Magnetoelectric generator

FIELD: electricity.

SUBSTANCE: invention relates to electrical engineering, and namely to low-speed electric generators, and it can be used in wind-driven power plants. In magnetoelectric generator the rotor is provided with constant magnets 3, 4, and stator contains two parallel plates 5 and 6, between which annular windings 7 are arranged. The rotor is made of two parallel discs 1 and 2 fixed on shaft, on each of which ring-shaped rows of constant magnets 3, 4 are arranged. Polarity of constant magnets 3, 4 of each row alternates. Herewith poles of constant magnets 3, 4 of one row are faced to opposite poles of constant magnets 3, 4 of the other row. Annular windings 7 of the stator are made as equilateral trapezia with lateral sides 8, 9 located radially in relation to the rotor rotation axis 10 and areas 11, 12 of annular windings at trapezia bases are arc-curved; annular windings 7 are inserted by pairs one into another. Distance ℓ between areas of annular windings at the base of trapezia exceeds width b of ring-shaped row of constant magnets 3, 4. Constant magnets 3, 4 in each ring-shaped row join each other.

EFFECT: increasing power of magnetoelectric generator with preservation of its dimensions.

7 dwg, 1 tbl

 

The invention relates to the field of electrical engineering, namely low-speed electric generators, and can be used in particular in wind turbines.

Known low-speed magneto generator containing an annular series of stator windings on an iron core sheets or extruded iron powder, and a corresponding annular series of permanent magnets of the rotor, in particular a synchronous machine with permanent magnetization for a sinusoidal voltage, the concentrated windings are made and not distributed in the slots, the cores with windings are interleaved with iron core without windings, so that every second iron core has a winding, the number of intervals between the cores is different from the number of poles, the number of intervals between the cores s and the number of poles p follows the expression |s-p|=2·m and s=12·n·m, where n and m are natural numbers, and the machine is designed for three-phase voltage with a series connection of adjacent coils to obtain m such groups per phase, which can be connected in series or parallel, EN 2234788 C2.

The disadvantage of this generator is the low coefficient of performance (efficiency), since the winding in the annular row are located at a considerable distance from each other, and m is the moment of finding the magnets in the gap between the windings EMF in them not induced.

Also known magneto-electric generator, the rotor is equipped with permanent magnets and the stator contains two parallel plates in the form of interconnected disks, between which is placed a winding; a stator has a magnetic circuit in the form of flat rings, RU 2168062.

This solution has the same drawback as described above, the analogue of (EN 2234788 C2): low efficiency for the same reason. In addition, with the passage of permanent magnets of the rotor above the cores of the windings of the stator is mutual attraction of the permanent magnets of the rotor and of the cores of the windings of the stator (the so-called effect of "sticking" of the rotor), making it difficult to start the generator and creates a lot of noise during its operation.

Some of the increase in efficiency of the generator, reducing the starting torque and the noise level in the work process provides a magneto-electric generator, the rotor is equipped with permanent magnets and the stator contains two parallel plates, between which is placed an annular winding, the rotor is constructed of two mounted on a shaft parallel disks, each of which facing each other surfaces placed annular series of permanent magnets located in each row of equidistant, the polarity of the permanent magnets of each row alternates, with poles on the constant magnets of one row facing toward opposite poles of the permanent magnets of the other series, and an annular stator winding is made in the shape of an isosceles trapezoid, the sides of which are located radially relative to the axis of rotation of the rotor, and the ring sections of the windings at the bases of the trapezoid are bent in an arc, an annular winding pairs are inserted into each other, the distance l between the sections of the annular windings at the bases of the trapezoid is larger than the width b of the annular series of permanent magnets, EN 2427067 C1.

This unit is adopted as the prototype of the present invention.

In this magneto generator permanent magnets in each annular row are equidistant relative to each other. The gaps between the permanent magnets in each row correspond to the dimensions of the magnet. As the rotor turns, these empty intervals not induce an electromotive force (EMF) in the windings of the stator, which reduces electrical power generator.

The present invention is to increase the capacity of the magnetoelectric generator while maintaining its size.

