Pub Date : 2003-06-15DOI: 10.1109/PESC.2003.1217682
C. T. Tinsley, E. Hertz, R. Caire, D. Boroyevich
This paper describes the development of an average model of a hexagon transformer and rectifier (hex t/r) system. The average model is derived in the dq0 rotating reference frame. A technique for representing the commutation inductance located on the DC side of the rectifier is also presented. Parameter estimation is incorporated in the average model through the use of polynomial fits. The use of the average model reduces computation time by a factor of 5. Experimental results of an 11 kVA hex t/r prototype are provided to verify the validity of the model.
{"title":"Average modeling of a hexagon transformer and rectifier","authors":"C. T. Tinsley, E. Hertz, R. Caire, D. Boroyevich","doi":"10.1109/PESC.2003.1217682","DOIUrl":"https://doi.org/10.1109/PESC.2003.1217682","url":null,"abstract":"This paper describes the development of an average model of a hexagon transformer and rectifier (hex t/r) system. The average model is derived in the dq0 rotating reference frame. A technique for representing the commutation inductance located on the DC side of the rectifier is also presented. Parameter estimation is incorporated in the average model through the use of polynomial fits. The use of the average model reduces computation time by a factor of 5. Experimental results of an 11 kVA hex t/r prototype are provided to verify the validity of the model.","PeriodicalId":236199,"journal":{"name":"IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC '03.","volume":"172 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124205032","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 : 2003-06-15DOI: 10.1109/PESC.2003.1218304
A. Wu, P. Chapman
A method for calculating current waveforms to drive permanent-magnet synchronous machines for canceling torque ripple and minimizing stator ohmic losses is presented. The method is comparatively simple to those previously shown, and is more general. The method is valid for any shape of back EMF and can be used for unbalanced, asymmetrical operation. Simple equations result that can easily be applied in real time controls.
{"title":"Cancellation of torque ripple due to nonidealities of permanent magnet synchronous machine drives","authors":"A. Wu, P. Chapman","doi":"10.1109/PESC.2003.1218304","DOIUrl":"https://doi.org/10.1109/PESC.2003.1218304","url":null,"abstract":"A method for calculating current waveforms to drive permanent-magnet synchronous machines for canceling torque ripple and minimizing stator ohmic losses is presented. The method is comparatively simple to those previously shown, and is more general. The method is valid for any shape of back EMF and can be used for unbalanced, asymmetrical operation. Simple equations result that can easily be applied in real time controls.","PeriodicalId":236199,"journal":{"name":"IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC '03.","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124273990","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 : 2003-06-15DOI: 10.1109/PESC.2003.1217743
X. Kang, A. Caiafa, E. Santi, J. Hudgins, P. Palmer
Former simulation studies of the auxiliary resonant commutated pole (ARCP), a well-known high power soft-switching inverter, have invariably used simplified power device models, obtaining fast simulation speed, but sacrificing accuracy. In this research, we apply to the simulation of the ARCP converter physics-based IGBT and power diode models, which have been proven robust in the hard switching circuit simulation. With this approach, it is possible to obtain more detailed waveforms of the commutation process and more accurate estimation of the system losses.
{"title":"Simulation of ARCP converter with physics-based circuit simulator device models","authors":"X. Kang, A. Caiafa, E. Santi, J. Hudgins, P. Palmer","doi":"10.1109/PESC.2003.1217743","DOIUrl":"https://doi.org/10.1109/PESC.2003.1217743","url":null,"abstract":"Former simulation studies of the auxiliary resonant commutated pole (ARCP), a well-known high power soft-switching inverter, have invariably used simplified power device models, obtaining fast simulation speed, but sacrificing accuracy. In this research, we apply to the simulation of the ARCP converter physics-based IGBT and power diode models, which have been proven robust in the hard switching circuit simulation. With this approach, it is possible to obtain more detailed waveforms of the commutation process and more accurate estimation of the system losses.","PeriodicalId":236199,"journal":{"name":"IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC '03.","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114670821","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 : 2003-06-15DOI: 10.1109/PESC.2003.1218176
Z. Sorchini, P. Krein
A simple, real-time electric field sensor intended for proximity estimation is proposed. The sensor relies on capacitive induction to provide source strength and distance estimates. Field gradient information was found to be useful for proximity estimation, and is provided by the sensor configuration. A decision law, that processes sensor data to provide the user with clearance information, is proposed.
