Pub Date : 2002-12-10DOI: 10.1109/IAS.2002.1044110
J. Cros, A.J. Perin, P. Viarouge
The soft magnetic composites (SMC) are new soft magnetic materials produced by a powder metallurgy process which can be used for 60 Hz applications. The SMC are interesting for the realization of electromagnetic components used in lighting applications where the current and voltage THD is relatively high. The isotropy of the SMC magnetic and thermal properties can be used to design new structures of inductors and electromagnetic ballasts with high power to weight ratio. In structures with cylindrical symmetry, EMI and audible hum can be reduced. The design of a low frequency inductor used for the passive power factor correction of a lamp ballast system demonstrates the advantages of the SMC. These materials are an interesting alternative technology for lighting system components in terms of efficiency improvement and minimization of the size, weight, and audible hum.
{"title":"Soft magnetic composites for electromagnetic components in lighting applications","authors":"J. Cros, A.J. Perin, P. Viarouge","doi":"10.1109/IAS.2002.1044110","DOIUrl":"https://doi.org/10.1109/IAS.2002.1044110","url":null,"abstract":"The soft magnetic composites (SMC) are new soft magnetic materials produced by a powder metallurgy process which can be used for 60 Hz applications. The SMC are interesting for the realization of electromagnetic components used in lighting applications where the current and voltage THD is relatively high. The isotropy of the SMC magnetic and thermal properties can be used to design new structures of inductors and electromagnetic ballasts with high power to weight ratio. In structures with cylindrical symmetry, EMI and audible hum can be reduced. The design of a low frequency inductor used for the passive power factor correction of a lamp ballast system demonstrates the advantages of the SMC. These materials are an interesting alternative technology for lighting system components in terms of efficiency improvement and minimization of the size, weight, and audible hum.","PeriodicalId":202482,"journal":{"name":"Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123308209","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 : 2002-12-10DOI: 10.1109/IAS.2002.1044169
J. Dorleijn, L.H. Goud
During the past few years the electrical data of the cathodes of some fluorescent lamps were standardized. An explanation is given of the choices made for standardizing the static resistances of the cathode coils. Also in the forthcoming new editions of the IEC standards for fluorescent lamps (IEC 60901 "Single-capped fluorescent lamps" and IEC 60081 "Double-capped fluorescent lamps") several lamps will get a new and more general description for the preheating of electrodes. The physical background and justification for this description are given.
{"title":"Standardisation of the static resistances of fluorescent lamp cathodes and new data for preheating","authors":"J. Dorleijn, L.H. Goud","doi":"10.1109/IAS.2002.1044169","DOIUrl":"https://doi.org/10.1109/IAS.2002.1044169","url":null,"abstract":"During the past few years the electrical data of the cathodes of some fluorescent lamps were standardized. An explanation is given of the choices made for standardizing the static resistances of the cathode coils. Also in the forthcoming new editions of the IEC standards for fluorescent lamps (IEC 60901 \"Single-capped fluorescent lamps\" and IEC 60081 \"Double-capped fluorescent lamps\") several lamps will get a new and more general description for the preheating of electrodes. The physical background and justification for this description are given.","PeriodicalId":202482,"journal":{"name":"Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344)","volume":"11 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121012994","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 : 2002-12-10DOI: 10.1109/IAS.2002.1043824
G. Andersen, F. Blaabjerg
The grid current harmonics of a current-programmed-controlled (CPC) PFC rectifier strongly depends on the choice of switching frequency and switching inductance. This paper describes a new, simple and very fast method to calculate the grid current of a CPC controlled PFC converter. The method includes ramp compensation, different command current waveforms and the influence of the filter. One method shows how the product of the inductance and the switching frequency determines the maximum power level and complies with IEC-61000-3-2. Design examples illustrate the possibilities of the presented design tool. The method is compared with simulated values as well with measured values and the calculations match very well.
