NDLI: Integrated water cooled transformer and work coil for middle frequency induction heating applications

Content Provider	IEEE Xplore Digital Library
Author	Swart, S.M. Ferreira, J.A.
Copyright Year	1993
Description	Author affiliation: Energy Lab., Rand Afrikaans Univ., Johannesburg, South Africa (Swart, S.M.; Ferreira, J.A.)
Abstract	An integrated water-cooled transformer and single-turn work coil for middle-frequency induction heating application is proposed. The secondary of the transformer is an extension of the work coil, and the primary is situated within the hollow, water-cooled secondary. An advantage of the construction is liquid cooling of work coil, coaxial transformer, and switching devices. The coaxial construction of the transformer achieves low leakage inductance, which gives better coupling between the converter and the workpiece. Simulations were conducted to compare the multi-turn and single-turn coils with respect to work coil efficiency, and the difference in current distributions is investigated. It is shown that a single-turn work coil can be more effective than the normal multi-turn work coil and the coaxial transformer has less leakage inductance than other transformers. Different cross-sectional shapes of the single-turn coil and different winding geometries of the transformer are investigated by means of simulation. A prototype integrated transformer and work coil was constructed, and experimental results are presented.<>
Starting Page	1219
Ending Page	1225
File Size	490931
Page Count	7
File Format	PDF
ISBN	078031462X
DOI	10.1109/IAS.1993.299053
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1993-10-02
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Coils Geometry Inductance Solid modeling Liquid cooling Shape Water heating Prototypes Current distribution Coaxial components
Content Type	Text
Resource Type	Article

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