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 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 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 …

Design of continuous-time model reference adaptive and super-twisting sliding mode controller

GV Hollweg, PJD de Oliveira Evald… - … and Computers in …, 2022 - Elsevier
This paper presents a continuous-time Robust Model Reference Adaptive and Super-
Twisting Sliding Mode controller and its stability analysis by means of Lyapunov stability …

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 …

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 …

Adaptive super-twisting sliding mode for DC-AC converters in very weak grids

G Vieira Hollweg, P Dias de Oliveira Evald… - … Journal of Electronics, 2023 - Taylor & Francis
This paper presents the design of a direct-type adaptive control structure for current
regulation of a single-phase grid-tied Voltage-Source Inverter (VSI) with an LCL filter under …

A new discrete‐time PI‐RMRAC for grid‐side currents control of grid‐tied three‐phase power converter

PJ Dias de Oliveira Evald… - … on Electrical Energy …, 2021 - Wiley Online Library
In this work, a new discrete‐time direct robust adaptive PI controller is developed and
applied on grid‐side currents control of a three‐phase full‐bridge static converter connected …

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 …

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 …