Quote:
Originally Posted by skellyo
We've got a couple of these here at work:
http://www.nhresearch.com/Products/4...onic-load.html
I've run tests on some of our power systems to 10kW peaks with 2 of these paralleled (up to 36kW capable with 6 in parallel). For any real high power testing, a consumer oriented load just isn't going to get you there IMO. For instance, if you want to run a steady state load of 30A and then peak it to 150A for 10mS, this will do it with ease. |
That looks like a great piece of equipment. I wonder how much they are?
I'm trying to keep costs to a minimum on this project. If only I had sponsership. LOL
As for a "consumer oriented" load, I've been thinking about using the coils of a space heater. Possibly even 2 or 3 of them in parallel. Rewire the heater(s) to run their fans normally with house current. Then send the coil power leads out to be powered by DC.
As long as the setup can handle it, all that has to be done is measure the amperage level at the battery leads.
It is true that the watts of discharge is what has to be considered when sizing something like this. A space heater can go up to 1500 watts under regular household use. This would be comparable to 4S under a 100 amp load. If a 200 amp load was desired, then a 2 parallel setup would be required.
For 6S testing, a 2 parallel setup would be required for testing with 100 amp load. 25.2 volts x 100 amps = 2520 watts of power.
I haven't checked the resistence values or anything yet, but I'm hoping this will work.