Pub Date : 1995-03-05DOI: 10.1109/APEC.1995.468954
D.T. Staffiere
This paper is intended to summarize an Ad Hoc workshop held in Orlando, Florida on February 12, 1994. The subject of the workshop was "Power Conversion Technology in the Year 2000". The object of the workshop was for a group of knowledgeable individuals to project trends and needs for commercial power products (computing, communications, and general electronics). The areas of power that were discussed fell into three categories: AC-DC converters up to 500 watts; DC-DC converters 50 to 300 watts; and portable DC-DC converters 10 to 25 watts. These categories were chosen because they are expected to be high volume power systems, and the areas that are projected to grow significantly in the years upto 2000.<>
{"title":"Power in the year 2000","authors":"D.T. Staffiere","doi":"10.1109/APEC.1995.468954","DOIUrl":"https://doi.org/10.1109/APEC.1995.468954","url":null,"abstract":"This paper is intended to summarize an Ad Hoc workshop held in Orlando, Florida on February 12, 1994. The subject of the workshop was \"Power Conversion Technology in the Year 2000\". The object of the workshop was for a group of knowledgeable individuals to project trends and needs for commercial power products (computing, communications, and general electronics). The areas of power that were discussed fell into three categories: AC-DC converters up to 500 watts; DC-DC converters 50 to 300 watts; and portable DC-DC converters 10 to 25 watts. These categories were chosen because they are expected to be high volume power systems, and the areas that are projected to grow significantly in the years upto 2000.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117112423","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 : 1995-03-05DOI: 10.1109/APEC.1995.469002
D.T. Staffiere
A new facet to product design is emerging, called design for end-of-life. Design for end-of-life is the consideration during the design process for the cost effective disposition of a product when it is no longer needed or wanted. We are familiar with DFM (design for manufacturing) and DFA (design for assembly), but these activities, if not done properly, can be in conflict with design for end-of-life. The author briefly discusses the incentive for recycling of materials, and then briefly discusses ways to minimise end-of-life costs including: design for disassembly, material selection, and material identification.<>
{"title":"Designing product for the environment","authors":"D.T. Staffiere","doi":"10.1109/APEC.1995.469002","DOIUrl":"https://doi.org/10.1109/APEC.1995.469002","url":null,"abstract":"A new facet to product design is emerging, called design for end-of-life. Design for end-of-life is the consideration during the design process for the cost effective disposition of a product when it is no longer needed or wanted. We are familiar with DFM (design for manufacturing) and DFA (design for assembly), but these activities, if not done properly, can be in conflict with design for end-of-life. The author briefly discusses the incentive for recycling of materials, and then briefly discusses ways to minimise end-of-life costs including: design for disassembly, material selection, and material identification.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124834520","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 : 1995-03-05DOI: 10.1109/APEC.1995.469092
E. Deng, Slobodan Cuk
Unity power factor, single active switch AC-to-AC power converter topologies based on proper integrations of automatic current shapers and single switch inverters such as Class E power converters are presented, which are suitable for lamp ballast applications. Descriptions of desirable mode of operations and the first order analysis are given. The proposed ballasts have the following salient features: unity input power factor and low crest factor lamp current; single active switch reducing circuit complexity; and lossless switching, all of which are verified by experimental results.<>
{"title":"Single switch, unity power factor, lamp ballasts","authors":"E. Deng, Slobodan Cuk","doi":"10.1109/APEC.1995.469092","DOIUrl":"https://doi.org/10.1109/APEC.1995.469092","url":null,"abstract":"Unity power factor, single active switch AC-to-AC power converter topologies based on proper integrations of automatic current shapers and single switch inverters such as Class E power converters are presented, which are suitable for lamp ballast applications. Descriptions of desirable mode of operations and the first order analysis are given. The proposed ballasts have the following salient features: unity input power factor and low crest factor lamp current; single active switch reducing circuit complexity; and lossless switching, all of which are verified by experimental results.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124913046","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 : 1995-03-05DOI: 10.1109/APEC.1995.469083
M. Rastogi, N. Mohan, A. Edris
A novel hybrid-active filter topology to minimize electric utility current harmonics at high power levels is presented in this paper. The proposed topology combines both passive and active filters to obtain the lowest power converter VA rating as compared to the power converter rating in the active filter and the series-active hybrid filter configurations. This is demonstrated with experimental results from a laboratory model. Transient and steady state operation of the hybrid-active filter is also presented. The control of the proposed filter is extended to provide damping of resonances due to neighboring loads. Simulation results showing the effect of active damping are presented.<>
