Wind double-rotation electric generator (versions)

FIELD: power engineering.

SUBSTANCE: invention is attributed to power engineering and can be used in wind electric generators. In the first version electric generator is performed with horizontal axis of rotation and contains blades turning rotor and blades turning stator in opposite direction. Stator is performed as separate teeth with winding without yoke, and rotor is performed as two coupled concentric bushings made of material with high magnetic conductivity and located on the outside and the inside of stator. Radially magnetised constant magnets of interleaving polarity are fixed on bushings. Polarity of adjacent magnets interleaves. Opposite to each other constant magnets are located that create concordantly directed magnet flows. On each tooth concentric winding isolated from body is located. Number of poles 2·p, number of pole pairs p, number of stator teeth z, number of coil groups in phase d, number of stator teeth b per one phase group, and number of phases m are connected by formulas: 2·p=d·(b·m±1), z=d·b·m, p/d=k, where: k=1, 1.5, 2, 2.5, 3, 3.5… - positive integer, or number differing from it by 0.5, thereat if k is integer, windings of coil groups in each phase are connected concordantly, and when k differs from integer by 0.5 windings of coil groups in each phase are opposing when m=2, 3, b=1,2,3,4,5…, and if (b·m±1) is even number then d=1, 2, 3, 4, 5…, if (b·m±1) is odd number then d=2, 4, 6, 8…. In the second version of electric generator rotation axis of rotor and stator is made vertical.

EFFECT: increase in specific power in regions with low speeds of wind.

20 cl, 4 dwg

 

Description of the invention

The invention relates to electrical engineering, in particular to electric generators dual rotation and wind turbines.

Known electric machine (options) (application for invention EN 2005134273 AND IPC NC 19/00, author Bulychev AV), comprising a housing, a power source, an anchor mounted on the shaft and having a collector and an electric brush, two magnetic inductor with collectors, mounted on their shafts, and magnetic inductors are located on the ends of the armature opposite to each other. The disadvantage of analogue is that the magnetic flux created by the windings of the excitation (indicated by the presence of collectors), the electrical losses which create additional heat. Application vysokokoertsitivnye permanent magnets makes it easy to avoid additional heat when creating a large magnetic flux.

The closest in technical essence to the present invention (its prototype) is a generator for hydroelectric station [international patent WO 03/036080 A1, the author Aloys Wobben (Germany), the same patent registered in the United States US Pat 7,102,249, IPC F03B 3/10, F03B 3/12, NR 9/04], containing mounted rotatably in the stator; installed with the possibility of rotation of the rotor; first the blade, which act on the rotor and cause the rotation of the rotor in the first direction is the situation; the second vanes, which act on the stator and cause rotation of the stator in a direction opposite to the rotation of the rotor; a housing in which the first blade and the second blade is placed inside the body is placed a water-sealing part and multi-part configuration includes the first part of the housing and the second housing, the first blade is placed in the first part of the body, the second blade is placed in the second part of the housing; the rotor shaft and the stator shaft and water lubricated bearings, which allow you to rotate the shafts. The disadvantage of the prototype is its suitability to work in a liquid environment and the impossibility of its use in other generating sets, for example in the wind. In addition, it has a low magnetic flux of the rotor, which does not allow to achieve high power density.

The aim of the present invention is to increase the specific power of the wind generator. Wind generator, created in accordance with the present invention, is best used in areas with low wind speeds, for example the Central region of Russia. To achieve a high concentration of magnetic flux in the stator teeth is possible with a magnetic system special design where the rotor consists of two inductors - external and internal, and the yoke of the stator is missing.

The technical result of the invention is to provide a wind power generator dual rotation with high power density, high efficiency, the most crude form of dependence of voltage and EMF from time to sinusoidal acceptable vibroacoustic performance and technological coil winding of the stator (armature), in which each coil is located on a separate prong. In the wind power generator dual rotation in the first embodiment of execution, containing mounted for rotation in the stator, mounted with the possibility of rotation of the rotor, the first vanes, which act on the rotor and cause the rotation of the rotor in the first direction, the second vanes, which act on the stator and cause rotation of the stator in a direction opposite to the rotation of the rotor, a rotor shaft, a stator shaft and bearings, which allow you to rotate the shafts, bearing housing, in which the first blade and the second blade is mounted outside the housing, with the aim of increasing the specific power of the stator is made in the form of individual teeth with winding without the yoke, and the rotor is constructed in the form of two bonded between the concentric sleeves from a material with high magnetic permeability, with the outer and inner side of the stator, on the bushings fixed radially magnetized permanent magnets alternating in which arnosti, the polarity of the adjacent permanent magnets alternate, opposite each other are permanent magnets that create according to the aimed magnetic flows on each tooth is concentric winding, insulated from the casing, this technical result is achieved by observing correlations between number of poles 2·R rotor, the number of stator teeth z, the number of coil groups in phase d, the number of stator teeth per phase group b, and the number of phases m:

