CA2798560A1 - The brushless permanent magnet direct current electricity generator - Google Patents

Abstract

This invention provides the mechanical means to generate true Direct Current electricity in a smooth and continuous fashion, without requiring the use of, Commutators and Brushes or Rectifier Circuits to convert Alternating Current into Direct Current.

Description

1 The Brushless Permanent Magnet Direct Current Electricity 2 Generator 4 Description 6 Background 8 All practical Direct Current generators or DC generators today are actually Alternating Current 9 generator or AC generators that use either Commutators and Brushes or Rectifier Circuits to change AC into DC. In most applications where Direct Current is produced and used, it is 11 counterproductive to generate Alternating Current first and then convert it to Direct Current but 12 until this invention was created, there was no known, practical, mechanical means or method to 13 generate Direct Current on its own.

Alternating current and its production produce both electromagnetic and audible noise, both of 16 which are undesirable side effects. Because the original alternating current by definition fluctuates, 17 so does the resulting direct current. This fluctuation is an undesirable characteristic as well and 18 various methods such as Multiple Phases are employed to try and mitigate this effect.

The use of Commutators and Brushes or Rectifier Circuits and the use of multiple phases all add 21 needless complexity and extra components and results in efficiency losses.

23 This invention eliminates all of the above mentioned undesirable effects by generating Direct 24 Current to begin with, with no Alternating Current background noise and eliminates all of the technology associated with conversion of AC into DC.

27 No previous art has been found for a Direct Current Generator as described in the above Abstract.

32 Summary of the invention 34 This invention uses the well established principle of passing a magnetic field across an electrical 35 conductor to stimulate the flow of electricity.

37 In the drawings, which form a part of this specification, 39 Figure 1 is a plan and side view, of the Stator Armature;
40 Figure 2 is a plan and side view, of the Primary Field Magnet and Rotor;
41 Figure 3 is a plan and side view, of the Secondary Field Magnet and Rotor; and 42 Figure 4 is a half plan view and the related Cross Sectional view of the assembly of the above three 43 parts.

45 The armature of this generator as shown in Figure 1, takes the general shape of a wheel with radial 46 spokes. The radial spokes 1 are constructed using electrical conductors e.g. copper wires, inside of 47 which electrons can become excited by a moving magnetic field to produce an electric current. The 48 outer hub 2 and inner hub 3 are also electrical conductors which are physically connected e.g.
49 soldered to the spokes at the ends, and act as an electrical bus to provide the entrance and exit for 50 the electric current. Wire leads 4 and 7 provide the connection between the hubs 2 and 3, and the 51 external load to be powered by this generator. Wire lead 4, which will pass though the magnetic 52 field is magnetically shielded by the metallic wrap 6, and electrically insulate from the magnetic 53 shielding of metallic wrap 6 by the wire insulation 5.

55 The armature described above and in Figure 1 is a simplified representation required to show 56 clarity. In the practical application, this armature will most likely take the shape of a flattened, 57 helically wound, toroidal coil, wound around a thin, flat, doughnut shaped, nonconductive disk.
58 Electrically conductive busses would be soldered to, or physically connected to, the inner and outer 59 edges of the flattened coil, to form the inner and outer hubs described above.
61 The Primary Field Magnet shown in Figure 2 is a permanent magnet 8 solidly mounted on and fixed 62 to, a rotating disk or rotor 10 with the magnetic field 12 aligned normal to the flat plain of the disk 63 and parallel to the axis of rotation which passes through the center of the drive shaft hole 9. The 64 field magnet takes the shape of a flattened ring or flattened dough nut and may be either a single 65 one piece magnet or comprised of multiple circular ring segments placed in intimate contact with 66 each other so no spaces exist between them, with all their individual magnetic fields oriented in the 67 same direction.
68 The Secondary Field Magnet shown in Figure 3 is identical to the Primary Field Magnet in every 69 way except, that the magnetic field 12 is oriented in the diametrically opposite direction, so that 70 when mounted face-to-face on their common drive shaft, their combined magnetic fields will be 71 aligned with each other and the two rotors will be pulled toward each other by the magnetic 72 attraction of their respective field magnets.
73 Figure 4 shows a Half Plan View and Cross Sectional View of the assembled invention. The 74 armature 16 is the Stator of this generator and is solidly fixed and located and is positioned 75 coaxially and between the two rotors 17 and their respective permanent magnets 13 and 14, with 76 sufficient space between the Stator and the magnets to avoid any physical contact between them as 77 the rotors and magnets are rotated by their common drive shaft 15 to which both rotors are solidly 78 attached. The inner and outer diameter of the magnets 13 and 14 and the length of the spokes 1 79 should be chosen to ensure that the hubs 2 and 3 lie outside of and not between the two magnets.
81 As the rotors 17 and magnets 13 and 14 are rotated by the drive shaft 15, the accompanying rotating 82 magnetic field 12 excites the electrons in all the spokes 1 simultaneously and current is induced in 83 all the spokes simultaneously and this current will then flow through the spokes 1 from one hub to 84 the other as long as an external load or path is made available between the wire leads 4 and 7. The direction of current flow through the spokes 1 between the hubs and through the load is determined 86 by the direction of rotation of the drive shaft.

