PPGEE

Programa de Pós-graduação
em Engenharia Elétrica

UFRGS

Defesa Pública da Dissertação de Mestrado do Engenheiro Eletricista Bruno Henz Mossmann

Data: 14/09/2021 - terça-feira
Horário: 15h30min

A defesa será realizada através de videoconferência na plataforma Teams, pelo link: https://teams.microsoft.com/l/meetup-join/19%3a4ff43273f35644e7ab8462dfa0cf21d9%40thread.tacv2/1630966277299?context=%7b%22Tid%22%3a%22b34c1d55-a43e-4a20-9218-a1a42eab149a%22%2c%22Oid%22%3a%22248c1e6b-aa68-403c-adfb-ad2a0ac261ed%22%7d

Banca Examinadora:
Prof. Dr. Daniel Sbarbaro - Departamento de Ingeniería Eléctrica – Universidad de Concepción (Chile)
Prof. Dr. Alexandre Sanfelici Bazanella - PPGEE – UFRGS
Dr. Charles Lorenzini - Longhi Engenharia e Automação
Presidente da banca/Orientador: Prof. Dr. Luís Fernando Alves Pereira - PPGEE - UFRGS
Coorientador: Prof. Dr. João Manoel Gomes da Silva Junior - PPGEE - UFRGS

Título da dissertação: "TUNING OF RESONANT CONTROLLERS BASED ON THE FREQUENCY RESPONSE "

Resumo:
"Resonant controllers are introduced to fulfil the increased demand for controllers capable to follow or reject periodic signals with superior performance than conventional PID ones. The main characteristic of these controllers is the infinite gain in the frequency of interest, which can lead to stability problems and makes their design and tuning more complex. This work presents the computation of resonant controllers parameters based on a frequency response method, using stability margins and sensitivity functions as indicators of performance and stability for the controlled system. In addition, the combination with a phase-lead compensator is proposed to allow better performance in an augmented bandwidth. The method is extended for multiple frequency modes in order to deal with higher harmonic content, resulting in the multi-resonant controller. The proposed method is tested using different classes of processes found in typical control problems.

Keywords: Resonant controllers, frequency response, periodic signals, phase-lead compensators, proportional-resonant controllers, proportional-multi-resonant controllers."