Novel high voltage conversion ratio “Rainstick” DC/DC converters

Author

Kasper, Matthias ; Bortis, Dominik ; Kolar, Johann Walter

Author_Institution

Power Electron. Syst. Lab., ETH Zurich, Zurich, Switzerland

fYear

2013

fDate

15-19 Sept. 2013

Firstpage

789

Lastpage

796

Abstract

Voltage conversions with high step-down ratios are required in many medium voltage applications for supplying auxiliary electronics. In this paper a new topology for high conversion ratios with low voltage stresses of components, modular structure and simple control is presented. The operation principles are described together with analytical descriptions of the average value of the inductor currents and RMS values of the switches. In addition, the influence of the efficiency of the individual modules on the total converter efficiency is provided. Possible modifications of the “Rainstick” converter with benefits for different applications are shown. Furthermore, the measurement results of a prototype with an input voltage range of up to 2.4 kV and 30 W output power are shown.

Keywords

DC-DC power convertors; inductors; switches; RMS value; Rainstick DC-DC converter; converter efficiency; high voltage conversion ratio; inductor current; medium voltage application; voltage stress; Capacitors; Inductors; Logic gates; Power electronics; Power supplies; Stress; Topology;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition (ECCE), 2013 IEEE

Conference_Location

Denver, CO

Type

conf

DOI

10.1109/ECCE.2013.6646783

Filename

6646783