150V 45A MPPT - roll your own


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phil99

Guru

Joined: 11/02/2018
Location: Australia
Posts: 2301
Posted: 10:04pm 17 Nov 2023      

I guess the most straight forward way to find the current offset is to periodically switch the MOSFETs off for a couple of seconds. The output must then be zero so the offset is whatever the current sensor is now reading. Compensate for that till the next rearing.
Perhaps this could be done either at the start of a max. power scan, or once per hour.