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Common-mode Reduction SVPWM for Flexible Series/Parallel Motor Drives 共模减速SVPWM柔性串联/并联电机驱动
2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684109
Juliana de A. Wanderley, Raíssa Maria L. Magalhães, G. A. A. Carlos, I. R. F. M. P. da Silva
{"title":"Common-mode Reduction SVPWM for Flexible Series/Parallel Motor Drives","authors":"Juliana de A. Wanderley, Raíssa Maria L. Magalhães, G. A. A. Carlos, I. R. F. M. P. da Silva","doi":"10.1109/COBEP53665.2021.9684109","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684109","url":null,"abstract":"The drive system concept based on motor with open-end windings (OEWs) is an alternative and attractive solution to provide better performance and improved figure of merits comparatively with the drive systems based on two-level (2L) converter. From this solution, a flexible series/parallel drive system for OEW three-phase machines can be achieved. It adapts the configuration as a function of the measured speed of the machine. Thus, this paper proposes a space-vector pulsewidth modulation (SVPWM) based on the vector analysis of the switching states to reduce the common-mode voltage and improve the waveform quality. The model of a dual-inverter drive system was developed, so that was possible to identify the degrees of freedom that can be used to optimize the space-vector planes. To verify the effectiveness of the proposed SVPWM, simulation results are presented, and a comparison with the conventional 2L SVPWM is also presented.","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"118 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":"123575595","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 Simple and Powerful Model Predictive Direct Power Control for DFIG 一种简单而强大的DFIG模型预测直接功率控制
2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684128
Felipe S. Guedes, N. Rocha, A. M. Maciel, A. S. Sguarezi Filho
{"title":"A Simple and Powerful Model Predictive Direct Power Control for DFIG","authors":"Felipe S. Guedes, N. Rocha, A. M. Maciel, A. S. Sguarezi Filho","doi":"10.1109/COBEP53665.2021.9684128","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684128","url":null,"abstract":"In this paper, a proposed Finite Control Set (FCS) Model Predictive Controller (MPC) is designed to the power of the grid and rotor sides converters to improve the performance of the Doubly-Fed Induction Generators (DFIGs). The FCS-MPC is implemented to regulate the stator active and reactive powers of DFIG and the DC-link voltage, minimizing the error between them and their references. Simulations and laboratory experiments were performed, showing results for a 0.56 kW DFIG. Finally, it was verified that the proposed system can maintain the stator power and DC-link voltage at a reference, with no significant torque oscillations.","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"47 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":"123500494","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
Robust Switching Rule Design for Single-Phase Shunt Active Power Filter 单相并联有源电力滤波器鲁棒开关规则设计
2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684005
Vitor Leobet Lima, T. Dezuo
{"title":"Robust Switching Rule Design for Single-Phase Shunt Active Power Filter","authors":"Vitor Leobet Lima, T. Dezuo","doi":"10.1109/COBEP53665.2021.9684005","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684005","url":null,"abstract":"Active Power Filters (APF) dynamically compensate the effects of nonlinear load currents on the current drained from the local utility grid, in order to mitigate its Total Harmonic Distortion (THD). However, the nonlinear aspects of the desired references and the system model are challenging for robust control design. Motivated by the lack of switching rule design methods solving the APF issues, this paper proposes an adaptation and extension to an existing method in order to cope with a class of time-varying nonlinearities and references. The method is based on solving Linear Matrix Inequality (LMI) conditions, providing robust stability guarantees. The efficacy of the results are illustrated through numerical simulations based on a real single-phase shunt APF prototype.","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"60 13","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120807925","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
Design of a two-stage on-grid single-phase photovoltaic microinverter 两级并网单相光伏微型逆变器的设计
2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684105
Ícaro de Almeida Albuquerque, Susset Guerra Jiménez, Alexander Correa
{"title":"Design of a two-stage on-grid single-phase photovoltaic microinverter","authors":"Ícaro de Almeida Albuquerque, Susset Guerra Jiménez, Alexander Correa","doi":"10.1109/COBEP53665.2021.9684105","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684105","url":null,"abstract":"This paper presents the design of a non-isolated two-stage on-grid microinverter that conditions the power of a 200 W photovoltaic (PV) module and injects it into a single-phase utility grid with 127 V/60 Hz. The microinverter's first stage is a quadratic boost, whose purpose is to provide maximum power point tracking (MPPT) and high gain. The DC-AC stage consists of a full bridge inverter, which is responsible for DC link voltage regulation and control of the current injected into the grid. The microinverter also includes a PLL, in order to provide unit power factor, and an anti-islanding algorithm. The theoretical results acquired through Simulink/Matlab simulations proved the efficiency of the proposed topology for a microinverter, which fulfilled the stablished design requirements.","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"39 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":"132438470","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
