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Stacked Bidirectional Boost DC-DC Converter 堆叠双向升压DC-DC变换器
2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684060
Fabiano Gonzales Nimitti, António Manuel Santos Spencer Andrade, J. C. Giacomini
{"title":"Stacked Bidirectional Boost DC-DC Converter","authors":"Fabiano Gonzales Nimitti, António Manuel Santos Spencer Andrade, J. C. Giacomini","doi":"10.1109/COBEP53665.2021.9684060","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684060","url":null,"abstract":"A new non-isolated bidirectional DC-DC converter with low voltage and current stresses across the semiconductor devices is presented in this paper. The proposed converter is a combination of stacked bidirectional boost converter. The converter present different operations mode, such as: synchronous and asynchronous. These modes can reduce the current ripple of the voltage source, decrease the current stress across the semiconductors, which decrease the power conduction losses. Besides that, in this paper the modeling and control of the proposed converter is done. To validate the characteristics of the converter, simulated and practical results are presented","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"248 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120989024","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}
引用次数: 1
Contributions on Sliding-Mode Control Approach Applied for Single-Phase Grid-Connected Voltage Source Inverters 滑模控制方法在单相并网电压源逆变器中的应用
2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684038
Alan Rodrigues de Sousa, Ricardo Lúcio de Araújo Ribeiro, Thiago de Oliveira Alves Rocha
{"title":"Contributions on Sliding-Mode Control Approach Applied for Single-Phase Grid-Connected Voltage Source Inverters","authors":"Alan Rodrigues de Sousa, Ricardo Lúcio de Araújo Ribeiro, Thiago de Oliveira Alves Rocha","doi":"10.1109/COBEP53665.2021.9684038","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684038","url":null,"abstract":"This paper presents a sliding-mode control (SMC) strategy applied for single-phase grid-connected voltage source inverters (VSIs). The proposed SMC employs linear systems analytic tools to determine the closed-loop poles' suitable location, using a simplified structure for implementing the inner current control loop. Besides, the sliding surface definition considers the output voltage measurement. Simulation results obtained from a single-phase grid-tied VSI operating under different operational conditions demonstrate the effectiveness proposed solution. Also, a comparison between the SMC control and a Proportional-Integral (PI) controller was performed to demonstrate the proposed solution robustness.","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"113 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127156030","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}
引用次数: 0
Hardware-in-the-Loop Low Voltage Fault Ride Through Tests of Commercial Photovoltaic Inverters 商用光伏逆变器的硬件在环低压故障穿越试验
2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684133
Luiz Fernando R. Menegazzo, Anderson L.N. Severo, Ricardo J. F. Bortolini, Henrique Magnago, F. Carnielutti, L. Bellinaso, L. Michels, H. Pinheiro
{"title":"Hardware-in-the-Loop Low Voltage Fault Ride Through Tests of Commercial Photovoltaic Inverters","authors":"Luiz Fernando R. Menegazzo, Anderson L.N. Severo, Ricardo J. F. Bortolini, Henrique Magnago, F. Carnielutti, L. Bellinaso, L. Michels, H. Pinheiro","doi":"10.1109/COBEP53665.2021.9684133","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684133","url":null,"abstract":"Due to the increase in the installed power of dis-tributed photovoltaic generation, this paper proposes a method-ology for pre-certification of the firmware of commercial PV inverters, where the power circuit and the test equipment are emulated in HIL, while the control of the PV inverter is done externally with a microcontroller. This paper describes the proposed pre-certification process and how the tests are performed in an automated way using Python scripts and HIL. The paper focuses on the Low Voltage Fault Ride Through, LVFRT, tests and the possible problems that can be caused if the PV inverter does not meet the requirements for supporting grid faults. Finally, experimental results for the LVFRT tests are presented to demonstrate and validate the proposed pre-certification process. The main goal of this methodology is to accelerate the development of commercial PV inverters, providing manufacturers with reliable results on how the real inverter should behave.","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124816824","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}
引用次数: 0
Virtual Learning Process in the degree of renewable energies at University of Chubut with Typhoon HIL Control Center 台风HIL控制中心在楚布特大学可再生能源学位的虚拟学习过程
2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684043
T. Hernandez
