Is a Larger DC Motor Needed for Low Wind Speed Power Generation?

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The discussion centers on the challenges of using a DC motor for low wind speed power generation, particularly with a savonius rotor design that struggles to provide sufficient torque to overcome initial inertia. Participants emphasize the need for a motor with low starting torque and suggest exploring alternative rotor designs, such as a hybrid approach combining savonius and darrieus styles. There is a focus on understanding motor specifications, particularly starting torque, to identify suitable motors for the project. The conversation also highlights the importance of matching power requirements with available wind energy and suggests consulting resources like Marks' Handbook for Mechanical Engineers for further guidance. Ultimately, the goal is to efficiently harvest small amounts of power from low wind speeds without frequent battery replacements.
  • #31
anorlunda said:
Wind turbines used on boats use a rope tether to anchor the blade during high winds. It's hard to get simpler than that.
So, to restart the turbine in the calm after a storm, the operator should first remove the tether, and then give a turbine blade a push with their hand.

I believe the OP is looking for a less hands-on solution.
 
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  • #32
Those poor bearings!
 
  • #33
Baluncore said:
I believe the OP is looking for a less hands-on solution.
I think you're right. The OP does not want the KISS solution.
 
  • #34
sophiecentaur said:
Those poor bearings!
True, magnetic or axial ?
 
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  • #35
anorlunda said:
I think you're right. The OP does not want the KISS solution.
But a flat battery is not ‘simple’.
 

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