Title :
Development of a 50-60 Hz thermally switched superconducting rectifier
Author :
Shevchenko, O.A. ; ten Kate, H.H.J. ; Krooshoop, H.J.G. ; Markovsky, N.V. ; Mulder, G.B.J.
Author_Institution :
Appl. Superconductivity Centre, Twente Univ., Enschede, Netherlands
fDate :
3/1/1993 12:00:00 AM
Abstract :
A full-wave thermally switched superconducting rectifier, able to operate directly from the mains at the 50-60-Hz frequency, has been developed. Typical design output values of this device are a current of 300 A, a voltage of up to 1 V, an average power of up to 100 VA, and an efficiency better than 95%. The rectification is achieved by means of fast-response switches and an iron core transformer. A simple and reliable algorithm for the rectifier operation, based on the measured current change across the switches, was developed and tested while powering a small magnet. The new features of the rectifier allow for a simplification of the construction and a significant reduction of cost, mass, and volume.<>
Keywords :
rectifiers; superconducting devices; 1 V; 300 A; 50 to 60 Hz; 95 percent; design output values; fast-response switches; full-wave thermally switched superconducting rectifier; transformer; Current measurement; Frequency; Iron; Magnetic cores; Magnetic switching; Rectifiers; Superconducting magnets; Switches; Testing; Transformer cores;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
