Electric motor |
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IPC classes for russian patent Electric motor (RU 2490772):
 Structures of coil from foil and methods of their winding for axial electrodynamic machines / 2471278
Stator for electrodynamic machines comprises a coil, providing for the possibility to generate ampere-turns ("AT") of a magnetic flow. A coil comprises a foil conductor, comprising a section of foil conductor displacement, configured as capable of displacing sections of the foil conductor and an element of an excitation pole having multiple zones. Sections of the foil conductor are arranged on the element of the excitation pole, which comprises the first and second zones. The first section of the foil conductor is arranged on the first zone, and the second one - on the second zone. A section of foil conductor displacement connects the first section of the foil conductor with the second section of the foil conductor. A version of a foil coil is proposed, with an excitation pole having a surface to oppositely install conical magnets, for instance.
 Single-phase valve electric drive / 2453968
Invention relates to electric engineering, namely, to electric machines, and may be used in industrial mechanisms requiring speed control. The technical result is achieved though the control circuit of single-phase valve electric drive, which includes transistor bridge switch with one of its diagonal being meant for connecting to winding, while the other diagonal of switch bridge being linked with a power source. The control inputs of switch are coupled with control element, which operates by algorithms ensuring its operation under pulse-duration modulation. At the same time, according to the invention, the control element contains micro controller with drive, connection points with transistor switch diagonal and with two microcontroller inputs through voltage stabiliser. The third microcontroller input is connected to control electrodes of transistor switch through the driver so that the diagonals are connected in turn to power supply poles.
 Electromechanical converter / 2441308
Electromechanical converter comprises at least one stator-rotor pair, where a stator comprises cores from material with high magnetic permeability, with their ends attached to a support stator ring and aligned in parallel to the main magnetic flow, and between which there are conductors of a multiphase winding, a rotor is made in the form of two coaxially arranged outer and inner inducers - magnetic conductors from material with high magnetic permeability in the form of hollow cylinders fixed as capable of rotation relative to the stator, bearing poles arranged along circumferences with alternating polarity, inverted to the stator via working gaps and covering it, at the same time polarity of poles arranged on the inner and outer inducers opposite to each other is arranged as matching, and number p of pole pairs and number Z of stator cores are related by certain ratios for a double-phase winding (m = 2) and for a triple-phase winding (m = 3).
 Rotor of asynchronous electric machine / 2436220
Rotor of an asynchronous electric machine comprises a shaft, a ferromagnetic core fixed coaxially on the shaft - a magnetic conductor with an external surface in the form of a circular cylinder and an electric winding of "squirrel cage" type. At the same time according to this invention, the ferromagnetic core - magnetic conductor consists of longitudinal elements made of material having at least axial electroconductivity, besides, the longitudinal elements with the help of frontal conductors - links are electrically connected to each other only by their end parts, forming a winding of "squirrel cage" type.
 Device in electric machine / 2422968
Device is proposed in an electric machine, in particular, a motor, a generator or an actuator, comprising a stator with teeth (11, 12), which carry coils (15), in particular, single-layer ones, for concentrated windings, a rotor with a permanent magnet moves relative to the stator (11, 12). The stator teeth are arranged with the possibility to locate coils (15) on them generally with a rectangular hole. Advantages are achieved, if the teeth (11, 12) of the stator are made with the possibility to locate generally identical coils (15) on them, which close slots (14, 16). The teeth (11, 12) are alternating rectangular teeth that narrow/expand towards the top and form slots (14, 16) with parallel lateral sides for installation of coils (15). Narrowing teeth (22) preferably have a shorter top (23). Slots have a space to insert a semi-magnetic slot wedge (17, 18) between neighbouring teeth.
 Ac electric machine / 2411623
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.
 Short-circuited rotor with squirrel cage of asynchronous machine / 2386201
Proposed short-circuited rotor with squirrel cage comprises shaft (1) and laminated core of sheet steel (2), in laminated core of sheet steel (2) there are rotor winding (3) rods located, which at both ends of laminated core of sheet steel (2) are pulled through openings (10) of each end plate (9) and closed by short-circuited ring (4), which, being electrically conducting, connects ends of rotor winding (3) rods on one side of short-circuited rotor to squirrel cage, besides each end plate (9) comprises circumferential ledge, which at least partially covers short-circuiting ring (4) with geometric closure at its outer side, besides each end plate (9) comprises part of rotor winding (3) rod and part of short-circuiting ring (4). At the same time, according to the present invention, end plates (9) are arranged as massive and are made of stronger material compared to rods of rotor winding (3) and short-circuiting rings (4), besides rods of rotor winding (3) have bulge at their ends with increased cross section of rod (7), moreover, at least part of rotor winding (3) rods bulge lies in openings (10) of end plates (9), besides transition between bulge and short-circuiting ring (4) is arranged in the form of rounding with transitional radius (8).
