September 22, 20241 yr I am installing a 48v PV system. Because of shading issues I need to connect each panel to its own mppt. This means I need a PV panel that can output over 61v NOCT in order for the mppt to start up and put some amps into the battery bank. So I need to find high voltage PV panels. Not finding much out there. Anyone ?
September 22, 20241 yr How about these, not gonna be cheap: https://media.unboundsolar.com/app/uploads/media/2020/02/08170324/panasonic-325-watt-module-96-cell-hit-black-solar-panel-specs-3206694517-4.pdf
September 23, 20241 yr 21 hours ago, Delta9 said: I am installing a 48v PV system. Because of shading issues I need to connect each panel to its own mppt. This means I need a PV panel that can output over 61v NOCT in order for the mppt to start up and put some amps into the battery bank. So I need to find high voltage PV panels. Not finding much out there. Anyone ? Why not using standard panels and optimizers on shaded ones?
September 24, 20241 yr Author 22 hours ago, Mauritius B said: Why not using standard panels and optimizers on shaded ones? well that is one way forward and I am considering microinverters. However this is for my boat and I haven't seen or heard of micro inverters being used in that environment.
September 27, 20241 yr On 2024/09/24 at 2:36 PM, Delta9 said: well that is one way forward and I am considering microinverters. However this is for my boat and I haven't seen or heard of micro inverters being used in that environment. It is not microinverters what you have to look for. You need optimizers. it's not the same thing. Optimizers work on low voltage DC while microinverters work on high voltage AC. SolarEdge-Panel Solar fotovoltaico MPPT, P320-5NC4ARS optimizador de potencia, estabiliza el voltaje para mejorar la capacidad - AliExpress 1420
September 27, 20241 yr You get boosters that can boost 12V up to 90V. I think the MPPT will sense the lower current and still operate correctly. At less than $20 it's worth a try when using normal 40-50V panels in parallel as to try and get at least 1 panel without shade. Am I nuts with this post
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.