Pub Date : 2016-11-03DOI: 10.1109/IAS.2016.7731847
A. Khateb, M. Uddin, N. Rahim, B. Williams
This paper presents analysis and control of D converter, which has continuous input and output current to obtain maximum power transfer from a photovoltaic (PV) system. Examining the maximum power involves optimization and control techniques that ensure maximum power extraction enhancement. Traditional converters have rather high input ripple current that originates considerable loss of power extraction when linked to photovoltaic panels. Operating with zero input ripple current enlarges the power obtained from the PV panel without employing electrolytic capacitor. Experiment and simulation of the converter performance support and extol the system concept and establish a balanced view among several types of used controllers as well.
{"title":"A comparative study on D converter based on control schemes of maximum extracted power","authors":"A. Khateb, M. Uddin, N. Rahim, B. Williams","doi":"10.1109/IAS.2016.7731847","DOIUrl":"https://doi.org/10.1109/IAS.2016.7731847","url":null,"abstract":"This paper presents analysis and control of D converter, which has continuous input and output current to obtain maximum power transfer from a photovoltaic (PV) system. Examining the maximum power involves optimization and control techniques that ensure maximum power extraction enhancement. Traditional converters have rather high input ripple current that originates considerable loss of power extraction when linked to photovoltaic panels. Operating with zero input ripple current enlarges the power obtained from the PV panel without employing electrolytic capacitor. Experiment and simulation of the converter performance support and extol the system concept and establish a balanced view among several types of used controllers as well.","PeriodicalId":306377,"journal":{"name":"2016 IEEE Industry Applications Society Annual Meeting","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123241834","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 : 2016-11-02DOI: 10.1109/IAS.2016.7731862
R. Lin, Lung-Hua Huang
This paper presents the efficiency improvement on the comparative half-bridge LLC resonant converter using the integrated LCLC resonant transformer. Large leakage inductance is demanded for the conventional isolated LLC resonant converter to have high power factor of the resonant tank. However, large leakage inductance causes lower efficiency and the electromagnetic interference noise. In order to reduce the demanded leakage inductance of the LLC resonant transformer, a parallel resonant capacitor can be paralleled to the magnetizing inductor through the connection of an auxiliary winding as an LCLC resonant transformer. Finally, the resonant transformer of a 300W comparative LLC resonant converter is converted as an integrated LCLC resonant transformer for lower leakage inductance to improve the power conversion efficiency. Then, the DC-DC half-bridge converter with the integrated LCLC resonant converter is implemented and experimented to verify the power conversion efficiency rather than the comparative half-bridge converter with the LLC resonant transformer.
{"title":"Efficiency improvement on LLC resonant converter using integrated LCLC resonant transformer","authors":"R. Lin, Lung-Hua Huang","doi":"10.1109/IAS.2016.7731862","DOIUrl":"https://doi.org/10.1109/IAS.2016.7731862","url":null,"abstract":"This paper presents the efficiency improvement on the comparative half-bridge LLC resonant converter using the integrated LCLC resonant transformer. Large leakage inductance is demanded for the conventional isolated LLC resonant converter to have high power factor of the resonant tank. However, large leakage inductance causes lower efficiency and the electromagnetic interference noise. In order to reduce the demanded leakage inductance of the LLC resonant transformer, a parallel resonant capacitor can be paralleled to the magnetizing inductor through the connection of an auxiliary winding as an LCLC resonant transformer. Finally, the resonant transformer of a 300W comparative LLC resonant converter is converted as an integrated LCLC resonant transformer for lower leakage inductance to improve the power conversion efficiency. Then, the DC-DC half-bridge converter with the integrated LCLC resonant converter is implemented and experimented to verify the power conversion efficiency rather than the comparative half-bridge converter with the LLC resonant transformer.","PeriodicalId":306377,"journal":{"name":"2016 IEEE Industry Applications Society Annual Meeting","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121994262","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 : 2016-10-02DOI: 10.1109/IAS.2016.7731899
Jérémy Dulout, A. Barroso, L. Seguier, B. Jammes, P. Dupuis, G. Zissis, C. Alonso
Light emitting diodes (LEDs) are commonly expected to be the future of lighting because of a high luminous efficacy, a long lifetime and a high color rendering index (CRI). Nevertheless, the performance and the reliability of an LED are strongly dependent on the LED junction temperature. This paper presents a multi-objective methodology to find the optimal forward current subject to the annualized cost of the luminaire (initial capital cost, replacement cost, operation and maintenance cost...) and the annualized energy consumption. A simple LED model based on empirical data has been developed and takes into account optical, electrical, thermal and ageing behaviour. Three different white LEDs have been evaluated through several combinations of forward currents and heatsinks to satisfy a given mission profile. A set of optimal solutions has been determined by Pareto optimization.