{"title":"Designing single phase current-programmed-controlled rectifiers by harmonic currents","authors":"G. Andersen, F. Blaabjerg","doi":"10.1109/IAS.2002.1043824","DOIUrl":"https://doi.org/10.1109/IAS.2002.1043824","url":null,"abstract":"The grid current harmonics of a current-programmed-controlled (CPC) PFC rectifier strongly depends on the choice of switching frequency and switching inductance. This paper describes a new, simple and very fast method to calculate the grid current of a CPC controlled PFC converter. The method includes ramp compensation, different command current waveforms and the influence of the filter. One method shows how the product of the inductance and the switching frequency determines the maximum power level and complies with IEC-61000-3-2. Design examples illustrate the possibilities of the presented design tool. The method is compared with simulated values as well with measured values and the calculations match very well.","PeriodicalId":202482,"journal":{"name":"Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121504699","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 : 2002-12-10DOI: 10.1109/IAS.2002.1042808
Li Sun, Hanying Gao, Qingliang Song, J. Nei
In order to resolve the torque ripple of the PM brushless DC motor, two methods of testing torque ripple are developed. One is a balanced direct testing method and the other is a current indirect testing method. The measurement errors are analyzed. The experimental results indicate that the two testing methods are agreement.
{"title":"Measurement of torque ripple in PM brushless motors","authors":"Li Sun, Hanying Gao, Qingliang Song, J. Nei","doi":"10.1109/IAS.2002.1042808","DOIUrl":"https://doi.org/10.1109/IAS.2002.1042808","url":null,"abstract":"In order to resolve the torque ripple of the PM brushless DC motor, two methods of testing torque ripple are developed. One is a balanced direct testing method and the other is a current indirect testing method. The measurement errors are analyzed. The experimental results indicate that the two testing methods are agreement.","PeriodicalId":202482,"journal":{"name":"Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133417840","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 : 2002-12-10DOI: 10.1109/IAS.2002.1042659
V. Leppanen, J. Luomi
A controller structure is proposed for the tracking of the rotor flux angle in a speed sensorless induction motor. The method is based on the fundamental-wave induction motor model that is augmented with the mechanical dynamics. A low-frequency current test signal is injected into the stator winding, and the response of the stator voltage is used to produce an error signal that can be controlled to zero by forcing the current signal into the direction of the rotor flux. The validity of the method down to zero stator frequency and speed is confirmed by the results of simulations and experiments.
{"title":"Rotor flux angle tracking controller for sensorless induction motor drives","authors":"V. Leppanen, J. Luomi","doi":"10.1109/IAS.2002.1042659","DOIUrl":"https://doi.org/10.1109/IAS.2002.1042659","url":null,"abstract":"A controller structure is proposed for the tracking of the rotor flux angle in a speed sensorless induction motor. The method is based on the fundamental-wave induction motor model that is augmented with the mechanical dynamics. A low-frequency current test signal is injected into the stator winding, and the response of the stator voltage is used to produce an error signal that can be controlled to zero by forcing the current signal into the direction of the rotor flux. The validity of the method down to zero stator frequency and speed is confirmed by the results of simulations and experiments.","PeriodicalId":202482,"journal":{"name":"Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344)","volume":"164 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133687302","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 : 2002-12-10DOI: 10.1109/IAS.2002.1042816
S. Musumeci, R. Pagano, A. Raciti, G. Belverde, A. Melito
Short circuit faults of IGBTs determine overcurrent through the devices subsequently to a turn-on switching or during the on-state condition, leading respectively to hard switching fault (HSF) or fault under load (FUL). Firstly, the state of the art as appearing in literature is recalled and discussed. A new short-circuit protection scheme, which allows protection of IGBT devices against fault under load and hard switching fault transients, is presented. It performs the fault current limiting action within the short circuit time, and subsequently forces the device to gate on again in a tentative turn-on. Moreover, the proposed circuitry allows strong bounding of the peak of the current in FUL transients. The validity and correctness of the proposed approach has been extensively validated by experimental tests.