Claims (6)

1 A mechanical device that generates direct electric current without the need to first generate alternating electric current and then convert alternating to direct current, said device to be constructed with a stationary armature as the stator and a rotating field magnet or magnets mounted on an associated rotating disc or discs.

2 The mechanical device recited in claim 1 wherein the rotating field magnets are shaped in the form of a ring with an inner and outer diameter.

3 The magnets recited in claim 2 wherein they are centered and solidly mounted and fixed to the face of a rotating disc the flat plain of which is aligned perpendicular to its centered axis of rotation.

4 The magnets recited in claim 2 wherein those magnets are constructed either as one piece or as an assembly of ring segments placed in intimate contact with each other with no gaps between segments and all the individual magnetic fields of all the magnets aligned parallel to each other and in the same direction.
The magnets recited in claim 2 wherein their magnetic fields are aligned parallel to their axis of rotation.
6 The mechanical device recited in claim 1 wherein it may be constructed using either one or two ring magnets with their attached rotating discs.
7 The mechanical device recited in claim 1 wherein the rotating disc or discs are rigidly connected to a center driving shaft.

8 The mechanical device recited in claim 1 wherein the stator armature is constructed of an electrically conductive material in the form of wires with a central hub or electrical bus in the shape of a planar ring the plane of which is positioned concentric to and perpendicular to the axis of rotation of the drive shaft, said hub to have a radius sufficient to allow the free rotation of the drive shaft without contact between the drive shaft and hub.
9 The stator armature recited in claim 8 wherein a plurality of conductors radiate outward from and in the plane of the central hub, said conductors to be physically connected to the central hub in such a way as to permit the passage of electric current between the central hub and the radial conductors.
The stator armature recited in claim 9 wherein the outer ends of the radial conductor are connected together to form an outer hub or electrical bus and said conductors to be physically connected to the outer hub in such a way as to permit the passage of electric current between the outer hub and the radial conductors.
11 The stator armature recited in claim 10 wherein the outer hub is physically connected to an electrical load conductor in such a way as to allow electric current to flow between the outer hub and an external electrical load.
12 The stator armature recited in claim 11 wherein the central hub is physically connected to an electrical load conductor in such a way as to allow electric current to flow between the central hub and an external electrical load 13 The mechanical device recited in claim 1 wherein the stator armature is position concentric to the drive shaft, on a plane adjacent to and parallel to the plane of the exposed face of the field ring magnet with sufficient space between the armature and the ring magnet's face to avoid any physical contact between the magnet and the armature.
14 The mechanical device recited in claim 1 wherein two field ring magnets are used, the stator armature is positioned between the exposed faces of the two ring magnets with

5 sufficient space between the magnets faces and the armature to avoid any physical contact between the magnets and the armature.
15 The mechanical device recited in claim 14 wherein the magnetic field of the two magnetic rings are aligned so that the two rings are magnetically attracted to each other and the direction of the magnetic field is parallel to the axis of rotation of the drive shaft.
16 The mechanical device recited in claims 13 and 14 wherein the radial conductor elements of the armature lie within the region between the two magnet faces.

6