ฝัง
- เผยแพร่เมื่อ 26 ส.ค. 2024
- Garret walks us through solar panel specs, MPPTs, PWMs, Ohm's Law, and the IV Curve. If you're a fan of learning, this video is for you. Ready for a panel kit or some other custom quote for your rig? All of our kits can be customized to your needs. We provide technical support for any DIYer who buys from us.
0:26 Solar Panel Specs
1:40 Ohm's Law
2:11 IV Curve
3:50 Standard Test Conditions for Solar Panels
5:27 Charge Controllers - MPPTs and PWM
Let us know what your thoughts and questions are and we'll do our best to answer them in the comments.
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AM Solar provides energy management and independent power solutions for RVs and other off-grid applications like boats and tiny homes. We offer RV solar panels and other equipment, including lithium batteries, inverter/chargers, and battery monitoring in complete do-it-yourself solar kits. Since our inception over twenty years ago, we have led the way in camping and RV solar panel systems implementation, products, and customer service.
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Wow thank you for explaining it in layman's terms, I actually learned a lot!
that made alot of sence on a few things i didnt know .. thank you..
Thank you.
2:27 mark: "...more current you'll have less voltage...". ??? I think you meant to say that to get more current either voltage needs to increase or resistance needs to decrease (given the other value stays the same). Also, it was intéressant to learn about the use of "I" in the current specs. :) One small suggestion is you could show how cool the Victron charge controllers are (in conjunction with a VRM Portal account) by showing real graphs of active systems. The Victron Solar Charger PV Voltage and Current graph is very revealing.
Specific to the IV curve, as current increases, voltage does decrease, but I could have explained that better.
@@GarretTowneAMS given that the wattage stayed the same I would think the amperage would go down as the voltage increased … that has been my experience... . But on a clear and very cold , snow on the ground day ,in the high mountains if the wattage and the voltage both went up , then I think you would see a relatively higher amperage ( but still falling but a lessor amount) than when operating at the same 100 watts as usual …Am I wrong on that… (I didn’t state that as well as I’m thinking it.)
(To add on ) , the power of the reduced amperage is actually more , as it is achieved at a higher voltage …
Garret, Thank you for this video---look forward to more. As you point out, the MPPT controllers have significant advantages over PWM controllers. Yet, Zamp only sells PWM controllers. Any insights on why that is? Cheers
I’m not a Zamp representative, but I have been working closely with them and selling their panels for several years. My understanding is that they are developing an MPPT controller. I don’t know when it will be ready.
@@GarretTowneAMS ok, thanks. be interested to see what they develop. tough competition with the Victron controllers Cheers
Help! I have a trailer with a factory solar panel. I had a jack installed on the tub where the battery so I could also use a suitcase panel. Told that I would still need a controller for it. Is this true? The controller inside the trailer not able to recognize it? My plan is if I have to park under trees where the solar on the trailer would not get sun. I would like to put a panel out in a sunny area. Plus.. maybe double the panels even when parked in the sun to charge battery faster.
Usually folding panels or suitcase panels have a charge controller built-in, so if your jack goes directly to the battery, and your suitcase setup has a charge controller, you'll be in business. If it does not, have one installed between the jack and the battery. Get one big enough to support all the folding panels you plan to use.