Sine wave power inverter

[Mateus]

Thanks a lot for the reply,Walcura.

However I can manage snubber calci for Flyback and other SMPS.My problem is with inverter H-bridge snubbers.
Please give any info. if you have or find somewhere.

regards

Hello Mincing !

It is probably too late for an answer, but i am new here. Anyway if you still have the problem with Snubber, you could try the following paper, which in my concept is very good. In fact it is for IGBT´s protection but it can give you some help. It is supposed that MOSFETs do not require Snubber networks meanwhile they have peak diode recovery dv/dt > 3 V/ns, but i am not completely sure about this statement.

Good Luck.

Snubber considerations for IGBT applications.pdf

http://www.irf.com/technical-info/designtp/tpap-5.pdf