GANNYGANNY Registered Users Posts: 7 ✭✭
I  had used N35 magnet in the construction of my magnet rotor. I now intend to use N42. What is the PROS and CONS on the efficiency  of my wind generator if I  use magnet of higher strength ?  Is the RPM of the blades going to be reduced?  Your answer will be HIGHLY APPRECIATED as I about to buy the new magnet N42  THANKS IN ADVANCE


  • mike95490mike95490 Solar Expert Posts: 9,298 ✭✭✭✭✭
    I'd expect a stronger magnet to have more influence (drag) on the coils and would slow the turbine down in the same speed wind, with the same LOAD on the output.  A lot has to do with the load your batteries present the turbine, no load = higher RPMs (till it overspeeds and destroys itself)  More load = lower RPM's  (often a dead short, applied in stages, is used to slow a turbine)
      So you go to your design nomograhms and see what happens.
    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 ||
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    gen: ,

  • jonrjonr Solar Expert Posts: 1,386 ✭✭✭✭
    Field strength determines max amps, speed determines voltage.

    I am available for custom hardware/firmware development

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