Title :
Efficiency analysis of a high-temperature superconducting induction heater
Author :
Magnusson, Niklas ; Runde, Magne
Author_Institution :
SINTEF Energy Res., Trondheim, Norway
fDate :
6/1/2003 12:00:00 AM
Abstract :
In an induction heater for heating of aluminum billets, the main reason for using high-temperature superconducting (HTS) tapes instead of conventional copper conductors is to reduce the large power losses in the induction coil. In this work we present how to calculate the different loss contributions of an induction heater based on HTS tapes. Calculations of these losses are used in the design of an HTS induction heater with a rated power of about 10 kW operating at liquid nitrogen temperature. The calculations predict an optimal current that yields the highest efficiency of the induction heater.
Keywords :
aluminium; high-temperature superconductors; induction heating; process heating; superconducting coils; 10 kW; AC losses; Al; Al billets; HTS coil; HTS induction heater; HTS tapes; heater efficiency; high-temperature superconducting tapes; liquid nitrogen temperature; loss contributions; optimal current; Aluminum; Conducting materials; Conductors; Copper; Current density; High temperature superconductors; Magnetic fields; Superconducting coils; Superconducting films; Transformers;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2003.812807
