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Multipolar electric power generator with magnet compensation Invention is related to the area of electric engineering, and namely to electromechanical induction synchronous AC generators. The generator comprises a stator frame with stationary energy-generating elements fixed along the rotor circumference, a multipolar rotor installed so that it may be rotated around its axis. The rotor comprises the preset quantity of permanent magnets mounted along the rotor circumference with a gap in regard to the stator energy-generating elements. The generator comprises also a single-reduction gear unit. Diameter of driving pinion of the reduction gear unit corresponds to the rotor diameter while its idler is fixed at the rotor axis. The stator energy-generating elements are not placed continuously along the rotor circumference, but symmetrically and separately from each other, at that diametrically opposite elements form their own pair, and these pairs of the energy-generating elements are shifted in regard to its other with the preset pitch along the rotor circumference. |
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Electric motor and/or generator with mechanical tuning of magnetostatic field Invention relates to electric motors and generators, in particular to regulation of a position of permanent magnets and/or of shunting inserts made from non-magnetoconductive material, in a rotor. AC motor or generator contains fixed windings (or stator), located around a rotor with permanent magnets. The permanent magnets are usually made cylindrical and they have two magnetic poles. Magnetoconductive loops are formed by magnets located in magnetoconductive pole terminals. During rotation of permanent magnets and/or shunting inserts made from conductive non-magnetic material, in pole terminals the force of resulting magnetic field for torque (at low speed) or efficiency (at high speed) regulation of AC motor or generator is increased or decreased. By change of a rotor magnetic field the voltage output of AC generators is regulated with a possibility of ensuring, for example, of constant voltage at the output of the generator with wind motor. |
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Electric machine contains casing with laminated rotor core with slots for winding coils installation. In the cylinder cavity of the stator the rotor is installed with possibility of rotation, it includes shaft and inductor with external cylindrical surface containing alternating along the perimeter poles and permanent magnets fixed in slots of the inductor by the non-magnetic wedges. Between the shaft and inductor a bushing is installed, on it inductor is rigidly secured. End faces of the rotor are rigidly secured to the end face covers. The composite permanent magnets of similar height ate rigidly secured in ring clearances. Ring permanent magnets are rigidly secured above each other on walls of second and forth ring collars looking on the rotor axis of rotation. Electric machine casing is provided with shields. |
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Leakproof pump with permanent magnet-based drive and corrosionproof body Invention relates to the field of electric engineering and may be used in electric pumps with the drive based on permanent magnets. Leakproof pump with permanent magnet-based drive features the corrosionproof body containing a reinforced bracket, motor enclosure and the rear motor enclosure. The reinforced bracket is made of corrosionproof plastic; the motor enclosure and rear motor enclosure are made of aluminium alloy. Thus the corrosionproof body is capable to prevent chemical corrosion of components made of aluminium alloy. Besides the leakproof electric pump with permanent magnet-based drive represents mechanism for heat dissipation at simultaneous provision of the required structure for the corrosionproof body in such way that the electric motor can dissipate heat with sufficient rate. |
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Motor wheel for drive of vehicles Multi-pole synchronous electric motor with excitation from permanent magnets comprises a stator with even number of poles 2p, on the poles there is a winding made of one coil per pole, a salient-pole rotor with even number of poles, permanent magnets with tangential magnetisation are located on the rotor radially between poles, the salient-pole rotor with tangential magnetisation of poles is made with number of poles equal to the number of poles on the stator, and equal pitch between poles, pole tips of identical poles on the stator differ in their width from width of poles of the opposite polarity. |
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Invention pertains to the field of electric engineering, in particular to eclectic motors with permanent magnets used, for example, for submerged electric drive without formation fluid lifting. The motor rotor comprises a key-slotted shaft, the core pack made of electric steel plates with alternating poles, and each of them is formed by two V-mounted prismatic permanent magnets with tangential magnetism faced to the pole by its one polarity. The magnets are placed in slots of the pack plates and do not touch each other. The number of magnets is twice bigger than the number of poles. At inner surface of poles of both polarities there are slots along the pole axis. |
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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. |
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Invention relates to the field of electrical engineering, in particular to synchronous machines with combined excitation. According to the given invention on the armature of the synchronous machine containing a multiphase armature winding and face laminated core with multiphase sub-excitating winding, the latter is combined with the armature winding on a part of active length of armature core and forms a part of active length of its coil. The magnetic circuit of the rotor with permanent magnets is made short, forming a free ring band on a part of active length of the armature core, where the additional ring-type magnetic circuit of claw type fixed on the rotor is installed. In a ring-type magnetic circuit in its internal ring hollow the stator-fastened magnetic circuit with a toroidal field coil is installed, which is connected to the machine control and regulation system. During the operation of the synchronous machine the sub-excitation link of claw type with the toroidal winding creates an additional regulated magnetic flux, the direction of which can be co-directional or opposite with the main flow of permanent magnets, that ensures the operation of the synchronous machine both in normal, and in abnormal modes of operations with a possibility of excitation field dampening. |
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Inductor machine includes stator installed in magnetically soft housing (1) and made in the form of two laminated packs (2) and (3) from magnetically soft material with teeth (4) on their inner surface, working winding (5), the turns of which are located in slots between teeth (4) restricted as to height with backs (6) of those packs, two rotor packs (7) and (8), which are installed inside bores of stator packs (2) and (3), and excitation winding (9) installed between rotor packs (7) and (8). According to the invention, on outer surface of each stator pack (2) and (3) a provision is made for external teeth (10) oriented along the machine axis, the number of which is equal to the number of stator teeth on its inner surface, external teeth (10) are located above sections of backs (6) of each stator pack, sections of backs (6) under external teeth (10) are located between internal teeth of stator packs (2) and (3), and on inner side of housing (1) there are slots for arrangement of external teeth (10) of stator packs (2) and (3). |
