Light transformers for kilowattt SMPS based on nanocrystalline softmagnetic cores

• Published in: IEE conference publication pp. 411 - 415
• Main Author: Ferch, M
• Format: Conference Proceeding
• Language: English
• Published: London IEE 1998
• Subjects: Applied sciences; Electrical engineering. Electrical power engineering; Exact sciences and technology; Inductors and transformers; Magnetic cores; Magnetic materials; Power convertors and power supplies to apparatus; Power electronics, supply and supervisory circuits; Transformers and inductors; switching frequency; iron alloys; 1.2 T; nanocrystalline SiFe alloy; VITROPERM; switched mode power supplies; transformer; transformer cores; high-performance IGBT; nanostructured materials; SiFe; nanocrystalline soft magnetic cores; soft magnetic materials; high frequency soft magnetic alloys; SMPS; high-frequency transformers; 10 to 20 kHz; silicon alloys; Electric transformer; Magnetic alloy; Insulated gate bipolar transistor; Light; Power supply; Soft core model; Experimental study; High frequency; Switching; Nanocrystal
• ISBN: 0852967047; 9780852967041
• ISSN: 0537-9989
• DOI: 10.1049/cp:19980560

With high-performance IGBTs and advanced high frequency 1.2 Tesla soft magnetic alloys, switched mode power supplies (SMPS) can now be designed for the power range up to several 100 kW with a single transformer only. The weight-to-power ratio of transformers so far has reached a level of up to only 100 g/kW when using new nanocrystalline SiFe alloy VITROPERMTM at a switching frequency of typical 10-20 kHz. The result are quite compact and lightweight SMPS with excellent efficiency.