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This is my writing and development about the Interference disc generator, and the permanent magnet dynamo machine, and other related inventions. I have always been intrigued with electricity and magnetism and aetheric energies starting at a young age. Back in 1980 I wanted to do something to help get my large vehicles better fuel economy. With this goal in mind, I experimented and designed my first heat exchanger vaporizer system to do my part to clean up our cars and trucks, fig 1, 2, and 3 are two earlier vaporizer units under construction. For more information about this fuel system, please refer to my vaporizer fuel system report. The main body of this writing is referring the permanent magnet dynamo system that has been in the making since 1987, starting after the development of the interference disc generator.

Fig 1 Fig 2 Fig 3

I invented the Interference Disc generator concept while I was employed at Giant Yellowknife Mines NWT from1983 to early 1986. The idea of using metal blocking plates to shield magnetic fields stirred in my mind while working around heavy electrical mining equipment, and 1000hp and other electric motors with exposed coils that have heavy metal around the outer casing. I did a search at the time and found John Ecklin’s work very interesting with his application of the shielding effect. During my off time in Yellowknife, I was experimenting with the interesting effect of producing induction with a stationary coil mounted beside a stationary magnet with a small air gap maintained between the magnet and the coil. During the construction of my first disc machine, I called it the Interference Shielding effect because of the interference the blocking disc does to cause induction, thus the Interference Disc Generator fits the description. The first transformer coils I used to test the interference shielding effect were used from old radios, and the magnets were alnico types. Back in 1986 in Calgary Alberta, a friend Bud Johnson and I constructed the first test disc generator model using alnico magnets, fig. 4, 4a, and later ceramic magnets were installed shown in fig. 4b. Months later I designed and began construction of another larger Interference Disc machine with horseshoe shape neodymium 35 grade magnets mounted on the outside, and with the N and S magnetic poles facing toward the coils in the center portion of the machine. The coils and magnets in this larger machine are mounted in reverse of the first Interference Disc generator, fig. 5, 6.

Fig. 4 Fig. 4a Fig. 4b

The Interference Disc electrical generator is made of a stator (114) consisting of an array of even number parallel mounted bar magnets (112) arranged and supported (114) in a circular fashion equidistant from each other, where the polarity of the magnets (112) are alternating when viewed at either end. Fig. 8

Also in the stator fig. 9, (102) there are twice the number of coils (111) as bar magnets (112) wound in pairs on U-shaped cores (110). One half of the coil pairs mounted at one end of the bar magnets (112) in the same circular fashion, each corresponding to and aligned opposite to a pair of bar magnets (112) and separated from it by an air gap. On the other end of this pair of bar magnets (112) there are another set of coils (111) aligned likewise.

*The rotor is made of two magnetically susceptible circular plates (109A or 109B) (such as iron or steel) Fig. 10, centrally mounted on an axle (107) fig. 8, which is in respect to the array of magnets and coils Fig. 10a.

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Fig. 10a

The interference discs (109A or 109B) are separated from each other such that they can rotate in the air gaps between the magnets (112) and the coils (111). The interference discs (109A or 109B) have a number of equidistant opening, either more or less in number than the number of the bar magnets (112).

The arrangement and size of the openings are such that when the discs (109A or 109B) are rotated by an outside motive force, they open the magnetic field between adjacent bar magnets (112), and the opposing coils (111) at both ends of the stator (114) simultaneously. Hence; inducing an alternating electric current in the stationary coils (111) fig. 11.

By opening and closing the magnetic influx to the core (110) of the coils (111), an alternating current will be generated in the coils (111) in a retro-order to the rotational direction of the interference discs (109A or 109B). Depending on the number of magnet-coil assemblies three phase AC current can be obtained. The regulation and attenuation of these currents can be achieved by known electric engineering methods.

OPTION I AND OPTION II ASSEMBLIES.

A variation of this option I or option II generator has been constructed by mounting two sets of magnets (113) of the stator (115) on magnetically susceptible rings (119) such as soft iron. The polarity of the neighboring magnets (113) are alternating N, S, N, S, etc. Fig. 12.

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Adjacent to one ring of the magnets and separated by an air gap are parallel mounted induction coils (111A) corresponding to and aligned with the magnets (113). On the other end of the coils, (111A) are an identical set of magnets (113) arranged in the same manner as the first set, but the polarity is reversed in respect to the coil (111A)

Thus if on one of the end plates (123) the magnetic pole facing the coil (111A) is the (N) pole than on the opposite end plate (123A) the (S) pole will face the coil (111A) Fig. 13.