{"title":"Multi-objective methodology to find the optimal forward current to supply light emitting diode (LED) lightings","authors":"Jérémy Dulout, A. Barroso, L. Seguier, B. Jammes, P. Dupuis, G. Zissis, C. Alonso","doi":"10.1109/IAS.2016.7731899","DOIUrl":"https://doi.org/10.1109/IAS.2016.7731899","url":null,"abstract":"Light emitting diodes (LEDs) are commonly expected to be the future of lighting because of a high luminous efficacy, a long lifetime and a high color rendering index (CRI). Nevertheless, the performance and the reliability of an LED are strongly dependent on the LED junction temperature. This paper presents a multi-objective methodology to find the optimal forward current subject to the annualized cost of the luminaire (initial capital cost, replacement cost, operation and maintenance cost...) and the annualized energy consumption. A simple LED model based on empirical data has been developed and takes into account optical, electrical, thermal and ageing behaviour. Three different white LEDs have been evaluated through several combinations of forward currents and heatsinks to satisfy a given mission profile. A set of optimal solutions has been determined by Pareto optimization.","PeriodicalId":306377,"journal":{"name":"2016 IEEE Industry Applications Society Annual Meeting","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122748723","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 : 2016-10-01DOI: 10.1109/IAS.2016.7731866
A. Berzoy, A. Mohamed, O. Mohammed
Inter-turn short-circuit (ITSC) fault is one of the most typical fault in different types of magnetically coupled circuits such as transformers and rotating or linear electrical machines. This paper presents a general study to approach the ITSC understanding and modeling as long as the circuit can be represented in state-space (SS) equations. The ITSC in any magnetically coupled windings can be accurately modelled by means of step-down autotransformer circuit in the faulty winding. Moreover, considerations about the leakage inductances estimation are studied and generalized. A case of study of ITSC is proposed: three-phase squirrel-cage induction machine. SS representation of the system is presented and simulated in MatLab environment by means of ODE and Simulink. Also, equivalent circuits derived from the SS representation are shown. For verification purposes Finite Element Analysis (FEA) and experimental test are conducted. A comparison between the proposed theoretical models, simulations and experimental results is performed.
{"title":"Inter-turn short-circuit fault model for magnetically coupled circuits: A general study","authors":"A. Berzoy, A. Mohamed, O. Mohammed","doi":"10.1109/IAS.2016.7731866","DOIUrl":"https://doi.org/10.1109/IAS.2016.7731866","url":null,"abstract":"Inter-turn short-circuit (ITSC) fault is one of the most typical fault in different types of magnetically coupled circuits such as transformers and rotating or linear electrical machines. This paper presents a general study to approach the ITSC understanding and modeling as long as the circuit can be represented in state-space (SS) equations. The ITSC in any magnetically coupled windings can be accurately modelled by means of step-down autotransformer circuit in the faulty winding. Moreover, considerations about the leakage inductances estimation are studied and generalized. A case of study of ITSC is proposed: three-phase squirrel-cage induction machine. SS representation of the system is presented and simulated in MatLab environment by means of ODE and Simulink. Also, equivalent circuits derived from the SS representation are shown. For verification purposes Finite Element Analysis (FEA) and experimental test are conducted. A comparison between the proposed theoretical models, simulations and experimental results is performed.","PeriodicalId":306377,"journal":{"name":"2016 IEEE Industry Applications Society Annual Meeting","volume":"15 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120852841","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 : 2016-10-01DOI: 10.1109/IAS.2016.7731845
X. Xi, H. Geng, Geng Yang
Large scale wind farms (WFs) are gradually required to participate in power system frequency regulation especially in a weak grid. Corresponding ancillary frequency control functionalities and the contribution of the WF to system frequency stability are well studied. However, the impact of WF ancillary frequency control on wind turbine generators (WTGs) is rarely considered. It is found in this paper that the ancillary frequency control deteriorates drive-train torsional oscillation of the WTG, which restricts application of the ancillary control. Therefore, the WF may not be able to fulfill grid code requirements. To overcome this problem, this paper proposes a damping control scheme based on reactive power modulation of the WTG to suppress drive-train torsional oscillation, which is beneficial to the WF to meet the grid code requirements. Moreover, superior to the traditional active power modulation method, the proposed control scheme can achieve satisfactory damping improvement with less control effort in a weak grid. Feasibility and effectiveness of the proposed damping control scheme are validated by simulations.
