Conducted EMC modeling for accreditation in DC-DC converters

Grobler, I.; Gitau, Michael Njoroge

doi:10.1109/iecon.2015.7392450

Cited by 9 publications

(1 citation statement)

References 6 publications

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“…These values are then distributed into the 4-cell model in Fig. 3 (b) [26], adding minor adjustments such as the 25 kΩ damping resistor, the 0.1 pF line capacitance and copper ground sheet parameters extracted from the measured impedance plot in Fig 3 (c), incorporating the in-band resonance. The verified impedance plot in Fig.…”

Section: B Power Feed Line Modellingmentioning

confidence: 99%

Modelling and measurement of high‐frequency conducted electromagnetic interference in DC–DC converters

Grobler

Gitau

2017

IET Science, Measurement & Technology

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Abstract-Conducted EMC noise qualification tests are normally carried out after a prototype has been designed, built and tested and the process is repeated in the event of non-compliance. The ability to determine compliance with EMI standards at the design stage is therefore desirable. This paper will present conducted EMC noise modelling and measurement techniques, yielding simulated and measurement noise results accurate enough to serve as a prequalification test at the design and prototyping stages respectively.Accurate models of the power feed-line connecting the LISN to the DUT (converter), including the load are developed. Predictive conducted EMC modelling is accomplished using detailed active level 3 SPICE-based models, creating a real-time circuit model consisting of a complete converter in its operational state, without the need to separate into equivalent models. Effects of the power feed-line length on EMI noise measurements are investigated as currently available literature has not dealt adequately with this issue. To detect possible radiating frequencies that might emerge with the conducted noise and are detectable in the conducted emission test, results have to be accurate not just in the prescribed frequency band, but all the way up to 100 MHz. The modelling and measurements are performed using software and instruments available in a development laboratory.

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Section: B Power Feed Line Modellingmentioning

confidence: 99%