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A physical approach of the test voltage function for evaluation of the impulse parameters in lightning impulse voltages with superimposed oscillations and overshoots
(Institute of Electrical and Electronics Engineers, 2016-10)
The introduction of the test voltage function or k-factor in IEC 60060-1 Ed. 3 has been an important step to ensure reproducibility and traceability in high voltage tests techniques for lightning impulses with superposed ...
ANALYTIC STUDY ON HIGH-VOLTAGE CROWBAR SYSTEM
(Japan J Applied Physics, 1995-10-01)
Crowbar switches are largely used in plasma devices, such as field-reversed configuration (FRC) machines and tokamaks, to avoid energy return from the discharge coil to the capacitor bank. A method of identification of all ...
ANALYTIC STUDY ON HIGH-VOLTAGE CROWBAR SYSTEM
(Japan J Applied Physics, 1995-10-01)
Crowbar switches are largely used in plasma devices, such as field-reversed configuration (FRC) machines and tokamaks, to avoid energy return from the discharge coil to the capacitor bank. A method of identification of all ...
Energy Balancing Improvement of Modular Multilevel Converters under Unbalanced Grid Conditions
(Institute of Electrical and Electronics Engineers, 2017-08)
This paper presents a feedback/feed-forward control strategy to improve the voltage balancing of modular multilevel converters (MMCs) under unbalanced grid conditions. The inclusion of a feed-forward compensation improves ...
Modelling of the influence of the layer pollution thickness in high voltage polluted insulators
(1995-12-01)
An experimental model and a mathematical model with the introduction of a ramp in the channel of Obenaus model are presented. The aim is to present a better reproduction of the real layer pollution deposited on the HV ...
Modelling of the influence of the layer pollution thickness in high voltage polluted insulators
(1995-12-01)
An experimental model and a mathematical model with the introduction of a ramp in the channel of Obenaus model are presented. The aim is to present a better reproduction of the real layer pollution deposited on the HV ...
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 ...