150V 45A MPPT - roll your own


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rogerdw
Guru

Joined: 22/10/2019
Location: Australia
Posts: 877
Posted: 01:24am 17 Mar 2024      

  poida said  this is a great result, Roger.
The mppts are running at top power level too.
Anything getting too warm at 55A?


Yes, I'm rapt that it works so well  ...  thanks for all your blood, sweat and tears to get it to this stage.

The only things that get warm are the chokes  ...  and the hottest I've seen them are around 50 degrees on those 41 degree days we had recently. Otherwise they float from about 30 - 45 depending on conditions.

The heatsinks really don't get much warmer than ambient. I have a barrel fan across the bottom blowing air up past heatsinks and chokes and it comes on at 40 and off at 35. Copes quite well so far.