Pub Date : 2011-11-01DOI: 10.1109/IECON.2011.6119437
M. Hamad, K. Ahmed, B. Williams
Active power filter (APF) performance is affected by system delay introduced in the reference signals and/or the actual injected current. This paper introduces an adaptive control strategy for the shunt APF which is capable of mitigating specific harmonic orders and consequently achieves a low harmonic factor. The delay time is minimized or eliminated when extracting the reference current and controlling the filter current. The control technique is applied to a non-linear load represented by a 6-pulse current source converter to compensate the two dominant harmonics (5th and 7th) of the mains current. The simulation results are verified experimentally using a scaled low-voltage prototype.
{"title":"Selective harmonic filtering of a medium voltage six-pulse line commutated rectifier using an adaptive active power filter","authors":"M. Hamad, K. Ahmed, B. Williams","doi":"10.1109/IECON.2011.6119437","DOIUrl":"https://doi.org/10.1109/IECON.2011.6119437","url":null,"abstract":"Active power filter (APF) performance is affected by system delay introduced in the reference signals and/or the actual injected current. This paper introduces an adaptive control strategy for the shunt APF which is capable of mitigating specific harmonic orders and consequently achieves a low harmonic factor. The delay time is minimized or eliminated when extracting the reference current and controlling the filter current. The control technique is applied to a non-linear load represented by a 6-pulse current source converter to compensate the two dominant harmonics (5th and 7th) of the mains current. The simulation results are verified experimentally using a scaled low-voltage prototype.","PeriodicalId":105539,"journal":{"name":"IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society","volume":" 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113948338","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 : 2011-11-01DOI: 10.1109/IECON.2011.6119920
A. Emhemed, P. Crolla, G. Burt
In addition to other measures such as energy saving, the adoption of a large amount of microgeneration driven by renewable and low carbon energy resources is expected to have the potential to reduce losses associated with producing and delivering electricity, combat climate change and fuel poverty, and improve the overall system performance. However, incorporating a substantial volume of microgeneration within a system that is not designed for such a paradigm could lead to conflicts in the operating strategies of the new and existing centralized generation technologies. This paper investigates the impact of tripping substantial volumes of LV connected microgeneration on the dynamic performance of a large system during significant low frequency events. An initial dynamic model of the UK system based on a number of coherent areas as identified in the UK Transmission Seven Year Statement (SYS) has been developed within a real time digital simulator (RTDS) and this paper presents the early study results.
{"title":"Using real-time simulation to assess the impact of a high penetration of LV connected microgeneration on the wider system performance during severe low frequency","authors":"A. Emhemed, P. Crolla, G. Burt","doi":"10.1109/IECON.2011.6119920","DOIUrl":"https://doi.org/10.1109/IECON.2011.6119920","url":null,"abstract":"In addition to other measures such as energy saving, the adoption of a large amount of microgeneration driven by renewable and low carbon energy resources is expected to have the potential to reduce losses associated with producing and delivering electricity, combat climate change and fuel poverty, and improve the overall system performance. However, incorporating a substantial volume of microgeneration within a system that is not designed for such a paradigm could lead to conflicts in the operating strategies of the new and existing centralized generation technologies. This paper investigates the impact of tripping substantial volumes of LV connected microgeneration on the dynamic performance of a large system during significant low frequency events. An initial dynamic model of the UK system based on a number of coherent areas as identified in the UK Transmission Seven Year Statement (SYS) has been developed within a real time digital simulator (RTDS) and this paper presents the early study results.","PeriodicalId":105539,"journal":{"name":"IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society","volume":"23 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114027164","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 : 2011-11-01DOI: 10.1109/IECON.2011.6120018
Ayman Blorfan, P. Wira, D. Flieller, G. Sturtzer, J. Mercklé
This paper presents a new three-phase hybrid active power filter configuration that interconnects a passive high-pass filter in parallel with an active power filter and a photovoltaic system. The proposed configuration improves the filtering performance of the conventional active power filter, as well as simultaneously supplies the power from the photovoltaic arrays to the loads and utilities. Furthermore, the derivation of the compensation current reference is simplified with the utilization of the extended p-q theory. This paper will describe the proposed hybrid active power filter with photovoltaic system. It will primarily focus on the power circuit, control system and the compensation current reference derivation. The proposed system effectively filters harmonics under 1 kHz but also higher frequencies to achieve a wideband harmonics compensation. The THD of the source current is reduced from 30.09 % to 1.95 %. Simulation results that verify the theoretical predictions of the proposed configuration are presented.
