KR20150118717A - Ring-type generator module and Wind power generator using the same - Google Patents

Abstract

The present invention relates to a toroidal generator module which is configured to have a toroidal rotor rotate by a ball bearing while a toroidal stator in which coils are embedded and a toroidal rotor to which permanent magnets are coupled are inserted into and couped to the module, and to a wind power generator using the same. The toroidal generator module according to the present invention comprises: a toroidal stator in which a plurality of coils are embedded; a rotor wherein flanges are formed on the front end and the rear end of a toroidal member having a smaller outer diameter than an inner diameter of the stator toward the outside, and the toroidal member is inserted into the inner diameter of the stator to prevent the toroidal member from being separated by the flanges; a plurality of permanent magnets mounted on one side or both sides of a surface that the flange faces; and a friction reduction means disposed between the stator and the rotor so that the rotor can rotate.

Description

Ring-type power generation module and a wind power generator using the same

The present invention relates to a ring-type power generation module configured to rotate a rotor in a state where a ring-type stator having coils embedded therein and a ring-type rotor coupled with a permanent magnet are fitted and fitted, and a wind power generator using the same.

A wind turbine generator is a device that converts the kinetic energy of wind into mechanical energy through electrical energy. A typical wind turbine includes a blade that converts wind energy into rotational power, a hub that connects multiple blades, a gearbox that converts low-speed blade rotations to high-speed rotations for generators, A generator for converting the rotational force into electricity, and various control systems.

Conventional wind power generators are divided into AFPM (Axial-Flux Permanent Magnet) generators and RFPM (Radial Flux Permanent Magnet) generators.

The AFPM generator is an axial magnetic permanent magnet generator, and is now widely used in small wind turbines and hybrid wind turbines. This is a general form in which permanent magnets are placed on both sides and a coil is arranged in the middle. Most of them are Core less AFPM generators which do not use iron cores to minimize cogging torque. Because it is coreless, the starting wind speed is low, but the efficiency of the generator itself is low and its efficiency is low at 5 ~ 7m / sec, which is the commercial wind speed.

The RFPM generator is a generator with the same structure as a permanent magnet motor. It has good output and high efficiency, so it is widely used in places where the satellites are abundant. Also, it can be applied to hybrid streetlight because it can output more than 20% of the rated output even at commercial wind velocity of 5 ~ 7m / sec. However, there is a disadvantage that the starting wind speed is high due to high cogging torque.

In summary, the AFPM generator can start early even at low wind speeds, but because there is no core, the generator output and efficiency are low, resulting in a large size, which increases manufacturing costs. Also, it is not suitable for large capacity wind turbine because of difficulty in enlargement. In addition, technologies have been developed to minimize the cogging torque of RFPM generators, but they are not significantly reducing cogging torque.

In addition, noise and vibration problems caused by the rotation of the blades, problems of the space restriction due to the enlargement of the wind power generators, heat generation and corrosion problems of the blades, and maintenance and maintenance problems thereof have been common problems of conventional wind power generators.

