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Author Topic: On a proposed permanent magnet generator  (Read 247 times)

Offline Energetica

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On a proposed permanent magnet generator
« on: October 19, 2019, 05:02:13 PM »
Introduction
The following concept sketch describes an electric motor that, with low power consumption, constitutes one element in a self-driven generator setup. The sketch should be considered a series of open questions rather than a full-fledged solution. The hope would be that the sketch, based on the “open design” philosophy, may act as general inspiration, a starting point for optimization and development of the ideas presented, and—eventually—a contribution to the search for easily accessible, cheap, and decentralized energy supplies in both private and communal contexts. The text has been divided into two, the first part describing the overall concept, while the other part briefly describes a concrete experimental setup based on the concept.

Disclaimer: As the author of the document, I’m simply passing on the ideas presented and don’t actually work with the concept, don’t intend to, and possess no detailed knowledge on the subject. Because of that, the description—which is primarily based on conversations with the now deceased inventor—is without a doubt lacking. I also won’t engage in discussions of the concept.


The concept
The motor consists of a vertical, rotating rod fitted with two discs or, alternatively, a disc and some kind of bottom metal plate. On the periphery of each of the discs, an even amount of permanent magnets are attached—every other north and every other south. Between the discs or between the disc and the metal place, an air core coil is placed. The air core coil receives power from a vario transformer.

The concept is grounded in the idea that the magnetic field of the air core coil can act as a kind of contact that “pushes” the magnets of the discs with short impulses, which in turn creates mechanical motion that becomes stabilized through a meaningful relation between the impulse of the air core coil and the rotation of the disc.

As such, the vario transformer provides the starting impulse for the motor via the air core coil and delivers at the same time to the setup a supposed appropriate frequency at 50 Hz alternating current, which means that the magnets on the disc (say 100 in total) are each individually propelled on when the disc’s rotations land on 100 per second: 50 times positive sine and 50 times negative sine. The magnets on the disc will, in effect, move at 50 Hz and therefore match the input.

Sine: +Sine; -Sine
Sine: +Sine; -Sine
—-
—-
—-
100. Sine: +Sine; -Sine

As each sine wave equals 0.5 Hz, the entire setup would be based on that same figure.

Note: Whether in praxis it actually makes sense to base the design on 0.5 Hz is not established. An alternative might be to base the process on, for example, 1 Hz with the disc doing one full rotation every time the coil receives an impulse. Whatever the details, the basic idea remains that rotations in one way or another should correspond to the impulse; that is, the Hz. This is essentially the “collaboration” or match that needs to be established.

It is furthermore central that the motor’s power consumption is low. The absence of an electromagnetic core in the air core coil limits the loss of energy to resistance forces, which also limits the necessary energy in the conversion of impulse from vario transformer to magnetic fields (although this of course also means that the magnetic field created is relatively weak). In addition, a further reduction in energy supply may be accomplished through the use of various tweaks to the setup. For example, one could imagine that the kinetic energy of the movement of the disc is somehow relevant in the overall equation and that this effect might be strengthened with the use of a larger and heavier disc. Many such potential optimization moves might exist, and some may even be decisive in terms of having the concept make sense at all.

At this point, the motor concept is supposed theoretically valid, and everything should run by itself.

The assumption would then be that the energy-efficient motor—technically optimized and designed at an appropriate scale—when embedded in a larger generator setup, slowly helps build surplus energy, eventually settling in a process that is no longer dependent on input from the vario transformer because of a gradual lowering of the power consumption and the fact that the energy for it is part of what’s created in the generator itself. The expected additional surplus energy can then be directed towards external purposes.

Because the concept is scalable, it is possible to tailor it to various power demands and purposes.


Prototype A: Elements and setup (images attached)
Here follows a short description outlining the elements of a concrete experimental model based on the motor concept. The model consisted of materials that were already available at the time and place of the build, and the various parts of the setup were only partly assembled and activated. As such, this description has only been included in order to document the entirety of thinking and doing in relation to the practical realization of the concept. Because of that, this also should not be regarded an argument in favor of the soundness of the overall concept or one detailing how to optimally realize it.

The model consists of a stationary soft iron plate (40x30 cm), supporting a vertical, rotating rod with a disc attached (⌀17,5 cm). Mounted in the periphery of the disc are 6 permanent magnets—every other north and every other south. An air core coil (0.65 mH) is placed between the iron plate and the disc. The coil is connected to a vario transformer.

During the first actual test, a 5V battery was used without a resistor, and the battery immediately died.

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