2·p=d·(b-m±1),

Z=d·b·m,

p/d=k,

where: k=1, 1.5, 2, 2.5, 3, 3.5... is a positive integer, or a number that differs from it by 0.5, while if k is an integer, the winding coil groups within each phase are connected according to, and if k is integer 0.5, winding coil groups within each phase are connected to the counter, to achieve the best energy performance when m is 2, 3, b=1, 2, 3, 4, 5..., and

if (b·m±1) is an even number, then d=1, 2, 3, 4, 5...,

if (b·m±1) is an odd number, then d=2, 4, 6, 8...

In the wind power generator dual rotation on the second version execution, containing mounted for rotation in the stator, mounted with the possibility of rotation of the rotor, the first vanes, which act on the rotor and cause the rotation of the rotor in the first direction, the second vanes, which act on the stator and cause rotation of the stator in such is the pressure, opposite rotation of the rotor, a rotor shaft, a stator shaft and bearings, which allow you to rotate the shafts, bearing housing, the axis of rotation of the stator and rotor is vertical, in the stationary frame is placed above the first shoulder, United in the first wheel, bottom placed second shoulder, United in the second wheel, and between the active part of the wind power generator dual rotation, with the aim of increasing the specific power of the stator is made in the form of individual teeth with winding without the yoke and the rotor is constructed in the form of two connected concentric sleeves from a material with high magnetic permeability, which is external and the inner side of the stator, on the bushings fixed radially magnetized permanent magnets of alternating polarity, the polarity of the adjacent permanent magnets alternate, opposite each other are permanent magnets that create according to the aimed magnetic flows on each tooth is concentric winding, insulated from the casing, this technical result is also achieved by observing correlations between number of poles 2·R rotor, the number of stator teeth z, the number of coil groups in phase d, the number of stator teeth per phase group b, and the number of phases m:

2·p=d·(b·m±1),

Z=d·b·m,

p/d=k,

where: k=1, 1.5, 2, 2.5, 3 3.5... - positive integer, or a number that differs from it by 0.5, while if k is an integer, the winding coil groups within each phase are connected according to, and if k is integer 0.5, winding coil groups within each phase are connected to the counter, to achieve the best energy performance when m is 2, 3, b=1, 2, 3, 4, 5..., and

if (b·m±1) is an even number, then d=1, 2, 3, 4, 5...,

if (b·m±1) is an odd number, then d=2, 4, 6, 8...

The invention is illustrated by figures:

figure 1 - General view of the first variant of wind turbines, containing wind generator dual rotation

figure 2 - General view of the active part of the wind power generator dual rotation

figure 3 is a cross section of the active part of the wind power generator of the double rotation.

4 is a General view of the second variant of wind turbines, containing wind generator dual rotation

Wind generator dual rotation according to the first embodiment has a horizontal axis of rotation and mounted on the rotary top of the mast 1. Orientation in the direction of the air flow is carried out by the regulator 2. In the bearing housing 3 bearings 4 posted by the first shaft 5 and the second shaft 6. The first shaft 5, driven in rotation by the first blades 7, rotates the rotor 8. The second shaft 6 is driven in rotation by the second blades 9, rotates the CE is dechnik stator 10 is placed on the winding 11. The magnetic flux of the rotor 8 create permanent magnets 12, placed on the sides of the coils of the rotor 8, facing the stator core 10. The polarity of the permanent magnets 12 in the outer and inner coils of the rotor 8 alternates. Opposite each other are arranged magnets 12, creating a consonant magnetic flux. The stator winding 11 consists of a coil group 13, each of which, in turn, consists of coils wound on the stator teeth. The coils are connected in series oppositely, and the coil groups in series or in parallel.

