Pub Date : 1995-03-05DOI: 10.1109/APEC.1995.469018
Y. Chapuis, D. Roye, J. Davoine
The field oriented control of an induction motor is sensitive to machine parameters and some detuning is expected in most rotor flux oriented systems. Consequently, direct torque control has been introduced to reduce parameter sensitivity problems, which are negligible at high speed. The authors of this paper present principles and implementation, with a digital signal processor, of the control system. They propose solutions to correct integrators, which cause some drift and operation errors, and they estimate the possibilities of the proposal. They describe the methods used to obtain good performance, even in the low speed range, where the stator resistance influence becomes critical.<>
{"title":"Principles and implementation of direct torque control by stator flux orientation of an induction motor","authors":"Y. Chapuis, D. Roye, J. Davoine","doi":"10.1109/APEC.1995.469018","DOIUrl":"https://doi.org/10.1109/APEC.1995.469018","url":null,"abstract":"The field oriented control of an induction motor is sensitive to machine parameters and some detuning is expected in most rotor flux oriented systems. Consequently, direct torque control has been introduced to reduce parameter sensitivity problems, which are negligible at high speed. The authors of this paper present principles and implementation, with a digital signal processor, of the control system. They propose solutions to correct integrators, which cause some drift and operation errors, and they estimate the possibilities of the proposal. They describe the methods used to obtain good performance, even in the low speed range, where the stator resistance influence becomes critical.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"30 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":"127553208","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.1995.468995
M. Fujii, T. Suetsugu, H. Koizumi, K. Shinoda, S. Mori
Resonant DC/DC power converters have high-efficient power conversion at high operating frequency. However, most resonant DC/DC power converters need frequency control to regulate the output voltage. To alleviate the problem, the thinned-out method can regulate the output voltage at a fixed operating frequency by thinning-out some pulses of the switch voltage. Another advantage of thinned-out method is that it can operate with low noise and simple systems. The purpose of this paper is to propose the application of the thinned-out method to a conventional class E rectifier and improve the low output regulation. Some experimental results are shown as a class E/sup 2/ resonant DC/DC power converter. The measured efficiency /spl mu/ was maintained over 60 percent for varying the output voltage from 3.3 V to 2.3 V. The experimental results were in good agreement with the theoretical values.<>
{"title":"Resonant DC/DC converter with class E inverter and class E rectifier using thinned-out method","authors":"M. Fujii, T. Suetsugu, H. Koizumi, K. Shinoda, S. Mori","doi":"10.1109/APEC.1995.468995","DOIUrl":"https://doi.org/10.1109/APEC.1995.468995","url":null,"abstract":"Resonant DC/DC power converters have high-efficient power conversion at high operating frequency. However, most resonant DC/DC power converters need frequency control to regulate the output voltage. To alleviate the problem, the thinned-out method can regulate the output voltage at a fixed operating frequency by thinning-out some pulses of the switch voltage. Another advantage of thinned-out method is that it can operate with low noise and simple systems. The purpose of this paper is to propose the application of the thinned-out method to a conventional class E rectifier and improve the low output regulation. Some experimental results are shown as a class E/sup 2/ resonant DC/DC power converter. The measured efficiency /spl mu/ was maintained over 60 percent for varying the output voltage from 3.3 V to 2.3 V. The experimental results were in good agreement with the theoretical values.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"38 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":"120925978","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.1995.469011
F. Magnago, P. M. McEwan
Electro-thermal models for HBC fuses and power electronic (PE) switching devices, based on the SPICE simulator and device manufacturers conventional test data, are introduced. The simulations permit coordination of fuse-PE device protection, under sinusoidal and nonsinusoidal short-circuit fault conditions, based on computing PE device junction temperature. Simulations of conventional fuse short-circuit symmetrical AC faults are compared with results obtained from short-circuit tests. Results are also given for a three-phase half-wave rectifier as an example application of the methodology for nonsinusoidal circuits and faults.<>
{"title":"Computer modelling of HBC fuses and their co-ordination with power electronic devices for sinusoidal and non-sinusoidal short-circuit fault conditions","authors":"F. Magnago, P. M. McEwan","doi":"10.1109/APEC.1995.469011","DOIUrl":"https://doi.org/10.1109/APEC.1995.469011","url":null,"abstract":"Electro-thermal models for HBC fuses and power electronic (PE) switching devices, based on the SPICE simulator and device manufacturers conventional test data, are introduced. The simulations permit coordination of fuse-PE device protection, under sinusoidal and nonsinusoidal short-circuit fault conditions, based on computing PE device junction temperature. Simulations of conventional fuse short-circuit symmetrical AC faults are compared with results obtained from short-circuit tests. Results are also given for a three-phase half-wave rectifier as an example application of the methodology for nonsinusoidal circuits and faults.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"18 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":"115258329","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.1995.469016
