2021 Brazilian Power Electronics Conference (COBEP)最新文献_第5页

Power Quality Improvements in Aircraft Systems: A Proposal Using a 24-pulse Converter for Harmonic Mitigation 飞机系统的电能质量改进:使用24脉冲变换器缓解谐波的建议

2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684085

Hugo Oliveira Vilas Boas, Ângelo José Junqueira Rezek, Christel Enock Ghislain Ogoulola

{"title":"Power Quality Improvements in Aircraft Systems: A Proposal Using a 24-pulse Converter for Harmonic Mitigation","authors":"Hugo Oliveira Vilas Boas, Ângelo José Junqueira Rezek, Christel Enock Ghislain Ogoulola","doi":"10.1109/COBEP53665.2021.9684085","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684085","url":null,"abstract":"Power quality improvements and availability of electrical power are issues of great importance to aircraft systems. This paper presents an alternative 24-Pulse Converter System (CS-24P) to reduce the 11th and 13th filters in AC supply system, initially installed in traditional 12-pulse rectifiers (CS-12P) in more electric aircraft systems. The topological structure of the proposed CS-24P comprises two special three-phase three winding transformers and four 6-pulse three-phase AC-DC converters connected in series on the DC side of the system. To show the advantages of the proposed CS-24P compared with the traditional CS-12P used with AC and DC filters, computer simulations were carried out using Matlab/Simulink software to prove the theoretical analysis performed with the help of the MathCad program. The theoretical and simulation results show that the total harmonic distortion (% THD) of the input current for the CS-24P is equal to 6.60% at 60 Hz and 2.92% at 400 Hz, respectively, which meets the IEEE-519 and MIL-STD-704F requirements. Furthermore, the ripple amplitude obtained of DC voltage is less than 6 V (maximum), which meets the RTCA-DO-160F aeronautical standard. Also, it is shown that in comparison with the traditional CS-12P, the proposed CS-24P presents a satisfactory performance in terms of % THD of AC current and voltage, power factor, ripple amplitude (peak to mean) and ripple factor of DC voltage. A laboratory prototype was designed and executed using available laboratory resources to validate the research. The obtained results confirm the technical feasibility and applicability of the proposed prototype in aircraft systems.","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"10 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":"117290293","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

A New Positive-Sequence Detector Phase-Locked Loop Algorithm for DC Offset Rejection 一种新的用于直流偏置抑制的正序检测器锁相环算法

2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684140

M. D. de Brito, Artur A. de Carvalho, R. B. Godoy, Anderson S. Volpato, L. F. S. C. Pereira, E. Batista

引用次数: 0

Design of Robust Controllers Applied to DC-DC Converters with Uncertain Parameters Optimized by Metaheuristics 基于元启发式优化的不确定参数DC-DC变换器鲁棒控制器设计

2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684008

L. Borin, E. Mattos, Renan Medke, C. Osório, G. Koch, V. Montagner

引用次数: 0

Analysis of Impacts on the Frequency of Electrical Systems Caused by Distributed Energy Resources 分布式能源对电力系统频率的影响分析

2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684076

Thiago R. Barros, J. A. G. Archetti, Larissa M. Monteiro, J. G. Oliveira

引用次数: 0

Isolated High Gain DC-DC Converter with Low Input and Output Current Ripple for Photovoltaic System Applications 用于光伏系统的低输入输出纹波隔离高增益DC-DC变换器

2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684054

Anderson P. Pontes, Hugo dos S. Vieira, E. Junior

{"title":"Isolated High Gain DC-DC Converter with Low Input and Output Current Ripple for Photovoltaic System Applications","authors":"Anderson P. Pontes, Hugo dos S. Vieira, E. Junior","doi":"10.1109/COBEP53665.2021.9684054","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684054","url":null,"abstract":"This paper proposes a DC-DC high gain converter topology for applications in photovoltaic systems connected to microgrids and nanogrids. The presented topology aims to obtain low ripple current source characteristics at the input and output of the converter, to respectively satisfy the tracking of the maximum power point and avoid the beat phenomenon in a DC bus, which can reduce the quality of the power injected into the bus. Galvanic isolation aims to comply with the safety standards established in some countries for photovoltaic systems. This paper initially presents the theoretical foundation for the proposed topology. Then the converter operation stages are described, allowing the equation of each stage. A more accurate expression for the gain is shown, as it considers the influence of the converter's transformer leakage inductance. The paper also shows the sizing of the input and output inductors, as well as the coupling capacitor. The experimental parameters obtained from the photovoltaic panel and the transformer are presented below, allowing for quantitative simulation analyses. A comparison between the simulation and theoretical values is made, resulting in simulated current gain and ripple values that validate the theoretical model. Finally, the efficiency of the converter is estimated to be 96.48%.","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"130 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":"125596892","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

Improving Transient Response of a Synchronous Generator Emulation Technique Applied to Grid-tied Converters 并网变流器同步发电机仿真技术改善暂态响应