{"title":"Virtual Learning Process in the degree of renewable energies at University of Chubut with Typhoon HIL Control Center","authors":"T. Hernandez","doi":"10.1109/COBEP53665.2021.9684043","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684043","url":null,"abstract":"This paper describes a virtual laboratory design associated to photovoltaic energy source in residential load connected in mode on grid, which its main goal was that the students of renewables energies in the University of Chubut would be able to control, monitor and validate electrical variable as current, voltage, power and frequency; with this tool the students have a best professional practice applied to small residential generator user based in a model made in Typhoon HIL Control Center.","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123698875","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}
引用次数: 0
Behavior Analysis of PV Modules Subjected to High-Frequency Current Ripples 高频电流波纹作用下光伏组件的性能分析
2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684010
I. D. S. Junior, F. Antunes, E. M. Sá
{"title":"Behavior Analysis of PV Modules Subjected to High-Frequency Current Ripples","authors":"I. D. S. Junior, F. Antunes, E. M. Sá","doi":"10.1109/COBEP53665.2021.9684010","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684010","url":null,"abstract":"In this paper, the behavior of the photovoltaic module (PV) when connected to switched circuits is verified. The switched circuits drain non-pure DC and cause oscillations that are reflected in the generated energy. Initially, the PV dynamic model and reverse bias characteristics were considered. These characteristics affect operate of the PV module in cases of shading, faults, and high-frequency applications. From this, a approximated photovoltaic model was proposed. DC and AC sources were used to reproduce the drained current. These sources were configured with current values close to the MPP. This study developed a mathematical analysis of the proposed model based on the dynamic characteristics and the use of a filter capacitor at the module output. A simulation was performed using PSIM® software with the characteristics of a 210-Wp PV module. The generated photovoltaic current oscillations were verified according to the use of filter capacitance. In which it was calculated from the small-signal AC analysis of the proposed approximated PV model. The output power ripple of the module was analyzed.","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115085815","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}
引用次数: 0
Synchronization and Reconnection of Islanded Microgrids 孤岛微电网的同步与重连接
2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684124
Paula Stael Silva Barbosa, R. P. Mota, J. G. de Oliveira
{"title":"Synchronization and Reconnection of Islanded Microgrids","authors":"Paula Stael Silva Barbosa, R. P. Mota, J. G. de Oliveira","doi":"10.1109/COBEP53665.2021.9684124","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684124","url":null,"abstract":"Microgrids can be defined as integrated systems that involve distributed energy resources and several electrical loads operating as an autonomous network, either in parallel or isolated from the main electrical network. One of the major challenges in the operation of the microgrids is the reconnecting to the grid after the islanding operation. For the reconnection of the two subsystems to occur, it is necessary that their terminal voltages are synchronized and this topic deals with a methodology which is still little explored in the literature. In this context, this work presents the implementation of an automated microgrid, in which the occurrence of islanding is detected and later the resynchronization process with the main network is performed. Through the results achieved, the efficacy of the implemented resynchronization method was shown, performing the process of reconnecting the microgrid smoothly, in accordance with the established by the IEEE-Std 1547-2003 standard.","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116025788","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}
引用次数: 0
Single Switch High Step-Up Soft-Switching Boost Converter with Coupled Inductor 带耦合电感的单开关高升压软开关升压变换器
2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684112
Jelais Jean Francois, A. Andrade, F. Bisogno
{"title":"Single Switch High Step-Up Soft-Switching Boost Converter with Coupled Inductor","authors":"Jelais Jean Francois, A. Andrade, F. Bisogno","doi":"10.1109/COBEP53665.2021.9684112","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684112","url":null,"abstract":"In this paper, a soft-switching boost converter with coupled inductor and a resonant tank is proposed. From this, the switching frequency can be increased without compromising the efficiency of the converter, and consequently the volume, the size and the cost of the components will decrease. To demonstrate the advantage and validate the theoretical evaluation of the proposed converter, such as; simplicity of operation, low components count, single switch, low voltage stress across the components. In this digest, simulation results of $V_{i}=37.4mathrm{V}, V_{o}=400mathrm{V}$ and $f_{s}=100text{kHz}$ are presented.","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114498159","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}
