Motor with intensive magnetic flux

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering and can be used in washing machine motors. The motor with intensive magnetic flux incorporates circular stator with the winding wound on multiple teeth arranged radially. The rotor is fitted in the stator center and comprises a circular rotor core, multiple teeth extending from the aforesaid core and towards the stator and multiple magnets arranged between the said magnets teeth. The section of the joint between the circular rotor core and the tooth is furnished with a small-diameter hole to receive the guide pin. Note also that the bridge connecting the adjacent teeth, or in the end section of the tooth abutting on the circular rotor core, is furnished with a barrier to eliminate the magnetic flux dissipation.

EFFECT: motor higher torque and smaller sizes.

7 cl, 12 dwg

 

The technical field to which the invention relates.

The present invention relates to electric motors of washing machines, and more particularly to a motor with an intense magnetic flux with internal rotation.

The level of technology

In General motors with permanent magnet depending on the configuration of the magnetic circuits are divided into a motor with a permanent magnet with surface mounting and internal motors with a permanent magnet.

For direct drive washing machines are electric motors with permanent-magnet external rotor surface mounting.

1 and 2 illustrate a motor for driving a washing machine. Figure 1 and 2 show, respectively, an exploded isometric projection and view in plan of the electric motor with external rotation, which is one type of conventional electric motors with permanent magnet with surface mounting.

The above-mentioned motor with a permanent magnet with surface mounting, in which the rotor 20 is installed outside of the stator 10 mainly includes a stator 10 and a rotor 20 mounted rotatably relative to the stator 10 so that the inner surface of the rotor 20 is separated in the radial direction from the outer surface of the stator 10 in a certain air gap.

Stat is R 10 includes an annular core 12, many teeth 15 formed on the outer circumference of the ring core 12 so that they are separated along the circumference of the core 12 from each other defined by the grooves 14, and the coil 17 is tightly wound on the respective teeth 15 and connected to an external power source.

The rotor 20 includes an annular rotary frame 22 forming the wall of the yoke, which serves as a channel for the magnetic flux, and the magnet 25, consisting of a set of elements with poles N and S arranged in the radial direction in an alternating on the inner circumference of the rotary frame 22. The rotor 20 rotates, due to the electromagnetic interaction of the above elements during the flow of electric current through the coil 17.

In the above-mentioned motor with a permanent magnet with surface mounting the stator is affixed to the outer Baku washing machine through the mounting holes 13 formed in the core 12, and the Central section of the rotary frame 22 of the rotor 20 is connected through a shaft with the inner tank or the pulsator washing machine.

Motor with permanent magnet with surface mounting no difference between the magnetic resistance due to the relative position of the magnetic poles formed by the magnetic flux of the stator 10 and the magnetic flux of the rotor 20, thereby the rotor 20 has a structure with implicitly in the reflected pole. Figure 3 shows the distribution of the magnetic flux depending on the relative position of the rotor 20 of the electric motor with a permanent magnet with surface mounting.

To increase protivoelektrodvizhushchej power of ordinary motor with a permanent magnet with surface mounting the rotor 20 has a greater length than the length of the assembled layers of the stator 10. This difference in length is called "departure". The departure is necessary to increase to a certain value of the magnetic flux of the magnet 25, which interacts with the coil 17 of the stator 10, thereby increasing protivoelektrodvizhushchej power.

Protivoelektrodvizhushchej force of the aforementioned electric motor with a permanent magnet surface mount increases proportionally to the increasing departure of the rotor 20, however, when the departure of a certain magnitude protivoelektrodvizhushchej power stops increasing and remains constant. This is caused by the design of the motor with a permanent magnet surface mount, namely, with a further increase of the length of the flight increases and the magnitude of the magnetic flux, but he is not the whole interacts with the winding, and scattered through other parts.

Figure 4 shows a graph of density of magnetic flux in the stator teeth, depending on the length change of the departure of the rotor in the usual e is tradigital with a permanent magnet with surface mounting. The magnetic flux density in the teeth is increased proportionally to the increase in the length of the departure of the rotor, and then ceases to increase and saturation, when the length of the flight exceeds approximately 6 mm Is caused by the fact that increasing the length of the flight increases the portion of the magnetic flux dissipated through other areas besides the effective magnetic flux passing through the teeth.