1. Prior art regarding various types of wind power generators (1) Patent No. 10-1141943 entitled "Wind Power Generation System & (2) Patent No. 10-0895038 "Blade structure of turbine for vertical axis wind power generation system & (3) Patent document 10-2009-0112469 "Variable wind speed turbine type combined wind power generation device and method" (4) Patent No. 10-0893299 "Vertical axis type wind power generation device" (5) "Wind power generator implementing a multi-cycloidal curved system with eccentric shaft" (6) Patent document 10-2011-0081406 "Rotor for wind turbine generator and wind turbine generator using same" (7) Patent No. 10-1301547 entitled " (8) Patent No. 10-1310122 " (9) Open Patent 10-2012-0033940 "Vertical axis wind power generation device & (10) Patent No. 10-1230231 "Vertical axis wind power generation device" (11) Patent document 10-2013-0016577 "Wind power generation device having a power generation structure in which a vehicle's ultrator is recycled" (12) Patent Document 10-1156928 "Low wind speed wind power generation device and low wind speed wind power generation system using the same" (13) Patent No. 10-1298910 "Chimney type wind power generator" (14) Open utility model 20-2013-0001145 "Horizontal wind power generation device" 2. Prior art related to various methods of blowing air (1) Patent No. 10-0724045 "Magnus type wind power generation device" (2) Japanese Laid-Open Patent Publication No. 10-2007-0026362 "Wind power generation device and its active vibration damping method and windmill tower" (3) Patent No. 10-0942831 entitled " (4) Patent No. 10-1092711 "Blade type wind power generation system having booster blade & (5) Patent No. 10-0946347 "Flannel radial turbine blade wind power generation system" (6) Patent No. 10-1223787 "Vertical axis wind power generation device & (7) Patent Publication 10-2011-0051397 "Turbine rotor for vertical axis wind power generation and vertical axis wind power generation system" (8) Patent document 10-1180832 "Tilt-type rotary blade device for vertical wind power generation" (9) Patent No. 10-0981839 entitled "Vertical Axial Turbine Blade for Wind Power Generation & (10) Patent No. 10-1089129 "Wind power generator with expandable wings" (11) Patent Application No. 10-1266783 entitled " Vertical Wind Power System for Wind Power Generation " (12) Patent No. 10-1068443 "Rotor for wind power generation" (13) Patent No. 10-1155023 "Wind power generator having a blade capable of controlling the area" (14) Patent No. 10-1198580 "Wind turbine blades and wind turbine generators" (15) Patent Document 10-0996130 "Apparatus for controlling the inclination angle of a blade for a wind power generator" (16) Patent No. 10-1079773 "Wind turbine generator with annular blades" (17) Patent No. 10-1056932 entitled " (18) Patent No. 10-1226937 "Blade modularized wind power generation system" (19) "Energy extraction device with at least one blade bank" (20) Published patent application 10-2012-0126747 "Wind power generation system & (21) Patent No. 10-1281047 "Folding blade device for wind power generator" (22) " Patent No. 10-1306754 "Wind power generator with wind guide & (23) Patent No. 10-1124854 "Vertical shaft type wind turbine generator" (24) Patent document 10-2013-0087839 "Variable blade for wind power generator" (25) Registered utility model 20-0459129 "Wind blower for horizontal axis wind power generator" 3. Prior art regarding AFPM generator or RFPM generator (1) EP-A-10-0870738 "APFC core multi-generator & (2) Registered Patent No. 10-1293537 "Small Hydro Power Generation Device Using an APP Generator" (3) Small hydroelectric power generation system using an APP generator "Armature coil unit, method of manufacturing the same, and AFPM generator having the same" (4) Structure of Vertical-Axis Wind Turbine Employing Permanent Magnet Generator of Externally-Type Method [ (5) Patent No. 10-1265825 "Dual stator RFPM generator" (6) Registered Patent No. 10-0956767 "EPP and RFM composite motor and generator"

The present invention allows the rotor to rotate without rotating the shaft, simplifies and miniaturizes the installation structure, and thereby efficiently generates electric power. The present invention can be applied to vertical and horizontal wind power generators according to the position and shape of blades And it is an object of the present invention to provide a ring-type power generation module and a wind power generator using the ring-type power generation module, which can solve problems of installation place due to enlargement of a wind power generator, noise and vibration problems caused by rotation of a large blade, and the like.

The present invention is characterized by " a ring-shaped stator having a plurality of coils embedded therein; Wherein the flange is formed outside the front and rear ends of the ring-shaped member having an outer diameter smaller than the inner diameter of the stator and the ring-shaped member is fitted in the inner diameter of the stator, ); A plurality of permanent magnets coupled to one or both sides of the opposite faces of the flange; And a friction reducing means provided between the stator and the rotor so that the rotor can rotate; And a ring-shaped power generation module.