{"title":"Torsional oscillation damping control for DFIG-based wind farm participating in power system frequency regulation","authors":"X. Xi, H. Geng, Geng Yang","doi":"10.1109/IAS.2016.7731845","DOIUrl":"https://doi.org/10.1109/IAS.2016.7731845","url":null,"abstract":"Large scale wind farms (WFs) are gradually required to participate in power system frequency regulation especially in a weak grid. Corresponding ancillary frequency control functionalities and the contribution of the WF to system frequency stability are well studied. However, the impact of WF ancillary frequency control on wind turbine generators (WTGs) is rarely considered. It is found in this paper that the ancillary frequency control deteriorates drive-train torsional oscillation of the WTG, which restricts application of the ancillary control. Therefore, the WF may not be able to fulfill grid code requirements. To overcome this problem, this paper proposes a damping control scheme based on reactive power modulation of the WTG to suppress drive-train torsional oscillation, which is beneficial to the WF to meet the grid code requirements. Moreover, superior to the traditional active power modulation method, the proposed control scheme can achieve satisfactory damping improvement with less control effort in a weak grid. Feasibility and effectiveness of the proposed damping control scheme are validated by simulations.","PeriodicalId":306377,"journal":{"name":"2016 IEEE Industry Applications Society Annual Meeting","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125898556","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 : 2016-10-01DOI: 10.1109/IAS.2016.7731878
Mohammad Babakmehr, F. Harirchi, A. Alsaleem, A. Bubshait, Marcelo Simoes
In this work a bi-level (Supervisory-Local) PV-based Microgrid configuration is proposed for low power residential applications. In the supervisory level a long-term control scheme is assigned to define the set points for local controllers. The local level is mainly formed from a set of controllers which are basically responsible to control the power electronic interfaces and converters. Within the supervisory level a dynamic price scheduling framework with load and solar energy forecasting is implemented using time series-based regression technique. In the local level, adaptive double mode controllers are developed to realize intelligent inverters with smart grid-tied (GT) capabilities and smooth transition between GT and stand-alone modes. The effectiveness of the proposed architecture is examined using simulation in PSIM software. Next, hardware in the loop is implemented using the real time simulator OPAL-RT with DSP module as a controller for a board range of conditions and within different practical scenarios.
{"title":"Designing an intelligent low power residential PV-based Microgrid","authors":"Mohammad Babakmehr, F. Harirchi, A. Alsaleem, A. Bubshait, Marcelo Simoes","doi":"10.1109/IAS.2016.7731878","DOIUrl":"https://doi.org/10.1109/IAS.2016.7731878","url":null,"abstract":"In this work a bi-level (Supervisory-Local) PV-based Microgrid configuration is proposed for low power residential applications. In the supervisory level a long-term control scheme is assigned to define the set points for local controllers. The local level is mainly formed from a set of controllers which are basically responsible to control the power electronic interfaces and converters. Within the supervisory level a dynamic price scheduling framework with load and solar energy forecasting is implemented using time series-based regression technique. In the local level, adaptive double mode controllers are developed to realize intelligent inverters with smart grid-tied (GT) capabilities and smooth transition between GT and stand-alone modes. The effectiveness of the proposed architecture is examined using simulation in PSIM software. Next, hardware in the loop is implemented using the real time simulator OPAL-RT with DSP module as a controller for a board range of conditions and within different practical scenarios.","PeriodicalId":306377,"journal":{"name":"2016 IEEE Industry Applications Society Annual Meeting","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117093721","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 : 2016-10-01DOI: 10.1109/IAS.2016.7731868
A. Moghadasi, A. Sargolzaei, Arash Khalilnejad, M. Moghaddami, A. Sarwat
This paper presents the concept of the three-phase module-integrated converters (MICs) incorporated in grid-tied large-scale photovoltaic (PV) systems. The current-source converter (CSC) with dc voltage boost capability, namely single-stage power conversion system, is proposed for three-phase PV MIC system. A model predictive scheme with low switching frequency is designed to control the proposed topology in such a way that provides a certain amount of active and reactive power in steady-state operation and also provides a proper ratio of reactive power under transient conditions to meet the low voltage ride through (LVRT) regulations. To predict the future behavior of current control values and switching states, a discrete-time model of the MIC is developed in synchronous reference frame. It is demonstrated that the injected active and reactive power can be controlled using minimizing the cost function introduced in the predictive switching algorithm. The proposed structure is simulated in MATLAB/SIMULINK software. The results verify the desired performance of the proposed control scheme for exchanging of both active and reactive powers between the PV MIC and the grid within different operating conditions.
