Wind-driven power plant

FIELD: power industry.

SUBSTANCE: wind-driven power plant includes wind wheel installed on the mast and provided with vertical rotation axis and blades interacting with rotor-inductor of generator. Internal surface of rotor-inductor is provided with a system initiating magnetic field by means of constant magnets; besides, torque moment from blades of wind wheel is transferred by means of system of traverses and power shaft to generator. Plant also includes a control unit. Generator is end-type, and stator with coils is located inside the generator and foxed on its axis-support; rotor-inductor of generator rotating on bearings about generator axis-support is formed in its turn with a housing and upper and lower shields installed on its external part, and is arranged between upper and lower traverses. Internal ends of traverses are installed by means of fasteners on shields of external part of rotor-inductor housing; in addition, rotor-inductor housing serves as power shaft.

EFFECT: reliable operation of the plant due to simpler design and reduced overall dimensions and weight by means of reduction of load on generator bearings and bending moment on its axis-support.

2 dwg

 

The invention is intended for wind energy and can be widely used in plants for production of electricity or mechanical energy.

Known wind power installation, comprising a frame, a work unit-the rotor blades and the generator of electric current, is further provided with placed on the platform front and side versabrite and device orientation of the latter relative to metropolice. The platform is made with a possibility of rotation relative to the frame.

RF patent for the invention №2169289, MKI F03D 3/00; date of publ. 2001.01.10.

Known wind turbine with wind wheel with a vertical axis of rotation, provided with not less than three vitreosynerysis elements bonded with radial arms fixed to the vertical axis of rotation at right angles to it, while the outer ends of the traverse supported on the annular support, in addition, a wind wheel mounted for engagement with a generator of electricity.

RF patent for the invention №2283968, MKI F03D 3/00, date of publ. 2006.09.20.

The closest technical solution of the present invention is a wind turbine generator that contains the drive blades with aerodynamic surfaces and generating a node that includes a rotor with permanent magnets and a rotating housing is with the windings, moreover, permanent magnets fixed on one drive blades and they interact with the windings installed on another drive of the blade, thus winding the blades are connected with a fixed set of the current collector.

Patent of the Russian Federation on PM No. 80516, MKI F03D 3/00, date of publ. 2009.02.10.

Modern vertical-axis wind turbines consist of four main parts: working blades, the energizing of metropolice; power drive for transmitting torque; generator producing electric power; a control unit and power supply that handles produced by the generator of electric current.

The disadvantages of driving devices used in modern models of vertical-axis wind turbines are the complexity of the structures and a large axial load-bearing generators of wind turbines.

The technical result are simplifying the design of the facility, reducing its size and weight by reducing the load on the generator bearings and reduce the bending moment on its axis-support.

The technical result is achieved due to the fact that the wind turbine has established the mast wheel with a vertical axis of rotation. The wind wheel is equipped with working blades interacting with the rotor of the induction generator. In the morning the surface of the rotor of the inductor is supplied by the system inducing a magnetic field using permanent magnets. When this torque from the working blades of the wind turbine using the traverse system and the power shaft is transmitted to the generator.

The installation also contains a control unit.

The generator made a face, and a stator with coils located inside the generator and mounted on its axis bearing. The rotor-inductor generator, rotating on bearings about the axis bearing generator, formed by the housing and mounted on the outer part of the upper and lower shields and placed between the upper and lower traverses. The inner ends of the traverse using fastening elements mounted on the panels of the outer part of the rotor housing-inductor end of the generator. This power shaft is the case of the rotor of the inductor, and the magnitude of the bending moment axis-bearing generator is the following dependencies:

Mi=3A·F, where

Mi is the magnitude of the bending moment axis support;

F is the force of the wind flow, perceived working blades installation;

a - the distance between the horizontal plane of symmetry of the generator and the horizontal plane of symmetry of one of the bearings.

The wind turbine also includes a control unit.

Wind power plant is illustrated by figure 1 and 2.

Figure 1 - wind turbine with a drive device diagram of the General form in section;

Figure 2 - wind power installation with a drive device (retention traverse to the boards of the rotor housing-inductor generator).

