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General Evaluation of Rectifier Arrangements for the Three-Phase DC/DC Converter 三相DC/DC变换器整流器布置的一般评价
2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684123
Davi Araujo Chaves Souza, P. Praça, Luiz Henrique Silva Colado Barreto, S. G. Barbosa, F. L. Tofoli, D. de Souza Oliveira
{"title":"General Evaluation of Rectifier Arrangements for the Three-Phase DC/DC Converter","authors":"Davi Araujo Chaves Souza, P. Praça, Luiz Henrique Silva Colado Barreto, S. G. Barbosa, F. L. Tofoli, D. de Souza Oliveira","doi":"10.1109/COBEP53665.2021.9684123","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684123","url":null,"abstract":"This paper presents the figure of merit of a three-phase dc/dc converter considering several transformer and rectifier arrangements. The main waveforms obtained by simulation are presented and some important characteristics are analyzed, which include the apparent power processed by the transformer, maximum reverse voltage and rms currents on the secondary-side diodes, among other aspects. The study aims at obtaining general design guidelines for power electronics engineers and experts.","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"17 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":"129798110","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
Small-signal modeling of the Boost-Buck for single-phase grid connected photovoltaic systems 单相并网光伏系统升压降压的小信号建模
2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684078
Mauricio Taconelli, P. F. Silva, R. Machado, Amilcar Flamarion Querubini Gonçalves
{"title":"Small-signal modeling of the Boost-Buck for single-phase grid connected photovoltaic systems","authors":"Mauricio Taconelli, P. F. Silva, R. Machado, Amilcar Flamarion Querubini Gonçalves","doi":"10.1109/COBEP53665.2021.9684078","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684078","url":null,"abstract":"In the last few decades, the traditional electrical power grid has undergone by a transformation process in which the decentralization of generation sources seems to playa fundamental role. In this context, the growing presence of solar photovoltaic sources has opened space for the development of more efficient inverters, in particular, the topologies of transformerless inverters and microinverters. Thus, in this paper we will propose the small-signal analysis of a Boost-Buck converter connected to an unfolding circuit for grid-tied single phase applications powered by a photovoltaic arrays. According to the principle operation, the circuit configuration and mathematical modeling will be presented considering the properties of the average state-space model of the converter. Finally, analyzes are performed on the impact of parasitic elements based on the mathematical model, as well as results of simulations of the inverter dynamics will be presented.","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":"122383122","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
Siamese Neural Network Architecture for Fault Detection in a Voltage Source Inverter 基于Siamese神经网络的电压源逆变器故障检测
2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684063
Lincoln Moura de Oliveira, Francisco Eduardo Mendes da Silva, Gabriel Marçal da Cunha Pereira, Demercil S. Oliveira, Fernando Luiz Marcelo Antunes
{"title":"Siamese Neural Network Architecture for Fault Detection in a Voltage Source Inverter","authors":"Lincoln Moura de Oliveira, Francisco Eduardo Mendes da Silva, Gabriel Marçal da Cunha Pereira, Demercil S. Oliveira, Fernando Luiz Marcelo Antunes","doi":"10.1109/COBEP53665.2021.9684063","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684063","url":null,"abstract":"This study presents a methodology for evaluating the operating conditions of power converters through similarity analysis using the Siamesa Neural Network technique. The time series of the inverter waveforms are collected for 3 cycles, then converted and analyzed using image processing. For the evaluation of the method by simulation, initially the structure of the H bridge three-phase inverter is used, and later the ANPC hybrid topology with asymmetric modulation, both operating in open loop. The line voltage and current waveforms for the first and the line and phase voltage for the second are the parameters for defining and comparing normal steady-state operating conditions and open circuit conditions in the switches. The work presents the promising ability of siamese neural networks to observe the inverter operating conditions and carry out the identification and diagnosis of faults, given the prior knowledge of the circuit behavior, with the advantage of calculating the similarities even without the use of specific data bank for network training.","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"6 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":"127849305","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
Robust Current Control of Three-Phase Grid-Connected Converters By Using the ADRC Method 基于ADRC方法的三相并网变流器鲁棒电流控制
2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684144
Diana Alves Campos de Araujo, J. A. Moor Neto, Thiago Americano do Brasil, J. Gouvêa, A.R. Lopes Zachi
