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Prof. Dr. Paulo F. Ribeiro
Institute of Electrical Systems and Energy, Federal University of Itajubá, 37500-903 Itajubá, Brazil

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0 Energy Storage
0 Philosophy Of Technology
0 Power Quality
0 Smart Grids
0 Advanced signal processing

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Power Quality
Smart Grids
Energy Storage
Advanced signal processing

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Review
Published: 08 January 2021 in Applied Sciences
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The objective of this paper was to examine the dynamic impedance estimation of electrical systems from online measurements. The paper makes several considerations and highlights the challenges to obtain a precise estimation. Transducer equalization and harmonic synchrophasor estimation (HSpE) are reviewed and discussed. The use of online and adaptive equalization for transducers proves to be a viable solution for improving voltage transducer’s (VT’s) and current transducer’s (CT’s) frequency response. Additionally, the use of oversampling algorithms can mitigate the effects of noise in the HSpE. Furthermore, methods for harmonic impedance estimation are discussed. The independent component analysis ICA-based dynamic impedance estimation is proposed and results presented, which yields excellent agreement. Finally, harmonic modeling and simulation of injected harmonic currents are used to observe resonances through the amplification and attenuations and, consequently, the opportunity to confirm the system self and transfer impedances of a test system. Dynamic impedance estimation will continue to be a great challenge for the power systems engineer as the system complexity increases with the massive insertion of power electronic inverters and the associated required filtering. Real-time signal processing will be an effective tool to determine the dynamic self or transfer impedance.

ACS Style

Mateus M. De Oliveira; Renato R. Aleixo; Denise F. Resende; Leandro R. M. Silva; Rafael S. Salles; Carlos A. Duque; Paulo F. Ribeiro. Dynamic Impedance Estimation: Challenges and Considerations. Applied Sciences 2021, 11, 558 .

AMA Style

Mateus M. De Oliveira, Renato R. Aleixo, Denise F. Resende, Leandro R. M. Silva, Rafael S. Salles, Carlos A. Duque, Paulo F. Ribeiro. Dynamic Impedance Estimation: Challenges and Considerations. Applied Sciences. 2021; 11 (2):558.

Chicago/Turabian Style

Mateus M. De Oliveira; Renato R. Aleixo; Denise F. Resende; Leandro R. M. Silva; Rafael S. Salles; Carlos A. Duque; Paulo F. Ribeiro. 2021. "Dynamic Impedance Estimation: Challenges and Considerations." Applied Sciences 11, no. 2: 558.

Journal article
Published: 30 October 2020 in IEEE Journal of Emerging and Selected Topics in Industrial Electronics
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This work deals with the design of a digital current control applied to a variable-speed low inductance BLDC motor drive. A robust static full-state feedback control law is determined by means of a convex optimization problem, subject to linear-matrix-inequality constraints. The optimization is used to achieve a fast time response with reduced overshoot under the parametric variations. Results from a 5kW/48V BLDC motor prototype is used to validate the proposed approach with a superior performance when compared to two other control strategies.

ACS Style

Pedro Machado de Almeida; Rodolfo Lacerda Valle; Pedro Gomes Barbosa; Vinicius Foletto Montagner; Vladimir Cuk; Paulo Fernando Ribeiro. Robust Control of a Variable-Speed BLDC Motor Drive. IEEE Journal of Emerging and Selected Topics in Industrial Electronics 2020, 2, 32 -41.

AMA Style

Pedro Machado de Almeida, Rodolfo Lacerda Valle, Pedro Gomes Barbosa, Vinicius Foletto Montagner, Vladimir Cuk, Paulo Fernando Ribeiro. Robust Control of a Variable-Speed BLDC Motor Drive. IEEE Journal of Emerging and Selected Topics in Industrial Electronics. 2020; 2 (1):32-41.

Chicago/Turabian Style

Pedro Machado de Almeida; Rodolfo Lacerda Valle; Pedro Gomes Barbosa; Vinicius Foletto Montagner; Vladimir Cuk; Paulo Fernando Ribeiro. 2020. "Robust Control of a Variable-Speed BLDC Motor Drive." IEEE Journal of Emerging and Selected Topics in Industrial Electronics 2, no. 1: 32-41.

Proceedings
Published: 11 September 2020 in Proceedings
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A State-of-Charge (SOC) real-time estimation plays an essential role in effective energy management. This paper proposes the use of an Artificial Neural Network (ANN) to design a state-of-charge estimator for a Graphite/LiCoO2 lithium-ion battery pack. The software MATLAB was used to develop and test several network configurations to find the ideal weights for the ANN. The results demonstrate that the Mean Squared Error (MSE) achieved renders the ANN as an effective technique. Thus, it predicted the battery bank’s SOC values with accuracy using only voltage, current, and charge/discharge time as inputs.

