WIND TURBINE WITH COMPENSATED MOTOR TORQUE

• US 20120133148A1
• Filed: 06/30/2009
• Published: 05/31/2012
• Est. Priority Date: 06/30/2009
• Status: Active Grant

• Current Assignee: Tempero 2000 SL
• Original Assignee: Tempero 2000 SL
• Inventors: Romeo, Manuel Lahuerta
• Granted Patent: US 8,841,794 B2
• Time in Patent Office: Days
• US Class Current: 290/55
• CPC Class Codes: F03D 1/0608 characterised by their aerodynamic shape
• CPC Class Codes: F03D 15/00 Transmission of mechanical power
• CPC Class Codes: F03D 15/10 using gearing not limited to rotary motion, e.g. with oscillating or reciprocating members
• CPC Class Codes: F03D 7/02 the wind motors having rotation axis substantially parallel to the air flow entering the rotor
• CPC Class Codes: F03D 80/70 Bearing or lubricating arrangements
• CPC Class Codes: F05B 2260/421 in the form of rotational kinetic energy, e.g. in flywheels
• CPC Class Codes: F05B 2270/1014 to keep rotational speed constant
• CPC Class Codes: F05B 2270/1095 by limiting mechanical stresses
• CPC Class Codes: F05B 2270/402 passive or reactive, e.g. using large wind vanes
• CPC Class Codes: F05B 2270/508 mechanical means, e.g. levers, gears or cams
• CPC Class Codes: Y02E 10/72 Wind turbines with rotation axis in wind direction

Abstract

COMPENSATED MOTOR TORQUE WIND TURBINE, constituted by a single blade (12) rotor (1) attached to a low speed shaft (3) with spindle (2) sustained in a nacelle (9), on gear bearing (7), at the end of the tower (8), being the power train elements: multiplier (5), generator (6) and brake (13) suspended from the nacelle (9) through a first bearing (4) aligned with the low speed shaft (3), forming a pendulum set (28) that allows them to rotate, compensating in its angular motion the rotor (1) torque, said pendulum set (28) accumulates potential energy when rising in its angular motion and releases it when the gust stops by descending and turning in the opposite direction of the rotation of the turbine'"'"'s rotor (1) restituting turns to the generator'"'"'s (6) rotor, being this effect a power regulator.

Claims

1. Wind turbine with compensated motor torque, of the type constituted by a single bladed rotor (1) having a single blade (12) attached to a low speed shaft (3) that goes through a spindle (2) held from a nacelle (9), arranged on a gear bearing (7) placed on the top of the tower (8), attached by means of the corresponding shoe, characterized in that it has the elements that form the power train, that is, the multiplier (5), the generator (6), and the brake disc (13) suspended from the nacelle (9) through a first bearing (4) aligned with the rotor (1) shaft (3) forming a pendulum set (28) that allows them to rotate, compensating, in its angular motion, the torque of the rotor (1) until balancing it avoiding said torque to be transferred to the nacelle (9), the tower (8) and the shoe;

in that said pendulum set (28) accumulates potential energy when rising in its angular motion and it releases it when the gust stops and descends rotating in opposite direction of the turbine'"'"'s rotor (1) rotation, restituting turns to the generator'"'"'s rotor (6), being this effect a power regulator that will tend to uniform the amount of energy in the grid, smoothing the peaks and valleys through passive mechanical means.

2. The wind turbine with compensated motor according to claim 1, characterized in that the structure and configuration of the pendulum set (28) is such that the inertia of the rotating parts of the components that form the power train are higher than the inertia of the masses of the pendulum set itself (28).

3. The wind turbine with compensated motor according to claim 1, characterized in that the multiplier (5) is made of parallel shafts of extra long execution, formed by two or more multiplying stages, wherein the slow stage is of epicyclical design with three or more satellites, suited to transmit the torque and the fast stage is a chain transmission suited to achieve the extra long execution and because on its high speed shaft (29) there is a flywheel (11) which gives speed stability and increases the inertia of the rotating parts, so that in the event of a disturbance of the torque, this affects the pendulum set (28) without perturbing the speed uniformity of the generator (6) shaft.

4. The wind turbine with compensated motor according to claim 1, characterized in that the rotor (1) is a single bladed oscillating rotor cushioned by elastomers (10), placed between fork (16) and joint (19), with dihedron of 155°

in nominal conditions when being in dynamic balance, on the one hand, the stabilizing moment created by the dealignment of the blade (12) and counterweight (18) masses, and on the other hand, the destabilizing moment created by the resultant of the wind axial thrust.

5. The wind turbine with compensated motor according to claim 1, characterized in that to control the pass of the propeller there is a mechanism of crown and worm screw integrated in the joint (19), in which the crown constitutes the mobile ring (21) of a double ball bearing, carved in its central part, and the worm screw (20) is integrated in the exterior ring, fixed, of the bearing forming the joint (19);

on the mobile ring (21) the hub (17) of the rotor (1) is flanged.

6. The wind turbine with compensated motor according to claim 1, characterized in that the nacelle (9) is of an elliptical section formed by two halves welded in a lentil shape in which interior, the hydraulic components, control cabinets and gear motors are housed;

and from the nacelle (9) and forming part of itself, a crank arm (15), that holds the spindle (2), the rotor (1) and the pendulum set (28), is placed to leeward.

7. The wind turbine with compensated motor according to claim 1, characterized in that the arrangement of the elements that form the power train (multiplier (5), generator (6) and flywheel (11)) suspended from the nacelle (9) through a bearing (4) aligned with the rotor (1) shaft (3) so that they can balance, compensating, in its angular motion, the rotor (1) until balancing it, is applicable to other single propeller motor machines such as ships or aircrafts, wherein the generator (6) is substituted by an engine and the chassis is substituted by a spindle or similar.

8. The wind turbine with compensated motor according to claim 1, characterized in that in an embodiment with a greater uniformity and quality in the energy supply, a hydrostatic transmission is inserted between the multiplier (5) and the generator (6), so that the generator (6) in a through shaft version, is located attached to a second flywheel (22) both located at the base of the tower (8), being activated by an oil hydraulic servomotor (23) of variable cylinder through a hydraulic coupler (24);

said set forms a stabilization kit; and

on the multiplier (5) an oil hydraulic central (25) is mounted forming part of the pendulum set (28) in place of the generator (6) which is placed at the base of the tower.

9. The wind turbine with compensated motor according to claim 8 characterized in that when applied to eolic pumping or inverse osmosis desalination, inside the stabilization kit, the generator (6) will be substituted by a through shaft pump (27) which provides a more stable energized flow;

and because in case of well pumping, the pump (27) would go submerged in depth and its shaft operated through a cardan transmission from the second the flywheel (22).