CN104728046B - A kind of new stormy waves electricity generation system - Google Patents

Abstract

The invention discloses a novel wind-wave power generation system, which comprises a vertical-axis wind turbine, a linear rotation two-degree-of-freedom generator, buoys and fixed piles. The rotating shaft of the vertical axis wind turbine is a hollow structure, and the mover of the linearly rotating two-degree-of-freedom motor passes through the rotor and enters the cavity of the rotating shaft, and can reciprocate in the cavity of the rotating shaft. The rotating shaft is rigidly connected with the rotor of the linearly rotating two-degree-of-freedom generator, and under the action of wind force, the rotating shaft and the rotor of the motor rotate. The mover of the linearly rotating two-degree-of-freedom generator is rigidly connected to the buoy, and driven by waves, the buoy and the mover of the motor reciprocate up and down. The end of the stator of the motor is connected rigidly with the fixed pile, and the whole power generation system is fixed by the fixed pile. The invention realizes simultaneous recovery and utilization of wind energy and wave energy by introducing a linear rotary motor, ensures independent and stable operation of two power generation units, and improves energy collection efficiency.

Description

A new type of wind wave power generation system

technical field

The invention relates to a wind and wave power generation system using oceans, lakes, rivers and other fields, belonging to the field of power generation.

Background technique

The development of the economy and the advancement of science and technology have prompted people to continuously increase their demand for energy. The traditional primary energy is exhausted, and people have to seek clean and renewable energy, such as solar energy, wind energy, tidal energy, wave energy, biomass energy and so on. Facing the global energy crisis, whether to fully and effectively utilize all kinds of clean energy has become an important factor restricting the economic development, peace and stability of the world.

my country has vast oceans, long and tortuous coastlines, and rich marine energy. Vigorously developing new marine energy can effectively alleviate the problems of traditional energy depletion, increased energy costs, and unreasonable energy allocation. Wind energy and wave energy are green and renewable energy stored in the vast ocean, with huge content and broad application prospects. Wind energy is the kinetic energy generated by a large amount of air flow on the earth's surface, and wave energy refers to the kinetic energy and potential energy of ocean surface waves. As people's understanding of wind energy and wave power generation continues to deepen, various wind power generation and wave power generation devices continue to emerge. After years of development, countries such as Britain, Japan, Ireland, Norway, Spain, Portugal, Sweden, Denmark, India, the United States and China have developed a large number of wind and wave power generation devices, floating on the sea or fixed on the coast.

At present, the way that people use wind energy and wave energy is to convert kinetic energy or potential energy into electric energy, and the devices developed basically face a single energy source, either wind energy or wave energy. How to further improve the utilization rate of the two energy sources, increase the power density of the energy conversion device, and share the investment cost has important theoretical significance and practical value for the utilization and development of marine resources.

Contents of the invention

Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a new type of wind wave power generation system, which aims to realize the simultaneous recovery and utilization of wind energy and wave energy by introducing a linear rotation two-degree-of-freedom generator to increase energy Power density of the conversion device.

Technical solution: In order to achieve the above purpose, the technical solution adopted by the present invention is: a new type of wind wave power generation system, including a vertical axis wind turbine, a linear rotation two-degree-of-freedom generator, buoys and fixed piles;

The rotating shaft of the vertical axis wind turbine is a hollow structure, the mover of the linearly rotating two-degree-of-freedom generator passes through the rotor and enters the cavity of the rotating shaft, and the mover has no contact with the rotor, and the mover is embedded in the first bearing through the first bearing. In the rotating shaft, it can reciprocate in the cavity of the rotating shaft. The rotating shaft is rigidly connected to the rotor of the linearly rotating two-degree-of-freedom generator;

The upper part of the stator of the linear rotation two-degree-of-freedom motor is sunken, and the axial section of the entire stator is concave. A second bearing is set on the inner side of the concave to support the rotor. The lower end of the motor stator is rigidly connected to the fixed pile. The entire power generation system is fixed by fixing piles.

Preferably: the linear rotation two-degree-of-freedom generator includes a rotary motion unit and a linear motion unit; the rotary motion unit uses wind energy to generate electricity, and the linear motion unit uses wave energy to generate electricity.

