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Análise da estabilidade de conversores conectados a redes elétricas com baixo SCR
(Universidade Federal de Santa Maria, 2021-07-22)
This Ph.D. thesis presents an analysis on the influence of the synchronism system
on three-phase converters connected to weak grid combining state space approaches
and matrix transfer functions. The generation system ...
Uma abordagem para atestar a suportabilidade dielétrica a formas de onda não padronizadas nos ensaios de equipamentos de alta tensão
(Universidade Federal de Santa Maria, 2021-08-31)
The non-standard waveforms caused by high frequency transients pose a challenge when it comes to their representation in testing high-voltage equipment. Such a challenge is worrisome for electric power utilities and ...
Um controlador adaptativo robusto por modelo de referência e Super-Twisting Sliding Mode aplicado na regulação de corrente de conversores conectados à rede com filtro LCL
(Universidade Federal de Santa Maria, 2021-12-03)
This thesis presents the development of an RMRAC-STSM control structure, composed
by a robust model reference adaptive controller (RMRAC) along with an adaptive Super-
Twisting Sliding Mode (STSM) controller. A continuous ...
Contribuições para a modelagem, analise, projeto e controle do conversor ressonante LLC driver de LED
(Universidade Federal de Santa Maria, 2021-06-11)
This work presents several contributions to the modeling, analysis, design, and control of the LLC
resonant LED driver. Initially, the LLC resonant LED driver dynamic model accuracy is improved by
taking into account ...
Contribuições ao projeto de controladores robustos a variações paramétricas aplicados a conversores conectados à rede
(Universidade Federal de Santa Maria, 2021-05-12)
This Ph.D. thesis provides contributions to the design of robust current controllers
for grid-connected converters, including: i) a time-varying model to deal with the
magnetic soft saturation in the filter inductors and ...
Controle hierárquico distribuído com separação de atribuições para paralelismo de UPS
(Universidade Federal de Santa Maria, 2021-06-19)
This work presents a distributed hierarchical control strategy applied to the parallelism
of UPSs. A dynamic approach with separation of concerns is proposed for the
secondary control, where a named grid forming inverter ...
Modelagem eletrotérmica e caracterização de elementos parasitas de placas de circuito impresso de conversores estáticos CC/CC
(Universidade Federal de Santa Maria, 2021-08-11)
This doctoral thesis presents the development of an analythical method to characterize
the parasitic elements and surface temperatures in a synchronous boost power converter.
Initially is presented the bibliography review ...
Sistema de gerenciamento do armazenamento de energia residencial perante eventos meteorológicos severos
(Universidade Federal de Santa Maria, 2021-01-27)
Home energy management systems operating with storage systems in markets with differentiated
tariff, should identify ideal solutions for transacting stored energy with the electricity
grid, minimizing customer costs. On ...
Metodologia para restabelecimento parcialmente dinâmico de energia elétrica em sistemas de distribuição com possibilidade de operação ilhada de microrredes
(Universidade Federal de Santa Maria, 2021-01-18)
This study presents a decision-making model for the dynamic reconfiguration of
distribution networks after contingency situations based on formulations of the selfhealing
problem with islanding. This work develops a ...
Concepção e análise de estratégias de gerenciamento de potência aplicadas ao controle de nanorredes C.C. com barramentos interconectados
(Universidade Federal de Santa Maria, 2021-12-13)
This thesis proposes the conception and analysis of power management strategies applied to the control of multiple buses dc nanogrids. Nanogrids are small-scale commercial and residential prosumer electrical installations ...