SUBSTANCE: invention relates to electrical engineering and wind power, namely to wind power generators with vertical axis of rotation. Stator contains excitation sources, magnetic cores, work coil and bases with fasteners. The magnetic cores are made in form of top and bottom groups. Each group includes angle-bar which horizontal flange looks on the end gap of the rotor element, and vertical flange looks on first end of coil with permanent magnets. The second end of the coil with permanent magnets is connected with common vertical magnetic core.
EFFECT: efficiency improvement due to that not only radial by end gaps are also used.
The invention relates to the field of wind energy, namely wind power with a vertical axis of rotation.
Known stators of the wind power segment type [RF Patent №2204734 /A. M. Litvinenko. The stator wind power./ Publ. Bull. No. 14, 20.05.2003, application No. 2001129417/06 from 30.10.2001, MKU F03D 9/00]. The stator contains the first rotor wheel with a rotary elements mounted on the ends of the blades. The stator coil is made in the form of the first cylindrical section and a second cylindrical section which is convex to each other and are connected by straight sections. The areas covered by the magnetic circuit with magnetic fields. In this magnetic circuit, located on the site facing to the rotary elements, and the magnetic covering the area, are located with the possibility of magnetic contact with the rotary elements of the second propeller. The cores are connected by magnetic fields.
The disadvantage of this stator are the large dimensions of the coil and, consequently, greater consumption of copper.
Of all known analogues closest to the claimed combination of essential features is the stator wind power [RF Patent №2253042 /A. M. Litvinenko. - Wind power./ Publ. Bull. No. 15, 27.05.2005, application No. 2003130050/06 from 09.10.2003] CE is the elemental type, which contains the magnetic circuit, the excitation sources, the fastening elements, a base and a working coil, according to the invention, the stator is made in the form of two pairs of U-shaped magnetic circuits, the upper pair of which are oriented ridges down between adjacent racks installed the excitation system, the lower pair is oriented jumpers up and covered by the coil, which is located between adjacent racks.
The disadvantage of this invention is the presence of only the radial clearance, which reduces the efficiency of the design.
The invention is aimed at providing not only radial, but and face clearances, which increases the length of the gap, reduces the magnetic resistance.
This is achieved by the fact that the stator containing the excitation sources, the magnetic operating coil and base with mounting elements according to the invention, the magnetic circuit is made in the form of upper and lower groups, each group includes the area facing horizontal shelf to the end clearance of the rotor element, and the vertical shelf to the first end of the coil with the permanent magnets and the second end of the coil, the permanent magnet is connected with the total vertical magnetic circuit.
The invention is illustrated in the drawing, which shows a vertical section of a stator and a rotor on which the barn generator.
The stator consists of a base 1 in the form of a ring, in the middle part of which is installed thrust bearing 2, which is the lower support of the vertical shaft 3 of the rotor, in which the upper part has a bearing 4 mounted at the top of the base 5. The rotor with the rotor elements 6 (rectangular plates, the role of teeth). In the area of the end face of the rotor element, namely about the end of the gap 7, installed shelf 8 of the first area, which is facing the end face of the rotor element. This regiment through the spacer 9 is attached to the upper base. Consistently with vertical shelf 10 of the first area is connected to the permanent magnet 11 with the working coil 12. The right end face of the permanent magnet 11 is mounted on a vertical magnetic circuit 13, to which is also attached below the permanent magnet 14 of the working of the excitation coil 15. Vertical shelf attached using a mounting area 16 to the base 1, and the left end face of the permanent magnet 14 is attached to the vertical shelf 17 of the lower area, which with its free side facing the bottom end of the gap 18. The rotary element 6 is attached to the rotor disc 20 with over 19. Between the rotary element 6 and the vertical magnetic core 13 is a radial gap 21.
After the stator is as follows. When the rotor is switched in each of the on the ear of magnetic circuits: upper and lower. For example, at the top of the chain: the rotary element 6 gap 7 - shelf 8 - vertical shelf 10 is a permanent magnet 11 is a vertical magnetic circuit 13 to the gap 21 is a rotary element 6; the lower chain: rotary element 6 - the gap 21 is a vertical magnetic circuit 13 is a permanent magnet 14 - regiment 17 - lower area - clearance 18 - rotary element 6. As a result, in the working coils 12 and 15 is induced electromotive force, which is then passed to the consumer.
Technical and economic advantage of the stator is its high efficiency, which is due to the fact that are not only radial, but the end clearance.
