Banca de QUALIFICAÇÃO: LUCAS LEONARDO LOPES SILVA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : LUCAS LEONARDO LOPES SILVA
DATE: 01/08/2023
TIME: 10:30
LOCAL: Remoto
TITLE:

Factors that affect the performance loss of wind turbines during aging: framework proposal

KEY WORDS:

Keywords: Aging, Wind turbines, Factors, Framework, Systematic bibliographical review.

PAGES: 140
BIG AREA: Engenharias
AREA: Engenharia de Produção
SUBÁREA: Engenharia do Produto
SUMMARY:

The wind energy was already used as primary source of energy generation since before 1700 B.C, the old European civilizations used kinetic energy for sail, while windmills were used to help with farming tasks. At electricity generation, the wind energy is the primary source for the aerogenerators working, that convert some of this kinetic energy on electricity. With the technological progress, aerogenerators are modernizing with use of more efficient components, however, like any other machine, the wind turbines are subjects to the effects of time, that is, aging. The aging decreases the production capacity, increase the number of components fails, grow up the frequency of maintenance routines and increase the cost linked to the final product produced by these machines, the electricity. From that, this research was with objective to understand how the aging affect the performance decrease of aerogenerators, mapping linked factors at this effect. This study has realized was realized in 2 steps: the theoretical substantiation (1), constructed by a traditional bibliographical review and a systematic bibliographical review, that, was with aim, mapping the related factors with performance decline at aging, followed by a factor’s validation (2), by one survey research, applied by two distinct questionnaires, one qualitative in a semi-structured scripted interview and the other quantitative applied to a larger sample, this procedure made it possible to analyze whether the mapped factors and the constructed hypotheses were consistent with the functioning of these machines. A preliminary analysis of results allowed a construction of framework, tool that helps at grouping of mapped factors and the formulation of cause-and-effect hypotheses, the factors was grouped by similarities of your characteristics on dimensions, resulting on 5 dimensions: Climatic events, Installation site geography, Effectiveness of monitoring and predictions systems, Maintenance performance and aging, furthermore, the preliminary validation process of hypotheses has showing coherency, reinforce the negative effects of aging on wind turbines.

COMMITTEE MEMBERS:
Externo à Instituição - HUMBERTO DIONISIO DE ANDRADE - UFERSA
Interna - 1777131 - MARIANA RODRIGUES DE ALMEIDA
Presidente - 2456706 - MARIO ORESTES AGUIRRE GONZALEZ