Pub Date : 1999-07-27DOI: 10.1109/PEDS.1999.794569
Junyang Luo, Y.C. Liang, B. Cho
Monolithic integration of lateral insulated gate bipolar transistor (LIGBT) in power integrated circuits is a current research topic. The overcurrent protection scheme is usually necessary to be built as part of the functions in power integrated circuits. The protection circuit requires to distinguish various fault conditions and to react differently based on the device safe operating area (SOA) limitation. At the same time, the circuit should also be relatively concise and suitable for integration. In this paper, a concise gate drive protection circuit is proposed to provide the complete function of overcurrent protection for LIGBT. The performance of the circuit was verified with experimental results. The implementation of the proposed circuit on lateral IGBT is also discussed and the simulation results are presented.
{"title":"Design of lateral IGBT protection circuit for smart power integration","authors":"Junyang Luo, Y.C. Liang, B. Cho","doi":"10.1109/PEDS.1999.794569","DOIUrl":"https://doi.org/10.1109/PEDS.1999.794569","url":null,"abstract":"Monolithic integration of lateral insulated gate bipolar transistor (LIGBT) in power integrated circuits is a current research topic. The overcurrent protection scheme is usually necessary to be built as part of the functions in power integrated circuits. The protection circuit requires to distinguish various fault conditions and to react differently based on the device safe operating area (SOA) limitation. At the same time, the circuit should also be relatively concise and suitable for integration. In this paper, a concise gate drive protection circuit is proposed to provide the complete function of overcurrent protection for LIGBT. The performance of the circuit was verified with experimental results. The implementation of the proposed circuit on lateral IGBT is also discussed and the simulation results 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":"84 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":"127249531","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 : 1999-05-18DOI: 10.1109/PEDS.1999.794575
K. Tachino, K. Amei, T. Maeda, M. Sakui
This paper presents characteristics of a two-phase levitated linear induction motor (LIM). LIMs are used in many industries as a transportation system. In a semiconductor factory, to produce dust during conveyance is not allowed. We developed the linear induction motor, used at such a factory. This system is AC induction type, and its secondary conductor completely levitates and moves above a stator by noncontact. In this paper, we propose a secondary conductor using the self-shading effect for stability levitation. The validity of the proposed method is demonstrated by comparing the calculated results of finite element method with experiments.
{"title":"Characteristics of two-phase levitated linear induction motor","authors":"K. Tachino, K. Amei, T. Maeda, M. Sakui","doi":"10.1109/PEDS.1999.794575","DOIUrl":"https://doi.org/10.1109/PEDS.1999.794575","url":null,"abstract":"This paper presents characteristics of a two-phase levitated linear induction motor (LIM). LIMs are used in many industries as a transportation system. In a semiconductor factory, to produce dust during conveyance is not allowed. We developed the linear induction motor, used at such a factory. This system is AC induction type, and its secondary conductor completely levitates and moves above a stator by noncontact. In this paper, we propose a secondary conductor using the self-shading effect for stability levitation. The validity of the proposed method is demonstrated by comparing the calculated results of finite element method with experiments.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129461106","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 : 1993-09-08DOI: 10.1109/PEDS.1999.792650
C. Grantham, H. Tabatabaei-Yazdi
This paper describes a novel method for rapid full load efficiency evaluation of three phase induction motors using a synthetic loading technique, without the need to connect a load to the machine's drive shaft. The new method uses a digital signal processor (DSP) controlled high switching frequency power electronic inverter to synthetically load the induction machine, while using a new real-time data acquisition system to accurately determine and record the machine's performance. The method proposed considerably reduces the testing time compared with conventional methods of efficiency measurement and the accuracy of the result is maintained. Moreover the use of the power electronic inverter allows a comprehensive control over all the quantities which determine the rate at which the power is dissipated inside the induction machine. This method can also directly quantify rotational losses of the induction motor under test.
