US 7,425,772 B2 · Electric power generating system using ring-shaped generators

Abstract

Electric power generator system using ring-shaped generators and essentially being formed of turbines and generators, and optionally converging-diverging nozzles. The turbines may optionally have an open center, and may be of any type, such as axial turbines, reel-shaped turbines, cycloidal turbines optionally with an annulus, helix shaped turbines, etc. In addition, the blades of the turbines may or not be curved and/or articulated. The generators can be of permanent magnets or variable reluctance, non-watertight and optionally independent. The exciter can be made of a ring (of magnets, or of areas having alternately high and low magnetic permeability) around the blades, and the armature (magnets with windings, or coils with a high-permeability core, depending on the case) forming an arc or ring fitted in the housing or the nozzle and/or the stationary inner cylinder or ring (or braced ring system) in the case of open-center turbines.

Claims16

Dependent claims

Electric power generating system using ring-shaped generators, which comprises:

at least one stator formed of, at least one ring sector (8, 16) that has first stator elements (100) fixed to it, each stator element (100) comprising:
one piece of high magnetic permeability formed, at least partially, by at least one magnet;
a winding (2) around the piece of high magnetic permeability;
an air gap (52) formed in the piece of high magnetic permeability;
at least one rotor (14) formed by at least one ring sector attached to a turbine, a ring sector to which is fixed at least one portion of high magnetic permeability (5) arranged alternately with at least one portion of low magnetic permeability (4);
wherein the rotation of the rotor (14) causes the portions of high (5) and low (4) magnetic permeability of the rotor to alternately pass the air gap (52) of each element of the stator (100), causing a variation of reluctance in the magnetic circuit formed by each stator element (100), and the portions of high (5) and low (4) magnetic permeability of the rotor (14), and inducing an e.m.f. in each one of the windings (2) of the stator elements (100).

3 more elements

Dependencies are inferred from the claim text.

Electric power generating system using ring-shaped generators

Life of this patent

Electric power generating system using ring-shaped generators

Life of this patent

Abstract

Claims16