ACS Style

Gabriel C. S. Almeida; A. C. Zambroni de Souza; Paulo F. Ribeiro. A Neural Network Application for a Lithium-Ion Battery Pack State-of-Charge Estimator with Enhanced Accuracy. Proceedings 2020, 58, 33 .

AMA Style

Gabriel C. S. Almeida, A. C. Zambroni de Souza, Paulo F. Ribeiro. A Neural Network Application for a Lithium-Ion Battery Pack State-of-Charge Estimator with Enhanced Accuracy. Proceedings. 2020; 58 (1):33.

Chicago/Turabian Style

Gabriel C. S. Almeida; A. C. Zambroni de Souza; Paulo F. Ribeiro. 2020. "A Neural Network Application for a Lithium-Ion Battery Pack State-of-Charge Estimator with Enhanced Accuracy." Proceedings 58, no. 1: 33.

Proceedings
Published: 11 September 2020 in Proceedings
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The advance of the distributed generation in Brazil makes it essential to investigate the applications and transformations that the use of these new arrangements may entail. The use of non-centralized generation technologies associated with energy storage is interesting for several sectors of the energy market, even if the market is in the process of maturing these technologies. In the context of the time-of-use rate, these changes have allowed the consumer to use strategies to save energy bill costs, especially when its moment of most considerable consumption coincides with that of the highest tariff. In this paper, a Battery Energy Storage System (BESS) is used to perform commercial peak load reduction in a microgrid in connected mode. The microgrid also has a Photovoltaic (PV) Generator Farm as Renewable Energy Sources (RES) to provide load consumption and also to assist BESS in the peak shaving operation. The modeling and simulation of the system are performed by MATLAB/Simulink. The analysis demonstrates that the peak load reduction produces the expected financial benefits under a Brazilian time-of-use rate known as White Rate, in addition to carrying out the operation in a manner consistent with the technique from an electrical point of view. The software Homer Grid validates the potential savings. Thus, the results showed that the use of energy storage associated with renewable generation under a peak shaving strategy allows greater freedom for the consumer in the face of costs with main grid purchases.

ACS Style

Rafael S. Salles; A. C. Zambroni De Souza; Paulo F. Ribeiro. Energy Storage for Peak Shaving in a Microgrid in the Context of Brazilian Time-of-Use Rate. Proceedings 2020, 58, 16 .

AMA Style

Rafael S. Salles, A. C. Zambroni De Souza, Paulo F. Ribeiro. Energy Storage for Peak Shaving in a Microgrid in the Context of Brazilian Time-of-Use Rate. Proceedings. 2020; 58 (1):16.

Chicago/Turabian Style

Rafael S. Salles; A. C. Zambroni De Souza; Paulo F. Ribeiro. 2020. "Energy Storage for Peak Shaving in a Microgrid in the Context of Brazilian Time-of-Use Rate." Proceedings 58, no. 1: 16.

Conference paper
Published: 03 September 2020 in 2010 Annual Conference & Exposition Proceedings
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Leveraging the Unique Character of a General Engineering Program to Enhance Students’ Entrepreneurial Mindset Abstract The General Engineering degree provides a unique foundation to connect engineering with business and entrepreneurship. A significant portion of engineering students are interested in aspects of entrepreneurship which provides a springboard to engage the student’s vision and imagination for better business education and better engineering education. This paper will first discuss recent curricular changes to our BS in Engineering degree, partly sponsored by a Kern Entrepreneurship Education Network (KEEN) grant, intended to enhance engineering students’ understanding of business practices, societal needs, and engineering solutions. Initial changes focused on the “endcaps” of our first-year and senior-year courses. Based on those results, an extension of the changes throughout the curriculum may be implemented. Secondly, we identify some distinct characteristics of the general engineering curriculum that provide a fertile ground for this type of integrative, multidisciplinary work to be carried out. The learners within this context are often driven by a need to understand the “why” before they can be engaged on the “what” and “how” of engineering. The justification and explanation for technical topics and concepts are embedded in the broader context provided by a general engineering education. Finally, the paper concludes with an initial assessment of results and plans for expanding the business topics into intermediate engineering courses. I. Introduction: Why is this subject interesting and important? The multidisciplinary approach of general engineering programs (a distinct category of engineering degrees that ABET accredits without program-specific criteria) provides a particularly good foundation for entrepreneurial education. First, the breadth of these programs is more contextual than more narrowly defined engineering degrees. That context encourages students to “connect the dots”, taking a systems approach that applies knowledge from one context to another domain. Although occasionally a new idea comes completely formed without a prior version, most new inventions take existing ideas and combine them in new ways. A contextual education encourages creative, systems level thinking that forms fertile ground for combining technical design, business, and entrepreneurship. Second, general engineering programs are typically less regimented and thus more flexible, allowing them to address entrepreneurship in a variety of ways. They can add entrepreneurial content to the curriculum within specific courses or introduce entirely new courses. Third, faculty in general engineering programs come from multiple engineering disciplines and tend to be entrepreneurial themselves when it comes to curricular change and reform. Fourth, students in general engineering programs tend to be multidisciplinary and multifaceted in their academic ambitions. These students selected a general engineering degree because they see the world from a systems perspective, a contextual perspective. They want to see the big picture and make a difference in the world. They are a receptive audience for entrepreneurial approaches. Engineering students in any program, whether general or disciplinary-specific, can benefit from learning some of the concepts of entrepreneurship. The students in our engineering classes are