Accordingly, the above-described conventional motor with a permanent magnet with surface mounting is departure to increase to a certain value of the magnetic flux associated with the stator winding 10, in order to increase protivoelektrodvizhushchej force. However, because the effect of departure disappears when reaching a certain length or more, it turns out that the increase protivoelektrodvizhushchej power a conventional motor with a permanent magnet with surface mounting is limited, as is his fault.

Disclosure of inventions

The present invention has been made considering the above problems, and its objective is the creation of an electric motor with an intense magnetic flux, wherein a set of magnets placed around the circumference so that the same poles of the magnets facing each other, reducing the dispersion of the magnetic flux of the magnets and improves KRU is ASCII moment in comparison with the conventional motor of the same volume of permanent magnet with surface mounting.

In accordance with one aspect of the invention the above and other problems can be solved through the creation of an electric motor with an intense magnetic flux, comprising: an annular stator in which a winding is wound on a multitude of radially placed teeth, and is located in the center of the stator, the rotor, with many placed around the circumference of the magnets so that their poles of the same polarity facing each other and rotated by interaction with the stator.

Preferably, the stator is comprised of a ring core, a lot of radially placed on the inner circumference of the core teeth and a winding wound on the respective teeth and connected with an external power source.

More preferably, the notches for fastening the stator were formed on the outer circumference of the stator core.

It is preferable that the rotor includes an annular rotor core,

many placed radially projecting from the core in the direction of the stator teeth and the lot located between the teeth of the magnets.

Further preferably, the core or the connecting areas between the core and the teeth was formed barrier flow to prevent dispersion of the magnetic flux of the magnets.

Even more preferably, the barrier thread on the chal, at least one hole of small diameter formed in the connecting section between the core and each tooth, barrier hole formed in adjacent to the core end of each of the teeth, and bridge openings formed in sections connecting adjacent teeth.

Preferably the core of the rotor to run through a spiral of collapse.

Further, it is preferable to form the core of the rotor guide holes to add to the stack of multiple sheets by using steel rods.

Thus, the motor with the concentrated magnetic flux in accordance with the present invention includes a rotor with concentrated magnetic flux, having a set of magnets placed around the circumference so that their like poles facing each other to prevent dispersion of the magnetic flux has increased torque in comparison with the conventional motor of the same volume of permanent magnet with surface mounting, reduce production costs and contributes to the miniaturization of products.

Further, since the barrier flow is formed in the rotor core of the motor to maximize the prevention of dispersion of the magnetic flux, due to increased torque, improved General settings ele is tradigital with intense magnetic flux in accordance with the present invention.

Brief description of drawings

The foregoing objectives, features and advantages of the invention will be better understood from the subsequent detailed description and the accompanying drawings.

Figure 1 presents an exploded isometric projection of the usual electric motor with a permanent magnet surface mount;

figure 2 shows the conventional motor with a permanent magnet surface mount;

figure 3 shows the distribution of the magnetic flux depending on the relative position of the rotor of the conventional motor with a permanent magnet surface mount;

figure 4 presents a graph of the density of the magnetic flux depending on the length change of departure in a conventional motor with heavy magnet surface mount;

figure 5 shows a view in plan of an electric motor with an intense magnetic flux in accordance with the present invention;

on figa, 6B and 6C is an enlarged image of several embodiments of the barriers to the magnetic flux motor with an intense magnetic flux in accordance with the present invention;

figure 7(a) and 7(b) diagram of the directions of magnetization of the motor with an intense magnetic flux in accordance with the present invention and the conventional motor photoanimator surface mount;

on Fig - schedule of changes in characteristics depending on the thickness of the bridges of the rotor of the electric motor with the concentrated magnetic flux in accordance with the present invention;

figure 9 is a graph of torque depending on the change speed of the motor with an intense magnetic flux in accordance with the present invention and the conventional motor with a permanent magnet with surface mounting.

The implementation of the invention

Next will be described a preferred embodiment of the motor with a permanent magnet in accordance with the present invention with reference to the accompanying drawings.

Figure 5 presents a view in plan of an electric motor with an intense magnetic flux in accordance with the present invention.

The motor with the concentrated magnetic flux in accordance with the present invention includes an annular stator 50 having multiple radially directed teeth 53, and the rotor 60, located in the center of the stator 50 with lots of magnets placed around the circumference so that their poles of the same polarity facing each other and rotate as a result of interaction with the winding 55 of the stator 50.

The stator 50 includes an external annular core 51, the set of teeth 53, is placed radially outward from the heart is nick 51 to the rotor 60, and coil 55 wound on the respective teeth 53 and connected to an external power source.