The stator containing the excitation sources, the magnetic circuits, the working coil and the base with fasteners, characterized in that the magnetic circuit is made in the form of upper and lower groups, each group includes the area facing horizontal shelf to the end clearance of the rotor element, and the vertical shelf to the first end of the coil with the permanent magnets and the second end of the coil, the permanent magnet is connected with the total vertical magnetic circuit.
SUBSTANCE: in electromagnetic gear containing a housing with mounted stator with multiphase winding coupled to the voltage source as well as the first and second rotors rigidly fixed at the input and output shafts respectively, according to the invention the stator winding is coupled to the voltage source through a regulated frequency converter and placed in grooves of the stator inner surface thus forming poles, while the first rotor is mounted coaxially with stator and fixed rigidly to the input shaft end, is designed as a squirrel cage, which rods are inserted into the rings made from non-magnet material, they have prismatic shape and form teeth of the first rotor, and the second rotor is placed inside the first one and made as a toothed magnetic core with the teeth number z2, equal to z2 = (z1 - p1), where z1 - number of teeth of the first rotor; p1 - number of pole pairs of the stator winding; while the stator, teeth of the first rotor and the second rotor are laminated and made from ferromagnetic thin steel plates.
EFFECT: preserving the possibility of regulation of reduction coefficient at simultaneous providing of design simplification.
SUBSTANCE: in electromagnetic gear containing a housing with mounted stator with multiphase winding coupled to the voltage source as well as the first and second rotors rigidly fixed at the input and output shafts respectively, according to the invention stator winding is coupled to the voltage source through a regulated frequency converter and placed in grooves of the stator inner surface thus forming poles. The first rotor mounted coaxially with stator and fixed rigidly to the input shaft end is made as a squirrel cage, which rods inserted to rings made of non-magnet material form teeth of this rotor with height equal to a half width of the groove, and the second rotor placed inside the first one is made with grooves at its outer surface and short-circuited winding is placed to them, at that the stator, teeth of the first rotor and teeth of the second rotor are laminated and made of ferromagnetic thin steel plates.
EFFECT: simplifying design with potential regulation of reduction ratio.
FIELD: engines and pumps.
SUBSTANCE: differential gearing with one input and two outputs are used as a gear ratio converter in proposed motor. Gearing input is engaged with motor rotor. One of said outputs is engaged with driven shaft to receive higher torque while second output is engaged with second rotor inductively coupled with motor rotor. Driven shaft rpm is varied by changing the second rotor circuit electric load.
EFFECT: optimum acceleration of the motor, higher efficiency, simplified control.
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
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
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.
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.
FIELD: electrical engineering.
SUBSTANCE: electromagnetic motor contains cylindrical induction coil consisting of magnetic core and excitation winding located in its circular groove; forward and reverse stroke armatures opposite to each other in coaxial relationship; return spring installed in the axial channel formed by end blind grooves in forward and reverse stroke armatures. Forward and reverse stroke armatures are made as disc and cylindrical parts interconnected rigidly. Cylindrical parts have diameters of different values. In cylindrical part of the forward stroke armature there is an internal blind groove which diameter is bigger than the diameter of cylindrical part of the reverse stroke armature, and it is capable to move along inner grove of the forward stroke armature. Disc parts of the armatures are oriented towards different poles of cylindrical induction coil. In the reverse stroke armature there is an axial bore with axial rod of the forward stroke armature located in it.
EFFECT: reduction of vibration level for electric motor housing, increase in performance and economical operation.
SUBSTANCE: in design of the proposed unipolar machine (UM) there are no conventional sliding brush contacts, and several disks can be easily connected in series to its electric anchor chain by means of electrically conducting belts and hollow cylinders with common magnetic system. At that, rotation shafts in the proposed UM always rotate to opposite sides, which can be provided either with individual external motors, or by any common reversing mechanism. Proposed direct current UM with two shafts can operate both in generator mode, and in motor mode.
EFFECT: sufficient increase of wear resistance, improvement of electromechanical characteristics and noticeable increase of operating voltage; enlarging application field of unipolar direct current machines.
FIELD: electrical engineering.
SUBSTANCE: magnetoelectric machine rotor system consists of two coaxial rotors. The external (outer) rotor is designed in the shape of a hollow cylinder of high-strength, non-magnetic and electrically non-conductive material with constant magnets uniformly fixed thereon; the magnets are magnetised in a radial direction and have alternating polarity. There are gaps between the external rotor magnets wherein the retaining elements are positioned made of a non-magnetic and electrically non-conductive material. The internal rotor is designed in the shape of a shaft of a magnetically soft material, toothed on the outside, the internal rotor teeth number equal to that of the external rotor permanent magnets. The internal rotor radial bearings are positioned outside the external rotor bearings. The external rotor axial bearing is represented by axial magnetic forces of interaction between the permanent magnets of the external rotor, the stator core and the shaft.