The stator is a structure including a coil, and serves to fix and support the position of the coil. Since the stator is exposed to the outside air, the heat generated by the coil is dissipated directly into the air, which is easier to dissipate than the structure of other complex generators (AFPM, RFPM). The entire or a part of the flange of the rotor may be made of a steel material so that the magnetic force of the permanent magnet is strengthened, so that the power generation efficiency can be increased.

Further, the present invention is characterized in that " the above-mentioned ring-type power generation module; One or a plurality of coupled blades inside the inner circumferential surface of the ring-shaped power module rotor; A strut supporting the stator of the ring-shaped power module; And a vertical wind power generator configured to receive the airflow of the blades and configured to rotate the rotor of the ring-shaped power generation module.

Further, the present invention is characterized in that " the above-mentioned ring-type power generation module; One or more blades coupled to the outer surface of the ring-shaped power module rotor flange; And a support coupled to the stator of the ring-shaped power module; And a horizontal wind power generator configured to receive the airflow of the blade to rotate the rotor of the ring-shaped power generation module.

That is, the present invention can be applied to a horizontal wind power generator or a vertical wind power generator with different positions and shapes of blades when using the ring-type power generation module.

In a conventional wind turbine in which the blades are coupled to the outside of the rotating shaft, as the diameter of the blades increases, the momentum acting on the central axis becomes larger, so that the rotational force is largely transmitted. As the blade becomes larger, a structure capable of supporting the weight of the blade is required, so that the tip of the blade does not make it wide even though it receives a large force. Also, as the blade becomes larger, more vibration and noise are generated. In addition, a huge blade with a large rotational speed rotates at a high speed, which poses a great deal of risk when an accident occurs.

On the other hand, according to the present invention, by arranging the blades so as to face inward from the rim of the ring-shaped rotor in which the rotational momentum is strong, the force transmitted to the central axis can be made large while the blades can be made small. In addition, blades oriented inward from the rim can be configured in a wide variety of shapes so that blades of shapes that were not previously possible can be applied. Accordingly, when compared with the conventional wind turbine, a larger power generation amount can be obtained.

The effects of the present invention are summarized as follows.

1. The structure is simple and easy to assemble because it is configured to rotate the rotor by friction reducing means such as bearings (ball bearings, roller bearings, etc.), lubricating oil and magnetic levitation means without rotating shaft.

2. Since the rotor with the coil is exposed to the outside air, the heat generated in the coil easily dissipates.

3. The blade can be made small and the power generation is big compared with the area.

4. Vertical and horizontal wind power generators can be configured according to the position and shape of the blades to be connected to the ring-type power generation module of the same structure.

5. By increasing the size of the conventional ring, the contact surface of the permanent magnet coupled to the coil embedded in the stator becomes wider, so that when the generator of the same output is manufactured, the thickness of the coil and the magnet is reduced, Shape) can be made.

6. Since the blade of the rotor is not connected to the center shaft but is coupled to the inside of the rim of the rotor so as to face inward, it is possible to reduce the size of the blade as well as the weight of the portion supporting the blade.

FIG. 1 shows an embodiment of a ring-shaped heat generating module provided by the present invention.
[Fig. 2] shows a stator of a ring-shaped heat generating module.
[Fig. 3] shows the rotor of the ring-shaped heat generating module.
FIG. 4 illustrates embodiments of a vertical wind power generator using a ring heat generating module.
FIG. 5 illustrates embodiments of a horizontal wind power generator using a ring heat generating module.

The present invention is characterized by " a ring-shaped stator having a plurality of coils embedded therein; A rotor having a flange formed outside the front and rear ends of the ring-shaped member having an outer diameter smaller than the inner diameter of the stator and not to be separated by the front and rear flanges in a state where the outer diameter is fitted in the inner diameter of the stator; A plurality of permanent magnets coupled to one or both sides of the opposite faces of the flange; And a friction reducing means provided between the stator and the rotor so that the rotor can rotate; And a ring-shaped power generation module.