{"title":"Live power line and lead proximity estimation via real-time electric field sensor","authors":"Z. Sorchini, P. Krein","doi":"10.1109/PESC.2003.1218176","DOIUrl":"https://doi.org/10.1109/PESC.2003.1218176","url":null,"abstract":"A simple, real-time electric field sensor intended for proximity estimation is proposed. The sensor relies on capacitive induction to provide source strength and distance estimates. Field gradient information was found to be useful for proximity estimation, and is provided by the sensor configuration. A decision law, that processes sensor data to provide the user with clearance information, is proposed.","PeriodicalId":236199,"journal":{"name":"IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC '03.","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114936676","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 : 2003-06-15DOI: 10.1109/PESC.2003.1216804
R. Bojoi, F. Profumo, A. Tenconi
The digital synchronous frame current regulation for dual-three phase induction motor drives is discussed in the paper. The induction machine has two sets of stator three-phase windings spatially shifted by 30 electrical degrees. The stator windings are fed by a current controlled PWM (CRPWM) six-phase IGBT voltage source inverter (VSI). Three key issues are discussed: (1) the machine model based on two different approaches, (2) two different current regulation schemes to cope with the inherent asymmetries of the drive and (3) the decoupling schemes for high speed operation. Experimental results are presented for a digital direct rotor field oriented control (DRFOC) of a 10 kW dual three-phase induction motor drive prototype.
{"title":"Digital synchronous frame current regulation for dual three-phase induction motor drives","authors":"R. Bojoi, F. Profumo, A. Tenconi","doi":"10.1109/PESC.2003.1216804","DOIUrl":"https://doi.org/10.1109/PESC.2003.1216804","url":null,"abstract":"The digital synchronous frame current regulation for dual-three phase induction motor drives is discussed in the paper. The induction machine has two sets of stator three-phase windings spatially shifted by 30 electrical degrees. The stator windings are fed by a current controlled PWM (CRPWM) six-phase IGBT voltage source inverter (VSI). Three key issues are discussed: (1) the machine model based on two different approaches, (2) two different current regulation schemes to cope with the inherent asymmetries of the drive and (3) the decoupling schemes for high speed operation. Experimental results are presented for a digital direct rotor field oriented control (DRFOC) of a 10 kW dual three-phase induction motor drive prototype.","PeriodicalId":236199,"journal":{"name":"IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC '03.","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123656872","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 : 2003-06-15DOI: 10.1109/PESC.2003.1218266
M. Baumann, J. Kolar
In this paper the reliable operation of a three-phase three-switch buck-type PWM unity power factor rectifier with integrated boost output stage under heavily unbalanced mains, i.e. mains voltage unbalance, loss of one phase, short circuit of two phases or earth fault of one phase is investigated theoretically and experimentally. The analytical calculation of the relative on-times of the active switching states and of the DC link current reference value is treated in detail for active and deactivated boost output stage. Based on the theoretical considerations a control scheme which allows to control the system for any mains condition without change-over of the control structure is described. Furthermore, digital simulations as well as experimental results are shown which confirm the proposed control concept for different mains failure conditions and for the transition from balanced mains to a failure condition and vice versa. The experimental results are derived from a 5 kW prototype, input voltage range 208-480 V/sub rms/ line-to-line, output voltage 400 V/sub DC/ of the rectifier system, where the control is realized by a 32-bit digital signal processor.
