Hello, In you diagrams for "12V With Solar 1200W Inverter for Van" you are using an expensive Orion-Tr Smart. I am wondering would it be safe to use the cigarette lighter and set up some diodes in the wiring? Thank you
Indeed I liked the video! I've been using a PWM controller with a small 100W PV panel in combination with a SLA 12V batterie (10Ah). It's meant to power some small garden lights. It goes on forever! Cheap and care free power.
That was a good honest explination between the the PWM and the MPPT controller they both hove there places - i might add this if your panels are at a distance from your batterys say 500 ft - in that case you would perfer to series your panels to get a higher voltage of 80 to a 100 volts - With the higher voltage there is not a notacable amout of line loss compared to 12 or 24 volts - At 100 to 110 volts DC the line loss is 10 % per mile or 5000 ft - so at 1000 ft its not a notasable amount of line loss - a MPPT will correct the voltage to a usable voltage -
Since I have three 100 watt solar panels (soon to be four), two are in a different location. I bought two 20 amp name brand PWM controllers which can do lifepo4 batteries. The two I have in operation are for lead acid batteries only. The two solar panels are already wired in parallel. The same will be done when the new panel arrives. I wish I could put all four solar panels together for a MPPT controller but I get more sun with what I did. I don't have the room for a larger system inside the house. I will be replacing the AGM batteries with two 100ah Lifepo4 batteries to run my 2,000 watt inverter. That is all the room I have.
woops your out on your calcs, when the 100w panel is delivering 5 amps the 20v drops to about 17v this is voltage under load, so 17v x 5a also the battery is being charged at 14.4v not 13v so only a loss of 2.5v. not 7v. this small loss suits as you say pmw, you can see this on your volt/amp meter
Series panels are more suseptable to cell shading problems. MPPT doesn't help when your batteries are full. I have tried 3 MPPT controllers and haven't found one yet that works right with my LFP batteries.
No matter how much I try to understand this it is trigonometry to me😂... That's why I stick with harbor freight and the thunderbolt brand. I'm also struggling with parallel. Do I parallel my panels or do I parallel my batteries ?...tv, Xbox & possibly a "dorm fridge" is what I'm trying to power (Earthship meets studio apartment)
It's easier to take it step by step. Focus on the solar panels first, then how you can wire the batteries. Checkout my video that is coming out soon about calculating your off grid solar power system.
I'm currently living off grid in Atlantic Canada and my low budget system keeps a mini fridge running, runs coffee maker, and other light electronics no problem. Total cost is under 2k Canadian
good morning thanks for this informative video can you tell me if i should use jel battery or lithum battery and also can i use lead acid battery with jel battery as a combination of battery
Hi, thank you that was a great explanation!! I have a question how do I calculate the time period it takes to charge a 12 volt battery knowing the amp hours of a battery, watt, amps, volts of solar panel with a mppt control. How is the time affected to charge 1 12 volt battery compare to charging 2 12 volt batteries in parallel?
Calculate the battery watt hours: 12V*100Ah=1200Wh. If your MPPT charges at max 10A and 12V, then you charge at 120W. If you recharge the battery from 0 to 100% you will need 1200Wh. Divide battery capacity by charging power and you get the amount of time it takes to recharge the battery. 1200Wh/120W=10hours.
What about the charging bottom voltage. Isn’t it so, that a PWM controller will start charging the battery immediately when the voltage of the PV will be higher than the voltage of the battery, whereas MPPT will start charging while the voltage difference between PV & accu will be somewhere around 5V? In other words saying, the MPPT will preform always better but in ideal conditions, but will deliver hardly anything at low PV voltage. Eg. PV V = 15,0 V Accu 12V = 12,3V Voltage difference: 2,7V At the difference of 2.7V MPPT will no deliver/charge, whereas PWM will charge de accu with 15.3V
A PWM controller is basically a buck converter so it's not true that it wastes power because it doesn't. The difference between the PWM controller and an MPPT is what controls the charging. In a PWM controller it's just the output voltage, but with an MPPT is the solar panel power. The MPPT will get slightly more efficiency (like maybe 95%), but a PWM/buck converter will be 90% efficient, and if you just use an actual buck converter (without the charge controller function) then the system will work fine without a battery. It will still charge it too if it's set to the correct voltage, i.e. 13.8vDC for a lead acid.