{"title":"A novel machineless dynamometer for load testing three-phase induction motors","authors":"C. Grantham, H. Tabatabaei-Yazdi","doi":"10.1109/PEDS.1999.792650","DOIUrl":"https://doi.org/10.1109/PEDS.1999.792650","url":null,"abstract":"This paper describes a novel method for rapid full load efficiency evaluation of three phase induction motors using a synthetic loading technique, without the need to connect a load to the machine's drive shaft. The new method uses a digital signal processor (DSP) controlled high switching frequency power electronic inverter to synthetically load the induction machine, while using a new real-time data acquisition system to accurately determine and record the machine's performance. The method proposed considerably reduces the testing time compared with conventional methods of efficiency measurement and the accuracy of the result is maintained. Moreover the use of the power electronic inverter allows a comprehensive control over all the quantities which determine the rate at which the power is dissipated inside the induction machine. This method can also directly quantify rotational losses of the induction motor under test.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132448364","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 : 1900-01-01DOI: 10.1109/PEDS.1999.792781
Makoto Gotou, Masaaki Ochi
A new drive system of a DC permanent magnet brushless motor is developed. The developed drive system has a unique configuration which produces smooth three-phase currents by a simple PWM operation of only low-side power amplifiers, thereby reducing power consumption and motor vibration simultaneously. The developed drive system has many advantages; (1) low power consumption (e.g. it consumes only 40% of the power of a conventional linear drive system); (2) small vibration (e.g. the vibration level of it is made less by 12 dB than that of a conventional 120/spl deg/ PWM drive system); and (3) simple configuration. The paper describes the configuration and the experimental results of the developed drive system, which verify the above advantages.
{"title":"A new drive system of a brushless motor reducing power consumption and motor vibration simultaneously","authors":"Makoto Gotou, Masaaki Ochi","doi":"10.1109/PEDS.1999.792781","DOIUrl":"https://doi.org/10.1109/PEDS.1999.792781","url":null,"abstract":"A new drive system of a DC permanent magnet brushless motor is developed. The developed drive system has a unique configuration which produces smooth three-phase currents by a simple PWM operation of only low-side power amplifiers, thereby reducing power consumption and motor vibration simultaneously. The developed drive system has many advantages; (1) low power consumption (e.g. it consumes only 40% of the power of a conventional linear drive system); (2) small vibration (e.g. the vibration level of it is made less by 12 dB than that of a conventional 120/spl deg/ PWM drive system); and (3) simple configuration. The paper describes the configuration and the experimental results of the developed drive system, which verify the above advantages.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121132824","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 : 1900-01-01DOI: 10.1109/PEDS.1999.792830
S. Luo, Huai Wei, G. Zhu, I. Batarseh
High DC bus voltage stress is an important issue for the single stage PFC converters in practical application. This paper analyzes the inherent reason of the high bus voltage stress of single-stage power-factor-correction (PFC) AC/DC converters. Four possible resolving schemes are analyzed and discussed, and some of practical implementation circuits topologies are also given. Theoretical analysis and simulation results show that the both series-charging, parallel-discharging capacitors (SCPDC) scheme and bus-voltage-feedback (BVF) method are deemed to be more viable than the other two methods.
{"title":"Several schemes of alleviating bus voltage stress in single stage power factor correction converters","authors":"S. Luo, Huai Wei, G. Zhu, I. Batarseh","doi":"10.1109/PEDS.1999.792830","DOIUrl":"https://doi.org/10.1109/PEDS.1999.792830","url":null,"abstract":"High DC bus voltage stress is an important issue for the single stage PFC converters in practical application. This paper analyzes the inherent reason of the high bus voltage stress of single-stage power-factor-correction (PFC) AC/DC converters. Four possible resolving schemes are analyzed and discussed, and some of practical implementation circuits topologies are also given. Theoretical analysis and simulation results show that the both series-charging, parallel-discharging capacitors (SCPDC) scheme and bus-voltage-feedback (BVF) method are deemed to be more viable than the other two methods.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127258626","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 : 1900-01-01DOI: 10.1109/PEDS.1999.792815
T. S. Chung
This paper proposes new techniques for the fast transient stability analysis of power systems embedded with HVDC (high voltage DC link) based on a corrected transient energy function approach. The method is based on an innovative iteration approach used to evaluate the AC terminal voltages of HVDC links at each integration step and is developed for enhancing the efficiency of stability trajectory calculations. In addition, the corrected energy function approach with corrected transient energy and corrected potential energy boundary surface is used in the AC/DC system for the estimation of transient energy margin. The approach provides more accurate results in transient stability assessment than conventional hybrid methods. Simulation results on a 36-bus, 8-generator test AC/DC power system are presented to show that the approach offers a promising tool to estimate transient stability limit conditions for AC/DC systems.