{"title":"Robust Current Control of Three-Phase Grid-Connected Converters By Using the ADRC Method","authors":"Diana Alves Campos de Araujo, J. A. Moor Neto, Thiago Americano do Brasil, J. Gouvêa, A.R. Lopes Zachi","doi":"10.1109/COBEP53665.2021.9684144","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684144","url":null,"abstract":"This paper addresses the control design of a current mode control for a three-phase voltage source converter. A variant of the Active Disturbance Rejection Control (ADRC) scheme is proposed for comparison with the classical inner control approach. The ADRC method has a straightforward design procedure and has well-known abilities for disturbance rejection and robustness to parametric uncertainties of the system. Theoretical studies are presented and simulation results are discussed by using EMTP-RV environment considering the system Synchronous Reference Frame Control, whose modeling was extracted from the analysis performed in a classical refer-ence.","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"42 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":"123197446","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
Sorting-algorithm-based Modulation Technique For Voltage Balancing the Floating Capacitors of Modular Multilevel Converters 基于分选算法的模块化多电平变换器浮动电容电压平衡调制技术
2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684009
Micael P. de Lucena, C. Gehrke, I. R. F. M. P. da Silva
{"title":"Sorting-algorithm-based Modulation Technique For Voltage Balancing the Floating Capacitors of Modular Multilevel Converters","authors":"Micael P. de Lucena, C. Gehrke, I. R. F. M. P. da Silva","doi":"10.1109/COBEP53665.2021.9684009","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684009","url":null,"abstract":"The modular multilevel cascade converter (MMCC) has been emerging as a good solution for medium to high-voltage applications. This paper proposes a modified nearest level control for the MMCCs, aiming at a lower error in the voltages of the submodules and a reduction in the computational effort. To check the feasibility of the proposed technique, a comparison of the results was carried out with the phase-shifted carrier technique. From the proposed solution, $m+1$ voltage levels can been achieved, similar as some applications, besides presenting better results in the voltage balancing of the floating capacitors and the waveform quality of output voltages.","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"65 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":"126591050","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
Inside Residential Distributed Generation: A Look of High Frequency Contamination 住宅内部分布式发电:高频污染的透视
2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684070
Gustavo Ortenzi, J. Pomilio
{"title":"Inside Residential Distributed Generation: A Look of High Frequency Contamination","authors":"Gustavo Ortenzi, J. Pomilio","doi":"10.1109/COBEP53665.2021.9684070","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684070","url":null,"abstract":"This paper presents the study of high-frequency voltage contamination on residential installation with photovoltaic generation. Such voltage pollution results relevant high frequency current circulating inside the house wiring. The main reason is that the electronic loads, majoritarian in modern residences, have a capacitor in the front-end, what means, in the connection with the feeder, allowing a low impedance path for the high frequency components. Measurements with real loads and test capacitors allow making the above statement. For small and medium power loads, the high-frequency current has the same order of magnitude of the non-polluted load current. The impact on the behavior of each specific load as well as on the equipment reliability must be investigated. Finally, a different high-frequency voltage background was observed, probably due to similar PV inverters in the neighborhood, spreading through the distribution feeders.","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"25 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":"131392976","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 Active-Neutral-Point Clamped Seven-Level Boost Inverter 一种新型有源-中性点箝位七电平升压逆变器
2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684064
R. D. B. Cardoso, L. Limongi, E. D. da Silva
{"title":"A New Active-Neutral-Point Clamped Seven-Level Boost Inverter","authors":"R. D. B. Cardoso, L. Limongi, E. D. da Silva","doi":"10.1109/COBEP53665.2021.9684064","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684064","url":null,"abstract":"This paper proposes a new active-neutral-point clamped (ANPC) seven-level boost inverter with a switched-capacitor technique. It does not require any sensors nor control circuits to control the capacitors voltage balance. A simple modulation technique is employed, which reduces the cost and the complexity of the control system design. Since the inverter has a gain of 1.5 it becomes attractive for replacing converters in applications that need an intermediate dc-boosting stage because the input voltage source has a low value, such as photovoltaic panels and full-cells systems. The operation and performance of the proposed topology are validated through simulation and experimental results.","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"156 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":"131579191","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
