Freq
That looks cool.
100Khz is not a good starting frequency for 2600W SMPS with that slow IGBT.
I advice you to start with PC SMPS as begining, then you skip to 2600W
Be carefull, SMPS is danger
That looks cool.
100Khz is not a good starting frequency for 2600W SMPS with that slow IGBT.
I advice you to start with PC SMPS as begining, then you skip to 2600W
Be carefull, SMPS is danger
No , it's not 2600w , the topic wast stareted a long time ago , but this i reopened it with a project of 5000w smps , full bridge , and phase shift , i need 97% effiecency
The transformer details :
Vin 390 (after PFC)
primary side 13 turs of 40mm*0.1mm
insulated with kapton tape 35um thick
actually the primary is spilted in two :each 6.5 turns, betwen them is the secondary made by 2*7 turn also with cooper foil , i expect 2*180 v at 40% Duty.
For 5 kw i need 13amps , and that is nothing for this tape , it can easily withstand at 20A
40*0.1=4mm^2
and at a current density of lat say 5 A => 20Amps
Luka if you visit Romania i can find you this cooper foil at 20 usd per 25 meters
The transformer ist's big , the material is 3F3 and the coil former (bobin ) it's made from sticlotextolit (pcb material ) , strong and durable , mounting points are from 3mm cooper wire , a little oversized
The transformer details :
Vin 390 (after PFC)
primary side 13 turs of 40mm*0.1mm
insulated with kapton tape 35um thick
actually the primary is spilted in two :each 6.5 turns, betwen them is the secondary made by 2*7 turn also with cooper foil , i expect 2*180 v at 40% Duty.
For 5 kw i need 13amps , and that is nothing for this tape , it can easily withstand at 20A
40*0.1=4mm^2
and at a current density of lat say 5 A => 20Amps
Luka if you visit Romania i can find you this cooper foil at 20 usd per 25 meters
The transformer ist's big , the material is 3F3 and the coil former (bobin ) it's made from sticlotextolit (pcb material ) , strong and durable , mounting points are from 3mm cooper wire , a little oversized
LOOOOOL that is almost free!!! I say: Yes pleaseLuka if you visit Romania i can find you this cooper foil at 20 usd per 25 meters
any ticker foil would be good for some 100A or so smps
mc 34025 seems to be like sg3525 , not too good for my application , there is time for all
, tomorrow i will check the leacking inductance of the transformer , i could make it rezonant LLC , but i'm afraid that 97% efficency target will miss it . With phase shift , ZVS , it's ideal at this power level.
Yes , indeed , but i will stick with the uc3875
http://bbs.dianyuan.com/bbs/u/21/1094830164.pdf
ZVS ....
I have a problem , i need to switch two tranzistors in pararel irfp460 , each with 4nf gate capacitance ...that 8nf of total charge at 100khz , (without thincking at miller efect ) , so i did find some 9A ic's for those tranzistors , by using GDT , i will use this schematic for each pair of tranzistors, but i can't think on such PNP tranzistor (needs to be a digital one?) , can someone give me an ideea of what to find , the case is irelevant , sot 92 or anything else, and please comment about this circuit
Attachments
Tomorrow ill be in cluj , no i haven't tested yet @ full power , jut at 10% with 90V at input i have to make a snubber for the rectifier , so i'm limited at almost 100V . From simulations the maximum primary current is 22A , at 85%D
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