MPPT VS PWM || Solar Charge Controller
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- เผยแพร่เมื่อ 7 มิ.ย. 2024
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You can get the controllers shown in the video here (affiliate links):
MPPT:
Ebay: rover.ebay.com/rover/1/711-532...
Amazon.de: amzn.to/2sYscJS
PWM:
Ebay: rover.ebay.com/rover/1/711-532...
Aliexpress: s.click.aliexpress.com/e/_dSj...
Amazon.de: amzn.to/2s331Sj
amzn.to/2sYIqCw
In this VS episode I will compare an expensive MPPT solar charge controller with two cheap PWM solar charge controller from China. I will mostly talk about how much power they can draw from the solar panel and when it makes sense to use a cheap PWM controller and when an expensive MPPT controller.
Music:
2011 Lookalike by Bartlebeats
Killing Time, Kevin MacLeod (incompetech.com) - วิทยาศาสตร์และเทคโนโลยี
![[TH] VCT Masters Shanghai Playoffs DAY 6 // G2 vs GEN | 100T vs TH](http://i.ytimg.com/vi/M6jxF80AajI/mqdefault.jpg)
What? A video on friday? Long story short, I will be going on vacation tomorrow and take a small break from producing videos. So this is basically the video for sunday. But don't be scared, there will probably be another video ready for the next sunday.
Enjoy your holidays Scott!
GreatScott! where are you gonna go.
sir you are making a ordinary person a engineer
Enjoy your vacation !!! Thanks for video, and i will see you next time !!!!
GreatScott! Man your videos are awesome!!!!
for some reason I find this really satisfying seeing your face saying "Stay creative and I will see you next time"
Sapher me too, it's so weird
Sapher oh, me too
Agreed, it's great to see his face. More (for lack of a better word) "Personable" that way
Finally, a face to the voice - love your videos :)
factory whatsapp+8613798209142
4 years later this information is still gold... Anyone else admiring the neatness of his handwriting? That alone makes the video more plausible and the results from the calculations, as well as his conclusions more believable. 😃
I couldn't agree more.
Nice to see you on friday!!!!
can you use grid tie inverter?
Te le adelantaste a Scott con la energía solar eh! jaja, abrazo!
www.amazon.com/dp/B0778D7SP9
The final calculations were shocking to me, but they confirmed how AWESOME you are to not hesitate to show real numbers even if you don't like the outcome. Keeping it real! I like that!
Video quality just got better, keep it up scott
GREAT VIDEO!!!
And I agree with everyone else. SO GLAD you finally came in front of the camera!!! :-D
Great video to watch on a Friday, regards Scott!
This is a really good video, keep them up like this man. It's good to see your channel evolve
This is a really good presentation. You have included considerations that nobody else has thought of. Good work.
finally got to see man behind such a great show, thanks for being inspiration for plenty of my diy projects.
+Navin Choubey No problem :-)
I saw you face GreatScott at first time. Thank you very much great video every times. Especially I love your schematics drawing beauty. Thank a lot.
I like this format with the intro and outros, nice touch!
Thank you for showcasing and explaining the different concepts so easily in this video.
I've watched many (but not all) of your videos, and this is the first time I've actually seen your face!! But Thank you.. You confirmed with what I thought on my small project and I appreciate it.
Good to see you after a long time.
first time to see great Scott face not disappointed at all.
looks awesome dude 😉
Thank you for making these kinds of videos! I really get a lot of information from them. They add much value day.
Crazy! Never thought you looked like that. It's great to see the face behind the videos 👍
Very interesting video. Everytime you upload something, I feel more motivated about doing a electronics project myself. Keep doing such great work!
Great video...thanks. Im a EE and q General class radio operator. I built a 125aH portable battery power box, for my power needs outdoors for long weekends operating radios and everything else I needed for my comfort...fan, lamps ect ect. I use a $15 no name charge controller now for about 6 years of regular use. It performs very well.
Mppt really comes into its own with larger systems where the PV voltage is configured to be much higher than the battery through series connection of panels. In either case though, the energy harvested over the whole day will be significantly greater with a good mppt controller. Really enjoyed the video mate, cheers!
This is my first time to watch your video with you in the front explaining anything.
although I've only subbed recently.... now i finally find the video that reveals the face behind the voice... so clear yet concise... overall I gotta admit I am learning from your content as time goes on.
I watch your videos all the time and that is really great.!!! Please continue.
I always appreciate the formulas and detail! excellent work as always. that guy about the Stirling engine has an interesting point to followup on.
