Electric generator

 

(57) Abstract:

Usage: to convert the energy of the oscillatory motion of ocean waves into electrical energy. The inventive movable element 3 is designed in the form of a cylindrical float with the annular gasket 4 made of ferromagnetic material arranged with a constant pitch along the longitudinal axis of the float.

The stator 1 is made in the form of a ring of a closed tank, in the axial hole 2 which is placed the float 3. Inside the tank near the walls of the axial bore 2 in the axial and circumferential directions is installed with an inclination angle of 45ogeneratrix of the spherical tank clapping membrane 8, in the center of each membrane is fixed a permanent magnet 9, concentric covered stationary winding 10. 1 Il.

The invention relates to electrical engineering, namely for the construction of electric generators that use the energy of the vibrational motion, for example, of the waves.

Known electric generator of oscillatory movement that uses energy, such as sea waves containing the stator winding embedded in the floating body, and mounted on a support movable element system watergame case, the excitation system, made with a permanent magnet, and the movable element in the form of a pendulum carrying a magnetic core with a winding [2]

A serious disadvantage of the known devices is the very low efficiency of energy conversion of the vibrational motion, for example, sea waves into electricity. This is because the level of EMF induced in the stator winding, when the oscillations are practically determined by the linear speed of the relative movement of the stator and the moving element fluctuations. In known devices of this speed and movement speed, for example, sea waves, are the values of the same order, then there is quite small that defines, respectively, and the low level of induced and the stator winding EMF.

The closest in technical essence and achieved result to the invention is an electric generator of oscillatory movement that uses energy, such as sea waves containing the stator winding and mounted on a support movable element with excitation system in the form of permanent magnets [3]

The disadvantage of this device is the low efficiency of energy conversion of the vibrational motion, for example, seawater is element fluctuations.

The invention is directed to improving the efficiency of energy conversion of the vibrational motion, for example, ocean waves into electrical energy.

This is achieved in that in an electric generator that uses the energy of the vibrational motion, for example, sea waves, containing a stator winding, a movable element, the excitation system permanent magnet, the movable element is designed as a cylindrical float with o-ring gaskets made of ferromagnetic material arranged with a constant pitch along the longitudinal axis of the float, the stator is made in the form of a ring of a closed tank, in the axial hole of which is placed a float, and inside the tank near the walls of the axial bore in the axial and circumferential directions is installed with an inclination angle of 45ogeneratrix of the spherical tank clapping membranes, each of which is fixed a permanent magnet concentric covered by a stationary winding.

The invention is illustrated in the drawing, which schematically shows a General view of the electrical generator, combined with a transverse Central section.

The electric generator includes a stator 1, is made in fny in the form of a cylindrical float with the annular gasket 4 made of ferromagnetic material, arranged with a constant pitch along the longitudinal axis of the float 3. Structurally, the float consists of a - shaped plastic sleeve 5 with threaded end portion and wears it 4 ferromagnetic and plastic 6 rings locked by a nut 7. Inside the tank 1 near the walls of the axial bore 2 in the axial and circumferential directions evenly installed with an inclination angle of 45ogeneratrix of the tank 1 spherical clapping membrane 8, in the center of each of which is fixed a permanent magnet 9, concentric covered stationary, attached to the tank 1 by the coil 10. Each of the winding 10 is connected with its rectifier (included in the diagonal of the diode bridge), the outputs of which (the second diagonal of the bridge) is connected to the common bus. Electrical connection scheme of the windings not shown, as this scheme is described in detail in [2] and [4] the Sleeve 11 is rigidly mounted in the lower portion of the axial bore 2, and the bracket 12 to limit axial movement of the float 3. Simultaneously, the bracket 12 is to install pads 13 for removing an electrical signal, and for suspension of the generator on the water surface. Design and principle of operation clapping membranes described in detail in [5] Accommodation is worn between the three required for reliable operation of the device factors: the maximum approximation of the magnets 9 to ferromagnetic washers 4, the obtained maximum value of the axial component of the magnetic interaction force of the magnets 9 and the spacers 4, the maximum approximation of the direction of the line of action of the component of the force to the axis of maximum sensitivity (axis of symmetry) clapping membranes 8.

The device operates as follows.