If the wind thanks to the stabilizer 2 wind generator is oriented in the direction of air flow. The blades 7 and 9 rotate in opposite directions with speeds n1and n2, rotate the rotor 8 and the stator core 10 with the winding 11 in different directions, allowing to achieve a high linear velocity of the stator relative to the rotor. The magnetic flux of the rotor 8 crosses the coils of the stator winding 11, the winding 11 is induced EMF. On the contact ring 14 there is tension, which is removed and passed on to the consumer by the brushes 15. The voltage from the stator can also be removed using a rotating transformer. In this case, the total efficiency of the wind generator dual rotation decreases, but its reliability is increased for the odd refusal of the brush-contact node.

Wind generator dual rotation according to the second variant has a vertical axis of rotation and mounted in the gap between the upper propeller containing vanes 7, and the lower propeller containing blades 9, which are fixed for rotation in a common stationary frame 17, which provides the alignment of the rotation shafts 5 and 6. Propeller containing vanes 7 and 9, due to its geometry are in working position in either direction of the wind. Top wind wheel rotates the first shaft 5 of the rotor 8 in the same direction with the rotational speed of n1. Lower wind wheel rotates the second shaft 6 of the stator core 10 is placed on the winding 11 in the opposite direction from speed n2. Therefore achieves a higher linear speed of movement of the rotor relative to the stator, which leads to higher specific electric power. The design of the active part of the wind power generator of the double rotation is absolutely similar to that described above for the first variant. The creation of magnetic flux of the permanent magnet 12, the generation of EMF in the stator winding 11 and removing the voltage from the contact rings 14 or by means of a rotating transformer is similar to that described above for the first variant.

Figure 3 shows a sketch of the cross section of the active activetravel electric double rotation and the circuit of the stator winding for the option with the number of teeth of the stator core 9 z=24, hosting a three-phase winding 11 connected in star, where A, B, and C are the names of the phases, the phase consists of two coil groups 13 connected in series. The winding 11 can also be connected in a triangle. The number of coils in the group b=4. The number of rotor poles 2P=26, the rotor poles are formed by using twenty-six pairs of permanent magnets 12 of alternating polarity attached to the yokes of the rotor 8. Adjacent coils in the coil group must be connected to a counter, as they are mostly under the poles of the rotor opposite polarity. Coil in coil groups and coil group of the phases are connected in all phases equally. The yoke of the rotor 8 to be manufactured by machining of castings or forgings structural steel with high magnetic permeability, such as steel 10. At low nominal frequency of rotation n1and n2(figure 1) and the associated frequency of the alternating magnetization of the stator 10, less 10÷15 Hz, the teeth of the stator 10 can be manufactured similarly to the yokes of the rotor 8. For large values of the identified frequency of the magnetization reversal of the teeth of the stator must be laminated stack of electrical steel sheets, the direction of blending is perpendicular to the axis of rotation of the machine. With the aim of reducing the cost of the stator teeth and yoke can be made of powder mage is atomarnogo material, for example, by pressing.

Coil winding 11 of the stator rewound from the winding wire, for example, copper enamel wire, electrically insulating frames or subcool insulation on each tooth of the stator 10. To reduce electric ("ohmic") losses reel group or phase may generally nakativaetsa continuous wire. For simplification and automation of the winding coils of the winding 11, the teeth are made separately on the teeth is wound around the winding 11, and then the teeth fasten the reference stator ring 16, which is mounted on the shaft 6. After wrapping papers to increase the electric strength of insulation and increase its reliability is winding impregnation varnish or compound.

When d>1 coil group of the same phase winding can be connected in series or in parallel. When d is an integer even number of coil groups of the same phase winding may form parallel branches, which in turn can be connected in series (mixed compound). Coil group phase must be interconnected so that the vectors of the induced EMF in them, geometrically combine to form a maximum total EMF phase.

At low wind speeds it is important to "start" generator - how to overcome the PTO is t resistance. When applying a variable regulated voltage on the stator winding it starts and operates in motor mode.

