Pub Date : 2019-12-01DOI: 10.1109/COBEP/SPEC44138.2019.9065719
R. P. Dacol, Joselito Anastácio Heerdt, G. Waltrich
In this paper a unidirectional non-isolated high current battery charger with power factor correction (PFC) is proposed. The structure of the battery charger is divided in two parts: a bridgeless PFC at the input stage and a interleaved Buck converter at the output stage. The structure uses multi-interfase transformer, to allow the magnetic volume reduction, and a bridgeless PFC rectifier to reduce the number of components. This paper presents the converter operational stage analysis, control and simulation results.For a 48V battery with 32A constant current of charging, the proposed converter reached a power factor of 0.9938.
{"title":"Non-Isolated High Current Battery Charger with PFC Semi-Bridgeless Rectifier","authors":"R. P. Dacol, Joselito Anastácio Heerdt, G. Waltrich","doi":"10.1109/COBEP/SPEC44138.2019.9065719","DOIUrl":"https://doi.org/10.1109/COBEP/SPEC44138.2019.9065719","url":null,"abstract":"In this paper a unidirectional non-isolated high current battery charger with power factor correction (PFC) is proposed. The structure of the battery charger is divided in two parts: a bridgeless PFC at the input stage and a interleaved Buck converter at the output stage. The structure uses multi-interfase transformer, to allow the magnetic volume reduction, and a bridgeless PFC rectifier to reduce the number of components. This paper presents the converter operational stage analysis, control and simulation results.For a 48V battery with 32A constant current of charging, the proposed converter reached a power factor of 0.9938.","PeriodicalId":69617,"journal":{"name":"电力电子","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82886871","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 : 2019-12-01DOI: 10.1109/COBEP/SPEC44138.2019.9065455
Shili Huang, Haoran Wang, D. Kumar, G. Zhu, Huai Wang
This paper studies the reliability of DC-Link capacitor in multiple slim drives system. In order to obtain the electro-thermal stress of capacitor in individual drive simply and accurately, a time-efficient equivalent model and its analytical model for multiple slim drives system is proposed. Based on the proposed equivalent circuit model and the existing lifetime prediction method, the impact of drive numbers on the reliability of DC-link capacitor in multiple slim drives is analyzed. The results serve as a guideline for capacitor sizing in multiple slim drives system from reliability aspect.
{"title":"Lifetime Investigation of DC-link Capacitors in Multiple Slim Drives System","authors":"Shili Huang, Haoran Wang, D. Kumar, G. Zhu, Huai Wang","doi":"10.1109/COBEP/SPEC44138.2019.9065455","DOIUrl":"https://doi.org/10.1109/COBEP/SPEC44138.2019.9065455","url":null,"abstract":"This paper studies the reliability of DC-Link capacitor in multiple slim drives system. In order to obtain the electro-thermal stress of capacitor in individual drive simply and accurately, a time-efficient equivalent model and its analytical model for multiple slim drives system is proposed. Based on the proposed equivalent circuit model and the existing lifetime prediction method, the impact of drive numbers on the reliability of DC-link capacitor in multiple slim drives is analyzed. The results serve as a guideline for capacitor sizing in multiple slim drives system from reliability aspect.","PeriodicalId":69617,"journal":{"name":"电力电子","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84682010","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 : 2019-12-01DOI: 10.1109/COBEP/SPEC44138.2019.9065822
L. C. Souza, F. D. de Seixas, Luis De Oro Arenas, Douglas Carvalho Morais, Luciano de Souza da Costa e Silva
This paper presents a boost converter based on the three-state switching cell (3SSC), which has been widely used in the design of several topologies of electronic power converters. The structure is part of a family of non-isolated DC-DC converters that has been reported previously in the literature, however, detailed modeling and analysis have not been presented before. The topology consists of type-A cell, one of the five variants of 3SSC. This structure has the advantages associated to the use of 3SSC, such as reduction of the current stress in semiconductors and distribution of losses on them. A qualitative analysis in continuous conduction mode is performed, the control pulses of the main switches being non-overlapping, the operational stages are analyzed and a design procedure is obtained. The modeling of the topology is performed, obtaining the small-signal model of the converter. Experimental results are presented and duly discussed to validate the theoretical assumptions.
