Single phase voltage converter for traction applications – simulation and investigation
نویسنده
چکیده
Single phase voltage converter structure with isolation transformer for applications in traction vehicles is presented. This paper shows simulation model of this type of converter and transformer model with modern magnetic material in OrCAD-PSpice simulation program. Two PWM control techniques are compared in order to eliminate voltage and current oscillations in primary winding of the transformer, decrease large peaks of current, decrease large system loss and improve system efficiency. Author shows a comparison of the PSpice simulation results with the real results. Streszczenie. W artykule przedstawiono strukturę jednofazowego przekształtnika napięcia z izolacją transformatorową dla zastosowań w pojazdach trakcyjnych. Zaprezentowano modele symulacyjne przekształtnika oraz transformatora z nowoczesnych materiałów magnetycznych, opracowane w programie OrCAD-PSpice. Porównano dwie metody sterowania przekształtnikiem, pozwalające na eliminację oscylacji w uzwojeniu pierwotnym transformatora, zmniejszenie przeregulowań prądowych oraz strat, i zwiększenie sprawności układu. Porównano wyniki symulacyjne z wynikami pracy przekształtnika rzeczywistego. (Napięciowy przekształtnik jednofazowy do aplikacji trakcyjnych – symulacja i badania)
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