2017 Brazilian Power Electronics Conference (COBEP)最新文献_第10页

Experimental evaluation of robust and nonrobust H∞ controllers for three-phase grid-connected converters 三相并网变流器鲁棒和非鲁棒H∞控制器的实验评估

2017 Brazilian Power Electronics Conference (COBEP) Pub Date : 2017-11-01 DOI: 10.1109/COBEP.2017.8257233

G. Koch, H. Pinheiro, R. Oliveira, V. Montagner

引用次数: 3

SIC power devices in power electronics: An overview 电力电子中的SIC功率器件:综述

2017 Brazilian Power Electronics Conference (COBEP) Pub Date : 2017-11-01 DOI: 10.1109/COBEP.2017.8257396

Luciano F. S. Alves, R. C. M. Gomes, P. Lefranc, Raoni de A. Pegado, P. Jeannin, B. Luciano, F. V. Rocha

{"title":"SIC power devices in power electronics: An overview","authors":"Luciano F. S. Alves, R. C. M. Gomes, P. Lefranc, Raoni de A. Pegado, P. Jeannin, B. Luciano, F. V. Rocha","doi":"10.1109/COBEP.2017.8257396","DOIUrl":"https://doi.org/10.1109/COBEP.2017.8257396","url":null,"abstract":"Silicon (Si) power devices have dominated the world of Power Electronics in the last years, and they have proven to be efficient in a wide range of applications. But high power, high frequency and high temperature applications require more than Si can deliver. With the advance of technology, Silicon Carbide (SiC) and Gallium Nitride (GaN) power devices have evolved from immature prototypes in laboratories to a viable alternative to Si-based power devices in high-efficiency and high-power density applications. SiC and GaN devices have several compelling advantages: high-breakdown voltage, high-operating electric field, high-operating temperature, high-switching frequency and low losses. This paper provides a general review on the properties of these materials comparing some performance between Si and SiC devices for typical power electronics applications. Based on studied information, line of progress and the current state of developing, SiC seems to be the most viable substitute in high power and high temperature applications in the mid-term of Si, due to the fact that the GaN is still used in a reduced number of applications.","PeriodicalId":375493,"journal":{"name":"2017 Brazilian Power Electronics Conference (COBEP)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132625819","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: 43

Performance comparison of IGBTS and SIC-MOSFET applied in photovoltaic inverters during reactive power injection 应用于光伏逆变器的IGBTS和SIC-MOSFET在无功功率注入中的性能比较

2017 Brazilian Power Electronics Conference (COBEP) Pub Date : 2017-11-01 DOI: 10.1109/COBEP.2017.8257348

R. Paulo, Lara A. R. Rios, W. V. Ribeiro, A. F. Cupertino, H. Pereira

引用次数: 0

Comparative analysis of buck and boost converters applied to different maximum power point tracking techniques for photovoltaic systems 降压和升压变换器应用于不同光伏系统最大功率点跟踪技术的比较分析

2017 Brazilian Power Electronics Conference (COBEP) Pub Date : 2017-11-01 DOI: 10.1109/COBEP.2017.8257383

Deividi F. Zaions, A. J. Balbino, C. L. Baratieri, A. L. Stankiewicz

引用次数: 8

Compensation of disturbances from the electrical network using the Dynamic Voltage Restorer (DVR) 动态电压恢复器(DVR)补偿电网扰动

2017 Brazilian Power Electronics Conference (COBEP) Pub Date : 2017-11-01 DOI: 10.1109/COBEP.2017.8257401

Dalmo C. Silva, Josué L. Silva, J. G. de Oliveira, M. J. Carmo, M. M. Lanes

{"title":"Compensation of disturbances from the electrical network using the Dynamic Voltage Restorer (DVR)","authors":"Dalmo C. Silva, Josué L. Silva, J. G. de Oliveira, M. J. Carmo, M. M. Lanes","doi":"10.1109/COBEP.2017.8257401","DOIUrl":"https://doi.org/10.1109/COBEP.2017.8257401","url":null,"abstract":"This work presents the analysis of the necessary requirements for the control of the compensation of electrical network disturbances (sag, swell and interruption of voltage), using the Dynamic Voltage Restorer (DVR), in order to protect the sensitive load. The control system was implemented based on the synchronous coordinate system “dq”, using the Park transform, since it is a symmetrical and balanced three-phase system. This methodology was adopted as a way of simplifying the project and reducing the number of controllers applied. In a first stage of the control project, it was possible to identify the DVR transfer function by estimating some characteristic parameters such as: damping factor (ζ), natural frequency (ωn) and gain (K). In a second step, the controllers were designed by the Internal Model Control (IMC) method, applying them in the complete simulation of the DVR. With this, tests were carried out in the simulation, inserting disturbances with amplitudes and varied durations, observing the dynamic behavior of the DVR. Finally, in the simulation results section, it was observed the compensation of the disturbances inserted in the network, protecting the critical load and validating the design and development of the DVR.","PeriodicalId":375493,"journal":{"name":"2017 Brazilian Power Electronics Conference (COBEP)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128088810","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

