Torque Shield Offset Motor

[Lunkster]

Torque Shield Offset Motor

This motor is only a theory. 
This design has magnets placed in pairs in both the rotor and stator assembly.
Each pair are at 90 degrees to each other.

The magnets in the stator assembly have the common poles on the disk side  of the stator
This means the other poles or pointed more toward the rotor assembly.
The poles in the rotor pair are different.
They are placed so that magnet closer to the rotor during incoming rotation
creates attraction to the stator magnets as they come closer to each other.
The other magnet of the rotor pair will cause repulsion to the stator magnet pair
after it has passed the equilibrium, or sticky point.

Now this orientation may not be enough to cause an offset between
the interactions of troques between the rotor and stator assembly.

So what if a shield was added at the place where the interaction
normally would cause reverse torque on the motor?  Would the result be an
offset of torques in the motor? After looing at all the designs using shielding that
have not come through yet,  then the answer is most likely not.

But,  Due to the fact that this design has two features in it that are designed to
cause torque offset, then maybe it would.

Now one video I saw of what looks like an operational all magnet motor using
a small switching magnet.  This switching occurred during the null or
dead spot in the flux of the magnet arrangement.
So, can the shield create a dead spot in the magnetic field ?
If the dead spot is created,  would the shield material attraction to the stator
permanent magnets create more restriction of motor movement than the
benefit of having the shield in the first place? 

What modifications should be made to this design, in order to even
have a chance of being functional?

I look forward to your thoughts.

Lunkster

P.S.  I think it is another optical illusion, But without building it, I will never know

[citfta]

Hi Lunkster.


Your idea might work if you have a different number of stator magnets compared to the rotor magnets.  In other words have maybe seven rotor magnets and eight stator magnets.  Then as they rotated you would only have one sticky spot while you would have several attraction and repulsion spots.  You wouldn't need a shield then.  I don't have time right now to try and build that but maybe sometime in the future I can check out that idea. 


Thanks for posting this idea.
Carroll

[Lunkster]

Hi Lunkster.


Your idea might work if you have a different number of stator magnets compared to the rotor magnets.  In other words have maybe seven rotor magnets and eight stator magnets.  Then as they rotated you would only have one sticky spot while you would have several attraction and repulsion spots.  You wouldn't need a shield then.  I don't have time right now to try and build that but maybe sometime in the future I can check out that idea. 


Thanks for posting this idea.
Carroll

Carroll,

That is a great idea! 
I will make sure to do that if I build one of these designs.
Thank you so much for your response.

Lunkster

[Lunkster]

Because of the response I got with the great idea in it, I wanted to make changes to the drawing making sure to note the offset of rotor to stator magnets sets.  What this offset of magnet sets will do is to have each set of rotor to stator sets at a different position with each other.  What this will do is to even out the forward and reverse torque locations in the motor.  This would prevent the motor from having a start up problem.  This would also create a smother motor operation with greatly reduced vibration in it.  In an all permanent magnet motor, this is easy to incorporate into the design.  If it was a motor with electromagnets, then you would need to have each coil on a different power cycle.

Since I added that note into the drawing, I wanted to make one more change.
This is to add shields to the stator magnet pairs.  What would I want to do that?
When I have a shield on the rotor permanent magnet pair and not the stator magnet pair then
the stator magnets would have more attraction to the rotor shield as it passed by it.
With the stator shield and the rotor shield in place, the interaction between the stator and rotor assembly
should be at a minimum. 
This minimum or null point is reduced at the location of having reverse torque on the motor movement.

Now I do not know how to eliminate the reverse torque from an all permanent magnet design. 
My goal with this design is to create an offset of having more forward torque than reverse torque so that
the motor would operate from the "built in torque" that permanent magnets have in them.

Again,  Thank you so much for your input.
I always value each input that I get from people.

Lunkster

[Low-Q]

The shield will affect both the stator and rotor magnets, so when the shield is present, it will be less attractive and repulsing forces between the two magnets polarity, and also the rotor magnet will be partially attracted to the shield, just as the stator magnet is.
This will in turn weaken the torque, and therefor weaken the force to overcome the weaker sticky spot.
The result is therefor given. It won't work better or worse without or with a shield - unfortunately.


You could introduce the shield just before the sticky spot, and removed it right after the sticky spot.
The problem then is that the shield is actually repelled outside the gap between two attractive magnetic poles.
When the shield is removed then the magnetic poles are opposing, the shield is attracted when you want to pull it away.
This will require energy to introduce and remove the shield at desired positions of the magnets.


Br. Vidar