Tinman's coil shorting circuit

[verpies]

From the little I know about this subject, something is strange.
What I find interesting is the fact that the motor runs at all with just input to the armature.
How is it that the armature induces the stators and have motor action???

You should not find it strange because it is a simple case of an electromagnet (rotor) attracting some soft iron (the stator).
If you have ever seen a magnet attract a steel nail, then you're familiar with this effect.

Take a look at a diagram of the rotor electromagnets below.  Half of the segments produce south poles and the other half - north poles.
Imagine a radial line that separates the south poles from the north poles.  The position of this line is determined by the angular position of the brushes and the way the rotor is wired (with an angular offset or without).  In Fig.2 this is the blue line.

Now if there is a soft steel stator pole anywhere nearby then the rotor will be attracted to it in such a way that the middle of the group of e.g. south poles is the closest to it.
The middle of the pole group lies on another radial line, that is perpendicular to the aforementioned line dividing the south and north poles.  Let's call it the "middle line".  In Fig.2 this is the orange line.

Depending on the position of the brushes, the middle line will be at an angular offset to the soft steel of the stator pole and then the rotor will experience a torque that will attempt to align that middle line to the center of the stator pole. If the brushes are positioned so that the middle line is aligned with the stator pole then the rotor will not rotate, because it will be already aligned for maximum attraction to the soft steel of the stator pole.

Tinman's variation on the scheme adds an embedded magnet^* inside one of the stator poles.
This magnet is polarized in such a way as to counteract the attraction of the rotor to the soft steel of the rotor's pole, in other words the magnet is polarized in such way as to repel the rotor's middle line.


* Tinman's scheme also adds a soft iron tube and an additional embedded winding which generates magnetic flux opposite to the magnet's flux.
AFAIK both stators windings are not powered externally and the embedded winding inside one of the stator poles is not powered either.  Instead all 3 windings act as generator windings, which constitute electric energy output of this device, from the point of view of external terminals.
Only the rotor is powered externally.

[Magluvin]

Much like walking down steps while gaining altitude at the same time.

people just will not spend enough time to try and answer these questions-they like it all handed to them on a silver platter. The first part of the operation is simple-the magnetic field on the rotor is attracted to the steel cores of the stator. The part no one can answer is this-why dose the RT speed up when a load is placed across the stator winding's?. This should cause an apposing magnetic field,and the rotor should stop. Thing is,it dose, if the current is drawn from the stator coil in one direction. But if the current is drawn from the stator coil in the other direction,then the RT speeds up<-- this is the part no one can answer-why. The answer is quite simple if you take a close look at what is happening within the workings of the RT.

Hey Brad

I had read Verpies post first. So I get the attraction method.  But you hit the nail on the head and answered my question by just letting me know that applying a load to the stator doesnt impede motor action.  Il see if I can figure it out.  Thanks

Mags

[Magluvin]

Hey Brad

I had read Verpies post first. So I get the attraction method.  But you hit the nail on the head and answered my question by just letting me know that applying a load to the stator doesnt impede motor action.  Il see if I can figure it out.  Thanks

Mags

Romero used magnets behind his stators also.     Not the same config, but maybe there is a common answer.

Mags

[Magluvin]

Thanks for the thorough explanation Verpies. 

Mags

[tinman]

Hey Brad

I had read Verpies post first. So I get the attraction method.  But you hit the nail on the head and answered my question by just letting me know that applying a load to the stator doesnt impede motor action.  Il see if I can figure it out.  Thanks

Mags

Thats correct. In fact, it increases motor action when the generating coil is loaded-and by a large amount-while at the same time , power consumption decreases by at least half.
If you can work out why that is, then you will work out the rest of it.