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Electric machine includes case with end screens, housing a laminated stator core with slots where winding coils are located and fixated by wedges, with rotor positioned inside stator cavity and including inducer actuating poles, permanent magnets, no-magnetic wedges and shaft, so that rotor length exceeds inducer length. Rotor end sections are made in the form of cylindrical bushings out of non-magnetic material, flush-mounted on external surface of inducer, rotor bearing unit allows for static gas and dynamic gas support, and for that purpose external rotor features cylindrical surface and is positioned inside cylindrical cavity of the bushing fixated in the stator cavity with gas supply for stator surface cooling, while case cavity has cooling gas supply and drain, and for that purpose internal surface of the case features longitudinal ducts joining radial ventilation ducts made between stator core stacks. According to invention, stator can be vented separately by at least two pipes in the case for cooling gas supply/drain to/from the case volume occupied by the stator, the bushing has longitudinal lugs matching stator core slots in number, positions and cross-section and fit into the slots, slot vent gap is left between lug surface and slot wedge, lengthwise holes are made in longitudinal lugs of the bushing and connect to radial feed orifices opened into internal cavity of the bushing, cylindrical bushings out of isolating material are installed in the case cavity coaxially to stator core cavity and attached by their ends to the ends of outmost stator core stacks, external surface on the ends facing end screens feature o-ring pairs, and end screen junction with the case is sealed. Cylindrical bushings serve as external cartridges of radial gas-dynamic leaf bearings, and rotor end sections serve as trunnions of the bearings, in addition the electric machine features at least one axial gas-dynamic leaf bearing, and orifices are made in end screens, with orifice inlets connected to lubricating gas source and outputs joining annular slot between o-ring pairs, which in its turn joins longitudinal through holes of the cylindrical bushing. Besides, a screen features pipe connected to separate source of cooling gas and joining permanent magnet cooling ducts formed by slot bottom section and permanent magnet surface facing them, via end sections of inducer, and at the opposite case end the ducts are connected to process gap of axial gas-dynamic leaf bearing which in its turn is connected to gas collector. |
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Magnetoelectric machine with improved rotation uniformity 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. |
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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. |
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Permanent-magnet synchronous motor for drainage pump Present invention relates to electrical engineering, particularly electrical machines, and peculiarities of making permanent-magnet synchronous motors for a drainage pump. The disclosed synchronous motor comprises a permanent-magnet rotor for rotating the a rotor wheel, a pump housing on which the permanent-magnet rotor rests, a stator core and a stator coil. According to the invention, the stator coil has a winding made of aluminium enamelled wire and is provided with a part for connection by welding the lead wire of said winding with a contact for connecting with the lead wire; the winding is hermetically insulated in a protective housing; the outer surface of the part for connection by welding of the lead wire of the winding made of aluminium enamelled wire is tin-plated by soldering or tin electroplating, wherein the part for connection by welding of the lead wire, tin-plated by soldering or tin electroplating, is welded to the contact for connection with the lead wire; the outer surface of the winding made of aluminium enamelled wire is first coated with insulating paper tape and then hermetically insulated by said protective housing. |
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Stator of rotating electric machine excited by permanent magnets 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. |
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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. |
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Single-phase generator with annular armature winding Invention relates to electrical engineering and design of electrical machines, particularly single-phase alternating current generators. The technical result achieved by using the present invention is considerably high efficiency and improved electromechanical properties of single-phase generators. Said technical result is achieved due to that in a single-phase synchronous generator with an annular armature winding, consisting of an armature and an inductor, separated by an air gap, according to the invention the armature consists of two series-connected annular windings with semi-annular ferromagnetic cores, the nearest rectangular ends of which are attached by nonmagnetic bushings, and the inductor consists of a central cylindrical core mounted on a rotating shaft, wherein on diametrically opposite surfaces of the core there are two rod-shaped permanent magnets with concave like poles. During operation of the generator, turns of the annular windings are penetrated by induction field lines of one direction, originating from like poles of the permanent magnets of the inductor. |
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Low-speed current generator has, mounted on a shaft, a rotor with a multipolar system of permanent magnets, a stator in form of a magnetic conductor and stator windings, leads of which are connected to corresponding rectifier units, a high-frequency pulse master generator and as many power correctors as there are rectifier units, each connected to the output of the corresponding rectifier unit and control inputs of which are connected to the output of the high-frequency pulse master generator, wherein the stator is single-sectional, and the number of poles of the rotor differs by one from the number of stator windings, the stator being cogless. |
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Magnetic generator comprises a non-magnetic body, in which cores of working windings of a stator and a rotor made of non-magnetic material are fixed and evenly distributed along the circumference. Cores of the working winding of the stator consist of an H-shaped magnetic conductor and two fixed DC electromagnets installed at its ends, and mobile DC electromagnets are fixed on the rotor. Poles of DC electromagnets of the rotor are aligned in turns as like and unlike towards the specified poles of DC electromagnets of the H-shaped magnetic conductor. During rotor rotation, as at least one DC electromagnet of the rotor aligned in a heteropolar manner approaches one DC electromagnet of the H-shaped magnetic conductor of the stator working winding, the magnetic flow between their poles is closed, and inducing of electromotive force on the working winding of the stator is provided by two other DC electromagnets of the rotor and stator aligned in a unipolar manner. Simultaneous interaction of DC electromagnets of the rotor and stator aligned in a unipolar and heteropolar manner creates an effect of magnetic balance. |
