We went with the Omega SSR I detailed in the original post. I also suggested they use a K-Tec 480V ground fault circuit with insulation resistance tester.
I have handed off the concept to one of their employees to finish the implememnation.
Dave at USI
A water cooled aftercooler is available for the Eaton SC 3.8L GM engines. If I can locate the URL, I'll post back. Grand Prix GT array of hop up parts. The specs on that unit might shed light on your design.
Dave at USI
IRstuff: I now see what you meant about boosting from the low cap Voltage. That would be a cost/complexity trade off but an option that may solve the size issue.
Will look at some discharge curves and try to firm up ideas by next week. Enjoy the weekend!
Dave at USI
Here is what we need to supply:
24 VDC 14A continuous 25A Peak 350 W
12VDC 6.5A continuous 70W
5VDC 5.0A continuous 25W
If the 12 and 5 are derived from DC_DC modules off the 24V, then there is the module efficiency to consider so the value to be supported 2.5 sec will be roughly 500...
Thanks for the responses. We have a size limitation that will preclude using a lot of 60mm dia caps. The size limit is still being determined.
We also do not plan on using any boost at this time on the 24V, but rather just diode switchic to bring the cap on-line. We can allow some droop...
I'm working on a circuit that has the requirement of continuing DC power output after failure of 120VAC input for 2.5 seconds.
The circuit contains a supply that accepts 120VAC and outputs 48 and 24 VDC. The 24V is what needs backup, as it feeds its own loads and supplies the input power to 2...
Another of my 2 cents. Have owned a '87 Buick Turbo that I modified for drags and a '92 SSEi with SC that was street only (3.8L). The Tu had annoying lag but about twice the power of the SC. With intercooler I was able to run 21 PSI first gear then fold back to 18 PSI. ATR mod kit brought...
Thanks jbartos!! Help me understand the current. If I pull from only one phase, and I have a 480V Wye, then it's going to be (480/1.73)* 54A = 15 kW if I use one leg and the neutral. If I connect across one phase, then wouldn't it be 480 * 31.25A = 15 kW. And if I used all 3 phases, then...
I use about 1 gallon of water/isopropyl mix per 1000 miles.
Assume "x" miles under boost with injection. For x = 1 or 2, if you calculate the heat of vaporization versus air intake mass, this has virtually no effect. A better cold air intake system would do more IMHO.
overrev
Dave...
I've just begun the search for a SSR or similar power device to drive a new product. The product will appear as a mostly resistive load (don't know angle yet) that requires a huge slug of heat up front, then a reduced level of heat to do fine control.
We will need about 15kW for about 0.5 sec...
This is my first post on this forum.
I'm a consultant working on a driver circuit for a new kind of actuator. We need to supply the load with a large slug of power initially, then taper off to a much lower value. Roughly 15KW for 0.5 sec, then back off to an average power of 80 - 200 W for...