{"title":"Assessment of stability effects of HVDC link by an improved energy function method","authors":"T. S. Chung","doi":"10.1109/PEDS.1999.792815","DOIUrl":"https://doi.org/10.1109/PEDS.1999.792815","url":null,"abstract":"This paper proposes new techniques for the fast transient stability analysis of power systems embedded with HVDC (high voltage DC link) based on a corrected transient energy function approach. The method is based on an innovative iteration approach used to evaluate the AC terminal voltages of HVDC links at each integration step and is developed for enhancing the efficiency of stability trajectory calculations. In addition, the corrected energy function approach with corrected transient energy and corrected potential energy boundary surface is used in the AC/DC system for the estimation of transient energy margin. The approach provides more accurate results in transient stability assessment than conventional hybrid methods. Simulation results on a 36-bus, 8-generator test AC/DC power system are presented to show that the approach offers a promising tool to estimate transient stability limit conditions for AC/DC systems.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115572068","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 : 1900-01-01DOI: 10.1109/PEDS.1999.794562
Xie Xuefei, C. H. Yan, M. Pong
In self-driven synchronous rectification circuit, transformer secondary winding is often used directly to drive synchronous MOSFETs. Transformer leakage inductance and other parasitic inductance in the rectification loop are found to contribute to rectification loss. The body diode of synchronous rectifiers is on during current commutation in two SRs because reflected secondary voltage falls on these parasitic inductances instead of the gate terminal of SR in this duration. Body diode turn on greatly degrades the performance of SR. The case is worse in high frequency, high current applications. Detailed analysis of this phenomenon is given in the paper. An equivalent model is established to analyze and evaluate the performance of SR with the existence of parasitic inductance. Simulation and experiment waveforms confirm the model and analysis. Additionally, optimal driving waveforms for SRs are discussed. Two improved gate drive methods are presented and compared.
{"title":"Studies of self-driven synchronous rectification in low voltage power conversion","authors":"Xie Xuefei, C. H. Yan, M. Pong","doi":"10.1109/PEDS.1999.794562","DOIUrl":"https://doi.org/10.1109/PEDS.1999.794562","url":null,"abstract":"In self-driven synchronous rectification circuit, transformer secondary winding is often used directly to drive synchronous MOSFETs. Transformer leakage inductance and other parasitic inductance in the rectification loop are found to contribute to rectification loss. The body diode of synchronous rectifiers is on during current commutation in two SRs because reflected secondary voltage falls on these parasitic inductances instead of the gate terminal of SR in this duration. Body diode turn on greatly degrades the performance of SR. The case is worse in high frequency, high current applications. Detailed analysis of this phenomenon is given in the paper. An equivalent model is established to analyze and evaluate the performance of SR with the existence of parasitic inductance. Simulation and experiment waveforms confirm the model and analysis. Additionally, optimal driving waveforms for SRs are discussed. Two improved gate drive methods are presented and compared.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130377126","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 : 1900-01-01DOI: 10.1109/PEDS.1999.794565
Peng Huaidong, L. Xiaofan
The direct-frequency converter (DFC) has more advantages than the traditional DC-link AC-DC-AC frequency converter. This paper introduces a direct-frequency converter using bi-directional switches. Its operation principle is discussed in detail and the ripple component attended by aborting the DC-link in the equivalent input voltage is analyzed. A DPWM algorithm is employed to eliminate its influence on the output voltage. Computer simulation using MATLAB/SIMULINK is also presented to examine the performance of the algorithm. At last experimental results on a three-phase 50 Hz AC input, single-phase 400 Hz AC output circuits using the TMS320F240 as the controller are provided.