{"title":"A novel control concept for reliable operation of a three-phase three-switch buck-type unity power factor rectifier with integrated boost output stage under heavily unbalanced mains condition","authors":"M. Baumann, J. Kolar","doi":"10.1109/PESC.2003.1218266","DOIUrl":"https://doi.org/10.1109/PESC.2003.1218266","url":null,"abstract":"In this paper the reliable operation of a three-phase three-switch buck-type PWM unity power factor rectifier with integrated boost output stage under heavily unbalanced mains, i.e. mains voltage unbalance, loss of one phase, short circuit of two phases or earth fault of one phase is investigated theoretically and experimentally. The analytical calculation of the relative on-times of the active switching states and of the DC link current reference value is treated in detail for active and deactivated boost output stage. Based on the theoretical considerations a control scheme which allows to control the system for any mains condition without change-over of the control structure is described. Furthermore, digital simulations as well as experimental results are shown which confirm the proposed control concept for different mains failure conditions and for the transition from balanced mains to a failure condition and vice versa. The experimental results are derived from a 5 kW prototype, input voltage range 208-480 V/sub rms/ line-to-line, output voltage 400 V/sub DC/ of the rectifier system, where the control is realized by a 32-bit digital signal processor.","PeriodicalId":236199,"journal":{"name":"IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC '03.","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124839252","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 : 2003-06-15DOI: 10.1109/PESC.2003.1218283
S. Saggini, M. Ghioni, Angelo Geraci
This paper presents a new digital control architecture for voltage regulator modules, which employs only two digital-to-analog converters with low resolution (7 bit). The control strategy combines current programming and variable frequency operation, leading to negligible quantization effects. Both output voltage accuracy and stability are improved with respect to traditional digital solutions. The new architecture is designed to provide active current sharing and adaptive voltage positioning functions. A detailed description of the controller is given with reference to a single-phase buck converter. Extension to multiphase converters is straightforward. The control algorithm has been implemented into a commercial FPGA device by using only 2200 equivalent gates. Experimental results from a four-phase converter based on the proposed control architecture are presented.
{"title":"A low-complexity high-performance digital control architecture for voltage regulator modules","authors":"S. Saggini, M. Ghioni, Angelo Geraci","doi":"10.1109/PESC.2003.1218283","DOIUrl":"https://doi.org/10.1109/PESC.2003.1218283","url":null,"abstract":"This paper presents a new digital control architecture for voltage regulator modules, which employs only two digital-to-analog converters with low resolution (7 bit). The control strategy combines current programming and variable frequency operation, leading to negligible quantization effects. Both output voltage accuracy and stability are improved with respect to traditional digital solutions. The new architecture is designed to provide active current sharing and adaptive voltage positioning functions. A detailed description of the controller is given with reference to a single-phase buck converter. Extension to multiphase converters is straightforward. The control algorithm has been implemented into a commercial FPGA device by using only 2200 equivalent gates. Experimental results from a four-phase converter based on the proposed control architecture are presented.","PeriodicalId":236199,"journal":{"name":"IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC '03.","volume":"184 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127058691","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 : 2003-06-15DOI: 10.1109/PESC.2003.1218130
Tae-Woo Kim, Hack-Sung Kim
A novel ZCS PWM converter with dual converter operation is proposed. All switches in the proposed converter are operating to work alternatively turn-on and turn-off with soft switching condition. The switch S2 in the conventional ZVT converter plays a part as the auxiliary switch to operate the main switch S1 and the rectifier in the soft switching condition during the transition period. But the switch S2 in the proposed converter has two roles as both the auxiliary switch to hold the soft switching condition and the main switch for a dual operation. A 100 kHz, 200 W boost converter has been implemented to verify the operation and performance of the proposed converter.
