Guru
Joined: 02/02/2017
Location: AustraliaPosts: 1483
| Posted: 02:39am 29 Mar 2020 |
Hugo, I ordered 5 boards. I will need 2 only so I can send you one if you like.
But first I need to get a few things done.
The boards are arriving soon. I have bought the SMD resistors and caps, MOSFETs and diodes. I have enough DC bulk capacitors. I have fleshed out the code which has not been tested in any way.
I need to be able to simulate a solar panel. How?
No idea actually.
I have some linear bench power supplies that permit constant voltage and/or constant current control. I think I am going to use them.
Maybe have one with 5A max limit, and 30V output.
Have other 1A max and 45V output. Put them both in parallel.
This will give a clear peak power of 6A at 30V, dropping very quickly to 1A at 31V.
I have a nice buck converter with input and output voltage and current sensing.
Maybe with a bit of software I could make it provide 5A for output volts from 5 to 30V and reduce amps to zero by 35V output. This would simulate well a 5A 30V (150W panel).
And then I need to simulate a battery. I have some batteries but they are charged up.
I am thinking of a microcontroller based DC load. The code will apply a constant DC load for voltages up to 24V and reduce it to near zero at 27V.
That will give the mppt charge function a workout.
wronger than a phone book full of wrong phone numbers