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In this paper the impact of pulse-loads on a six-pack IGBT power module is presented using Finite Element (FE) computations. The FE model solves the heat transfer equations which determine the thermal behavior of the six-pack IGBT module. The approach is such that the IGBT switching loss is calculated using a time domain circuit simulation model, then the results are used as input data for the FE...
One of the most important protective devices in power system is fuses. It is important to know the thermal behavior of a fuse for an optimized design as well as for a right choice of the fuse rating with the aim to protect the power system. Passing the current from the fuse leads to hot the fuse element and open the current path and interrupt the fault current. So, the temperature of the fuse directly...
In variable speed drives thermal phenomena interfere with electromagnetic ones. Moreover, when it comes to electrical machines excited through permanent magnets (PMs), beside the common problems related to the stator winding insulation damage (at high levels of current densities) and mechanical stress (due to centrifugal forces while high speed is attempted) a supplementary issue appears: the PM irreversible...
We investigated discharging characteristics of a Bi-2223/Ag coil by means of thermo-electromagnetic coupled analysis. The objective was to evaluate the thermal behavior of conduction-cooled high temperature superconducting (HTS) coils when they are applied to superconducting magnetic energy storage (SMES) systems for voltage dip compensation. The electromagnetic analysis adopted finite element method...
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