{"title":"New ZCS PWM converter with operating a dual converter","authors":"Tae-Woo Kim, Hack-Sung Kim","doi":"10.1109/PESC.2003.1218130","DOIUrl":"https://doi.org/10.1109/PESC.2003.1218130","url":null,"abstract":"A novel ZCS PWM converter with dual converter operation is proposed. All switches in the proposed converter are operating to work alternatively turn-on and turn-off with soft switching condition. The switch S2 in the conventional ZVT converter plays a part as the auxiliary switch to operate the main switch S1 and the rectifier in the soft switching condition during the transition period. But the switch S2 in the proposed converter has two roles as both the auxiliary switch to hold the soft switching condition and the main switch for a dual operation. A 100 kHz, 200 W boost converter has been implemented to verify the operation and performance of the proposed converter.","PeriodicalId":236199,"journal":{"name":"IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC '03.","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127402605","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 : 2003-06-15DOI: 10.1109/PESC.2003.1217751
Q. Liu, W. Shen, F. Wang, D. Boroyevich, V. Stefanovic, M. Arpilliere
As a step to achieve the objective of predicting electromagnetic interference (EMI) noise in IGBT PWM inverters, this paper proposes a new and practical EMI noise source modeling method. An equivalent Thevenin source in the frequency-domain, including the voltage source and source impedance, is employed to model the main EMI noise emission source - the IGBT switching. The modeling approach for both the differential mode (DM) and common mode (CM) noise source is studied. The methodology is verified experimentally using a simple, controlled testbed. The important issues on measurement repeatability and data processing are also investigated and discussed.
{"title":"Experimental evaluation of IGBTs for characterizing and modeling conducted EMI emission in PWM inverters","authors":"Q. Liu, W. Shen, F. Wang, D. Boroyevich, V. Stefanovic, M. Arpilliere","doi":"10.1109/PESC.2003.1217751","DOIUrl":"https://doi.org/10.1109/PESC.2003.1217751","url":null,"abstract":"As a step to achieve the objective of predicting electromagnetic interference (EMI) noise in IGBT PWM inverters, this paper proposes a new and practical EMI noise source modeling method. An equivalent Thevenin source in the frequency-domain, including the voltage source and source impedance, is employed to model the main EMI noise emission source - the IGBT switching. The modeling approach for both the differential mode (DM) and common mode (CM) noise source is studied. The methodology is verified experimentally using a simple, controlled testbed. The important issues on measurement repeatability and data processing are also investigated and discussed.","PeriodicalId":236199,"journal":{"name":"IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC '03.","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127469343","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 : 2003-06-15DOI: 10.1109/PESC.2003.1218290
T. Bruckner, D. G. Holmes
The three-level neutral-point-clamped voltage source inverter is widely used in high power, medium voltage applications. This paper studies continuous and discontinuous PWM for this inverter. Detailed analysis of discontinuous modulation shows that the average switching frequency is not directly proportional to the carrier or sampling frequency, since additional switching transitions occur between different regions of discontinuity. At typical switching frequencies for high power applications (up to 2 kHz) these additional transitions contribute significantly to the inverter's total losses, so that a proper comparison of the harmonic performance can only be carried out under constant loss conditions with varying carrier frequency. This comparison is performed for a typical industrial medium voltage inverter. The paper then considers the major issues of neutral-point voltage balancing and loss distribution within the inverter, for the identified optimal modulation schemes.
{"title":"Optimal pulse width modulation for three-level inverters","authors":"T. Bruckner, D. G. Holmes","doi":"10.1109/PESC.2003.1218290","DOIUrl":"https://doi.org/10.1109/PESC.2003.1218290","url":null,"abstract":"The three-level neutral-point-clamped voltage source inverter is widely used in high power, medium voltage applications. This paper studies continuous and discontinuous PWM for this inverter. Detailed analysis of discontinuous modulation shows that the average switching frequency is not directly proportional to the carrier or sampling frequency, since additional switching transitions occur between different regions of discontinuity. At typical switching frequencies for high power applications (up to 2 kHz) these additional transitions contribute significantly to the inverter's total losses, so that a proper comparison of the harmonic performance can only be carried out under constant loss conditions with varying carrier frequency. This comparison is performed for a typical industrial medium voltage inverter. The paper then considers the major issues of neutral-point voltage balancing and loss distribution within the inverter, for the identified optimal modulation schemes.","PeriodicalId":236199,"journal":{"name":"IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC '03.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130077871","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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