Magnetoelectric generator |
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IPC classes for russian patent Magnetoelectric generator (RU 2521048):
      
 Magnetoelectric engine / 2515999
In a magnetoelectric engine rotor contains a disc fixed at a shaft whereat a ring-shaped line of permanent magnets with alternating polarity is mounted. A stator contains two parallel plates and the stator windings are placed between them. The stator plates are equipped with cores of electric steel, at which the stator windings are placed. The cores are made as two rings and there are protrusions at their surfaces faced to each other. Width of the protrusion B is equal to half of the permanent magnet C width. Protrusions of one core are off-centred in regard to protrusions of the other core to the half of the permanent magnet C width. The rotor disc is placed between the cores of the stator windings.
 Magnetoelectric generator / 2515998
In a magnetoelectric generator a rotor contains a disc fixed at a shaft whereat a ring-shaped line of permanent magnets with alternating polarity is mounted. The magnets are regularly spaced in regard to each other. A stator contains two parallel plates and the stator windings are placed between them at cores of electric steel, which are fixed at the stator plates. The cores are made as two rings and there are protrusions at their surfaces faced to each other. Width of the protrusion B is equal to half of the permanent magnet C width. Protrusions of one core are off-centred in regard to protrusions of the other core to the half of the permanent magnet C width.
 Magnetoelectric generator / 2506688
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.
 Electrical machine with disc rotor / 2505910
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.
 Magnetoelectric motor / 2499345
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.
 Electromagnetic generator / 2494520
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).
 Dc electromagnetic machine / 2490773
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.
 Submersible water-filled synchronous generator of vertical design / 2483417
Proposed submersible water-filled synchronous generator of vertical design comprises a basic shield, where a circular flat magnetic conductor is fixed, wound from electric steel, with a winding, a rotor disc with permanent magnets, a bearing shield arranged as cantilevered relative to the basic shield and comprising bearings of the rotor shaft. At the same time, according to this invention, the generator is equipped with a thrust sliding bearing, which has a journal in the form of a disc arranged on the rotor shaft, and a step-bearing in the form of a thrust sleeve, which covers the bearing shield at the side opposite to the basic shield, and is fixed with the help of bolts. The entire inner cavity of the generator is filled with water, and the generator with a hydraulic turbine arranged above it is submerged under the water level and is retained in this position with the help of floats, and is kept away from displacement by a retaining device.
 Magnetoelectric generator / 2474032
In a magnetoelectric generator, the rotor of which comprises a disc (1) fixed on a shaft, and on the disc there is a ring-shaped row of permanent magnets (2) with alternating polarity, arranged as equidistant relative to each other, and the stator comprises two parallel plates (3,4), between which there are windings, besides, stator windings are arranged on U-shaped cores from electrotechnical steel, which are fixed on plates (3, 4) of the stator, width Bc of the end of the U-shaped core (6) makes a half of the width B of the permanent magnet (2) of the rotor, besides, ends of the U-shaped cores (6) of one plate (3) face the ends of the U-shaped cores (6) of the other plate (4) and are displaced relative to them by the distance equal to the half of the width of the permanent magnet (2) of the rotor, besides, the permanent magnets (2) of the rotor are arranged between opposite ends of U-shaped cores (6) of the stator.
 Low-speed end synchronous generator / 2446548
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.
 Windmill generator / 2519061
Invention relates to windmill generator (1) with closed internal cooling circuit with stator (4) made of metal sheet. Said stator has the system of windings with front parts (10) composed thereby. Note here that stator (4) is surrounded in at least the sheet stack area by cooling shell (3). Note also that permanent magnets (18) of rotor (5) are arranged on shell (6) of salient-pole rotor shaped to hollow shaft. Note here that salient-pole rotor shell (6) is connected via bearing elements (28) on end sides with shaft (7) or shaft ends and locked thereat. Note here that said hollow shaft accommodates at least one pipe (29, 33) with its side surface located equidistantly from salient-pole rotor shell (6). Note also that fans (24, 25) are arranged at rotor end sides. Said pipe is fitted inside hollow shaft to make cooling channels.
 Magnetoelectric machine with improved rotation uniformity / 2518489
Invention is related to the area of electric engineering and namely to electric machines with permanent-magnet excitation, and it may be used in electric machine engineering. At that the invention ensures improved rotation uniformity, enhanced energy indicators, reduction of noise and vibration level for the magnetoelectric machine. In the suggested magnetoelectric machine including armature with winding laid in z slots and non-salient pole rotor with permanent magnets the armature slots are bevelled at the angle α corresponding to an integer number of tooth harmonic periods.