Modulated Predictive Controller for a Single-Phase to Three-Phase Converters with Two Parallel Single-Phase Rectifiers 带两个并联单相整流器的单相到三相变换器的调制预测控制器
2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684073
Ruben da Cruz Ferreira, Sofia Maria Almeida Dias, N. Rocha, Edison Roberto Cabral da Silva, Victor Felipe Moura Bezerra Melo
{"title":"Modulated Predictive Controller for a Single-Phase to Three-Phase Converters with Two Parallel Single-Phase Rectifiers","authors":"Ruben da Cruz Ferreira, Sofia Maria Almeida Dias, N. Rocha, Edison Roberto Cabral da Silva, Victor Felipe Moura Bezerra Melo","doi":"10.1109/COBEP53665.2021.9684073","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684073","url":null,"abstract":"This paper proposes a single-phase to three-phase drive system consisting of two parallel single-phase rectifiers, one three-phase inverter and an induction motor. It uses two parallel rectifiers without low frequency transformers, thus the reduction of circulating current is an important objective in the control system. In this paper the Modulated Model Predictive Control is used to regulate the grid current and minimize the circulating current between the parallel rectifiers. Simulation and experimental results validate the predictive control performance applied to the system with parallel single-phase rectifiers.","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"214 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":"134145017","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
Experimental Implementation of a Single-Phase Microgrid: A Flexible Resource for Research and Educational Activities 单相微电网的实验实施:研究和教育活动的灵活资源
2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684053
A. Alonso, Luis De Oro Arenas, R. Hock, Hildo Guillardi, E. Liberado, H. Paredes, F. Gonçalves, F. Marafão
{"title":"Experimental Implementation of a Single-Phase Microgrid: A Flexible Resource for Research and Educational Activities","authors":"A. Alonso, Luis De Oro Arenas, R. Hock, Hildo Guillardi, E. Liberado, H. Paredes, F. Gonçalves, F. Marafão","doi":"10.1109/COBEP53665.2021.9684053","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684053","url":null,"abstract":"Control of power electronic inverters in AC microgrids is a challenging research field, and the deployment of control strategies to real-life implementations requires intensive theoretical and experimental prior assessment. Moreover, teaching in the microgrid field is not trivial due to the complexity of demonstrating the integrated operation of multiple power electronic devices. Thus, this paper aims at discussing the flexible layout of a 10 kVA single-phase microgrid comprising multiple inverters and operationalities, which was assembled at a research laboratory. Such microgrid prototype holds a modular feature that intends to support diverse experimental assessments of control strategies, also serving as an educational resource for teaching and technical training. The equivalent circuit of the microgrid, the multiple possibilities of use, prototype pictures, as well as experimental results are shown to depict its operation flexibilities, serving as a possible reference for the development of new microgrid setups, as well as to be replicated for use in research and educational purposes.","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"16 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":"133245652","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
A Smooth Pre-charging Strategy for an Offshore HVDC System Based on Modular Multilevel Converters 基于模块化多电平变流器的海上高压直流系统平稳预充电策略
2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684103
M. S. Paulo, S. Duarte, Frederico T. Ghetti, P. Almeida, P. G. Barbosa
{"title":"A Smooth Pre-charging Strategy for an Offshore HVDC System Based on Modular Multilevel Converters","authors":"M. S. Paulo, S. Duarte, Frederico T. Ghetti, P. Almeida, P. G. Barbosa","doi":"10.1109/COBEP53665.2021.9684103","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684103","url":null,"abstract":"This paper presents a soft pre-charging scheme for a modular multilevel converter-based HVDC transmission system used to interconnect an offshore wind farm to an electrical network. The proposed scheme comprises five stages that are continuously repeated until the dc voltages of the converters reach the peak value of the grid voltage on the side of the HVDC inverter. During the first stage, two thyristors control the current drained from the grid by the HVDC inverter in order to charge the capacitors of two arms of the MMC. Later, during the $2_{2}^{nd},3^{rd}, 4^{th}$ and $5^{th}$ stages, the energy stored in the SM capacitors during the first stage is transferred to the others SM dc capacitors of the inverter. In addition, two additional stages, the $4^{th}$ and $5^{th}$, are used to transfer part of the energy stored in the inverter's submodules capacitors to the upper and lower SMs of the rectifier. Results of digital simulations obtained with the PSCAD/EMTDC, as well as the mathematical description of each energizing stage, will be presented to demonstrate the effectiveness of the proposed strategy.","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"9 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":"127910223","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