ACS Style

Randall Brouwer; Steven Vanderleest; Paulo Ribeiro; Robert Medema. Leveraging The Unique Character Of A General Engineering Program To Enhance Students’ Entrepreneurial Mindset. 2010 Annual Conference & Exposition Proceedings 2020, 15.843.1 -15.843.11.

AMA Style

Randall Brouwer, Steven Vanderleest, Paulo Ribeiro, Robert Medema. Leveraging The Unique Character Of A General Engineering Program To Enhance Students’ Entrepreneurial Mindset. 2010 Annual Conference & Exposition Proceedings. 2020; ():15.843.1-15.843.11.

Chicago/Turabian Style

Randall Brouwer; Steven Vanderleest; Paulo Ribeiro; Robert Medema. 2020. "Leveraging The Unique Character Of A General Engineering Program To Enhance Students’ Entrepreneurial Mindset." 2010 Annual Conference & Exposition Proceedings , no. : 15.843.1-15.843.11.

Journal article
Published: 17 August 2020 in IEEE Journal of Emerging and Selected Topics in Industrial Electronics
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This paper proposes a systematic state-space procedure to design an optimal discrete-time linear quadratic regulator applied to grid-forming converters. A comprehensive mathematical modeling of a voltage-sourced converter with an LC output filter is performed and a systematic way of including digital resonant compensators is addressed. The choice of weights is based on the minimization of selected transfer functions infinity norm, as well as on the stability margin and bandwidth. The effects of weighting on closed-loop transfer functions shape are analyzed and important points are discussed in order to establish a methodical way of choosing the weighting matrices. Experimental results are presented to validate the design and to demonstrate the system effectiveness with high loading and highly nonlinear balanced and unbalanced loads.

ACS Style

Pedro Machado de Almeida; Adeilson S. B. Ribeiro; Igor D. N. Souza; Marcelo De C. Fernandes; Gabriel A. Fogli; Vladimir Cuk; Pedro Gomes Barbosa; Paulo Fernando Ribeiro. Systematic Design of a DLQR Applied to Grid-Forming Converters. IEEE Journal of Emerging and Selected Topics in Industrial Electronics 2020, 1, 200 -210.

AMA Style

Pedro Machado de Almeida, Adeilson S. B. Ribeiro, Igor D. N. Souza, Marcelo De C. Fernandes, Gabriel A. Fogli, Vladimir Cuk, Pedro Gomes Barbosa, Paulo Fernando Ribeiro. Systematic Design of a DLQR Applied to Grid-Forming Converters. IEEE Journal of Emerging and Selected Topics in Industrial Electronics. 2020; 1 (2):200-210.

Chicago/Turabian Style

Pedro Machado de Almeida; Adeilson S. B. Ribeiro; Igor D. N. Souza; Marcelo De C. Fernandes; Gabriel A. Fogli; Vladimir Cuk; Pedro Gomes Barbosa; Paulo Fernando Ribeiro. 2020. "Systematic Design of a DLQR Applied to Grid-Forming Converters." IEEE Journal of Emerging and Selected Topics in Industrial Electronics 1, no. 2: 200-210.

Journal article
Published: 01 January 2020 in IFAC-PapersOnLine
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The paper proposes an adaptive variable synthetic inertia strategy to provide frequency and voltage support (ancillary services) in an AC MicroGrid (weak grid) composed of diesel generators and loads. A DC MicroGrid is connected to the AC one by a Voltage Source Converter (VSC). The VSC converter is driven as a Virtual Synchronous Machine (VSM), where the control strategy follows a swing equation such the converter emulates a synchronous machine, including inertial support. A rigorous stability analysis is developed based on Lyapunov technique assuring proper stability conditions for an adaptive inertia designated, such that, frequency stability is improved and power oscillations are reduced. This strategy can be exploited in low inertia systems like MicroGrids or grids with high penetration of renewables. Simulation results illustrate the performance of the proposed control and the system’s operation, where a comparison with droop control is presented.

ACS Style

Filipe Perez; Gilney Damm; Françoise Lamnabhi-Lagarrigue; Paulo Ribeiro; Renato Monaro. Adaptive Variable Synthetic Inertia from a Virtual Synchronous Machine Providing Ancillary Services for an AC MicroGrid. IFAC-PapersOnLine 2020, 53, 12968 -12973.