According to the invention in a magneto-electric generator, the rotor is equipped with permanent magnets and the stator contains two parallel plates, between which is placed an annular winding, the rotor is constructed of two mounted on a shaft parallel disks, each of which treatment is different to each other surfaces placed annular series of permanent magnets, the polarity of the permanent magnets in each row alternates, with the poles of the permanent magnets of one row facing toward opposite poles of the permanent magnets of the other row, and an annular stator winding is made in the shape of an isosceles trapezoid, the sides of which are located radially relative to the axis 10 of rotation of the rotor, and the ring sections of the windings at the bases of the trapezoid are bent in an arc, an annular winding pairs are inserted into each other, the distance l between the sections of the annular windings at the bases of the trapezoid is larger than the width b of the annular series of permanent magnets, the permanent magnets in each annular row are adjacent to each other; permanent magnets in each annular row are adjacent to each other adjacent the side edges.

The applicant has not identified any technical solution that is identical to the declared that allows to make a conclusion about conformity of the invention, the criterion of "Novelty".

The invention is illustrated by drawings, which shows:

figure 1 is a side view, a variant according to claim 1 claims;

figure 2 - section a-a in figure 1;

figure 3 - side view, a variant according to claim 2;

figure 4 - section b-B in figure 3;

nafig - adjacent annular winding associated with each other, in a perspective view;

figure 6 - connecting the annular winding, type in the plan;

nafig - section b-In figure 6.

The rotor of the magneto generator is made of two parallel disks 1 and 2, mounted on the shaft 10. In a specific example, the disks 1 and 2 are made of electrical steel. On facing each other, the surfaces of the discs 1 and 2 is placed an annular series of permanent magnets 3 and 4, respectively. In each annular row of magnets 3 and 4 are adjacent to each other. In the embodiment of figures 1, 2 permanent magnets 3 and 4 are rectangular in shape and are adjacent to each other angles. In the embodiment of Fig 3, 4 permanent magnets 3 and 4 have the shape of a trapezoid and are adjacent to each other adjacent the side edges. In the embodiment of figures 1, 2 between the permanent magnets 3 and 4 are relatively small triangular gaps in the embodiment of Fig 3, 4 between the magnets 3 and 4, there are very small gaps (0.1-0.2 mm), filled with epoxy compound. The polarity of the permanent magnets 3 and 4 in each row alternates, with the poles of the permanent magnets 3 and 4 of one series facing toward opposite poles of the permanent magnets 3 and 4 another series. The stator of the electrical generator contains two parallel plates 5 and 6, between which is placed an annular winding 7, which is made in the shape of an isosceles trapezoid. The sides 8, 9 of the trapezoid are located radially relative to the longitudinal axis of rotation of the rotor, the parts 11, 12 of the windings 7b bases of the trapezoidal curved in an arc (figure 5). Winding 7 pairs are conjugate to each other: inserted into each other (figure 5, 6), the distance l between the sections 11, 12 of the winding 7 is larger than the width b of the annular series of permanent magnets 3 and 4 (figure 4, 6). Upstream winding 7 mounted on the plate 5, and downstream of the winding 7 on the plate 6.

Magnetoelectric generator works as follows. During rotation of the rotor with the shaft 10 of the magnetic force lines of the permanent magnets 3, 4 intersect the annular coils of the windings 7 and induce in the windings 7, EDS. Since the lateral sides 8, 9 of the annular windings 7 are located between the poles of the magnets 3 and 4 with different polarity, is the induction of mixed EMF at the lateral sides 8, 9 of the windings 7 (arrows figure 6). Thus in each winding 7 flows through the annular electric current. Winding 7, mounted on the plate 5, are connected, similarly interconnected windings 7, mounted on the plate 6.

Since the conductors of the windings 7 are uniformly filling the annular gap between the moving magnets 3, 4 (figure 5), forming a homogeneous environment for moving magnets 3, 4, in this design there are no so-called "sticking" of the rotor, which ultimately ensures quiet and smooth operation of the generator.