According to figure 1, 2 wind power plant comprises a beam 1 which transmit torque from the working blades 2 of the wind turbine directly to the boards of the rotor-exciter end of the generator, made by facing the scheme, that is, having outer rotating rotor-inductor with excitation from permanent magnets 9, consisting of an upper shield 3, the lower shield 4 and the housing 5 and rotating on bearings 6 about a fixed axis-supports 7 of the generator. The stator 8 of the generator coil is located inside the generator and attached to its axis bearing 7. The rotor-inductor made with permanent magnets 9 that serve to create a magnetic field. Wind power plant mounted on the mast 10. Beam 1 are attached directly to the panels 3 and 4 of the rotor of the inductor (see figure 2), which in their Central part and near the bearing 6 is installed, the fastening elements 11 of the inner ends of the traverse 1, with the upper beam attached to the upper shield 3, and the lower traverse to the lower shield 4, that is, the generator is located between the upper and lower arms, and a housing 5 of the rotor-exciter end of the generator performs the function of the power drive shaft installation.

Wind power installation RA the work as follows: the proposed device (see 1) is built around a simplified combined scheme, in which the driveline no intermediate power shaft, and the traverse system 1 is attached directly to the panels 3 and 4 of the rotor-exciter end of the generator, which in their Central part and near the bearing 6 is installed, the fastening elements 11 of the inner ends of the traverse 1, with the upper beam attached to the upper shield 3, and the lower traverse to the lower shield 4, that is, the generator is located between the upper and lower traverses 1 and the rotor-inductor generator performs the function of the power drive shaft installation.

Technical efficiency of the proposed solution is determined as follows. The primary force acting on the generator bearings and bending the axis of the support is the strength of the wind flow "F", perceived by the working blades. Power from the masses and imbalance does not exceed 10% and therefore not counted.

Asking tentatively define the dimensions of the actuator, it is possible to obtain the magnitude of the reaction supports bearing assemblies and torque, bending the axle-bearing generator. The results of the calculation are the following:

1. For wind turbines (known from the prior art)

- the value of the support reaction of the lower bearing -

F×2A=RL×2A; RL=F,

- the value of the support reaction of the upper bearing -

R=F+RL=2 F; R=2 F.

- the value of the bending moment axis-support -

Mi=F×(2a+2a+2a); Mi=6A·F.

2. For wind turbines - proposed technical solutions (Fig 1)

- the value of the reaction supports the upper and lower bearings

R=RL=0,5 F

- the value of the bending moment axis-support -

Mi=F×(a+2A); Mi=3A·F.

The application proposed as the invention of a wind power installation with a drive device helps to create a lightweight, reliable and easy to use product, and, as demonstrated by the calculations, the application of the proposed technical solutions approximately will reduce the load on the upper bearing of the alternator 4 times, on the lower bearing 2 times, and the moment the bending axis of the support 2 times. This allows to improve the physical characteristics of the installation, its life and reliability.

Wind power installation, comprising mounted on the mast wheel with a vertical axis of rotation, a wheel equipped with working blades interacting with the rotor of the induction generator, the inner surface of the rotor-coil equipped with the system, inducing a magnetic field using permanent magnets, while the torque from the working blades of the wind turbine using the traverse system and the power shaft is transmitted to the generator, the installation also includes a control unit, characterized in that the generator made a face, and a stator with coils located inside the generator and mounted on its axis bearing, in turn, the rotor-inductor generator, rotating on bearings about the axis bearing generator, formed by the housing and mounted on the outer part of the upper and lower shields and placed between the upper and lower arms, the inner ends of the traverse using fastening elements mounted on the panels of the outer part of the rotor housing-inductor end of the generator, while the power shaft is the case of the rotor of the inductor, and the magnitude of the bending moment axis-bearing generator is the following dependencies:
Mi=3A F,
where Mi is the magnitude of the bending moment axis support;
F is the force of the wind flow, perceived working blades installation;
a - the distance between the horizontal plane of symmetry of the generator and the horizontal plane of symmetry of one of the bearings of the generator.



 

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