 Windmill generator stator / 2517168
Invention relates to electrical engineering and wind-power engineering. The suggested windmill generator stator contains magnetic cores, an excitation system, tightening elements and a winding, at that according to the invention the stator is made as a flat-topped bracket and a wafer pack with installed armatures with an operating and exciting coils and the middle part of the above pack is rigidly connected to the middle part of the above flat-topped bracket.
 Borehole motor / 2516472
Invention relates to electrical engineering and machine building, particularly, to borehole motors to lift bed fluid. Proposed borehole motor comprises stator with toothed magnetic core accommodating the rotor. Stator teeth internal surface has grooves regularly arranged in circle in axial direction, the number making three, or being multiple of three.
 Rotor of electric machine / 2516440
Rotor of the electric machine contains a shaft, a magnet core made of equally alternating magnet and non-magnet circular plates, permanent magnets with pole tips and a cylindrical non-magnet cage covering them from the side of the external surface. The permanent magnets with pole tips are installed in windows of the above cage. At that according to the invention the permanent magnets are made so that the radius centre of the external cylindrical surface of each magnet is shifted along the longitudinal magnet axis towards the external surface of the non-magnet cage forming a smooth increase in the cage cross-section above the magnet and pole tip from the magnet longitudinal axis towards its lateral sides. Mechanical stress occurring in such design of the rotor is distributed evenly across the cross-section of the above non-magnet cage over each permanent magnet with pole tip from the magnet longitudinal axis towards its lateral sides during operation of the electric machine.
 Single-phase alternating current motor / 2516413
Invention relates to electric engineering, particularly to electric machines and covers design features of a single-phase alternating current motor. The suggested single-phase alternating current motor contains a stator with teeth-forming slots for the primary winding and slots for an auxiliary winding. The primary winding can be connected to the alternating current supply source in order to generate the main magnetic field with the main magnetic axis, the auxiliary winding can be connected to the power supply source through an operating capacitor to generate an auxiliary magnet field with an auxiliary magnetic axis, at that the above main and auxiliary axes set the rotating vector by means of vector summation and this vector represents the resultant magnetic field with permanent magnetic induction at operation of the motor at the rated load. Herewith according to the invention the teeth group located at the auxiliary magnet axis has a higher magnetic conductivity in comparison with other teeth, at that the least tooth of all teeth forming slots for the primary winding is bigger that the biggest tooth of all teeth forming slots for the auxiliary winding.
 Electromagnetic device with reversible generator and motor operation / 2516373
Invention relates to electrical engineering. The electromagnetic device has a stator and a rotor rotating between facing surfaces of the stator and bearing a plurality of magnets distributed at regular intervals along its periphery. The magnets are arranged such that they form a sequence of alternately opposite poles on the surfaces of the rotor directed towards the stator, and the stator comprises two sets of independently supported magnetic yokes located at both sides of the rotor in front of the magnets. The magnetic yokes have two axially oriented arms, the end surfaces of which, when the rotor is in a fixed state, at least partly face a pair of successive magnets on a same surface of the rotor.
 Stator of rotating electric machine excited by permanent magnets / 2516367
Stator has a variety of segments located close to each other in the circumferential direction. According to the invention the above segments have teeth and slots passing in the longitudinal direction of the stator, at that the neighbouring segments touch each other at the segment boundary and teeth of the neighbouring segments are located so that at the segment boundary a tooth of one segment touches the tooth of the neighbouring segment, herewith the total width of the teeth touching each other at the respective boundary is bigger than the total width of the majority of teeth which are not placed at the segment boundaries or all teeth which are not placed at the segment boundaries directly, at that the minority of teeth not placed directly at the boundary of the specified segments has the same width, which is bigger than the total width of the majority of teeth which are not located directly at the segment border.
 Synchronous micromotor with electromagnetic unipolar excitation / 2516286
Invention refers to the field of electric engineering, in particular, to electric machines, and relates to manufacture of synchronous micromotor with unipolar excitation. A synchronous micromotor with unipolar excitation contains a stator with a standard core with a three-phase power winding that creates a rotary magnetic field of the stator and a direct-current excitation winding that creates an excitation flux, as well as a cylindrical solid rotor of iron-copper alloy divided by a non-magnet conductive layer into two magnet isolated parts - two cores of the rotor. According to the invention, at that in order to increase reliability of the synchronous motor operation contactless electromagnetic unipolar excitation is carried out when two cores of the rotor form two permanent magnet poles with invariable different polarity, the north N and the south S ones, at their interaction with the rotary magnetic field of the stator the synchronising torque is created and availability of solid cores at the rotor ensures asynchronous start without a starting winding.
