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Analysis of EMI Reduction Effect of a Magnetorheological Fluid-Gap Inductor in a DC/DC Converter.
- Source :
- IEEE Transactions on Magnetics; Mar2015, Vol. 51 Issue 3, p1-4, 4p
- Publication Year :
- 2015
-
Abstract
- In this paper, the electromagnetic interference reduction effect of a magnetorheological (MR) fluid-gap inductor in a dc/dc converter is investigated. For a realistic electromagnetic simulation, a prototype MR fluid-gap inductor is built and put in a typical buck converter setup, and the current waveform of the inductor is measured. Based on the measured current waveform, a 3-D time domain finite element electromagnetic analysis is performed considering non-linearity of an MR fluid and complex geometry of the winding. The rms and maximum values of the leakage flux and eddy current losses of the MR fluid-gap inductor are calculated and compared with those of the air-gap inductor. It is predicted that the eddy current heat source due to the leakage flux from the gap is reduced by as much as 75.6% for the MR fluid-gap inductor. To verify the simulation data, the leakage fluxes of both MR fluid-gap and air-gap types of inductors are measured in a dc/dc converter setup, and their experimental results are compared with calculated ones. [ABSTRACT FROM PUBLISHER]
Details
- Language :
- English
- ISSN :
- 00189464
- Volume :
- 51
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- IEEE Transactions on Magnetics
- Publication Type :
- Academic Journal
- Accession number :
- 102288131
- Full Text :
- https://doi.org/10.1109/TMAG.2014.2358675