AMA Style

Filipe Perez, Gilney Damm, Françoise Lamnabhi-Lagarrigue, Paulo Ribeiro, Renato Monaro. Adaptive Variable Synthetic Inertia from a Virtual Synchronous Machine Providing Ancillary Services for an AC MicroGrid. IFAC-PapersOnLine. 2020; 53 (2):12968-12973.

Chicago/Turabian Style

Filipe Perez; Gilney Damm; Françoise Lamnabhi-Lagarrigue; Paulo Ribeiro; Renato Monaro. 2020. "Adaptive Variable Synthetic Inertia from a Virtual Synchronous Machine Providing Ancillary Services for an AC MicroGrid." IFAC-PapersOnLine 53, no. 2: 12968-12973.

Journal article
Published: 04 July 2019 in Energies
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The hosting capacity approach is presented as a planning, improving, and communication tool for electrical distribution systems operating under specific uncertainties, such as power quality issues, power stabilities, and reliability, among others. In other words, it is an important technique, when renewable sources are present, to answer the amount of power that is possible to supply to the system without trespassing power performance limits. However, the power flow in a distribution system, for instance, can change throughout time due to the penetration of distributed generation, as well as load consumption. Based on the dynamic nature existing in distribution grids nowadays, it is important to highlight that the hosting capacity should not be calculated in a specifically chosen time only, but must be analyzed throughout a period of time. Thus, this paper introduces an extended concept of hosting capacity in relation to an integrated impact of harmonic voltage distortion and voltage rise as a function of time for daily, weekly, monthly, or even yearly periods. This extended concept is named as Dynamic Hosting Capacity (DHC(t)). General aspects of DHC(t) are demonstrated via measured data on a photovoltaic system (PV) connected at a low-voltage (LV) side of a university building.

ACS Style

Tiago Elias Castelo De Oliveira; Math Bollen; Paulo Fernando Ribeiro; Pedro M. S. De Carvalho; Antônio C. Zambroni; Benedito D. Bonatto. The Concept of Dynamic Hosting Capacity for Distributed Energy Resources: Analytics and Practical Considerations. Energies 2019, 12, 2576 .

AMA Style

Tiago Elias Castelo De Oliveira, Math Bollen, Paulo Fernando Ribeiro, Pedro M. S. De Carvalho, Antônio C. Zambroni, Benedito D. Bonatto. The Concept of Dynamic Hosting Capacity for Distributed Energy Resources: Analytics and Practical Considerations. Energies. 2019; 12 (13):2576.

Chicago/Turabian Style

Tiago Elias Castelo De Oliveira; Math Bollen; Paulo Fernando Ribeiro; Pedro M. S. De Carvalho; Antônio C. Zambroni; Benedito D. Bonatto. 2019. "The Concept of Dynamic Hosting Capacity for Distributed Energy Resources: Analytics and Practical Considerations." Energies 12, no. 13: 2576.

Journal article
Published: 01 November 2018 in International Journal of Electrical Power & Energy Systems
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Smart initiative concepts as smart grids, cities, and microgrids are redefining the electrical power system. This new scenario enables a completely new perspective of applications that lead to a path of general improvement of grid performance, in which the participation of plug-in electric vehicles has great importance. In this view, this work proposes a comprehensive operation strategy of plug-in electric vehicles for unbalanced smart microgrid environments. The first contribution is the grid-to-vehicle strategy based on buses availability of power whose primary objective is the maintenance of satisfactory operating conditions for the grid while controlling the plug-in electric vehicles charging. The second contribution relates to a holistic vehicle-to-grid coordinated approach, which is triggered in the event of microgrid islanding. The goal, in this case, is to assist the network by using the plug-in electric vehicles available stored energy. At last, the main contribution is obtained by the combination of both methodologies providing a comprehensive operation of plug-in electric vehicles for smart microgrids environments. The proposed method is designed for general three-phase unbalanced distribution systems with a wide range of resources and present versatility in the communication requirements. For validation, simulations are performed in a comprehensive unbalanced three-phase distribution system considering different disruptive scenarios faced by microgrids. The results indicate that the proposed methodology is satisfactory and ensure the operation of the microgrid within acceptable limits in both connected and islanded situations.

ACS Style

Yuri R. Rodrigues; A.C. Zambroni de Souza; Paulo Ribeiro. An inclusive methodology for Plug-in electrical vehicle operation with G2V and V2G in smart microgrid environments. International Journal of Electrical Power & Energy Systems 2018, 102, 312 -323.

AMA Style

Yuri R. Rodrigues, A.C. Zambroni de Souza, Paulo Ribeiro. An inclusive methodology for Plug-in electrical vehicle operation with G2V and V2G in smart microgrid environments. International Journal of Electrical Power & Energy Systems. 2018; 102 ():312-323.

Chicago/Turabian Style

Yuri R. Rodrigues; A.C. Zambroni de Souza; Paulo Ribeiro. 2018. "An inclusive methodology for Plug-in electrical vehicle operation with G2V and V2G in smart microgrid environments." International Journal of Electrical Power & Energy Systems 102, no. : 312-323.

