PWM methods providing phase voltage symmetry of dual- inverter fed drives: Systems modeling and simulation

نویسنده

  • Valentin OLESCHUK
چکیده

Algorithms of space-vector-based synchronized pulsewidth modulation (PWM) have been applied for control of dual-inverter fed open-end winding induction motor drives supplied by two isolated dc-sources with non-equal voltages. Results of modeling and simulation of these systems proved the fact, that techniques of synchronized PWM provide continuous phase voltage symmetry (quarter-wave symmetry, or half-wave symmetry) for any ratios (integral or fractional) between the switching and fundamental frequencies of dual-inverter systems on the base of either standard inverters or neutral-point-clamped inverters, and also for any ratios between voltages of two dc-sources of the system. Streszczenie. W artykule przedstawiono możliwość sterowania napędem silnika indukcyjnego zasilanego za pośrednictwem dwóch izolowanych źródeł napięcia stałego o nierównych napięciach. Do tego celu wykorzystano podwójny przekształtnik bazujący na algorytmie synchronizowanej modulacji szerokości impulsu PWM. (Podwójny napęd przekształtnikowy wykorzystujący metodę PWM)

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تاریخ انتشار 2013