Warning for engineer porn? I don't know but your board is beautiful, you should have transparent door panel!
Anyway, first step is to understand what MPPT really does, it's more simple it may look like. Then source/build your hardware.
Who here has the best dump load management system going on?
- Thread starter AlaskanNoob
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Anyway, first step is to understand what MPPT really does, it's more simple it may look like. Then source/build your hardware.
AlaskanNoob
Solar Enthusiast
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It says it's age restricted as requested by the uploader. I didn't see anything in the video that would need to be age restricted.
Why do you say it's for the adults in the room, what did I miss?
To make sure you'll watch it..?
wpns
Solar Joules are catch and release
Also didn't watch the whole thing, it seemed particularly devoid of any information, didn't have time to watch a 20+ minute video. I'd think some kind of interface to something like https://www.amazon.com/Voltage-Regulator-Electronic-Thyristor-Controller/dp/B08VNYJLDT would do the same thing without all the mystery.
Fore sure not, that is for AC, and don't have any "brain" in it.
But if you are on AC, with MCU and sevo motor you can use that as well....
2strokeforever
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I made a pcb that measures MPPT and outputs a 0-5v or PWM signal, it controls a VFD drive to use excess solar to run my AC. Works good, but currently runs thru the charge controller and inverter.
In the process of making it send HV DC directly from the panels to the VFD, skipping the steps of converting to 48v and back up to 240v.
I also have a big MPPT that sends HV DC direct from the panels to a 9kw heating element that runs the infloor heating.
Also have a few other things along these lines in the works.
Once everything is ironed out might start offering them for sale if there is enough interest.
In the process of making it send HV DC directly from the panels to the VFD, skipping the steps of converting to 48v and back up to 240v.
I also have a big MPPT that sends HV DC direct from the panels to a 9kw heating element that runs the infloor heating.
Also have a few other things along these lines in the works.
Once everything is ironed out might start offering them for sale if there is enough interest.
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If you want something low budget for DC, you could google "XY6020L" programmable power supply. I played with it implementing my own mppt , it's very ok if 60V/20A max is ok for your load.
Interesting could also be MPPT solar pump regulator up to 110V/2000W https://it.aliexpress.com/item/1005...wixr0PFL&utparam-url=scene:search|query_from:
Not sure if it could be adapted for dump load but if somebody has been playing with these, info would be appreciated.
Interesting could also be MPPT solar pump regulator up to 110V/2000W https://it.aliexpress.com/item/1005...wixr0PFL&utparam-url=scene:search|query_from:
Not sure if it could be adapted for dump load but if somebody has been playing with these, info would be appreciated.
efficientPV
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It is for the adults because you have to make some effort to build it. This isn't kiddie table solar stuff. I don't see how the XY6020L would be much good without extensive modifications that only a half dozen people here could do and things like that don't last very long. This is an array DC based system with arc interrupt so heating elements can be daisy chained using conventional thermostats without issue. My board is a deluxe version but similar performance can be obtained by modifying this $10 inverter board. I've searched for years to find some exiting produce which can be easily modified, I haven't found any. An old MSW inverter would be a great choice. It is well beyond what people can do here. Maybe you should convince will to test the effectiveness of this concept diversion board rather than just be an open box guy.
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You really don't have to modify xy6020l if you happen to have your string Vmax/Imax matching. Obviously you have to take care of the temperature control and safety valves separately, without arch suspension. My soldering skills are worst in this planet, would't even try to make your pritty board from scratch. $10 inverter mod maybe, if you give little more info?
I have my system now grid tied with AC dump load controller, but I have new sauna project in my mind where I will go with DC.
Vigo
Solar Addict
I have done some really basic automatic 'load shedding' but not diversion loads yet. Still, being a simple man and no electronics guru i would just be using a $25 'voltage monitoring relay' which is basically just a voltage window switch with an adjustable delay timer to avoid short cycling.
Voltage monitoring relay.
It's been said more or less already, but i think when using the very high end of the voltage range on a 48v lifepo4 system, such as 55-56v, there is not AS much variance from actual SOC because that 1volt difference covers a fairly small range of SOC. Aka working off of voltage trigger points instead of SOC is 'not as bad as it sounds' when you are using the voltages at the extreme end of the range.
Voltage monitoring relay.
It's been said more or less already, but i think when using the very high end of the voltage range on a 48v lifepo4 system, such as 55-56v, there is not AS much variance from actual SOC because that 1volt difference covers a fairly small range of SOC. Aka working off of voltage trigger points instead of SOC is 'not as bad as it sounds' when you are using the voltages at the extreme end of the range.
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