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My 12kW powerjack build - Ozinverter Inspiration!
influence:
So after the secondary is wound. Lets check 1 turn on this transformer to see if we are within our specs...
Using the lightbulb dropper method. Basically as described in other topics, you take a 240v lightbulb and put it in
series with the secondary winding....you wire a switch over the bulb terminals to allow you to short the bulb after
its lit. I then wound 1 turn as a primary...to measure the 1 turn voltage...and voila we have over 5V on the one turn...
Im happy...lets wind the primary next!
influence:
Ok primary winding time! Now if I reckon I was sore winding the secondary...guess again...
I was seriously buggered after winding 3 lots of 25mm2 together....
3 lots in parallel gives you 75mm2 effective cross section..but with slightly better heat dissipation.
See the RP7 regular sized can as a reference to size of this monster :)
influence:
Now lets check the outputs...
Im happy with 29.5V ...this means it will work quite well at lower battery voltages...
My battery banks are 2000Ah each...so a total of 4000Ah is available to this monster.
Stay tuned. I will be assembling the noise filter choke next....
oztules:
Bigger than any I have wound thus far. As you have plenty of room, it would not be a bad thing to add a few more turns to the primary, and so get even further than the saturation point. This will help get iron losses down further before you use the inductor.
That thing is huge.
.......oztules
influence:
Unfortunately two reasons I cannot wind more...one there is no more room and two it would raise the primary another 5V if I wind one more turn...
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