 Method for manufacturing of multilayer winding of electric machine stator / 2369952
Invention is related to the field of electric engineering, namely to engines with improved excitation winding at stator. Method for manufacturing of electric machine stator multilayer winding consists in the fact that at first coils are moulded on template, then coils are assembled in windings, afterwards windings are laid in stator core, and then windings are serially connected. Coils used are template single-turn coils, which are then serially connected into wave windings, afterwards produced wave windings are laid one onto another and are connected serially into multilayer winding.
 Double-winding startor with m=3-phase 2p1=4·k- and 2р2=6·k- pole lap windings in z=144·k slots / 2362258
Invention relates to electrical engineering and electrical machine building and can be used in three-phase double-speed cage asynchronous motors. The double-winding stator of an asynchronous motor has m = 3 - phase, 2p1 = 4 k- and 2p2 = 6 k-pole lap windings in z =144 k slots, each of which is symmetrical with m' = 6 - zone of uniformly displaced windings, placed in slots in two layers. According to this invention, of the K = z windings with numbers from 1K to (z)K, the 2p1 - pole winding relates to K/2 windings with odd numbers 1K, 3K, …, (z-1)K, each containing wk1 turns and connected in 6p1 sub-groups of windings with q'1 = 6 neighbouring windings in each, and the 2p2 - pole winding relates to K/2 windings with even numbers 2K, 4K,…, (z)K, each containing wk1 turns and connected in 6p2 sub-groups of windings with q'2 = 4 neighbouring windings in each. All windings have slot pitch yk= 29, where k=1, 2; q'1 = z/12p1 and q'2 = z/12p2.
 Double-winding startor with m=3-phase 2p1=12- and 2p2=14- pole lap windings in z=144 slots / 2362257
Invention relates to electrical engineering and electrical machine building and can be used in three-phase double-speed cage asynchronous motors. . Each of the 3-phase windings with 2p1=12- and 2p2=14-pole lap windings in z=144 slots of the double-winding stator of the asynchronous motor is symmetrical with m'=6-zone from uniformly displaced windings, placed in slots in two layers. According to this invention: of the K = z windings with numbers from 1K to (z)K, the 2p1 - pole winding relates to K/2 windings with odd numbers 1K, 3K, …, (z-1)K, each containing wk1 turns and connected in 6p1 sub-groups of windings with q'1 =2 neighbouring windings in each, and the 2p2 - pole winding relates to K/2 windings with even numbers 2K, 4K,…, (z)K, each containing wk2 turns and connected, when q'2=12/7, in 6p2 sub-groups with grouping of their windings in a series 2221221, repeated six times. All windings have slot pitch yk= 11, where q'1 = z/12p1 and q'2 = z/12p2.
 Electric machine / 2489788
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.
 Generator / 2488211
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.
 Permanent magnet motor / 2484573
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).
 Reduction magnetoelectric machine with pole gear-type inductor / 2478250
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.
 Electric motor / 2476977
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.
 Magnetoelectric machine rotor system / 2475926
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.
 Electric machine / 2474945
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.
 Direct rotation generator / 2468493
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.
 Method for control of induction frequency-controlled electric drive with short-circuited rotor and tracking system for its realisation / 2458447
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.
 Electric motor / 2454774
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).
 Synchronous inductor generator / 2488934
Synchronous inductive generator contains radial spoke-shaped rotor elements and a ferromagnetic base with stator elements including excitation sources, coils and magnetic conduits. According to the invention, the stator elements are designed in the form of two modules mounted on the ferromagnetic base, the base proper oriented parallel to the spoke-shaped rotor element. The proposed synchronous inductive generator needs no specially manufactured rotor element.
