Pub Date : 1999-07-27DOI: 10.1109/PEDS.1999.794537
B. Lin, Hsin-Hung Lu
This paper presents a new PWM control scheme for a single-phase three-level PWM rectifier to improve the power quality. A diode bridge with two power switches is adopted as a PFC circuit to achieve a high power factor and low harmonic distortion. The control scheme is based on a look-up table with hysteresis current controller (HCC). Based on the proposed control scheme, the line current is driven to follow the sinusoidal current command which is in phase with the supply voltage. The software simulation and experimental results are shown to verify the proposed control scheme. It is shown that the measured line current harmonics and power factor satisfy the IEC 1000-3-2 requirements.
{"title":"Single-phase three-level PWM rectifier","authors":"B. Lin, Hsin-Hung Lu","doi":"10.1109/PEDS.1999.794537","DOIUrl":"https://doi.org/10.1109/PEDS.1999.794537","url":null,"abstract":"This paper presents a new PWM control scheme for a single-phase three-level PWM rectifier to improve the power quality. A diode bridge with two power switches is adopted as a PFC circuit to achieve a high power factor and low harmonic distortion. The control scheme is based on a look-up table with hysteresis current controller (HCC). Based on the proposed control scheme, the line current is driven to follow the sinusoidal current command which is in phase with the supply voltage. The software simulation and experimental results are shown to verify the proposed control scheme. It is shown that the measured line current harmonics and power factor satisfy the IEC 1000-3-2 requirements.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125815831","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 : 1999-07-27DOI: 10.1109/PEDS.1999.792760
E. Dede, J. Jordán, V. Esteve, J. Espí, S. Casan
Series and parallel resonant inverters are the common structures in high power industrial generators for induction heating applications. In practical working conditions, short-circuit of the heating coil is very common, normally producing overvoltages that can damage the power transistors of the inverter if no special precautions are taken. The aim of the paper is to show the mechanism of how overvoltages are generated under short-circuit conditions of the heating coil for series and parallel inverters.
{"title":"Series and parallel resonant inverters for induction heating under short-circuit conditions considering parasitic components","authors":"E. Dede, J. Jordán, V. Esteve, J. Espí, S. Casan","doi":"10.1109/PEDS.1999.792760","DOIUrl":"https://doi.org/10.1109/PEDS.1999.792760","url":null,"abstract":"Series and parallel resonant inverters are the common structures in high power industrial generators for induction heating applications. In practical working conditions, short-circuit of the heating coil is very common, normally producing overvoltages that can damage the power transistors of the inverter if no special precautions are taken. The aim of the paper is to show the mechanism of how overvoltages are generated under short-circuit conditions of the heating coil for series and parallel inverters.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117341528","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 : 1999-07-27DOI: 10.1109/PEDS.1999.794536
F.F. Perez-Guerrero, K. Venkatesan, Ray, Richard L. Patterson
Low-temperature operation of a closed loop three level buck DC-to-DC power converter with charge pump controller has been experimentally investigated. The power converter system has been designed and built with standard commercially available components. Performance characteristics such as efficiency and regulation are studied for different temperatures from 25/spl deg/C down to -184/spl deg/C. CMOSICs, MOSFET switches and ultrafast diodes prove to be suited to operate in a wide temperature range. The performance of the output filter inductor and capacitor does not change significantly at 77/spl deg/K compared to room temperature.
{"title":"Low temperature performance of a closed loop three level buck converter","authors":"F.F. Perez-Guerrero, K. Venkatesan, Ray, Richard L. Patterson","doi":"10.1109/PEDS.1999.794536","DOIUrl":"https://doi.org/10.1109/PEDS.1999.794536","url":null,"abstract":"Low-temperature operation of a closed loop three level buck DC-to-DC power converter with charge pump controller has been experimentally investigated. The power converter system has been designed and built with standard commercially available components. Performance characteristics such as efficiency and regulation are studied for different temperatures from 25/spl deg/C down to -184/spl deg/C. CMOSICs, MOSFET switches and ultrafast diodes prove to be suited to operate in a wide temperature range. The performance of the output filter inductor and capacitor does not change significantly at 77/spl deg/K compared to room temperature.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"21 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132496715","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 : 1999-07-27DOI: 10.1109/PEDS.1999.794560
F. Flinders, J. Zhang, W. Oghanna
The paper presents an experimental investigation on excessive brush and commutator wear in DC traction machines. An advanced computer measurement system is employed for data acquisition so that all measured data are recorded continuously in revenue raising services. The measured parameters include the mechanical vibration of the motor and its carbon brushes, a video camera image of sparking at the brush-commutator interface, transient currents of armature winding and carbon brushes. The paper reveals the relationship between harmonic currents and mechanical vibrations in DC traction motors. It concludes that the mechanical resonance of a motor at a certain locomotive speed is a major cause for the excessive brush and commutator wear.
