Generator with falling stator

• US 8,324,748 B2
• Filed: 08/25/2011
• Issued: 12/04/2012
• Est. Priority Date: 05/07/2009
• Status: Expired due to Fees

• Current Assignee: James D. Thackston
• Original Assignee: James D. Thackston
• Inventors: Thackston, James D.
• Primary Examiner(s): Ponomarenko, Nicholas
• Application Number:
  US13/218,083
• Publication Number:
  US 20110309619A1
• Time in Patent Office: 467 Days
• Field of Search: 290/43, 290/54, 290/42, 290/53, 310/12
• US Class Current: 290/43
• CPC Class Codes: F03B 13/264 using the horizontal flow of water resulting from tide movement
• CPC Class Codes: H02K 13/003 Structural associations of slip-rings
• CPC Class Codes: H02K 16/005 Machines with only rotors, e.g. counter-rotating rotors DC commutator machines or universal AC/DC commutator motors having a rotating armature and a rotating excitation field H02K23/60
• CPC Class Codes: H02K 35/00 Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit arrangements for handling mechanical energy structurally associated with generators H02K7/00, e.g. H02K7/06
• CPC Class Codes: H02K 7/083 radially supporting the rotary shaft at both ends of the rotor H02K7/086, H02K7/09 take precedence
• CPC Class Codes: H02K 7/1823 structurally associated with turbines or similar engines
• CPC Class Codes: H02K 7/1892 Generators with parts oscillating or vibrating about an axis
• CPC Class Codes: H02K 7/20 Structural association with auxiliary dynamo-electric machines, e.g. with electric starter motors or exciters
• CPC Class Codes: Y02E 10/20 Hydro energy
• CPC Class Codes: Y02E 10/30 Energy from the sea, e.g. using wave energy or salinity gradient

Abstract

A generator is provided including a rotatable pressure vessel with an inner and outer surface. Electromagnets are disposed on the inner surface of the pressure vessel. A biasing structure is configured to rotate within, and independently of, the pressure vessel and extends at least partly along a lengthwise dimension of the pressure vessel. The biasing structure has an axis of rotation that is within the circumference of the pressure vessel, and may be substantially parallel and coincident with a center axis of the pressure vessel. The biasing structure has a center of gravity at a radius away from the center axis of the pressure vessel. Armature coils are disposed on an outer portion of the biasing structure, and are positioned such that a relative motion between the electromagnets and the plurality of armature coils induces a current in the armature coils when a current is applied to the electromagnets. A transfer mechanism is configured to transfer electrical current from first electrical conductors connected to the armature windings to an outside of the pressure vessel.

Claims

1. A generator comprising:

a rotatable cylindrical pressure vessel, said pressure vessel having an inner and outer surface;

a plurality of magnets disposed on said inner surface of said pressure vessel;

a biasing structure configured to rotate within, and independently of, said pressure vessel and extending at least partly along a lengthwise dimension of said pressure vessel, said biasing structure having an axis of rotation that is substantially parallel and coincident with a center axis of said pressure vessel, and a center of gravity of said biasing structure at a radius away from said center axis of said pressure vessel;

a plurality of armature coils disposed on an outer portion of said biasing structure, said plurality of armature coils positioned such that a relative motion between said magnets and said plurality of armature coils induces a current in said armature coils;

a control mechanism configured to control an operating angle of said biasing structure; and

a transfer mechanism configured to transfer electrical current from first electrical conductors connected to said armature windings to an outside of said pressure vessel.

2. The generator of claim 1, wherein said plurality of magnets are electromagnets.

3. A generator comprising:

a rotatable pressure vessel, said pressure vessel having an inner and outer surface;

a plurality of first magnets disposed on said inner surface of said pressure vessel;

a biasing structure extending at least partly along a lengthwise dimension of said pressure vessel, said biasing structure having an axis of rotation that is within a circumference of said pressure vessel, a center of gravity of said biasing structure at a radius away from a center axis of said pressure vessel;

a control system configured to control an operating angle of said biasing structure; and

an armature coil disposed on said biasing structure and positioned such that relative motion between said first magnets and said armature coil induces a current in said armature coil.

