Banca de DEFESA: IGOR OLIANI

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
DISCENTE : IGOR OLIANI
Data: 03/07/2026
HORA: 10:00
LOCAL: https://meet.google.com/ckx-ykin-vky
TÍTULO:

ADVANCED VSCS CONTROLS AND THEIR EFFECTS ON RESONANCES
IN DISTRIBUTION NETWORKS

PÁGINAS: 62
RESUMO:

The growing use of voltage source converters, or Voltage Source Converters (VSCs), in
distribution networks, driven by the penetration of Recursos Energ´eticos Distribu´ıdoss
(REDs) — such as photovoltaic systems, batteries, and electric vehicles — and non-linear
loads, which have required the use of more sophisticated control techniques capable of dealing
with power quality issues, such as the occurrence of harmonic disturbances and resonance
phenomena, and even the presence of multiple agents in the network, as in structures called
Microrredes (MGs). This work investigates the application of the model-based predictive
control technique in the control of power converters and in the power management of
DC MGs. Its contributions are: a harmonic resonance mitigation method in distribution
networks with passive compensation, based on VSC control; an empirical comparison of
the robustness of predictive controls in Motor de Indu¸c˜ao (MI) drives; and, finally, an
energy control for DC MGs with multiple partially uncontrollable fast storage devices.
The research is structured in three axes. The first analyzes the control of the grid-
connected VSC for damping parallel resonances using the resistive load synthesis theory
applied to photovoltaic systems. It explores Voltage-Oriented Control (VOC ) techniques
with PI controllers and Finite Control Set (FCS)-type Model Predictive Control (MPC).
The second compares, through experimental trials, robust predictive control techniques —
RPCC-Deadbeat and RPCC-DTIA — applied to the driving of MIs, aiming to evaluate
their sensitivity to parametric variations and their effectiveness under load variation. The
third proposes the extension of the MPC used in the energy management control of DC
MGs with multiple fast storage devices (for example, Supercapacitor (SC)).
The VSC controls of the on-grid photovoltaic system on-grid for the microgrid are
validated through simulations in the MATLAB®/Simulink environment. In the case of
resonance, the results show that adopting the resistive load synthesis effectively reduces
the resonance risk by attenuating the peak of the impedance profile with only a slight
modification in the generation of the control references. The results for the microgrid
control strategy show that it is possible to ensure its long-term robustness, while short-term
stability is guaranteed by a primary control layer. Finally, the comparison of MPCs for
the MI is carried out through the implementation of the controls in a Digital Signal
Processor (DSP) for a 1 kW drive system. Among the tested algorithms, the RPCC-DTIA
presents the best performance for electric traction, as it shows lower steady-state errors
(in both the presence and absence of parametric variation) and a dynamic performance
comparable to the FCS

 

MEMBROS DA BANCA:
Presidente - Interno ao Programa - 1907748 - ALFEU JOAOZINHO SGUAREZI FILHO
Membro Titular - Examinador(a) Interno ao Programa - 2286312 - JOEL DAVID MELO TRUJILLO
Membro Titular - Examinador(a) Externo à Instituição - JEFFERSON SOUZA COSTA - UFPA
Membro Titular - Examinador(a) Externo à Instituição - ALESSIO IOVINE
Membro Titular - Examinador(a) Externo à Instituição - VINCENT GEORGES DAVID REINBOLD
Membro Suplente - Examinador(a) Interno ao Programa - 1876380 - THALES SOUSA
Membro Suplente - Examinador(a) Externo à Instituição - Luis Felipe Normandia Lourenço - USP