NDLI: Computer Aided Analysis of a Multi-Winging Flyback Converter Including the EMI Line Filter

Content Provider	IEEE Xplore Digital Library
Author	Rogne, Terje Steinbakk, Arne
Copyright Year	1987
Description	Author affiliation: The Norwegian Research Institute of Electricity Supply A/S, N-7034 Trondheia-NTH, Norway (Rogne, Terje; Steinbakk, Arne)
Abstract	A two-transistor flyback-converter, originally built to be used as a measure object for measuring electromagnetic interference is thoroughly analyzed by using the circuit analysis programme KREAN. the flyback converter is operated in current-mode using the switchmode control-IC UC3842. Input voltage is 230 V mains. The output is on multiple windings with a total power of 260 W. The analysis is split into 3 major sections: 1. Regulator parameters. One of two secondary windings is regulated in a PI voltage regulator loop, with an inner current loop controling the (primary) transistor-current. The secondary windings are simulated with different leakage inductances. The unregulated output voltage is studied with low and high load, with fixed load at the regulated voltage. 2. Switchinq behaviour. The converter is simulated with leakage inductance in both primary and secondary windings of the transformer, and in the paths of the freewheeling diodes. Parasitic capacitances are included across the primary and secondary windings of the transformer and across drain-source of the transistors. 3. EMI-line-filter. Two major sources of EMI are simulated and Fourier transformed to find the expected conducted noise levels from the converter with and without the EMI line filter. The results are compared to measurements on the actual converter, and show acceptable accuracy.
Starting Page	472
Ending Page	479
File Size	6088335
Page Count	8
File Format	PDF
ISBN	9178109167
DOI	10.1109/INTLEC.1987.4794599
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1987-06-14
Publisher Place	Sweden
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Computer aided analysis Electromagnetic interference Filters Current measurement Electromagnetic measurements Regulators Electromagnetic analysis Circuit analysis Switching converters Switching circuits
Content Type	Text
Resource Type	Article

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