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This paper presents different experimental methods for measuring parasitic capacitances and inductances of direct copper bond (DBC) based power semiconductor modules. The found parasitics are compared with finite element simulations to evaluate their accuracy. A very good match of the simulated and measured stray capacitances is found. The parasitics, which are found via simulations and experiments,...
In this paper a 2 MW dc-dc converter is presented and design criteria are carried out. It deals with the preliminary design for the hardware implementation. The power supply shall have multiple targets such as an PV emulator or supply for a dc-micro grid in the research facility National Center for Reliable Electric Power Transmission of the University of Arkansas. The converter is designed for an...
Commonly known analytical prediction methods for winding loss in switched reluctance machines provide comparatively inaccurate results but are very fast. Finite element analyses, however, yield rather exact results but at high computational cost. This paper introduces harmonic superposition as a third approach that promises sufficiently accurate loss estimations at low computational cost. At that...
Copper loss calculation in switched reluctance machines is important to predict efficiency and to predict temperature hotspots in the machine. Established calculation methods for alternating current (AC) copper losses are either inaccurate or time consuming. This paper presents a tool chain for copper loss calculation which enables fast and accurate model building and simulation procedure. Employment...
A comprehensive vibration synthesis process for synthesizing the electromagnetically excited acoustic vibrations in electric drives is explored in this paper. The study is performed on a traction drive for a hybrid electric vehicle. The work derives and highlights several key aspects for modeling and assessing the acoustic characteristics of electric drives. The influence of different force excitation...
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