V. Thottuvelil
Tolerance analysis of alarm and protection circuits is a key problem in achieving robust design of power supplies. This paper presents improved simulation methods for analyzing the effects of component tolerances in such circuits. Important component modeling considerations are also discussed.<>
{"title":"Accelerated tolerance analysis of power-supply protection circuits using simulation","authors":"V. Thottuvelil","doi":"10.1109/APEC.1995.469016","DOIUrl":"https://doi.org/10.1109/APEC.1995.469016","url":null,"abstract":"Tolerance analysis of alarm and protection circuits is a key problem in achieving robust design of power supplies. This paper presents improved simulation methods for analyzing the effects of component tolerances in such circuits. Important component modeling considerations are also discussed.<<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":"126761788","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.1995.468953
E. Bennett
Customers are only one link in the total process chain. There are powerful market place dynamics that cause customer behavior and expectations to change over time. The purpose of this paper is to describe the drivers that are changing the traditional business model so that power electronics providers can be pro-active in adapting to the market requirements of the future.<>
{"title":"Customer delight: mission impossible or mission imperative?","authors":"E. Bennett","doi":"10.1109/APEC.1995.468953","DOIUrl":"https://doi.org/10.1109/APEC.1995.468953","url":null,"abstract":"Customers are only one link in the total process chain. There are powerful market place dynamics that cause customer behavior and expectations to change over time. The purpose of this paper is to describe the drivers that are changing the traditional business model so that power electronics providers can be pro-active in adapting to the market requirements of the future.<<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":"116782357","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.1995.469081
A. von Jouanne, P. Enjeti, W. Gray
Advances in power electronic technology have improved the performance and output waveforms of PWM voltage source inverters and have made them the popular choice for many general purpose variable speed induction motor drives in energy saving applications. Switching frequencies of 10 to 20 kHz with 0.1 /spl mu/s rise times are common with the current insulated gate bipolar transistor (IGBT) technology. In many industrial applications the PWM inverter and the motor must be at separate locations, thus requiring long motor leads. This paper examines the effect of long motor leads on high frequency PWM inverter fed AC motor drives. Cable transmission theory and cable capacitance analysis are presented and voltage reflections are investigated. A flexible computer model is developed and the analysis is confirmed by simulations and verified by experimental results from case studies.<>
{"title":"The effect of long motor leads on PWM inverter fed AC motor drive systems","authors":"A. von Jouanne, P. Enjeti, W. Gray","doi":"10.1109/APEC.1995.469081","DOIUrl":"https://doi.org/10.1109/APEC.1995.469081","url":null,"abstract":"Advances in power electronic technology have improved the performance and output waveforms of PWM voltage source inverters and have made them the popular choice for many general purpose variable speed induction motor drives in energy saving applications. Switching frequencies of 10 to 20 kHz with 0.1 /spl mu/s rise times are common with the current insulated gate bipolar transistor (IGBT) technology. In many industrial applications the PWM inverter and the motor must be at separate locations, thus requiring long motor leads. This paper examines the effect of long motor leads on high frequency PWM inverter fed AC motor drives. Cable transmission theory and cable capacitance analysis are presented and voltage reflections are investigated. A flexible computer model is developed and the analysis is confirmed by simulations and verified by experimental results from case studies.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"1 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":"115396091","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.1995.469025
M. Mankikar
This paper tracks the history of the merchant power supply industry over a span of ten years-from 1984 to 1993-to show that business of power supplies has grown significantly and changed profoundly. Over these years, the merchant market has grown because of the changing nature of equipment market and companies who make them. The growth has been primarily in custom AC/DC switchers and standard DC/DC power converters. The changes have occurred at the company levels in the product development and marketing approaches. The distinction between various companies based on different products has diminished and integration of products and markets have taken place. Most companies make many products for wide markets. To add to this confusing complexity, the power supply industry offers many paradoxes, so what appears on the surface does not necessarily occur in the products and market. In this environment, merchant industry is evolving to be opportunistic.<>