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Rotor and method to manufacture rotor of electric machine Method to manufacture a rotor (14) is proposed for an electric machine (13), including the following stages of its realisation: a) manufacturing of a magnetic element (8) by means of adhesion of permanent magnets (1, 1', 1", 1'") to each other with the help of the first glue, at the same time each permanent magnet (1, 1', 1", 1'") has one side (2) with the magnetic north (N) and one side (3) with the magnetic south (S), at the same time permanent magnets (1, 1', 1", 1'") when adhered are arranged so that sides of the magnetic north (N) or sides of the magnetic south (S) form a common lower side (3, 3', 3", 3'") of the magnetic element (8), at the same time the first glue in the hardened condition has the solid consistency; b) adhesion of the lower side of the magnetic element (8) with the yoke (12) with the help of the second glue, at the same time the second glue in the hardened condition is soft and elastic, which eliminates break of the second glue as the temperature of expansion of the magnetic element (8) and the yoke (12) increases. At the same time the yoke (12) in the place where the magnetic element (8) is adhered to the yoke (12), has the soft and elastic layer (2). |
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Machine with transverse magnetic flux (versions) Electric machine with transverse magnetic flux includes at least three phases, each of which is formed with core stator and windings. All the above phases are arranged in common housing. Parallel connected electric lines are branched from the above phases. There is also current converter from current source, which is formed with inductors connected in each of the above electric lines, switching circuit and switching capacitors. All the above components are placed in common housing. Two versions of the present invention are proposed. |
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Electric machine has a hermetically sealed housing, inside of which there is an interleaved stator core which rests on the housing of the electric machine by the external diameter. The stator core is provided with open grooves which accommodate spools. The spools of each stator groove are fixed by a wedge and a splined insert in contact with it, the cross-section of which can fix the back of the splined insert under the wedge of the groove. The surface of the back of the splined insert on its entire length is provided with a longitudinal channel which opens inside the housing of the electric machine, which is configured to feed compressed gas therein. The splined insert has radial holes, wherein the volumes of the splined inserts which protrude over the surface of the cavity of the stator core are merged into a tubular bushing, preferably composed of segments with formation of an inner surface of a cylindrical shape. Inside the housing, there are cylinder bushings, the cavity diameter of which is equal to the diameter of the tubular bushing. Between the ends of the stator core and the ends of the cylinder bushings facing them, there are stopper rings, the cavity of which is greater than the diameter of the cylindrical cavity of the stator core, provided with a shoulder which encircles part of the outer surface of the cylinder bushing. The stopper rings are made from nonmagnetic material and are fastened with the stator core. The cylinder bushings are mounted with possibility of radial displacement relative the longitudinal axis of the cylindrical cavity of the stator core, for which contacts of the bushings with the housing, an end shield and stopper rings are provided with seal rings, which can be elastically deformed radially and along the longitudinal axis of the stator core. The rotor has an inductor with a cylindrical outer surface, made from poles consisting of permanent magnets, nonmagnetic wedges and a shaft, the length of which exceeds that of the inductor. The ends of the inductor are rigidly fastened to end cylinder bushings made from nonmagnetic material, placed flush with the outer surface of the inductor, which is provided with a band, the outer surface of which has a cylindrical shape which corresponds on the diameter and roughness to the outer surface of the end cylinder bushings, wherein a gas bearing is formed by the gap between the inner cylindrical surfaces of segments of the splined inserts, cylinder bushings and the outer surface of end cylindrical inserts and the rotor band; furthermore, the axial bearing assembly of the electric machine has axial lobed gas bearings and a bearing disc. |
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In the suggested generator containing permanent magnets at rotor, fan and electronic module according to the invention in the area of radial surfaces of the stator end windings there is a centrifugal radial fan made in form of plates at the rotor, at that axes of magnets at the rotor are located at the angle towards the rotor axis and electronic module is located in space between the stator winding and rotor shaft. |
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Proposed permanent magnet motor consists of n equal modules, each of which includes a housing, a stator with phase windings, a rotor with constant magnets, which are magnetised in radial direction. Similar phase windings of adjacent modules are connected in series, housings and rotors of modules are connected to each other mechanically, and each module includes circular orientation elements of the stator with phase windings and rotors. At that, according to this invention, in each rotor, one half of magnets is offset relative to the other half in a circumfenertial direction by the half of the tooth division of stator tzs, and in adjacent modules, similar magnets of rotors are offset in a circumferential direction through value tzs/(2n). |
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Reduction magnetoelectric machine with pole gear-type inductor Invention refers to design of contactless magnetoelectric machines with electromagnetic reduction, and can be used in direct drives, in automation systems, in mechanisms with high moments on the shaft and low rotation frequencies of the shaft, as well as high-frequency electric generators and synchronous frequency converters. The proposed reduction magnetoelectric machine with pole gear-type inductor includes stator, the armature core of which is charged and has salient poles, on inner surface of which elementary teeth are made, coil m-phase armature winding, each coil of which is arranged on the corresponding salient pole of the armature, one on each pole, and rotor containing an inductor with toothed poles with equal number of elementary teeth on each pole, which are symmetrically distributed along cylindrical surface; constant magnets magnetised in tangential direction are located between toothed poles of the inductor. When performing certain relations between the number of salient poles of the armature, number of elementary teeth on salient pole of the armature, number of salient armature poles in the phase, total number of armature teeth, number of toothed poles of the inductor, total number of inductor teeth, number of elementary teeth on toothed pole of the inductor and number of phases of m-phase armature winding of reduction magnetoelectric machine with pole toothed inductor, the method is implemented. |
