A transformerless boost-resonant DC-DC converter with high voltage ratio for MVDC applications

This paper presents a novel electronic transformerless boost-resonant DC-DC converter intended for interconnecting renewable power sources to high or medium voltage DC grids. The proposed DC-DC converter has two inductances, one capacitor and five switches. The resonant converter section is a two el...

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Bibliographic Details
Main Authors: Anaya-Ruiz, G. A., Moreno-Goytia, E. L., Ugalde-Caballero, L. E., Venegas-Rebollar, V.
Format: Conference Proceeding
Language:English
Subjects:
DC-DC converter
HVDC link
MTDC
MVDC
RES
Online Access:Request full text
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Summary:This paper presents a novel electronic transformerless boost-resonant DC-DC converter intended for interconnecting renewable power sources to high or medium voltage DC grids. The proposed DC-DC converter has two inductances, one capacitor and five switches. The resonant converter section is a two element configuration, one resonant inductor and one resonant capacitor, while the boost converter section has a boost inductor. The proposed converter has advantages compared to other converters: 1) has the possibility of connecting in a modular way, in order to increase profits 2) reduced number of components in comparison with the others topologies, 3) the possibility of reach ZVS. This paper discusses a classification ofDC-DC converters topologies and the principles of operation of proposed converter as well as the control, the modular connection, and simulations altogether to probe the effectiveness of the converter. Finally, a case of study of a HVDC link, using the proposed converter as a sending node and a MMC converter as a reception node, is carried out.
ISSN:2573-0770
DOI:10.1109/ROPEC.2018.8661453