{"title":"A three-phase hybrid active power filter with photovoltaic generation and hysteresis current control","authors":"Ayman Blorfan, P. Wira, D. Flieller, G. Sturtzer, J. Mercklé","doi":"10.1109/IECON.2011.6120018","DOIUrl":"https://doi.org/10.1109/IECON.2011.6120018","url":null,"abstract":"This paper presents a new three-phase hybrid active power filter configuration that interconnects a passive high-pass filter in parallel with an active power filter and a photovoltaic system. The proposed configuration improves the filtering performance of the conventional active power filter, as well as simultaneously supplies the power from the photovoltaic arrays to the loads and utilities. Furthermore, the derivation of the compensation current reference is simplified with the utilization of the extended p-q theory. This paper will describe the proposed hybrid active power filter with photovoltaic system. It will primarily focus on the power circuit, control system and the compensation current reference derivation. The proposed system effectively filters harmonics under 1 kHz but also higher frequencies to achieve a wideband harmonics compensation. The THD of the source current is reduced from 30.09 % to 1.95 %. Simulation results that verify the theoretical predictions of the proposed configuration are presented.","PeriodicalId":105539,"journal":{"name":"IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114825283","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 : 2011-11-01DOI: 10.1109/IECON.2011.6119867
O. Ondel, E. Boutleux, G. Clerc
Presently, condition monitoring and fault diagnostics in electric drives are essential to optimize maintenance operations and increase reliability levels. This paper presents a diagnosis method for electrical and mechanical faults detection. This method combines a detection method based on expertise with a pattern recognition approach so as to detect different faults appearing on the system but also to classify their origins and their severity by reference to an initial data base. In order to prove reliability and efficiency of this method, experimental results are presented using a permanent magnet synchronous motor (PMSM) drive.
{"title":"Diagnosis by pattern recognition for PMSM used in more electric aircraft","authors":"O. Ondel, E. Boutleux, G. Clerc","doi":"10.1109/IECON.2011.6119867","DOIUrl":"https://doi.org/10.1109/IECON.2011.6119867","url":null,"abstract":"Presently, condition monitoring and fault diagnostics in electric drives are essential to optimize maintenance operations and increase reliability levels. This paper presents a diagnosis method for electrical and mechanical faults detection. This method combines a detection method based on expertise with a pattern recognition approach so as to detect different faults appearing on the system but also to classify their origins and their severity by reference to an initial data base. In order to prove reliability and efficiency of this method, experimental results are presented using a permanent magnet synchronous motor (PMSM) drive.","PeriodicalId":105539,"journal":{"name":"IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124336171","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 : 2011-11-01DOI: 10.1109/IECON.2011.6120040
Z. Mohzani, B. Mcgrath, D. G. Holmes
This paper presents an analytical solution for the natural balancing processes of the intermediate Neutral Point (NP) voltage of a three level Neutral-Point Clamped converter. The work begins by identifying the principal driving forces that control this natural balancing process. It then uses this understanding to propose a passive balance-booster filter that substantially reduces the natural balancing time constant, without requiring active control intervention. The results are validated by both matching simulation and experimental results.
{"title":"Natural balancing of the Neutral Point voltage for a three-phase NPC multilevel converter","authors":"Z. Mohzani, B. Mcgrath, D. G. Holmes","doi":"10.1109/IECON.2011.6120040","DOIUrl":"https://doi.org/10.1109/IECON.2011.6120040","url":null,"abstract":"This paper presents an analytical solution for the natural balancing processes of the intermediate Neutral Point (NP) voltage of a three level Neutral-Point Clamped converter. The work begins by identifying the principal driving forces that control this natural balancing process. It then uses this understanding to propose a passive balance-booster filter that substantially reduces the natural balancing time constant, without requiring active control intervention. The results are validated by both matching simulation and experimental results.","PeriodicalId":105539,"journal":{"name":"IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124344143","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 : 2011-11-01DOI: 10.1109/IECON.2011.6119652
Patrick Martin, A. El Matouat, S. Legendre, A. Colder, P. Descamps
The scanning acoustic microscopy (SAM) is widely used today by the manufacturers and researchers in failure analysis labs to improve the microelectronic devices reliability. The goal is to detect and locate flaws inside chips using non destructive test (NDT). New packaging technologies improve the number of layers in a single package using advancing formats including for example flip chip, ball grid array and thereby increasing the number of interfaces to study. This paper deals with the automatic detection of small flaws in the z-axis to reduce time of experiment and facilitate the localization of the flaws especially in solder bump joints and underfill.