1. Wind generator dual rotation, containing mounted for rotation in the stator, mounted with the possibility of rotation of the rotor, the first vanes, which act on the rotor and cause the rotation of the rotor in the first direction, the second vanes, which act on the stator and cause rotation of the stator in a direction opposite to the rotation of the rotor, a rotor shaft, a stator shaft and bearings, which allow you to rotate the shafts, bearing housing, wherein the first blades and the second blades arranged outside the housing to increase the power density of the stator is made in the form of individual teeth with winding without the yoke, and a rotor made in the form of two bonded between the concentric sleeves from a material with high magnetic permeability, with the outer and inner side of the stator, on the bushings fixed radially magnetized permanent magnets of alternating polarity, the polarity of the adjacent permanent magnets - alternate, opposite each other are permanent magnets that create according to the aimed magnetic flows on each tooth is concentric winding, isolated from the body, number of poles 2·R, the number of pairs of poles p, the number subs is in the stator z and the number of coil groups in phase d, the number of stator teeth b per phase group, and the number of phases m are related by ratios:
2·p=d·(b·m±1),
z=d·b·m,
p/d=k,
where k=1, 1,5, 2, 2,5, 3, 3,5... - positive integer or number, differing from it by 0.5, if k is an integer, the winding coil groups within each phase are connected in accordance with, and when k is an integer of 0.5 winding coil groups within each phase are connected to the counter to achieve the best energy performance for m=2, 3, b=1, 2, 3, 4, 5..., and
if (b·m±1) is an even number, then d=1, 2, 3, 4, 5...,
if (b·m±1) is an odd number, then d=2, 4, 6, 8....

2. Wind generator dual rotation according to claim 1, characterized in that the voltage from the stator removed using slip rings and brushes.

3. Wind generator dual rotation according to claim 1, characterized in that the voltage from the stator is removed using a rotating transformer.

4. Wind generator dual rotation according to claim 2 or 3, characterized in that the housing is mounted on a swivel top-mast.

5. Wind generator dual rotation according to claim 4, characterized in that the orientation in the direction of the air flow is carried out by means of the stabilizer, mounted on a swivel top-mast.

6. Wind generator dual rotation according to claim 1, characterized in that when d>1 coil group of the same f the s winding are connected in series.

7. Wind generator dual rotation according to claim 1, characterized in that when d>1 coil group of the same phase winding connected in parallel.

8. Wind generator dual rotation according to claim 1, characterized in that when d=4, 6, 8, 10... coil group of the same phase winding are connected in series-parallel.

9. Wind generator dual rotation according to claim 1, characterized in that the phase winding when m=3 are connected in star.

10. Wind generator dual rotation according to claim 1, characterized in that the phase winding when m=3 are connected in a triangle.

11. Wind generator dual rotation according to claim 1, characterized in that when the AC regulated voltage on the stator winding it operates in a motoring mode.

12. Wind generator dual rotation, containing mounted for rotation in the stator, mounted with the possibility of rotation of the rotor, the first vanes, which act on the rotor and cause the rotation of the rotor in the first direction, the second vanes, which act on the stator and cause rotation of the stator in a direction opposite to the rotation of the rotor, a rotor shaft, a stator shaft and bearings, which allow you to rotate the shafts, bearing housing, wherein the rotation axis is vertical, in the stationary frame is placed on top of the PE the new blades, United in the first wheel, bottom placed second shoulder, United in the second wheel, and between the active part of the wind power generator dual rotation, with the aim of increasing the specific power of the stator is made in the form of individual teeth with winding without the yoke and the rotor is constructed in the form of two connected concentric sleeves from a material with high magnetic permeability, with the outer and inner side of the stator, on the bushings fixed radially magnetized permanent magnets of alternating polarity, the polarity of the adjacent permanent magnets alternate, opposite each other are permanent magnets that create according to the aimed magnetic flows on each tooth is concentric winding, isolated from the body, number of poles 2·R, the number of pairs of poles p, the number of stator teeth z and the number of coil groups in phase d, the number of stator teeth b per phase group, and the number of phases m are related by ratios:
2·p=d·(b·m±1),
z=d·b·m,
p/d=k,
where k=1, 1,5, 2, 2,5, 3, 3,5... - positive integer, or a number that differs from it by 0.5, if k is an integer, the winding coil groups within each phase are connected in accordance with, and when k is an integer of 0.5, the winding coil groups within each phase are connected to the counter, to achieve the best energy is practical indicators for m=2, 3, b=1, 2, 3, 4, 5..., and
if (b·m±1) is an even number, then d=1, 2, 3, 4, 5...,
if (b·m±1) is an odd number, then d=2, 4, 6, 8....

13. Wind generator dual rotation 12, characterized in that the voltage from the stator removed using slip rings and brushes.

14. Wind generator dual rotation 12, characterized in that the voltage from the stator is removed using a rotating transformer.

15. Wind generator dual rotation 12, characterized in that when d>1 coil group of the same phase winding are connected in series.

16. Wind generator dual rotation 12, characterized in that when d>1 coil group of the same phase winding connected in parallel.

17. Wind generator dual rotation 12, characterized in that when d=4, 6, 8, 10... coil group of the same phase winding are connected in series-parallel.