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
SUBSTANCE: invention relates to electrical engineering and wind energetics. Rotor of the segmental electric generator includes shaft, hub, rim and magnetic cores in form of two angle connections of straps, one is inside the other one. The straps have fixtures for securing on the rim. Technical result is improvement of the generator efficiency upon minimisation of its price as the rotor is magnetically interacts with the stator via two air gaps: outside and inside, thus reducing magnetic dispersion. Additional electromotive force increasing is due to additional rotor elements only, at that the magnetic field source is the same.
EFFECT: use of strap elements increases produceability.
SUBSTANCE: invention relates to electrical engineering and wind power, namely to wind power generators with vertical axis of rotation. In the suggested generator stator containing the excitation sources, magnetic cores, work coil and bases with fasteners; according to the invention the magnetic cores are made in form of top and bottom groups, each group includes three angle-bars, their flanges are connected with cores in series via the coils, at that the first angle-bar horizontal flange looks on end of the rotor element, the second angle-bar is installed in zone of the external angle of the rotor element, and third angle-bar is installed with vertical flange in zone of radial gap.
EFFECT: decreasing of the magnetic resistance and assurance of not only radial but end gap also, resulting in length of the used gap and thus increasing the generator efficiency.
FIELD: motors and pumps.
SUBSTANCE: invention relates to the electromagnetic motor with low heat generation. The electromagnetic motor contains at least one stator, including at least one winding. The winding is made by the wire, its outlets are respectively connected with positive and negative poles of the power source. Between the winding outlet and negative pole of the power source the switch is connected, it is located near the rotor shaft, at that the switch actuator is located on the shaft end. At that the magnetic field in created in the winding in two directions: at electric current of power source supply and disconnection, respectively.
EFFECT: enhanced efficiency of motor operation.
23 cl, 15 dwg
SUBSTANCE: in a non-contact electrical machine the shaft with rotor are made as a cylinder of uniform cross-section with slots for rotating rectifiers. At that diameter of the movable magnet core of the rotary transformer is equal to the rotor diameter while bore diameter of the fixed magnet core of the rotary transformer is equal to the stator bore diameter.
EFFECT: improving reliability and energy efficiency, increasing output power of the non-contact electrical machine.
2 cl, 4 dwg
SUBSTANCE: invention is related to electric engineering and may be used predominantly for electrical machine constructions, and namely for AC electronic motors and synchronous generator with excitation from permanent magnets. The suggested electrical machine comprises a stator with laminated slots, multiphase armature winding and rotor with slots where permanent magnets are placed thus forming a system with alternating poles, at that active length L of the rotor is selected equal to (2.8-3.1)τ, where τ is polar pitch of the rotor.
EFFECT: improvement of power and dynamic performance of the electrical machine due to increase efficiency of active material usage.
SUBSTANCE: invention relates to the field of electric engineering and may be used in electric pumps with permanent magnets on the rotor. The rotor core for electric motor comprises a variety of poles. Each pole consists of a pair of the first permanent magnets placed as V-shaped assembly open in direction of the outer peripheral side and the second permanent magnet placed in parallel to circumferential direction towards the open part of the V-shaped assembly, at that polarity is changed in sequence. The groove is shaped so that the groove centre is in the range between electric angle position shifted per 1/4 of the harmonic component cycle of voltage induced in direction of d-axis and electric angle position shifted per 1/8 of the harmonic component cycle in direction of q-axis from the basic point placed between the line connecting an angular part of the second permanent magnet at the outer peripheral side of the rotor and the rotor shaft centre and q-axis out of the variety of separating lines, which connect the variety of separating points set within the range of electric angle corresponding to one cycle of the harmonic component from d-axis up to q-axis at the outer periphery of the rotor core and the rotor shaft centre.
EFFECT: reducing losses in steel.