{"title":"Investigation on excessive commutator and brush wears in DC traction machines","authors":"F. Flinders, J. Zhang, W. Oghanna","doi":"10.1109/PEDS.1999.794560","DOIUrl":"https://doi.org/10.1109/PEDS.1999.794560","url":null,"abstract":"The paper presents an experimental investigation on excessive brush and commutator wear in DC traction machines. An advanced computer measurement system is employed for data acquisition so that all measured data are recorded continuously in revenue raising services. The measured parameters include the mechanical vibration of the motor and its carbon brushes, a video camera image of sparking at the brush-commutator interface, transient currents of armature winding and carbon brushes. The paper reveals the relationship between harmonic currents and mechanical vibrations in DC traction motors. It concludes that the mechanical resonance of a motor at a certain locomotive speed is a major cause for the excessive brush and commutator wear.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131978756","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 : 1999-07-27DOI: 10.1109/PEDS.1999.794549
H. Tan, S. Ho
The torque output in a permanent magnet brushless DC motor (BLDCM) is usually controlled by regulating the motor phase currents. In this paper, three kinds of PWM strategies together with some critical review on traditional current measurements in a BLDCM drive system are discussed. A novel method for assessing the PWM information and measuring the motor phase currents by a DC link current sensor is also proposed. The attractive feature of this method is the simplicity with the current sample processing because there is no need to incorporate the conduction information of the power switches or diodes. Only the single sided PWM or the double sided complementary PWM is needed with the proposed technique.
{"title":"A novel single current sensor technique suitable for BLDCM drives","authors":"H. Tan, S. Ho","doi":"10.1109/PEDS.1999.794549","DOIUrl":"https://doi.org/10.1109/PEDS.1999.794549","url":null,"abstract":"The torque output in a permanent magnet brushless DC motor (BLDCM) is usually controlled by regulating the motor phase currents. In this paper, three kinds of PWM strategies together with some critical review on traditional current measurements in a BLDCM drive system are discussed. A novel method for assessing the PWM information and measuring the motor phase currents by a DC link current sensor is also proposed. The attractive feature of this method is the simplicity with the current sample processing because there is no need to incorporate the conduction information of the power switches or diodes. Only the single sided PWM or the double sided complementary PWM is needed with the proposed technique.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"430 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133852000","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 : 1999-07-27DOI: 10.1109/PEDS.1999.792660
P. Bhooplapur, B.P. Schmitt, G. Neeser
Universal in low voltage inverters and widely in use for a decade, the IGBT (insulated gate bipolar transistor) has proven its reliability in numerous applications. The one drawback is the limitation in output power achievable at these low voltages. Series connection of low voltage IGBTs to achieve higher output voltages is not an elegant and practical solution due to the problem of absolutely simultaneous switching necessary for safe operation. The recent introduction of HV-IGBTs (high-voltage IGBT) has finally made it possible to build the medium voltage drive up to 6.6 kV. HV IGBTs presently in use have a blocking voltage rating of 3300 V at 1200 A and devices of 6500 V at 600 A will be available in the near future. The standard three-level inverter output voltage of 2.3 kV can be realised with only one element whereas output voltages of 3.3 kV and 4.16 kV are realised with two elements in series. Some of the applications include rubber industry, ship propulsion, chemical and metals industries.
{"title":"HV-IGBT drives and their applications","authors":"P. Bhooplapur, B.P. Schmitt, G. Neeser","doi":"10.1109/PEDS.1999.792660","DOIUrl":"https://doi.org/10.1109/PEDS.1999.792660","url":null,"abstract":"Universal in low voltage inverters and widely in use for a decade, the IGBT (insulated gate bipolar transistor) has proven its reliability in numerous applications. The one drawback is the limitation in output power achievable at these low voltages. Series connection of low voltage IGBTs to achieve higher output voltages is not an elegant and practical solution due to the problem of absolutely simultaneous switching necessary for safe operation. The recent introduction of HV-IGBTs (high-voltage IGBT) has finally made it possible to build the medium voltage drive up to 6.6 kV. HV IGBTs presently in use have a blocking voltage rating of 3300 V at 1200 A and devices of 6500 V at 600 A will be available in the near future. The standard three-level inverter output voltage of 2.3 kV can be realised with only one element whereas output voltages of 3.3 kV and 4.16 kV are realised with two elements in series. Some of the applications include rubber industry, ship propulsion, chemical and metals industries.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124431785","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 : 1999-07-27DOI: 10.1109/PEDS.1999.792739
C.Y. Liu, J.G. Zhu, V. Ramsden
This paper proposes a push-pull voltage source inverter with lossless snubbers. The output voltage waveform of the inverter can be modulated as either square wave or SPWM. The energy stored in the leakage inductor of the transformer can be fed back to the DC supply through the snubber circuits when main switching devices change their states. Some higher harmonics might be added to the output voltage if the snubbers are not designed properly. The operational principles and experimental results on a prototype are presented.