{"title":"Fast and accurate method for flaws localization in stacked die packages from acoustic microscopy echoes transients","authors":"Patrick Martin, A. El Matouat, S. Legendre, A. Colder, P. Descamps","doi":"10.1109/IECON.2011.6119652","DOIUrl":"https://doi.org/10.1109/IECON.2011.6119652","url":null,"abstract":"The scanning acoustic microscopy (SAM) is widely used today by the manufacturers and researchers in failure analysis labs to improve the microelectronic devices reliability. The goal is to detect and locate flaws inside chips using non destructive test (NDT). New packaging technologies improve the number of layers in a single package using advancing formats including for example flip chip, ball grid array and thereby increasing the number of interfaces to study. This paper deals with the automatic detection of small flaws in the z-axis to reduce time of experiment and facilitate the localization of the flaws especially in solder bump joints and underfill.","PeriodicalId":105539,"journal":{"name":"IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124085943","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 : 2011-11-01DOI: 10.1109/IECON.2011.6119455
H. Komurcugil
This paper proposes a control strategy for single-phase PWM boost-type inverters. The idea in this strategy is to have feedforward and feedback terms in the control variable. It is shown that the output voltage follows its reference without any error when there is a perfect match between estimated and actual filter capacitance. However, there exists a steady-state error in the output voltage due to the mismatch between estimated and actual filter capacitance. It is shown that this error can be minimized considerably if the controller gain is chosen as large as possible. The feasibility and the performance of the proposed control strategy has been tested and verified by simulations and experiments under linear and nonlinear loads.
{"title":"A new control strategy for single-phase PWM boost-type inverters","authors":"H. Komurcugil","doi":"10.1109/IECON.2011.6119455","DOIUrl":"https://doi.org/10.1109/IECON.2011.6119455","url":null,"abstract":"This paper proposes a control strategy for single-phase PWM boost-type inverters. The idea in this strategy is to have feedforward and feedback terms in the control variable. It is shown that the output voltage follows its reference without any error when there is a perfect match between estimated and actual filter capacitance. However, there exists a steady-state error in the output voltage due to the mismatch between estimated and actual filter capacitance. It is shown that this error can be minimized considerably if the controller gain is chosen as large as possible. The feasibility and the performance of the proposed control strategy has been tested and verified by simulations and experiments under linear and nonlinear loads.","PeriodicalId":105539,"journal":{"name":"IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127758435","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 : 2011-11-01DOI: 10.1109/IECON.2011.6119602
C. Lim, Nasrudin Abd. Rahim, W. Hew, Martin Jones, E. Levi
Model predictive control (MPC) of a multiphase induction motor drive is elaborated. A vector controlled, inverter fed five-phase induction motor is chosen as the platform for verification of the developed algorithm. Indirect rotor field oriented control (IRFOC) is implemented using MPC algorithm for current control, with the idea of achieving fast current response and current ripple minimization. The emphasis in the paper is placed on the optimization of the weighting factor of the x,y-plane current errors in the MPC cost function. For this purpose all 32 possible switching states of the inverter are considered as available input and the impact of the weighting factor on the RMS of the ripple of stator current components and on the triggered inverter states is investigated as a function of the fundamental frequency. It is shown that at different stator fundamental frequencies different weighting factors lead to minimum current ripples. Using weighting factor values, determined in this manner, speed, current and torque performance, achieved using MPC within the IRFOC, are illustrated.
