I have been testing my new 16 pole stator for the RACA. I placed the rotor inside of a 6" copper pipe. I can move up and down easily. But when I rotate it there is great resistance. This is interesting but I want to understand better. This diagram is my first attempt in this direction.
The first set of magnets show what I believe the invisible flux lines would look like, at rest and unimpeded. Do the flux lines have a a known direction? As in the electron flow of electricity, negative to positive.
The second picture shows the cross section of the copper conductors. When the coil is shorted, the flux lines now encounter the conductor and are in my thinking, stretched as the rotation starts.
If I rotate the rotor inside of the copper tube at a fixed rpm and measure the output torque against the outer tube, (Neglect the heat factor at this point.) is there a peek point that the flux will not apply any more force to the outer tube? A maximum slip point as it were.
Again, could this method be used for calculating cut in and furl points required for blade design?
Input anyone?
Joseph. |
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