Grid-connected converters: A brief survey of topologies, output filters, current control, and weak grids operation

GV Hollweg, SA Khan, S Chaturvedi, Y Fan, M Wang… - Energies, 2023 - mdpi.com
Grid-connected converters (GCCs) are used extensively for the integration of DC power
sources with AC power sources. However, since it is a complex topic, there are many …

A hybrid robust model reference adaptive controller and proportional integral controller without reference model for partially modeled systems

PJDO Evald, GV Hollweg, RV Tambara… - … Journal of Adaptive …, 2023 - Wiley Online Library
This work presents the discrete‐time stability analysis of a hybrid robust model reference
adaptive controller and proportional‐integral controller (MRAC‐PI) controller using …

Deep reinforcement learning based control of a grid connected inverter with LCL-filter for renewable solar applications

A Rajamallaiah, SPK Karri, ML Alghaythi… - IEEE …, 2024 - ieeexplore.ieee.org
This research paper presents a novel approach to current control in Grid-Connected
Inverters (GCI) using Deep Reinforcement Learning (DRL) based Twin Delayed Deep …

Enhancement of a grid-connected DFIG wind turbine system using fractional order PI controllers

AS Veerendra, K Peddakapu - Renewable Energy Focus, 2023 - Elsevier
The wind velocities are unpredictable, and generating power with persistent speed is difficult
which comprises mechanical stress at the rotor that leads to poor efficiency. So, variable …

A smart parametrisation for robust adaptive PI controller applied on renewable energy power generation systems under weak and uttermost weak grid conditions

PJD de Oliveira Evald, GV Hollweg, LC Borin… - Computers and …, 2024 - Elsevier
The increasing penetration of renewable energy systems into the global energy matrix is a
necessity for sustainable development. The benefits impact the well-being of humanity and …

Automated test-driven design for robust optimized current control of GTIs operating under normal and abnormal grid conditions

LC Borin, GV Hollweg, CRD Osório… - Control Engineering …, 2024 - Elsevier
Many current controllers are designed based on linear models, which may lead to poor
performance when limiting its variables to a safe operation region, or even lead to instability …

Exploring evolutionary-tuned autoencoder-based architectures for fault diagnosis in a wind turbine gearbox

SM Gbashi, OO Olatunji, PA Adedeji… - Smart Science, 2024 - Taylor & Francis
Vibration-based fault diagnosis from rotary machinery requires prior feature extraction,
feature selection, or dimensionality reduction. Feature extraction is tedious, and …

Predicting pressure loss of turbulent non-Newtonian fluids in annuli under temperature and pipe rotation effects using optimization algorithms

E Ulker, SO Korkut Uysal, M Sorgun - Chemical Engineering …, 2025 - Taylor & Francis
Accurate estimation of frictional pressure loss in an annulus is crucial for selecting
appropriate pump systems, determining horsepower requirements, and controlling hole …

An Evolutionary-based Parametrization of Robust Adaptive Second-Order Sliding Mode Controller Applied on Grid-injection Control of Grid-tied Converters with LCL …

WB da Silveira, PJD de Oliveira Evald… - 2023 15th Seminar …, 2023 - ieeexplore.ieee.org
This work presents an evolutionary-based parametrization for a new discrete-time robust
adaptive second-order sliding mode controller. The automatic design procedure is …

Artificial intelligence applications in solar energy

TT Le, TT Le, HC Le, P Paramasivam, N Chung - JOIV: International Journal …, 2024 - joiv.org
Renewable energy research has become significant in the modern period owing to
escalating prices of fossil fuels and the pressing need to reduce greenhouse gas emissions …