 Permanent magnet machine / 2516270
Permanent magnet machine contains a fixed stator and a movable rotor made of non-magnet material, in the stator frame there are U-shaped imbricated cores with windings, the rotor contains operating components made as the permanent magnets placed in the openings in the form of slots with size l and l1, at that the number of slots m is equal to the number of the permanent magnets. At that the stator frame of the permanent magnet machine is made as a hollow cylinder with at least 3 groups of U-shaped imbricated cores with windings placed at its inner surface. Each group contains at least 3 U-shaped imbricated cores with windings interconnected in series and shifted in regard to each other per the distance L. The rotor is placed inside the stator and consists of a hollow cylinder with the permanent magnets placed in its slots and shifted in regard to each other per the angle of α=120°, poles of the permanent magnets protrude the limits of the hollow cylinder per a value Δ: Δ=d-l', where Δ is a value of the magnet poles protrusion outside the limits of the hollow cylinder; d is a circle diameter defined by the inner diameter of the stator and sizes of the magnet core; l' is a value of the air gap between the magnet core and the magnet.
 Rotor magnetic system / 2244370
Rotor magnetic system has more than two magnetically permeable steel laminations with pole horns formed by prismatic tangentially magnetized N-S permanent magnets placed inside laminated stack; inner and outer diameters of laminations are uninterrupted and rectangular prismatic magnets are installed inside them so that distance over outer arc between external planes of two adjacent magnets of unlike-polarity poles is shorter than that over internal arc between same planes; magnets do not contact one another and have at least one projection on inner diameter for coupling with rotor shaft.
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FIELD: electricity. SUBSTANCE: in suggested magnetoelectric generator containing stator with toroidal magnetic circuit with radial teeth grouped in groups of three teeth with stator winding mounted on them and the disc rotor mounted on the shaft with permanent magnets having axially oriented magnetisation and alternating polarity, according to the invention group of the rotor permanent magnets corresponds to each group of teeth with stator windings, at that the distance lm between the outermost edges of the magnets in each group in an arc concentrical in regard to the rotor axis and passing in the middle of magnets corresponds to the distance lo in the same arc between the extreme points of the stator windings in each group. EFFECT: almost complete elimination of rotor sticking effect for electromagnetic generator with simultaneous increase in its efficiency factor. 8 dwg
The invention relates to the field of electrical engineering, namely low-speed electric generators, and can be used in particular in wind turbines. Known magneto-electric generator, the rotor is equipped with permanent magnets and the stator contains two parallel plates, between which is placed an annular winding, 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, 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 series, ring winding is inserted into each other to form modules, 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, characterized in that between the annular windings placed additional flat annular coil in the shape of an isosceles trapezoid, the sides of which are located in one pleskot settled between the sides of the other annular windings, RU115978U1. The disadvantage of this technical solution is a big gap between the rows of permanent magnets, which reduces the magnetic field strength in the gap and, accordingly, the power generator. Known magneto-electric generator comprising a stator with a toroidal magnetic core with radial teeth that host stator winding and mounted on a shaft-disk rotor with permanent magnet with axial magnetization and alternating polarity; each spike corresponds to the same square magnet http://imlab.narod.ru/Energy/Gen_l 96/Gen_l 96.htm, 6 S., 2.1 and 5.1 (reference copy attached). The coincidence of permanent magnets with the teeth of the magnetic circuit of the stator (figure 5.1) due to the force of attraction occurs high torque resistance to rotation of the rotor with the shaft ("sticking" of the rotor), for which the solutions necessary to substantially increase the starting torque on the shaft of the generator. When increasing or decreasing the number of windings per unit compared to the number of magnets the effect of "sticking" of the rotor is relatively smooth, however, significantly reduced the coefficient of performance (COP) of the generator. All these drawbacks also magnetoelectric generator according RU2337458C1, comprising a stator with a toroidal Manitoba the Odom with radial teeth. The number of coils and, accordingly, teeth, b=2, 3, 4, 5... a positive integer. In the specific example of figure 1, 2 in each group contains three prongs. The rotor contains 16 permanent magnets, and the magnetic circuit of the stator 18 teeth with the windings. As the number of magnets and teeth varies, the effect of "sticking" of the rotor is relatively