I don't agree. A PWM controller is not exactly a buck converter. A buck converter actively reduces voltage while increasing current. PWM controllers, on the other hand, rapidly switch the connection between the solar panel and the battery on and off to control the charging process. PWM controllers regulate the charging process from the solar panel to the battery by rapidly switching the connection on and off, which helps maintain the desired battery voltage and prevent overcharging. They generally have lower efficiency compared to MPPT controllers, typically around 70-80%, as they do not optimize the power output from the solar panel, leading to some power wastage. In terms of voltage regulation, PWM controllers match the output voltage to the battery voltage but do not convert excess voltage into additional current. This makes them less effective at utilizing the full potential of the solar panel, especially when the panel voltage is significantly higher than the battery voltage.
@@cleversolarpower So a PWM output to a battery is not a buck converter? I'm not saying a PWM charger IS a buck converter (for those who can't interpret the phrase "is basically" and later the phrase "an actual buck converter"). The point is it does not waste power as is suggested in the video. It loads the panel and reduces the panel voltage based on average load. It does not optimise the load for the panel as an MPPT does, but I did not say it did. During the mark it charges the battery at full current and reduces the panel voltage, during the space the panel voltage recovers for the next cycle. This is how both MPPT and PWM chargers work. The frequency is usually quite high (like 150kHz) so the mark and space are very short, hence it's the average power/voltage/current you see. I presume you have dismantled a PWM charger and seen the diodes, inductors and capacitors inside? Do you think they are just something to make the PCB look pretty?
So that makes pwm nice because it prevents the battery from overcharging right?coz battery wil deteriorate both when overcharge or drained right? @@cleversolarpower
looking at 2.09 minutes along there would be a voltage drop from 20v to 17v so not 20v and 14.4v going into the battery not 13v so no on 7.5 amps the increase is much smaller than shown, so 85w from the panel because volt drop - mppt effeciency loss = 82w into the battery... 82w divide 14.4v = 5.7 amps however it will be less than that because the mppt device has more loss than 3% that you and i have shown
Can I run 2 charge PWM controllers from 2 solar panels wired in parallel? Can I split the feed coming from the panels to both controllers without losing any power? If I did it that way, would one controller draw more power from the other?
@clerversolarpower, how can I use a 24v Lithium Ion battery with a 550W - Vmp=31.6v, Imp=17.4A solar panel ? should I use a PWM or a MPPT(seems Vmp is NOT sufficient to use a MPPT effectively) ? OR is it better to use a 12v Lithium battery with a MPPT with this Solar panel ?
Yes, to be sure you need a 12V battery or even better, another similar panel. Pwm and mppt need 5V+ difference. So 29.2V+5V=34.2V and your panel is only 31.6V
Nice video, bro i hav 600 wat panel and 200ahm battery, 3000wat small inverter.....pls which control is good for this MPPT or PWM and is 30ahm ok, i want it to power small hisense fridge,fan, television and lighs ?.... pls i need your help
Anything over 200W, I recommend mppt. Depends if you need to have the whole 600w available though. Check my other videos where I go in details about charge controllers, sizing and fridge power consumption.
