Bidirectional DC–DC converter with high gain based on impedance source. Issue 8 (28th June 2019)

• Record Type: Journal Article
• Authors: Ortega, Manuel; Ortega, María Victoria; Jurado, Francisco; Carpio, José; Vera, David
• Is Part Of: IET power electronics. Volume 12:Issue 8(2019)
• Page Start: 2069
• Page End: 2078
• Publication Date: 2019-06-28
• Subjects: DC‐DC power convertors -- power inductors -- switching convertors -- power transistors -- electric impedance; bidirectional DC–DC converter -- impedance source -- impedance network -- step‐up modes -- step‐down modes -- cycle variations -- duty cycle -- passive elements -- semiconductor elements -- switching techniques -- single transistor -- inductor core -- nanocrystalline material -- Z‐red resistance; Power electronics -- Periodicals; 621.31705
• DOI: 10.1049/iet-pel.2018.5385
• Languages: English
• ISSNs: 1755-4535

Abstract

Abstract : This study presents a new bidirectional DC–DC converter with high gains, based on impedance source. The design of the impedance network has been studied in step‐up and step‐down modes. The most significant innovations of the proposed converter are the linearity of the high gains in step‐up and step‐down modes with respect to the cycle variations and a full use of the duty cycle, very few passive and semiconductor elements are needed to implement the converter. The switching techniques are very simple, since only the switching of a single transistor in each mode is required. To improve efficiency, the cores of the inductors have been constructed with nanocrystalline material and the resistance of Z‐red has been reduced as much as possible. Finally, a laboratory prototype has been implemented.