I've been looking for some high amperage, low voltage rectifiers for a simple project (Rectifying various modified transformers). The voltage has been as low as 2.8v and I'm suspecting it is capable of about 350430A (at that voltage as the transformers are rated at 1000 and 1,200 watts). I have found one rectifier that seems nice for the $$ but may not work well with such low a voltage.
https://www.ebay.com/itm/NewMDQ40...441466&hash=item2837d8d1b4:g:fsYAAOSwpONZRPbw
I've read that full wave bridge rectifiers can be made by using mosfets, specifically IGBT's and SCR, but I'm not certain if it is possible to make one that can handle this high an amperage (though the notes I've read said they were capable of very high amperages with almost no forward voltage loss).
I'd like to build one if possible and I need to order the parts necessary for this, so if anyone has any experience with this, I'd really appreciate suggestions on where to go with this and if what I am doing is possible. I'm still kind of green when it comes to electronics so I may not have used the correct terminology to describe the usage of the mosfets. I do know that the setup required 4 of them to function properly (at least maybe in a full bridge..?)
Finally, if I am looking for parts, what feature of the IGBT or SCR determines the forward voltage loss and amperage (is the standard amperage rating what I look at or would it be calculated differently when being used in this application?).
So if I found IGBT's rated at 40A, would I need 40 of them to make this work (that's if they can be paralleled) so 40A * 10 pieces, then each bridge needs 4 pieces?
I'm not sure if these would work but they seem to be priced attractively and rated at 200A.
GT30J127 30J127
Spec sheet
https://www.ebay.com/itm/NewMDQ40...441466&hash=item2837d8d1b4:g:fsYAAOSwpONZRPbw
I've read that full wave bridge rectifiers can be made by using mosfets, specifically IGBT's and SCR, but I'm not certain if it is possible to make one that can handle this high an amperage (though the notes I've read said they were capable of very high amperages with almost no forward voltage loss).
I'd like to build one if possible and I need to order the parts necessary for this, so if anyone has any experience with this, I'd really appreciate suggestions on where to go with this and if what I am doing is possible. I'm still kind of green when it comes to electronics so I may not have used the correct terminology to describe the usage of the mosfets. I do know that the setup required 4 of them to function properly (at least maybe in a full bridge..?)
Finally, if I am looking for parts, what feature of the IGBT or SCR determines the forward voltage loss and amperage (is the standard amperage rating what I look at or would it be calculated differently when being used in this application?).
So if I found IGBT's rated at 40A, would I need 40 of them to make this work (that's if they can be paralleled) so 40A * 10 pieces, then each bridge needs 4 pieces?
I'm not sure if these would work but they seem to be priced attractively and rated at 200A.
GT30J127 30J127
Spec sheet
Attachments

220.9 KB Views: 3