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HVDC transmission systems based on voltage source converters have lately emerged as a good alternative to conventional AC transmission. In these transmission systems multilevel converters have become a promising energy conversion technology. The reliability of the power converters are extremely important since a fault in these equipments may lead to an unavailability for a long period of the transmission...
The purpose of this paper is to present and discuss the voltage droop compensation associated with long pulses generated by solid-state bipolar or unipolar high-voltage Marx modulators. In particular a novel design scheme for voltage droop compensation based on resonant circuit in solid-state bipolar (positive and/or negative pulses) high-voltage Marx generator, using off-the-shelf components, design...
This paper presents the design and implementation of direct power controllers for three-phase matrix converters (MC) operating as Unified Power Flow Controllers (UPFC). Theoretical principles of the decoupled linear power controllers of the MC-UPFC to minimize the cross-coupling between active and reactive power control are established. From the matrix converter based UPFC model with a modified Venturini...
This paper describes a new resonant converter topology, using a solid-state asymmetric bridge to increase the energy efficiency of the solid-state switching circuit being designed to replace the actual pulse transformer and thyratron based resonant modulator that supplies the 60 kV target potential for the ion acceleration of the On-Line Isotope Mass Separator ISOLDE accelerator. The preliminary results...
This paper presents a bridgeless single-stage, single phase circuit topology consisting in the association of a full-bridge isolated DC-DC converter with only one input inductor connected to the grid and two rectifier diodes, to provide sinusoidal input current wave shaping. The use of a bridgeless input rectifier allows the proposed topology to present high efficiency, 91.7%. To avoid transformer...
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