{"title":"A Non-Isolated DC-DC Boost Converter with Three-State Switching Cell","authors":"L. C. Souza, F. D. de Seixas, Luis De Oro Arenas, Douglas Carvalho Morais, Luciano de Souza da Costa e Silva","doi":"10.1109/COBEP/SPEC44138.2019.9065822","DOIUrl":"https://doi.org/10.1109/COBEP/SPEC44138.2019.9065822","url":null,"abstract":"This paper presents a boost converter based on the three-state switching cell (3SSC), which has been widely used in the design of several topologies of electronic power converters. The structure is part of a family of non-isolated DC-DC converters that has been reported previously in the literature, however, detailed modeling and analysis have not been presented before. The topology consists of type-A cell, one of the five variants of 3SSC. This structure has the advantages associated to the use of 3SSC, such as reduction of the current stress in semiconductors and distribution of losses on them. A qualitative analysis in continuous conduction mode is performed, the control pulses of the main switches being non-overlapping, the operational stages are analyzed and a design procedure is obtained. The modeling of the topology is performed, obtaining the small-signal model of the converter. Experimental results are presented and duly discussed to validate the theoretical assumptions.","PeriodicalId":69617,"journal":{"name":"电力电子","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83116984","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 : 2019-12-01DOI: 10.1109/COBEP/SPEC44138.2019.9065363
Yago F. Oliveira, Filipe A. La-Gatta, R. A. Ferreira, M. Rodrigues
This work presents the development of a real-time simulation system based on field-programmable gate array (FPGA). Detailed information regarding the implementation of the proposed real-time simulator (RTS) is presented. A current bidirectional boost converter is considered in order to illustrate the proposed methodology for power converter modeling and implementation of RTS equation solver. The comparison between obtained results and offline commercial simulation is conducted to validate the proposed RTS. The proposed RTS can be used as a low-cost alternative to commercial platforms to perform real-time simulations of power electronic converters.
{"title":"Development of a FPGA-Based Real-Time Simulation System","authors":"Yago F. Oliveira, Filipe A. La-Gatta, R. A. Ferreira, M. Rodrigues","doi":"10.1109/COBEP/SPEC44138.2019.9065363","DOIUrl":"https://doi.org/10.1109/COBEP/SPEC44138.2019.9065363","url":null,"abstract":"This work presents the development of a real-time simulation system based on field-programmable gate array (FPGA). Detailed information regarding the implementation of the proposed real-time simulator (RTS) is presented. A current bidirectional boost converter is considered in order to illustrate the proposed methodology for power converter modeling and implementation of RTS equation solver. The comparison between obtained results and offline commercial simulation is conducted to validate the proposed RTS. The proposed RTS can be used as a low-cost alternative to commercial platforms to perform real-time simulations of power electronic converters.","PeriodicalId":69617,"journal":{"name":"电力电子","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83119614","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 : 2019-12-01DOI: 10.1109/COBEP/SPEC44138.2019.9065637
Lei Wang, U. Madawala, M. Wong
More and more consumer applications are powered using wireless power transfer (WPT) technology. This paper proposes a low cost WPT system for consumer applications that require bi-directional power flow. The proposed system uses two switches to regulate the wireless power flow in both directions. A mathematical model is presented, describing the different modes of operation of the WPT system. To validate the applicability of the proposed concept, both simulated and measured results are presented.
{"title":"A Low Cost Bi-directional Wireless Power Transfer System","authors":"Lei Wang, U. Madawala, M. Wong","doi":"10.1109/COBEP/SPEC44138.2019.9065637","DOIUrl":"https://doi.org/10.1109/COBEP/SPEC44138.2019.9065637","url":null,"abstract":"More and more consumer applications are powered using wireless power transfer (WPT) technology. This paper proposes a low cost WPT system for consumer applications that require bi-directional power flow. The proposed system uses two switches to regulate the wireless power flow in both directions. A mathematical model is presented, describing the different modes of operation of the WPT system. To validate the applicability of the proposed concept, both simulated and measured results are presented.","PeriodicalId":69617,"journal":{"name":"电力电子","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84647075","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 : 2019-12-01DOI: 10.1109/COBEP/SPEC44138.2019.9065896
Richard G. Cornelius, Amanda C. Maia, Matheos C. Wermuth, Guilherme S. da Silva
The I-V curve is an important parameter, because it contains the PV module characteristics. It shows what happens in the module due to external variations. This paper presents a method to trace the photovoltaic curves with reverse voltage under partial shading conditions. In addition, it mentions the effects of the bypass diode. Lastly, it makes comparisons between curves of shaded and unshaded modules and the shunt resistance effect.