Preferably: the rotary motion unit includes the rotor of a linearly rotating two-degree-of-freedom generator, an axially magnetized permanent magnet, a three-phase symmetrical winding, a stator, and a second bearing; the rotor is connected to the concave shape of the stator through the second bearing The inner surface of the rotor is rotationally connected, the axially magnetized permanent magnet surface is attached to the lower surface of the rotor, and the N-pole permanent magnets and S-pole permanent magnets are alternately distributed along the circumferential direction of the lower surface of the rotor; while the concave surface of the stator has a diameter of The slots are slotted, and the three-phase symmetrical windings are placed in the slots;

The linear motion unit includes a mover of a linear rotation two-degree-of-freedom generator, an annular permanent magnet, a three-phase annular concentrated winding and a stator; the annular permanent magnet is radially magnetized and surface-attached to the linear rotation two-degree-of-freedom generator On the outer surface of the mover, the ring-shaped N-pole permanent magnets and the ring-shaped S-pole permanent magnets are alternately distributed along the axial direction of the mover; while the inner surface of the stator is circumferentially grooved, and a three-phase ring-shaped concentrated winding is placed in the groove, and The axis of the three-phase annular concentrated winding coincides with the axis of the mover.

Preferably: the buoyancy force received by the buoy is greater than or equal to the total gravity of the mover and the buoy, so that the mover and the buoy float on the water surface.

Preferably: a limit switch is provided in the cavity of the rotating shaft to limit the linear motion stroke of the mover of the linearly rotating two-degree-of-freedom generator.

Preferably: the impeller of the vertical axis wind turbine is a mechanism of the vertical axis wind turbine.

Preferably: the impeller of the vertical axis wind turbine is "φ" type or "H" type.

Further: the output end of the linear rotation two-degree-of-freedom generator is connected with a power electronic conversion device and an energy storage link.

Preferably: the fixed pile adopts a composite sleeve, and the height of the fixed pile is changed by stretching the iron pipe to ensure that the motor stator is on the water surface.

Beneficial effects: Compared with the prior art, a novel wind wave power generation system provided by the present invention has the following beneficial effects:

A new type of wind wave power generation system proposed by the present invention, under the action of wind force, the vertical axis wind turbine makes the rotor rotate, the axially magnetized permanent magnet establishes a rotating magnetic field in the outer air gap, and the three-phase symmetrical winding generates induced electromotive force; Under the action of waves, the mover moves up and down, the annular permanent magnet establishes a traveling wave magnetic field in the inner air gap, and the induced electromotive force is generated in the three-phase annular concentrated winding. Under normal circumstances, the power generation device works under the action of wind turbine and wave at the same time. This invention realizes the simultaneous recovery and utilization of wind energy and wave energy by introducing a linear rotation two-degree-of-freedom generator, so as to share construction costs and increase energy conversion devices. power density. A novel wind-wave power generation system proposed by the present invention based on a linear rotating two-degree-of-freedom motor also has the following advantages:

1) Two-stage energy conversion (wave energy-mechanical energy-electric energy), reducing the transmission mechanism and improving power generation efficiency;

2) Function reuse of system components, wind power and wave power share manufacturing costs, reducing cost input;

3) The combined power generation form of wind energy and wave energy is shared in the three-dimensional space, and the system structure is compact;

4) With a single motor structure, the internal space of the motor is fully utilized, and the volume and weight of the system are significantly reduced;

5) The magnetic circuits of the linear and rotary drive units are basically independent, and electromagnetic design and optimization can be carried out separately;

6) The motor components are similar to the fixed-rotation (moving) substructure of traditional motors, with simple structure and easy processing and manufacturing;

7) The two sets of armature windings are independent of each other, and it is easy to realize the decoupling control and adjustment of the output electric energy.

Description of drawings

Fig. 1 is the structural representation of power generation device;

Fig. 2 is a schematic diagram of the rotor structure of the rotary motion unit;

Fig. 3 is an axial sectional view of the linear motion unit.

