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Please use this identifier to cite or link to this item: http://hdl.handle.net/10651/43829

Title: LCC Resonant Multilevel Converter for X-ray Applications
Author(s): Martín Pernía, Alberto
José Prieto, Miguel Ángel
Villegas Saiz, Pedro José
Díaz González, Juan
Martín Ramos, Juan Antonio
Keywords: AC/DC converter
High voltage
Resonant conversion
Issue date: 13-Oct-2017
Publisher: MDPI
Publisher version: http://www.mdpi.com/1996-1073/10/10/1573
Citation: Energies, 1573, p. 1-16 (2017); doi:10.3390/en10101573
Format extent: p. 1-16
Abstract: Medical X-ray appliances use high-voltage power supplies that must be able to work with very different energy requirements. Two techniques can be distinguished in X-ray medical imaging: fluoroscopy and radioscopy. The former involves low power radiation with a long exposure time, while radioscopy requires large power during short radiographic exposure times. Since the converter has to be designed by taking into account the maximum power specification, it will exhibit a poor efficiency when operating at low power levels. Such a problem can be solved by using a new multilevel LCC topology. This topology is based on a classical series-parallel resonant topology, but includes an additional low-voltage auxiliary transformer whose function depends on the X-ray technique considered. When radioscopy operation is selected, the transformer will allow the power to be shared between two full-bridges. If fluoroscopy mode is activated, the auxiliary full bridge is disconnected and the magnetizing inductance of the auxiliary transformer is used to increase the resonant inductor in order to reduce the resonant currents, thus improving the efficiency of the converter
URI: http://hdl.handle.net/10651/43829
Sponsored: This work has been co-funded by the Plan of Science, Technology and Innovation of the Principality of Asturias through Project FC-15-GRUPIN14-122, and by the Spanish Government with the action TEC2014-53324-R.
Project id.: TEC2014-53324-R
Appears in Collections:Artículos
Ingeniería Eléctrica, Electrónica, de Computadores y Sistemas
Investigaciones y Documentos OpenAIRE

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