catweasel Registered Users Posts: 4
So I will ask all these very professional people another question. Have you ever replaced a windmill with solar panels and used those to pump water instead ?  Connected directly to a brushless dc motor. ?


  • mike95490
    mike95490 Solar Expert Posts: 9,583 ✭✭✭✭✭
    There are very few (zero that I know of) ways to combine just PV panels with a pump, to move household amounts of water.

    Most systems require a MPPT control box or a Linear Current Booster (LCB) to provide stable power to the pump, and the system needs to be fairly closely matched.   PV panels simply are too variable in their power output ( clouds and such ) to be able to drive anything other than a toy pump without some sort of control system (battery not required)
    Powerfab top of pole PV mount | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
    || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
    || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

    gen: ,

  • catweasel
    catweasel Registered Users Posts: 4
    Did that over 20 years ago at a time when brushless DC motors were expensive.