SUBSTANCE: in electromagnetic gear containing a housing with mounted stator with multiphase winding coupled to the voltage source as well as the first and second rotors rigidly fixed at the input and output shafts respectively, according to the invention stator winding is coupled to the voltage source through a regulated frequency converter and placed in grooves of the stator inner surface thus forming poles. The first rotor mounted coaxially with stator and fixed rigidly to the input shaft end is made as a squirrel cage, which rods inserted to rings made of non-magnet material form teeth of this rotor with height equal to a half width of the groove, and the second rotor placed inside the first one is made with grooves at its outer surface and short-circuited winding is placed to them, at that the stator, teeth of the first rotor and teeth of the second rotor are laminated and made of ferromagnetic thin steel plates.
EFFECT: simplifying design with potential regulation of reduction ratio.
The invention relates to mechanical engineering, electrical engineering, electromagnetic mechanisms, and particularly to a contactless electromagnetic motors, and can be used as a transfer device with adjustable gear ratio in mechanical systems with a long service life in the absence of lubrication.
Known two-stage gearbox, which is the multiplier (article Dergachev P.A., Kiryukhin VP, Kulaev J.V., Kurbatov, P.A., Molokanov O.N. "Analysis of two-stage magnetic multiplier", Zh. "Electrical engineering", No. 5, 2012, p.39-45)with three of a rotating rotor, the outer stator and the inner modulating ring outer rotor and the outer magnets of the intermediate rotor form the first stage of the multiplier. The second (intermediate) the rotor has a radially magnetized magnets on the outer and inner sides. The stator, the outer rotor and the outer magnets of the intermediate rotor form the first stage of the multiplier. The third (inner) rotor is rigidly connected with the output shaft. Internal magnets of the intermediate rotor, the second squirrel cage and the inner rotor to form a second (output) stage of the multiplier. The disadvantage of this magnetic gear is the large number of steps. The magnetic system includes four air gap. Modern Vysokoe ergaticheskie permanent magnets of the rare earth elements are of high value. Harmonics of the magnetic field in the second air gap, interacting with external magnets, create variables electromagnetic moments of the source of vibration and noise. A significant drawback of the multiplier is the lack of regulation of frequency of rotation of the output shaft.
Closest to the claimed device is an electromagnetic gear (patent RU 2012980 H02K 16/00, H02K 51/00)containing a stator with two polyphase windings, a primary rotor excitation system, the secondary rotor winding, the rectifier and the inverter, and the input of the rectifier and the inverter output is connected respectively to the two windings of the stator, the rectifier output and the inverter input interconnected with the stator and rotor is the end, the stator winding is placed on its two ends, in front of which are mounted rotors. On the input shaft of the gearbox secured one of the rotors, where the magnetic core and winding; the output shaft is fixed the other rotor having a different magnetic circuit and a short-circuited winding. Between the rotors coaxially them and each other are the stators with their cores and multi-phase (e.g. three-phase) windings. A stator fixed in the housing with bearings with shields. Each of the shafts rotates in two bearings. Winding of the stator is connected in through semiconductor inverter with rectifier and dependent inverter.
The direction of rotation of the output shaft (reverse) is achieved by changing the control algorithm inverter. For convenience, the control mode of the electromagnetic gearbox uses a microprocessor-based device that can provide automatic control according to a given law.
The disadvantage of this electromagnetic gearbox design is the complexity and regulation, significant losses. This is due to the presence of two polyphase windings on the stator, the two rotor windings, the execution of the stator and rotor end, and control is performed through two channels: the frequency of the voltage supplied to the stator, and the current supplied to the excitation winding of the rotor. Use adjustable rectifier and inverter to power two windings with their algorithms, and you need a microprocessor device. This complicates the design, complicates the regulation, leads to unnecessary losses. The disadvantage of the prototype is associated with its complexity and correspondingly low reliability when used in power transmission.
The claimed invention is directed to the solution of the technical problem of creating a simple and inexpensive design of electromagnetic gearbox, which can be used as a reducer with adjustable rate reduction.
Technical is the definition of the claimed device is to simplify the design while maintaining the possibility of regulation of the reduction coefficient.