At clash of the waves, the water level contained in the hole 2, begins to rise, and the float 3 moves upward. Let one of clapping membrane 8 is, for example, in its upper position. When lifting the float 3 with the approach of one of the ferromagnetic strips 4 on the bottom a sufficient distance to the magnet 9 on the membrane 8 by the vertical component of the force of attraction of the magnet 9 to the strip 4, the downward, the membrane 8 relay trigger (jumps) in its lower position. However, the same strip 4, continuing to move with the float 3 upwards, rising above the membrane 8, again due to the vertical component of the force of gravity, upward will cause the membrane 8 to jump to the top position. After that, the membrane 8 from the bottom coming next strip 4, the membrane 8 again jumps back to its lower position, and so on, So when lifting the float 3 within the floor p of the first hole 2. When the recession of the waves and the movement of the float 3 down the process of peremanivanija membrane 8 is repeated. Thus relay is practically continuous movement of the magnet 9 on the membranes 8 inside covering the magnet winding 10 with a very high relative velocities. Naturally, induced in the windings 10 EMF, straighten the rectifiers and folding in General tire, characterized by a considerable amount. Thus, the relatively slow process of crowding and fall of the waves, characterized by a considerable period, is converted into the device in a continuous relay of moving magnets 9 for winding 10 with large relative velocities. In the implementation here sharply nonlinear relay process has been considerably increase the efficiency of converting sea wave energy into electrical energy.

To ensure a practically continuous process operation membranes 8 stepping distance between the ferromagnetic rings 4 should be carefully experimentally adjusted by selection of a certain thickness of the plastic rings 6, is inserted between the rings 4. Naturally, the step between the ferromagnetic washers 4 (vertical membrane 8 and the lower the inertia of the membrane 8, that is above the maximum possible frequency of their operation.

An important advantage of the device is that the number installed in the vertical and circumferential directions of the membrane 8 has virtually no limits (except, of course, the size of the device), the power required for actuation of the membrane is negligible. That is, even at small sizes float, power, cast due to acting on it lifting force from the waves, is many times greater than the power required for actuation of the membranes 8 surrounding the float 3 in the axial and circumferential directions. This, according to the authors, open in principle, rich opportunities for improving the efficiency of energy conversion through the development of special types of more powerful and efficient relay elements with significant progress and speed of actuation (the authors used in the proposed device serial instrument clapping membrane). The authors hope that this invention will serve as beginning to develop a new class of power converters with conversion smooth movement of the working environment (waves, wind, etc.,) in relay, high-speed movement of the actuator.

The claim 35/00, publ. 1978.

3. A. S. USSR N 587570, CL H 02 K 35/00, publ. 1978/prototype/.

4. A. S. USSR N 776488, CL H 02 K 35/00, publ. 1978.

5. Andreeva L. E. Elastic elements of the devices. M. the motor cycle", 1962, S. 311-315.

Electric generator that uses the energy of the vibrational motion, for example, sea waves, containing a stator winding, a movable element, the excitation system permanent magnet, characterized in that the movable element is designed as a cylindrical float with o-ring gaskets made of ferromagnetic material arranged with a constant pitch along the longitudinal axis of the float, the stator is made in the form of a ring of a closed tank, in the axial hole of which is placed a float, and inside the tank near the walls of the axial bore in the axial and circumferential directions is installed with an inclination angle of 45ogeneratrix of the spherical tank clapping membrane, in the centre of each of which is fixed a permanent magnet concentric covered by a stationary winding.

 

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FIELD: wave-energy-to-electric-power conversion.

SUBSTANCE: proposed wave energy plant has supporting frame with vertical guides, float installed for vertical reciprocation that accommodates ratchet gears provided with coaxial central holes, shaft passed though these holes and fixed in supporting frame to laminar screw section whose top and bottom parts are twisted in opposition and contact ratchet gears disposed in cylindrical casing with through holes; it also has electric generator. Float is mounted for displacement along vertical guides and has inertial member disposed inside for rotation and displacement together with float; inertial member contacts inner surface of float casing through rollers. Cylindrical casing is joined with inertial member; electric generator is disposed within supporting frame and kinematically coupled through extensible joint between inertial member and drum installed for joint rotation with the latter and with gear transmission.

EFFECT: enhanced power output of wave energy plant generator.

1 cl, 1 dwg

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