smooth, however, significantly decreases the efficiency of the electric machine. The device RU2337458C1 taken as a prototype of the present invention. The present invention is the almost complete elimination of the effect of "sticking" of the rotor and increase efficiency. According to the invention in a magneto generator comprising a stator with a toroidal magnetic core with radial teeth, grouped by three teeth in each group that host stator winding and mounted on a shaft-disk rotor with permanent magnet with axial magnetization and alternating polarity, each group of teeth, with the windings of the stator corresponds to the band, consisting of two permanent magnets of the rotor, the distance lmbetween the end faces of the magnets of each group in an arc concentric with the axis of the rotor and passing through the middle of the magnets corresponds to the distance loon the same arc between the extreme points of the windings state is in each group. 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 to condition patentability of "Novelty." The permanent magnets of the rotor are conjugate to each other without gaps between them and almost form a closed circular path. Therefore, across the entire surface of any tooth is always on the surface one or two magnets. Precluded, when the front surface of the tooth is the gap between the magnets, as is the case in the device prototype. Thus, almost completely eliminated the "sticking" of the rotor. Very small forces of resistance to rotation of the rotor due to hysteresis in the magnetization reversal of teeth of the magnetic circuit of the stator can be neglected. Since all magnets simultaneously and continuously interact with the teeth and, consequently, with the windings of the stator increases the efficiency of the generator. Thus, we achieve the technical result consists in the practical exclusion of the resistance force to the rotation shaft of the generator due to the effect of "sticking" of the rotor, and also to increase efficiency. 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. These obstajate istva allow to draw a conclusion on the compliance of the claimed technical solution to the condition of patentability "Inventive step". The invention is illustrated by drawings, which shows: figure 1 is a front view with a partial tear-out; figure 2 - section a-a in figure 1; figure 3 - section b-b In figure 1; figure 4 - section C-C in figure 1; figure 5 is a group of teeth toroidal magnetic core and a stator with windings and above them permanent magnets; figure 6 - section D-D figure 5; figure 7 is a group of teeth, the toroidal magnetic circuit of the stator windings in a perspective view; on Fig - magneto generator Assembly in a perspective view with a partial tear-out. Magnetoelectric generator includes a stator with a toroidal magnetic core 1 with radial teeth 2, grouped by three teeth in each group. The number of teeth in the group determines the power phase of the generator, that is, with three teeth in the group generator is three phase. The teeth 2 is posted winding 3 of the stator. The generator also includes fixed on the shaft 4 of the disk rotor 5 with the permanent magnets 6 with axial magnetization and alternating polarity. Each group of teeth 2 corresponds to a group of two permanent magnets 6 of the rotor. Length lmbetween the end faces of the magnets of each group in an arc concentric with the rotor axis and passing through the middle of the magnets corresponds to the distance labouton the same arc between the extreme that the kami of stator windings in each group (figure 5, 6). Magnetoelectric generator includes a housing 7 and a cover 8. Magnetoelectric generator works as follows. When the rotor 5 with the shaft 4 of the magnetic force lines of the permanent magnets 6 induce the teeth 2 of the magnetic core 1 of a stator of an alternating magnetic field that causes the appearance of EMF in the windings 3 of the stator. As between the permanent magnets there are no gaps, to the surface of each tooth 2 is always facing surface of one or two permanent magnets. This eliminates the "sticking" of the rotor, all the magnets always and fully induce EMF in the windings of the stator, which provides increased efficiency in comparison with the prototype. Phase shift EMF in the windings on adjacent teeth of each group (figure 5, 6, 7) is 120°, which ensures the generation of a three-phase electric current. Manufactured and tested a prototype device. Magnetoelectric generator can also be operated in the mode of the electric motor. Magneto-electric generator comprising a stator with a toroidal magnetic core with radial teeth, grouped by three teeth in each group that host stator winding and mounted on a shaft-disk rotor with permanent magnet with axial magnetization and alternating polarity, characterized in that the each group of teeth, with the windings of the stator corresponds to the group, consisting of two permanent magnets of the rotor, the distance lmbetween the end faces of the magnets of each group in an arc concentric with the axis of the rotor and passing through the middle of the magnets corresponds to the distance loon the same arc between the end points of the windings in each group.
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