Excellent both in writing and in verbalizing clear into the point
Thank you so much for making a video about this! I've been scavenging parts to build a portable solar generator for a while now. This video was VERY helpful! P.S. It depends how damp your garage is and how cold that block wall gets in the winter but keep an eye on those exposed terminals they can corrode quite quickly if condensation is present. If that happens adding a plywood backboard and/or some dielectric grease should remedy the problem. I see it alot in mains electrical panels.
good call @Samara Saunders - Installation is as important as compatibility and other tech stuff. I have seen expensive equipment (not speaking of solar specifically) fail due to corrosion, within a year, through damp getting into low power circuitry. Things start getting weird (unreliable) first then failing completely.
Thank you so much for this. I know product reviews are not really your thing, but this was totally relevant. I hope to see additional videos like this in the future.
Hi @GreatScott!
Great video, thank you.
Really enjoyed this different style of video, keep it up!
Love your videos, thanks so much! Have a great vacation!
Enjoy your vacation, you deserve it for all your efforts !!
Thank you GreatScott, good and useful video. Have a nice vacation somewhere warm and sunny.
Man you are making great videos, just keep up with good work. Greatings from Serbia :D
Nice surprise to see you, awesome work you are doing mate... Helps a lot to nerds like me
what an absolute hunk! great vid
Can't wait for a diy mppt charge controller...
It will happen....but not soon.
GreatScott! awww
It's not a complex idea. Construct a graph of your panels' voltage vs. current. You want to have the line from the origin to your panels position on the Current/Voltage diagram have its maximum length. Equivalently, find the point on the curve where the tangent's normal passes through the origin.
The issue is that the curve changes shape as illumination changes (you really need a 3-D map if you wanted to do it like your car's ECU) and an iterative approach is needed. The simplest is this: change the voltage on the input by varying the duty cycle on the controller. If this increases the power, do it again and again until it doesn't. Repeat every few intervals or when a large excursion happens on the input power.
There is even a chip that he could base a circuit off of.
GreatScott! i made one. not effective but working.
My sincere respects for this guy who take seriously efficiency analitical energy costs. You are a true hero. Cheers from Argentina!!
nice to see you scott.
Yep he is human after all. Just like everyone else. Do not panic people.
Thank you really much for the comparison! This helped me a lot.
I think I will firstly get a PWM-Controller, since they are not that expensive and I can always upgrade to an MPPT-Controller later down the road.
Enjoy your vacation!
Something that you didn't mention is the main function of the MPPT is to vary the voltage or current in order to maximize the power generated depending on the temperature and irradiance of the PV panels. This is specially important during days with lots of clouds in the sky since partial shading of panels can really decrease the power generation if this is not compensated by an MPPT module.
Very thoughtful comparison. On with my learning!
Excellent explanation and comparison! I don’t feel so bad about my cheap PWM controller for now but may upgrade to a better quality unit later.
You forgot one of the most important points about MPPT vs PWM! Most PWM controllers will not work until the output voltage of the panel reaches a certain voltage, but a MPPT panel can boost low panel output during early morning and evening sunlight. This means that you get more hours of battery charging during the day from MPPT instead of PWM.
That might be important for grid-tied systems or any system that needs to maximize watts all day long, but for many people who are using solar on RVs or off-grid if they're still desperate for watts at the end of the day they've got their system sized way too small. The PWM system on my camper starts charging the moment the sun is on the horizon and my batteries are fully charged by 10 am to noon on sunny days. By the end of the day I don't care if it's getting any watts at all since it's just been throwing them away all afternoon anyway. On cloudy days when charging is minimal, yeah, maybe that would make a bit of a difference. But I prefer to have enough amp hours in the battery bank to last at least 5 days without any charging at all, to guard against running out of power in case of multiple cloudy days, etc. PWM has worked fine for me for ten years now and it saved money over going with MPPT. Everyone should do the math for their particular system. Sometimes MPPT is the only way to go, but sometimes not.
@@MTMiser do u know how i can use a system without batteries ? iwanna just work for my fridge in the ligthday
@@stopPlannedObsolescence You would need to know how much power your fridge pulls, especially on startup. I'm assuming it's a residential fridge? Those pull a lot of amps on startup. Then you need enough solar panel wattage to handle that and an inverter to convert the solar array's voltage to whatever voltage the fridge runs on (120, 240?). But I think you'd be better off with a battery bank. Otherwise the power would fluctuate every time a cloud passes over. I would think that could damage the fridge's motor over time.
@@MTMiser thank so much mate,yeah so with this point of view, i think is better a bank batteries that support the peak and the consume required for 1 hour like minimum ,or another idea is a onGrid system for reducing my kw/h just for startting in this world.ty and escuse me for my bad english heheh
@@stopPlannedObsolescence If you would not want to use a battery (can't recommend) you better use a peltier fridge. It does run on 12V and it will not stop running if too less power (like a 12v compressor fridge)
GreatScott that was an excellent review.... at the end of the day I will stay with my BlueSolar controller. Thanks mate.
Love your handwriting - so neat😃
For many people the solar efficiency is not a monetary matter. Instead...it is their only way to obtain any energy so the extra power you can capture on any given day is priceless. Nice video!
