Eletrônica de Potência最新文献_第10页

THREE-PHASE TO SINGLE-PHASE GENERATION SYSTEM BASED ON DOUBLY-FED INDUCTION GENERATOR 基于双馈感应发电机的三相到单相发电系统

Eletrônica de Potência Pub Date : 2020-03-19 DOI: 10.18618/REP.2020.1.0051

F. V. Rocha, N. Rocha, V. B. Melo, E. R. C. Silva, C. Jacobina

引用次数: 0

BIDIRECTIONAL DOUBLE-CONVERSION UNINTERRUPTIBLE POWER SUPPLY FOR INTEGRATION OF PHOTOVOLTAIC PANELS AND MPPT 光伏板与MPPT集成的双向双转换不间断电源

Eletrônica de Potência Pub Date : 2020-03-19 DOI: 10.18618/rep.2020.1.0064

W. A. Venturini, J. Lenz, Henrique Jank, J. R. Pinheiro, L. Lopes, F. Bisogno

{"title":"BIDIRECTIONAL DOUBLE-CONVERSION UNINTERRUPTIBLE POWER SUPPLY FOR INTEGRATION OF PHOTOVOLTAIC PANELS AND MPPT","authors":"W. A. Venturini, J. Lenz, Henrique Jank, J. R. Pinheiro, L. Lopes, F. Bisogno","doi":"10.18618/rep.2020.1.0064","DOIUrl":"https://doi.org/10.18618/rep.2020.1.0064","url":null,"abstract":"Resumo – Este trabalho propõe uma topologia de UPS de dupla conversão para a integração com painéis fotovoltaicos que permite o rastreamento do ponto de máxima potência sem a adição do usual conversor CC-CC para interface entre painéis e barramento CC. Os painéis são conectados diretamente ao barramento CC, e o MPPT é realizado pelo circuito de entrada. Através deste sistema, é possível alimentar cargas com uma tensão de saída regulada, independentemente dos distúrbios da tensão da rede pública, enquanto gerando energia fotovoltaica. Em caso de energia excedente, pode-se injetar corrente na rede, vez que o circuito de entrada possui característica bidirecional. O desempenho do sistema é validado através de resultados Hardware-in-the-Loop , os quais demonstram a funcionalidade da topologia proposta. Abstract – This work proposes a double-conversion UPS topology for the integration with photovoltaic panels that allows the maximum power point tracking without the addition of the usual DC-DC converter for interface between panels and DC-link. The panel arrangement is connected directly to the DC-link, and the MPPT is performed by the input circuit. Through this system it is possible to feed loads with a regulated output voltage regardless of mains voltage disturbances while generating PV energy. In case of power excess, current can be injected into the mains since the input circuit has a bidirectional characteristic. The system performance is validated through Hardware-in-the-Loop results, which demonstrate the functionality of the proposed topology.","PeriodicalId":149812,"journal":{"name":"Eletrônica de Potência","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127738611","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: 2

Design and Development of a Grid-tied Transformerless Single-stage Multistring Photovoltaic CSI Inverter 无变压器并网单级多串光伏CSI逆变器的设计与研制

Eletrônica de Potência Pub Date : 2020-02-07 DOI: 10.18618/rep.2020.1.0058

R. R. D. Lima, F. C. Melo, L. Freitas, G. B. Lima, D. Rodrigues, L. P. Pires

引用次数: 0

MODELING AND DESIGN OF A FAST-DYNAMIC RESPONSE PHASE-LOCKED LOOP BASED ON MOVING AVERAGE FILTER 基于移动平均滤波器的快速动态响应锁相环的建模与设计

