DC-DC converter for discharging energy storage magnets

Author

Eyssa, Yehia M. ; Xianrui Huang

Author_Institution

Nat. High Magnetic Field Lab., Tallahassee, FL, USA

Volume

30

Issue

4

fYear

1994

fDate

7/1/1994 12:00:00 AM

Firstpage

2665

Lastpage

2668

Abstract

A new DC-DC converter to control the output power delivered from a magnetic energy storage magnet or an equivalent current source is discussed. The circuit consists of:(1) highly coupled transformer (air or iron core) with coupling coefficient better than 0.95; (2) low frequency mechanical or superconducting switches (0.1-10 Hz) or high frequency (10-1000 Hz) GTO switches depending on the application; (3) small voltage source (capacitor or battery) to control the output voltage. Two examples illustrating the application of this circuit are discussed. They are a step up dc current converter for use in uninterruptible power supplies and a step down one for use in discharging large current storage coil into a small current load. The efficiency expected to exceed 90 %

Keywords

power convertors; superconducting magnet energy storage; uninterruptible power supplies; DC-DC converter; SMES; energy storage magnet discharge; highly coupled transformer; large current storage coil; output voltage; small current load; small voltage source; step down DC current converter; step up DC current converter; superconducting switches; uninterruptible power supplies; Coupling circuits; DC-DC power converters; Energy storage; Frequency; Iron; Magnets; Power generation; Superconducting magnetic energy storage; Switches; Switching circuits;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.305828

Filename

305828