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FIELD: electricity. SUBSTANCE: electric motor contains a rotor with pole permanent magnets magnetised radially and number of poles more than two and a stator consisting of a magnet core in the form of a hollow cylinder and a symmetrical three-phase biplane single-layer winding at inner surface with minimum gaps required for stator assembly between lateral surfaces of working areas of the coils. Working areas of the coils are located along the electric motor axis; at that number of coils in a phase circuit is selected as equal to the number of pole permanent magnets of the rotor. EFFECT: increasing specific electromagnetic torque of an electric motor by improvement of operating efficiency of its stator winding. 2 dwg
The invention relates to the field of electrical engineering, in particular to the Executive electromagnetic mechanisms of automation systems. The famous "Motor winding in the air gap" (U.S. patent No. 7928619, NC 1/16, NC 1/18, publ. 19.04.2011), selected as a prototype, containing a rotor with radially magnetized pole permanent magnets, the number of pairs of poles which are more than two and a stator including a magnetic core in the form of a hollow cylinder and placed on its inner surface symmetrical three-phase single-layer stator winding, the working parts of the coils which are located along the axis of the motor. While the number of coils in the phase circuit is 5, and the number of pairs of poles of the rotor - 9. At this ratio, the angular size of the coils on the middle line does not allow increasing the width of the coil and, hence, the fill factor of the conductors of a layer winding. This winding inefficiently uses the working air gap, in which it was placed, and, therefore, the motor has a low specific electromagnetic torque (per unit mass or volume). The problem to which the invention is directed, is to create a motor with the highest possible specific electromagnetic torque. The technical result achieved by carrying out the invention, with the her in the efficiency of the stator winding. This is achieved by the fact that the motor contains a rotor with radially magnetized pole permanent magnets, the number of pairs of poles which are more than two and a stator including a magnetic core in the form of a hollow cylinder and placed on its inner surface symmetrical three-phase single-layer winding, the working parts of the coils which are located along the axis of the motor, the winding is two-plane with the minimum required for the Assembly of the stator clearances between the side surfaces of the working sections of the coils, while the number of coils in the phase circuit is selected equal to the number of pole pairs of permanent magnets of the rotor. The run winding two-plane (frontal part of the coils are located in two planes) when placing sites coils with minimum required for the Assembly of the stator clearances allows you to put in the working air gap of a given size the maximum number of conductors along the axis of the motor, resulting in the efficiency of the air gap increases, and thus increases the efficiency of it is located the winding and, consequently, increases the specific electromagnetic torque of the motor. Select the number of coils in the circuit of phases equal to the number of pole pairs of permanent magnets of the rotor necessary to ensure the servant of the capacity of the proposed motor. The use of the proposed technical solution in electric motors with the number of pairs of poles less than three inefficient due to significant growth in the contribution to the resistance of the winding resistance of end parts of the coils. Figure 1 shows the motor in a state where the circuit phase And de-energized, and the circuit of phases b and C are energized; figure 2 - is the same, the section a-A. The motor consists of a rotor with permanent magnets and stator. The stator of the motor includes a magnetic core 1 in the form of a hollow cylinder and placed on its inner surface symmetrical three-phase two-plane single-layer winding 2, the working parts of the coils which are located along the axis of the motor. The coil 2 is made with the minimum required for the Assembly of the stator clearances between the side surfaces of the working sections of the coils (figure 2), while the number of coils in the phase circuit 6 and the number of pole pairs of the permanent magnets 3 of the rotor is also equal to 6. Coils per phase circuit are connected so that the direction of the current in them is the same. The rotor of the electric motor consists of a radially magnetized pole permanent magnets 3 alternating polarity arranged on the outer surface of the magnetic circuit 4. The work of the three-phase motor is considered by the example of bipolar radio frequency + low the period control voltage phases. While the magnetic axis of the coil circuits of the two phases of the winding 2 between the poles radially magnetized pole permanent magnets 3 of the rotor (position can be determined, for example, by using a Hall sensor) on the chain of these phases, direct voltage of a particular character that provides the rotation of the rotor in the desired direction. When the rotor magnetic axis of the coil circuit of each phase cross region above the Central line pole magnets 3 of the rotor defined by the angle equal to 1/3 the size of the bottom half of the field rotation of the rotor. In the beginning of the crossing occurs off phase circuit from the supply voltage. Next change the polarity of the voltage occurs at the end of the crossing of the specified area. As a result of switching voltages in the circuits of the phases on the motor shaft creates a specified electromagnetic torque. Was made a prototype of the proposed motor tests which confirmed the high efficiency of the stator winding and receiving the maximum possible specific electromagnetic torque. The motor contains a rotor with radially magnetized pole permanent magnets, the number of pairs of poles which are more than two and a stator including a magnetic core in the form of a hollow cylinder and placed on its inner surface the particular symmetrical three-phase single-layer winding, the working parts of the coils which are located along the axis of the motor, characterized in that the winding is performed with two-plane minimum required for the Assembly of the stator clearances between the side surfaces of the working sections of the coils, while the number of coils in the phase circuit is selected equal to the number of pole pairs of permanent magnets of the rotor.
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