KR20160140532A - Mobile offset axis wind power generator - Google Patents

Abstract

The present invention relates to a wind power generator capable of generating electricity by attaching a plurality of rotor blades, a plurality of rotation shafts, and a frame structure, operated as a mobile offset axis, to one single pole. Existing coaxial multirotor devices are installed on a low pole, have a low arrangement function of a shaft by a wind direction, and have a rear rotor influenced by wind, flowing into a front rotor, as general type rotor blades are overlapped. To solve the problems and produce more energy than before, a plurality of rotation shafts, including a rotational axis moving left, right, and upward depending on wind, and a plurality of double-sided rotor blades, producing rotational force in a change state of a receiving angle, are installed on a high pole, an inclined pole, or curved pole. Therefore, a mobile offset axis wind power generator is capable of being operated as an offset axis by changing a rotational axis direction of a drive shaft depending on the strength and direction change of wind.

Description

{MOBILE OFFSET AXIS WIND POWER GENERATOR}

[0001] The present invention relates to a wind turbine comprising a plurality of offset shaft shafts in one strut, and more particularly to a wind turbine comprising a strut with a warp or a strut structure including a flexible curved strut and a wire rope, , A plurality of rotating shafts and a plurality of double-sided rotor blades on each rotating shaft coax (Co Axis) are attached to a frame structure operating in the form of a mobile offset axis, The present invention relates to a wind turbine generating electric energy.

Generally, in order to increase the output and efficiency of the ground wind power generator, it is necessary to improve the performance of each element such as increasing the rotor torque by installing a power generator in a good wind resource space, developing the shape and size of the rotor, Is in progress.

One of the important factors for increasing the output of the turbine is the stability of the stable wind speed and the shape and size of the rotor. Therefore, in order to solve the problems such as irregularity of the wind speed and the wind direction of the ground, it is generally possible to improve the problem by installing a power generator on a high pillar having a strong wind speed and a stable wind direction. Also, by considering the size, shape, material and the like of the rotor to be attached to the high stiffness power generation device and the configuration and arrangement structure of the rotating shaft for transmitting the rotating force of the rotor, performance of the power generation device can be improved.

However, the conventional wind power generation technology, particularly the CO-AXIAL MULTI-ROTOR WIND TURBINE technology, adopts a low-height fixed stake type due to structural limitations, and the rotation axis has a certain offset angle Angle, or a proper offset angle change depending on the direction and intensity of the wind is limited, and there arises a problem of the line up function of the axis, so that there is a tendency not to take advantage of the characteristic advantages of the multiple rotors, There is a problem in that the strength of the long drive shaft (drive shaft) and the stability of rotation due to the bending phenomenon, and the limitation of the turning force of the small rotor blades.

[Patent Document 1] US 6692230 (SELSAM, D.S) 2004.02.17 [Document 2] US 20060233635 (SELSAM, D.S) 2006.10.19 [Literature 2] US 20130071228 (SELSAM, D.S) 2013.03.21

Conventional small-sized wind turbines are installed in a low-stiffness and small-sized rotor, so that it is difficult to utilize sufficient wind resources, low output efficiency and YAW stability are insufficient, and thus there are many problems in continuous energy production.

In particular, the technique of fastening conventional Co-Axis Multi-Rotor devices with a fixed angle offsets a drive shaft to a stationary stalk is called " The offset technique is applied assuming an ideal flow in which a plurality of rotors are independent of each other and operated in separate winds through separation of a gap between the offset angle of the shaft and the rotor, There are many differences from the Stall Version (Actual Flow). Therefore, this offset technology has a function to line up the shaft according to the wind direction, and has a low stability, and by continuously attaching a general type of rotor blade having the same size to the shaft, There has been a lack of consideration for reducing the rotational force of the rear rotor blades which will be influenced by the vortex or the like.

In order to solve the above-mentioned problems, the present invention provides a structure for a wind turbine in which a left-right / right-side wind turbine is installed on a part of a strut structure including an inclined strut, a curved strut or a wire rope, Upward of the rotor is mounted, and a plurality of rotating shafts and a plurality of rotor blades each having a plurality of different sizes are installed on the shaft. In order to produce a lot of energy, the rotation axis of the drive shaft, depending on the wind direction change and strength, allows the yawing and pitching of the drive shaft in the direction of the horizontal and vertical axes (Horizontal And Vertical Axis) Characterized in that it is operated in the form of an Offset Axis in a Mobile (Mobile Offset Axi) s Wind Power Generator.

The wind turbine generator according to the present invention is a new multi-rotor wind turbine in the form of a flexible offset axis and can generate power more than a single rotor or a conventional multi-rotor generator. It is possible to construct low-cost structure by lowering the unit cost, and it can be installed in tilted support, curved strut structure, wire rope, etc. including general vertical support, so that it can be installed independently on the sea island or mountainous terrain, It is possible to install large scale wind turbine belt through the enlargement of the structure and contribute to the wind power generation industry.