Among them, 1 is a vertical axis wind turbine, 2 is a rotating shaft, 3 is a rotor, 4 is an axially magnetized permanent magnet, 5 is a three-phase symmetrical winding, 6 is a ring permanent magnet, 7 is a three-phase ring concentrated winding, 8 9 is a motor stator, 9 is a mover, 10 is a buoy, 11 is a fixed pile, and 12 is a second bearing.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings.

A new type of wind and wave power generation system, as shown in FIG. 1 , includes a vertical axis wind turbine 1 , a linear rotation two-degree-of-freedom generator, buoys 10 and fixed piles 11 .

The rotating shaft 2 of the vertical axis wind turbine 1 is a hollow structure, and the mover 9 of the linearly rotating two-degree-of-freedom motor passes through the rotor 3 and enters the cavity of the rotating shaft 2, and the mover 9 has no contact with the rotor 3, and the mover 9 The first bearing is embedded in the rotating shaft 2 and can reciprocate in the cavity of the rotating shaft 2 . The rotating shaft 2 is rigidly connected to the rotor 3 of the linearly rotating two-degree-of-freedom generator;

The upper part of the stator 8 of the linear rotation two-degree-of-freedom motor is sunken, and the axial section of the entire stator 8 is concave, and the second bearing 12 is arranged on the inner side of the concave to support the rotor 3, and the lower end of the motor stator 8 is fixed to the The pile 11 is a rigid connection, and the whole power generation device is fixed by the fixed pile 11.

The linear rotation two-degree-of-freedom generator includes a rotary motion unit and a linear motion unit; the rotary motion unit utilizes wind energy to generate electricity, and the linear motion unit utilizes wave energy to generate electricity.

As shown in Figure 2, the rotary motion unit adopts the structure of a disc motor, including a rotor 3 of a two-degree-of-freedom generator for linear rotation, an axially magnetized permanent magnet 4, a three-phase symmetrical winding 5, a stator 8 and a second Bearing 12; the rotor 3 is rotationally connected with the concave inner surface of the stator 8 through the second bearing 12, and the axially magnetized permanent magnet 4 is attached to the lower surface of the rotor 3, and the N-pole permanent magnet and the S The pole permanent magnets are distributed alternately along the circumferential direction of the lower surface of the rotor 3; while the concave surface of the stator 8 is radially slotted, and the three-phase symmetrical windings 5 are placed in the slots.

As shown in Figure 3, the linear motion unit includes a mover 9 of a linearly rotating two-degree-of-freedom generator, an annular permanent magnet 6, a three-phase annular concentrated winding 7, and a stator 8; the gap between the mover 9 and the stator 8 is an inner air gap. The outer surface of the mover 9 is pasted with radially magnetized annular permanent magnets 6, and the annular N-pole permanent magnets and annular S-pole permanent magnets are alternately distributed along the axial direction of the mover 9; while the inner surface of the stator 8 is grooved circumferentially , the three-phase annular concentrated winding 7 is placed in the slot, and the axis of the three-phase annular concentrated winding 7 coincides with the axis of the mover 9 .

The buoyancy force received by the buoy 10 is greater than or equal to the total gravity of the mover 9 and the buoy 10, so that the mover 9 and the buoy 10 float on the sea surface.

The linear motion stroke of the mover 9 of the linearly rotating two-degree-of-freedom generator can be adjusted by a limit switch.

The impeller of the vertical axis wind turbine 1 is the mechanism of the vertical axis wind turbine.

The impeller of the vertical axis wind turbine 1 is "φ" type or "H" type.

The output end of the linear rotation two-degree-of-freedom generator is connected with a power electronic conversion device and an energy storage link.

In the wind wave power generation system of this embodiment, under the action of wind force, the vertical axis wind turbine 1 causes the rotor 3 to rotate, and the axially magnetized permanent magnet 4 establishes a rotating magnetic field in the air gap between the rotor 3 and the stator 8. The induced electromotive force is generated in the symmetrical winding 5. Under the action of waves, the mover 9 moves up and down, the annular permanent magnet 6 establishes a traveling wave magnetic field in the inner air gap, and an induced electromotive force is generated in the three-phase annular concentrated winding 7 . In general, the power generation device works under the action of wind turbine and wave at the same time. The invention realizes simultaneous recovery and utilization of wind energy and wave energy by introducing a linear rotation two-degree-of-freedom generator.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications are also possible. It should be regarded as the protection scope of the present invention.

