National Repository of Grey Literature 42 records found  beginprevious33 - 42  jump to record: Search took 0.00 seconds. 
Sdružená přímovazební a zpětnovazební řídicí strategie paralelního hybridního filtru pro potlačení harmonických
Škramlík, Jiří ; Valouch, Viktor
The strategy features a small sensivity against a disturbed supply voltage system and enables us to set grid phase currents in the phase with respective voltages. The experimental data show that the modified control strategy yields better results than those obtained by using control systems reported previously, especially in case of an unsymmetrical and non-sinusoidal voltage system and the demand of zero reactive power withdrawn from the grid
Control Strategy of Parallel Hybrid Filter for Harmonic Mitigation
Škramlík, Jiří ; Valouch, Viktor
The strategy features a small sensitivity against a disturbed supply voltage system and enables us to set grid phase currents in the phase with respective voltages. The expected properties of the PHF control system have been confirmed by experimental tests in the laboratory. The data show that the modified control strategy yields better results than those obtained by using control systems reported previously, especially in case of an unsymmetrical and non-sinusoidal voltage system and the demand of zero reactive power withdrawn from the grid.
Short-Circuit Protection of IGCT Voltage Source Inverters through the Use of Semiconductor Fuses
Bartoš, Stanislav ; Semerád, Radko ; Škramlík, Jiří
The power switching devices IGCT exhibit high values of the parameter I2t. This property enables their short-circuit protection by the so called semiconductor fuses. For both the thyristors and the rapid semiconductor fuses, the parameter I2t is usually defined for a half-sine current wave with the duration of 10 ms. However, in the dc feeding line of an inverter, the short-circuit waveforms are strongly different, and the best way to find the proper fuse for protection is to employ appropriate computer software.

National Repository of Grey Literature : 42 records found   beginprevious33 - 42  jump to record:
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2 Škramlík, Jan
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