Implementation characteristics of the invention only, and what about the fact, that permanent magnets in each annular row are adjacent to each other, provides an important technical result is a more uniform inducing EMF in the windings, and, accordingly, increase of capacity of the generator.

Table 1 shows the values of power prototype of the magnetoelectric generator according to the number of revolutions of the rotor in comparison with the prototype.

The applicant has not identified the sources of information, which would contain information about the impact of the distinctive features of invention technical result achieved, which leads, according to the applicant, according to the invention, the criterion of "Inventive step".

For the manufacture of devices used ordinary materials of construction and plant equipment. This circumstance, according to the applicant, allows to conclude that the invention conforms to the criterion "Industrial applicability".

Table 1
Power, W
The number of revolutions per min
Variant according to claim 1 claimsAriant according to claim 2
The placeholder
12010810948
275238241116
550480483218

1. Magneto-electric generator, the rotor is equipped with permanent magnets and the stator contains two parallel plates, between which is placed an annular winding, the rotor is constructed of two mounted on a shaft parallel disks, each of which facing each other surfaces placed annular series of permanent magnets, the polarity of the permanent magnets in each row alternates, with the poles of the permanent magnets of one row facing toward opposite poles of the permanent magnets of the other row, and an annular stator winding is made in the shape of an isosceles trapezoid, the sides of which are located radially relative to the axis of rotation of the rotor, and the ring sections of the windings at the bases of the trapezoid are bent arc, an annular winding pairs are inserted into each other, the distance l between what customi annular windings at the bases of the trapezoid is larger than the width b of the annular series of permanent magnets, characterized in that the permanent magnets in each annular row are adjacent to each other.

2. Magnetoelectric generator according to claim 1, characterized in that the permanent magnets in each annular row are adjacent to each other adjacent the side edges.



 

Same patents:

FIELD: electricity.

SUBSTANCE: stator electromagnetic systems (EMS) of the electrical machine have a flat-topped shape with open poles facing the open poles of magnetic elements of the rotor, connected in pairs by magnetic bridges placed on the opposite side of the rotor relative the open poles of its magnetic elements. The distance between centres of poles of the stator EMS is equal to the distance between centres of poles of neighbouring magnetic elements of the rotor. The disclosed electrical machine has low material consumption of the structure owing to use of fewer magnetic elements in the stator EMS, simple technique of assembling and dismantling the structure owing to one-sided arrangement of the disc rotor relative the poles of the stator EMS, and the arrangement of the poles of the stator EMS in one plane enables to reduce the air gap between poles of the rotor and the stator, and the length of the middle magnetic line of the stator EMS, which considerably increases energy efficiency of the machine.

EFFECT: low material consumption and high manufacturability and energy efficiency of the structure of electrical machines with a disc rotor.

3 cl, 5 dwg

FIELD: electricity.

SUBSTANCE: magnetoelectric motor comprises a rotor, made of two parallel discs fixed on the shaft, on every of which there is a ring-shaped row of permanent magnets with alternating polarity. Poles of the permanent magnets arranged at one of rotor discs face the opposite poles of the magnets placed on the other disc of the rotor, the stator is placed between discs of the rotor with a gap relative to the shaft and is equipped with circular windings in the form of isosceles trapezoids, sides of which are arranged radially relative to the axis of rotor rotation. According to the invention, the stator is made in the form of two plates parallel to each other, circular windings are placed between plates, sections of circular windings in the bases of trapezoids are bent according to the arc, circular windings of one plate of the stator are inserted into circular windings of the other plate of the stator with formation of modules, besides, the distance l between sections of circular windings in bases of trapezoids exceeds the width b of the ring-shaped row of permanent magnets of the rotor.

EFFECT: increased evenness of torque on a shaft of a magnetoelectric motor and evenness of rotor rotation.

2 cl, 11 dwg

FIELD: electricity.