Eletrônica de Potência Pub Date : 2020-02-06 DOI: 10.18618/rep.2020.1.0003

F. Martinz, R. Destro, N. Ama, Kelly C. M. Carvalho, W. Komatsu, Lourenco Matakas Junior

引用次数: 0

OVERVOLTAGE PROTECTION FOR HIGH FREQUENCY HIGH VOLTAGE POWER TRANSFORMERS 高频高压电力变压器过电压保护

Eletrônica de Potência Pub Date : 2020-02-05 DOI: 10.18618/rep.2020.1.0045

Diego Teruo Mendes de Souza, Bruno Valverde, J. Pomilio

{"title":"OVERVOLTAGE PROTECTION FOR HIGH FREQUENCY HIGH VOLTAGE POWER TRANSFORMERS","authors":"Diego Teruo Mendes de Souza, Bruno Valverde, J. Pomilio","doi":"10.18618/rep.2020.1.0045","DOIUrl":"https://doi.org/10.18618/rep.2020.1.0045","url":null,"abstract":"– Transformers with high-voltage operation may have undesired behavior due to the effects of their parasitic elements. In power electronics applications, if the primary voltage has harmonics, transformer resonances may be excited, causing high primary currents and secondary voltage stress, compromising the device isolation. This behavior is quite dangerous if the transformer operates without load, what means, without damping, because in this situation, the secondary voltage peak can reach more than two times the expected (rated) value. To protect the high frequency high voltage transformer against this dangerous operation, the overvoltage problem in open load condition is carefully explored and explained in this paper, with the proposition of different protection strategies to mitigate its effect, depending on the transformer parasitic elements values. The different strategies are analytically explained and validated by experimental results, showing their criteria design and effectiveness for the protection of high frequency high voltage transformers through the analysis of a 1 kVA, 311V, 20 kHz, 42/512 ferrite core transformer, showing its dynamics working alone and with each protection strategy.","PeriodicalId":149812,"journal":{"name":"Eletrônica de Potência","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116140793","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

Proposal, Analysis and Experimental Verification of Nonisolated DC-DC Converters Conceived from an Active Switched-Capacitor Commutation Cell 基于有源开关电容整流单元的非隔离DC-DC变换器的设计、分析和实验验证

Eletrônica de Potência Pub Date : 2019-12-30 DOI: 10.18618/rep.2019.4.0031

M. D. Vecchia, J. M. Andrade, Neilor C. Dal Pont, A. Kirsten, T. Lazzarin

{"title":"Proposal, Analysis and Experimental Verification of Nonisolated DC-DC Converters Conceived from an Active Switched-Capacitor Commutation Cell","authors":"M. D. Vecchia, J. M. Andrade, Neilor C. Dal Pont, A. Kirsten, T. Lazzarin","doi":"10.18618/rep.2019.4.0031","DOIUrl":"https://doi.org/10.18618/rep.2019.4.0031","url":null,"abstract":"This paper introduces a new family of nonisolated dc-dc converters that are generated by the integration of the active switched-capacitor (ASCC) and the conventional commutation cell (CCC). Based on the commutation cell concept, the new conceived hybrid active commutation cell (HACC) provides three different types of hybrid converters: buck, boost and buck-boost. All three converters are investigated in this study through the following approaches: topological stages, static gain analysis considering the switched capacitor features, generalization of the HACC and gain for M cells and steady-state analysis. The buck version presents a high conversion rate, which demonstrates that it has potential for step-down applications. To verify the proposed topologies, a prototype was built with the following specifications: 600 V input voltage, 150 V output voltage, 70 kHz switching frequency and 1 kW rated power. Efficiency close to 95% was obtained at 1 kW for the buck topology, which demonstrates that the proposed HACC can provide gain and high efficiency at the same time.","PeriodicalId":149812,"journal":{"name":"Eletrônica de Potência","volume":"362 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133364105","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: 2

High Voltage Gain Isolated DC-DC Converter for Integration in Photovoltaic Modules 用于光伏组件集成的高电压增益隔离DC-DC变换器

