Pub Date : 1999-07-27DOI: 10.1109/PEDS.1999.792832
L. Ping, Meng Yu, K. Yong, Z. Hui, Chen Jian
In this paper, the single-phase boost power factor correction converter is discussed in detail. With the Fourier series analysis of the general model, the low frequency model and high frequency model are proposed. From the low frequency model, the expression of the duty cycle, the boundary between continuous current mode (CCM) and discontinuous current mode (DCM), the study of the cusp distortion and the ripple output voltage are developed. While the high frequency components of the input current are described based on the high frequency model. Theoretical results are demonstrated by simulation and experiments.
{"title":"Analysis of single-phase boost power factor correction (PFC) converter","authors":"L. Ping, Meng Yu, K. Yong, Z. Hui, Chen Jian","doi":"10.1109/PEDS.1999.792832","DOIUrl":"https://doi.org/10.1109/PEDS.1999.792832","url":null,"abstract":"In this paper, the single-phase boost power factor correction converter is discussed in detail. With the Fourier series analysis of the general model, the low frequency model and high frequency model are proposed. From the low frequency model, the expression of the duty cycle, the boundary between continuous current mode (CCM) and discontinuous current mode (DCM), the study of the cusp distortion and the ripple output voltage are developed. While the high frequency components of the input current are described based on the high frequency model. Theoretical results are demonstrated by simulation and experiments.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"45 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":"115337705","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.1999.792850
B. Chaudhari, S. Wekhande, S. S. Dhamse, S. Dhambhare
Sine wave pulse width modulation is most widely used in three-phase motor drives, UPS systems, static VAr compensators, etc. Variable frequency sine wave outputs with high stability can be achieved with digital circuits employing EPROMs and DACs. The conventional schemes normally use three EPROMs and three DACs along-with a triangular waveform generator. For better performance, the sine wave should be synchronized with the triangular wave. The performance needs restrict the selection of the frequency ratio. Two schemes are presented in this paper which use only one EPROM to generate the necessary signals for the SPWM. The schemes generate carrier and reference signals using the same EPROM maintaining exact synchronization, keeping the frequency ratio as an odd multiple of three for the entire speed range and ensure that the modulating signal and carrier signal have opposite slopes at coincident zero crossing. The application of these schemes reduces the cost and space for the generation of PWM signals and thus help the growing FHP drive market where cost is of paramount importance to induce a change from fixed speed to variable speed operation.
{"title":"A low cost high performance SPWM inverter","authors":"B. Chaudhari, S. Wekhande, S. S. Dhamse, S. Dhambhare","doi":"10.1109/PEDS.1999.792850","DOIUrl":"https://doi.org/10.1109/PEDS.1999.792850","url":null,"abstract":"Sine wave pulse width modulation is most widely used in three-phase motor drives, UPS systems, static VAr compensators, etc. Variable frequency sine wave outputs with high stability can be achieved with digital circuits employing EPROMs and DACs. The conventional schemes normally use three EPROMs and three DACs along-with a triangular waveform generator. For better performance, the sine wave should be synchronized with the triangular wave. The performance needs restrict the selection of the frequency ratio. Two schemes are presented in this paper which use only one EPROM to generate the necessary signals for the SPWM. The schemes generate carrier and reference signals using the same EPROM maintaining exact synchronization, keeping the frequency ratio as an odd multiple of three for the entire speed range and ensure that the modulating signal and carrier signal have opposite slopes at coincident zero crossing. The application of these schemes reduces the cost and space for the generation of PWM signals and thus help the growing FHP drive market where cost is of paramount importance to induce a change from fixed speed to variable speed operation.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"8 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":"122658538","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.1999.794539
Y. Nishida
This paper presents a 12-pulse diode rectifier of capacitor input type consisting of the conventional three-phase bridge 6-pulse diode rectifier with an auxiliary circuit. Although the auxiliary circuit consists of an autotransformer with very low kVA and two auxiliary diodes with very low rating, it plays the role to increase operation pulse number to 12. As a result, harmonics of the input line currents are greatly reduced and the THD is reduced to a quarter of the conventional 6-pulse rectifier. Since the new rectifier does not consist of a self-turn-off device nor a controller, the proposed scheme results in a compact, reliable and efficient solution to obtain uncontrolled DC-voltage from the utility without harmonic pollution. In this paper, the unique arrangement and particular operation of the auxiliary circuit are introduced. Then, experimental results are shown to confirm the validity of the theory.
{"title":"A 12-pulse diode rectifier using 3-phase bridge 6-pulse diode rectifier with 2 additional diodes and an auto-transformer","authors":"Y. Nishida","doi":"10.1109/PEDS.1999.794539","DOIUrl":"https://doi.org/10.1109/PEDS.1999.794539","url":null,"abstract":"This paper presents a 12-pulse diode rectifier of capacitor input type consisting of the conventional three-phase bridge 6-pulse diode rectifier with an auxiliary circuit. Although the auxiliary circuit consists of an autotransformer with very low kVA and two auxiliary diodes with very low rating, it plays the role to increase operation pulse number to 12. As a result, harmonics of the input line currents are greatly reduced and the THD is reduced to a quarter of the conventional 6-pulse rectifier. Since the new rectifier does not consist of a self-turn-off device nor a controller, the proposed scheme results in a compact, reliable and efficient solution to obtain uncontrolled DC-voltage from the utility without harmonic pollution. In this paper, the unique arrangement and particular operation of the auxiliary circuit are introduced. Then, experimental results are shown to confirm the validity of the theory.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"13 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":"125561975","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.1999.794537
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.1999.792823
Duan Shanxu, Meng Yu, X. Jian, K. Yong, Chen Jian
The control technique of a parallel operation system of voltage source inverters with other inverters or with utility source has been applied in many fields, especially in uninterruptible power supply (UPS). The multi-module UPS can flexibly implement expansion of power system capacities. Furthermore, it can be used to build up a parallel redundant system in order to improve the reliability of whole power system operation. This paper analyses voltage and current status of a voltage source inverter in parallel, as well as the principle of parallel redundant system. Several control strategies according to the load-sharing problem in parallel control systems are also presented, from which the research of distributed-logic-control to realize parallel operation of four 3 kVA UPSs based on TMS320F240, a kind of real time digital signal processor (DSP), is discussed and proposed in detail.
{"title":"Parallel operation control technique of voltage source inverters in UPS","authors":"Duan Shanxu, Meng Yu, X. Jian, K. Yong, Chen Jian","doi":"10.1109/PEDS.1999.792823","DOIUrl":"https://doi.org/10.1109/PEDS.1999.792823","url":null,"abstract":"The control technique of a parallel operation system of voltage source inverters with other inverters or with utility source has been applied in many fields, especially in uninterruptible power supply (UPS). The multi-module UPS can flexibly implement expansion of power system capacities. Furthermore, it can be used to build up a parallel redundant system in order to improve the reliability of whole power system operation. This paper analyses voltage and current status of a voltage source inverter in parallel, as well as the principle of parallel redundant system. Several control strategies according to the load-sharing problem in parallel control systems are also presented, from which the research of distributed-logic-control to realize parallel operation of four 3 kVA UPSs based on TMS320F240, a kind of real time digital signal processor (DSP), is discussed and proposed in detail.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"47 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":"125765937","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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