SUBSTANCE: in an electromagnetic generator a rotor is equipped with permanent magnets, and a stator comprises two parallel plates (5, 6), between which there are circular windings (7), made in the form of isosceles trapezoids, sides (8, 9) of which are arranged radially relative to the axis of rotor rotation, and sections (11, 12) of circular windings (7) in trapezoid bases are bent along the arc. The rotor is made of two parallel discs (1, 2) fixed on a shaft (10), on every of which there are ring-shaped rows of permanent magnets (3, 4) arranged on opposite surfaces, and their polarity in every row alternates. Poles of permanent magnets (3, 4) in a single row face opposite poles of permanent magnets (3, 4) of another row. Circular windings (7) are inserted into each other to form modules, at the same time the distance 6 between sections of circular windings (7) in trapezoid bases exceeds width b of the ring-shaped row of permanent magnets (3, 4). At the same time according to this invention between circular windings (7) there is an additional flat circular winding (13) in the form of an isosceles trapezoid, sides (14) of which are arranged in one plane between sides (8, 9) of other circular windings (7).

EFFECT: provision of the possibility to generate three-phase electric current.

FIELD: electricity.

SUBSTANCE: direct current electromagnetic machine contains a stator frame with permanent magnets installed its inner surface, a rotor with winding and shaft installed in the stator frame suitable for rotation so that a magnetic field of the winding could interact with a magnetic field of permanent magnets made as a block of permanent magnets with central body of soft magnetic material having a polyhedron shape with lateral sides and two sides serving as the bases and at that one base side is an active face of the pole; lateral permanent magnets of hard magnetic material joining lateral sides of the central body so that their magnet field is directed inwards of the central body; a permanent magnet of hard magnetic material joining on of the central body bases with its magnetic field directed towards the active face of the pole, it joins the base of the central body opposite to the pole active face. According to the invention at that at the shaft slip rings are installed and blocks of permanent magnets are installed perpendicular to a plane of the rotor rotation at two opposite sides and directed by the pole active face towards the rotor winding; meanwhile the machine contains closing magnet cores in order to create U-shape at magnetic poles in order to amplify power of the magnetic field and permanent magnets adjoining the central body join the above closing magnet core by the opposite side, at that rotor coils are connected in parallel.

EFFECT: increasing efficiency coefficient of the direct current electromagnetic machine.

6 cl, 1 dwg

FIELD: electricity.

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EFFECT: reduced axial dimensions and material intensity of a generator with simultaneous increase of its operational reliability.

1 dwg

FIELD: electricity.

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EFFECT: reduced magnet resistance in a magnetic circuit, increased intensity of magnetic field, electromotive force induced in stator windings, and a coefficient of generator efficiency.

4 dwg

FIELD: electricity.

SUBSTANCE: low-speed end synchronous generator comprising a rotor arranged in the form of a disc from a non-magnetic material with an excitation system based on permanent magnets and a stator with coils, comprises sections, at the same time in each section a stator is made of one circular magnetic conductor arranged in parallel to the rotor and fixed on stiffening ribs of a casing-free generator frame, coils of stator are placed fully in slots, not protruding beyond limits of a magnetic conductor, in an excitation system the permanent magnets are installed on a rotor disc at its one lateral side in parallel to a magnetic conductor of a stator, besides, rotors of each section are arranged on a single shaft, at the same time to coordinate operation of generator sections, a rotor of each following section is displaced relative to the rotor of the previous section by the following angle: Jmag. = 360° : quantity of permanent magnets of the rotor: quantity of generator sections.

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FIELD: electrical engineering.

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4 dwg

FIELD: electricity.

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EFFECT: improved electromechanical characteristics, increased reliability of operation, increased wear resistance, simplified design, increasing working voltage of the unipolar electric machine several times, expansion of its field of application.

2 dwg

FIELD: electricity.

SUBSTANCE: magnetoelectric motor comprises a rotor, made of two parallel discs fixed on the shaft, on every of which there is a ring-shaped row of permanent magnets with alternating polarity. Poles of the permanent magnets arranged at one of rotor discs face the opposite poles of the magnets placed on the other disc of the rotor, the stator is placed between discs of the rotor with a gap relative to the shaft and is equipped with circular windings in the form of isosceles trapezoids, sides of which are arranged radially relative to the axis of rotor rotation. According to the invention, the stator is made in the form of two plates parallel to each other, circular windings are placed between plates, sections of circular windings in the bases of trapezoids are bent according to the arc, circular windings of one plate of the stator are inserted into circular windings of the other plate of the stator with formation of modules, besides, the distance l between sections of circular windings in bases of trapezoids exceeds the width b of the ring-shaped row of permanent magnets of the rotor.

