diy solar

diy solar

Recent content by bwinzey

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    99.5% Efficient Inverter Design

    A little late but the most straightforward way would be to go for a UPS that can take that battery voltage. Generally they are already isolated and of course are way over engineered with every protection and filtering imaginable. Depending on the wattage you need and if you get lucky you can...
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    Feeling cute today, may build a 480V battery later. .

    If it were me I would definitely do what you're talking about here, especially considering that two of those modules in series are pretty much the perfect voltage, but of course there's plenty of precautions one would have to take. Primarily I would start by removing all the bridges on the pack...
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    Lorentz solar 3 phase pool pump

    As long as you stay within the input parameters you should be fine. Says PV max open circuit is 150vdc so that's what I would try to go for. VOC of those panels is 37v each, You should be able to put 4 in series. Now, it says 36-72vdc nominal, that's generally because the buck converter inside...
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    Elcheapo Hydraulic Hex crimper results, as expected...stick to Burndy mechanical indent crimps eh! Giggles

    Think of it this way, you could use the cable to jump start cars AND tow them... At the same time! Talk about transfer of energy
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    Elcheapo Hydraulic Hex crimper results, as expected...stick to Burndy mechanical indent crimps eh! Giggles

    Not sure how you got to the conclusion of 20% less conduction. That crimp looks perfectly fine. I've been using one of those cheap hydraulic crimpers for a few years, built my 48v golf cart with 400a controller using it. Terminals have seen all sorts of water humidity and dirt for around 4...
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    Need for easily and cheaply repairable inverter

    There's a forum called "thebackshed" which has a big community of people who do just that. People that make 1-5kw inverters using the egs002 and they are relatively simple to build, and since you have all the schematics and parts lists you know where everything is and what everything does. Makes...
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    EBay Solar charge controllers?

    Those do work fine, I've had one charging my 12v SUV's battery with a 110w flexible panel on top for 2 years now, works great. But I wouldn't trust them over like 25A. Took mine apart to check it out and the MOSFETs inside were rated to like 100A if I remember correctly but the only cooling they...
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    Hello there, from Denmark, firsttimer, with lots of questions regarding my setup plan :-)

    Not sure about those 5.5KW ones as they do say grid tied. Surely there is a setting to turn it off but you'd probably have to find the manual and look through it to see I know they have a 5kva model that doesn't feed the grid because I had one, never actually used it but just looked at the...
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    any way to use an older, no-name, crappy 48v charge controller/inverter/mppt unit that cannot charge above 55.5v?

    Your idea will work fine the only thing would be that once the bad charger stops charging, all the power from the solar panels connected to it will just be wasted, meanwhile even if the batteries are only 80% the other solar panels with the other charger will have to supply the rest of the...
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    208v 60hz 3p inverter

    US $98.90 14%OFF | Solar water pump inverter DC to AC 0.75kw-11kw 220V or 380V Output Variable frequency speed controller for water pump https://a.aliexpress.com/_mPBjthk Found these on AliExpress. Looks like they fit the bill and are actually quite cheap. Literally like I mentioned earlier just...
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    208v 60hz 3p inverter

    I know there's some solar "pump controllers" which are literally reprogrammed VFD's that just take the 300-400vdc directly from panels coded with an MPPT algorithm. Now if you need to run it without sun then yes, you will need a way to store the energy therefore a battery, but I PRESUME those...
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    Arduino-Based IGBT PWM Charge Controller

    Don't think so. Looked him up in the registry and there's no Klontz. What I did find on LinkedIn is a Keith Klontz that was a professor in USF from 1995-1998. Looks like he left and started a company that deals with designing and manufacturing industrial motors/generators.
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    Arduino-Based IGBT PWM Charge Controller

    Ucf, but I'm studying Aerospace, nothing to do with electronics, and it shows... The setup in the first video was completely wrong, and while testing a bit I realized that in trying to filter the output using only caps, I was turning it into a very bad buck converter. Bad as in, since I had no...
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    Connecting 20 wind turbines in series ?!

    You could also use grid tied inverters and tie them to your grid. But obviously won't be able to charge batteries with the power. Something like US $46.77 21%OFF | 300W 350W 500W 600W 700W Solar PV Grid Tie Micro Inverter MPPT DC26V-46V Solar Input AC110V-240V Output Home Solar On Grid...
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    Connecting 20 wind turbines in series ?!

    You can't put boost converters in series, they're not isolated. You'll just short them out. Really the only way I see it working properly is if you just use the correct cables. 200A is way too much current to be carrying for 100 meters. Personally it were me I would cut my losses and try to...
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