Excellent video as always.
first time greatscott! notification scares me,,, but later only I realized this is not Sunday
ENJOY YOUR VACATION Scott!
Great to meet you in "person"!
I don't know if you have appeared on your channel before I subscribed to it.
but It is great to see you, generally I think great scott with flashing LEDs only.
I always thought of you a mentor, and your projects inspired me.
I appreciate your practical view of the two type of charger
Was just browsing for controllers on eBay and wondering about the price differences. Great video - thanks!
Thought great scott was around 40. Not disappointed
Finally I see a video that starts with our hero GreatSCott himself!
nice to see you on camera. great job..
Feel good to hear you, also to see you
Always like your videos, keep up the good work.
I really wish my hand writing was as nice as yours.
Very innovative videos you are making, and specially your handwriting is great
awesome mate. keep up the good work
THANK YOU for doing this topic!!
Great Video! THANKS SCOTT!!
I purchased some MPT7210a controllers, mostly because I use a mix of 230w, 285w, 300w panels charging a 60v LiFePO4 stack.
It's fun to watch them compete with one another to push current into the batteries when the system is under load
Your vids have become much better.keep up bro 👍🏻👍🏻👍🏻👍🏻👍🏻👍🏻👍🏻
OMG I thought you are middle aged guy with this knowledge :o You really have done your lessons and research well!
good production, camera work.
Thank you again for another creative and informative video.
Great information. Thanks for the upload 👍
I think the true value of the MPPT will become apparent when there is partial shading on the solar panel or when it is cloudy.
Great video mate cheers!!
Great video great format
Great video, GreatScott! It's great to see somebody saying to do the math before choosing between MPPT and PWM. It seems a lot of people think MPPT is more efficient than PWM so that's all you need to know - go with MPPT! But PWM makes sense for many people. You really have to do the math for your particular system in addition to taking other factors into consideration (like build quality, etc.). I built a solar system for my truck camper back in 2009. I wanted to go with a high quality charge controller so I bought a Morningstar PWM. It cost me $155 US but it is a solid, excellent quality controller that is still working flawlessly today. The MPPT version of the same controller was almost $380, $225 more than the PWM version. I added an extra solar panel to my array to make up for the difference between PWM and MPPT. The MPPT controller would have given me 39% more watts to my batteries (at the most, not all the time). The extra panel gave me 36% more wattage, so nearly the same advantage. And the extra panel was $100 instead of the extra $225 for the MPPT controller. So it saved me $125 over going with MPPT. And for 9 years now the system has been working great.
Thank you. You are a great person and we hope for more
That intro was amazing cause you came in front of the camera. :)
I like the new Style of this Video. You make you more present in the Video and i like it. More of this would be awesome
love the new intro and outro :)
Planning to install solar panel, this helps a lot. thanks
Thanks to review Scott
Ahahahaha OMG! been watching you for a couple of months now always thought you are like 45+ :D This is Great! love your vids keep up.
Hi your systems is very good, Congratulations from Brazil
Uei! Finally I see the man behind the voice. Thank you for the video. All together, what I think in the end is that it does not mater if a solar panel can produce energy for 25 years if a solar charge controller need to be replaced after some years (meaning more money) and if you consider the price of energy you will get in the same price as if you paid the monthly bill. I like solar but I have doubts about the final cost.
I also like the talking to the camera video format.
Great! good to see you.😃
Have a nice holiday, and come back with some more great ideas...
Thanks for the testing
victron has the best stuff, 5 year warranty solid desighn and regular updates cover the higher price for me. I love thear concept and also bought a multi compact and a BMV700.
Happy to see your face again
Dude... you look much younger than I imagined. So wise for your years!
Also your handwriting is soo Good like computer Font
i was always worried to see your face on camera lol, i like your videos thanks
great (scott) video.
Interesting results you got there. Nice Video, i will soon build a Solar System in my garden, which isn't connected to the grid either. Btw i saw in a video that you drive a simson too :) I am currently doing some cool electronic modifcations to mine. I have build a quickshifter, which cuts the ignition for 80ms while shifting, thus resulting in smooth clutchless shifting without getting of the gas either.
Nice to see your face Scott :)
I already by an anself for my solo solar panel in my greenhouse !
If i had to buy home for home i agree i'll buy the mppt one.
Thanks man! Finally i saw someone talks about solar . Thank you and by the way you are so handsome!
Thanks. It would be nice to get a little theory of operation between the MPPT and PWM chargers. Good work on the vid as it's good to see real numbers. Learned about you from your interview on the Amphour!
felt good to see my guide's face!
Hello German Engineer, nice to see you.
finally you put your face on cam. It's good to know who is creating all those great vids. "Stay creative and I will see you next time"
Good.Thanks Scott.