DC generator
DC generator
(OP)
Dear community,
I would need help for a technical question. I want to use a motor for generate electricity. I want to do it within a small wheel (about 8cm diameter) and I want it generates around 2W at 200rpm. Do you know a motor matching this requirements?
I was thinking about this one: http://www.rctimer.com/product_914.html
But I don't know how much power it would generate with so low RPM. It is also importan it does not generate too much noise...
Any idea?
I would need help for a technical question. I want to use a motor for generate electricity. I want to do it within a small wheel (about 8cm diameter) and I want it generates around 2W at 200rpm. Do you know a motor matching this requirements?
I was thinking about this one: http://www.rctimer.com/product_914.html
But I don't know how much power it would generate with so low RPM. It is also importan it does not generate too much noise...
Any idea?





RE: DC generator
RE: DC generator
A toy permanent magnet motor?
Two watts will be easy if you don't care about the voltage.
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: DC generator
I think it is an option, but not the most efficient. All that I have seen so far are small motors with a gear box. I need a quiet high torque since it will be running at 200rpm...
I find more interesting approach a wind turbine of 8cm diameter! They are not easy to find at all! Nobody wants wind turbines for generate only 2 Watts! :(
I think I will do one myself, based on this:
http://www.thingiverse.com/thing:55321
Best regards
RE: DC generator
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: DC generator
I was thinking in do it myself, similar to the one in the link. I want to do an axial generator with dual rotor. Then I can increase significantly the amperage. I need to find the proper magnets to generate 2W at 200rpm.
As you said, the stator will increase the resistance. But I don't get the part of non-linearity? What does it mean?
RE: DC generator
As the voltage is lowered, the load resistance must also be lowered to maintain the same current.
Bill
--------------------
"Why not the best?"
Jimmy Carter