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Electric motor comprises a salient-pole stator with a control winding and a rotor with poles from permanent magnets arranged on ends and adjacent parts of side surfaces of a rotor magnetic conductor. Between adjacent magnets of the rotor pole arranged on the end and adjacent parts of side surfaces of the rotor magnetic conductor, additional magnets are introduced, polarity of which matches polarity of the rotor pole. |
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Magnetoelectric machine rotor system 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. |
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Electric machine comprises a tight body, in the cavity of which a laminated stator core is installed with open slots, where winding coils are arranged, and a rotor. At the same time the laminated stator core is equipped with radial packet-to-packet ventilation channels, aerodynamically communicated longitudinal channels of the body with inlet holes communicated via a filter with environment, conductors of the winding of each stator slot are fixed with a wedge and a key insert contacting with it, the cross section of which is arranged as capable of fixing the key insert back under the slot wedge, and the section of the ledge corresponds to the section of the slot splint, the surface of the key insert back along its entire length is equipped with a longitudinal chute communicated with packet-to-packet ventilation channels of the stator core, volumes of key inserts protruding above the surface of the stator core cavity are combined into a tubular bushing, preferably made from segments, with formation of the inner surface of cylindrical shape, besides, in the cavity of the body there are cylindrical bushings installed, the diameter of the cavity in which is equal to the diameter of the tubular bushing, between ends of the stator core and ends of cylindrical bushings facing them there are thrust rings installed, the cavity of which exceeds the diameter of the cylindrical cavity of the stator core, equipped with a collar, covering a part of the outer surface of the cylindrical bushing. Thrust rings are made of non-magnetic material and are fixed with a stator core, cylindrical bushings are installed as capable of radial displacement relative to the longitudinal axis of the cylindrical cavity of the stator core, for this purpose contacts of bushings with the body, end shield and thrust rings are equipped with sealing rings made with the possibility of elastic deformation radially and along the relatively longitudinal axis of the stator core. The electric machine comprises an inductor with the outer cylindrical surface made of poles, permanent magnets, non-magnet wedges, a shaft, the length of which exceeds the length of the inductor, besides, with the inductor ends there are end cylindrical bushings fixed rigidly, which are made of a non-magnetic material and arranged aflush with the outer surface of the inductor. |
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Invention describes direct rotation generator that includes holder of iron cores and rotating shaft arranged on holder of iron cores. The first and the second rotating discs are located on two corresponding ends of rotating shaft. The first iron core is located on holder of iron cores, and the first winding is located at the periphery of holder of iron cores. The first sealing plate is located on the first rotating disc; the first magnet is located on the first rotating disc or on the first sealing plate, and surface of the first magnet and surface of the first sealing plate share one surface. The fourth magnet is located on the second rotating disc. The first magnet and the fourth magnet correspond to two ends of the first iron core, and poles of the first and the fourth magnets, which face each other, are opposite. One end of the first iron core includes liquid tank that is filled with magnetic liquid; at that, end of the first iron core, which is filled with magnetic liquid, contacts the first sealing plate. The main magnetic flux of direct rotation generator and magnetic flux created with induced current are horizontal and parallel to iron core, which considerably reduces the impact of resistance on rotation of iron core and magnets. |
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In the method to control a frequency-controlled induction electric drive with a short-circuited rotor there is a setter used arranged as a relay controller, from which a signal of optimum accuracy arrives to an input of frequency converter speed control. A tracking system comprises a frequency converter implementing vector control, an induction motor with a short-circuited rotor. The setter comprises a sensor of phase currents, a sensor of instantaneous speed signal value, a sensor of phase voltages, a converter of current phase number, a vector-analyser, a converter of voltage phase number, rotators of current and voltage, a unit of parametric coefficients, a unit of switching function coefficients, a unit of summators, a unit of multiplication, a summator, a unit of setting signals, a unit to produce a setting signal for rotor flux linkage and an appropriate coefficient of PI-controller, a unit to produce a setting signal for rotor flux linkage and an appropriate PI-controller coefficient, a relay with high switching frequency, a scaling unit, a multiplier, a selector and a switch connected as specified in application materials. |
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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). |
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Axial two-input contactless dynamo Axial two-input contactless dynamo includes body, permanent multipolar magnet of induction coil subexciter, lateral axial magnetic conductor with polyphase armature winding of subexciter, single-phase winding of subexcitor and auxiliary excitation winding of exciter which is connected to DC power supply source through contacts, inner axial magnetic conductor with polyphase armature winding of exciter and single-phase excitation winding of main generator, lateral axial magnetic conductor with polyphase armature winding of main generator, shaft fixed in bearing assemblies and rigidly bound with permanent multipolar magnet of induction coil subexciter and inner axial magnetic conductor by means of respective discs. Single-phase excitation winding of exciter is connected to polyphase armature winding of subexciter through polyphase double-wave rectifier. Single-phase excitation winding of main generator is connected to polyphase armature winding of exciter through polyphase double-wave rectifier. |