Thank you but it does not answer 8 x 405 watts panels 20 amp per panel does not answer which to choose that would work on gris and off grid UK what size controller and inverter
hello, Can I charge 12v 7Ah 20hour battery with 18v 50w solar panel ? should this work or bad for the battery, do you have any suggest also I use pwm controller for it
Well am sorry to tell you this we us pwm controller in bms for each cell at high volt 48 to 160 volt to match the cell voltage if the mppt buck is converter 100 vdc to 52 volt a pwm volt regulator is required for each cell to switch 1 or 12 mosfets per cell or a switching halfbridge converter is use and and pnp transistor with ziner voltage sensor to switch of the pnp that’s two stage bms
If you only have a 100W solar panel , then the power to your battery doesn't justify the extra cost. You can just use a PWM. Make sure you get a 18V solar panel to get the best efficiency.
@@cleversolarpowerI have one that is 18v 210watt one that is 20v 200watt and one that is 43 volt 370watt?Yeah I know I got them separate before learning how voltages worked on charge controller!Seems I will be getting 3 different controls to get the most out of them!Should j get pwm for the 18v and mppt for the other 2?
In short, apart from all the safety features, what's the difference between an mppt controller and a buck/step down converter? If the power output isn't high(
Hi, i own 2 60v 50watt solar pannels I would like to connect those to a buck controler and than to a pwm to charge a 100 amp 12v battery do you think this could work? Is i buck the voltage to 18v? Is a 20 zmp controller enough? Or should a use a 20 amp mppt?
I was not born in missouri although I live there. But you are going to have to show me how a pwm charge controller which is controlling 20volts at 10 amps is inferior to a mppt controler which may only be regulating a 40 volt panel at 5 amps. I do not see a mppt controler providing 10 amps at 12 volts with a 40 volt 5 amp panel. I do not see how you are going to get more amps out than what is put in. If true you are still going to need heavy wire going to the battery. I have been useing a pwm controller on my 2300 watt panels wired in parrallel for 20 years and it seems to work fine. I feel mppt controlers are way over prices for what they do.
Ive got 20w 12v panel from alliexpress with cheap controller, connected to 20ah 12v battery but we have a cloudy summer this year in Poland and its not able to fully charge the battery, it hardly keeps it at the same charge level. I use it to power 16w pool filter (idea was to keep it runnig all the day ) Can switching to mttp controller help with it?
The Voc will be 13.5V, this is too low. Normally a 12V panel should have 18V Voc. So you need to upgrade your panel or place two of these in series. Better get a 100W 18Voc solar panel. 16W pool filter? WHich one do you use? Contact me on my website for further information.
I read an advantage of PWM is it can charge a lead acid battery more fully than MPPT. This prolongs the battery's life by preventing it from being constantly undercharged and getting sulfated prematurely.
That is not recommended because the PWM cuts the voltage off. A 24V panel is typically 36V you will be losing 23 volts in the process. Let's assume it a 200W panel at 5.5A and 36V, then 5.5Ax13V=71.5W (theoretically). So a loss of at least 65%. I recommend using a 12V (18V) panel or a 24V battery instead.
That is not accurate, you only described a DC to DC buck converter not mppt, the maximum power curve of a solar panel changes with heat, and the mppt controller tracks that to extract maximum power from your solar panel.
If i was talking about how an mppt solar charge controller works i would lose 99% of the people watching. If you want to know how it works, then i suggest looking up a paper about it. I explained the bare essentials here so all people can understand.
@@CroftGaming1 it is not wrong, its is simplified so everybody can understand. If you want in depth workings of an mppt, then my channel is not for you.
@@cleversolarpower i built my own mppt with arduino, i understand how it works, that's how I can say what you said it's about any DC to DC buck converter not mppt controller.
@@CroftGaming1 As I previously said, it's a simplified graphic. Can you make a video and explain how it works? Then I can send people to your video if they have questions about it.