Journal article
Published: 27 October 2018 in Simulation Modelling Practice and Theory
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The paper proposes a novel approach to modelling time-varying non-linear loads in power systems, based on demand conditions. The model allows a pre-evaluation of harmonic disturbances under variable conditions using normal and uniform distribution to randomize the electrical values of the non-linear loads and the related harmonic spectra. A measurement campaign conducted on an industrial area, a deposit/maintenance and repair site utilized for trains in operation on the metro line B of Rome, has been taken into account to verify the model performance. The methodology allows estimating the voltage total harmonic distortion at the point of common coupling. Through a statistical analysis, the harmonic distortion distribution via common normality tests was evaluated. The procedure has been used also to a harmonic disturbance pre-evaluation due to a future introduction of electric vehicles charging stations in the area.

ACS Style

Regina Lamedica; Alessandro Ruvio; Paulo Fernando Ribeiro; Massimo Regoli. A Simulink model to assess harmonic distortion in MV/LV distribution networks with time-varying non linear loads. Simulation Modelling Practice and Theory 2018, 90, 64 -80.

AMA Style

Regina Lamedica, Alessandro Ruvio, Paulo Fernando Ribeiro, Massimo Regoli. A Simulink model to assess harmonic distortion in MV/LV distribution networks with time-varying non linear loads. Simulation Modelling Practice and Theory. 2018; 90 ():64-80.

Chicago/Turabian Style

Regina Lamedica; Alessandro Ruvio; Paulo Fernando Ribeiro; Massimo Regoli. 2018. "A Simulink model to assess harmonic distortion in MV/LV distribution networks with time-varying non linear loads." Simulation Modelling Practice and Theory 90, no. : 64-80.

Journal article
Published: 18 July 2018 in Sustainable Energy, Grids and Networks
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This paper deals with the output voltage control problem of a three-phase three-wire voltage source Inverter (VSI) with LC output filter. A novel discrete-time active damping technique is proposed in order to damp the filter resonance without the need of current feedback. The method is based on an inner voltage feedback with digital lead compensator on the feedback path. A modified digital resonant controller is also proposed to reject the current harmonic disturbance drawn by nonlinear loads. The resonant controllers are connected in series and the design is based on its zeros damping. Results from a small scale experimental setup are used to validate the proposed control strategy.

ACS Style

Igor D.N. de Souza; Pedro M. de Almeida; Pedro G. Barbosa; Carlos A. Duque; Paulo F. Ribeiro. Digital single voltage loop control of a VSI with LC output filter. Sustainable Energy, Grids and Networks 2018, 16, 145 -155.

AMA Style

Igor D.N. de Souza, Pedro M. de Almeida, Pedro G. Barbosa, Carlos A. Duque, Paulo F. Ribeiro. Digital single voltage loop control of a VSI with LC output filter. Sustainable Energy, Grids and Networks. 2018; 16 ():145-155.

Chicago/Turabian Style

Igor D.N. de Souza; Pedro M. de Almeida; Pedro G. Barbosa; Carlos A. Duque; Paulo F. Ribeiro. 2018. "Digital single voltage loop control of a VSI with LC output filter." Sustainable Energy, Grids and Networks 16, no. : 145-155.

Journal article
Published: 01 June 2018 in Journal of Energy Engineering
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The design of a future active distribution network is crucial for the deployment of a smarter grid. The increasing penetration of renewable power generation and of dynamic loads increases the demand for information and communication technologies to monitor and control the distribution system. With the use of a phasor measurement unit, the distribution system can control dynamic issues, and by utilizing an advanced metering infrastructure it can manage, control, and monitor several loads. As a way to support the bidirectional flow of data, an advanced automated machine communication infrastructure becomes essential for effective real-time monitoring and control. Therefore, the primary objective of this paper is to design and to implement a machine-to-machine communication network based on mobile technologies applied to machine-to-machine communications to access the network performance and requirements under real smart operation. By considering a smart grid scenario, besides coverage and data rate analyses, assessing the effect of growing grid smartness on power consumption is necessary. For this purpose, an accurate analysis of current operational requirements and future smart machine operation demands is carried out in this work. Two scenarios are designed, tested, and validated using the IEEE distribution systems under several communication constraints.

ACS Style

Francisco Martins Portelinha Júnior; Antonio Carlos Zambroni De Souza; Paulo Ribeiro; Denisson Queiroz Oliveira; Bruno De Nadai Nascimento. Design and Performance of an Advanced Communication Network for Future Active Distribution Systems. Journal of Energy Engineering 2018, 144, 04018019 .

AMA Style

Francisco Martins Portelinha Júnior, Antonio Carlos Zambroni De Souza, Paulo Ribeiro, Denisson Queiroz Oliveira, Bruno De Nadai Nascimento. Design and Performance of an Advanced Communication Network for Future Active Distribution Systems. Journal of Energy Engineering. 2018; 144 (3):04018019.