Figure 1 is a perspective view of a vertical strut base module of an offset axial wind power generator.
Figure 2 is a perspective view of a vertical strut multi-structure (vertical base module extension) perspective view of an offset axial wind power generator.
Fig. 3 is a perspective view of an inclined support basic module of an offset axial wind power generator
Fig. 4 is a perspective view of an inclined support multi-structure (inclined basic module extension) perspective view of an offset axial wind power generator
Fig. 5 is a perspective view of a curve holding base module of an offset axial wind power generator.
Fig. 6 is a diagram showing the relationship between the type of the center frame (hub frame)
7 is a structural view of a main frame (an exploded view of a main frame and an auxiliary frame)
8 shows a flange bearing and a spring structure connecting an auxiliary assembly and a driver shaft
Fig. 9 is a diagram showing a main frame reference, a vertical change range of a flexible offset axis
Figure 10 shows a flexible dual-face (flexibil dual space) rotor blade structure
Figure 11 shows the change image after the limit wind speed of the rotor blade
12 is a Kite Foil abstraction diagram according to an offset angle and a blade rotation locus

In order to solve the above-mentioned problems, the present invention provides a wind turbine having a tilting stanchion 130 including a vertical tower 110 adopted in a general wind turbine stanchion shape, or an elastic curve according to an elastic deformation of the stanchion A hub frame 111 (Fig. 6) is mounted on a part of a strut structure including a curved strut 150, that is, a flexible curve strut 150 allowing bending, and a cable and the like. The center frame can be divided into an elliptic type (161), a flange bearing type (162), and an arc rod type (163) according to the attachment form of the auxiliary frame.

2) (Fig. 4) which is composed of a single central frame (Fig. 1) (Fig. 3) and a plurality of single frame structures, .

The center frame 111 includes a main frame 171 connected to the strut by a bearing and an insert ring and rotatable 360 degrees about an axial cross section of the strut and a hinge rod 182 And is configured in the form of an auxiliary frame (Aux Frame) 181 which is connected to the horizontal platform 172 spring 173 and controlled by the inclined stabilizer plate 174.

The main frame 171 is fastened to the strut by a pair of bearings and the insertion ring 175 is provided at the lower end thereof and functions to rotate the devices attached to the strut in the left and right directions in the wind, Straight holding is adopted as the holding period in which the main frame is clamped.

The auxiliary frame 181 functions to rotate the attached devices in a pitch direction and is formed in a forward (+) shape from the front to the rear of the center frame to directly support the attached structure A main assembly 183 and an auxiliary assembly 184 connected to the left and right sides of the main assembly to support the rotation shaft 112.

The vertical stabilizer plate 113 and the horizontal stabilizer plate 114 are positioned at the rear of the main assembly 183. The vertical stabilizer plate moves the auxiliary frame 181 along the wind direction and rotates the main frame 171 360 degrees (Primary Directional Control). Secondary directional control is performed according to the structure and function of the rotor blade and the rotary shaft, in which the entire structure is biased rearward from the center frame, and the aerodynamic center and the center of gravity are located at the rear of the wind.

The horizontal stabilizer 114 secures the vertical stability of the main assembly 183 and enables the airfoil generated by the wind to produce a lift off moment according to the angle of the stabilizer plate. And the flexible foil 212 made of the airfoil of the horizontal stabilizer and the rotation locus 213 of the rotor blade operates in a floating manner from the vertical shaft And the Lift Off Moment created here reduces the load load on each frame and stanchion.

The main assembly 183 also maintains the weight balance through the cable 115 connected to the main assembly of the strut top 118 or the upper hub in accordance with the type of center frame Hub.

The auxiliary assemblies 116 are installed in pairs on the left and right sides of the main assembly depending on the shape and size of the generator. The supporting assembly 190 supporting the rotating shaft 112 is connected to the auxiliary assembly termination. Each of these support devices 189 ensures the rotation of the shaft shaft offset relative to the horizontal axis, and the center 186 of the support structure and the flange bearing 188, which permits a constant directional variation of the limited shaft within each support device section, And a spring device 187 for enabling left and right cushioning of the shaft, thereby absorbing the fluctuation of the drive shaft extending from each support section.

The drive shaft 112 according to the present invention is provided with two shafts as a basic unit structure (Fig. 1) (Fig. 3) for modularization in a basic form, (Fig. 2) (Fig. 4) in which a center frame (Hub Frame) is installed) is possible.

This drive shaft is of a detachable shape, supported by a support device 190 of each assembly, and coaxially secured with two or more rotor blades, and the AFPM generator 117 is located at the interruption of the shaft.