If you care about the life of your batteries, there’s never a reason to use PWM…. Pulse width modulation does nothing to protect your batteries from over voltage…. MPPT regulates the voltage coming from the panels to match the voltage required to charge batteries without subjecting the batteries to pulses of higher voltage…. It doesn’t matter how quickly the PWM turns the power on and off it’s still pulsing the batteries with direct panel voltage…. And if it’s a cloudy day then the voltage may be too low to charge anything, whereas with MPPT the panel voltage on a cloudy day can ( and should be designed to) be significantly higher than your battery voltage and the MPPT will regulate to the required battery voltage…. I’ve had a 18V panel on PWM destroy a 12V battery but I’m currently feeding 90V into a MPPT into a 12V battery…. It starts charging early at sunrise and can continue all day regardless of cloudy weather or rainy days and will charge right up to sunset… MPPT for the win…
Indeed, thats why I recommend using a PWM only in low power applications. These usually have an AGM battery which is less sensitive to the voltage. However, the voltage depends on the temperature while the irradiance (sunshine) influences the current.
🎁Get 7 FREE diagrams to kickstart your Off-Grid journey here: cleversolarpower.com
❤❤❤
Big thnks
It was important for me
mppt雖然效率好 但像是攜帶摺疊太陽能板都18.9-22v只能用pwm,除非 pv太陽能板端有30-40v比較適合串連板子在汽車 車頂上裝
Good man , go for it. Keep it simple!!
Hello, In you diagrams for "12V With Solar 1200W Inverter for Van" you are using an expensive Orion-Tr Smart. I am wondering would it be safe to use the cigarette lighter and set up some diodes in the wiring? Thank you
All my questions regarding the PWM vs MPPT answered in less than 4 minutes ... Great video. Thank you for posting.
Indeed I liked the video! I've been using a PWM controller with a small 100W PV panel in combination with a SLA 12V batterie (10Ah). It's meant to power some small garden lights. It goes on forever! Cheap and care free power.
The solar panel could charge the battery in one hour 😄. How many watts of lights do you have?
2 hours@@cleversolarpower
I've decided!!😀... I ain't got no money... Pwm for me... 😀
On long run you loose more money As ROI for any solar investment is 5 years
I feel you bro
@@kaosickkaos5398 I just got a module that was way cheaper.. 😁
Ha HA. THANKS FOR THE HUMOR. !!
😂
That was a good honest explination between the the PWM and the MPPT controller they both hove there places - i might add this if your panels are at a distance from your batterys say 500 ft - in that case you would perfer to series your panels to get a higher voltage of 80 to a 100 volts -
With the higher voltage there is not a notacable amout of line loss compared to 12 or 24 volts -
At 100 to 110 volts DC the line loss is 10 % per mile or 5000 ft - so at 1000 ft its not a notasable amount of line loss - a MPPT will correct the voltage to a usable voltage -
That is absolutely brilliant advice & so easy to listen to. Thanks so much.
Since I have three 100 watt solar panels (soon to be four), two are in a different location. I bought two 20 amp name brand PWM controllers which can do lifepo4 batteries. The two I have in operation are for lead acid batteries only. The two solar panels are already wired in parallel. The same will be done when the new panel arrives. I wish I could put all four solar panels together for a MPPT controller but I get more sun with what I did. I don't have the room for a larger system inside the house. I will be replacing the AGM batteries with two 100ah Lifepo4 batteries to run my 2,000 watt inverter. That is all the room I have.
Instead of getting two 12V 100Ah batteries, i suggest going with 1x 12V 200Ah battery.
@@cleversolarpower I am actually looking at a 180 ah lifepo4 battery which would be more friendlier with my budget...Yes, I gave you a thumbs up.
I'd be 100% sure that controller can work with lipo, many have lipo in the menu as an option but would likely destroy a lipo in 6 months
@@adrinathegreat3095 It is a top brand PWM and I am not going to worry about it.
Oh! I do not like long videos but yours is amazing and straight to the point. Thanks a lot.
Couldn't make it any shorter 😄
Thank you very much! Easy to undestand in this way!
Ευχαριστούμε!
