| Summary: | 碩士 === 國立清華大學 === 動力機械工程學系 === 92 === Circuit design operated at higher frequency has been the mainstream in recent technology development of power electronics. As commercial simulation tools being fully developed for circuit design and analysis, it has been the main topic of research for utilizing the software to enhance design productivities. Nevertheless, due to the unavailability of commercial magnetic materials models operated at high frequency with losses consideration and various materials availability in the market, it is the main objective of this thesis to provide circuit designers with the capabilities on establishing the magnetic materials models for advanced circuit analysis.
The main losses of magnetic materials operated at high frequency consist of hystersis losses and eddy current losses. In this study, Jiles and Atherton Model (JA model) have been adopted for modeling hystersis characteristic equations employed in OrCAD PSpice simulation packages. Based upon the Analog Behavior Model (ABM) technique adopted in the package, the effects of the eddy current losses on hystersis phenomenon has been incorporated into considerations. Furthermore, application circuits have been simulated for verifications of the theoretical operation principle and effectiveness of circuits that contain magnetic components. Finally, ladder-network models employed for treating copper windings losses have been established for further consideration of proximity and skin effects in the windings.
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