Hi,
I can not really calculate switching and conduction losses at IGBT.
The conduction loss for any device (mechanical switch, MOSFET, IGBT...):
P_tot = U x I (during ON state)
(Where:
U is the voltage across the device during ON time
I is the current through the device during ON time)
If you have a PWM signal, then the duty_cycle comes into play. Where duty_cycle is the percentage of ON time in relation to the total time.
P_tot = U x I x dutyCycle
Usually you know the value of "I" of your application. Then with the use of "I" you should fing the corresponding "U" in the datasheet)
*****
Try this and come back with the values and results.
BTW: Each IGBT manufacturer and each MOSFET manufacturer and each gate_driver manufacturer should have application notes about how to calculate the losses.
Sooner or later you should read through them. I recommend to do it "sooner" ;-)
Klaus