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 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 …

Self-tuning methodology for adaptive controllers based on genetic algorithms applied for grid-tied power converters

GV Hollweg, PJD de Oliveira Evald, E Mattos… - Control Engineering …, 2023 - Elsevier
The performance and stability of adaptive controllers is highly dependent on its parameter
initialization. For non-expert designers, the parametrization of these controllers can be …

A robust adaptive super-twisting sliding mode controller applied on grid-tied power converter with an LCL filter

GV Hollweg, PJD de Oliveira Evald… - Control Engineering …, 2022 - Elsevier
This paper presents a new robust adaptive controller, totally developed on discrete-time.
This controller is composed by two control structures: a Robust Model Reference Adaptive …

A direct adaptive controller with harmonic compensation for grid-connected converters

GV Hollweg, PJD de Oliveira Evald… - IEEE Transactions …, 2023 - ieeexplore.ieee.org
Grid-connected converters are uncertain time-varying systems, whose controllers must deal
with the relevant inductive content and high harmonic distortion of the sampled voltages …

An optimal initialisation for robust model reference adaptive PI controller for grid-tied power systems under unbalanced grid conditions

PJD de Oliveira Evald, GV Hollweg, LC Borin… - … Applications of Artificial …, 2023 - Elsevier
This paper presents an Optimal Robust Model Reference Adaptive Proportional–Integral
controller for grid-tied power systems, which is automatically parametrised using a Genetic …

A robust adaptive one sample ahead preview controller for grid-injected currents of a grid-tied power converter with an LCL filter

DMC Milbradt, GV Hollweg… - International Journal of …, 2022 - Elsevier
This paper presents the development of a discrete-time Robust Adaptive One Sample
Ahead Preview controller, based on the combination of a Robust Model Reference Adaptive …

Lyapunov stability analysis of a robust model reference adaptive PI controller for systems with matched and unmatched dynamics

PJD de Oliveira Evald, GV Hollweg… - Journal of the Franklin …, 2022 - Elsevier
In this paper, the discrete-time Lyapunov stability analysis of a Robust Model Reference
Adaptive PI (Proportional-Integral) Controller is presented. The mathematical development …

Adaptive control of grid-connected inverters with nonlinear LC filters

H Safamehr, TA Najafabadi… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
Distributed generation is an effective solution to clean, reliable, and cost-efficient energy
supply. In this framework, inverters play a key role as energy converters. Accordingly, this …

Feasibility assessment of adaptive sliding mode controllers for grid-tied inverters with LCL filter

GV Hollweg, PJD de Oliveira Evald, E Mattos… - Journal of Control …, 2022 - Springer
This paper proposes a comparative performance analysis between two robust adaptive
controllers grounded on Robust Model Reference Adaptive Control (RMRAC) and Sliding …