The rotor (109A or 109B) and it’s configuration is the same as in the first variant (see*), and the induction of AC current, occurring in the same manner and in the same order as described before. This assembly can be constructed in any practical multiple units of the above (123A).

Fig. 13

Some of the unique characteristics of this design are:

1) Non rotating magnets.
2) Non rotating coils.
3) No need for brushes or commutator.
4) Less rotating mass due to the field coils and magnetic alloys being stationary
5) No back emf is noted upon the spinning balanced interference disc while the coils are loaded.

Referring to the drawings provided, one interference disc has 11 fins and the other has 10 fins on the disc fig. 10, 14.

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soft iron as the core material have shown less heat and higher efficiency with less hysteresis losses, and larger electrical output.

The characteristics of using the 10 or 11 finned disc to magnetically balance the rotor has the same effect of reducing start up torque regardless of the type of magnetic material used. However, the choice of metals and or alloys will alter the magnetic shielding effect due to their ability to block magnetic fields. Compared to other magnets, the use of rare earth neodymium magnets produces more wattage output, and increased stress upon the interference discs due to the stronger magnetic fields.

High permeability and high strength steel should be the metal of choice for constructing the discs for durability and closer tolerances for a smaller air gap. Amorphous metglass shielding material will give you the best results for this application but with increased cost.

Another set of interference discs will be constructed with increased strength for this shielding application, while using rare earth neodymium magnets in the machine. Using very strong non-bending magnetic shielding alloy steel to reduce the warp in the interference discs will allow for a smaller air gap to be maintained between the magnets and the coils. Another set discs can be constructed of multiple layers of metglass shielding material (laminated amorphous alloys) pressed together with very strong epoxy resins. Using amorphous alloys in the interference discs will produce superior magnetic shielding with almost zero hysteresis losses. Flanges need to be constructed to support the discs to eliminate the warping while being small enough to fit the design. With these and other improvements in the machine, the results will be an increase in electrical output and improved efficiency.

Some of the early coils were wound with 14 gauge magnet wire with 100 to 250 turns of magnet wire. I wound 4 coils with 250 turns of wire, and another four coils with 100 turns, and the other 4 were used for experimenting with other combinations. There are 12 coils total mounted in the earlier aluminum machine and 6 larger (letter I shape) coils in the larger more refined phanolic machine, the frequency of the coils is determined by the rpm of the balanced disc rotors. The machine will house up to 6 letter I coils for the larger machine, and are designed to output 300 watts each in any volt or amps depending on the number and wire size of coil windings.

The efficiency of the unit would vary greatly depending on the speed of rotation, the width of the air gap, the strength of the magnets, and the materials used to construct the coils. I used nickel base amorphous metglass in the coils in both the smaller and larger machines, which as a result, shows greater efficiency as compared to conventional core laminates. Less energy is needed to spin the balanced disc rotor while causing a larger moving magnetic field to cause induction in the stationary coils. With this effect, it is easy to visualize the advantages this design has over conventional generators and motors. New testing of the coils will be conducted after the machine goes through all the upgrades to eliminate the problems with the warping interference discs.

The Interference Discs Generator described in this document has the potential to produce more than unity effects by easy turning of a magnetically balanced (non-warping) interference disc. Optimizing the device with closer tolerances and correctly selected materials and incorporating internal magnetic balancing, will add to the success and improved performance of this unique generator design.

Improvements can be made with this design while the operating principal remains the same. Looking at the photographs included you will see the 1^st proof of concept generator frame is constructed mainly from aluminum, this metal was used only because it was inexpensive material and easy to work with fig. 15. Non magnetic and non-conductive materials should be used to construct the generator frame supports to eliminate the eddy current losses. All of the nuts and bolts used to hold the disc generators together worked well for making the test machines capable to have adjustable air gaps, however, they can all be eliminated with design changes that presets the gaps and tolerances to optimized the conditions of the interference disc effect.