Thanks for the support Chris! 🙏
woops your out on your calcs, when the 100w panel is delivering 5 amps the 20v drops to about 17v this is voltage under load, so 17v x 5a also the battery is being charged at 14.4v not 13v so only a loss of 2.5v. not 7v. this small loss suits as you say pmw, you can see this on your volt/amp meter
Series panels are more suseptable to cell shading problems. MPPT doesn't help when your batteries are full. I have tried 3 MPPT controllers and haven't found one yet that works right with my LFP batteries.
No matter how much I try to understand this it is trigonometry to me😂... That's why I stick with harbor freight and the thunderbolt brand.
I'm also struggling with parallel. Do I parallel my panels or do I parallel my batteries ?...tv, Xbox & possibly a "dorm fridge" is what I'm trying to power (Earthship meets studio apartment)
It's easier to take it step by step. Focus on the solar panels first, then how you can wire the batteries. Checkout my video that is coming out soon about calculating your off grid solar power system.
I'm currently living off grid in Atlantic Canada and my low budget system keeps a mini fridge running, runs coffee maker, and other light electronics no problem. Total cost is under 2k Canadian
@@cleversolarpower
Bought the book. Very thorough
Thank you for the support! 🙏
Great video! Simple but well explained. Keep it up.
Should I choose pwm?
150*3 panels perallel with around 20 voltage
With 12v battery
good morning thanks for this informative video can you tell me if i should use jel battery or lithum battery and also can i use lead acid battery with jel battery as a combination of battery
Lithium is cheaper now. Check my video where I compare lead acid vs lithium (lifepo4)
Thanks for the information 👍
I use three 10w panels with a PWM, INTO ONE LEASURE batt, good vid, like it
Not just good but very good. God Blessings.
Hi, thank you that was a great explanation!!
I have a question how do I calculate the time period it takes to charge a 12 volt battery knowing the amp hours of a battery, watt, amps, volts of solar panel with a mppt control.
How is the time affected to charge 1 12 volt battery compare to charging 2 12 volt batteries in parallel?
Calculate the battery watt hours: 12V*100Ah=1200Wh. If your MPPT charges at max 10A and 12V, then you charge at 120W. If you recharge the battery from 0 to 100% you will need 1200Wh. Divide battery capacity by charging power and you get the amount of time it takes to recharge the battery. 1200Wh/120W=10hours.
What about the charging bottom voltage.
Isn’t it so, that a PWM controller will start charging the battery immediately when the voltage of the PV will be higher than the voltage of the battery, whereas MPPT will start charging while the voltage difference between PV & accu will be somewhere around 5V?
In other words saying, the MPPT will preform always better but in ideal conditions, but will deliver hardly anything at low PV voltage.
Eg.
PV V = 15,0 V
Accu 12V = 12,3V
Voltage difference: 2,7V
At the difference of 2.7V MPPT will no deliver/charge, whereas PWM will charge de accu with 15.3V
A PWM controller is basically a buck converter so it's not true that it wastes power because it doesn't. The difference between the PWM controller and an MPPT is what controls the charging. In a PWM controller it's just the output voltage, but with an MPPT is the solar panel power. The MPPT will get slightly more efficiency (like maybe 95%), but a PWM/buck converter will be 90% efficient, and if you just use an actual buck converter (without the charge controller function) then the system will work fine without a battery. It will still charge it too if it's set to the correct voltage, i.e. 13.8vDC for a lead acid.
I don't agree. A PWM controller is not exactly a buck converter. A buck converter actively reduces voltage while increasing current. PWM controllers, on the other hand, rapidly switch the connection between the solar panel and the battery on and off to control the charging process. PWM controllers regulate the charging process from the solar panel to the battery by rapidly switching the connection on and off, which helps maintain the desired battery voltage and prevent overcharging. They generally have lower efficiency compared to MPPT controllers, typically around 70-80%, as they do not optimize the power output from the solar panel, leading to some power wastage. In terms of voltage regulation, PWM controllers match the output voltage to the battery voltage but do not convert excess voltage into additional current. This makes them less effective at utilizing the full potential of the solar panel, especially when the panel voltage is significantly higher than the battery voltage.
