A control system for controlling the electrical load of the electric generator can be provided that is arranged to adapt the rotational speed between the first and the second parts of the electric generator. When the surface rises and thereby lifts the buoy, a motive force is created which is converted to a rotational movement by a driving bar connected between the foundation and the buoy or by a wire or chain which runs over an anchor wheel journalled for rotating at the buoy or in the foundation and which is at an opposite end connected to the foundation or the buoy, respectively. However, this is not optimal for coupling a conventional generator to the anchor wheel to produce electric energy.
- Pies de gato
- Algunos implantes cocleares (del oído)
- Chirurgia maxillo facciale
- Hielo tres o cuatro veces por día
This principle of controlling of the span of the counterweight is self-controlling and hence does not have to be controlled by a control system such as in the other methods, but lacks the ability to compensate for variations in the g-force of the counterweight or the force with which the counterweight acts on the power train, i.e.
Tipos De Dolor Pdf
The first, second and third rotational parts can also be arranged to rotate around the same geometric rotational axis, i.e. For direct driven operation, i.e. The air pump can be driven by the link shaft 58, e.g. 7 d. In this variant the driveshaft 11 is driven by a weight or load 211, which is suspended beneath the buoy 3 in elastic means 213 that for example can include sets of helical springs or of air springs.
Then, the buoy must be given a weight that is greater than that of the counterweight 19 and be given a sufficient volume/buoyancy, so that it still is capable of floating at the water surface 6. This is shown in FIG. It is also possible to keep the counterweight above the water surface 6, this giving a higher motive force in relation to the mass of the counterweight. The control system uses the torque value to compensate for the g-force of the counterweight 19, which varies due to the inertia and influence from the acceleration force of the counterweight and influence from the water resistance that appears due to the movements of the buoy 3 in combination with variations of the rotation speed of the driveshaft 11. During a wave trough, the counterweight 19 is accelerated in a direction away from the gravitational direction, this giving an increased g-force, and during a wave crest the counterweight is accelerated in a direction back to the gravitational direction, this giving a lower g-force.
Furthermore, in the case including a counterweight and a counterweight drum, an electric cable for the electric connection of the generator can be provided which extends from the generator to the counterweight drum and is partly wound around it, which therefrom extends to a non floatable part which is slidable along the first elongated means and to which it is rigidly connected, so that the sliding part can be maintained at a constant distance beneath the counterweight, and which electric cable extends from the slidable part up to the water surface to be further connected to an electric load. 3. Absorption of energy from the water waves can be limited while full power can be maintained even during very heavy wave conditions. Pilates para dolor lumbar . When the counterweight 19 reaches a certain velocity, the pulling force from the counterweight becomes equal to the counteracting force in the generator, this resulting in the fact that the rotation speed of the generator and the power output from the generator are stabilized in an equilibrium state.
The rotation speed and the power output from the generator vary according to the movements of the waves. In this case where the driveshaft is connected to an input side of the mechanical gear, the first part of the electric generator is coupled to a first output side of the mechanical gear, the second part of the electric generator is rigidly attached to the buoy or the other device and the counterweight drum is mechanically coupled to a second output side different from the first output side of the mechanical gear.
2 a and 2 b the buoy 3 and the bottom foundation-alternatively the bottom fastening device-are connected to each other by an anchor line 7, e.g. Such an embodiment can e.g. As mentioned above, it can be utilized, so that the planetary gear 35 and the generator 21 e.g. 12. The wave power plant can easily be designed to be suited for different installation depths. An alternative embodiment of a wave power plant 1 having a power train 215 according to FIG. Helicoidal grooves according to 39, 41, 43 and 45 having a shape that follows the profile of the lines can also significantly increase the life-time of the lines due to the fact that the contact surface between line and respective winding drum is increased. Otherwise the centre of gravity in the wave power plant 1 can be displaced, so that the energy plant can turn in an inappropriate manner against the waves having as a consequence a deteriorated capture ratio between the waves and the buoy 3. The link shaft 58 is in the embodiment shown also used for achieving reverse feeding from the counterweight drums 15 to the anchor drum 9. Therefor, it also has a gearwheel 27 cooperating with a gear ring on one flange 33 of the anchor drum in a way similar to the mechanism for reverse feeding shown in FIG.
The driveshaft is in this manner fed forward by the anchor drum in the same rotation direction every time the wave rises, thereby rectifying the motive force absorbed from the wave movements. BACKGROUND Wave power has a large potential of becoming cost efficient since the energy density in ocean waves is very high (approximately 1000 times higher than in the wind), this allowing small wave power plants in relation to the capacity thereof. Since the link shaft 58 is made in one piece and in order to be capable of rigidly interconnecting the rotational movements of the counterweight drums 15, another type of sliding clutch for reverse feeding must be used.
Dolor Sordo Significado
Furthermore, wave energy is more predictable than for instance wind power since waves are built by the wind during a long period of time and then continue as swell also after the wind has subsided. 2. The absorption of wave energy can be limited by the use of a sliding clutch 55, which consequently can work as an overload protection, see FIGS. The width of the buoy 3 can be adapted to the average wave length of the waves at the sea surface, so that the buoy has a larger width for larger average wave lengths. 2 d and 2 e, on the underside of the buoy 3. Furthermore, the shape of the buoy can be adapted. The magnitude of this torque can also be adjustable and controllable.
5. The counterweight 19 is used to create a resilient resisting force and thereby gives an even torque between the counterweight drum 15 and the driveshaft 11, which in that way drives the first part and second part of the generator in relation to each other. The anchor drum 9 is in a suitable way mechanically connected to the drive shaft 11. Como aliviar el dolor en las articulaciones . Such a mechanical coupling can include the following two functions. In the transmission, the driveshaft can be mechanically connected to the first one of the parts of the electric generator. 13. A gearbox can be used to increase the rotation speed of the electric generator, this allowing the use of a smaller and more resource efficient high speed generator. Also, such a gearbox can make it possible to permanently attach the second part of the electric generator, the stator, to the buoy, by connecting the gearbox to the counterweight drum, which can simplify the electrical connection and encapsulation of the generator and reduce the rotating mass in the construction.
Dolor Neuropático Crónico
The energy accumulation device can in the same embodiments comprise a counterweight drum which is rotationally mounted to the driveshaft and a second elongated means for coupling movements of the counterweight to make the counterweight drum rotate. In one embodiment the energy accumulation device can comprise a counterweight, arranged as a lead, to also move upwards for said first movements of the buoy or the other device, thereby increasing its potential energy. This can be achieved by the fact that the anti-reverse mechanism 51 of the anchor drum can be controllable, or advantageously by a sliding clutch 55 for the anchor drum, as will be described below. The sliding clutch 55 of the anchor drum 9 can be mounted between the anti-reverse mechanism 51 of the anchor drum and the anchor drum as schematically shown in FIG. 16 b. Full power of the generator and full speed of the counterweight are reached when the sliding clutch 25, 25′ for reverse feeding is completely disengaged, so that the full torque from the counterweight is applied over the generator.
The sliding clutch 25′ for reverse feeding is in this case located between the larger gearwheel 27 which cooperates with the flange 31 of the anchor drums 9, and the through-going link shaft 58, to which the gearwheels are rigidly mounted. The sliding clutch 201 has a function corresponding to that of the sliding clutch of the anchor drum, see FIG. A possibility is to use helicoidal grooves 39, 41, 43, 45 on the cylindrical winding surfaces of the drums 9, 15, see FIG.