Home > Search Results: "Celostátní Konference o elektrických pohonech - EP 2005 /29./"
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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Short-circuit protection of thyristor voltage source inverters through semiconductor fuses in their dc supply
 Bartoš, Stanislav ; Semerád, Radko ; Škramlík, Jiří
Semiconductor devices based on the thyristor structure (GTOs, IGCTs, etc.) or power diodes exhibit high values of the parameter I2t. This enables them to be protected by the so called semiconductor fuses. However, in the dc feeding lene of the inverter, the short-circuit waveforms are strongly different from a half-sine wave, and the best way to find the proper fuse is to employ appropriate computer software.
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Noise, vibration and electromagnetic phenomena produced by semiconductor converters in traction vehicles
 Budek, P. ; Chmelíček, M. ; Jehlička, Vladimír ; Škramlík, Jiří
Due to the recent employment of up-to-date control electronic and electromechanical devices in cars of City Mass Transportation, new problems arise concerning the dynamics, noise, and the radiation of electromagnetic fields. Their environmental impacts, however, have not been discussed sufficiently, so far.
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