Eletrônica de Potência Pub Date : 2019-12-30 DOI: 10.18618/rep.2019.4.0042

Carolina Knaesel, L. Michels, A. Batschauer, M. Mezaroba

{"title":"High Voltage Gain Isolated DC-DC Converter for Integration in Photovoltaic Modules","authors":"Carolina Knaesel, L. Michels, A. Batschauer, M. Mezaroba","doi":"10.18618/rep.2019.4.0042","DOIUrl":"https://doi.org/10.18618/rep.2019.4.0042","url":null,"abstract":"Significant cost reduction of photovoltaic system components has changed the perspective of future application of these systems. Many installation sites currently discarded due to non-optimal orientations and partial shading conditions may become economically viable. Moreover, there is a tendency for the dissemination of building integrated photovoltaic systems (BIPV). An interesting approach to maximizing the power conversion Artigo submetido em 30/05/2019. Primeira revisão em 12/08/2019. Aceito para publicação em 09/12/2019 por recomendação do Editor Marcelo Cabral Cavalcanti. http://dx.doi.org/10.18618/REP.2019.4.0042 of these systems consider using parallel arrays of integrated modules (MIC) converters. In this approach all MICs operate independently of each other providing modularity and simplicity of installation and operation. In this work is proposed using a MIC topology based on a soft-switching high-gain isolated half-bridge dc-dc boost converter for this application. This converter is analyzed in detail and is proposed a new equation to determine the static gain of this topology considering the loss of cyclic ratio caused by the presence of the auxiliary switching inductance, a methodology for designing the auxiliary inductance aiming at guaranteeing the ZVS of all switches over a wide operating range, as well as the introduction of a cascaded control scheme for parallel operation of the MIC converters. Experimental results were obtained in similar 130 W prototypes operating with their outputs connected in parallel, demonstrating the viability of the topology for the application as well as the proposed control system.","PeriodicalId":149812,"journal":{"name":"Eletrônica de Potência","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131719587","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

Solução Integrada para o Disparo de IGBTs Conectados em Série Baseada no Comando Típico de Tiristores 基于典型晶闸管控制的串联晶闸管触发的集成解决方案

Eletrônica de Potência Pub Date : 2019-12-30 DOI: 10.18618/rep.2019.4.0033

Gustavo Oliveira Fortes, Marcos Antônio Ferreira Mendes, P. C. Cortizo

引用次数: 0

Development of a Wind Turbine Emulator Based on Dynamic Model of a Permanent Magnet Synchronous Generator 基于永磁同步发电机动力学模型的风力机仿真器开发

Eletrônica de Potência Pub Date : 2019-12-30 DOI: 10.18618/rep.2019.4.0032

Danilo Henrique Wollz, S. A. O. Silva, L. P. Sampaio

{"title":"Development of a Wind Turbine Emulator Based on Dynamic Model of a Permanent Magnet Synchronous Generator","authors":"Danilo Henrique Wollz, S. A. O. Silva, L. P. Sampaio","doi":"10.18618/rep.2019.4.0032","DOIUrl":"https://doi.org/10.18618/rep.2019.4.0032","url":null,"abstract":"This work presents the development of an electronic wind emulator (EWEm), which involves the dynamic models of the wind turbine, the permanent magnet synchronous generator and the mechanical coupling turbine-generator. These models are used to generate the EWEm voltage references, which are synthesized by a three-phase three-wire voltage source inverter, so that a real wind turbine can be emulated at different wind speeds. As advantages, the proposed EWEm presents low cost of implementation and versatility in the emulation of different models of Artigo submetido em 25/04/2019. Primeira revisão em 13/06/2019. Aceito para publicação em 15/11/2019 por recomendação do Editor Marcello Mezaroba. http://dx.doi.org/10.18618/REP.2019.4.0032 commercial wind turbines, making possible the accomplishment of several researches in the laboratory. A three-phase controlled rectifier is used in the input stage of the EWEm to control the DC-bus voltage of the inverter, as well as drain sinusoidal currents from the grid, so that an effective power factor correction is achieved. Both mathematical models of the inverter and the input rectifier are represented in the synchronous reference frame dq. In order to validate the study, as well as to evaluate the static and dynamic performances of the proposed EWEm, experimental results are presented considering the system subjected to different types of load and wind profiles.","PeriodicalId":149812,"journal":{"name":"Eletrônica de Potência","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122383578","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-Stage AC-DC Cascaded Converter for Applications in Solid State Transformers 用于固态变压器的单级交-直流级联变换器

Eletrônica de Potência Pub Date : 2019-12-30 DOI: 10.18618/rep.2019.4.0044

P. Praça, José W.M. Araújo, D. Honório, D. S. Junior, L. Barreto

引用次数: 0