{"title":"Model predictive power control approach for three-phase single-stage grid-tied PV module-integrated converter","authors":"A. Moghadasi, A. Sargolzaei, Arash Khalilnejad, M. Moghaddami, A. Sarwat","doi":"10.1109/IAS.2016.7731868","DOIUrl":"https://doi.org/10.1109/IAS.2016.7731868","url":null,"abstract":"This paper presents the concept of the three-phase module-integrated converters (MICs) incorporated in grid-tied large-scale photovoltaic (PV) systems. The current-source converter (CSC) with dc voltage boost capability, namely single-stage power conversion system, is proposed for three-phase PV MIC system. A model predictive scheme with low switching frequency is designed to control the proposed topology in such a way that provides a certain amount of active and reactive power in steady-state operation and also provides a proper ratio of reactive power under transient conditions to meet the low voltage ride through (LVRT) regulations. To predict the future behavior of current control values and switching states, a discrete-time model of the MIC is developed in synchronous reference frame. It is demonstrated that the injected active and reactive power can be controlled using minimizing the cost function introduced in the predictive switching algorithm. The proposed structure is simulated in MATLAB/SIMULINK software. The results verify the desired performance of the proposed control scheme for exchanging of both active and reactive powers between the PV MIC and the grid within different operating conditions.","PeriodicalId":306377,"journal":{"name":"2016 IEEE Industry Applications Society Annual Meeting","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128732151","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 : 2016-10-01DOI: 10.1109/IAS.2016.7731945
Chengfu Wang, Zhe Li, Jun Liang, Jinyu Wang, Ming Yang, Xiaoming Dong
With large scale wind farm integration, the effect of wind farm dynamic equivalent model accuracy is increasing on power system dynamic and transient stability, so the traditional equivalent and multi-group method can't meet requirement of some studies. Therefore, due to the deficiency of traditional wind farm equivalent method, a new multi-group method is proposed in this paper. Wind farms dispersity and wind turbines difference have been both considered in this method. When grouping wind farm turbines, based on that, a modified wind farm dynamic equivalent model is proposed using coherency method. For the contrastive analysis, three traditional equivalent models are built too, and simulated research of single, two and three phases short circuit is proceeded. Using relative error index of active power, reactive power and bus voltage, dynamic characteristics contrastive analysis of four equivalent models including the proposed model is preceded too. The superiority of this proposed method is verified by simulation results, and dynamic characteristics of the proposed model located on the parallel point are more close to that of real wind farm.
{"title":"A dynamic equivalent method of wind farm considering wind farm dispersity and wind turbine difference","authors":"Chengfu Wang, Zhe Li, Jun Liang, Jinyu Wang, Ming Yang, Xiaoming Dong","doi":"10.1109/IAS.2016.7731945","DOIUrl":"https://doi.org/10.1109/IAS.2016.7731945","url":null,"abstract":"With large scale wind farm integration, the effect of wind farm dynamic equivalent model accuracy is increasing on power system dynamic and transient stability, so the traditional equivalent and multi-group method can't meet requirement of some studies. Therefore, due to the deficiency of traditional wind farm equivalent method, a new multi-group method is proposed in this paper. Wind farms dispersity and wind turbines difference have been both considered in this method. When grouping wind farm turbines, based on that, a modified wind farm dynamic equivalent model is proposed using coherency method. For the contrastive analysis, three traditional equivalent models are built too, and simulated research of single, two and three phases short circuit is proceeded. Using relative error index of active power, reactive power and bus voltage, dynamic characteristics contrastive analysis of four equivalent models including the proposed model is preceded too. The superiority of this proposed method is verified by simulation results, and dynamic characteristics of the proposed model located on the parallel point are more close to that of real wind farm.","PeriodicalId":306377,"journal":{"name":"2016 IEEE Industry Applications Society Annual Meeting","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129668286","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 : 2016-10-01DOI: 10.1109/IAS.2016.7731859
S. Narula, Bhim Singh, G. Bhuvaneswari, A. Chandra, K. Al-haddad
In this paper, a single-phase power quality improved switched-mode power supply (SMPS) using bridgeless (BL) canonical switching cell (CSC) converter is analyzed, designed and experimentally tested for welding applications. The elimination of diode bridge rectifier (DBR) at the input leads to reduced conduction losses and high power density thereby improving thermal management. BL-CSC converter functions in discontinuous inductor current mode (DICM) to naturally realize high power factor (PF) with low total harmonic distortion (THD) in the input current. Other benefits include simple control circuitry, high efficiency and low electromagnetic-interference noise. BL-CSC converter is then connected to isolated full bridge (FB) converter modules, which are arranged to increase the overall current rating of the proposed arc welding power supply (AWPS). The controller for the proposed AWPS aims to regulate the DC voltage at the output as well as to limit the current at the load end, so as to make it suitable for welding applications. Theoretical analysis and experimental results for a 1.75kW AWPS are elucidated to investigate the behavior of the proposed configuration. The proposed topology is compared with conventional schemes in terms of efficiency, THD and PF. Test results are conferred to corroborate the efficacy of proposed SMPS for arc welding applications.