Many improvements were adopted in the next larger #2 version of the Interference Disc generator fig. 16. Phanolic material (non conductive and non magnetic) were used in the frame supporting the magnets and the coils, thus eliminating eddy current losses within the frame support. Large aluminum E bars were used to support the magnet frame support and the coil frame support with no noticeable eddy current losses. The aluminum used is positioned further away from the coils and magnets in the larger generator so as not to be affected by the magnets. Larger more powerful neodymium magnets and I shaped transformer coils were installed and tested in the larger machine which showed an increase in output power over the 1st machine fig. 17. Using more powerful neodymium magnets in this larger disc machine created some problems with the interference discs. Not only did they warp the discs they caused them to vibrate and chatter causing the fins to hit the magnets and the coils. I increased the air gap to over half an inch and moved the disc further away from the magnets to prevent damage. The effect was a reduction of magnetic flux reaching the coils that reduced the power output. The discs must be constructed much stronger and rigid if using neodymium magnet grade 35 or greater, then the air gap can be closed so more magnetic flux will reach the coils allowing for a greater electrical output.

The wiring of the coils circuit can be constructed by known engineering methods to achieve AC or DC power, and like any conventional transformer, wind the coils with heavy wire for more amps and more turns for more volts. The coils are stationary in this machine which makes it easy to harness AC power directly from the coils without brushes. All coils that are in phase can be wired in series or parallel, the number of the blocking plates on the interference disc determines the phasing of the coils.

The diagram in fig. 18, 18a shows the path of the magnetic flux movement in relation to the position of the blocking plates of the interference disc. The magnetic field in the core/coil is switching polarity as the interference disc fins alternately moves in and out of the air gaps on each side of the coil. As you can see, depending on the position of the disc, positive and negative induction takes place for AC output of the coils. John Ecklin has achieved this effect using rotating blocking plates. I have achieved the same effect using balanced rotating interference discs with multiple stacks of isolated coils and poles mounted in a circle equal distance from each other.

Fig. 18 Fig.18a

Nickel iron base metglass amorphous cores are shown (minus coil winding) for the larger Interference disc generator fig. 19. A side view and layout of the inner coil phanolic mounting plate is shown in fig. 20. The black holes noted in this drawing show how one disc with twelve holes looks in relation to the side view of the coil mounting plate, the eleven red holes show how another finned or holed disc looks in relation to the twelve disc, both are overlapped.

Fig. 19

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For the earlier larger disc machine, I designed and ordered neodymium grade 35 magnet corner pieces first machined to size and then magnetized fig. 19a. These magnetic corner pieces turns the flux around the 90 degree corner of the horse shoe magnet to face the coils with minimal flux leakage, while allowing for the increase of magnetic material for the maximum amount of flux reaching the coil. However, because of the direction of magnetization in the corner pieces with this earlier magnet design, there is north, and south pole flux leakage from the two 3/8” portions of the corners of the magnet pieces fig. C. Using more powerful neodymium grade 45 magnet material, and with the redesign of the corner portion of the magnet piece, the new horseshoe shape magnet is much stronger than the earlier one. I redesigned the corner pieces to eliminate all flux leakage using wedge shape keepers, which will focus all flux from the poles to the coils. Twelve new horseshoe shape neodymium grade 45 magnets will be installed with new disc and tested in the upgraded machine.

Another drawing of the early aluminum machine is shown in fig. 21.

Included is a list of the parts and materials I used to construct the first test Interference disc generator fig. 22. The whole idea with this interference disc concept is to move a larger amount of magnetic flux with smaller amount of energy. In this case, the balanced rotating interference disc becomes the part of lesser energy input, as compared to rotating magnets and or coils in another system.

I would also like to make note my reproduction of Gary W. Wesley’s permanent magnet motor. During my testing of the machine I constructed shown in fig. 23, 23a, I found the neutral zone effect to be valid. This neutral zone effect was combined with magnetic balancing using springs and has made the blocking plate rocker assembly very easy to move in and out of the stationary magnet. The smaller mass primary starting force is able to move a larger mass secondary force, that being the mass of the rocker assembly, the blocking plate, and activation trigger arm that throws the system unbalanced.

The effect I reproduced with Gary Wesley’s permanent magnet motor are related to the Interference Disc generator in the fact that blocking plates are used to shield the magnetic field, only we differ on methods to balance the blocking shields. Gary Wesley used springs to carefully balance the blocking plate, and I used a different number of interference fins working with the magnets to balance the blocking plates. The magnets in my Interference Disc machine become the springs.

More photos of both Interference Disc machines are shown in fig. 24, 24a, 24b.

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Page posted by Sterling D. Allan, August 12, 2003
Last updated August 12, 2003