This technical result is achieved by the fact that in the electromagnetic gearbox, comprising a housing defined therein a stator with a multiphase winding, is connected to the voltage source and the first and second rotors, is rigidly mounted on the input and output shafts, respectively, in accordance with the invention, the stator winding is connected to the voltage source through an adjustable frequency Converter and placed in the slots of the inner surface of the stator with the formation of poles of the first rotor located coaxially with the stator and rigidly connected with the end of the input shaft, made in the form of a squirrel cage rods which are inserted into the rings of non-magnetic material, form the teeth of the rotor, whose height is equal to half the width of the groove, and the second rotor located inside the first, made with grooves on its outer surface, which is filled squirrel-cage winding, and the stator teeth of the first rotor and the teeth of the second rotor is made of laminated ferromagnetic sheet steel
Figure 1 and figure 2 presents the schematic structural diagram of the inventive electromagnetic gearbox.
In the electromagnetic gearbox input shaft 1 is mounted for rotation in the bearings of the shield 9, body 8. Still mounted in the housing 8 of the stator 3 done the N. of laminated sheets of cold-rolled electrical steel with grooves on its inner surface. In the slots of the stator 3 is a multiphase winding 4, forming a pair of stator poles, the number of which is equal to p1. The winding 4 is connected to a regulated frequency Converter 5. Coaxial stator mounted rigidly connected with the end of the input shaft 1, for rotation together with him in the bearings, the first rotor 2. The rotor 2 is made in the form of a squirrel cage rods which are made of laminated ferromagnetic thin rectangular plates, electrical steel and have the shape of a rectangular prism, and rods secured in the rings 11, 12 of nonmagnetic material. These rods form the teeth of the rotor 2, the number of which is equal to z1moreover , the height h of their laminated prisms of rectangular cross-section more than half the width bn of the slots, to increase the depth of modulation of the magnetic field of the ferromagnetic squirrel cages. The inner rotor 6 is made of laminated electrical steel, with grooves on its outer surface, which is filled squirrel-cage winding 13, for example, from aluminum, rigidly mounted on the output shaft 7 rotating in bearings shields 9 and 10 of the body 8.
Electromagnetic gearbox works as follows. Conclusions winding 4 of the stator 3 serves voltage from the adjustable frequency Converter 5. In the magnetic field of the stator 3 can move in space with a corner with what speed (the minus sign is implemented by the Converter when changing the sequence of phases) and can be stationary (a special case of the gearbox control). The resultant magnetic field of the stator interacts with the outer side of the rotating rotor 2, with z1ferromagnetic cores, forming with the inner side of the rotor 2, the magnetic field with the number of pole pairs equal to the difference between (z1-p1). Wave magnetic induction rotor 2, which is in the vicinity of z1and p1will have a relatively small number of pairs of poles. The inner rotor 6 will be carried away by a wave inductionon the inner side of the rotor 2 rotating with velocity Ω2=ΩC(1-s), Ω2(1-s), where s is the slip of the rotor, ΩC- synchronous rotation speed of the rotor. The synchronous speed of rotation of the output shaft ΩCwill be proportional to the speed of rotation of the input shaft Ω1and angular frequency ω stator voltage.
and the speed of rotation of the output shaft 7
If the voltage, frequency ω=0 (the magnetic field is constant), then the rotation of the input shaft 1 with a speed Ω1the angular velocity Ω2the output shaft 7 is proportional to the ratio of reduction i.
If the angular velocity of the input shaft 1 is equal to zero Ω1=0 and the voltage, frequency ω>0, the magnetic field of the stator rotates with angular velocityand communicates with the outer side of the ferromagnetic rotor 2. On the inner side of the rotor 2, the magnetic field with the number of pole pairs equal to the difference between (z1-p1). This Malopolskie magnetic field interacts with the teeth of the second rotor 6, with angular velocity Ω2.
If the angular velocity Ω1the input shaft 1 and the frequency of the supply voltage of the stator 3 ω>0, the angular velocity Ω2the output shaft 7 depends on the frequency ω, the angular velocity Ω1the input shaft 1 and the slip s according to the formula:
To change (control) the reduction coefficient gradually or stepwise, it is necessary gradually or stepwise to change the frequency ω of the supply voltage of the stator 3.