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Electric machine rotor comprises a hollow shaft of non-magnetic material and a cylinder placed on it made of magnetic-soft material with high magnetic permeability, in longitudinal radial slots of which there are permanent magnets fixed with non-magnet metal wedges, the outer surface of which complies with curvature of the outer surface of the cylinder, at the same time, according to this invention the cylinder is rigidly fixed to the hollow shaft and non-magnet metal wedges along the entire area of their contacts, and rotor ends are rigidly fixed with cylindrical bushings made of non-magnetic material, coaxial and rigidly fixed with the hollow shaft, besides, cylindrical bushings are equipped with through bores aligned in parallel to the longitudinal axis of the cylinder, at the same time the through bores match longitudinal radial slots of the cylinder in quantity and location and exceed their dimensions by the value sufficient for free passage of permanent magnets through them, besides, the permanent magnets are equipped with facilities of their fixation in longitudinal radial slots of the cylindrical bushings, besides, the external surface of the cylinder is equipped with a bandage made by winding of a flexible thread from high-strength non-magnetic material, for instance, a carbon fibre, at the same time the external surface of the bandage is of cylindrical shape that complies in diameter and roughness to the specified cylindrical bushings. Threads in the bandage are fixed by impregnation with hardening synthetic resins. Facilities for fixation of permanent magnets in longitudinal radial slots of the cylinder are made of parts from non-magnetic material that follow the cross section of through bores in the cylindrical bushings and are tightly installed in the through bores, in contact with the ends of the permanent magnets. Besides, the free end of at least one cylindrical bushing is closed with a screwed-in or a pressed cover. Besides, to fix the rigidly connected parts of the rotor, vacuum-diffusion welding is used. |
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Electric machine rotor comprises a hollow shaft of non-magnetic material and a cylinder placed on it made of magnetic-soft material with high magnetic permeability, in longitudinal radial slots of which there are permanent magnets fixed with non-magnet metal wedges, the outer surface of which complies with curvature of the outer surface of the cylinder, at the same time, according to this invention the cylinder is rigidly fixed to the hollow shaft and non-magnet metal wedges along the entire area of their contacts, and rotor ends are rigidly fixed with cylindrical bushings made of non-magnetic material, coaxial and rigidly fixed with the hollow shaft, besides, cylindrical bushings are equipped with through bores aligned in parallel to the longitudinal axis of the cylinder, at the same time the through bores match longitudinal radial slots of the cylinder in quantity and location and exceed their dimensions by the value sufficient for free passage of permanent magnets through them, besides, the permanent magnets are equipped with facilities of their fixation in longitudinal radial slots of the cylindrical bushings. |
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Non-contact reduction magnetoelectric machine with axial excitation Invention refers to the design of non-contact magnetic electric machines with electromagnetic reduction with axial excitation from constant magnets and can be used in automation systems, in military and space engineering, in domestic equipment, as motorised wheels, motorised drums, starter-generators, electric steering wheel boosters, lifting mechanisms, electric drives of concrete mixers, belt conveyors, liquid transfer pumps, mechanisms with high torques on the shaft and low frequencies of the shaft rotation, as direct drives without using any mechanical reduction gears, as direct drives without using any mechanical reduction gears, as well as wind-driven generators, hydraulic generators, high-frequency electric generators, synchronous frequency converters, and as controlled stepped hybrid motors. Non-contact magnetic electric reduction machine with axial excitation includes stator the armature core of which consists of insulated electrotechnical steel plates with high magnetic permeability, and has salient poles on inner surface of which there are elementary teeth, coil m-phase armature winding, each coil of which is arranged on the appropriate salient pole of armature, and ferromagnetic rotor without winding, which contains inductor with odd and even toothed cores with equal number of teeth on each core; odd and even toothed cores of inductor are made in the form of packs consisting of insulated electrotechnical steel plates with high magnetic permeability; number of inductor cores is not less than two; even inductor cores are offset relative to odd ones in tangential direction through the half of their toothed division; between magnetic conductors of inductor there located are ring-shaped layers of segmental constant magnets axially magnetised in one direction. At that, for serviceability of non-contact magnetic electric reduction machine with axial excitation there shall be met certain relations between the number of salient poles of armature, number of elementary teeth on salient pole of armature, number of salient poles of armature in phase, total number of armature teeth, number of teeth on each inductor core and number of phases of m-phase armature winding. |
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Non-contact magnetoelectric machine with axial excitation Invention refers to the design of non-contact synchronous electric machines with axial excitation and can be used in wide range of frequencies of machine shaft rotation (from units of revolutions per minute to several tens of thousands of revolutions per minute) in automation systems, independent electric equipment systems, in military, space engineering, on aviation and automobile transport, as traction controlled and non-controlled electric actuators, wind-driven generators, multiphase synchronous motors, multi-phase high-frequency synchronous AC electric generators and multiphase generators of frequency converters (including three-phase systems), as well as at rectification of output variable voltage and current of generators by means of semiconductor rectifying devices and with possibility of using smoothing filters to reduce fluctuations of output parameters - as DC (rectified current) power supply sources. Stator of the proposed magnetoelectric non-contact machine with axial excitation contains odd and even armature cores. Each core of armature has laminated pack consisting of insulated electrotechnical steel plates with high permeability with salient poles of armature. Cores of armature, the number of which is at least two, are fixed in non-magnetic housing. On salient poles of armature there located is coil multi-phase winding of armature, each coil of which envelopes one of salient poles of armature of each armature core, which are located opposite each other in axial direction. Ring-shaped layers of segmental constant magnets are located between armature cores. In ring-shaped layers the constant magnets adjoin odd armature cores in axial direction by means of one magnetic polarity, and they adjoin even cores with the other magnetic polarity. Number of ring-shaped layers of segmental constant magnets is one less than the number of armature cores. Rotor without winding includes non-magnetic shaft with soft magnetic bushing put on it, on which there coaxially located are odd and even rotor magnetic conductors with pole projections, which are represented with laminated packs and consist of insulated electrotechnical steel plates with high magnetic permeability. Number of magnetic conductors of rotor is equal to number of armature cores. Odd and even rotor magnetic conductors are located relative to the appropriate odd and even armature cores and have the same active length in axial direction. Even rotor magnetic conductors are offset relative to odd magnetic conductors in tangential direction through the half of pole pitch of rotor magnetic conductor. At that, certain ratios are fulfilled between the number of salient armature poles, number of phases of multi-phase coil winding of armature, number of salient poles of armature in phase and number of pole projections of each magnetic conductor of the rotor. |
