How To Test DC to AC Power Inverter Efficiency - Basic Voltage Drop Results
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- Опубликовано: 12 ноя 2021
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You are on the right track bud, but one big mistake. You cant apply AC watts in your DC math. Also, the kill-a-watt device is redundant here and provides a slightly less accurate reading than doing the math with the voltage and current readings. DC side 12.1 x 8.4 = 101.64. AC side 115.45 x .82 = 94.669. Therefore 94.669/101.64 = 93% efficient. And that's at less than 1/3 of rated capacity!
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According to AIMS Corporation, their inverters peak efficiency is at about 40% of their rated maximum load. We know what they do when you get close to 100% of maximum rated load: they get hot and their efficiency drops.
question, so on the dc side wouldnt you take the volts of the battery x the amps drawn =101.64 watts then minus thst from the watts at the bulb 94 watts= a difference of 7.6 watts. With that considered would the efficeny still be at 90% since you ssid there was a 10% differential?
I've only got one volt meter here. I guess anyone can do electric testing with all those specific tools.
nice job man! good explanation! very good this experiment!
Superb entry waooo amazing
I had a AC DC fridg with frezzer in our boat, it was a full size apartment size It wasan AC with a built in invert. When on shore power it ran on AC, when under way it was on DC, unless I had the on board 10.000 watt generater running.
You did the demonstration just like an electrical professor would have..... I could not have done any better myself.....you got all the loses to take into the calculation.....developing heat is your biggest enemy to contend with and you know this......well done Steve.....CHEERS
That was a pretty hefty loss when you loaded it up! 😮 Glad I didn’t have to do the math 😁👍
Great info as always. 👍
Good info here Steve. Nice job breaking down the numbers! 10% is significant!
Great info. I have a small one years ago for camping, for blowing up mattress etc power laptop. 10 percent drop , i wasnt expecting that. Proper cables etc thats a great help bud.
Great info there Steve, you take all the guesswork out of it for folks. Cheers
I’ll take your word for it Steve cause you are the smartest friend I have 😂. Thanks Buddy!
Wow Steve, this was one POWERful video and quite enLIGHTening!! Be safe my YT friend. Cheers.
Good video Steve
How's she goin'? Good demonstration of voltage and current losses. To me the key to this comparison is the current draws. Like you mention, if the load stays the same, as the voltage goes down the current goes up. This is a very important point. You need to know what this current will go to so that you can size your wiring correctly. And the longer the distance the more line loss you will encounter in these wires and that means a bigger size cable will be needed. Very interesting these experiments and practical set ups you do Steve. Thanks and take care!!
I have one of those expensive DC fridges. For me it was worth the extra money because I don't need as much solar power to run it. Not only do you eliminate loss at the inverter, it is also a much more efficient compressor (at least the one I purchased does). It is tough to plunk down that kind of cash, but after five years I don't even notice it, lol.
I dunno, I kinda feel like I was tricked into doing math. Very informative video though. I'm seriously thinking of buying a bit of land and building a small off grid place. Use it as a vacation home. If I ever end up doing it, I'll have a bazzillion questions for you! lol