Sailing pulse wind-driven power plant

FIELD: power industry.

SUBSTANCE: sailing pulse wind-driven power plant includes actuating element, energy converter and device protecting against out-of-limit wind loads. Actuating element is a flexible sail. Converter is made in the form of pulse generators with electromagnets, which are combined into a general scheme. Armatures of electromagnets are connected to sail sections. Sail sections have the possibility of automatic control of the force of wind flow acting on it for example by changing the angle between sail wings.

EFFECT: maximum possible simplification of design of wind-driven power plants; abrupt reduction of capital and operating costs and provision of full safety, high reliability and self optimisation of operating mode under any wind conditions.

3 dwg

 

The invention relates to the field of wind energy and can be used for power supply of objects of different purposes, even in conditions of densely populated areas.

Known wind power plants (WPP) a wide variety of designs designed for specific conditions, in which they showed quite satisfactory results.

In practice, used exclusively design with rotating working body: propeller, rotor, drum blades, etc. because, as we know, is not yet created a model of an alternative form that has sufficient electrical capacity and reliability in actual use.

Traditional wing, rotary, drum, and similar wind farms are, however, some significant drawbacks that limit, and frequently exclude the possibility of their use: the threat of destruction forced to leave without the use of extensive "danger zone", noise and visual effects create discomfort for the inhabitants of the area, moving blades represent interference with bird migration. Construction of the wind farm does not provide the optimal mode of its operation in the estimated speed range of the wind flow and does not guarantee its integrity under extreme wind loads, not to mention its bore is of osobnosti to work in such conditions.

Moreover, all these settings are not very cheap in manufacture and in service qualified personnel.

In regard to the proposed alternative of the device of the wind farm is not found more or less similar analogues.

Object of the invention is possible to simplify the design of the wind farm, a sharp reduction in capital and operating costs and - most importantly-ensuring full security, high reliability and soroptimists mode of operation in all wind conditions.

The problem is solved radically change the design of the wind farm, resulting in established sailing pulsed wind power installation comprising a working body, the energy Converter and the protection device beyond wind loads, in which, according to the invention, the working body is a flexible sail, the Converter is implemented in the form of a group United in the overall scheme of generators of electrical impulses with the electromagnets, the armature of which is connected with the sections of the sail, with the possibility of automatic control of the force acting on it the wind flow, for example, by changing the angle between the wings of the sails.

Flexible sail, each section of which lies between the vertical lines, transmits the force of the wind pressure on the movable armature of the electromagnet. Move the recent changes in time of the magnetic flux, created by the current in the magnetizing coil, which induces an EMF in the working winding of the generator. Installation of wing sails with the ability to change the angle between them provides optimum performance sections sails regardless of the pressure of the wind in the whole range from minimal to extreme values.

The invention is illustrated by the following illustrations: figure 1 shows a General view of the inventive sailing impulse of a wind power installation (PILAU); figure 2 - view "And" her wing to leeward; figure 3 is a horizontal section "b-B" wing in the middle.

Sailing pulsed wind power plant comprises a flexible sail, consisting of two half - wings 1 and divided into sections 2 mounted thereon on yards and 3 vertical lines 4, and these section 2 is somewhat wider the step of fastening straps 4 for 3 yards. The wings 1 are fixed to the rotary column 5, the mast 6 limited their mutual rotation. Under each wing 1 is associated with the total design of the Converter compartment 7 with the electromagnets 8, armature 9 which are connected with lines 4 and air springs 10. The cores of the electromagnets 8 are working winding 11 connected through the rectifiers 12 General tire, connected through the annular current collector 13 with the external network PEPEU, as well as to connect the n successively magnetizing winding 14, connected to a common bus. The external network may be known smoothing filters, inverters, storage, switching, protection and measuring devices.

PEPEU works as follows.

In calm conditions the cores of the electromagnets 8 (even in the absence of magnetizing current and fragments with permanent magnets) retain a small magnetization, but enough with the resumption of the wind, when the oscillating parts of the sail through the lines 4, mounted on yards 3, change the gap between the anchors 9 and the poles of the cores, changing the residual magnetic flux began to generate in the working windings 11 weak currents that flow through the rectifier 12 will be transmitted to the common bus, and to them, as shown in the wiring diagram (figure 2)connected magnetizing winding 14. This will increase the magnetic flux and the subsequent generated by the current pulses, which, in turn, will increase the magnetizing current of the core. The voltage at the General tire avalanche will increase to a level at which the magnetizing current produces a maximum force of attraction anchors 9 to the poles of the electromagnet 8, which is capable of overcoming the force of the wind at this time. Thus, automatically set the optimum mode of operation of sections 2.