The friction reducing means includes a ball bearing that is mounted on a rail provided along the front and rear edges of the outer circumferential surface of the rotor and is provided so as to roll in place by an external force and an inner contact Quot; and " consisting of a belt " Accordingly, the rotor can be smoothly rotated without being damaged by direct friction between the rotor and the stator.

The friction reducing means may be a plurality of roller bearings provided in a direction crossing the outer circumferential surface of the rotor and provided so as to rotate in the axial direction by an external force in contact with the inner circumferential surface of the stator. The roller bearing can disperse the load of the rotor.

As the friction reducing means, there is applied a magnetic levitation means in which a band-like magnet of the same polarity is coupled to the outer circumferential surface of the rotor and the inner circumferential surface of the stator so that the rotor and the stator are not in close contact with each other and a clearance is formed You may. In this case, the rotor can be rotated without friction in a state where the outer diameter of the rotor is away from the inner diameter of the stator due to the repulsive force of the band-shaped stool of the same pole.

As the friction reducing means, "lubricating oil coated on at least one of the outer circumferential surface of the rotor or the inner circumferential surface of the stator" may be applied.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings, in which ball bearings are provided as the friction reducing means. It should be noted that the following embodiments are provided so that those skilled in the art will be able to fully understand the present invention, and thus the scope of the present invention is not limited to the embodiments described below.

The accompanying drawings illustrate an embodiment of a ring-shaped power generation module configured with a stator 110, a rotor 120, a permanent magnet 130, and a ball bearing 140.

The stator 110 is a ring-like member in which a plurality of coils 111 are embedded as shown in FIG. In the stator 110, a plurality of cushions for inserting and installing the coil 111 may be formed.

3, the rotor 120 includes a ring-shaped member 121 having an outer diameter corresponding to the inner diameter of the stator 110 and a flange (not shown) formed on the outer side of the front and rear ends of the ring- 122a, 122b.

A plurality of permanent magnets 130 are coupled to one side or both sides of the opposite faces of the flanges 122a and 122b. As shown in FIG. 1, the inner surface of the stator 110 is disposed on the outer side of the ring-shaped member 121 of the rotor 120, So that the rotor 120 can be rotated by the ball bearing 140. That is, the blades coupled to the rotor 120 are configured such that the rotor rotates with respect to the center of gravity by the wind force due to the wind.

As the rotor 120 rotates, the coil 111 rotates in a magnetic field formed by the permanent magnet 130 to generate an induced electromotive force. As the induction electromotive force is generated, the current flowing through the coil 111 generates heat due to the electrical resistance of the coil 111. In the conventional wind power generator, damage caused by this heat also became a serious problem. However, in the ring-type power generation module 100 provided by the present invention, the stator 110 having the coils embedded therein is exposed to the outside air, so that the heat is rapidly dissipated.

The entirety of the flanges 122a and 122b of the rotor 120 may be made of iron or the magnetic force of the permanent magnets 130 may be strengthened by a steel material to which the permanent magnets 130 are coupled, The efficiency can be increased.

The ball bearing 140 is applied as an example of the friction reducing means. The ball bearing 140 should be installed in a structure that minimizes the friction that is hampered by the rotational motion of the rotor 110. The ball bearings 140 may be mounted on the rails 123 provided along the front and rear edges of the outer circumferential surface of the ring-shaped member 121 of the rotor 120 so as to be rolled in place by an external force. In this case, if the ball bearing 140 directly contacts the inner circumferential surface of the stator, the rotation of the rotor may be interrupted by the friction, and the stator 110 may be damaged due to long-term friction. The insulator 112 contacting the ball bearings 140 is provided at the front and rear edges of the inner circumferential surface of the stator 110 so that the rotor 120 and the stator 110 can be rotated without any damage due to direct friction between them. 120 can smoothly rotate.

In addition, a roller bearing or a magnetic levitation means as described above can be applied as the friction reducing means. A method of reducing friction by a method of applying lubricating oil to the inner circumferential surface of the stator or the outer circumferential surface of the rotor ring-shaped member by a simple method may be considered.

