Banca de DEFESA: Pedro Henrique de Queiroz Rocha

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : Pedro Henrique de Queiroz Rocha
DATE: 22/07/2022
TIME: 14:30
LOCAL: Sala de reuniões do Departamento de Engenharia Mecânica - FT - Darcy Ribeiro
TITLE:

VIBRATION CONTROL OF A WIND TOWER USING HYBRID MASS DAMPER

KEY WORDS:

Hybrid mass damper; Structural Control, Wind Turbine; Linear Quadratic Regulator; Tuned Mass Damper.

PAGES: 68
BIG AREA: Engenharias
AREA: Engenharia Mecânica
SUMMARY:

The increase in energy consumption leads to a great expansion of the world energy generation with various energy sources, among them renewable sources are increasingly highlighted. Wind energy is one of the sources that has been gaining more and more spotlight in the hall of generators, which consequently brings more studies on the structural reliability of wind towers that can cause undesirable levels of vibrations that can compromise the safety and reliability of the structure. This work proposes the application of a structural control system, in a way of an hybrid mass damper (HMD), installed in a wind tower, subjected to seismic and wind loads. Two models are analyzed: considering or not the flapwise effect on the blades. Furthermore, it is proposed to compare the system response for different situations: system without control, passive control, active control and hybrid controllers (Instantaneous Optimal Control (IOC), Proportional Integral Derivative (PID) and Classic Optimum (LQR)). Numerical-computational simulations were performed using the software MAPLESOFT, MATLAB with toolbox Simulink. The numerical results obtained were analyzed and compared with each other, and it was observed that the IOC was the better in reducing the dynamic response of the tower. Although the results of this work are based on simplified models with preliminary results, they may become a basis for more advanced studies in sophisticated models and full-scale applications.

BANKING MEMBERS:
Interna - 1436914 - CARLA TATIANA MOTA ANFLOR
Interno - 1619095 - MARCUS VINICIUS GIRAO DE MORAIS
Presidente - 2213675 - SUZANA MOREIRA AVILA
Externo à Instituição - ZENON JOSE GUZMAN DEL PRADO - UFG