Comparison of radiated emissions from different heatsink configurations

Author

Dolente, Andrea ; Reggiani, Ugo ; Sandrolini, Leonard

Author_Institution

Dept. of Electr. Eng., Bologna Univ., Italy

fYear

2005

fDate

21-24 June 2005

Firstpage

49

Lastpage

53

Abstract

This paper investigates by means of numerical simulations the influence that different heatsink configurations have on the generation of radiated emissions. The effects of a subdivision of the heatsink among the different switching devices of a switched-mode power supply are examined. The plots of the electric near field for different excitation conditions are analyzed in terms of the surface current density distribution on the heatsink configurations. The electric far field as a function of frequency is obtained transforming the time-domain waveforms into the frequency domain and the influence of the heatsink geometry and source location is discussed.

Keywords

current density; current distribution; electromagnetic compatibility; heat sinks; numerical analysis; switched mode power supplies; time-frequency analysis; electric far field; electric near field; frequency domain waveform; heatsink configuration; numerical simulation; radiated emission generation; surface current density distribution; switched-mode power supply; switching device; time-domain waveform; Conductors; Current density; Electromagnetic compatibility; Electromagnetic radiation; Reservoirs; Resistance heating; Switched-mode power supply; Time domain analysis; Underwater cables; Water resources;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility and Electromagnetic Ecology, 2005. IEEE 6th International Symposium on

Print_ISBN

0-7803-9374-0

Type

conf

DOI

10.1109/EMCECO.2005.1513059

Filename

1513059