Pub Date : 1995-03-05DOI: 10.1109/APEC.1995.469001
E. C. Yee, R. Sotăk
Total Quality Management is commonly understood to encompass concepts such as customer satisfaction, continuous improvement, management by fact or data, and employee involvement. While these concepts are easily understood, the implementation of these concepts in a product development organization is not as obvious. This paper will describe how AT&T Power Systems, Board Mounted Power Development Group has implemented Total Quality Management.<>
{"title":"Implementing Total Quality Management for world class product development","authors":"E. C. Yee, R. Sotăk","doi":"10.1109/APEC.1995.469001","DOIUrl":"https://doi.org/10.1109/APEC.1995.469001","url":null,"abstract":"Total Quality Management is commonly understood to encompass concepts such as customer satisfaction, continuous improvement, management by fact or data, and employee involvement. While these concepts are easily understood, the implementation of these concepts in a product development organization is not as obvious. This paper will describe how AT&T Power Systems, Board Mounted Power Development Group has implemented Total Quality Management.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"104 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":"132582769","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.1995.469093
S. Kataoka, K. Atagi
The authors describe IR (infrared ray) interference between IR remote-control systems for electric home appliances and high frequency electronic ballast lighting. The separation of the carrier frequency of an IR remote-control system and the lamp operating frequency of high frequency lighting is the most efficient way of preventing this interference. The phenomenon, preventive approaches and experimental results of IR interference experiments are also described.<>
{"title":"Prevention of IR interference from high frequency fluorescent lighting to IR remote-control systems","authors":"S. Kataoka, K. Atagi","doi":"10.1109/APEC.1995.469093","DOIUrl":"https://doi.org/10.1109/APEC.1995.469093","url":null,"abstract":"The authors describe IR (infrared ray) interference between IR remote-control systems for electric home appliances and high frequency electronic ballast lighting. The separation of the carrier frequency of an IR remote-control system and the lamp operating frequency of high frequency lighting is the most efficient way of preventing this interference. The phenomenon, preventive approaches and experimental results of IR interference experiments are also described.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"96 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":"131988909","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.1995.468963
Dongyan Zhou, A. Pietkiewicz, Slobodan Cuk
A novel three-switch HV converter derived from the Cuk converter is presented. This converter can operate into a capacitor-diode voltage multiplier, which offers simpler structure and control, higher efficiency, reduced EMI, size and weight savings than traditional switched-mode regulated voltage multipliers. Two significant advantages are the continuous input current and easy isolation extension. The new converter is experimentally verified. Both the steady state and dynamic theoretical models are correlated well with the experimental data.<>
{"title":"A three-switch high-voltage converter","authors":"Dongyan Zhou, A. Pietkiewicz, Slobodan Cuk","doi":"10.1109/APEC.1995.468963","DOIUrl":"https://doi.org/10.1109/APEC.1995.468963","url":null,"abstract":"A novel three-switch HV converter derived from the Cuk converter is presented. This converter can operate into a capacitor-diode voltage multiplier, which offers simpler structure and control, higher efficiency, reduced EMI, size and weight savings than traditional switched-mode regulated voltage multipliers. Two significant advantages are the continuous input current and easy isolation extension. The new converter is experimentally verified. Both the steady state and dynamic theoretical models are correlated well with the experimental data.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"124 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":"132295292","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.1995.469079
F. Blaabjerg, Sigurbur Freysson, H. Hansen, Suren Hansen
This paper presents a new space vector modulation strategy suitable for a low cost PWM-VSI inverter employing only four switches, four diodes and a split capacitor bank in the DC-link. The work is motivated by the need of an efficient and flexible modulation method, which is optimized with respect to minimum machine torque ripple. The modulation strategy is named Space Vector Modulation for Four Switch Inverter (SVMFSI) and is realized by planning the switching patterns between four active voltage vectors on the basis of a desired flux trajectory for the stator flux vector in the AC-machine (variable speed induction motor drive). The strategy is implemented in a single 8-bit microcontroller as a double sided modulation strategy. Simulations of the motor torque ripple are performed at a switching frequency of 4 kHz and indicate a torque ripple of 14% at nominal load. Finally, selected results are verified experimentally on a 1.5 kVA prototype B4 inverter. The test results indicate high quality output voltage spectra with no low-order voltage harmonics and a harmonic loss factor (HLF) of 1.12% at unity modulation index.<>
