Abstract
It is considered in the article the magnetic coupling between inductances of input and output capacitors’ leads for capacitors reducing differential mode noise in key-type power supplies. It is showed that the magnetic coupling mentioned above significantly reduces the insertion loss at frequencies above 0,50–1 MHz. It is investigated mutual-perpendicular arrangement of those capacitors as a method of reducing the magnetic coupling, and showed that such an arrangement increased the insertion loss of the filter for differential mode noise about 20 dB in the frequency range 1...20 MHz. References 9, figures 5.
References
Atabekov G.I. Theoretical basics of electrical engineering. Part 1. Linear electrical circuits. 3-rd edition. – Moskva-Leningrad: Energiia, 1966. – 320 p. (Rus)
Gurin V.K., Pavlovskyi V.O., Yurchenko O.M. Self-parasitic and mutual parasitic parameters in power line filters for switching mode power supplies // Tekhnichna elektrodynamika. Tematychnyi vupusk "Problemy suchasnoi elektrotekhniky." – 2012. – №2. – Pp. 119–120. (Ukr)
Gurin V.K., Pavlovskyi V.O., Yurchenko O.M. Reduction methods of mutual parasitic in RFI filters for key-type power supplies // Tekhnichna elektrodynamika. Tematychnyi vupusk "Problemy suchasnoi elektrotekhniky." – 2012. – №1. – Pp. 24–26. (Ukr)
GOST 13661-92. Electromagnetic compatibility of technical equipment. Passive filters and elements for interference suppression. Methods of inserted damping measuring. – 1992. – 34 р. (Rus)
Kalantarov P.L., Tseitlin L.A. Inductances’ calculation. A handbook. – Leningrad: Energoatomizdat, 1986. – 488 p. (Rus)
Pervoi V., Pilinsky V., Rodionova M., Yanushevsky A. Power line filter’s modeling // Sbornik "Pravovoe, normativnoe I metrologicheskoe obespechenie zashchity informatsii na Ukraine". – Kyiv, 2000. – Pp. 170–174. (Rus)
Pilinsky V., Temnіkov V. Power line filters FMPZ-1 / Sbornik "Pravovoe, normativnoe i metrologicheskoe obespechenie zashchity informatsii na Ukraine". – Kyiv, 2001. – 267 p. (Rus)
Dovzhenko A., Pilinsky V., Shvaichenko V., Shvaichenko E. Intelligent Mains Radiofrequency Interference Filters / EMC EUROPE 2010 WROCLAW, 9-th International Symposium on Electromagnetic Compatibility and 20-th International Wroclaw Symposium and Exhibition on Electromagnetic Compatibility. – Wroclaw, September 13–17, 2010. – Pp. 810–813.
S.Wang, R.Chen, J.D.Van Wyk, Fred.C.Lee, W.G. Odentaal. Developing Parasitic Cancellation Technologies to Improve EMI Filter Performance for Switching Mode Power Supplies // IEEE Transactions on Electromagnetic Compatibility. – 2005. – Vol.47. – No.4. – Pp. 921–929.
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Copyright (c) 2023 Array