Claims (9)

1. a kind of new stormy waves electricity generation system, it is characterised in that：Including vertical axis windmill (1), straight line rotation two-freedom Generator, floating drum (10) and spud pile (11),

The rotary shaft (2) of the vertical axis windmill (1) is hollow structure, and the mover (9) of straight line rotation two-freedom motor is worn The cavity that rotor (3) enters rotary shaft (2) is crossed, and mover (9) and rotor (3) are contactless, mover (9) is embedded by clutch shaft bearing In rotary shaft (2), it can be moved back and forth in the cavity of rotary shaft (2)；Rotary shaft (2) rotates two-freedom generator with straight line Rotor (3) be rigidly connected；

The upper part of the stator (8) of straight line rotation two-freedom motor is caved in, and the axial section of whole stator (8) is concave, Second bearing (12) support rotor (3) is set on the medial surface of spill, and bottom and the spud pile (11) of motor stator (8) are It is rigidly connected, is fixed a whole set of electricity generation system by spud pile (11).

2. a kind of new stormy waves electricity generation system according to claim 1, it is characterised in that：The straight line rotation two is freely Spending generator includes rotary motion unit and linear motion unit；The rotary motion unit utilizes wind power generation, and described straight Line moving cell utilizes wave-energy power generation.

3. a kind of new stormy waves electricity generation system according to claim 2, it is characterised in that：The rotary motion unit bag Include rotor (3), the permanent magnet (4) of axial charging, three-phase symmetric winding (5), stator (8) that straight line rotates two-freedom generator With second bearing (12)；The rotor (3) is rotated with the medial surface of the spill of stator (8) by second bearing (12) and is connected, institute State lower surface of permanent magnet (4) Surface Mount in rotor (3) of axial charging, and N poles permanent magnet and S poles permanent magnet are along under rotor (3) The circumferencial direction on surface is interspersed；And recessed surface of stator (8) is radially slotted, the three-phase symmetric winding (5) is placed on In groove；

The linear motion unit includes mover (9), annular permanent magnet (6), the three-phase ring that straight line rotates two-freedom generator Shape concentratred winding (7) and stator (8)；Annular permanent magnet (6) radial magnetizing, Surface Mount rotates two-freedom generator in straight line Mover (9) outer surface on, and the N poles permanent magnet of annular and axis direction of the S poles permanent magnet along mover (9) of annular according to It is secondary to be interspersed；The annular concentratred winding (7) of three-phase, and three-phase annular are placed and the inner surface of stator (8) is circumferentially slotted, in groove The axis of concentratred winding (7) is overlapped with the axis of mover (9).

4. a kind of new stormy waves electricity generation system according to claim 3, it is characterised in that：What the floating drum (10) was subject to Buoyancy is more than or equal to the total force of mover (9) and floating drum (10) so that mover (9) and floating drum (10) are swum on the water surface.

5. a kind of new stormy waves electricity generation system according to claim 4, it is characterised in that：Cavity in rotary shaft (2) Interior setting limit switch, limits the linear motion stroke of the mover (9) of straight line rotation two-freedom generator.

6. a kind of new stormy waves electricity generation system according to claim 5, it is characterised in that：Vertical axis windmill (1) Impeller is the mechanism of vertical axis aerogenerator.

7. a kind of new stormy waves electricity generation system according to claim 6, it is characterised in that：Vertical axis windmill (1) Impeller is " φ " type or " H " type.

8. a kind of new stormy waves electricity generation system according to claim 7, it is characterised in that：The straight line rotation two is freely The output end of degree generator is connected with Technics of Power Electronic Conversion device and energy storage link.

9. a kind of new stormy waves electricity generation system according to claim 8, it is characterised in that：The spud pile (11) uses Composite bushing, changes the height of spud pile (11) by stretching iron pipe, it is ensured that motor stator (8) is on the water surface.