引用次数: 0
DC-DC AND DC-AC Parallel Switched-Linear Converters DC-DC和DC-AC并联开关-线性变换器
2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684080
N. Rigo, J. R. Pinheiro, Dalton L. R. Vidor
{"title":"DC-DC AND DC-AC Parallel Switched-Linear Converters","authors":"N. Rigo, J. R. Pinheiro, Dalton L. R. Vidor","doi":"10.1109/COBEP53665.2021.9684080","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684080","url":null,"abstract":"This paper presents two voltage source converters (VSC) that were designed by joining a switching converter and a linear amplifier connected in parallel. The advantage of this structure is that it mix the best characteristics of the two converters. The lifetime is increased by removing the output capacitor. Other features of the converters include quick responses to load transients, very low ripple, high efficiency, high fidelity and reliability of the output voltage. This paper will present a DC-DC and a DC-AC structures that are connected in parallel with a linear amplifier. The DC-AC proposed system divides currents in the converters into the desired proportions, implements overcurrent protections, mitigates the circulating currents, provides the selection of the current band that each group of converters operates and minimizes losses.","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129234515","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}
引用次数: 1
Composite DC-DC Converter with Bipolar/bidirectional Current-Fed Push-pull Voltage Regulator 具有双极/双向电流型推挽式稳压器的复合DC-DC变换器
2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684135
Tiago Miguel Klein Faistel, Henrique Jank, Gustavo Colpes Ribeiro, M. L. da Silva Martins, Luiz Antonio Correa Lopes
{"title":"Composite DC-DC Converter with Bipolar/bidirectional Current-Fed Push-pull Voltage Regulator","authors":"Tiago Miguel Klein Faistel, Henrique Jank, Gustavo Colpes Ribeiro, M. L. da Silva Martins, Luiz Antonio Correa Lopes","doi":"10.1109/COBEP53665.2021.9684135","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684135","url":null,"abstract":"This paper presents a power converter to interface an extra low voltage bus, ELV (48 V) and a low voltage bus, LV (380 V) in a residential dc-dc nanogrid of 1.2 kW. The proposed converter makes use of a composite structure where a DC transformer (DCX converter) handles the major amount of the processed power between the DC buses. DCX is design to operate at a fixed duty-cycle where the transformer turns-ratio is optimized to ensure the lowest conduction losses. To provide voltage regulation to ELV bus, a parallel voltage regulator (DCR) is employed. The power handled by the DCR is proportional to its input voltage across capacitor $C$ 1.1 Results from a 1.2 kW laboratory prototype confirm the feasibility of the proposed composite converter and reveals that it is a strong candidate for DC-DC applictations with a narrow volage regulation range.","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116312113","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}
引用次数: 3
Experimental Evaluation of a Dual DC Buses Nanogrid with Interlink Converter 具有互连变换器的双直流母线纳米栅格的实验评价
2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684037
E. L. Carvalho, L. Bellinaso, R. Cardoso, L. Michels
{"title":"Experimental Evaluation of a Dual DC Buses Nanogrid with Interlink Converter","authors":"E. L. Carvalho, L. Bellinaso, R. Cardoso, L. Michels","doi":"10.1109/COBEP53665.2021.9684037","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684037","url":null,"abstract":"Due to the increasing addition of distributed energy resources (DERs) on residential and commercial buildings, nanogrids have been considered for low voltage and low power installations. In this application, extra-low voltage dc buses are interesting to supply different loads with reduced power processing stages. This is because many loads and sources can be easily integrated on extra-low voltage dc buses (ELVDC), as well as batteries, electronic loads, PV panels, and others. On the other hand, the highest voltage levels dc buses are still important to allow the ac grid connection. To form nanogrids with more than one dc bus, the development of bidirectional interlink converters (BIC) is important and is still a challenge due to the wide voltage rations between ELVDC and LVDC buses. A Current-fed Dual-Active Bridge (CF -DAB) converter is proposed in this paper to evaluate experimentally a dual buses nanogrid. In addition, a control structure and an average model are presented to perform the closed-loop results.","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124351692","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}
引用次数: 3
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