Waooh!!! , This is very interesting, You have really convienced me to go for an Mppt charge controller no matter how the cost is, its value have practically been seen. Thank you.
The flexibility of an MPPT controller is what i love the most, regardless of your panel configuration, an MPPT will always track and deliver maximum power, using either voltage or current depending on what it sees in excess, PWM will constrain you to a particular setup, which when analyzed carefully, costs more than the initial cost of an MPPT. MPPT - pros; more power extraction, flexibility, less heat at higher power. cons; high initial cost. PWM - pros; low initial cost cons; less power extraction, non flexible, more heat at higher power, requires upgrade to MPPT after some time🤣
I wish that over sabi that called him Self Solar God can watch this video, He feels He understands solar more than everyone. Thank u for this analysis . Smiling solar u made me smile
Nice experiment video. But I don't totally agreed bcoz the configuration is not in favour with the PWM due to the high voltage half cut cell panel of around 43volts at 10.7amps VOC. You should have use 12volt panel since you are dealing with 12volts system. Infact the PWM is performing almost the same as the MPPT, and understand that the PWM is just an off-on switch which can only reduce the panel voltage to the battery voltage. Here as we see the panel is 48volts while the battery is 12volts and using PWM you won't get half of the panel harvest bcoz all the remaining voltage will be given as heat (loss).Repeat the test using 12volts sytem with a 12volts solar panel and prove me wrong, and the difference will not be above 15-30% comparing it with even victron MPPT charge controller.
Whatever Solar panel you choose to use the MPPT will always do better So let's assume we used 100 Watts Solar panel as suggested by you. The VOC for a 100 watt is 19.4 Volts, there will be a wasted exces voltage of 4 volts cut across the panels used because the PMM lacks the ability to convert it to current.
@@bamimichael2853 Lest assume we use 20 100 watts Solar panel for this output test. 4 x20 is 80 volts lost. The emphasis here is not margin lead but a demonstration of how much more energy you can harvest using MPPT.
@@smilinsunsmilinsun8056 Thanks for clarification bro. My point was mainly on the high voltaic pv on 12volts system using PWM bcoz it's at it disadvantages. MPPT remains the best choice that's for sure especially in large setup above 200watts system. So using 2000watts (20panel of 100watts) is not recommend on pwm, bcoz that will be around 100amps if connected in parallel, and it's much coastly with large wire sizes/guaze and generally risky with 12volts despite the necessary precautions. I don't know much about solar Tec bcoz am into medical science but even at 20 solar panel connected in parallel with 100watts the 80volts losses will still not exceed 30% using MPPT. Thanks for the educative video and we really appreciate your time & reply to help us understand about solar Technology.
I agree with the first comment. The pwm only had to cut down all the voltage of the panel to suit its load while deccipating the rest as heat. The experiment may have been flawed in favour of the mppt controller which traditionally converts excess voltage to current. smaller size panels of about 15 - 20v max should be used for this experiment let's see if the mppt will really give the pwm a wide-margin "black eye"
I have said it before the lowest Solar panel you are going to use will always be a 100 watt Solar panel. What is the VOC and VMP of the PV . VOC is 19.2 V ,VMP is 22 volts. What does this tell you ? Excess voltage taken out after reaching a sufficient voltage to charge the nominal voltage. is a complete waste on PWM.
The MPPT will still dust the PWM as long as one is using same types of panels, same ratings, same positions, same connections, same amperage, and wirings. I'll do you one better: Basically, pick out a 50W panel (like that of the MTN Lumos) and a 12V 10Ah lithium battery or even a car battery (12V 70Ah). Use a 10A PWM charge controller vs a 10A basic, skeletal looking mppt charge controller (not any of these modern looking and branded types). Position their respective panels in such a way that they are not side by side but top and bottom facing southward (you can use a solar compass for this). Run the test and see. If you were to open up both controllers and see their components, and you know how components connected in that way should work, you will not be in doubt as to the superiority of the MPPT technology to the PWM. In the very simplest form, the PWM is a DC-DC converter while the MPPT is a DC-DC converter and booster.
In situations where the photovoltaic (PV) output voltage is only marginally higher than the system voltage, such as a 24V system with a PV outputting 30V, the advantage of using an MPPT (Maximum Power Point Tracking) controller over a PWM (Pulse Width Modulation) controller may be minimal. This is because the primary function of an MPPT controller is to track and optimize the maximum power point of the PV array, which becomes particularly beneficial when there is a significant difference between the PV array voltage and the system voltage.
You may have a point but you still miss a very significant point about the mppt controller which ALWAYS tracks the maximum power point, and not just delivering the voltage converted by the cells. By doing just that, it delivers at least 25% more energy. That is not marginal in any way. The comparison you've used only implies a benefit of pwm in spite of all the ways that the MPPT completely floors it. In essence, the PWM should always be used with more than one battery in order to be able tor maximise its output when compared to MPPT.
Thank you Smilinsun for this comparison video. You didn't just tell with words, but you showed as well. This is one of the best comparison videos, I have watched.