2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684056

Thiago F. do Nascimento, A. Salazar

引用次数: 2

Tuning of a PI Speed Regulator for Electric Drives by Using Particle Swarm Optimization Algorithm 基于粒子群优化算法的电力传动PI调速器整定

2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684084

Guilherme F. dos Santos, W. G. da Silva, V. Pickert, Gélson da Cruz Júnior

{"title":"Tuning of a PI Speed Regulator for Electric Drives by Using Particle Swarm Optimization Algorithm","authors":"Guilherme F. dos Santos, W. G. da Silva, V. Pickert, Gélson da Cruz Júnior","doi":"10.1109/COBEP53665.2021.9684084","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684084","url":null,"abstract":"This paper presents an investigation on the use of the Particle Swarm Optimization (PSO) algorithm on the tuning of a classical PI speed controlled DC motor drive. The motor drive system has two control loops, an inner one for the armature current and an outer one for the speed. The tuning of the current controller is kept unchanged and the PSO is used to tune only the speed regulator. The integral of the absolute speed error is used as the fitness criteria, therefore, the faster the speed response meets the speed demand, the better the particle or individual that represents the tuning. The searching space which represents possible values of the proportional and integral controller gains was limited to keep the system linear. Then, one may know in advance which tuning is the best and the algorithm is put to the test before the changing of some important parameters, such as inertia weight and cognitive and social coefficients. To make the task a little more difficult, the drive system was made non-linear by adding a limit to the controller's output and the PSO was used to do the same job with same parameter variation within the algorithm. Simulation results are presented showing the capability of the PSO algorithm to quickly find the best tuning for the speed controller, representing an important tool for optimization problems.","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"49 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":"122699442","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

Family of Bidirectional Boost/Buck DC-DC Converter 双向升压/降压DC-DC变换器系列

2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684095

Fabiano Gonzales Nimitti, M. D. da Silva, António Manuel Santos Spencer Andrade

引用次数: 1

Thermal Mathematical Modeling of Photovoltaic Inverters and Experimental Validation 光伏逆变器热数学建模及实验验证

2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684058

Geyciane P. de Lima, Guilherme Cerbatto Schmitt Prym, K. B. de Melo, H. S. Moreira, João Lucas de Souza Silva, E. R. Filho, M. G. Villalva

{"title":"Thermal Mathematical Modeling of Photovoltaic Inverters and Experimental Validation","authors":"Geyciane P. de Lima, Guilherme Cerbatto Schmitt Prym, K. B. de Melo, H. S. Moreira, João Lucas de Souza Silva, E. R. Filho, M. G. Villalva","doi":"10.1109/COBEP53665.2021.9684058","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684058","url":null,"abstract":"The inverter is one of the most failure-prone components of the photovoltaic (PV) system. Failure can happen under the influence of variables such as temperature, making it a challenge to study temperature behaviour under different conditions. It is possible to extend the useful life and increase the reliability of the inverter by investigating the thermal influence on electrical parameters and by evaluating the temperature under different operating conditions. Mathematical thermal modeling is an important tool in the analysis of the operating behavior of the solar inverter. Papers on this subject are rare in the literature. This work analyzes an inverter thermal modeling method and validates it through laboratory experiments. This work also makes a comparison with another method found in the literature, based on linear regression. As a result, the mean absolute percentage error of the analyzed modelling method was less than 2 % in comparison with data obtained experimentally. An important conclusion of this work is that a good thermal modeling requires the experimental determination of the thermal coefficients that integrate the mathematical model.","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"167 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":"122044932","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

Delta-CHB STATCOM with reduced energy storage requirements based on third harmonic injection Delta-CHB STATCOM基于三次谐波注入降低了储能要求

2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684088

Dayane do Carmo Mendonça, João Marcus Soares Callegari, A. F. Cupertino, H. Pereira, S. I. Seleme Junior, R. Teodorescu

{"title":"Delta-CHB STATCOM with reduced energy storage requirements based on third harmonic injection","authors":"Dayane do Carmo Mendonça, João Marcus Soares Callegari, A. F. Cupertino, H. Pereira, S. I. Seleme Junior, R. Teodorescu","doi":"10.1109/COBEP53665.2021.9684088","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684088","url":null,"abstract":"The delta connected cascade H-Bridge converter (Delta-HUB) has emerged as an interesting topology for STATCOM applications. A drawback of this topology is the low-frequency ripple in the sub module voltage that leads to high energy storage requirements. Due to the inherent characteristic of Delta-HUB topology, the zero sequence components present in the circulating current do not flow into the grid. This work aims to explore the third harmonic circulating current injection to minimize energy storage requirements, since this method changes the shape of the capacitor voltage waveform. Initially, the expression of the sum of the capacitor voltages is analytically derived. Then, the third harmonic injection is evaluated based on 17 MVA/13.8 kV Delta-HUB case study with 24 cells per cluster. Also, the methodology was evaluated with an experimental setup based on 500 VA/220 V submodule. The results indicate a reduction in the capacitor voltage ripple of 26.64% and 62.10%, when the converter is injecting and absorbing nominal reactive power from the grid, respectively.","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"8 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":"123548179","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