{"title":"Filtering of harmonic currents and damping of resonances in power systems with a hybrid-active filter","authors":"M. Rastogi, N. Mohan, A. Edris","doi":"10.1109/APEC.1995.469083","DOIUrl":"https://doi.org/10.1109/APEC.1995.469083","url":null,"abstract":"A novel hybrid-active filter topology to minimize electric utility current harmonics at high power levels is presented in this paper. The proposed topology combines both passive and active filters to obtain the lowest power converter VA rating as compared to the power converter rating in the active filter and the series-active hybrid filter configurations. This is demonstrated with experimental results from a laboratory model. Transient and steady state operation of the hybrid-active filter is also presented. The control of the proposed filter is extended to provide damping of resonances due to neighboring loads. Simulation results showing the effect of active damping are presented.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"334 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123775060","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 : 1995-03-05DOI: 10.1109/APEC.1995.469052
P. M. McEwan, S. B. Tennakoon
Conventional thyristor circuit breaker (TCB) devices absorb virtually all the inductive energy stored in circuits during short-circuit current interruption in a single switching operation. A novel TCB device, involving two switching stages, which produces significantly lower switching overvoltage, is presented and analysed. Results of tests taken on a low voltage model and high power prototype and design criteria are examined and discussed together with cost comparisons and applications.<>
{"title":"A two-stage DC thyristor circuit breaker","authors":"P. M. McEwan, S. B. Tennakoon","doi":"10.1109/APEC.1995.469052","DOIUrl":"https://doi.org/10.1109/APEC.1995.469052","url":null,"abstract":"Conventional thyristor circuit breaker (TCB) devices absorb virtually all the inductive energy stored in circuits during short-circuit current interruption in a single switching operation. A novel TCB device, involving two switching stages, which produces significantly lower switching overvoltage, is presented and analysed. Results of tests taken on a low voltage model and high power prototype and design criteria are examined and discussed together with cost comparisons and applications.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"149 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122133677","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 : 1995-03-05DOI: 10.1109/APEC.1995.469036
A. Jaafari, G. Joós
Modern power converter topologies and components allow the implementation of compact, low weight, low cost specialized power supplies. This paper presents such a power supply specifically designed for soil resistivity measurements in hydrogeology and mineral prospecting. The 3 kW power supply features a series resonant power converter topology, based on IGBTs, and an innovative reed relay based output inverter for the high voltage (300 V), low frequency (variable from 0.1 to 1 Hz), output stage. Full galvanic isolation is provided. This original approach to the power supply design results in a low cost, low weight (less than 10 kg), competitive product. The paper presents detailed design considerations and complete performance results for the chosen design.<>
{"title":"A compact high voltage low frequency power supply","authors":"A. Jaafari, G. Joós","doi":"10.1109/APEC.1995.469036","DOIUrl":"https://doi.org/10.1109/APEC.1995.469036","url":null,"abstract":"Modern power converter topologies and components allow the implementation of compact, low weight, low cost specialized power supplies. This paper presents such a power supply specifically designed for soil resistivity measurements in hydrogeology and mineral prospecting. The 3 kW power supply features a series resonant power converter topology, based on IGBTs, and an innovative reed relay based output inverter for the high voltage (300 V), low frequency (variable from 0.1 to 1 Hz), output stage. Full galvanic isolation is provided. This original approach to the power supply design results in a low cost, low weight (less than 10 kg), competitive product. The paper presents detailed design considerations and complete performance results for the chosen design.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128420614","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 : 1995-03-05DOI: 10.1109/APEC.1995.469040
E. Ismail, C. Oliveira, R. Erickson
A new three-phase high quality boost rectifier system is introduced in this paper. The single switch and the input diode bridge in this rectifier operates with zero current switching while the DC-side diode operates with zero voltage switching. The semiconductor stresses are constant and are independent of load current variations. A multi-resonant scheme is used to achieve this property. Line current waveforms of low harmonic content are obtained naturally by these rectifiers. Simulation and experimental results are supplied to confirm the validity of the proposed concept.<>
