Motor to left or nopolar motor shows one armature magnet or current carrying conductor. There could be thousands depending on the scale of the project. The current carrying armature conductor could be replaced with a permanent magnet which is setup to create a magnetic field equivalent to a current carrying armature conductor. :) There is no need for commutation as the armature current carrying conductor never needs to be reversed to stay relavent to the magnetic field through which it is traveling. A regular dc motor it to the right. Whatya think.
So you need two radially magnetized permanentmagnets - one bigger than the other. Inside the airgap between those you put a current conducting wire or a permanent magnet. What do you do with the returning magnetic field that will eventually cross that wire or permanentmagnet in the opposite direction?
You idea looks much like a brushless motor that runs on pure DC current. Sadly, all electric motors have to have either commutators or an electric controller that converts the current through the wires into AC. All electric motors are eventually AC motors. One exception is where the powersource is following and are a part of the conductor - however never brushless; the homopolar motor.
I have twisted my mind several times to find a way to make a brushless DC motor. It allways ends up in cancelling magnetic fields. Only if those magnetic fields never came back, the problem had been solved.
My first thought when looking at you diagram was that it could work and the current would flow parallel to the axis of rotation. That would be cool, right?
BUT, then I got thinking about it more. Acceleration is the key. If your electrons are going about in a circle then they will experience an acceleration towards the center. It's basic physics. The problem is that they wouldn't be accelerating perpendicular to the magnetic. They would experience acceleration parallel to the field and in that case would not be deflected at all. You need the acceleration to be at a right angle to the field.
Sorry man. I don't think it would work. The acceleration is at the wrong angle to the field.
My concept is that in an armature when viewed from the end with the commutator cut away the circular polarization of the magnetic field about the armature conductor cancels out the field lines in the direction of travel and reinforces them behind the direction of travel. Since in the armature conductor travels through the field in two relavent directions the current needs to be reversed in the armature in order for the armature induced magnetic field to cancel out the stator magnetic field in the direction of travel. This creates a magnetic vacuum ahead of the conductor and a magnetic highpressure behind. Below is a picture. The conductor in the nopole motor never sees a reversal of the magnetic field relavent to its travel. Current would always be into the page in the nopolar where as in an ordinary armature the current has to go into the page and then out of the page depending on which way it is traversing the stator field.
Quote from: angryScientist on January 13, 2010, 07:55:07 PM
My first thought when looking at you diagram was that it could work and the current would flow parallel to the axis of rotation. That would be cool, right?
BUT, then I got thinking about it more. Acceleration is the key. If your electrons are going about in a circle then they will experience an acceleration towards the center. It's basic physics. The problem is that they wouldn't be accelerating perpendicular to the magnetic. They would experience acceleration parallel to the field and in that case would not be deflected at all. You need the acceleration to be at a right angle to the field.
Sorry man. I don't think it would work. The acceleration is at the wrong angle to the field.
no, energy doesn't like to do work, energy is for those that have been forced to do work. I don't see why you don't see this. i don't know why you don't see my analogy. my analogy is universal, it works with all 'forces'.
Quote
no, energy doesn't like to do work, energy is for those that have been forced to do work. I don't see why you don't see this. i don't know why you don't see my analogy. my analogy is universal, it works with all 'forces'.
Sorry there onthecuttingedge2005,
I hadn't been following your every post. I've had my mind occupied with other more pertinent, to myself anyway, thoughts. I guess I'm just selfish that way but then again that is a universal trait among all living things and not only that, it is an essential trait for preservation.
Aside from that, I have been reading your most recent posts trying to figure out just what you are talking about.
Hey Sparks.
Looks good. If ya look at it, it is a homo polar and the mag plates just have a curve. But what is different is the magnetic field is cutting the copper at the same speed on the inner and the outer as compared to a disk setup where its slower on the inside and faster on the outside.
That conductor could be a drum. Or spokes. But I wonder how that constant field speed would affect the output as compared to the disk.
Mags
The brown rod protruding from the armature down into the slot is the permanent magnet polarized so as to duplicate a current carrying conductor. The little arrows in the other diagrams show magnetic field line polarities not rotation.
The arm in this drawing swings. There is no connection shown from this motor to a load. Unloaded this machine would blow itself apart.
The drawback is that the magnetic lines must return back to the opposite pole. And those lines must somehow cross the wire again. Ther is just as many magnetic lines that is "exiting" a pole as those which is returning back to the opposite pole. So any forces will allways cancel eachother out somehow, somewhere.
Below are a couple of pictures. One is the magnetic field lines in a dc shunt wound motor. It is a crude representation of the magnetic circuit inside a dc stator field winding. Permanent magnets are also used to produce this field in a permanent magnet dc motor. I have also drawn and included representations of flux lines and direction in a barmagnet and a crude horseshow magnet or cowbell magnet. As you can see in the cowbell the armature of the nopole will be traveling through magnetic field lines that always have the same vector.
You may need the brown polarized magnet to physically spin. You could harness the "magnus effect" that is used for spinning cylinders for wind sails. It should also work for polarized fields if there is a direction of resistance.
I was told by a permanent magnet guy that it was possible to produce a permanent magnet that duplicated exactly a current carrying armature conductor of 30 40 100 whatever amperage desired. The problem I was warned about was the speed of the armature would cause heating in the armature pm beyond the curie point of the pm. The pm field would then melt down. When you investigate the way they make permanent magnets they are really room temperature plasmas.