EFFECT: increased evenness of torque on a shaft of a magnetoelectric motor and evenness of rotor rotation.

2 cl, 11 dwg

FIELD: electricity.

SUBSTANCE: in an electromagnetic generator a rotor is equipped with permanent magnets, and a stator comprises two parallel plates (5, 6), between which there are circular windings (7), made in the form of isosceles trapezoids, sides (8, 9) of which are arranged radially relative to the axis of rotor rotation, and sections (11, 12) of circular windings (7) in trapezoid bases are bent along the arc. The rotor is made of two parallel discs (1, 2) fixed on a shaft (10), on every of which there are ring-shaped rows of permanent magnets (3, 4) arranged on opposite surfaces, and their polarity in every row alternates. Poles of permanent magnets (3, 4) in a single row face opposite poles of permanent magnets (3, 4) of another row. Circular windings (7) are inserted into each other to form modules, at the same time the distance 6 between sections of circular windings (7) in trapezoid bases exceeds width b of the ring-shaped row of permanent magnets (3, 4). At the same time according to this invention between circular windings (7) there is an additional flat circular winding (13) in the form of an isosceles trapezoid, sides (14) of which are arranged in one plane between sides (8, 9) of other circular windings (7).

EFFECT: provision of the possibility to generate three-phase electric current.

FIELD: electricity.

SUBSTANCE: disclosed rotary MHD machine has disc rotors and collectors for inlet and outlet of the working medium, mounted in parallel in a housing. According to the invention, working elements which convert energy of the working medium to mechanical energy and then to electrical energy are disc rotors made from electroconductive porous material which is pervious on at least one end surface and are mounted with possibility of counter-rotation while providing electrical contact with each other on electroconductive areas of the rotor shafts which alternate with insulated areas of shafts in checkered order relative each other. Each pair of rotor discs lying in the same plane is placed between poles of permanent magnets placed in a perpendicular plane to axes of the rotors and is connected in series to only one pair of voltage contacts on shafts so as to allow series-flow of current through each disc of both rotors.

EFFECT: design of a multifunctional magnetohydrodynamic (MHD) machine, high emf generated by the MHD machine.

3 dwg

FIELD: electrical engineering.

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EFFECT: reduction of vibration level for electric motor housing, increase in performance and economical operation.

1 dwg

FIELD: electricity.

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EFFECT: sufficient increase of wear resistance, improvement of electromechanical characteristics and noticeable increase of operating voltage; enlarging application field of unipolar direct current machines.

2 dwg

FIELD: electrical engineering.

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EFFECT: provision for the rotor system rotors strength margin and increasing the proper frequency to a value in excess of rotation rate.

16 cl, 3 dwg

FIELD: electricity.

SUBSTANCE: invention relates to the field of electrical engineering and transport machine building and may be used in development of mechanisms, in which it is necessary to change torque and rotations of an output shaft of an electric motor. According to this invention, in an electric motor a differential gear is used as a converter of transmission ratio, and the gear comprises one input and two outputs, the input of which is connected to a rotor of the electric motor, one of outputs, to which a high torque is sent, is connected with an output shaft, and the second output is connected with the second rotor, which is inductively connected with the rotor of the electric motor, and in case of their mutual rotation, it generates electric energy, and force arising at the same time, by changing which, through variation of inductive connection between rotors, the speed up rate may be controlled, as well as output shaft rotation speed, partially blocking the gear, aims to reduce mutual relative opposite rotation of the electric motor rotor and the second rotor. The second rotor is also connected with a speed-up coupling, which is connected with the body by a response part, and preventing rotation of the second rotor to the side opposite to direction of the electric motor rotor rotation.

EFFECT: multiple increase of electric motor torque in case of speeding.