{"title":"A new optimized space vector modulation strategy for a component minimized voltage source inverter","authors":"F. Blaabjerg, Sigurbur Freysson, H. Hansen, Suren Hansen","doi":"10.1109/APEC.1995.469079","DOIUrl":"https://doi.org/10.1109/APEC.1995.469079","url":null,"abstract":"This paper presents a new space vector modulation strategy suitable for a low cost PWM-VSI inverter employing only four switches, four diodes and a split capacitor bank in the DC-link. The work is motivated by the need of an efficient and flexible modulation method, which is optimized with respect to minimum machine torque ripple. The modulation strategy is named Space Vector Modulation for Four Switch Inverter (SVMFSI) and is realized by planning the switching patterns between four active voltage vectors on the basis of a desired flux trajectory for the stator flux vector in the AC-machine (variable speed induction motor drive). The strategy is implemented in a single 8-bit microcontroller as a double sided modulation strategy. Simulations of the motor torque ripple are performed at a switching frequency of 4 kHz and indicate a torque ripple of 14% at nominal load. Finally, selected results are verified experimentally on a 1.5 kVA prototype B4 inverter. The test results indicate high quality output voltage spectra with no low-order voltage harmonics and a harmonic loss factor (HLF) of 1.12% at unity modulation index.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"47 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":"134065698","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.1995.469005
D.A. Williams
This paper analyzes and compares the linear range operation of several high speed optocouplers. These devices are evaluated by measuring current transfer ratio (CTR), gain and phase characteristics over varying input currents and ambient temperatures. The parameters are compared in graphical and tabular form, and conclusions are drawn. The optocouplers considered for the switched mode power supplies consist of LED in combination with photodiodes and phototransistors.<>
{"title":"Optocoupler selection for high frequency power supplies","authors":"D.A. Williams","doi":"10.1109/APEC.1995.469005","DOIUrl":"https://doi.org/10.1109/APEC.1995.469005","url":null,"abstract":"This paper analyzes and compares the linear range operation of several high speed optocouplers. These devices are evaluated by measuring current transfer ratio (CTR), gain and phase characteristics over varying input currents and ambient temperatures. The parameters are compared in graphical and tabular form, and conclusions are drawn. The optocouplers considered for the switched mode power supplies consist of LED in combination with photodiodes and phototransistors.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"4 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":"131745149","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.1995.469089
J. Rajagopalan, J.G. Cho, B. Cho, F. Lee
A simple high performance discrete time domain control method of single-phase power factor correction (PFC) circuits is presented to improve the dynamic performance of the output voltage control loop. By adding only a sample and hold (S/H) in the outer voltage loop, the output voltage can be sensed without the 120 Hz ripple and accordingly, a high bandwidth output voltage loop can be designed without any input current distortions. Analysis and design steps are detailed. Simulation results are presented to verify that the performance has improved over a conventional voltage loop control method.<>
{"title":"High performance control of single-phase power factor correction circuits using a discrete time domain control method","authors":"J. Rajagopalan, J.G. Cho, B. Cho, F. Lee","doi":"10.1109/APEC.1995.469089","DOIUrl":"https://doi.org/10.1109/APEC.1995.469089","url":null,"abstract":"A simple high performance discrete time domain control method of single-phase power factor correction (PFC) circuits is presented to improve the dynamic performance of the output voltage control loop. By adding only a sample and hold (S/H) in the outer voltage loop, the output voltage can be sensed without the 120 Hz ripple and accordingly, a high bandwidth output voltage loop can be designed without any input current distortions. Analysis and design steps are detailed. Simulation results are presented to verify that the performance has improved over a conventional voltage loop control method.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"14 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":"132501522","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.1995.468969
R.K. Williams, B. Mohandes, Chae-Han Lee
Implementation of a 1-MHz switchmode control IC for DC-to-DC conversion in single-cell lithium ion (3- to 4.2-V) applications using an ultra-fast CBiC/D technology is demonstrated. The combination of low-threshold CMOS and high-speed bipolars (3 GHz NPN, 800 MHz PNP) is used to realize a high-speed comparator, 25-MHz error amplifier, and low propagation output delay output buffer at low operating currents. A low-profile, small footprint synchronous Buck converter with excellent ripple and transients response illustrates the benefits of operation at high clock rates.<>
