Thats a very good article you posted .
I'm surely gonna spend some more time to read it and have it sink in .
Personaly when i encountered this i struggleth my way through Pressman & Brown .
Both of them absolute great books when it comes to smps design .
No book will ever save you for the trial and inevitable error .
I hope for you that this aint your first smps .
If it is i hope you are religious cause you gonna need the lord almighty to save your mosfets .
Anyway i don't want to send you home with empty hands .
The following 2 links are from a Polish magazine ,its a DIY welding inverter .
But its in Polish
the schematics should bring you on the right path .http://www.ep.com.pl/pobierz.php?id=12162http://www.ep.com.pl/pobierz.php?id=12199
Although i have to add when this is your first smps project 2 KW is very big for a first try .
Good luck .