Chicago/Turabian Style

Francisco Martins Portelinha Júnior; Antonio Carlos Zambroni De Souza; Paulo Ribeiro; Denisson Queiroz Oliveira; Bruno De Nadai Nascimento. 2018. "Design and Performance of an Advanced Communication Network for Future Active Distribution Systems." Journal of Energy Engineering 144, no. 3: 04018019.

Research article
Published: 19 May 2018 in Philosophia Reformata
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The electrical energy infrastructure is one of the key life-sustaining technologies of contemporary Western society. This infrastructure is extremely complex due to its size, its multifarious technologies, and its interweaving with societal structures. Smart grids are important in future infrastructure, yet extant literature does not adequately address this complexity. This paper argues that different elements of the philosophy of Dooyeweerd offer a key to understanding this intricate complexity more fundamentally. Key concepts are the ideas of normative practices, enkapsis (intertwinement) of practices, individuality structures, and ideals and basic beliefs. By developing these ideas in the context of smart grid engineering, our research contributes to philosophy of technology, philosophy of design, and philosophy of sustainability. It offers an ontological analysis of these infrastructures, pointing a direction to the development of workable infrastructures and supporting the transition to a sustainable society.

ACS Style

Maarten J. Verkerk; Paulo F. Ribeiro; Andrew Basden; Jan Hoogland. An Explorative Philosophical Study of Envisaging the Electrical Energy Infrastructure of the Future. Philosophia Reformata 2018, 83, 90 -110.

AMA Style

Maarten J. Verkerk, Paulo F. Ribeiro, Andrew Basden, Jan Hoogland. An Explorative Philosophical Study of Envisaging the Electrical Energy Infrastructure of the Future. Philosophia Reformata. 2018; 83 (1):90-110.

Chicago/Turabian Style

Maarten J. Verkerk; Paulo F. Ribeiro; Andrew Basden; Jan Hoogland. 2018. "An Explorative Philosophical Study of Envisaging the Electrical Energy Infrastructure of the Future." Philosophia Reformata 83, no. 1: 90-110.

Conference paper
Published: 01 May 2018 in 2018 Simposio Brasileiro de Sistemas Eletricos (SBSE)
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With the increasing number of photovoltaic generators (PVs) in the distribution system, new challenges arise to maintain the delivered energy quality to consumers. Injection of current by the PV system can create an overvoltage condition around the point of common coupling to the network. To overcome this problem, recent studies show some solutions using the inverter capacity to absorb or inject reactive power to voltage control. In this context, this paper presents a case study to investigate the impact of increased levels of PV penetration in network voltage and the use of the Volt/Var and Volt/Watt control in different topologies, also including storage systems, as some possible solutions. The program used for the study was the OpenDSS, the steady-state simulation performed took into account typical variations of residential and commercial loads in a modified IEEE 13 Node test feeder. The result shows the importance of the impact analysis caused by the new types of energy generation and how the use of different solutions can mitigate the overvoltage in the most critical busbar.

ACS Style

Luiz Carlos Ribeiro; Joseph P. O. Schumann Minami; Benedito Donizeti Bonatto; Paulo Fernando Ribeiro; Antonio Carlos Zambroni De Souza. Voltage control simulations in distribution systems with high penetration of PVs using the OpenDSS. 2018 Simposio Brasileiro de Sistemas Eletricos (SBSE) 2018, 1 -6.

AMA Style

Luiz Carlos Ribeiro, Joseph P. O. Schumann Minami, Benedito Donizeti Bonatto, Paulo Fernando Ribeiro, Antonio Carlos Zambroni De Souza. Voltage control simulations in distribution systems with high penetration of PVs using the OpenDSS. 2018 Simposio Brasileiro de Sistemas Eletricos (SBSE). 2018; ():1-6.

Chicago/Turabian Style

Luiz Carlos Ribeiro; Joseph P. O. Schumann Minami; Benedito Donizeti Bonatto; Paulo Fernando Ribeiro; Antonio Carlos Zambroni De Souza. 2018. "Voltage control simulations in distribution systems with high penetration of PVs using the OpenDSS." 2018 Simposio Brasileiro de Sistemas Eletricos (SBSE) , no. : 1-6.

Conference paper
Published: 01 May 2018 in 2018 18th International Conference on Harmonics and Quality of Power (ICHQP)
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The storage of voltage and current signals over a period of time generates a large memory expense. Therefore, signal compression techniques became important in this context. This paper presents an implementation in Field Gate Programmable Array (FPGA) of an algorithm of sparse representation using redundant dictionaries, applied to the compression of electrical signals, from power systems. The representation will be based on a dictionary constituted by elements of the Fourier and Wavelet basis, that are capable to represent the stationary and transient components of the electrical signals. The results will be analyzed due to two parameters: the quality of the compressed signal, in terms of its correlation coefficient related to the original signal; and the number of elements in te representation, that is related with the compression ratio. The feasibility of the implementation in real time will be evaluated in terms of the consumed FPGA resources and the necessary frequency of operation.

