Next Article in Journal
Battery State-Of-Charge Estimation Based on a Dual Unscented Kalman Filter and Fractional Variable-Order Model
Previous Article in Journal
Assessment of Bearing Capacity and Stiffness in New Steel Sets Used for Roadway Support in Coal Mines
Article Menu

Export Article

Open AccessArticle
Energies 2017, 10(10), 1573; doi:10.3390/en10101573

LCC Resonant Multilevel Converter for X-ray Applications

Department of Electrical Engineering, University of Oviedo, 33203 Gijón, Asturias, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Gabriele Grandi
Received: 25 July 2017 / Revised: 12 September 2017 / Accepted: 9 October 2017 / Published: 12 October 2017
View Full-Text   |   Download PDF [4198 KB, uploaded 12 October 2017]   |  

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. View Full-Text
Keywords: AC/DC converter; fluoroscopy; high voltage; multilevel; radioscopy; resonant conversion; X-ray AC/DC converter; fluoroscopy; high voltage; multilevel; radioscopy; resonant conversion; X-ray
Figures

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Pernía, A.M.; Prieto, M.J.; Villegas, P.J.; Díaz, J.; Martín-Ramos, J.A. LCC Resonant Multilevel Converter for X-ray Applications. Energies 2017, 10, 1573.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top