Such electromagnetic gearbox is streamlined design by performing winding rotors and one stator with one multiphase, for example, three-phase winding. While the inventive gearbox has a high specific torque, smooth change in speed of the output shaft of the gearbox relative to the speed of the input shaft (eliminate the frequency of the stator voltage), simplicity and ease of use, lack of permanent magnets. The gearbox can be used in various transport systems, wind power as a multiplier and so on. There is an opportunity to create a system to automatically maintain the output parameters of the gearbox due to the variable control of the ratio of reduction in function of input speed.
Electromagnetic gearbox, comprising a housing defined therein a stator with a multiphase winding, is connected to the voltage source and the first and second rotors, is rigidly mounted on the input and output shafts, respectively, wherein the stator winding is connected to the voltage source through an adjustable frequency Converter and placed in the slots of the inner surface of the stator with the formation of poles of the first rotor located coaxially with the stator and rigidly connected with the end of the input shaft, made in the form of a squirrel cage rods which are inserted into the rings of nonmagnetic material, to form the teeth of the rotor, whose height is equal to half the width of the groove, and the second rotor located inside the first, made with grooves on its outer surface, which is filled squirrel-cage winding, and the stator teeth of the first rotor and the teeth of the second rotor is made of laminated interrogantes sheet steel.
SUBSTANCE: invention is referred to electric engineering and it can be used for manufacturing of airspace carrier vehicles and space vehicles and drives for land transportation. Electrodynamic pull in direction of force momentum vector is generated by interaction of magnetic flux vector of closed core made of dielectric ferromagnetic material with electric-field vector orthogonal to it. The above interaction takes place in dielectric magnetic core between layers covering external and internal surfaces of the closed core.
EFFECT: improving pulling force and efficiency factor due to decrease of power supply losses.
SUBSTANCE: method includes interaction of electric charges generated under the action of voltage of an alternating current source in the region of electrodes, the number of which is a multiple of two, mounted perpendicular to end surfaces inside a closed current conductor filled with an electroconductive medium - second-class conductor, with the electric field strength vector generated between metal plates, mounted in pairs on the end surfaces of the closed current conductor in the region of each electrode.
EFFECT: reduced loss of electric power, increase in pulling force and high efficiency.
SUBSTANCE: electrodynamic traction in direction of the force pulse vector is created by interaction of the vector of magnetic induction in a closed magnetic conductor made of an electroconductive ferromagnetic material, with an orthogonal vector of electric dipole that arises in the electroconductive magnetic conductor between electrodes that cover the outer and inner surfaces of the closed magnetic conductor.
EFFECT: increased traction force, higher efficiency due to reduced energy losses.
SUBSTANCE: in electrical machine the second armature winding is made combined and located in stator slots of the main magnet core; it is equipped with capacitor bank. Second inductor winding is also combines, multi-phase, short-circuited; it is located in stator slots of the main magnet core. The first winding of rotor is connected to toroidal windings of auxiliary magnet core of the rotor; the first winding of stator is connected to output of frequency converter which converts electric energy of current frequency of the second armature winding to required value of control frequency and delivers it to stator winding of the main magnet core in order to create excitation current and rotating electromagnetic field with this control frequency. Control frequency is set at the output so that frequency of output current is permanent notwithstanding frequency of drive rotation.
EFFECT: reducing weight and overall dimensions and improving cooling and ventilation systems.
SUBSTANCE: magnetic reducer comprises a stator with a magnetic conductor, having teeth, alternating hollow cylinders of the stator and rotor of slow rotation with ferromagnetic and non-magnetic elements, and a rotor of fast rotation with ferromagnetic and non-magnetic elements. At the same time, according to the invention, the magnetic reducer comprises a fixed inductor of magnetic field, arranged outside the tooth-slot area, and the number of ferromagnetic elements of the rotor of fast rotation is equal to the difference of the number of ferromagnetic elements of hollow cylinders of the stator and rotor of slow rotation. Due to availability of non-magnetic rings in the reducer, which connect hollow cylinders of the stator with the magnetic conductor of the stator, and a sealing disc, the reducer is made with tight separation of fast and slow rotation rotors cavities and as capable of torque transfer to a tight volume, and manufacturer of a fast rotation rotor in the form of a hollow cylinder made it possible to improve dynamic characteristics.