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Non-contact reduction machine with axial excitation Non-contact reduction machine with axial excitation includes stator with housing made from soft magnetic material with odd and even packs of stator, which are laminated and consist of insulated electrotechnical steel plates with high magnetic permeability, and the number of which is not less than two, non-magnetic shaft; stator packs contain salient poles uniformly distributed along cylindrical surface, on inner surface of which there are elementary teeth; stator packs in tangential direction are located so that axes of their salient poles located opposite each other in axial direction coincide; odd and even rotor packs the number of which is equal to number of stator packs are pressed on the appropriate odd and even magnetic conductors of rotor, which are put on non-magnetic bushing installed on non-magnetic shaft; rotor packs contain teeth uniformly distributed along cylindrical surface; even packs of rotor are offset relative to odd rotor packs in tangential direction through the half of tooth division of rotor pack; between rotor magnetic conductors there located are ring-shaped layers of constant magnets axially magnetised in one direction; number of ring-shaped layers of constant magnets is one less than number of rotor packs; on salient poles of stator packs there is coil m-phase armature winding each coil of which in axial direction envelopes the appropriate salient poles of even and odd stator packs of one pole of each pack; excitation winding of inductor is made in the form of ring-shaped coils with longitudinal axis coinciding with longitudinal axis of machine; number of ring-shaped coils of excitation winding of inductor is one less than the number of stator packs. At that, for serviceability of machine there shall be certain relations between the number of salient poles of armature, number of elementary teeth on salient pole of armature, number of salient poles of armature in phase, total number of armature teeth, number of teeth on each pack of rotor and number of phases of m-phase armature winding. |
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Electric machine of double rotation Electrical machine of double rotation includes stator, rotors installed so that they can rotate, the first blades that are connected to the first rotor and are rotated with the first rotor in the first direction, the second blades that are connected to the second rotor and are rotated with the second rotor in the second direction, shafts of rotors, and bearings that allow rotation of shafts, load-carrying housing; the first blades and the second blades are arranged outside the housing; stator is made in the form of individual teeth with winding without yoke, and rotors are made in the form of concentric sleeves from material with high magnetic permeability, which are located on outer and inner side of stator; on sleeves there fixed are radially magnetised constant magnets; polarity of neighbouring constant magnets alternates; on each tooth there located is concentric winding insulated from housing; number of poles of the first rotor is equal to the number of periods of the first fundamental harmonic of magnetomotive force of stator winding; number of poles of the second rotor is equal to the number of periods of the second fundamental harmonic of magnetomotive force of stator winding; rotors are not attached to each other and directions of their rotation are opposite. |
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Device intended to retain at least one constant magnet creating magnetic flow on surface of rotor of electrical machine during cooling of the machine, which contains at least one slot sunken from surface and spreading from one end of the above surface, and at least one clamping shaped element inserted at least in one appropriate slot having the projection projecting beyond the surface to come into contact at least with one magnet; at that, at least one slot and at least one clamping shaped element have the shape providing the possibility of retaining at least one clamping shaped element at least in one corresponding slot for retention at least of one magnet brought into contact on surface of the device. |
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Contactless magnetoelectric machine with axial excitation Invention may be used in wide range of machine shaft rotation frequencies (from several rpm to several tens of thousands rpm) in automatics systems, in autonomous electric equipment systems, in military, space engineering, household equipment, on aviation and motor transport, as traction controlled and uncontrolled electric drives, submersible oil pumps, wind-powered generators, hydraulic generators, multi-phase synchronous electric motors, multiphase high-frequency synchronous electric AC generators and multi-phase generators of frequency converters (including three-phase systems), and also, in rectification of output AC voltage and current of generators with the help of semiconductor rectifying devices and with the possibility to use smoothening filters to reduce pulsations of output parameters, as sources of supply with direct (rectified) current, exciters of synchronous generators of mobile mini-power plants, subexciters of main exciters of synchronous generators at stationary power plants. A stator of the contactless magnetoelectric machine with axial excitation comprises a charged core of an anchor with salient poles pressed in a soft magnetic body, being a magnetic conductor of an inductor, a coil multi-phase winding of the anchor, coils of which are arranged on appropriate salient poles of the anchor, one at each pole. The winding-free rotor of the machine comprises a shaft with a non-magnetic bushing placed on it, thickness of which in radial direction is considerably higher than the value of the working air gap, on which there are odd and even inductor cores with pole ledges arranged in a coaxial manner. Number of inductor cores is at least two, even cores of the inductor are displaced relative to odd cores of the inductor in tangential direction by half of pole division of the inductor core. Between cores of the inductor there are circular layers of segment permanent magnets axially magnetized in one direction and arranged in layers so that a unipolar permanent magnetic flow of the inductor is developed. Number of circular layers of segment permanent magnets is by one less than the number of inductor cores. At the same time certain ratios are met between the number of salient anchor poles, number of phases of the multi-phase coil winding of the anchor, number of salient poles of the anchor in the phase and number of pole ledges of each core in the inductor. |
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Generator includes protective housing, electric connector, at least one attachment assembly, rotor with hydraulic turbine, constant magnets and excitation windings. At that, rotor includes several discs with through radial slots in which constant magnets are installed. Poles of constant magnets are directed parallel to generator axis and alternate. Excitation windings are installed on both sides of each disc. Generator cavity is filled with lubricating fluid. On upper edge of rotor there is filling opening of lubricating fluid to the cavity of generator. Generator includes at least one pressure and temperature expansion compensator interconnected with generator cavity. |
