Vol.7, No.1, February 2018.                                                                                                                                                                     ISSN: 2217-8309

                                                                                                                                                                                                                eISSN: 2217-8333


TEM Journal



Association for Information Communication Technology Education and Science

Direct Off-Line Two-Switch Forward Converter with a Boost PFC Converter for Powering of DC

Electromagnet Systems


Borislav Dimitrov


© 2018 Borislav Dimitrov, published by UIKTEN. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License. (CC BY-NC-ND 4.0)


Citation Information: TEM Journal. Volume 7, Issue 1, Pages 3-12, ISSN 2217-8309, DOI: 10.18421/TEM71-01, February 2018.


Received: 29 October 2017
Accepted: 07 December 2017
Published: 23 February 2018




In this paper a switch mode power supply design for electromagnet systems is presented. It is based on a boost converter with power factor correction and a two-switch forward converter. The powered electromagnetic systems in this research are part of various electrical contact apparatus such as electromagnetic contactors, relays, circuit breakers etc. The proposed schematic works in a wide input voltage range which solve the problem with the voltage sag occurring in the energy distribution system. The proposed solution ensures stable operation of the contact equipment and the relay circuits in their industrial application.


Keywords – Switch Mode Power Supply, Boost converter, Power Factor Correction, Forward Converter, Electromagnetic System.



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