EFFECT: development of a reducer with tight separation of cavities of fast and slow rotation rotors, in which there is possibility to transfer torque into a tight volume, improved dynamic characteristics of a contactless magnetic reducer.
SUBSTANCE: axial cascade electric drive comprises two coaxially connected electric motors, besides, magnetic systems of two electric motors are made axial and are arranged in one body and on a common shaft, which is horizontally fixed in bearing units of the body, besides, by one side the stator of one electric motor is rigidly connected to the body, and on its other side between the three-phase winding and the shaft hole there are coils of controlled couplings, which are located oppositely to two rings of large and small diameters from a non-magnetic material, a rotor arranged on the bearing, at the other side of which there are ring-shaped slots, the free space of which is filled with a ferromagnetic powder. At the same time, according to the invention, the rotor of the other electric motor is arranged on the bearing and has a ledge in the form of a wide thin ring from the same material as the rotor itself, and enters the slot of the large diameter of the rotor of the other electric motor, providing when connected to the network of one coil of the controlled coupling rigid connection of the rotor of one electric motor with the rotor of the other electric motor, the stator of which is rigidly connected with the shaft, besides, between the rotor of one and rotor of the other electric motor there is a metal part arranged rigidly in the form of a hollow sleeve, with the ledge entering the slot of small diameter of the rotor of one of electric motors, providing when supplying voltage of the supply network to the other coil of the controlled coupling the rigid connection of the rotor of one of electric motors with the common shaft, which is the output one, and on the rotor of the other electric motor there is a ledge of magnetic material, which enters the body of the ferropowder coupling fixed on the body of the electric drive, besides, additionally comprising a current pickup device, the fixed part of which is rigidly fixed on the body of the electric drive, and the movable part is installed on the shaft and supplies electric energy for the widing of the stator rigidly connected to the shaft.
EFFECT: invention provides for getting high speeds of rotation, close to a double rated one at rated value of the torque value, or getting a double torque at rated speed of rotation for a different range of capacities of an electric drive with simultaneous increase of such drive operation reliability.
2 cl, 1 dwg
SUBSTANCE: magnetic gear comprises the following components installed coaxially on a single shaft: a rotor of quick rotation with permanent magnets and pole tips, on the other shaft by means of a non-magnetic disc there is a rotor of slow rotation installed in the form of at least one hollow cylinder, a stator comprising a magnetic core with teeth on its inner surface and at least one hollow cylinder mechanically connected by its one end to the body via a non-magnetic ring, permanent magnets of the rotor of quick rotation are magnetised tangentially and oppositely and are arranged between wedge-shaped pole tips, hollow cylinders of the stator and rotor of slow rotation have alternating ferromagnetic and non-magnetic elements, directed along the axis of rotation, at the same time the gear is equipped with a bearing shield installed on the shaft of the rotor of quick rotation and tightly and mechanically connected to the other end of the hollow cylinder of the stator arranged between the rotor of quick rotation and the hollow cylinder of the slow rotation rotor.
EFFECT: possibility to tightly separate cavities of rotors of quick and slow rotation, improved conditions of accurate assembly and operation of rotors of quick and slow rotation.
3 cl, 3 dwg
SUBSTANCE: invention refers to cascade electric actuators of rotational movement, which consist at least of two asynchronous motors of the same type, and can be used at creation of electric actuators with controlled rotation speed from nominal to double nominal at constant moment, or actuators with double moment at constant nominal rotation speed, as well as at creation of other types of electric actuators. Controlled cascade electric actuator includes two electric motors coaxially installed in housing, each of which consists of rotor and stator; besides, stator of the first electric motor is fixed on housing, and its rotor is fixed on its shaft; fastening rings two of which are fixed on the housing, and the other one is fixed on shaft of the first electric motor, electromagnetic clutches fixed on the housing of electric actuator, three-phase power supply system; rotor of the second electric motor is movable and installed so that it can be freely rotated relative to its shaft, and stator of the second electric motor is fixed on its shaft. Fastening ring rigidly fixed on housing of controlled cascade electric actuator on which there installed are three fixed friction semi-clutches one of which has the possibility of being pulled in order to fix the friction gasket (installed on the first shaft) of its movable semi-clutch sliding along splined recesses of electric motor shaft with freely rotating rotor; the other semi-clutch has the possibility of being pulled in order to fix to the same friction gasket of its semi-clutch entering the cavity of housing of movable rotor, which is coaxial to the above semi-clutch, and the third semi-clutch has the possibility of being pulled in order to fix to the other friction gasket fixed on the electric actuator housing of its semi-clutch entering the cavity of movable rotor housing, which is coaxial to the above semi-clutch.
