STGW19NC60WD is an igbt. It's wasteful at 20V (the 2V or more drop x 2) but OK at line voltage (40A rating to handle 2A).
Since you're only handling 400VA, a 50 Hz transformer is sort of practical (if a little heavy), and it only needs one stage (20V PWMed into a 14:230 winding) as suggested by Hero999.
But even as low as 40VA, I have cheap (US$20) inverters that take two steps; create 180V first (500 kHz switching supply) then switch it into 120VAC rms "modified sine wave". (I prefer to call it modified square wave
).