ACS Style

Mateus Mostaro De Oliveira; Leandro Rodrigues Manso Silva; Carlos Augusto Duque; Luciano Manhes De Andrade Filho; Paulo Fernando Ribeiro. Implementation of an electrical signal compression system using sparce representation. 2018 18th International Conference on Harmonics and Quality of Power (ICHQP) 2018, 1 -5.

AMA Style

Mateus Mostaro De Oliveira, Leandro Rodrigues Manso Silva, Carlos Augusto Duque, Luciano Manhes De Andrade Filho, Paulo Fernando Ribeiro. Implementation of an electrical signal compression system using sparce representation. 2018 18th International Conference on Harmonics and Quality of Power (ICHQP). 2018; ():1-5.

Chicago/Turabian Style

Mateus Mostaro De Oliveira; Leandro Rodrigues Manso Silva; Carlos Augusto Duque; Luciano Manhes De Andrade Filho; Paulo Fernando Ribeiro. 2018. "Implementation of an electrical signal compression system using sparce representation." 2018 18th International Conference on Harmonics and Quality of Power (ICHQP) , no. : 1-5.

Conference paper
Published: 01 May 2018 in 2018 18th International Conference on Harmonics and Quality of Power (ICHQP)
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Harmonic impedance is an important parameter for electrical power system analyses. This parameter can be used in some important application such as island and resonance detection. The methods used for impedance estimation can be separated in two categories: invasive and noninvasive methods. The noninvasive methods do not cause any disturbance in the grid, but the results are less accurate than the invasive methods. However, in both methods, when there is frequency deviation, the results are less accurate, due to the spectral leakage caused by asynchronous sample rate. Then, this work presents a technique to improve the results of the impedance estimation using Lagrange Interpolation to synchronize the sampling and to avoid the spectral leakage.

ACS Style

Henrique L. M. Monteiro; Mateus M. De Oliveira; Ramon R. S. De Oliveira; Leandro R. M. Silva; Carlos A. Duque; Paulo F. Ribeiro. Harmonic impedance estimation in frequency deviation scenario. 2018 18th International Conference on Harmonics and Quality of Power (ICHQP) 2018, 1 -6.

AMA Style

Henrique L. M. Monteiro, Mateus M. De Oliveira, Ramon R. S. De Oliveira, Leandro R. M. Silva, Carlos A. Duque, Paulo F. Ribeiro. Harmonic impedance estimation in frequency deviation scenario. 2018 18th International Conference on Harmonics and Quality of Power (ICHQP). 2018; ():1-6.

Chicago/Turabian Style

Henrique L. M. Monteiro; Mateus M. De Oliveira; Ramon R. S. De Oliveira; Leandro R. M. Silva; Carlos A. Duque; Paulo F. Ribeiro. 2018. "Harmonic impedance estimation in frequency deviation scenario." 2018 18th International Conference on Harmonics and Quality of Power (ICHQP) , no. : 1-6.

Conference paper
Published: 01 May 2018 in 2018 18th International Conference on Harmonics and Quality of Power (ICHQP)
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Researchers and standard-setting organizations recently have paid much attention to power quality disturbances in the frequency range between 2-150 kHz, which is also referred to as supraharmonics. The majority of the commercial PQ monitors cannot access this high frequency without hardware and firmware update for more complex processor and Analog to Digital Converter. The central focus of this work is to present a technique to access the supraharmonics without significantly modification of the hardware and software of the PQ analyzers. The technique is based on analog filter banks and subsampling approach. The use of subsampling technique allows the reduction of the number of samples processed by the Fast Fourier Transform FFT. Through a systematic analysis, it was verified that the proposed methodology reduces computational complexity.

ACS Style

Thais Martins Mendes; Carlos Augusto Duque; Leandro R. Manso Silva; Danton Ferreira; Paulo F. Ribeiro; Jan Meyer; Anne Grevener. Supraharmonic analysis using subsampling. 2018 18th International Conference on Harmonics and Quality of Power (ICHQP) 2018, 1 -5.

AMA Style

Thais Martins Mendes, Carlos Augusto Duque, Leandro R. Manso Silva, Danton Ferreira, Paulo F. Ribeiro, Jan Meyer, Anne Grevener. Supraharmonic analysis using subsampling. 2018 18th International Conference on Harmonics and Quality of Power (ICHQP). 2018; ():1-5.

Chicago/Turabian Style

Thais Martins Mendes; Carlos Augusto Duque; Leandro R. Manso Silva; Danton Ferreira; Paulo F. Ribeiro; Jan Meyer; Anne Grevener. 2018. "Supraharmonic analysis using subsampling." 2018 18th International Conference on Harmonics and Quality of Power (ICHQP) , no. : 1-5.