A mobile offset off-axis power generation system, which is a main problem solving means of the present invention, is a conventional coaxial multi-rotor technology system in which a plurality of rotors are installed on the same rotation axis, Since each installed rotor can not guarantee a sufficient rotational force only by the residual wind that has flowed into the front rotor and the obstructed wind, gradually increase the size of the blade so that the uninterrupted wind can enter the rear rotor, It increases within a certain range.

Specifically, the offset 210 in the X-axis direction is an angle used when the frame or the assembly of the power generator is manufactured, and is limited to 10 to 30 degrees in the present invention.

In addition, although the horizontal axis offset during operation of the apparatus may have a tendency to change from time to time depending on the wind, the functions of the stabilizers 113 and 114 installed at the rear end of the apparatus and the center of gravity and the drag center of the entire frame are biased toward the downwind direction And is always converged to maintain the fabricated angle because of the function of the entire structure device with respect to the center frame (Hub Frame) 111 to align in the wind direction.

Next, the initial reference value of the Y-axis direction offset 211, which is mobile according to the wind intensity and the slope or the curve shape of the stanchions, is 15-20 degrees, (172) and the spring (173). This reduces the factor of intentionally moving the load of the overall structure of the power generation system in the low wind speed direction or intentionally moving it toward the center of the cable axis to tilt backward.

In addition, in a proper wind speed state, an integrated amount of the rotation locus 213 of the entire rotor blades is generated as a kite foil 212 and becomes an appropriate angle at which a lift off moment can be generated. This vertical axis offset is fluidically varied 191 according to the shape of the support or the strength of the wind and the maximum angle 192 of the support 130 and the support frame 181 is fixed at 60 degrees. The varying offset angle maintains the stability of the axis by maintaining an average value over a period of time.

Through the offset of the horizontal axis and the vertical axis, the rotational locus 213 of the rear rotor blade is formed more outwardly and upwardly with respect to the forwardly located rotor blade, The residual wind and the fresh wind reaching the extended blade rotation surface offset in the left (right) upward direction enable the rotor blade to rotate with minimal disturbance.

The dual surface rotor blades (FIG. 10) are fastened to the rotating shafts at the top surface center 202 and the wing surface center 203 as the most critical structures for producing rotational force in the generator structure. As a result, the reduction of the rotating sectional area of the blades, that is, the reduction of the amount of wind and the distortion of the structure are caused, and a double-sided rotor blade is applied to correct this.

This blade is a flexible dual surface rotor blade composed of a flexible wing surface that is wider and wider than a general rotor blade. It is a flexible dual surface rotor blade, (200) is gradually bent in the downward direction (210) to reduce the wind contact surface to control the rotation speed.

In addition, the upper surface (201) generates a vertical wind direction factor that flows in each step in which the offset axis is fluidically changed. By utilizing this wind, a rotating force is generated to assist the function of the wing surface And the wing surface made of a flexible material is pulled and supported as a lever in a strong wind.

The main contents of the present invention are summarized as follows. In order to adopt a multi-rotor type in order to allow a slope or a curve of a strut to adopt a high stiffness and to secure more than a single rotor, In order to minimize the wind disturbance of the front rotor and to increase the amount of fresh wind inflow to the rear rotor, the multi-rotor adopts a floating offset method as the direction of the rotation axis and changes the angle of attack of the blades caused by the offset axis In order to cope with this problem, a flexible double-sided rotor blade was used to solve the problems of the coaxial multi-rotor generators.

130 incline
150 curve holding
111 Hub Frame
171 Main Frame
181 Aux Frame
183 Main Assemble
184 Aux assemble
201 Flexible Dual Surface Rotor Blade Top surface

Claims (5)

A coaxial multi-rotor wind power generator comprising: a vertical straight-strand structure having a strut structure including an inclined strut, a curved strut or a wire rope, a frame structure capable of moving left / right / upward, A plurality of different size double-sided rotor blades are fastened to the shaft, and the rotation axis of the drive shaft is moved in the horizontal and vertical directions (horizontal and vertical directions) (Mobile Offset Axis Wind Power Generator) that operates in the form of Offset Axis (Mobile) The method according to claim 1,
A wind power generator mounted on a strut structure that includes an inclined strut crest strut or a wire rope on a vertical straight strut The method according to claim 1,
A wind turbine with a frame that is coupled with a frame that can rotate 360 degrees horizontally in a right and left direction and which is rotatable upwards at 60 degrees in a vertical direction to a strut including an inclined support curve holding wire rope The method according to claim 1,
Wherein at least one of the rotor blades of different sizes is fastened to the rotary shaft and the upper surface of the rotor produces a rotational force using vertical wind generated when the shaft changes, A double-faced rotor blade, which is configured to rotate at a speed higher than the set wind speed to reduce the cross- The method according to claim 1,
A linear propeller, an inclined propeller, or a curved propeller or a wire rope,

Images