Canceling Lenz's Law - Methods

[supermuble]

Bill Muller of Canada who is dead now, still has a very good website on electrical generators maintained by his daughter.

Here is what it says about Lenz's law on Bill Muller's website:

"MAGNETIC DRAG

There is another loss in generators, caused by the approach of the electromagnet coils to a magnet. When a magnet moves by a coil, the magnet causes the coil to become an electromagnet with the same polarity as the magnet. It is well known with magnets that like poles repel each other. Repulsion causes drag on the rotor. This "back emf" bucks the motion of the generator, making it more difficult to turn the rotor, which of course reduces the effective power output relative to the power input.

Thus, all generators and motors consume some mechanical torque just to continue spinning. The Muller Dynamo virtually eliminates all magnetic drag. It eliminates magnetic drag to such perfection that a 450 hp generator can be spun with one hand. That is absolutely unheard of. Normally, several horsepower would be required to turn the rotor. The Laws Governing Electricity and Magnetism"

And this is the same principle I have been describing. No energy required to move (change) a magnetic field. This is from the Muller website.

"WORK REQUIRED TO MOVE A MAGNETIC POLE:

When a magnetic pole is moved, work must be done against any force acting on it if it is moved in the direction opposite to the force, and conversely, work will be done (or can be extracted) by the magnetic pole when it moves in the direction of the force. In other words, when the magnet falls to another magnet, as when it pulls a rotor around, useful work (energy we can use) is obtained. But trying to move the magnet off of the magnet requires equal work, and so we end up with nothing useful left over.

However, if no work is done in moving a magnetic pole around a closed path in a magnetic field,
such as a rotor inside of a stator, the net effect would be that work could be extracted by the movement around the complete path without any other change in the system, giving the possibility of a perpetual motion machine that is seemingly contrary to the laws of mechanics.

When Odd and Even numbers of magnets and poles are used as in the Muller Dynamo,
there is no work necessary to move one pole from another."

See website here:

http://www.mullerpower.com/Research/Research.php#Research1

[Nali2001]

"When Odd and Even numbers of magnets and poles are used as in the Muller Dynamo,
there is no work necessary to move one pole from another."

They refer to the removal of magnetic cogging here.

The alleged lenz diverting propriety's of the muller system come from the coil winding style and switching electronics.
The Muller system is an interesting device, wonder if his daughter will do something with it.

Steven

[khabe]

Pole Slot combination  - its wellknown method to minimise iron core electric machine cogging (or "magnetic drag" id you like . When added scewed rotor magnets or scewed stator teeths
then cogging will be minimised factually near zero like air core machine (ironless) has zero cogging.
"Dragless" generator (when magnetic rotor, wires and iron core or air core) unfortunately possible only without load. I have readed near all what honourable Mr.Muller wrote, he has done big and nice work ... regrettably not much useful things about his generators could be found from . Declared by him his 450 hp generator - yes he turned by hand - but he never can make electricity using musculars even hundred times less - perhaps 450W vey short time. More its impossible. Even when this generator is able for 450 hp at all ( I have deep doubts)  - to spin it you must spend bit more than getting from output. Perhaps he invented something else ... Im sure he did ... but this "this" is not this "Dynamo".
What is Muller´s machine - Muller Dynamo - its permanent magnet machine wheres stator cores as well as rotor poles have no closed magnetic circuit.
http://www.mullerpower.com/index2.php
Anyway - I do respect highly this old man
About pole slot combination you can find: http://www.ee.kth.se/php/modules/publications/reports/2004/IR-EE-EME_2004_005.pdf
regards,
khabe

[hartiberlin]

I was told by a good friend who visited once Mueller and wanted to work with him,
that the cogging forces in idle RPM mode were reduced, but that , if you loaded the generator
you also had to apply more torque to the drive motor, so it was not a real dragless generator.

My friend then mentioned that to Muller and he did not want to hear it and
then they had a verbal fight, when I remember correctly and my friend
dropped out of the "contract".

[hoptoad]

I was told by a good friend who visited once Mueller and wanted to work with him,
that the cogging forces in idle RPM mode were reduced, but that , if you loaded the generator
you also had to apply more torque to the drive motor, so it was not a real dragless generator.

My friend then mentioned that to Muller and he did not want to hear it and
then they had a verbal fight, when I remember correctly and my friend
dropped out of the "contract".

I agree that Mullers generator is not a "dragless" generator under all conditions. But the odd/even Muller configuration, is without doubt, a cog-less (or cog reduced) generator.

The distinction between cogging torque and magnetic drag is a definitive one. Cogging torque is a macro - product of core design and configuration, especially in salient core open magnetic systems. But magnetic drag is an inherent characteristic of all (ferromagnetic) cores (not air cores), and is determined principally by the make up of the core material.

It is possible to build cog-less (cog reduced) motors/generators, but magnetic drag from the core material is still always present.
The drag produced when current is drawn from the coils (counter MMF) is another form of drag altogether, and is not the same as core drag which exists independently from coil current consumption.

In even numbered coil to magnet configurations, the cogging torque can be so great, that at certain RPM's, the acoustic vibrations generated can produce harmonics that will literally cause the motor/generator to "scream". In the past, I've built some very high precision, high speed Adams motors, that have only consumed a few watts of power, but have produced such shrill acoustic vibrations (at very high speeds), that a set of ear-muffs need to be worn.

The great advantage of Mullers odd / even, stator to rotor magnet configurations, is that they prevent standing acoustic waves from developing due to cogging torque. This means that less system energy is wasted in the form of rotor and stator acoustic vibration.

Cheers