@@cleversolarpower So a PWM output to a battery is not a buck converter? I'm not saying a PWM charger IS a buck converter (for those who can't interpret the phrase "is basically" and later the phrase "an actual buck converter"). The point is it does not waste power as is suggested in the video. It loads the panel and reduces the panel voltage based on average load. It does not optimise the load for the panel as an MPPT does, but I did not say it did. During the mark it charges the battery at full current and reduces the panel voltage, during the space the panel voltage recovers for the next cycle. This is how both MPPT and PWM chargers work. The frequency is usually quite high (like 150kHz) so the mark and space are very short, hence it's the average power/voltage/current you see. I presume you have dismantled a PWM charger and seen the diodes, inductors and capacitors inside? Do you think they are just something to make the PCB look pretty?
PWM is not buck converter its only regulate overcharging not increase current because it doesn't have any magnetic coil inside
So that makes pwm nice because it prevents the battery from overcharging right?coz battery wil deteriorate both when overcharge or drained right? @@cleversolarpower
This is wonderful and short thanks for the information
Thank you Boss Nick very informative
looking at 2.09 minutes along there would be a voltage drop from 20v to 17v so not 20v and 14.4v going into the battery not 13v so no on 7.5 amps the increase is much smaller than shown, so 85w from the panel because volt drop - mppt effeciency loss = 82w into the battery... 82w divide 14.4v = 5.7 amps however it will be less than that because the mppt device has more loss than 3% that you and i have shown
Can I run 2 charge PWM controllers from 2 solar panels wired in parallel? Can I split the feed coming from the panels to both controllers without losing any power? If I did it that way, would one controller draw more power from the other?
One solar panel connected to one pwm, is better in your case.
Thank you so much!
Either of the 2, can we use 18650*3 or 12v series as storage batt instead of lead acid batts?
You can use either rechargeable battery.
I have two 95 watts solar panels and 12V battery how many ah controller do I need to use
Accurate.. I got 2 100w solar panel in parallel.. Does only 136 watts
What were you using to measure the wattage?
@clerversolarpower, how can I use a 24v Lithium Ion battery with a 550W - Vmp=31.6v, Imp=17.4A solar panel ? should I use a PWM or a MPPT(seems Vmp is NOT sufficient to use a MPPT effectively) ? OR is it better to use a 12v Lithium battery with a MPPT with this Solar panel ?
Yes, to be sure you need a 12V battery or even better, another similar panel. Pwm and mppt need 5V+ difference. So 29.2V+5V=34.2V and your panel is only 31.6V
@@cleversolarpower thank you.
Great explanation. Thank you
Can't we use charge controller for charging lithium battery with car alternator?
No, the car battery voltage needs to be 5V higher than the lithium battery.
Nice video, bro i hav 600 wat panel and 200ahm battery, 3000wat small inverter.....pls which control is good for this MPPT or PWM and is 30ahm ok, i want it to power small hisense fridge,fan, television and lighs ?.... pls i need your help
Anything over 200W, I recommend mppt. Depends if you need to have the whole 600w available though. Check my other videos where I go in details about charge controllers, sizing and fridge power consumption.
Great topic, thanks
Great video, thanks for the information.
Hello I have 8 x 415 watt solar panels what do I need next what size of battery what size of controller what size of inverter ?
You are in luck! I made a video on how to size your solar system. Check it out on my channel page.
@@cleversolarpower SUBSCRIBED THANK YOU
@@cleversolarpower WHICH ONE IS IT ?
Right here: ruclips.net/video/ommuJFmaelE/видео.html
Thank you.
Good info, thanks.
I have 100w solar how many ah of controller do i need to use ?
If you have a 100W solar panel and your battery is 12V, then you need a 10A charge controller.