18. Wind generator dual rotation 12, characterized in that the phase winding when m=3 are connected in star.

19. Wind generator dual rotation 12, characterized in that the phase winding when m=3 are connected in a triangle.

20. Wind generator dual rotation 12, wherein when the AC regulated voltage on the stator winding it works in bigatello mode.



 

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3 cl, 2 dwg

FIELD: engines and pumps.

SUBSTANCE: invention is related to hydropower engineering, in particular, to power units actuated by flow of flowing medium, and may be used for transformation of flowing medium flow energy, for instance, of river flow, into electric energy. River hydraulic unit for utilisation of flowing medium flow comprises bearing frame with active turbine arranged in the form of infinite conveyor installed across flow of flowing medium and having two shafts embraced with flexible traction element with blades arranged at the angle to flow direction, sliding supports that interact with guides of bearing frame, on which electric generator is installed, being kinematically joined to one of infinite conveyor shafts. Hydraulic unit is equipped with additional flexible traction element embracing shafts installed along flow and transverse support elements that join together flexible traction elements. Sliding supports are installed on flexible traction elements. Blades are fixed on transverse support elements.

EFFECT: increased total working surface of blades affected by flow of flowing medium, reduced number of sliding joints and simplified design, which makes it possible to increase capacity of power unit.

2 dwg

FIELD: power engineering.

SUBSTANCE: invention is attributed to power engineering and can be used in wind electric generators. In the first version electric generator is performed with horizontal axis of rotation and contains blades turning rotor and blades turning stator in opposite direction. Stator is performed as separate teeth with winding without yoke, and rotor is performed as two coupled concentric bushings made of material with high magnetic conductivity and located on the outside and the inside of stator. Radially magnetised constant magnets of interleaving polarity are fixed on bushings. Polarity of adjacent magnets interleaves. Opposite to each other constant magnets are located that create concordantly directed magnet flows. On each tooth concentric winding isolated from body is located. Number of poles 2·p, number of pole pairs p, number of stator teeth z, number of coil groups in phase d, number of stator teeth b per one phase group, and number of phases m are connected by formulas: 2·p=d·(b·m±1), z=d·b·m, p/d=k, where: k=1, 1.5, 2, 2.5, 3, 3.5… - positive integer, or number differing from it by 0.5, thereat if k is integer, windings of coil groups in each phase are connected concordantly, and when k differs from integer by 0.5 windings of coil groups in each phase are opposing when m=2, 3, b=1,2,3,4,5…, and if (b·m±1) is even number then d=1, 2, 3, 4, 5…, if (b·m±1) is odd number then d=2, 4, 6, 8…. In the second version of electric generator rotation axis of rotor and stator is made vertical.

EFFECT: increase in specific power in regions with low speeds of wind.

20 cl, 4 dwg

FIELD: power engineering.

SUBSTANCE: river hydraulic unit brought into operation with river flow consists of a load-carrying frame with an action turbine made in the form of an endless conveyor located across the flow and having two shafts enveloped with a flexible towing element with blades installed with the possibility of being turned and fixed, and on the load-carrying frame there located is electric generator kinematically connected to one of shafts of endless conveyor. Hydraulic unit is equipped with an additional flexible towing element enveloping the shafts located along river flow, and with transverse supports connecting flexible towing elements to each other. Blades are installed on the axes fixed on transverse supports. Between endless conveyor's strings there installed is a river flow divider.

EFFECT: increase of total working surface of blades, on which the flowing medium acts, decrease of resistance to movement of blades and increase of power unit output.

2 dwg

FIELD: electricity.

SUBSTANCE: water flow energy converter into electrical energy consists of a body with open flow windows being provided in the lower part of the body during low-tide and in the upper part during high-tide. The converter also includes endless band inside the body, which is reeled on drums, operating blades in the form of double-lever plates. The operating blades are bent relative to each other and provided with hinge in the point of bending. They are installed on the external side of endless band along the whole its length. The stabilisers are installed on drum shafts outside the body boards. The said stabilisers pull down endless band with blades with regard to the body bottom to activate part of the blades in the upper part of endless band during high-tide. Alternatively, the stabilisers lift the endless band to activate part of the blades in the lower part of the endless band during low-tide. There are vertical slots made in the body to adjust height of lifting or pulling down. The movable gate is attached to the body end side and directs flow to the upper part of endless band during high-tide. The movable gate takes horizontal position to allow free flowing during low-tide.

EFFECT: improved effectiveness of device, simple structure and operation, wade range of application.

3 dwg

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