Newbie
Joined: 26/03/2024
Location: United StatesPosts: 39
| Posted: 05:25am 26 May 2024 |
This is the post I been wanting to write. I now have my inverter up and running with no issues with just a few minor changes. I have a many continuous hours on it running PCs, floodlights, motors, drills and just about anything else I can find to try. I seems, my limitations are due to my own experimental generator which hasn't performed as expected. The best coil configuration to get me to the 175-185 window I need is coming up a little short. On average about 170vdc. That conversion only yields about 108-110vac which is about as high as I can turn up the voltage control before the EGS shuts down and blinks undervoltage. As long as I leave it there, I can do about anything I want as long as I add in coils as I add load. Back when I was testing the gen with "dirty" AC I could get much higher voltage out of the same configuration, but I was using AC run caps on the combined output. Now, with a 1000uf cap on my DC output I will see well over 200 but in the end 550hz @170vdc will get you aboue 108vac. I just don`t see any way around that and may have to just live with it. It is very stable though. I`ve tried everything to trip it up but it just keeps on running. If I carelessly add load without increasing power my voltage will drop and at a point the EGS will shut down. No more burning up fets. Nothing even get warm considering its all wired up with light, cheap jumpers. Several here warned me of this board's limitations. A few had doubts it would even work. I like what Murphy`s friend said, "we, the forum here, have moved on by a long way since back then." The undersized choke I`m using, a T-157-52 with as many turns I could stuff on there is only about 1.8mH. The big 650 toroid allowed me to test many configurations from .880mH thru 7.50mH but voltage suffered. Between 2 and 3mh on a T-157 powdered iron core yielded the highest voltage with good stability. I have a great sendust toroid on order and I think about 2.75 to 3mH will be perfect and should give me some improvement. Also I had a 1000uf electrolytic cap on my DC output for a while, even a 2200uf, as well as 450, 330 and a few others. The little 450uf pictured runs best. I could use some advice here on what would be ideal. Most of my high voltage caps are old from TVs, est. I am very pleased with the way it turned out. Many improvements can still be made. Many here, to many to name spent a lot of time walking me thru this project and I greatly appreciate it. The "hack" provided by "poida" who I don`t think ever commented directly is exceptional and should be sticked if its not already. That alone ended my mosfet wildfires. I tried to cram it all in one pic. Hope you like it !
