only marginal benefits. Consequently, the research interests in the area of static converters have been shifting toward improving the process of power conversion through a combination of new circuit topologies and improved voltage and harmonic control PWM techniques. As a result several such techniques have been proposed lately.","PeriodicalId":164857,"journal":{"name":"1986 17th Annual IEEE Power Electronics Specialists Conference","volume":"5 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":"132795972","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.1986.7415606
T. Szepesi
The paper presents four different methods to stabilize the operating frequency of hysteretic current mode DC/DC converters. It compares the merits of the different solutions. The effects of peak-current programming and operation in light mode are also investigated, and new circuits to achieve ideal properties are presented.
{"title":"Stabilizing the frequency QF hysteretic current mode DC/DC converters","authors":"T. Szepesi","doi":"10.1109/PESC.1986.7415606","DOIUrl":"https://doi.org/10.1109/PESC.1986.7415606","url":null,"abstract":"The paper presents four different methods to stabilize the operating frequency of hysteretic current mode DC/DC converters. It compares the merits of the different solutions. The effects of peak-current programming and operation in light mode are also investigated, and new circuits to achieve ideal properties are presented.","PeriodicalId":164857,"journal":{"name":"1986 17th Annual IEEE Power Electronics Specialists Conference","volume":"312 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":"133228373","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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