{"title":"Method to trace the photovoltaic characteristic curve with reverse voltage for shading conditions","authors":"Richard G. Cornelius, Amanda C. Maia, Matheos C. Wermuth, Guilherme S. da Silva","doi":"10.1109/COBEP/SPEC44138.2019.9065896","DOIUrl":"https://doi.org/10.1109/COBEP/SPEC44138.2019.9065896","url":null,"abstract":"The I-V curve is an important parameter, because it contains the PV module characteristics. It shows what happens in the module due to external variations. This paper presents a method to trace the photovoltaic curves with reverse voltage under partial shading conditions. In addition, it mentions the effects of the bypass diode. Lastly, it makes comparisons between curves of shaded and unshaded modules and the shunt resistance effect.","PeriodicalId":69617,"journal":{"name":"电力电子","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84592662","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 : 2019-12-01DOI: 10.1109/COBEP/SPEC44138.2019.9065854
R. Neto, F. Neves, E. V. Stangler, F. Bradaschia, H. D. de Souza
The repetitive controller (RC) represents a very effective solution for the current control of shunt active power filters. Using this structure as basis, several authors have proposed harmonic selective schemes that are more advantageous than the conventional RC when the control system references only contain a well-known family of harmonic components, such as 6k ± 1 or 4k ± 1 (all odd). In this sense, this paper presents a structural and performance comparison between real and complex harmonic selective RC-based solutions. Experimental results were used to validated the comparative study.
{"title":"Structural and Performance Comparison Between Harmonic Selective Repetitive Controllers for Shunt Active Power Filter","authors":"R. Neto, F. Neves, E. V. Stangler, F. Bradaschia, H. D. de Souza","doi":"10.1109/COBEP/SPEC44138.2019.9065854","DOIUrl":"https://doi.org/10.1109/COBEP/SPEC44138.2019.9065854","url":null,"abstract":"The repetitive controller (RC) represents a very effective solution for the current control of shunt active power filters. Using this structure as basis, several authors have proposed harmonic selective schemes that are more advantageous than the conventional RC when the control system references only contain a well-known family of harmonic components, such as 6k ± 1 or 4k ± 1 (all odd). In this sense, this paper presents a structural and performance comparison between real and complex harmonic selective RC-based solutions. Experimental results were used to validated the comparative study.","PeriodicalId":69617,"journal":{"name":"电力电子","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86276667","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 : 2019-12-01DOI: 10.1109/COBEP/SPEC44138.2019.9065576
Marcus Vieira Soares, G. Lambert, Y. Rômulo de Novaes
Different types of dc-dc converters have been subject of research to fulfill the need of interconnecting renewable generation sources, existing or new grids, electronic loads and battery based systems. To deal with high voltage levels and high power, Modular Multilevel Converter based structures have been proposed. On the other hand, for lower power ratings, Switched Capacitor and Hybrid Switched Capacitor converters have emerged due to their simple structures and self voltage balancing characteristics. In this scenario, a non-isolated Hybrid Switched Capacitor dc-dc converter based on Modular Multilevel Converter is proposed and its unidirectional structure is examined through circuit analysis. In the proposed converter, the voltage static gain is independent of the number of submodules, allowing a good regulation range of the output voltage for high voltage applications. Moreover, the Switched Capacitor behavior provides automatic clamp of the arms voltages, avoiding the need of ac loops to perform the arms voltage balance. A converter design methodology based on current spikes limitation is also proposed. All the theoretical analysis and the design methodology are validated through comparisons with simulated waveforms.