6 cl, 10 dwg
SUBSTANCE: brushless two-rotor direct current motor comprises rotating magnetised deperm rotors with actuating coils and fixed toroid stator with operating winding on it. The actuating coils are fixed at the stator. The rotors are placed by like magnetic poles respectively from the side of inner and outer surfaces of the toroid stator thud forming two cylindrical magnet gaps, inside these gaps there are non-magnet cylinders adjoining the toroid stator and the operating coil of the toroid stator is wound on the above non-magnet cylinders while its turns pass through openings in the toroid stator. The respective half-turns of the operating coil are placed in direct vicinity from cylindrical surfaces of the rotating rotors. The actuating coils of the rotors and the operating coil are connected in series or in parallel to the direct current source. Two independent magnet circuits formed by the rotors and toroid stator are closed through magnetically conductive washers coupled magnetically to the rotors and fixed to magnetically conductive walls of the stator with minimum permitted gaps. Thickness of walls of the non-magnet cylinders is selected so that it is five-ten times bigger than the gap between conductors of the working winding and cylindrical surfaces of the rotors.
EFFECT: increasing energy efficiency, reliability and durability.
FIELD: machine building.
SUBSTANCE: lock member preventing fastening nuts from self-unscrewing at the deformation and vibration of a core is installed at the threaded ends of longitudinal keybars of the core behind the end plates under the fastening nuts. The element comprises a thin-walled ring with the outer diameter being greater than the fastening nut diameter, its protruding part is folded onto the edge of the fastening nut. The ring body is fitted by a local protrusion and a locking "socket" in the end plate under the fastening nut with the protrusion being set in the "socket". The ring is mounted behind the fastening nut, is increased by its thickness at least up to the half of the fastening nut thickness. The ring is also fitted by a local protrusion at the end face on the side of the hole eccentricity and on the side turned to the fastening nut. The area of the protrusion amounts to 1/4 of the area of the cut-off ring on the side turned to the fastening nut by oval grooves with designed depth outside along the side surface symmetrically to the slot. The ring is also fitted by two passage holes and a clamping bolt with a nut and a lock washer.
EFFECT: improved clamping of keybar thread without increase of a lock member size, its improved reliability and fabricability.
4 cl, 6 dwg
SUBSTANCE: invention relates to electrical machines, namely to noncontact synchronous generators of inductor type operating mainly with rectifying load, used, for example, in generating units of motor-and-tractor machinery. The invention is aimed at overcoming of impossibility to use as the base the widely widespread and reliable asynchronous machines with a square-cage rotor. It is achieved by that the inductor machine, containing front, back covers, stator with a working winding, source of excitation, rotor with the shaft, according to the invention is equipped with a ferromagnetic sprocket with a central hole, the sprocket is located between a source of excitation and non-magnetic insert, which is attached to a cover, and each teeth of the star has threaded hole from the side part with fastened closing elements with a chamfer coupled connected with the stator.
EFFECT: use of the given structure allows on the basis of the initial asynchronous machine by adding of the source of excitation and details of the magnetic circuit to obtain the synchronous inductor machine, which has such a positive feature, that EMF is generated by the rotation speeds of the shaft from low up to rated one, while for operation in the mode of induction generator it is required to provide the rotor rotation higher than the rated speed.
SUBSTANCE: invention relates to electrical machines, namely to noncontact synchronous generators of inductor type operating mainly with rectifying load, used, for example, in generating units of motor-and-tractor machinery. The invention is aimed at overcoming of impossibility to use as the base the widely widespread and reliable asynchronous machines with a square-cage rotor. It is achieved by that the inductor electrical machine containing front, back covers, stator with the working winding, source of excitation, rotor with the shaft, according to the invention is equipped with a ferromagnetic ring, closing devices, magnetic circuit of sprocket type with a hole and non-magnetic insert, and the ferromagnetic ring is installed by the first side part in external, with reference to frontal parts, zone of the stator closely, from the other side of ferromagnetic ring the closing elements are installed which are connected to the sprocket teeth using the slot and clamp.
EFFECT: use of the given structure allows on the basis of the initial asynchronous machine by adding of a source of excitation and details of magnetic circuit obtaining a synchronous inductor electrical machine, which has such a positive feature, that EMF is generated by the rotation speeds of the shaft from low up to rated one, while for operation in the mode of induction generator it is required to provide the rotor rotation higher than the rated speed.
FIELD: power engineering.
SUBSTANCE: invention relates to the wind power engineering, in particular to wind power generation units. The wind turbine contains the guiding element and two bladed rotors with vertical shafts and blades placed with zone of overlapping formed between internal blades. There top rotors re inserted additionally the shafts of which are joined with vertical shafts of bladed rotors by means of angle transmissions. Shafts of top rotors are installed with an inclination into the central part of the wind turbine and with placement of their internal blades in the zone of overlapping of blades of the bottom rotors.
EFFECT: invention provides improvement of power parameters due to decrease of the area of blades when they are moved against a wind.