Loss-optimized active neutral-point clamped inverter in a lowinductive power-module design

Inhalt:
The ANPC topology is becoming the dominant solution in solar applications due to its increased flexibility with respect to modulation strategies and consequently to the energy flow. Combining the advantages of 1200 V CoolSiC(TM) MOSFET technology with 950 V TRENCHSTOP(TM) IGBT7 in a low-inductive powermodule design, a new ANPC inverter is implemented in an Easy3B package. This solution prevents parasitic effects such as IGBT forward recovery, and allows higher switching speed by reducing the stray inductance in the main commutation loop. Consequently, the system-power density increases, while less sophisticated modulation strategies can be utilized.