{"title":"New opportunistic marketing strategy in a changed, complex and paradoxical power supply environment","authors":"M. Mankikar","doi":"10.1109/APEC.1995.469025","DOIUrl":"https://doi.org/10.1109/APEC.1995.469025","url":null,"abstract":"This paper tracks the history of the merchant power supply industry over a span of ten years-from 1984 to 1993-to show that business of power supplies has grown significantly and changed profoundly. Over these years, the merchant market has grown because of the changing nature of equipment market and companies who make them. The growth has been primarily in custom AC/DC switchers and standard DC/DC power converters. The changes have occurred at the company levels in the product development and marketing approaches. The distinction between various companies based on different products has diminished and integration of products and markets have taken place. Most companies make many products for wide markets. To add to this confusing complexity, the power supply industry offers many paradoxes, so what appears on the surface does not necessarily occur in the products and market. In this environment, merchant industry is evolving to be opportunistic.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"37 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":"129892082","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.1995.469042
Longchun Chen, F. Blaabjerg
In this paper, a current-controlled three-phase PWM AC/DC power converter is described. The current control is based on the predictive and the space vector PWM scheme. The phase shift caused by the predictive current control is compensated adaptatively so that the predictive-controlled PWM AC/DC power converter can maintain its performance with unity power factor and fixed switching frequency at low sampling frequency. The control system is implemented by an 8-bit microcontroller. By using the space vector control, low ripples in the current and the voltage as well as fast dynamic responses are achieved with a small DC link capacitance employed.<>
{"title":"A three-phase predictive PWM AC/DC converter with phase compensation and space vector control","authors":"Longchun Chen, F. Blaabjerg","doi":"10.1109/APEC.1995.469042","DOIUrl":"https://doi.org/10.1109/APEC.1995.469042","url":null,"abstract":"In this paper, a current-controlled three-phase PWM AC/DC power converter is described. The current control is based on the predictive and the space vector PWM scheme. The phase shift caused by the predictive current control is compensated adaptatively so that the predictive-controlled PWM AC/DC power converter can maintain its performance with unity power factor and fixed switching frequency at low sampling frequency. The control system is implemented by an 8-bit microcontroller. By using the space vector control, low ripples in the current and the voltage as well as fast dynamic responses are achieved with a small DC link capacitance employed.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"46 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":"116436651","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.1995.469084
G. Rim, Yuri Kang, Won-Ho Kim, Jong-Soo Kim
Various nonlinear loads such as diode rectifiers and phase controlled power converters connected to an AC source cause harmonic pollution in the AC mains. Recently some active filters have been proposed to minimize these potential problems. This study describes a method to improve the performance of a voltage source active filter. Two feedback loops are used in the scheme; one for reactive power compensation and the other for harmonic elimination.<>
{"title":"Performance improvement of a voltage source active filter","authors":"G. Rim, Yuri Kang, Won-Ho Kim, Jong-Soo Kim","doi":"10.1109/APEC.1995.469084","DOIUrl":"https://doi.org/10.1109/APEC.1995.469084","url":null,"abstract":"Various nonlinear loads such as diode rectifiers and phase controlled power converters connected to an AC source cause harmonic pollution in the AC mains. Recently some active filters have been proposed to minimize these potential problems. This study describes a method to improve the performance of a voltage source active filter. Two feedback loops are used in the scheme; one for reactive power compensation and the other for harmonic elimination.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"16 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":"126807639","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.1995.469082
B. Wiley, R. Hudson, R. Spée
A common motor drive configuration is the field-oriented controller with a pulse-width-modulated inverter. The controller has a digital processor and analog current regulator. Common forms of the current regulator have both steady state errors which degrade the field orientation and a suboptimal modulation scheme which produces excessive losses in the inverter. These deficiencies may be improved by digital processing.<>
{"title":"Digital enhancement of analog current regulators for three phase motor drives","authors":"B. Wiley, R. Hudson, R. Spée","doi":"10.1109/APEC.1995.469082","DOIUrl":"https://doi.org/10.1109/APEC.1995.469082","url":null,"abstract":"A common motor drive configuration is the field-oriented controller with a pulse-width-modulated inverter. The controller has a digital processor and analog current regulator. Common forms of the current regulator have both steady state errors which degrade the field orientation and a suboptimal modulation scheme which produces excessive losses in the inverter. These deficiencies may be improved by digital processing.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"43 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":"133921244","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：