EFFECT: improved design of cascade electric actuator due to operation improvement of system of electromagnetic clutches and power supply system of one of asynchronous motors, which provides obtaining of high rotation speeds close to double nominal, at nominal value of moment or obtaining of double moment at nominal rotation speed.
3 cl, 1 dwg
SUBSTANCE: accumulator contains a vacuumised housing, a fly-wheel in the form of a vertical cylindrical tubular rotor with a motor generator set with a stator and a drive disc. The support system is composed of a needle support bearing with a bearing socket in the lower part and a magnetic bearing with a permanent magnet in the upper part of the rotor. The supports rotary elements are attached to the partitions installed inside the rotor tube at a certain distance from its butt ends. The horizontal plane passing through the boundary of interaction between the support rotary and non-rotary elements cross the rotation axis in the unit of the rotor axle bend shape at the operating rotation rate. The accumulator housing is installed into an accumulator assembly.
EFFECT: reduction of aerodynamic losses in the vacuumised housing and losses in the rotor support units.
2 cl, 6 dwg
FIELD: electric engineering.
SUBSTANCE: invention relates to electric engineering, to electric energy and power plants, in particular, and may be used as a drive for all types of transport - land, water, air and space transportation and etc. The proposed propelling agent includes electron discharge device (1), filled with operating substance and electric arc electrodes (2, 3), control (4), operating (6) and polarising (8) electrodes. The induction coil is comprised of windings - primary (11), current (12) and electric arc (13) and core piece (14) having an armature (15) located in the clearance and connected with current coil (12) through three position switch (16). The ends of primary winding (17) are connected with polarising electrodes (8) and with the middle point (18) through sequential circuits of resonance capacitors (9) and with the middle point which is coupled with a cathode (3) and grounded. The electric arc coil (13) is linked with electric arc electrodes (2, 3) through voltage transducer (20) with its input having connections with a.c. power source (22). The control (4) and operating (6) electrodes are coupled with series circuits of resonance capacitors (9) with antiphase polarising (8) electrodes.
EFFECT: increased power, and reliability of electrodynamic propelling agent operation, as well as high reaction to operation control and transport control.
FIELD: engines and pumps.
SUBSTANCE: differential gearing with one input and two outputs are used as a gear ratio converter in proposed motor. Gearing input is engaged with motor rotor. One of said outputs is engaged with driven shaft to receive higher torque while second output is engaged with second rotor inductively coupled with motor rotor. Driven shaft rpm is varied by changing the second rotor circuit electric load.
EFFECT: optimum acceleration of the motor, higher efficiency, simplified control.
SUBSTANCE: invention relates to electrical engineering, and namely to low-speed electric generators, and it can be used in wind-driven power plants. In magnetoelectric generator the rotor is provided with constant magnets 3, 4, and stator contains two parallel plates 5 and 6, between which annular windings 7 are arranged. The rotor is made of two parallel discs 1 and 2 fixed on shaft, on each of which ring-shaped rows of constant magnets 3, 4 are arranged. Polarity of constant magnets 3, 4 of each row alternates. Herewith poles of constant magnets 3, 4 of one row are faced to opposite poles of constant magnets 3, 4 of the other row. Annular windings 7 of the stator are made as equilateral trapezia with lateral sides 8, 9 located radially in relation to the rotor rotation axis 10 and areas 11, 12 of annular windings at trapezia bases are arc-curved; annular windings 7 are inserted by pairs one into another. Distance ℓ between areas of annular windings at the base of trapezia exceeds width b of ring-shaped row of constant magnets 3, 4. Constant magnets 3, 4 in each ring-shaped row join each other.
