Grobler, InusGitau, Michael Njoroge2017-08-042017-08-042017-07Grobler, I. & Gitau, M.N. 2017, 'Modelling and measurement of high-frequency conducted electromagnetic interference in DC-DC converters', IET Science Measurement & Technology, vol. 11, no. 4, pp. 495-503.1751-8830 (online)1751-8822 (print)10.1049/iet-smt.2016.0412http://hdl.handle.net/2263/61591Conducted electromagnetic compatibility (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 electromagnetic interference (EMI) standards at the design stage is therefore desirable. This study 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 line impedance stabilisation network to the device under test (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. The modelling and measurements are performed using software and instruments available in a development laboratory.en© The Institution of Engineering and Technology 2017. This paper is a postprint of a paper submitted to IET Science Measurement and Technology and accepted for publication in and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at IET Digital Library.Electromagnetic interference (EMI)DC-DC power convertorsSpice-based modelQualification testPre-qualificationMeasurement techniquesMeasurement noiseHigh frequency (HF)Device under testConducted electromagnetic interferenceSPICESignal interferenceRegulatory complianceElectromagnetic wave interferenceElectromagnetic pulseHigh-frequency conducted electromagnetic interferenceDC-DC convertersElectric invertersConducted EMC noise modellingPower feed lineLine impedance stabilisation networkActive level 3 SPICE-based modelsReal-time circuit modelCircuit simulationElectromagnetic compatibility (EMC)Postprint Article