{"title":"A new gate circuit performing fault protections of IGBTs during short circuit transients","authors":"S. Musumeci, R. Pagano, A. Raciti, G. Belverde, A. Melito","doi":"10.1109/IAS.2002.1042816","DOIUrl":"https://doi.org/10.1109/IAS.2002.1042816","url":null,"abstract":"Short circuit faults of IGBTs determine overcurrent through the devices subsequently to a turn-on switching or during the on-state condition, leading respectively to hard switching fault (HSF) or fault under load (FUL). Firstly, the state of the art as appearing in literature is recalled and discussed. A new short-circuit protection scheme, which allows protection of IGBT devices against fault under load and hard switching fault transients, is presented. It performs the fault current limiting action within the short circuit time, and subsequently forces the device to gate on again in a tentative turn-on. Moreover, the proposed circuitry allows strong bounding of the peak of the current in FUL transients. The validity and correctness of the proposed approach has been extensively validated by experimental tests.","PeriodicalId":202482,"journal":{"name":"Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344)","volume":"158 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134484936","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 : 2002-12-10DOI: 10.1109/IAS.2002.1044093
M. Elbuluk, A. Hammoud, S. Gerber, R. Patterson
DC/DC converters are widely used in power management, conditioning, and control of space power systems. Deep space applications require electronics that withstand cryogenic temperature and meet a stringent radiation tolerance. In this work, the performance of an advanced, radiation-hardened (radhard) commercial DC/DC converter module was investigated at cryogenic temperatures. The converter was investigated in terms of its steady state and dynamic operations. The output voltage regulation, efficiency, terminal current ripple characteristics, and output voltage response to load changes were determined in the temperature range of 20/spl deg/C to - 140/spl deg/C. These parameters were obtained at various load levels and at different input voltages. The experimental procedures along with the results obtained on the investigated converter are presented and discussed.
{"title":"Cryogenic evaluation of an advanced DC/DC converter module for deep space applications","authors":"M. Elbuluk, A. Hammoud, S. Gerber, R. Patterson","doi":"10.1109/IAS.2002.1044093","DOIUrl":"https://doi.org/10.1109/IAS.2002.1044093","url":null,"abstract":"DC/DC converters are widely used in power management, conditioning, and control of space power systems. Deep space applications require electronics that withstand cryogenic temperature and meet a stringent radiation tolerance. In this work, the performance of an advanced, radiation-hardened (radhard) commercial DC/DC converter module was investigated at cryogenic temperatures. The converter was investigated in terms of its steady state and dynamic operations. The output voltage regulation, efficiency, terminal current ripple characteristics, and output voltage response to load changes were determined in the temperature range of 20/spl deg/C to - 140/spl deg/C. These parameters were obtained at various load levels and at different input voltages. The experimental procedures along with the results obtained on the investigated converter are presented and discussed.","PeriodicalId":202482,"journal":{"name":"Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134569612","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 : 2002-12-10DOI: 10.1109/IAS.2002.1044071
Hyunbae Kim, Robert D. Lorenz
Current regulators for interior permanent magnet machines have unique challenges if high performance torque regulation is to be achieved. This paper presents a novel approach for fully decoupling the problematic cross-coupling with estimated parameters from online self-tuning. In the on-line estimation algorithm, the model is formulated such that cross-coupled estimated parameters are eliminated, which improves the parameter estimation robustness. Parameter estimation is further improved by combining the model with a closed loop observer. Cross-coupling terms can then be decoupled using estimated parameters to improve the performance of the current regulator.