EFFECT: increasing power of magnetoelectric generator with preservation of its dimensions.
7 dwg, 1 tbl
SUBSTANCE: magnetoelectric motor comprises a rotor, made of two parallel discs fixed on the shaft, on every of which there is a ring-shaped row of permanent magnets with alternating polarity. Poles of the permanent magnets arranged at one of rotor discs face the opposite poles of the magnets placed on the other disc of the rotor, the stator is placed between discs of the rotor with a gap relative to the shaft and is equipped with circular windings in the form of isosceles trapezoids, sides of which are arranged radially relative to the axis of rotor rotation. According to the invention, the stator is made in the form of two plates parallel to each other, circular windings are placed between plates, sections of circular windings in the bases of trapezoids are bent according to the arc, circular windings of one plate of the stator are inserted into circular windings of the other plate of the stator with formation of modules, besides, the distance l between sections of circular windings in bases of trapezoids exceeds the width b of the ring-shaped row of permanent magnets of the rotor.
EFFECT: increased evenness of torque on a shaft of a magnetoelectric motor and evenness of rotor rotation.
2 cl, 11 dwg
SUBSTANCE: in an electromagnetic generator a rotor is equipped with permanent magnets, and a stator comprises two parallel plates (5, 6), between which there are circular windings (7), made in the form of isosceles trapezoids, sides (8, 9) of which are arranged radially relative to the axis of rotor rotation, and sections (11, 12) of circular windings (7) in trapezoid bases are bent along the arc. The rotor is made of two parallel discs (1, 2) fixed on a shaft (10), on every of which there are ring-shaped rows of permanent magnets (3, 4) arranged on opposite surfaces, and their polarity in every row alternates. Poles of permanent magnets (3, 4) in a single row face opposite poles of permanent magnets (3, 4) of another row. Circular windings (7) are inserted into each other to form modules, at the same time the distance 6 between sections of circular windings (7) in trapezoid bases exceeds width b of the ring-shaped row of permanent magnets (3, 4). At the same time according to this invention between circular windings (7) there is an additional flat circular winding (13) in the form of an isosceles trapezoid, sides (14) of which are arranged in one plane between sides (8, 9) of other circular windings (7).
EFFECT: provision of the possibility to generate three-phase electric current.
SUBSTANCE: disclosed rotary MHD machine has disc rotors and collectors for inlet and outlet of the working medium, mounted in parallel in a housing. According to the invention, working elements which convert energy of the working medium to mechanical energy and then to electrical energy are disc rotors made from electroconductive porous material which is pervious on at least one end surface and are mounted with possibility of counter-rotation while providing electrical contact with each other on electroconductive areas of the rotor shafts which alternate with insulated areas of shafts in checkered order relative each other. Each pair of rotor discs lying in the same plane is placed between poles of permanent magnets placed in a perpendicular plane to axes of the rotors and is connected in series to only one pair of voltage contacts on shafts so as to allow series-flow of current through each disc of both rotors.
EFFECT: design of a multifunctional magnetohydrodynamic (MHD) machine, high emf generated by the MHD machine.
FIELD: electrical engineering.
SUBSTANCE: electromagnetic motor contains cylindrical induction coil consisting of magnetic core and excitation winding located in its circular groove; forward and reverse stroke armatures opposite to each other in coaxial relationship; return spring installed in the axial channel formed by end blind grooves in forward and reverse stroke armatures. Forward and reverse stroke armatures are made as disc and cylindrical parts interconnected rigidly. Cylindrical parts have diameters of different values. In cylindrical part of the forward stroke armature there is an internal blind groove which diameter is bigger than the diameter of cylindrical part of the reverse stroke armature, and it is capable to move along inner grove of the forward stroke armature. Disc parts of the armatures are oriented towards different poles of cylindrical induction coil. In the reverse stroke armature there is an axial bore with axial rod of the forward stroke armature located in it.
EFFECT: reduction of vibration level for electric motor housing, increase in performance and economical operation.