Hi, i have a 555watt panel and 2 12v batteries (200ah) and a 60Amp solar controller. Is this okay to set up?
555W/12V=46A
@@cleversolarpower so if I have 24V battery bank and 555watt panel that's 555/24=23, can I use a 30A solar controller?
So 58a for 12v batt is standard? Or how did you get that num
700W of solar /12V = 58A
I saw a few videos of you and i see that you have a talent to make very simple things to very complicated one.
Thank you very much!
Thank you but it does not answer 8 x 405 watts panels 20 amp per panel does not answer which to choose that would work on gris and off grid UK what size controller and inverter
Check out my video about sizing the charge controller.
How do I order your book
Through amazon or on my website.
This is not my understanding of PWM
MPPT does PWM under the hood, but the frequency is manipulated to maximize power
I love your video
hello, Can I charge 12v 7Ah 20hour battery with 18v 50w solar panel ? should this work or bad for the battery, do you have any suggest also I use pwm controller for it
use PWM regulator and is ok
@@MrVidlak okay
@@perfectcs9759 I think when sou use for 50w solat pwm and mppt all is okey to use
You sale your book on Amazon?
Yes, it's on amazon.
Well am sorry to tell you this we us pwm controller in bms for each cell at high volt 48 to 160 volt to match the cell voltage if the mppt buck is converter 100 vdc to 52 volt a pwm volt regulator is required for each cell to switch 1 or 12 mosfets per cell or a switching halfbridge converter is use and and pnp transistor with ziner voltage sensor to switch of the pnp that’s two stage bms
Even with a small set up 100 W to 12v batterys I will get more power from MPPT? 🤔
If you only have a 100W solar panel , then the power to your battery doesn't justify the extra cost. You can just use a PWM. Make sure you get a 18V solar panel to get the best efficiency.
@@cleversolarpowerI have one that is 18v 210watt one that is 20v 200watt and one that is 43 volt 370watt?Yeah I know I got them separate before learning how voltages worked on charge controller!Seems I will be getting 3 different controls to get the most out of them!Should j get pwm for the 18v and mppt for the other 2?
@@twocommastv You could series connect the first two and parallel connect with the third to an mppt. That will be the cheapest option.
In short, apart from all the safety features, what's the difference between an mppt controller and a buck/step down converter? If the power output isn't high(
If you have a 100W solar panel, then a pwm is ok. If you go over that it makes financial sense to use an mppt.
Hi, i own 2 60v 50watt solar pannels I would like to connect those to a buck controler and than to a pwm to charge a 100 amp 12v battery do you think this could work? Is i buck the voltage to 18v? Is a 20 zmp controller enough? Or should a use a 20 amp mppt?
Are you sure it's a 60V panel? That is highly unusual for a 50W panel.
@@cleversolarpower yes it is e mpv panel
I was not born in missouri although I live there. But you are going to have to show me how a pwm charge controller which is controlling 20volts at 10 amps is inferior to a mppt controler which may only be regulating a 40 volt panel at 5 amps. I do not see a mppt controler providing 10 amps at 12 volts with a 40 volt 5 amp panel. I do not see how you are going to get more amps out than what is put in. If true you are still going to need heavy wire going to the battery. I have been useing a pwm controller on my 2300 watt panels wired in parrallel for 20 years and it seems to work fine. I feel mppt controlers are way over prices for what they do.
Ive got 20w 12v panel from alliexpress with cheap controller, connected to 20ah 12v battery but we have a cloudy summer this year in Poland and its not able to fully charge the battery, it hardly keeps it at the same charge level. I use it to power 16w pool filter (idea was to keep it runnig all the day ) Can switching to mttp controller help with it?
The Voc will be 13.5V, this is too low. Normally a 12V panel should have 18V Voc. So you need to upgrade your panel or place two of these in series. Better get a 100W 18Voc solar panel. 16W pool filter? WHich one do you use? Contact me on my website for further information.
