Search Results - "Neves, Francisco S."

A Review of Grid Connection Requirements for Photovoltaic Power Plants by G. Landera, Yandi, C. Zevallos, Oscar, Neto, Rafael C., Castro, Jose F. da Costa, Neves, Francisco A. S.

“…The increasing rate of renewable energy penetration in modern power grids has prompted updates to the regulations, standards, and grid codes requiring…”
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A Generalized Delayed Signal Cancellation Method for Detecting Fundamental-Frequency Positive-Sequence Three-Phase Signals by Neves, Francisco A S, Cavalcanti, Marcelo Cabral, de Souza, Helber Elias Paz, Bradaschia, Fabrício, Bueno, Emilio J, Rizo, Mario

“…A novel scheme for obtaining the fundamental-frequency positive-sequence grid voltage vector based on a generalization of the delayed signal cancellation…”
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Energy Efficient Path Planning for 3D Aerial Inspections by Claro, Rafael M., Pereira, Maria I., Neves, Francisco S., Pinto, Andry M.

“…The use of Unmanned Aerial Vehicles (UAVs) in different inspection tasks is increasing. This technology reduces inspection costs and collects high quality data…”
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Zero-Phase FIR Filter Design Algorithm for Repetitive Controllers by de Lima, Pedro V. S. G., Neto, Rafael C., Neves, Francisco A. S., Bradaschia, Fabrício, de Souza, Helber E. P., Barbosa, Eduardo J.

“…Repetitive controllers (RCs) are linear control structures based on the internal model principle. This control strategy is known for its ability to control…”
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Decoding Reinforcement Learning for Newcomers by Neves, Francisco S., Andrade, Gustavo A., Reis, Matheus F., Aguiar, A. Pedro, Pinto, Andry Maykol

“…The Reinforcement Learning (RL) paradigm is showing promising results as a generic purpose framework for solving decision-making problems (e.g., robotics,…”
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Eliminating Leakage Currents in Neutral Point Clamped Inverters for Photovoltaic Systems by Cavalcanti, M. C., Farias, A. M., Oliveira, K. C., Neves, F. A. S., Afonso, J. L.

“…The main contribution of this paper is the proposal of new modulation techniques for three-phase transformerless neutral point clamped inverters to eliminate…”
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Modulation Techniques to Eliminate Leakage Currents in Transformerless Three-Phase Photovoltaic Systems by Cavalcanti, M.C., de Oliveira, K.C., de Farias, A.M., Neves, F.A.S., Azevedo, G.M.S., Camboim, F.C.

“…In some photovoltaic (PV) applications, it is possible to remove the transformer of a system in order to reduce losses, cost, and size. In transformerless…”
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Modulation for Three-Phase Transformerless Z-Source Inverter to Reduce Leakage Currents in Photovoltaic Systems by Bradaschia, F., Cavalcanti, M. C., Ferraz, P. E. P., Neves, F. A. S., dos Santos, Euzeli C., da Silva, J. H. G. M.

“…In this paper, a modified Z-source inverter (ZSI) with specific modulation techniques is proposed to reduce leakage currents in three-phase transformerless…”
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Digital Filters for Fast Harmonic Sequence Component Separation of Unbalanced and Distorted Three-Phase Signals by Neves, F. A. S., de Souza, H. E. P., Cavalcanti, M. C., Bradaschia, F., Bueno, E. J.

“…In this paper, two methods for determining the fundamental frequency and harmonic positive- and negative-sequence components of three-phase signals are…”
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Control of PV Systems for Multimachine Power System Stability Improvement by Landera, Yandi G., Zevallos, Oscar C., Neves, Francisco A. S., Neto, Rafael C., Prada, Ricardo B.

“…The goal of achieving decarbonized operation of power systems in response to climate change has led to an increase in the number of sources connected to…”
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Variable-Structure Generalized Delayed Signal Cancellation PLL to Improve Convergence Time by Batista, Ygo N., de Souza, Helber E. P., Neves, Francisco A. S., Dias Filho, Roberto F., Bradaschia, Fabricio

“…This paper shows a scheme for improving the detection performance of the fundamental-frequency positive-sequence (FFPS) space vector through the generalized…”
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Control of Photovoltaic Inverters for Transient and Voltage Stability Enhancement by Zevallos, Oscar C., Silva, Jose B. Da, Mancilla-David, Fernando, Neves, Francisco A. S., Neto, Rafael C., Prada, Ricardo B.

“…The increasing number of megawatt-scale photovoltaic (PV) power plants and other large inverter-based power stations that are being added to the power system…”
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Coordinated Control of Active and Reactive Power Compensation for Voltage Regulation with Enhanced Disturbance Rejection Using Repetitive Vector-Control by Zimann, Felipe J., Stangler, Eduardo V., Neves, Francisco A. S., Batschauer, Alessandro L., Mezaroba, Marcello

“…Voltage profile is one of many aspects that affect power quality in low-voltage distribution feeders. Weak grids have a typically high line impedance which…”
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Unified Approach to Evaluation of Real and Complex Repetitive Controllers by Neto, Rafael C., Neves, Francisco A. S., De Souza, Helber E. P.

“…Repetitive controllers (RCs) are known for their ability of controlling periodic exogenous signals, even if these signals have high harmonic content. Due to…”
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A Space-Vector Discrete Fourier Transform for Unbalanced and Distorted Three-Phase Signals by Neves, F A S, de Souza, H E P, Bradaschia, F, Cavalcanti, M C, Rizo, M, Rodriguez, F J

“…In this paper, a space-vector discrete-time Fourier transform is proposed for fast and precise detection of the fundamental-frequency and harmonic positive-…”
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The SVFT-Based Control by Neves, Francisco A. S., Arcanjo, Maherbson A. C., Azevedo, Gustavo M. S., de Souza, Helber E. P., Viltre, Lesyani T. Leon

“…In this paper, a controller based on the space vector Fourier transform (SVFT) is proposed. The vector controller is implemented in the stationary αβ reference…”
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Complex nk + m Repetitive Controller Applied to Space Vectors: Advantages and Stability Analysis by Neto, Rafael C., Neves, Francisco A. S., de Souza, Helber E. P.

“…Repetitive controllers represent an attractive solution for systems having periodic reference or disturbance signals with high harmonic content. In order to…”
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Fast Phase Angle Jump Estimation to Improve the Convergence Time of the GDSC-PLL by Andrade, Daniel Soares dos Santos, Batista, Ygo Neto, Neves, Francisco A. S., de Souza, Helber Elias Paz

“…The fast detection of magnitude, frequency, and phase angle of the fundamental-frequency component is very useful in many three-phase power system…”
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A Complex Repetitive Controller Based on the Generalized Delayed Signal Cancelation Method by Zimann, Felipe J., Neto, Rafael C., Neves, Francisco A. S., de Souza, Helber E. P., Batschauer, Alessandro L., Rech, Cassiano

“…In this paper, a generic complex repetitive controller (nk + m RC, k ∈ Z), based on the inverse transfer function of the generalized delayed signal cancelation…”
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Energy storage system control algorithm for voltage regulation with active and reactive power injection in low-voltage distribution network by Zimann, Felipe J., Batschauer, Alessandro L., Mezaroba, Marcello, Neves, Francisco A.S.

“…•Voltage regulation using combined active and reactive power.•Control algorithm for active energy minimization in voltage regulation.•A comparative analysis…”
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