Evaluation and Conclusions
This work had its roots in the belief that a deeper understanding of the electromagnetic power conditioning mechanism is necessary in order to keep pace with the trend towards an ever increasing frequency-power product in switchmode converter technology. Circuit design with the objective of keeping skin effect and proximity effect tosses a minimum has been identified as a major criterion in the optimisation of high frequency converters. Overall, four major contributions emerged from this effort: firstly, energy flow modelling as a means of gaining insight into the mechanism of power conditioning; secondly, an algorithm has been devised to analyse structural impedances; thirdly, a new set of equations have been derived to model skin and proximity effect losses in magnetic components; and lastly, an experimental method has been devised to measure the ac resistance of magnetic components.
KeywordsMagnetic Component Poynting Vector Structural Impedance Power Conditioning Strip Conductor
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- HJ Kaul; “Stray-current losses in stranded windings of transformers.” Trans. of AIEE, 76(30) 1957, ppl37–149.Google Scholar
- JA Ferreira; “Tweedimensionele analisc van transformator/irKluktor-wikkeliiigs, deel 1: die oplos van parasitere strome.” RAU Internal Report - END-33.Google Scholar
- B Carsten ; “High frequency conductor losses in switchmode magnetics” PCI (Power Conversion International) June 1986 Proceedings (Munich), ppl 61–182.Google Scholar
- JP Vandelac, P Ziogas ; “A novel approach to high frequency transformer copper losses” 1987 PESC Conference Record (Blacksburgh), pp355–367.Google Scholar
- L Bonte, J van Campenhout; “A simplified high frequency network presentation of power pulse transformers for switched mode dc-dc converters and dc-ac inverters” 1985 EPE Conference Record (Brussel),ppl.35–142.Google Scholar