@@cleversolarpower This is stock clearflow 220v cartrige filter (swapped for filter balls). I use it with 12-220v inverter.
I read an advantage of PWM is it can charge a lead acid battery more fully than MPPT. This prolongs the battery's life by preventing it from being constantly undercharged and getting sulfated prematurely.
No, not at all. The only way this is possible is that the PWM has a higher charging voltage than the MPPT.
How does MPPT converts the remaining voltage into Amps?
@@cleversolarpowerbut lead acid batteries respond well to a slow trickle charge, so wouldn't it be down to the slower charging?
@@rathnamalasp1097 By converting the voltage into current. A PWM cuts it off which is lost.
@@stupidscruff Charging at the recommended C-rate is always better than charging at a higher current than the C-rate. Check out my video about C-rate.
can i use a 24 volt pannel to charge a 12 volt on pwm
That is not recommended because the PWM cuts the voltage off. A 24V panel is typically 36V you will be losing 23 volts in the process. Let's assume it a 200W panel at 5.5A and 36V, then 5.5Ax13V=71.5W (theoretically). So a loss of at least 65%. I recommend using a 12V (18V) panel or a 24V battery instead.
Thanks boss
Thanks
Don't the PWM is more likely to overcharge and damage the battery?
Not if you program it for the right chemistry
Read the definition of mppt (wiki). This explanation and the conclusion is not correct!
Please explain to us what is not correct so we can all learn from your valuable input.
Waarom, zijn die controllers niet voor 24 volt ?
PWM is for 12 and 24V. MPPT can be used in 12,24, and 48V.
I've decided 😂
That is not accurate, you only described a DC to DC buck converter not mppt, the maximum power curve of a solar panel changes with heat, and the mppt controller tracks that to extract maximum power from your solar panel.
If i was talking about how an mppt solar charge controller works i would lose 99% of the people watching. If you want to know how it works, then i suggest looking up a paper about it. I explained the bare essentials here so all people can understand.
@@cleversolarpower you don't need to explain it in details, but you should not give wrong information.
@@CroftGaming1 it is not wrong, its is simplified so everybody can understand. If you want in depth workings of an mppt, then my channel is not for you.
@@cleversolarpower i built my own mppt with arduino, i understand how it works, that's how I can say what you said it's about any DC to DC buck converter not mppt controller.
@@CroftGaming1 As I previously said, it's a simplified graphic. Can you make a video and explain how it works? Then I can send people to your video if they have questions about it.
Good
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Life-saving video. Wish I could have a direct contact with you. It could mean a lot to me.
You can contact me on my website through email if you have questions.
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If you care about the life of your batteries, there’s never a reason to use PWM…. Pulse width modulation does nothing to protect your batteries from over voltage…. MPPT regulates the voltage coming from the panels to match the voltage required to charge batteries without subjecting the batteries to pulses of higher voltage…. It doesn’t matter how quickly the PWM turns the power on and off it’s still pulsing the batteries with direct panel voltage…. And if it’s a cloudy day then the voltage may be too low to charge anything, whereas with MPPT the panel voltage on a cloudy day can ( and should be designed to) be significantly higher than your battery voltage and the MPPT will regulate to the required battery voltage…. I’ve had a 18V panel on PWM destroy a 12V battery but I’m currently feeding 90V into a MPPT into a 12V battery…. It starts charging early at sunrise and can continue all day regardless of cloudy weather or rainy days and will charge right up to sunset… MPPT for the win…
Indeed, thats why I recommend using a PWM only in low power applications. These usually have an AGM battery which is less sensitive to the voltage. However, the voltage depends on the temperature while the irradiance (sunshine) influences the current.
i have personally tested this and it is false.
Please share your findings with us.
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To start with...what the hell is PWM and MPPT?
Check my article on my website about it 😉
Pulse width modulation
???
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