3 Phase in / 3 Phase out - FORTE SERIES
10kVA - 400kVA
On-Line Double Conversion “3Level IGBT” Technology
Die FORTE Serie zeichnet sich durch HÖCHSTE ENERGIEEFFIZIENZ mit 3Level IGBT Rectifier & Inverter Technology aus!
COMPARISON OF THE 2-LEVEL AND MULTILEVEL INVERTERS:
In 2-level inverter output voltage waveform is produced by using withtwo voltage levels. This causes the output voltage and current to be distorted and the THD of the voltage is poor. In 3-level inverter output voltage and current is much more sinusoidal and the THD is better. In 2-level inverter the efficiency of the whole system is dominated by the rectifier losses in light loads. In 3-level inverter the efficiency at full load is better than in 2-level inverter. This means better energy capture of the system. Better efficiency at rated power means also smaller heat sink and better reliability. Efficiency of the 3-level inverter at small power is alsoimproved. The value of P/Pmax is reduced at the knee by 50%.
2-level converter efficiency. Semiconductor conduction and switching loses included
3-level converter efficiency. Semiconductor conduction and switching loses included
In the determination of inverter configuration, usually the cost comparison of different configurationshas to be executed. The cost of inverter is affected mainly by the DC-link capacitor, IGBTand the filtering components, while the rest electronics have quite insignificant affectsgood estimation of inverter costs can be done comparing the costs of capacitor and IGBT. The impact of filtering cost can be significant.