{"title":"Model predictive current control of a five-phase induction motor","authors":"C. Lim, Nasrudin Abd. Rahim, W. Hew, Martin Jones, E. Levi","doi":"10.1109/IECON.2011.6119602","DOIUrl":"https://doi.org/10.1109/IECON.2011.6119602","url":null,"abstract":"Model predictive control (MPC) of a multiphase induction motor drive is elaborated. A vector controlled, inverter fed five-phase induction motor is chosen as the platform for verification of the developed algorithm. Indirect rotor field oriented control (IRFOC) is implemented using MPC algorithm for current control, with the idea of achieving fast current response and current ripple minimization. The emphasis in the paper is placed on the optimization of the weighting factor of the x,y-plane current errors in the MPC cost function. For this purpose all 32 possible switching states of the inverter are considered as available input and the impact of the weighting factor on the RMS of the ripple of stator current components and on the triggered inverter states is investigated as a function of the fundamental frequency. It is shown that at different stator fundamental frequencies different weighting factors lead to minimum current ripples. Using weighting factor values, determined in this manner, speed, current and torque performance, achieved using MPC within the IRFOC, are illustrated.","PeriodicalId":105539,"journal":{"name":"IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127766042","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 : 2011-11-01DOI: 10.1109/IECON.2011.6119460
Yan Li, T. Zheng, Chuang Zhao, Rui Du, Quandong Wang
In hybrid renewable power systems, the use of a multiple-input dc/dc converter (MIC) leads to simpler circuit and lower cost, compared to the conventional use of several single-input converters. This paper proposed a novel three-input buck/boost/buck-boost converter, which can be applied in all kinds of input voltage application. All the power sources in this converter can deliver power to the load either simultaneously or individually in one switching period. In addition, the steady relationship and power management strategy of this converter have been derived. Finally, three generating method of a multiple-input buck/boost/ buck-boost converter are given, and this method can be extended to the other multiple-input dc/dc converter.
{"title":"A novel buck/boost/buck-boost three-input DC/DC converter","authors":"Yan Li, T. Zheng, Chuang Zhao, Rui Du, Quandong Wang","doi":"10.1109/IECON.2011.6119460","DOIUrl":"https://doi.org/10.1109/IECON.2011.6119460","url":null,"abstract":"In hybrid renewable power systems, the use of a multiple-input dc/dc converter (MIC) leads to simpler circuit and lower cost, compared to the conventional use of several single-input converters. This paper proposed a novel three-input buck/boost/buck-boost converter, which can be applied in all kinds of input voltage application. All the power sources in this converter can deliver power to the load either simultaneously or individually in one switching period. In addition, the steady relationship and power management strategy of this converter have been derived. Finally, three generating method of a multiple-input buck/boost/ buck-boost converter are given, and this method can be extended to the other multiple-input dc/dc converter.","PeriodicalId":105539,"journal":{"name":"IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127787900","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 : 2011-11-01DOI: 10.1109/IECON.2011.6119353
Likhita Gavini, A. Izadian, Lingxi Li
Buck-boost converters are non-minimum phase nonlinear circuits. Due to which there arises several constraints in selection of proper control approach. What is proposed in this paper is the application of a decoupling technique to isolate the non-minimum phase part of the system. The decoupled non-minimum phase transfer function dynamics are changed to minimum phase using a parallel compensator. Then the control action can be achieved by using a proportional gain controller. This method accelerates the transient response of the converter, removes the undershoot in the response and considerably reduces the oscillations in the transient response. Simulations demonstrate the effectiveness of the proposed control approach.
{"title":"A parallel compensation approach in controls of buck-boost converters","authors":"Likhita Gavini, A. Izadian, Lingxi Li","doi":"10.1109/IECON.2011.6119353","DOIUrl":"https://doi.org/10.1109/IECON.2011.6119353","url":null,"abstract":"Buck-boost converters are non-minimum phase nonlinear circuits. Due to which there arises several constraints in selection of proper control approach. What is proposed in this paper is the application of a decoupling technique to isolate the non-minimum phase part of the system. The decoupled non-minimum phase transfer function dynamics are changed to minimum phase using a parallel compensator. Then the control action can be achieved by using a proportional gain controller. This method accelerates the transient response of the converter, removes the undershoot in the response and considerably reduces the oscillations in the transient response. Simulations demonstrate the effectiveness of the proposed control approach.","PeriodicalId":105539,"journal":{"name":"IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society","volume":"2015 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128053471","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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