{"title":"A low-distortion three-phase multi-resonant boost rectifier with zero current switching","authors":"E. Ismail, C. Oliveira, R. Erickson","doi":"10.1109/APEC.1995.469040","DOIUrl":"https://doi.org/10.1109/APEC.1995.469040","url":null,"abstract":"A new three-phase high quality boost rectifier system is introduced in this paper. The single switch and the input diode bridge in this rectifier operates with zero current switching while the DC-side diode operates with zero voltage switching. The semiconductor stresses are constant and are independent of load current variations. A multi-resonant scheme is used to achieve this property. Line current waveforms of low harmonic content are obtained naturally by these rectifiers. Simulation and experimental results are supplied to confirm the validity of the proposed concept.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128570143","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 : 1995-03-05DOI: 10.1109/APEC.1995.468997
H. Wei, A. Ioinovici
A new type of DC-DC power converter, which achieves soft-switching for all the active and passive switches, is presented. Its basic structure is that of a quasi-resonant power converter, with an additional two active switches and four diodes. The resonant capacitors are not discrete elements, the parasitic capacitances of the MOSFETs play the role of resonant capacitors. All switches are subjected to voltage and current stresses at the same level as those in their PWM hard-switching counterparts. The power converter exhibits high efficiency and large regulation capability, based on a duty-cycle control. The soft-switching condition is maintained for a wide line range and load range.<>
{"title":"DC-DC zero-voltage-transition converter with PWM control and low stresses on switches","authors":"H. Wei, A. Ioinovici","doi":"10.1109/APEC.1995.468997","DOIUrl":"https://doi.org/10.1109/APEC.1995.468997","url":null,"abstract":"A new type of DC-DC power converter, which achieves soft-switching for all the active and passive switches, is presented. Its basic structure is that of a quasi-resonant power converter, with an additional two active switches and four diodes. The resonant capacitors are not discrete elements, the parasitic capacitances of the MOSFETs play the role of resonant capacitors. All switches are subjected to voltage and current stresses at the same level as those in their PWM hard-switching counterparts. The power converter exhibits high efficiency and large regulation capability, based on a duty-cycle control. The soft-switching condition is maintained for a wide line range and load range.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"172 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129435416","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 : 1995-03-05DOI: 10.1109/APEC.1995.469054
J. Walker
Most present switching mode amplifiers are based on the bridge (buck) power converter. A limitation of the the bridge topology is that the output must be a lower voltage than the input. Applications requiring a higher output voltage have previously used a separate DC/DC power converter preceding the switching mode amplifier. A switching mode amplifier based on the flyback topology has been developed that provides four quadrant operation and a range of output voltage greater than the input.<>
{"title":"Four quadrant amplifier based on the flyback topology","authors":"J. Walker","doi":"10.1109/APEC.1995.469054","DOIUrl":"https://doi.org/10.1109/APEC.1995.469054","url":null,"abstract":"Most present switching mode amplifiers are based on the bridge (buck) power converter. A limitation of the the bridge topology is that the output must be a lower voltage than the input. Applications requiring a higher output voltage have previously used a separate DC/DC power converter preceding the switching mode amplifier. A switching mode amplifier based on the flyback topology has been developed that provides four quadrant operation and a range of output voltage greater than the input.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"239 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124293023","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 : 1995-03-05DOI: 10.1109/APEC.1995.469106
R.K. Williams, R. Blattner, B. Mohandes
This paper describes the trade-offs among conduction, gate drive, output capacitance, and crossover losses for complementary power DMOSFETs used in switchmode DC-to-DC converters. These are evaluated as a function of normalized die size and 11 technology related parameters. DMOSFET size optimization for a 1-MHz complementary synchronous buck converter (V/sub out/=2.7 V) and boost converter (V/sub out/=6 V) is detailed for single-cell lithium ion battery applications in the 100 mA to 1 A range of load current.<>
{"title":"Optimization of complementary power DMOSFETs for low-voltage high-frequency DC-DC conversion","authors":"R.K. Williams, R. Blattner, B. Mohandes","doi":"10.1109/APEC.1995.469106","DOIUrl":"https://doi.org/10.1109/APEC.1995.469106","url":null,"abstract":"This paper describes the trade-offs among conduction, gate drive, output capacitance, and crossover losses for complementary power DMOSFETs used in switchmode DC-to-DC converters. These are evaluated as a function of normalized die size and 11 technology related parameters. DMOSFET size optimization for a 1-MHz complementary synchronous buck converter (V/sub out/=2.7 V) and boost converter (V/sub out/=6 V) is detailed for single-cell lithium ion battery applications in the 100 mA to 1 A range of load current.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124344937","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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