{"title":"Investigation of direct-frequency converter","authors":"Peng Huaidong, L. Xiaofan","doi":"10.1109/PEDS.1999.794565","DOIUrl":"https://doi.org/10.1109/PEDS.1999.794565","url":null,"abstract":"The direct-frequency converter (DFC) has more advantages than the traditional DC-link AC-DC-AC frequency converter. This paper introduces a direct-frequency converter using bi-directional switches. Its operation principle is discussed in detail and the ripple component attended by aborting the DC-link in the equivalent input voltage is analyzed. A DPWM algorithm is employed to eliminate its influence on the output voltage. Computer simulation using MATLAB/SIMULINK is also presented to examine the performance of the algorithm. At last experimental results on a three-phase 50 Hz AC input, single-phase 400 Hz AC output circuits using the TMS320F240 as the controller are provided.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121509194","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 : 1900-01-01DOI: 10.1109/PEDS.1999.792873
Z. Jianfeng, Jiang Ping, Li Naihu, Tang Guoqing, Deng Junxiong
This paper discusses the different structures of power quality compensator (PQC), and mainly illustrates the influences on its voltampere (VA) rating and compensatory performance, which is exhibited under the condition that the AC input of main circuit's DC supply is extracted from the system or the load side. Meantime, the impacts on PQC are also analyzed when a three-phase rectifier or PWM rectifier is adopted as the DC supply. The simulation results verify the correctness of the theoretical analysis.
{"title":"Study of power quality compensators in power system","authors":"Z. Jianfeng, Jiang Ping, Li Naihu, Tang Guoqing, Deng Junxiong","doi":"10.1109/PEDS.1999.792873","DOIUrl":"https://doi.org/10.1109/PEDS.1999.792873","url":null,"abstract":"This paper discusses the different structures of power quality compensator (PQC), and mainly illustrates the influences on its voltampere (VA) rating and compensatory performance, which is exhibited under the condition that the AC input of main circuit's DC supply is extracted from the system or the load side. Meantime, the impacts on PQC are also analyzed when a three-phase rectifier or PWM rectifier is adopted as the DC supply. The simulation results verify the correctness of the theoretical analysis.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"51 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113957117","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 : 1900-01-01DOI: 10.1109/PEDS.1999.792762
K.R.M.N. Ratnayake, Y. Murai, T. Watanabe
This paper presents a simple PWM technique to control neutral point voltage of the multi-level inverter. The multi-level power conversion systems have been receiving increasing attention, especially for high power applications. The proposed method employs a modified version of multi-level sinusoidal pulse width modulation (SPWM) scheme. This method avoids the requirement of high capacity DC link capacitors, which are employed in most of the present three-level inverter industrial applications. The new PWM scheme is less complex than most of the other available neutral point clamping control methods.
{"title":"Novel carrier PWM scheme to control neutral point voltage fluctuations in three-level voltage source inverter","authors":"K.R.M.N. Ratnayake, Y. Murai, T. Watanabe","doi":"10.1109/PEDS.1999.792762","DOIUrl":"https://doi.org/10.1109/PEDS.1999.792762","url":null,"abstract":"This paper presents a simple PWM technique to control neutral point voltage of the multi-level inverter. The multi-level power conversion systems have been receiving increasing attention, especially for high power applications. The proposed method employs a modified version of multi-level sinusoidal pulse width modulation (SPWM) scheme. This method avoids the requirement of high capacity DC link capacitors, which are employed in most of the present three-level inverter industrial applications. The new PWM scheme is less complex than most of the other available neutral point clamping control methods.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128121463","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}