{"title":"Hybrid Switched Capacitor DC-DC Converter Based On MMC","authors":"Marcus Vieira Soares, G. Lambert, Y. Rômulo de Novaes","doi":"10.1109/COBEP/SPEC44138.2019.9065576","DOIUrl":"https://doi.org/10.1109/COBEP/SPEC44138.2019.9065576","url":null,"abstract":"Different types of dc-dc converters have been subject of research to fulfill the need of interconnecting renewable generation sources, existing or new grids, electronic loads and battery based systems. To deal with high voltage levels and high power, Modular Multilevel Converter based structures have been proposed. On the other hand, for lower power ratings, Switched Capacitor and Hybrid Switched Capacitor converters have emerged due to their simple structures and self voltage balancing characteristics. In this scenario, a non-isolated Hybrid Switched Capacitor dc-dc converter based on Modular Multilevel Converter is proposed and its unidirectional structure is examined through circuit analysis. In the proposed converter, the voltage static gain is independent of the number of submodules, allowing a good regulation range of the output voltage for high voltage applications. Moreover, the Switched Capacitor behavior provides automatic clamp of the arms voltages, avoiding the need of ac loops to perform the arms voltage balance. A converter design methodology based on current spikes limitation is also proposed. All the theoretical analysis and the design methodology are validated through comparisons with simulated waveforms.","PeriodicalId":69617,"journal":{"name":"电力电子","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77687726","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 : 2019-12-01DOI: 10.1109/COBEP/SPEC44138.2019.9065839
S. A. Teston, Kaio Vinícius Vilerá, M. Mezaroba, C. Rech
This paper proposes a feedforward control to mitigate the low-frequency current ripple in the secondary dc port current of the three-ports active neutral-point-clamped converter (ANPC-3P). This low-frequency current ripple is caused by the low-frequency voltage ripple at the inverter dc buses. Current ripple is an important design parameter for energy storage systems (ESS) and must be kept low to extend the ESS life cycle. Low-frequency current ripple is difficult to filter and thereby it should be avoided. In this paper, ESS current control system is composed of a proportional-integral (PI) controller associated with a proposed feedforward action. This control scheme is capable of generating a dc current without low-frequency ripple. The ac output current (grid current) is controlled by a resonant controller. The theoretical propositions are validated by simulation results.
{"title":"Feedforward Compensation of the ESS Low-Frequency Current Ripple in the Three-Ports ANPC Converter","authors":"S. A. Teston, Kaio Vinícius Vilerá, M. Mezaroba, C. Rech","doi":"10.1109/COBEP/SPEC44138.2019.9065839","DOIUrl":"https://doi.org/10.1109/COBEP/SPEC44138.2019.9065839","url":null,"abstract":"This paper proposes a feedforward control to mitigate the low-frequency current ripple in the secondary dc port current of the three-ports active neutral-point-clamped converter (ANPC-3P). This low-frequency current ripple is caused by the low-frequency voltage ripple at the inverter dc buses. Current ripple is an important design parameter for energy storage systems (ESS) and must be kept low to extend the ESS life cycle. Low-frequency current ripple is difficult to filter and thereby it should be avoided. In this paper, ESS current control system is composed of a proportional-integral (PI) controller associated with a proposed feedforward action. This control scheme is capable of generating a dc current without low-frequency ripple. The ac output current (grid current) is controlled by a resonant controller. The theoretical propositions are validated by simulation results.","PeriodicalId":69617,"journal":{"name":"电力电子","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72620829","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 : 2019-12-01DOI: 10.1109/COBEP/SPEC44138.2019.9065902
Kevin E. Lucas, D. Pagano, R. L. Medeiros
This paper presents the design and evaluation of a robust controller, based on linear programming, Kharitonov’s theorem and Chebyshev’s theorem, in order to regulate the output voltage of the Dual Active Bridge (DAB) converter under parametric uncertainties. These robust control approach take into account all possible uncertainties in the system such as load and input voltage variations, improving the system performance. The converter is controlled by single phase-shift-modulation (PSM) with a fixed duty cycle. The proposed controller ensures robust control performance and stability with a minor performance degradation compared to an interval robust controller and a conventional controller. Simulation results are presented to validate the robustness and effectiveness of the proposed controller.
{"title":"Single Phase-Shift Control of DAB Converter using Robust Parametric Approach","authors":"Kevin E. Lucas, D. Pagano, R. L. Medeiros","doi":"10.1109/COBEP/SPEC44138.2019.9065902","DOIUrl":"https://doi.org/10.1109/COBEP/SPEC44138.2019.9065902","url":null,"abstract":"This paper presents the design and evaluation of a robust controller, based on linear programming, Kharitonov’s theorem and Chebyshev’s theorem, in order to regulate the output voltage of the Dual Active Bridge (DAB) converter under parametric uncertainties. These robust control approach take into account all possible uncertainties in the system such as load and input voltage variations, improving the system performance. The converter is controlled by single phase-shift-modulation (PSM) with a fixed duty cycle. The proposed controller ensures robust control performance and stability with a minor performance degradation compared to an interval robust controller and a conventional controller. Simulation results are presented to validate the robustness and effectiveness of the proposed controller.","PeriodicalId":69617,"journal":{"name":"电力电子","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74692068","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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