SUBSTANCE: in design of the proposed unipolar machine (UM) there are no conventional sliding brush contacts, and several disks can be easily connected in series to its electric anchor chain by means of electrically conducting belts and hollow cylinders with common magnetic system. At that, rotation shafts in the proposed UM always rotate to opposite sides, which can be provided either with individual external motors, or by any common reversing mechanism. Proposed direct current UM with two shafts can operate both in generator mode, and in motor mode.
EFFECT: sufficient increase of wear resistance, improvement of electromechanical characteristics and noticeable increase of operating voltage; enlarging application field of unipolar direct current machines.
FIELD: electrical engineering.
SUBSTANCE: magnetoelectric machine rotor system consists of two coaxial rotors. The external (outer) rotor is designed in the shape of a hollow cylinder of high-strength, non-magnetic and electrically non-conductive material with constant magnets uniformly fixed thereon; the magnets are magnetised in a radial direction and have alternating polarity. There are gaps between the external rotor magnets wherein the retaining elements are positioned made of a non-magnetic and electrically non-conductive material. The internal rotor is designed in the shape of a shaft of a magnetically soft material, toothed on the outside, the internal rotor teeth number equal to that of the external rotor permanent magnets. The internal rotor radial bearings are positioned outside the external rotor bearings. The external rotor axial bearing is represented by axial magnetic forces of interaction between the permanent magnets of the external rotor, the stator core and the shaft.
EFFECT: provision for the rotor system rotors strength margin and increasing the proper frequency to a value in excess of rotation rate.
16 cl, 3 dwg
SUBSTANCE: invention relates to the field of electrical engineering and transport machine building and may be used in development of mechanisms, in which it is necessary to change torque and rotations of an output shaft of an electric motor. According to this invention, in an electric motor a differential gear is used as a converter of transmission ratio, and the gear comprises one input and two outputs, the input of which is connected to a rotor of the electric motor, one of outputs, to which a high torque is sent, is connected with an output shaft, and the second output is connected with the second rotor, which is inductively connected with the rotor of the electric motor, and in case of their mutual rotation, it generates electric energy, and force arising at the same time, by changing which, through variation of inductive connection between rotors, the speed up rate may be controlled, as well as output shaft rotation speed, partially blocking the gear, aims to reduce mutual relative opposite rotation of the electric motor rotor and the second rotor. The second rotor is also connected with a speed-up coupling, which is connected with the body by a response part, and preventing rotation of the second rotor to the side opposite to direction of the electric motor rotor rotation.
EFFECT: multiple increase of electric motor torque in case of speeding.
SUBSTANCE: invention is referred to electric engineering and power engineering, in particular, to electromagnetic motors. The electromagnetic motor comprises a rotor arranged in the form of a shaft installed as capable of rotation of at least two discs installed on the shaft, with permanent magnets arranged along their periphery, a stator comprising electromagnets installed as capable of interaction with permanent magnets, besides, the permanent magnets are arranged in the form of cylinders, planes of ends of which are located in the radial plane of each disc, besides, permanent magnets of the first and second discs face each other with poles, and the stator comprises electromagnets in the form of solenoids without magnetic conductors installed between discs of the rotor, two start-up electromagnets, comprising non-linked magnetic conductors and installed oppositely to a permanent magnet, of any of rotor discs, a contactless induction switch installed on the stator opposite to any of permanent magnets of rotor discs with the possibility of interaction with each of permanent magnets arranged on one of rotary discs of the rotor, at the moment of permanent magnet passing through a zone of sensitivity of a sensor part of the contactless induction switch.
EFFECT: increased capacity of a motor.
FIELD: electrical engineering; electrical transmission for vehicles including those incorporating combined power units.
SUBSTANCE: proposed electromechanical power unit that has ac motor whose rotor shaft is directly coupled on one end with output shaft of heat-engine and on other end, with drive wheel through clutch, gearbox, main transmission, and differential, semiconductor converter connecting stator winding to storage battery, and control system whose outputs are connected to control inputs of semiconductor is also provided with additional intermediate rotor inserted in stator-to-rotor clearance whose shaft, and not second end of main rotor shaft, is directly coupled with drive wheels through main transmission and differential.
EFFECT: simplified design and control, reduced mass and size, enhanced reliability, speed, and efficiency of electromechanical power unit.
1 cl 2 dwg