{"title":"Power quality improved SMPS using BL-CSC converter for welding applications","authors":"S. Narula, Bhim Singh, G. Bhuvaneswari, A. Chandra, K. Al-haddad","doi":"10.1109/IAS.2016.7731859","DOIUrl":"https://doi.org/10.1109/IAS.2016.7731859","url":null,"abstract":"In this paper, a single-phase power quality improved switched-mode power supply (SMPS) using bridgeless (BL) canonical switching cell (CSC) converter is analyzed, designed and experimentally tested for welding applications. The elimination of diode bridge rectifier (DBR) at the input leads to reduced conduction losses and high power density thereby improving thermal management. BL-CSC converter functions in discontinuous inductor current mode (DICM) to naturally realize high power factor (PF) with low total harmonic distortion (THD) in the input current. Other benefits include simple control circuitry, high efficiency and low electromagnetic-interference noise. BL-CSC converter is then connected to isolated full bridge (FB) converter modules, which are arranged to increase the overall current rating of the proposed arc welding power supply (AWPS). The controller for the proposed AWPS aims to regulate the DC voltage at the output as well as to limit the current at the load end, so as to make it suitable for welding applications. Theoretical analysis and experimental results for a 1.75kW AWPS are elucidated to investigate the behavior of the proposed configuration. The proposed topology is compared with conventional schemes in terms of efficiency, THD and PF. Test results are conferred to corroborate the efficacy of proposed SMPS for arc welding applications.","PeriodicalId":306377,"journal":{"name":"2016 IEEE Industry Applications Society Annual Meeting","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123346930","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 : 2016-10-01DOI: 10.1109/IAS.2016.7731900
G. Z. Abdelmessih, José Marcos Alonso Alvarez
This Paper presents a double integrated converter used for light emitted diode (LED) lighting applications, with the additional feature of the pulse width modulation (PWM) as a dimming technique. The double integration is made by integrating a Buck converter at the output of the Integrated Buck-Flyback Converter (IBFC) to be the Integrated Buck-Flyback-Buck Converter (IBFBC). This additional converter role is to deliver the remaining of the dimming power back to the input, as the flyback could be considered as a power source, therefore in case of dimming in order to keep the power delivered by the flyback constant the additional Buck send the remaining power back to input. The new converter combines the improvements in the operational performance of the Hybrid-Series-Parallel (HSP) PWM dimming technic presented in a previous work, with insuring a higher level of efficiency. The work presents an average model as well as a mathematical model for the full IBFBC, in order to well explain the power flow of this double integrated converter, and decrease the switching devices complications. Finally, a prototype is made in order to confirm the results exported from the simulations with experimental results, these results are well analyzed so that the improvement gained from this converter is illustrated.
{"title":"A new active Hybrid-Series-Parallel PWM dimming scheme for off-line integrated LED drivers with high efficiency and fast dynamics","authors":"G. Z. Abdelmessih, José Marcos Alonso Alvarez","doi":"10.1109/IAS.2016.7731900","DOIUrl":"https://doi.org/10.1109/IAS.2016.7731900","url":null,"abstract":"This Paper presents a double integrated converter used for light emitted diode (LED) lighting applications, with the additional feature of the pulse width modulation (PWM) as a dimming technique. The double integration is made by integrating a Buck converter at the output of the Integrated Buck-Flyback Converter (IBFC) to be the Integrated Buck-Flyback-Buck Converter (IBFBC). This additional converter role is to deliver the remaining of the dimming power back to the input, as the flyback could be considered as a power source, therefore in case of dimming in order to keep the power delivered by the flyback constant the additional Buck send the remaining power back to input. The new converter combines the improvements in the operational performance of the Hybrid-Series-Parallel (HSP) PWM dimming technic presented in a previous work, with insuring a higher level of efficiency. The work presents an average model as well as a mathematical model for the full IBFBC, in order to well explain the power flow of this double integrated converter, and decrease the switching devices complications. Finally, a prototype is made in order to confirm the results exported from the simulations with experimental results, these results are well analyzed so that the improvement gained from this converter is illustrated.","PeriodicalId":306377,"journal":{"name":"2016 IEEE Industry Applications Society Annual Meeting","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121176157","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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