Single-stage AC/DC converter based on sepic topology operating in continuous conduction mode 基于特定拓扑的连续导通模式单级AC/DC变换器

2017 Brazilian Power Electronics Conference (COBEP) Pub Date : 2017-11-01 DOI: 10.1109/COBEP.2017.8257298

M. V. M. Ewerling, C. Font

引用次数: 7

Hybrid DC and AC power distribution network as an alternative solution for isolated microgrids 混合直流和交流配电网络作为隔离微电网的替代解决方案

2017 Brazilian Power Electronics Conference (COBEP) Pub Date : 2017-11-01 DOI: 10.1109/COBEP.2017.8257340

H. A. Oliveira, L. A. de Souza Ribeiro, J. G. de Matos, Osvaldo Ronald Saavedra Mendez, M. P. F. de Assunção

{"title":"Hybrid DC and AC power distribution network as an alternative solution for isolated microgrids","authors":"H. A. Oliveira, L. A. de Souza Ribeiro, J. G. de Matos, Osvaldo Ronald Saavedra Mendez, M. P. F. de Assunção","doi":"10.1109/COBEP.2017.8257340","DOIUrl":"https://doi.org/10.1109/COBEP.2017.8257340","url":null,"abstract":"This work proposes a topology of isolated microgrids with hybrid network (part in DC and part in AC) of electric power distribution. The topology consists of using a main DC power distribution system and subsystems with AC distribution. DC/AC converters are strategically distributed along the main DC network, forming AC subsystems, in order to serve a certain number of consumers with AC loads. Although there are loads that can be fed in DC, this is not a reality for household loads in several countries, which are basically AC powered. Thus, the interest of this work was to evaluate the possible advantages of this topology as compared to the conventional AC microgrids with low voltage distribution network. In this context, the main aspect studied was to increase the extension of the distribution network without the need to use electric transformers or conductors with larger cross sections. Intrinsically, the efficiency of the energy distribution was evaluated with respect to the energy losses, and the variation of the implantation and operation costs. An isolated microgrid with a purely AC distribution network was used as reference: the microgrid with solar-wind generation of Lençóis Island is located in northeastern Brazil.","PeriodicalId":375493,"journal":{"name":"2017 Brazilian Power Electronics Conference (COBEP)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130583100","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: 7

Experimental results for predictive direct torque control for a squirrel cage induction motor 鼠笼式感应电动机预测直接转矩控制的实验结果

2017 Brazilian Power Electronics Conference (COBEP) Pub Date : 2017-11-01 DOI: 10.1109/COBEP.2017.8257222

A. Lunardi, A. Sguarezi, Filho

引用次数: 9

A review on gallium nitride switching power devices and applications 氮化镓开关功率器件及其应用综述

2017 Brazilian Power Electronics Conference (COBEP) Pub Date : 2017-11-01 DOI: 10.1109/COBEP.2017.8257254

W. D. de Paula, P. L. Tavares, D. C. Pereira, G. M. Tavares, Filipe L. Silva, P. S. Almeida, H. Braga

引用次数: 16

A control system for battery current sharing in DC microgrids with DC bus voltage restoration 基于直流母线电压恢复的直流微电网电池共流控制系统

2017 Brazilian Power Electronics Conference (COBEP) Pub Date : 2017-11-01 DOI: 10.1109/COBEP.2017.8257423

Wagner C. Leal

{"title":"A control system for battery current sharing in DC microgrids with DC bus voltage restoration","authors":"Wagner C. Leal","doi":"10.1109/COBEP.2017.8257423","DOIUrl":"https://doi.org/10.1109/COBEP.2017.8257423","url":null,"abstract":"This work aims at studying and simulating a strategy for controlling the charge and discharge of a battery bank in parallel with a DC (direct current) microgrid fed by alternative energy sources in a distributed generation system. The main goal of this control strategy is to ensure load division among the batteries according to their individual capacities, besides of equalizing their loads and restoring the DC bus voltage level to acceptable values. Also, it ensures that the batteries can be charged and discharged efficiently, which avoid overloads and depth of discharge. The control also provides a safe and limited terminal voltage for the battery bank and a controlled state of charge. In order to establish the charge and discharge control and a current stabilization, a bidirectional DC-DC converter (Buck-Boost) is implemented. In addition, a droop control method is used to perform the load division, which inserts a virtual resistance — a gain controlled by the battery state of charge — into the output of each converter — there is no communication among them. Classical PI controllers are used to controlling the DC-DC converters through block diagrams and analog circuits.","PeriodicalId":375493,"journal":{"name":"2017 Brazilian Power Electronics Conference (COBEP)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127808384","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: 5