1 dwg

Electromagnet motor // 2470442

FIELD: electricity.

SUBSTANCE: invention is referred to electric engineering and power engineering, in particular, to electromagnetic motors. The electromagnetic motor comprises a rotor arranged in the form of a shaft installed as capable of rotation of at least two discs installed on the shaft, with permanent magnets arranged along their periphery, a stator comprising electromagnets installed as capable of interaction with permanent magnets, besides, the permanent magnets are arranged in the form of cylinders, planes of ends of which are located in the radial plane of each disc, besides, permanent magnets of the first and second discs face each other with poles, and the stator comprises electromagnets in the form of solenoids without magnetic conductors installed between discs of the rotor, two start-up electromagnets, comprising non-linked magnetic conductors and installed oppositely to a permanent magnet, of any of rotor discs, a contactless induction switch installed on the stator opposite to any of permanent magnets of rotor discs with the possibility of interaction with each of permanent magnets arranged on one of rotary discs of the rotor, at the moment of permanent magnet passing through a zone of sensitivity of a sensor part of the contactless induction switch.

EFFECT: increased capacity of a motor.

8 dwg

Power plant // 2457958

FIELD: transport.

SUBSTANCE: invention relates to automotive power plants. Proposed power plant comprises thermal engine and rotary machine. Rotary machine comprises stator, first and second rotors. One of the latter is coupled with thermal engine. Another rotor is coupled with. Stator incorporates several armatures to generate rotary magnetic field. First rotor comprises some magnetic poles. The latter are made up of multiple magnetic poles arranged with clearance in direction along the circle. Every two adjacent poles feature unlike polarities. Second rotor comprises some elements from magnetically soft material. The latter are arranged between armatures and magnetic poles. Relationship between number of armature poles, magnetic poles and elements from magnetically soft material satisfy the following condition: 1:m:(1+m)/2, where m ≠ 1,0.

EFFECT: higher efficiency.

17 cl, 31 dwg

Electric motor // 2454774

FIELD: electricity.

SUBSTANCE: electric motor (1) consists of the first structure (4) that includes some magnetic poles formed by a certain sum of magnetic poles (4a) organised in certain direction and arranged in such a way that every two neighbouring magnetic poles (4a) have polarity that differ from one another, the second structure (3) that includes some armatures located opposite to the said magnetic poles for generating movable magnetic fields moving in certain direction between the row of armature and row of magnetic poles under the influence of certain sum of armature magnetic poles generated in the armatures (3c - 3e) at electric power supply to them, and the third structure (5) that includes a row of elements from magnetic-soft material formed by certain sum of elements (5a) from magnetic-soft material organised in certain direction with a one gap in relation to the other and arranged in such a way that a row of elements from magnetic-soft material is located between a row of magnetic poles and a row of armatures, number of magnetic poles (4a) and number of elements (5a) from magnetic-soft material is determined by the ratio 1 : m : (1 + m)/2 (m ≠ 1.0).

EFFECT: decrease of dimensions and manufacturing cost of the said electric motor with simultaneous provision of possibility to increase freedom degree at its designing.

6 cl, 19 dwg

FIELD: electricity.

SUBSTANCE: stator electromagnetic systems (EMS) of the electrical machine have a flat-topped shape with open poles facing the open poles of magnetic elements of the rotor, connected in pairs by magnetic bridges placed on the opposite side of the rotor relative the open poles of its magnetic elements. The distance between centres of poles of the stator EMS is equal to the distance between centres of poles of neighbouring magnetic elements of the rotor. The disclosed electrical machine has low material consumption of the structure owing to use of fewer magnetic elements in the stator EMS, simple technique of assembling and dismantling the structure owing to one-sided arrangement of the disc rotor relative the poles of the stator EMS, and the arrangement of the poles of the stator EMS in one plane enables to reduce the air gap between poles of the rotor and the stator, and the length of the middle magnetic line of the stator EMS, which considerably increases energy efficiency of the machine.

EFFECT: low material consumption and high manufacturability and energy efficiency of the structure of electrical machines with a disc rotor.

3 cl, 5 dwg

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