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Borehole generator is equipped with protective housing, electric connector, at least one attachment fitting, rotor with hydraulic turbine, constant magnets, rotor of generator and excitation windings which are fixed inside protective housing. Magnetic coupling containing drive and driven half-couplings and magnetic permeable partition between them is installed between rotors. Discs having radial slots in which constant magnets are installed are fixed on generator rotor. Excitation windings are installed on both sides of discs. Tight magnetic permeable partition containing parts from magnetic permeable material is arranged between driven and drive half-couplings. At that, drive half-coupling is connected to rotor, and driven coupling is connected to generator rotor. Inner cavity of drive half-coupling is filled with lubricating fluid. On upper edge of rotor there is filling opening of lubricating fluid to the cavity of drive half-coupling. Generator includes at least one pressure and temperature expansion compensator interconnected with cavity of drive half-coupling. |
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Non-contact reduction machine with salient-pole armature Invention refers to low-speed high-torque electric motors, electric drives and generators, to the design of non-contact electric machines with electromagnetic reduction with combined excitation of inductor and can be used in automation systems as motorised wheels, motorised drums, starter-generators, electric steering wheel boosters, direct drives in domestic equipment, electric drives of high and average power of ships, trolleybuses, trams of the underground, concrete mixers, lifting mechanisms, belt conveyors, liquid transfer pumps, mechanisms with high torques on the shaft and low frequencies of its rotation, as direct drives without using any mechanical reduction gears, as well as wind-driven generators, hydraulic generators, high-frequency electric generators, synchronous generators of frequency converters and as controlled stepped motors. Non-contact reduction machine with salient-pole armature includes stator with housing made from soft magnetic material with odd and even packs of stator, which are laminated and consist of insulated electrotechnical steel plates with high magnetic permeability, and the number of which is not less than two, non-magnetic shaft, stator packs contain salient poles uniformly distributed along cylindrical surface, on inner surface of which there are elementary teeth, stator packs in tangential direction are located so that axes of their salient poles located opposite each other in axial direction coincide; odd and even rotor packs the number of which is equal to number stator packs are pressed on the appropriate odd and even magnetic conductors of rotor, which are put on non-magnetic bushing installed on non-magnetic shaft, rotor packs contain teeth uniformly distributed along cylindrical surface, even packs of rotor are offset relative to odd rotor packs in tangential direction through the half of tooth division of rotor pack; between rotor magnetic conductors there located are ring-shaped layers of constant magnets axially magnetised in one direction, number of ring-shaped layers of constant magnets is one less than number of rotor packs; on salient poles of stator packs there is coil m-phase armature winding each coil of which in axial direction envelopes the appropriate salient poles of even and odd stator packs of one pole of each pack; excitation winding of inductor is made in the form of ring-shaped coils with longitudinal axis coinciding with longitudinal axis of machine; number of ring-shaped coils of excitation winding of inductor is one less than the number of stator packs. At that, for serviceability of machine there shall be certain relations between the number of salient poles of armature, number of elementary teeth on salient pole of armature, number of salient poles of armature in phase, total number of armature teeth, number of teeth on each pack of rotor and number of phases of m-phase armature winding. |
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Non-contact magnetic electric reduction machine with salient-pole armature Invention refers to low-speed high-torque electric motors, electric drives and generators, to the design of non-contact magnetic electric machines with electromagnetic reduction and can be used in automation systems, in domestic equipment, as motorised wheels, motorised drums, starter-generators, electric steering wheel boosters, lifting mechanisms, electric drives of concrete mixers, belt conveyors, liquid transfer pumps, mechanisms with high torques on the shaft and low frequencies of the shaft rotation, as direct drives without using any mechanical reduction gears, as well as wind-driven generators, hydraulic generators, high-frequency electric generators, synchronous frequency converters, and as controlled stepped motors. Non-contact magnetic electric reduction machine with salient-pole armature includes stator the armature core of which consists of insulated electrotechnical steel plates with high magnetic permeability, and has salient poles on inner surface of which there are elementary teeth, coil m-phase armature winding, each coil of which is arranged on the appropriate salient pole of armature, and ferromagnetic rotor without winding, which contains inductor with odd and even toothed cores with equal number of teeth on each core, odd and even toothed cores of inductor are made in the form of packs consisting of insulated electrotechnical steel plates with high magnetic permeability, number of inductor cores is not less than two, even inductor cores are offset relative to odd ones in tangential direction through the half of its toothed division; between magnetic conductors of inductor there located are ring-shaped layers of segmental constant magnets axially magnetised in one direction. At that, for serviceability of non-contact magnetic electric reduction machine with salient-pole armature there shall be certain relations between the number of salient poles of armature, number of elementary teeth on salient pole of armature, number of salient poles of armature in phase, total number of armature teeth, number of teeth on each inductor core and number of phases of m-phase armature winding. |
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Non-contact modular synchronous magnetoelectric machine Invention can be used in automation systems as traction controlled and non-controlled electric drives, as wind generators, hydraulic generators, high-frequency electric generators, multi-phase synchronous electric motors and electric generators of frequency converters, as well as multi-phase power sources of electric current. The proposed non-contact modular synchronous magnetoelectric machine consists of modules - "elementary machines", and includes stator the armature core of which is charged and has salient poles with coil m-phase armature winding, each coil of which is arranged on the appropriate salient pole of armature, one per a pole, as well as rotor which contains inductor with salient poles with alternating polarity, which are symmetrically distributed along cylindrical surface and excited with constant magnets. At that, there are certain ratios between the number of salient armature poles, number of phases of m-phase armature winding, number of salient poles in armature module phase, number of modules and number of salient poles of inductor. |