I love your teachings, could you release this one ~ it's been long I'm waiting to view it? Kindly clarify me, sir. If, Watt = Volt x amp. For a Solar pv, does it mean Pmax = Vmp x lmp ? Because I have 190W panels with: lmp 10.11a & Vmp 18.80v. Would I be correct if I say: Watt = Volt x Amp, Pmax = Vmp x Imp, and my pv, 190w = 18.8V x 10.11A ?
Great video sir. but for this type of video you would have shown us the battery voltage of the drained batteries... And Also I think the battle should be cost per charge controller... so that it will be more fair.. e.g using the same number of wattage for both in the sense that the pwm will use smaller panels but at the same price and probably the same wattage. since pwm will not use the excess voltage of these 465watt panels.. so if the test can be done again with four 100watt for the pwm and.. one 400watt for the mppt then we have a good battle
The Mppt will always keep track of any voltage and convert to current as needed . A major advantage you will have in raining weather with the MPPT..excess input voltage from PV is easily converted to current!..
A 12 volts panel can not charge a twelve volts system you need a higher voltgae above the nominal voltahe to charge it. 12 volts battery will require a minimum of 16 volts above the nominal voltage to charge. The closest you can get is a 100 Watts Solar that comes with 22 volts VMP which still leaves you with excess voltage that the PWM can't convert.
Please your test is very wrong. Mppt charge controller is can take a much higher voltage and reduce it to a 12 volt battery. A pwm charge controller is not designed for taking 40 volt solar panel into 12 volt battery the loss will be too much. What you should have done is use a 24 volt battery on the pwm and mppt to make it fair😊😊. Please you have to use the panel voltage for the right batteries which is likely 24 V not 12 volt batteries, only mppt can do the conversion
For a 12 volts battery you have a maximum input voltage of 15-50 volts to use. The Essene of the video is to show you the superiority, efficiency and flexibility of the MPPT Charge controller over the PWM. No matter how you run the test an MPPT will be better in conversion and extra functions.
You are only making a case for MPPT, everyone is telling you what should be done.. is connect 2x 150W in parallel to both MPPT and PWM and you will see PWM perform better
@@odedeyidamilare and perform better than an MPPT? If you love PWM charge controller that's okay but no matter the form shape or manner you pitch them a good MPPT will always convert more energy. It's an advanced charge controller, it was developed to do better, so what exactly is the point.
This test shows how to NOT use a PWM charger. PWM works best when battery voltage (eg 12V) is matched with a nominal 12V PV panel, putting out in the 16-20 Vdc range. Same for 24V battery, you have to match a 24V PV panel, putting out in the 30-36 Vdc range. In your test, you are using a 450W half-cut panel (nearly 50Voc) that should be PWM-coupled to a 36V battery, not a 12V battery. Starting with an incorrect setup, the results are necessarily poor, but nobody with some experience, will design a PWM system in this way. If you repeat the test using a 36V battery insted of a 12V one, with same 450W 50 Voc panel, the PWM advantage will be in the 15% to 30%, typically around 20%. You can do the math by yourself by multiplying be 3x your PWM measured currents. With PWM the PV panel must produce only a few volts more than battery voltage. Due to large currents, PWM can be used in small scale and with short cables, while MPPT is much more flexible, can be used with high-voltage setup and corresponding small section cables. However, poor MPPT implementation, common in cheap MPPT chargers, can completely vanify the potential 20% advantage vs PWM.
It is important to understand the purpose of this video . Which is to highlight the superiority of the MPPT over the PWM. For you to achieve good results with a PWM charger you will need to constrain yourself to certain conditions. It is very limiting , but with an MPPT you are spoilt for choices. You are suggesting a 12 volt Solar panels for a 12 volt battery. A 12 volt volt Solar panel can not adequately charge a 12 volt battery, You will need a voltage above its nominal voltage to perform that function. So you will be looking at a 100 watts Solar panel with VOC of 19.2 volts and VMP of 22 volts respectively. Given this PV choice you are still going to be having excess voltage that will totally lost on the PWM. So the question is why Limit yourself so much to this odd conditions because you want to use a PWM. Makes no sense to me.
Good Morning Sir, i have a solar system of 1000kva, 250watts solar panel, 12v 100ah battery and a 30amps solar charge controller, of recent my battery has been draining so much, note the battery is not up to 1year. Can it be that my pwm charge controller is not adequately charging my battery or is my battery dead?
Thanks for the video, awesome But it was also as though you purposely just wanted to violate PWM controllers Or you dont understand how they work Thanks for your hard work again
Kindly click on this link ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-mM-HZYIGocM.html to watch a full video dedicated to explaining how the PWM and MPPT works then decide if I know how it works
0.5c to 1 c is the optimal charge rate for tubular but you can go higher but not advisable as it will affect the cycle of the battery , let say It is a 22 AH battery that would mean 22 Amps will charge the battery full in 1 hour for a 1 c charge rate and 0.5 c will charge it full for 2 hours, but for lithium batteries a lower C rate is better
After system goes into low battery protect, the recovery voltage is the voltage it must rise to (when charge is initiated) before system goes out of that state....
