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SuperPV...


OomD
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10 hours ago, The Terrible Triplett said:

Is this ... 

It could be...

7 hours ago, plonkster said:

What's that SGS Thompson datasheet in the background...? :-)

Careful scrutiny of the photo will reveal...

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2 hours ago, OomD said:

Those who read it properly... study it... make notes and annotate it... and learn from it. Then you don't need Ctrl+F.

if you have the time sure. In any case, its some STM Eval board, i'm guessing monitoring or pv optimizer or something like. perhaps let the cat out of the bag hey?. Show us the docid at least :D 

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3 hours ago, Weasel said:

if you have the time sure. In any case, its some STM Eval board, i'm guessing monitoring or pv optimizer or something like. perhaps let the cat out of the bag hey?. Show us the docid at least :D 

Studying a device's datasheet before using it in a design seems the obvious thing to do? I though all good engineers do that... :P

Not a STM eval board, no. It's my own.

 

3 hours ago, The Terrible Triplett said:

Battery balancer?

Not this one, no... but a proper battery balancer is in the works too!

 

3 hours ago, The Terrible Triplett said:

 

3 hours ago, Weasel said:

 

 

3 hours ago, The Terrible Triplett said:

 

 

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11 hours ago, OomD said:

Not a STM eval board, no. It's my own.

aah Ok, very nice, you can however understand the confusion, almost like everything was very strategically placed :ph34r:.

None the less this just got far more interesting. USB , SD, Relays, display board. So.. Central data-logging and processing with remote sensor modules. AC and DC currents and voltages in and out, will it be different modules or a reconfigurable one? time will tell i guess :D

 

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Well done, Weasel, you've spotted most of it.

This is a monitor and control system for my Solar installation, it will feature:

  • Monitoring each battery's voltage individually (string of 4).
  • Monitor each battery's temperature (up to 16).
  • Measure current into and out of the batteries.
  • Measure current and voltage from PV's.
  • Read grid voltage/Wh from the inverter.
  • Integrate all this to determine Wh obtained form the sun, into batteries, used by the house, etc.
  • Control the (Axpert) inverter to make optimum use of the batteries (not just based on voltage, but on SOC).
  • Try and optimise usage of the PV panels.
  • Display any 10 parameters (on the 7-seg LEDs) in real time - for viewing at a glance / from a distance.
  • UI on the LCD for configuration, graphs (maybe), etc.
  • Log to an SD card.
  • Report via WiFi for remote access.
  • Alarm indication with buzzer.
  • Relay outputs to allow, for example, an aircon or geyser to use excess PV energy instead of wasting it once the batteries are full.
  • Estimate remaining battery run time and display in real time.
  • Integrate with the battery balancer (coming soon)
  • Count battery cycles, monitor battery health over time to guess life expectancy.
  • Etc.

All this without having to keep your computer on.

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12 hours ago, plonkster said:

Who makes your PCBs?

Sent from my GT-I9195 using Tapatalk

I normally use Master Circuits in Pinetown, but this time round a place called CircuitBoards in Centurion was cheaper.

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