Slip Rings. Necessary or no?

Wbuffetjr1
Wbuffetjr1 Registered Users Posts: 92 ✭✭
in Wind Power Generation #1
Title says it all. How necessary do you consider a slip ring? 
· Share on Twitter

Comments

  • BB.
    BB. Super Moderators, Administrators Posts: 33,613 admin
    #2
    Slip rings require maintenance and do fail over time (exposed to weather at top of tower... is time 1-5 years???).

    A common alternative is to use a slack outdoor rated cord from turbine to base. With a plug set at the base.

    On average, a turbine should yaw left and right equally. And after 6-12 months, you unplug and unwind the cord, if needed. 

    Bill
    Near San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset
    · Share on Twitter
  • Deveak_Kaizen
    Deveak_Kaizen Registered Users Posts: 31 ✭✭
    #3
    I've wondered the same, is it necessary that it turn 360? couldn't you just put a stop peg and keep it from spinning completely? Might slam into it from time to time though.
    · Share on Twitter
  • mvas
    mvas Registered Users Posts: 395 ✭✭✭
    #4
    Adding a peg will make the Wind Turbine less efficient, whenever the tail is pinned against the peg and cannot point the rotor shaft directly into the wind. Cost Justifying a Wind Turbine can be difficult, making it less effective on purpose, makes no sense ...
    · Share on Twitter
  • mike95490
    mike95490 Solar Expert Posts: 9,583 ✭✭✭✭✭
    #5
    A stop peg would be a very bad idea, both because of slamming into it when the wind changes, and the inability to rotate toward the best wind.
    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

    solar: http://tinyurl.com/LMR-Solar
    gen: http://tinyurl.com/LMR-Lister ,

    · Share on Twitter
  • mvas
    mvas Registered Users Posts: 395 ✭✭✭
    edited December 2019 #6
    Wbuffetjr1 said:
    Title says it all. How necessary do you consider a slip ring? 
    What is ...
    a) The Make & Model # ?
    b) The diameter of the rotor ?
    c) The rated watts and at what wind speed ?

    It is difficult to justify the cost of a good set of slip rings, for a small wind turbine that generates less than 500 watts. 
    There are a lot poor quality slip rings, that will cause you too many headaches.
    So, what happens when the Slip Rings "fails open", does your wind turbine furl or spin out of control, in a high wind?
    The electrical cord must be UV RATED, if it is exposed to sunlight.
    · Share on Twitter

Categories