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Experimental validation of a nested control system to balance the cell capacitor voltages in hybrid MMCs
(IEEE, 2021)
In a hybrid modular multilevel converter (MMC), capacitor voltage balance between the Full-Bridge Sub-Modules (FBSMs) and Half-Bridge Sub-Modules (HBSMs) is only possible when the arm currents are bipolar. For a grid-connected ...
Teorias de potência conservativa e instantânea: análise comparativa
(Universidade Estadual Paulista (UNESP), 2015)
El incumplimiento como causa de ruptura del equilibrio económico del contrato
(Departamento de Derecho Económico, 2018-02-16)
Este artículo aborda las distintas circunstancias que pueden dar lugar a la ruptura del equilibrio económico del contrato estatal y se centra, particularmente, en el incumplimiento de la entidad contratante. Así, la Ley ...
Controle ressonante aplicado a um DSTATCOM para a regulação de tensão de geradores de indução autoexcitados
(Universidade Federal de Santa MariaBrasilEngenharia ElétricaUFSMPrograma de Pós-Graduação em Engenharia ElétricaCentro de Tecnologia, 2019-08-02)
This master’s thesis presents contributions to the control applied to the voltage regulation of autonomous
microgeneration systems based on Self-Excited Induction Generators (SEIGs). The
generation system consists of a ...
Decoupled PI Controllers Based on Pulse-Frequency Modulation for Current Sharing in Multi-Phase LLC Resonant Converters
(2021)
The LLC series resonant converter has emerged as a solution to applications requiring power conversion with isolation, reduced volume and high efficiency, such as PV systems and EV chargers. However, the LLC resonant ...
Novel Expert System For Defining Power Quality Compensators
(Elsevier Ltd, 2015)
Avaliação dos parâmetros clínicos e laboratoriais de bezerros com diarréia neonatal naturalmente adquirida
(Universidade Federal de Minas GeraisUFMG, 2009-02-11)
The creation of calves is one of the most difficult stages in production of dairy cattle, because the high costs of labor-power exacerbated by high mortality. At this stage, the neonatal diarrhea constitute the main group ...
The Real Plan: Stabilization and destabilization
(2000-01-01)
The paper analyzes Brazil's Real Plan, an exchange-rate based stabilization program, implemented in 1994, which mixed a spectacular price stabilization with some serious macroeconomic destabilization. The paper focuses on ...