Title :
Amorphous core transformers for induction heating converters at 25 kHz
Author :
Lupi, S. ; Nunes, M.F.
Author_Institution :
Dept. of Electr. Eng., Padua Univ., Italy
Abstract :
The design and construction of an industrial 25 kHz, 600 kVA power unit with pancake coils are discussed. Criteria for specifying the rated power of the transformer and a comparison with grain-oriented Si-steel transformers are presented. It is shown that the main advantages of using amorphous alloys in this frequency range, in comparison with grain oriented Si-steel cores, are lower first and total costs of the unit for the same output power, higher efficiency values, and reduction of the weight of the transformer.<>
Keywords :
induction heating; power convertors; power transformers; transformer cores; 25 kHz; 600 kVA; amorphous core transformers; grain-oriented Si-steel transformers; induction heating converters; pancake coils; Amorphous magnetic materials; Amorphous materials; Coils; Costs; Electrical equipment industry; Frequency; Magnetic cores; Magnetic materials; Power generation economics; Transformer cores;
Conference_Titel :
Industry Applications Society Annual Meeting, 1990., Conference Record of the 1990 IEEE
Conference_Location :
Seattle, WA, USA
Print_ISBN :
0-87942-553-9
DOI :
10.1109/IAS.1990.152466