{"title":"High-frequency DC/DC converter for lithium-ion battery applications utilizes ultra-fast CBiC/D process technology","authors":"R.K. Williams, B. Mohandes, Chae-Han Lee","doi":"10.1109/APEC.1995.468969","DOIUrl":"https://doi.org/10.1109/APEC.1995.468969","url":null,"abstract":"Implementation of a 1-MHz switchmode control IC for DC-to-DC conversion in single-cell lithium ion (3- to 4.2-V) applications using an ultra-fast CBiC/D technology is demonstrated. The combination of low-threshold CMOS and high-speed bipolars (3 GHz NPN, 800 MHz PNP) is used to realize a high-speed comparator, 25-MHz error amplifier, and low propagation output delay output buffer at low operating currents. A low-profile, small footprint synchronous Buck converter with excellent ripple and transients response illustrates the benefits of operation at high clock rates.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"65 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":"132156379","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.1995.469077
M.D. Takach, P. Lauritzen
A survey of magnetic core material models is the first step in an effort to identify those suitable for power electronics applications. This paper classifies many of the existing magnetic material models and outlines some of their main features.<>
{"title":"Survey of magnetic core models","authors":"M.D. Takach, P. Lauritzen","doi":"10.1109/APEC.1995.469077","DOIUrl":"https://doi.org/10.1109/APEC.1995.469077","url":null,"abstract":"A survey of magnetic core material models is the first step in an effort to identify those suitable for power electronics applications. This paper classifies many of the existing magnetic material models and outlines some of their main features.<<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":"133432593","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.1995.468998
R. Berthiaume, H. Malec, J. P. Mantey
Benchmarking has become an established industrial service, and business practice. The benchmarking activity presented in this paper focused on determining the best-in-class and worst-in-class for the areas of performance, packaging, reliability, and cost for power modules from several vendors. Critical success factors mere developed for all areas such as normalized FITS/part, performance efficiency, and part lead-times to determine the preferred suppliers for power modules.<>
{"title":"Benchmarking DC-DC converters for world class performance","authors":"R. Berthiaume, H. Malec, J. P. Mantey","doi":"10.1109/APEC.1995.468998","DOIUrl":"https://doi.org/10.1109/APEC.1995.468998","url":null,"abstract":"Benchmarking has become an established industrial service, and business practice. The benchmarking activity presented in this paper focused on determining the best-in-class and worst-in-class for the areas of performance, packaging, reliability, and cost for power modules from several vendors. Critical success factors mere developed for all areas such as normalized FITS/part, performance efficiency, and part lead-times to determine the preferred suppliers for power modules.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"143 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":"117345324","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.1995.469045
F. Caricchi, F. Crescimbini, A. Di Napoli
In brushless DC motor drives devoted to electric vehicles (EVs) a bi-directional DC-DC power converter can be used to control suitably both motoring and regenerative braking operations in order to improve the motor drive performance. In consideration of such an application, this paper deals with the experimental study of a buck-boost bi-directional DC-DC power converter topology which has been conceived for the use in EVs propelled by means of wheel-direct-coupling axial-flux PM motor drives. The paper discusses the power converter modes of operation and reports experimental results taken from a 20 kW water-cooled prototype of the proposed power converter topology.<>
{"title":"20 kW water-cooled prototype of a buck-boost bidirectional DC-DC converter topology for electrical vehicle motor drives","authors":"F. Caricchi, F. Crescimbini, A. Di Napoli","doi":"10.1109/APEC.1995.469045","DOIUrl":"https://doi.org/10.1109/APEC.1995.469045","url":null,"abstract":"In brushless DC motor drives devoted to electric vehicles (EVs) a bi-directional DC-DC power converter can be used to control suitably both motoring and regenerative braking operations in order to improve the motor drive performance. In consideration of such an application, this paper deals with the experimental study of a buck-boost bi-directional DC-DC power converter topology which has been conceived for the use in EVs propelled by means of wheel-direct-coupling axial-flux PM motor drives. The paper discusses the power converter modes of operation and reports experimental results taken from a 20 kW water-cooled prototype of the proposed power converter topology.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"4 2 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":"123901108","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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