{"title":"A push-pull voltage source inverter with lossless snubber circuits","authors":"C.Y. Liu, J.G. Zhu, V. Ramsden","doi":"10.1109/PEDS.1999.792739","DOIUrl":"https://doi.org/10.1109/PEDS.1999.792739","url":null,"abstract":"This paper proposes a push-pull voltage source inverter with lossless snubbers. The output voltage waveform of the inverter can be modulated as either square wave or SPWM. The energy stored in the leakage inductor of the transformer can be fed back to the DC supply through the snubber circuits when main switching devices change their states. Some higher harmonics might be added to the output voltage if the snubbers are not designed properly. The operational principles and experimental results on a prototype are presented.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123516578","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 : 1999-07-27DOI: 10.1109/PEDS.1999.794525
C. Chan
The paper reviews the electric vehicle development over the past 30 years and predicts the future development trends. The paper further summarizes the EV engineering philosophy for the success of EV development.
{"title":"The past, present and future of electric vehicle development","authors":"C. Chan","doi":"10.1109/PEDS.1999.794525","DOIUrl":"https://doi.org/10.1109/PEDS.1999.794525","url":null,"abstract":"The paper reviews the electric vehicle development over the past 30 years and predicts the future development trends. The paper further summarizes the EV engineering philosophy for the success of EV development.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"66 3-4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120918614","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 : 1999-07-27DOI: 10.1109/PEDS.1999.794572
C. Grantham, H. Tabatabaei-Yazdi
The paper describes the implementation of a rapid on line parameter determination method for three phase motors without the need to connect a mechanical load or drive to the machine's output shaft. The technique is based on data sampling during a normal run up to speed test. The method has been refined such that even the normal locked rotor and synchronous speed data are measured during the run up to speed test. Furthermore the technique takes into account rotor parameter variations with frequency due to skin effect (mainly due to double-cage or deep-bar rotor), and other nonlinear imperfections such as heating and main flux path saturation. Moreover the system can be used for condition monitoring of any electrical drive system and can be permanently or temporarily connected to such a system for diagnosis.
{"title":"Rapid parameter determination for use in the control of high performance induction motor drives","authors":"C. Grantham, H. Tabatabaei-Yazdi","doi":"10.1109/PEDS.1999.794572","DOIUrl":"https://doi.org/10.1109/PEDS.1999.794572","url":null,"abstract":"The paper describes the implementation of a rapid on line parameter determination method for three phase motors without the need to connect a mechanical load or drive to the machine's output shaft. The technique is based on data sampling during a normal run up to speed test. The method has been refined such that even the normal locked rotor and synchronous speed data are measured during the run up to speed test. Furthermore the technique takes into account rotor parameter variations with frequency due to skin effect (mainly due to double-cage or deep-bar rotor), and other nonlinear imperfections such as heating and main flux path saturation. Moreover the system can be used for condition monitoring of any electrical drive system and can be permanently or temporarily connected to such a system for diagnosis.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134541360","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 : 1999-07-27DOI: 10.1109/PEDS.1999.792664
S. Ho, Shiyou Yang, M. Rahman, H. Wong
This paper presents a method for an accurate computation of the dynamic behavior of PWM inverter-fed AC motor drives with voltage sources as excitations. The method is based on the 2D finite element method coupling with external circuit models, together with the simultaneous simulation of the motion of the rotor system. Attention is focused on the special issues, such as the best approach to take into account the motion between the stator and the rotor, the skin effect and the numerical oscillation which arises from the (high frequency) step changes of the output voltages of the inverter, when finite element analysis is used. In this paper the interpolating moving boundary is introduced when considering the relative motion between the stator and the rotor, and the numerical critical damping method is used to suppress the numerical oscillation which may occur in numerical simulations. The computed results of a PWM inverter-fed motor drive system is used to validate the proposed method.
{"title":"Transient analysis of PWM inverter-fed AC motor drives using finite element method coupling with external circuit model","authors":"S. Ho, Shiyou Yang, M. Rahman, H. Wong","doi":"10.1109/PEDS.1999.792664","DOIUrl":"https://doi.org/10.1109/PEDS.1999.792664","url":null,"abstract":"This paper presents a method for an accurate computation of the dynamic behavior of PWM inverter-fed AC motor drives with voltage sources as excitations. The method is based on the 2D finite element method coupling with external circuit models, together with the simultaneous simulation of the motion of the rotor system. Attention is focused on the special issues, such as the best approach to take into account the motion between the stator and the rotor, the skin effect and the numerical oscillation which arises from the (high frequency) step changes of the output voltages of the inverter, when finite element analysis is used. In this paper the interpolating moving boundary is introduced when considering the relative motion between the stator and the rotor, and the numerical critical damping method is used to suppress the numerical oscillation which may occur in numerical simulations. The computed results of a PWM inverter-fed motor drive system is used to validate the proposed method.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116474129","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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