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Zero-Current Switching (ZCS) for a High Step Ratio Modular Multilevel dc-dc Converter with wide voltage range operation
(IEEE, 2020)
The rise of new dc technologies is pushing the development of highly efficient dc-dc converters, especially at high voltage and high step ratio. Modular multilevel converters (MMCs) are an attractive alternative because ...
Controle hierárquico e adaptativo para aumento do desempenho operacional de reguladores de tensão em redes elétricas inteligentes
(Universidade Federal de Santa MariaBrasilEngenharia ElétricaUFSMPrograma de Pós-Graduação em Engenharia ElétricaCentro de Tecnologia, 2014-03-28)
The evolution of equipment, new functions and control algorithms, supervisory systems, automation and smart grids offer to utilities numerous conditions for improving the voltage profile and the rational use of its equipment ...
Optimal ZCS Modulation for BidirectionalHigh-Step-Ratio Modular Multilevel dc-dc Converter
(2021)
Recent developments in dc powered technologies have increased interest in highly efficient dc-dc converters, especially at high voltage and high-step voltage ratios. Modular multilevel converters (MMCs) are an attractive ...
Metodologia para controle de reguladores de tensão em redes elétricas de distribuição utilizando simulação digital em tempo real
(Universidade Federal de Santa MariaBrasilUFSMCentro de Tecnologia, 2019-07-03)
Throughout its transportation, from generation to final consumption, the electrical energy fluctuates its voltage levels. These variations are natural and provided by the system itself, but without effective corrections, ...
Triangular/trapezoidal current mode for high step ratio modular multilevel dc-dc converter
(2022)
Recent developments in dc powered technologies have increased interest in highly efficient dc-dc converters, especially at high voltage and high-step voltage ratios. Modular multilevel converters (MMCs) are an attractive ...
Comparison Between Voltage Control Structures of Synchronous Machines
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2010)
This paper compares the behaviour of two different control structures of automatic voltage regulators of synchronous machines equipped with static excitation systems. These systems have a fully controlled thyristor bridge ...
A low-cost neurostimulator with accurate pulsed-current control
(Institute of Electrical and Electronics Engineers (IEEE), 2002-05-01)
A constant-current stimulator for high-impedance loads using only low-cost standard high-voltage components Is presented. A voltage-regulator powers an oscillator built across the primary of a step-up transformer whose ...
A low-cost neurostimulator with accurate pulsed-current control
(Institute of Electrical and Electronics Engineers (IEEE), 2002-05-01)
A constant-current stimulator for high-impedance loads using only low-cost standard high-voltage components Is presented. A voltage-regulator powers an oscillator built across the primary of a step-up transformer whose ...