Workbench proposal for PV cell control test for research and educational purposes 用于研究和教育目的的光伏电池控制测试工作台方案
2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684045
Alan Cássio Queiroz Bezerra Leite, João T. de Carvalho Neto, Reilta Christine Dantas Maia, A. Salazar, Diego Antonio De Moura Fonsêca
{"title":"Workbench proposal for PV cell control test for research and educational purposes","authors":"Alan Cássio Queiroz Bezerra Leite, João T. de Carvalho Neto, Reilta Christine Dantas Maia, A. Salazar, Diego Antonio De Moura Fonsêca","doi":"10.1109/COBEP53665.2021.9684045","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684045","url":null,"abstract":"This work has as the main objective the development of a didactic bench for practical simulations of the main parameters of photovoltaic solar energy production, such as solar radiation, temperature, and wind. In addition, this bench has a supervisory system that can monitor the input and output variables, change the photovoltaic generation parameters, insert controlled disturbances in the system, generate graphs and test reports to be used in new researches and practical classes at institutions education. This bench allows you to carry out practical tests of new MPPT (Maximum Power Point Tracking) circuit technologies, the behavior of $text{IxV}$ and $text{PxV}$ curves under different non-STC conditions, new battery storage technologies, generation effects caused by partial shading, dust, and smoke.","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"23 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":"134046380","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
Synchronous Disturbance Suppression in Bearingless Machines with Active Disturbance Rejection Controller 基于自抗扰控制器的无轴承机床同步干扰抑制
2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684121
Irlete P. Mota Alves, W. Silva, F. E. Souza, A. Salazar
{"title":"Synchronous Disturbance Suppression in Bearingless Machines with Active Disturbance Rejection Controller","authors":"Irlete P. Mota Alves, W. Silva, F. E. Souza, A. Salazar","doi":"10.1109/COBEP53665.2021.9684121","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684121","url":null,"abstract":"Active Disturbance Rejection Controllers have a robust operation when applied to the control of systems with uncertainties, nonlinearities, and in the presence of disturbances. This work studies the Active Disturbance Rejection Control (ADRC) theory with an observer structure improved by the addition of a Generalized Integrator (GI) to be applied on the position control of a bearingless machine with a split winding that suffers from the action of synchronous disturbances. The results compared an ADRC controller operation with traditional Extended State Observer (ESO) and with a Generalized Integrator Extended State Observer (GIESO) and showed that the last structure can increase the ESO ability to compensate synchronous disturbances in bearingless machines.","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"82 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":"131773789","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
Parameters Estimation of Photovoltaic Modules Using Optimization Methods Based on Metaheuristics 基于元启发式优化方法的光伏组件参数估计
2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684100
Danilo de Oliveira Pimentel, Marcelo Cabral Cavalcanti, F. Bradaschia, Eduardo José Barbosa, Leonardo Rodrigues Limongi
{"title":"Parameters Estimation of Photovoltaic Modules Using Optimization Methods Based on Metaheuristics","authors":"Danilo de Oliveira Pimentel, Marcelo Cabral Cavalcanti, F. Bradaschia, Eduardo José Barbosa, Leonardo Rodrigues Limongi","doi":"10.1109/COBEP53665.2021.9684100","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684100","url":null,"abstract":"This paper deals to evaluate a model already developed for photovoltaic (PV) modules, called global nonlinear model. Based in electrical circuit of a single-diode for PV modules' the main goal is to perform through a comparative study of precision with applying the optimization methods Pattern Search (PS), Particle Swarm Optimization (PSO) and Evolutionary Particle Swarm Optimization (EPSO) in the process of parameters estimating in the PV module model. The global nonlinear model was initially proposed with a process for estimating its parameters using the PS optimization method, therefore, it is necessary to evaluate new optimization methods in the parameter estimation process of this model. Therefore, the precision of the global nonlinear model and optimization methods were evaluated, that is, its ability to predict the behavior of I- V and P- V curves based on comparison with experimental curves, using the Mean Absolute Error in Power (MAEP) as a comparative indicator for the PV module technologies of mono crystalline silicon, polycrys-talline silicon, amorphous silicon, cadmium telluride. The results showed that stochastic metaheuristic optimization methods can lead to good results in estimating the parameters of the evaluated PV modules model.","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"32 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":"132237335","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
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