{"title":"Improved current regulators for IPM machine drives using on-line parameter estimation","authors":"Hyunbae Kim, Robert D. Lorenz","doi":"10.1109/IAS.2002.1044071","DOIUrl":"https://doi.org/10.1109/IAS.2002.1044071","url":null,"abstract":"Current regulators for interior permanent magnet machines have unique challenges if high performance torque regulation is to be achieved. This paper presents a novel approach for fully decoupling the problematic cross-coupling with estimated parameters from online self-tuning. In the on-line estimation algorithm, the model is formulated such that cross-coupled estimated parameters are eliminated, which improves the parameter estimation robustness. Parameter estimation is further improved by combining the model with a closed loop observer. Cross-coupling terms can then be decoupled using estimated parameters to improve the performance of the current regulator.","PeriodicalId":202482,"journal":{"name":"Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132077443","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 : 2002-12-10DOI: 10.1109/IAS.2002.1044148
W. Greason
The electrostatic discharge (ESD) characteristics of a three body problem comprised of a charged human body approaching an electronic system with an interposed guard electrode are investigated. Capacitance coefficients were measured for various three conductor arrangements; for an assumed charge on the human body, body potentials were calculated and the relative effectiveness of different guard electrode geometries to control the ESD event compared. The results provide a better understanding of the fundamental principles involved in the ESD event involving three bodies and have application in the design of interfaces between the charged human body and electronic systems.
{"title":"Experimental study of control of human body electrostatic discharge (ESD) using passive and active guard electrodes","authors":"W. Greason","doi":"10.1109/IAS.2002.1044148","DOIUrl":"https://doi.org/10.1109/IAS.2002.1044148","url":null,"abstract":"The electrostatic discharge (ESD) characteristics of a three body problem comprised of a charged human body approaching an electronic system with an interposed guard electrode are investigated. Capacitance coefficients were measured for various three conductor arrangements; for an assumed charge on the human body, body potentials were calculated and the relative effectiveness of different guard electrode geometries to control the ESD event compared. The results provide a better understanding of the fundamental principles involved in the ESD event involving three bodies and have application in the design of interfaces between the charged human body and electronic systems.","PeriodicalId":202482,"journal":{"name":"Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133886458","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 : 2002-12-10DOI: 10.1109/IAS.2002.1044102
Xuezhi Yang, G. Pang, N. Yung
This paper proposes a new method for fabric defect classification by incorporating the design of a wavelet frames based feature extractor with the design of a Euclidean distance based classifier. Channel variances at the outputs of the wavelet frame decomposition are used to characterize each nonoverlapping window of the fabric image. A feature extractor using linear transformation matrix is further employed to extract the classification-oriented features. With a Euclidean distance based classifier, each nonoverlapping window of the fabric image is then assigned to its corresponding category. Minimization of the classification error is achieved by incorporating the design of the feature extractor with the design of the classifier based on minimum classification error (MCE) training method. The proposed method has been evaluated on the classification of 329 defect samples containing nine classes of fabric defects, and 328 nondefect samples, where 93.1% classification accuracy has been achieved.
{"title":"Fabric defect classification using wavelet frames and minimum classification error training","authors":"Xuezhi Yang, G. Pang, N. Yung","doi":"10.1109/IAS.2002.1044102","DOIUrl":"https://doi.org/10.1109/IAS.2002.1044102","url":null,"abstract":"This paper proposes a new method for fabric defect classification by incorporating the design of a wavelet frames based feature extractor with the design of a Euclidean distance based classifier. Channel variances at the outputs of the wavelet frame decomposition are used to characterize each nonoverlapping window of the fabric image. A feature extractor using linear transformation matrix is further employed to extract the classification-oriented features. With a Euclidean distance based classifier, each nonoverlapping window of the fabric image is then assigned to its corresponding category. Minimization of the classification error is achieved by incorporating the design of the feature extractor with the design of the classifier based on minimum classification error (MCE) training method. The proposed method has been evaluated on the classification of 329 defect samples containing nine classes of fabric defects, and 328 nondefect samples, where 93.1% classification accuracy has been achieved.","PeriodicalId":202482,"journal":{"name":"Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133572763","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：