The ring-type power generation module 100 as described above can be applied to both the vertical wind turbine generator and the horizontal wind turbine generator.

The vertical wind power generator includes the ring-type power generation module 100 as shown in FIG. 4; One or more blades 200a, 200b, and 200c coupled to the inside of the inner circumferential surface of the ring-shaped member 121 of the rotor 120 of the ring-shaped power generation module 100; A strut 300 for supporting the stator 110 of the ring-shaped power generation module 100; . Accordingly, the blades 200a, 200b, and 200c receive the airflow, and the rotor 120 of the ring-shaped power generation module 100 rotates.

The vertical wind power generator includes the ring-type power generation module 100 as shown in FIG. 5; The ring-type power generation module 100 includes one or more blades 200d coupled to the outer surface of the rotor 120 flanges 122a and 122b; And a support 400 coupled to the stator 110 of the ring-type power generation module 100; . Accordingly, the blade (200d) receives an air current and rotates the rotor (120) of the ring-shaped power generation module (100). In this case, the shape of the blade 200d may be a Darius type in which 2 to 3 circular arc blades are combined, a Jyoming roping type in which 2 to 4 vertically symmetric circular blades are combined, a Sabonius type in which half- Can be applied.

Further, in order to smoothly mount the support table 400, the flanges of both sides of the rotor are configured to have different areas, and the flange of a narrow area is arranged to be downward (downward) so that the support is coupled to the relatively wide exposed stator .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. It is therefore intended that the appended claims cover such modifications and variations as fall within the true scope of the invention.

100: Ring-type power generation module
110: stator 111: coil 112: inscribed band
120: rotor 121: ring-shaped member 122a, 122b: flange
123: rail 130: permanent magnet 140: ball bearing
200a, 200b, 200c, 200d:
300: support 400: support

Claims (9)

A ring-shaped stator in which a plurality of coils are embedded;
Wherein the flange is formed outside the front and rear ends of the ring-shaped member having an outer diameter smaller than the inner diameter of the stator and the ring-shaped member is fitted in the inner diameter of the stator, );
A plurality of permanent magnets coupled to one or both sides of the opposite faces of the flange; And
A friction reducing means provided between the stator and the rotor so that the rotor can rotate; And a ring-shaped power generating module.
The method of claim 1,
Wherein the stator is made of an epoxy resin.
The method of claim 1,
Wherein all or a part of the flange of the rotor is made of a steel material.
The method of claim 1,
The friction reducing means includes ball bearings mounted on rails provided along the front and rear edges of the outer circumferential surface of the rotor ring-shaped member, respectively, so as to roll in place by an external force, Wherein the ring-shaped power generation module comprises:
The method of claim 1,
Wherein the friction reducing means is a plurality of roller bearings provided in a direction transverse to the outer circumferential surface of the rotor ring member and rotatable in an axial direction by an external force in a state of being in contact with the inner circumferential surface of the stator.
The method of claim 1,
Wherein the friction reducing means is a magnetic levitation means for allowing strip-shaped magnets of the same polarity to be coupled to the outer circumferential surface of the rotor ring-shaped member and the inner circumferential surface of the stator to form a clearance without the rotor and the stator being in close contact with each other Ring type power generation module.
The method of claim 1,
Wherein the friction reducing means is lubricating oil applied to at least one of an outer circumferential surface of the rotor ring-shaped member and an inner circumferential surface of the stator.
A ring-type power generation module according to any one of claims 1 to 7;
One or a plurality of coupled blades inside the inner circumferential surface of the ring-shaped power generating module rotor ring-shaped member; And
A strut supporting the stator of the ring-shaped power module; , ≪ / RTI >
Wherein the blades are configured to receive airflow and rotate the rotor of the ring-shaped power generation module.
A ring-type power generation module according to any one of claims 1 to 7;
One or more blades coupled to the outer surface of the ring-shaped power module rotor flange; And
A support coupled to a stator of the ring-shaped power generation module; , ≪ / RTI >
And the rotor of the ring-shaped power generation module is rotated by the blade.

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