Along with this, the spring-loaded wings 1 sails as the car is automatically depending on wind pressure are set at such an angle one to another, when the optimum mode of operation of the entire installation and maintained mechanical and electrical loads within acceptable limits.

Both tasks - automatic regulation of power and protection from exorbitant modes is solved by automatic maintenance (estimated working and transcendent mode of the wind stream) constant force of the wind pressure on the sail by changing the total sail wings 1 due to changes under the influence of changing wind pressure angle between them is equal to 2α (see drawing 3).

The spring characteristic is determined by the dependence of its resistance force F on the value of this angle:

F=F0+f(PS/sinα),

where F0preliminary preload; P is the wind pressure; S is the total area of the sail. This dependence is provided by the famous theoretical mechanics kinematic transmission schemes effort, in this case - on the wings 1 sails to the total spring, and / or its structures. The limits of variation of the angle (αmin≤α≤αmaxwhere αmax≈π/4) are determined by the stops marked on the callout 3 zaterjannye triangles, and synchronous rotation of the wings (in opposite directions) is interconnected kinematic sites on the rotary column 5, the top and bottom of the sail. One of them (top) shown in venosc is 3.

In steady state operation section 2 sails, feeling the pressure of the oncoming air flow, reject lines 4 from the straight position than repeatedly strengthened their impact on anchor 9.

The trajectory of the horizontal movement of the middle part of the strap 4 is shown in a balloon (see figure 3) It is determined by the sum of applied forces as linear (longitudinal elasticity of the straps 4 and springs 10)and nonlinear (magnetic force) characteristic. For the emergence of self-oscillations have all the necessary conditions: the presence of external forces (air flow), the elasticity of the elements of the system, inertial forces.

A mathematical model of this particular system is not yet available, however, this process is similar to the long-known in aviation phenomenon - flutter. Only in this case, the actuation of one section of the sail trigger the next windage which at this point increases dramatically (Domino effect), and return the previous section to its original position reduces windage following and contributing to its return to its original position. So on the sail with a large number of partitions creates a "wave" process that adjusts the generation of pulses in the electric circuit of the Converter.

In the explanation of the same process of moving the middle part of the sling 4 along the trajectory shown in nevinost (figure 3), consider the forces acting on each segment of this trajectory. At the moment of crossing the strap 4 under wind pressure force of attraction of the armature 9 of the latter is detached from the magnetic poles, and the middle part of this sling starts accelerated motion on "scan" sailing section 2. On this trajectory at the point where the falling force of the sling to the anchor will be equal in magnitude to the total opposing force of the spring 10 and the magnetic field, accelerated motion will change to slow, and in the zone of maximum deviation of this sling 4 from its original position on it together with the inertial force is affected the same by the spring force and the magnetic field, and a new aerodynamic lifting force from the velocity difference of the wind flow on both sides of the "deployment" section (with its back side wind flow not). These are attached to the strap and matching the direction of the force transfer it (by convex trajectory) to its original position so quickly that the section does not have time "to be filled" with the wind, after which a new cycle begins.

Each such cycle in the operating mode takes fractions of a second and generates a pair of opposite electrical pulses are converted by a rectifier 12 in a unipolar pulsating current.

To smooth the pulsating current appropriate to include in the Electrochem capacitors, behind the current collector 13, mounted on the supporting structure - the mast 6, or until it is on General tires.

Increase capacity of PEPEU can be achieved not only by increasing the area of the sails, but the number of pairs of their wings (with their converters), with such modules floors on a common rotary column 5.

So, considered PEPEU have the following advantages over wind farms. They are not difficult to make: with the power of several kW unit can be assembled in a production environment even repair shops. They do not require highly skilled maintenance, reliable and safe. All this creates the possibility of development of such facilities, which would not only reduce the burden on regional energy balances, but also will allow to solve complex infrastructure problems during the development and colonization of new territories, to maintain their ecological conditions, and at the same time to ensure that the regions are not in demand of production space and labor resources.

Sailing pulsed wind power installation comprising a working body, the energy Converter and the protection device beyond wind loads, characterized in that the working body is flexible sail, the Converter is implemented in the form of integrated into the overall scheme of pulse generators with ELEH what tromagnetism, anchors are associated with sections of the sail, with the possibility of automatic control of the force acting on it the wind flow, for example, by changing the angle between the wings of the sails.



 

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