Conference paper
Published: 01 May 2018 in 2018 18th International Conference on Harmonics and Quality of Power (ICHQP)
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The paper proposes a methodological approach to manage the electric vehicles recharging in an isolated power system characterized by low short circuit power. Focusing on harmonic disturbances, current harmonics injected in the network depend on the specific EV power converter. The model carried out allows for the evaluation of harmonic disturbances under variable conditions for non-linear loads and their harmonic spectra. The methodology allows estimating both current and voltage total harmonic distortion (THDV, THDI) at the point of common coupling (PCC). An algorithm able to manage and control the EV charging in a parking area has been developed in order to keep the THDV under a threshold limit.

ACS Style

Regina LaMedica; Marco Maccioni; Alessandro Ruvio; Paulo Ribeiro. EVs recharging management to maintain high PQ levels in LV islanded networks. 2018 18th International Conference on Harmonics and Quality of Power (ICHQP) 2018, 1 -6.

AMA Style

Regina LaMedica, Marco Maccioni, Alessandro Ruvio, Paulo Ribeiro. EVs recharging management to maintain high PQ levels in LV islanded networks. 2018 18th International Conference on Harmonics and Quality of Power (ICHQP). 2018; ():1-6.

Chicago/Turabian Style

Regina LaMedica; Marco Maccioni; Alessandro Ruvio; Paulo Ribeiro. 2018. "EVs recharging management to maintain high PQ levels in LV islanded networks." 2018 18th International Conference on Harmonics and Quality of Power (ICHQP) , no. : 1-6.

Conference paper
Published: 01 May 2018 in 2018 Simposio Brasileiro de Sistemas Eletricos (SBSE)
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The topic of smart grids is increasingly gaining greater visibility in the world of electrical engineering. Although it is a new topic in academia, there is significant research and development in progress. Bibliography research indicates that there is already much material available regarding the study of this innovation, the advantages and ways of implementing smart grids. The objective of this paper is to gather the main documents and websites related to the study of smart grids in order to facilitate the understanding and access to this topic by undergraduate students.

ACS Style

Guilherme Henrique Barbosa Dos Santos; Mario Teofilo Silva Vieira; Antonio Carlos Zambroni Zambroni De Souza; Benedito Donizeti Bonatto; Paulo Fernando Ribeiro. Smart grid educational resources for undergraduate students. 2018 Simposio Brasileiro de Sistemas Eletricos (SBSE) 2018, 1 -6.

AMA Style

Guilherme Henrique Barbosa Dos Santos, Mario Teofilo Silva Vieira, Antonio Carlos Zambroni Zambroni De Souza, Benedito Donizeti Bonatto, Paulo Fernando Ribeiro. Smart grid educational resources for undergraduate students. 2018 Simposio Brasileiro de Sistemas Eletricos (SBSE). 2018; ():1-6.

Chicago/Turabian Style

Guilherme Henrique Barbosa Dos Santos; Mario Teofilo Silva Vieira; Antonio Carlos Zambroni Zambroni De Souza; Benedito Donizeti Bonatto; Paulo Fernando Ribeiro. 2018. "Smart grid educational resources for undergraduate students." 2018 Simposio Brasileiro de Sistemas Eletricos (SBSE) , no. : 1-6.

Proceedings article
Published: 01 May 2018 in 2018 Simposio Brasileiro de Sistemas Eletricos (SBSE)
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The present work aims to analyze, using economic feasibility techniques such as NPV, IRR and payback, the investment in solar panels by universities, taking as an example, the panels installed on the campus of the Federal University of Itajubá. To perform this analysis, data collected through a supervisory system in the years 2016 and 2017 of the photovoltaic system installed in one of the university buildings were used. With this, one can evaluate the investment indexes with old and updated values and provide parameters for investors in the sector who intend to produce energy through this equipment.

ACS Style

I. C. Oliveira; A C. C. F. Rosa; B. D Bonatto; H. Arango; J. L. R. Pereira; P. F. Ribeiro. Analysis of economic return of the installation of photovoltaic panels at the campus of the Federal University of Itajubá. 2018 Simposio Brasileiro de Sistemas Eletricos (SBSE) 2018, 1 -6.

AMA Style

I. C. Oliveira, A C. C. F. Rosa, B. D Bonatto, H. Arango, J. L. R. Pereira, P. F. Ribeiro. Analysis of economic return of the installation of photovoltaic panels at the campus of the Federal University of Itajubá. 2018 Simposio Brasileiro de Sistemas Eletricos (SBSE). 2018; ():1-6.

Chicago/Turabian Style

I. C. Oliveira; A C. C. F. Rosa; B. D Bonatto; H. Arango; J. L. R. Pereira; P. F. Ribeiro. 2018. "Analysis of economic return of the installation of photovoltaic panels at the campus of the Federal University of Itajubá." 2018 Simposio Brasileiro de Sistemas Eletricos (SBSE) , no. : 1-6.