Power Losses Evalutation of Hybrid Semiconductor Modules for Photovoltaic Inverters 光伏逆变器用混合半导体组件的功率损耗评估
2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684115
Luan Millard Corrêa Brasil, Fábio de Almeida Pongelupe, T. Corrêa, Heverton Augusto Peirera, A. F. Cupertino
{"title":"Power Losses Evalutation of Hybrid Semiconductor Modules for Photovoltaic Inverters","authors":"Luan Millard Corrêa Brasil, Fábio de Almeida Pongelupe, T. Corrêa, Heverton Augusto Peirera, A. F. Cupertino","doi":"10.1109/COBEP53665.2021.9684115","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684115","url":null,"abstract":"String inverters are usually based on Silicon (Si) IGBT, which leads to limited switching frequency and power density. In this scenario, silicon carbide (SiC) MOSFET could be an interesting solution. Nevertheless, the SiC-MOSFET is quite expensive for devices with a high current rating. In this context, this work investigates the potential of power losses reduction provided by hybrid power modules in PV inverters. The hybrid power module is based on the parallel connection of a Si-IGBT and a SiC-MOSFET. This approach reduces the switching losses of Si-IGBT systems since the IGBT reaches soft switching. Also, this approach employs a lower SiC area than the full-SiC solution. The losses for the Si-IGBT and hybrid switch are obtained from double-pulse test LTSPICE simulations and compared.","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"70 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":"121397392","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
Analysis of Current Variation in a Distribution System With High Penetration of Distributed Photovoltaic Generation 分布式光伏发电高渗透配电系统电流变化分析
2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684143
Patrick T. Barbosa, Luann G. Oliveira Queiroz, M. A. Mendes, O. E. Batista, J. Fardin
{"title":"Analysis of Current Variation in a Distribution System With High Penetration of Distributed Photovoltaic Generation","authors":"Patrick T. Barbosa, Luann G. Oliveira Queiroz, M. A. Mendes, O. E. Batista, J. Fardin","doi":"10.1109/COBEP53665.2021.9684143","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684143","url":null,"abstract":"The increase in the use of renewable sources of electric energy, with low environmental impact, has provided advances in the most diverse areas, mainly in the field of Distributed Generation (DG) that constitutes an alternative generation model to the classic centralized electricity supply system. Among the technologies that implement this model, the Distributed Photovoltaic Generation stands out to have an easy installation process, a constant cost reduction of photovoltaic panels, and to allow bigger competitiveness, when compared to other sources. However, the excessive use of this technology can cause damage to distribution networks, impacting, for example, the electric current levels of the system. This paper shows an evaluation of current variability in a distribution network based on the IEEE 13 Node Test Feeder system through a simplified model of photovoltaic generators. The demand for the system loads and the power levels provided by the generators were varied according to load curve data and specific weather conditions. The results found show that the DG can directly impact on the levels of electric current of the feeder, where maximum variations of 94.08% and 90.66% were obtained for each of the two cities analyzed.","PeriodicalId":442384,"journal":{"name":"2021 Brazilian Power Electronics Conference (COBEP)","volume":"35 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":"116310570","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
PUC5 and MPUC5 Based Shunt Active Power Filters 基于PUC5和MPUC5的并联有源电源滤波器
2021 Brazilian Power Electronics Conference (COBEP) Pub Date : 2021-11-07 DOI: 10.1109/COBEP53665.2021.9684034
S. C. S. Júnior, C. Jacobina, E. Fabrício, A. M. Maciel, Artur B. L. K. Neto
{"title":"PUC5 and MPUC5 Based Shunt Active Power Filters","authors":"S. C. S. Júnior, C. Jacobina, E. Fabrício, A. M. Maciel, Artur B. L. K. Neto","doi":"10.1109/COBEP53665.2021.9684034","DOIUrl":"https://doi.org/10.1109/COBEP53665.2021.9684034","url":null,"abstract":"This paper studies five-level packed U-cells (PUC5) and its modified version (MPUC5), both operating as shunt active power filters. These topologies generate multilevel voltages allowing filter impedance reduction, and compensate harmonic and reactive power helping to meet IEEE standards. They are compared with cascaded H-bridges in terms of number of components, quality waveforms, and stress and losses on power switches. Besides that, sensorless voltage control is presented for PUC5 topology, PWM and control strategies, simulation and experimental results are also presented.","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":"117215432","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
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