4. The generator of claim 3, wherein said axis of rotation of said biasing structure is located substantially coincident with said center axis of said pressure vessel.

5. The generator of claim 3, wherein said biasing structure further comprises a rotatable shaft configured to rotate independently of said pressure vessel, said shaft parallel to and coincident with said center axis of said pressure vessel.

6. The generator of claim 3, wherein said first magnets are electromagnets and said relative motion between said first magnets and said armature coil induces a current in said armature coil when current is applied to said first magnets.

7. The generator of claim 3, wherein said pressure vessel has no openings penetrating said inner surface and said outer surface through which mechanical energy is transmitted.

8. The generator of claim 3, wherein said first magnets are electromagnets, and said control system is connected to said first magnets, said control system being further configured to selectively apply current to said first magnets during rotation of said pressure vessel.

9. The generator of claim 8, wherein said control system is configured to stop supplying current to selected first magnets of said plurality of first magnets based on at least one of:

when said selected first magnets are outside of an effective range with respect to said armature coils; and

a position of said selected first magnets with respect to said biasing structure.

10. The generator of claim 5, wherein said shaft has a hollow interior and first electrical conductors located in said hollow interior of said shaft, said first electrical conductors connected to said armature windings.

11. The generator of claim 3, further comprising:

a transfer mechanism configured to transfer electrical current from first electrical conductors connected to said armature windings to an outside of said pressure vessel.

12. The generator of claim 11, further comprising:

second electrical conductors completing an electrical circuit between said transfer mechanism and windings of said first magnets.

13. The generator of claim 3, further comprising:

a thermally conducting fluid filling an interior of said pressure vessel.

14. The generator of claim 3, wherein said first magnets are electromagnets, the generator further comprising:

a starter mechanism comprising;

a rotor having permanent magnets disposed around said rotor;

starter armature coils disposed opposite said permanent magnets; and

third electrical conductors completing an electrical circuit between said starter armature coils and said first magnets,

wherein said permanent magnets and said starter armature coils are positioned opposite to one another at a distance such that relative rotation between said permanent magnets and said starter armature coils produces a current in said starter armature coils.

15. The generator of claim 14, wherein said electrical circuit between said starter armature coils and said first magnets comprises a rectifier between said starter armature coils and said first magnets.

16. The generator of claim 3, wherein said biasing structure is configured to maintain an operational rotational orientation using a gravitational force to offset a rotational force created by an electro-magnetic interaction of said first magnets and said armature coil.

17. The generator of claim 3, wherein said biasing structure is configured such that a gravitational force acting on said biasing structure contributes to a relative rotation between said biasing structure and said pressure vessel when said pressure vessel is rotating.

18. The generator of claim 3, wherein at least some of said plurality of first magnets are electromagnets and are configured to be powered, at least temporarily, by a current delivered from outside said pressure vessel through a transfer mechanism.

19. A method of generating electricity with a generator including a pressurized rotatable pressure vessel and a biasing structure that is within the pressure vessel and extends at least partly along a lengthwise dimension of the pressure vessel, the method comprising:

at least partially submerging the generator underwater;

allowing the pressure vessel to rotate relative to the biasing structure;

providing a current to electromagnets disposed within the pressure vessel;

controlling an operating angle of the biasing structure, and

generating electricity via relative movement of the pressure vessel and the biasing structure,

wherein, the pressure vessel rotates about an axis, and a center of gravity of the biasing structure is located at a distance away from the axis.

20. The method of claim 19, wherein said providing a current to electromagnets disposed within the pressure vessel includes providing an initial current at least partly from a power source that is external to the pressure vessel, and providing an operating current at least partly from a power source that is internal to the pressure vessel.

21. The method of claim 19, further comprising:

generating an initial current via permanent magnets disposed within the pressure vessel, and

providing the initial current to the electromagnets.