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Non-contact modular magnetoelectric machine Invention can be used in automation systems as traction controlled and non-controlled electric drives, as wind generators, hydraulic generators, high-frequency electric generators, multi-phase synchronous electric motors and electric generators of frequency converters, as well as multi-phase power sources of electric current. The proposed non-contact modular magnetoelectric machine consists of modules of "elementary machines" and includes stator the armature core of which consists of isolated electrotechnical steel sheets with high magnetic permeability and has salient poles with coil w-phase armature winding, each coil of which is arranged on the appropriate salient pole of armature, one per a pole, as well as rotor which contains inductor with salient poles with alternating polarity, which are symmetrically distributed along cylindrical surface and excited with constant magnets. At that, there are certain ratios between the number of salient armature poles, number of phases of m-phase armature winding, number of salient poles in armature module phase, number of modules and number of salient poles of inductor. |
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Non-contact magnetic electric machine with modulated magnetomotive force of armature Invention can be used in automation systems as traction controlled and non-controlled electric drives, as wind generators, hydraulic generators, high-frequency electric generators, multi-phase synchronous electric motors and electric generators of frequency converters, as well as multi-phase power sources of electric current. The proposed non-contact magnetoelectric machine with modulated magnetomotive force of armature includes stator the armature core of which consists of isolated electrotechnical steel sheets with high magnetic permeability and has salient poles with coil w-phase armature winding, each coil of which is arranged on the appropriate salient pole of armature, one per a pole, as well as rotor which contains inductor with salient poles with alternating polarity, which are symmetrically distributed along cylindrical surface and excited with constant magnets. At that, there are certain ratios between the number of salient armature poles, number of phases of w-phase armature winding, number of salient poles of armature in phase and number of salient poles of inductor. |
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Non-contact synchronous magnetic electric machine with modulated magnetomotive force of armature Invention refers to peculiar features of the design of non-contact synchronous magnetic-electric machines and can be used in automation systems as traction controlled and non-controlled electric drives, as wind generators, hydraulic generators, high-frequency electric generators, multi-phase synchronous electric motors and electric generators of frequency converters, as well as multi-phase power sources of electric current. The proposed non-contact synchronous magnetoelectric machine with modulated magnetomotive force of armature includes stator the armature core of which consists of insulated electrotechnical steel sheets with high magnetic permeability and has express poles with coil m-phase armature winding, each coil of which is arranged on the appropriate express pole of armature, one per a pole, as well as rotor which contains inductor with express poles with alternating polarity, which are symmetrically distributed along cylindrical surface and excited with constant magnets. At that, certain ratios are fulfilled between the number of express armature poles, number of phases of m-phase armature winding, number of express poles of armature in phase and number of express poles of inductor. |
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Magnetisation system and method of rotors in form of constant magnets in electric machines There proposed is rotor (16) manufacturing system and method, as well as magnetisation method of cylindrical element of electric machine (10), in compliance with which multiple segments (28) of constant magnet are fixed around rotor spindle (24). Desired orientation directions (29) of constant magnet segments (28) are determined. Then, mounted constant magnet segments (28) are placed into magnetisation equipment (44) so that desired orientation directions (29) of constant magnet segments (28) are combined with the appropriate flow directions (74) of magnetisation equipment (44). At that, desired orientation directions of constant magnet segments have such configuration that directions of the next orientation are changed from the direction which is essentially normal to the direction of rotor rotation about D-axis of rotor pole, to the direction which is essentially tangent to rotor rotation direction about Q-axis of rotor pole; desired orientation directions of constant magnet segments are determined by means of magnetic analysis by using finite element method according to the main characteristic of which the desired orientation directions of constant magnet segments are such that almost coincide as to the direction with magnetic flow formed with the magnetisation equipment. |
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In AC electric machine, comprising rotor and stator with winding arranged in it and made of K coils, it is suggested to install coils in stator winding so that central angle α1 between axes of cross sections of sides of each coil, determining width of coil, equals α1=(360°+60°·m)/2K; number of coils K is determined by ratio K=(1+m/6)·p, where m - number of phases, p - number of pole pairs of magnetic field, at the same time p is multiple of three for m = 2 and is multiple of two for m = 3. |
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Contactless reducer electromagnetic machine Invention relates to the field of electric engineering and designs of contactless reducer electromagnetic machines with electromagnet reduction, intended for use as motor - wheels, motor - drums, direct drives in electrical appliances (electric meat grinders, washing machines, etc), electric drives of concrete mixers, weight-lifting mechanisms, belt conveyors, pumps for pumping of fluids, mechanisms with high torque on shaft and low frequencies of shaft rotation, and also as high-frequency electric generators. Proposed contactless reducer electromagnet machine comprises stator with explicit poles, on inner surface of which there are elementary cogs, m-phased focused anchor winding of which consists of coils, each coil covering an appropriate anchor pole, and winding-free ferromagnetic rotor, comprising two inductor cores displaced relative to each other in tangential direction by half of gear division, with toroid permanent magnet magnetised in axial direction and installed between cores of inductor, to develop magnetic flow of excitation. At the same time certain ratios are maintained between number of anchor poles, number of elementary teeth on anchor pole, number of anchor poles in phase, common number of anchor teeth, number of teeth on each inductor core and number of phases of anchor winding of contactless reducer electromagnetic machine. |
Another patent 2551081.