In the outer circumference of the core 51 for fastening the stator is formed by cut-outs 51A.

The rotor 60 includes an annular rotor core 61, the set of teeth 63, protruding radially from the core 61 in the direction of the stator 50, and many magnets 65 placed between the teeth 63.

The core 61 is rigidly attached to the rotary frame 66, which is fixed located in the center of the rotor 60 of the rotary shaft.

To prevent dispersion of the magnetic flux in the direction of the center of the rotor 60, and not in the direction of the stator 50, to prevent the reduction of torque due to the dispersion of the magnetic flux in the core 61 or in the connecting areas between the core 61 and the teeth 63 formed a barrier to flow.

On figa, 6B and 6C shows an enlarged image of several embodiments of the barriers to the magnetic flux motor with an intense magnetic flux in accordance with the present invention. One embodiment of such a barrier flow in accordance with figa includes holes 61A small diameter circular cross-section formed in the connecting areas between the core 61 and the teeth 63, barrier holes 63 a rectangular cross section, formed in the ends of the prongs 63, adjacent to the artecnica 61, and bridges 61b formed on both sides of the barrier holes 63A to connect core teeth 61 and 63.

Another embodiment of the barrier flow figv includes holes 61A small diameter circular cross-section formed in the connecting areas between the core 61 and the teeth 63.

Another embodiment of the barrier flow pigs includes holes 61A small diameter circular cross-section formed in the connecting areas between the core 61 and the teeth 63, and a small bridge holes 61 of rectangular cross section formed in the bridges 61b connecting adjacent teeth 63.

On figa, 6B and 6C guide pins are inserted into holes 61A of small diameter when creating through helical folding of the core 61 and the holes 63b are used for precise vertical placement using steel rods teeth 63 in the manufacture of the rotor by adding together the sheets in the stack.

Next will be described the operation of the motor with an intense magnetic flux in accordance with the present invention.

In conventional electric motors with permanent magnet (surface mount figa) magnets 25 are placed in the radial direction (A). In the motor with intense magnetic flux, shown in figv, magnets 65 are placed along the circumference (C) so that the x of the same polarity facing each other.

On Fig shows a graph of the characteristics of the torque pulsations depending on the thickness serdechnikov bridges 61b connecting the lower portions of the magnets 65. As shown in Fig, with increasing thickness of the bridge 61b from 0.5 mm to 3 mm torque is reduced by about 50%. Therefore, in order to minimize the dispersion of the magnetic flux of the magnets 65 (figa, 6B and 6C), the electric motor form holes 61A of small diameter, bridge openings 61 and/or barrier openings 63A and thereby gain the optimum design of the barrier flow.

Figure 9 shows the variation of torque depending on the change speed of the motor with an intense magnetic flux in accordance with the present invention and the conventional motor with a permanent magnet with surface mounting. From figure 9 it is seen that the electric motor with an intense magnetic flux in accordance with the present invention has more torque than a conventional motor with a permanent magnet with surface mounting the same configuration and volume. The graph shows that the torque of a conventional motor with a permanent magnet with surface mounting at the beginning of the rotation was 314 kg·cm and torque of the motor with an intense magnetic flux is accordance with the present invention was 346 kg· see, therefore, torque of the electric motor with an intense magnetic flux is increased.

Accordingly, when the operation with the same torque when using an electric motor in accordance with the present invention, the thickness of the motor and wound winding will be less and, therefore, decrease the overall production costs for its production. Further, since it is possible to reduce the motor due to the reduction of its thickness while maintaining the same torque, new opportunities of application of the electric motor with an intense magnetic flux in accordance with the present invention in the design of washing machines, as well as improve the performance of drum-type washing machine.

As follows from the above, the present invention is a motor with an intense magnetic flux containing a rotor with an intense magnetic flux, having a set of magnets placed around the circumference so that their like poles facing each other to prevent dispersion of the magnetic flux, resulting in higher torque in comparison with a conventional motor with a permanent magnet with the surface mounting of the same size, reduced production costs and the possibility of miniaturization.

Further, since the barrier flow is formed in the rotor core of the motor to maximize the prevention of dispersion of the magnetic flux, due to the increased torque, improved the General parameters of the motor with the concentrated magnetic flux in accordance with the present invention.

Preferred variants of the present invention have been described for illustrative purposes, and any expert will understand that any modifications, additions and substitutions, if they do not go beyond the scope of the invention set forth in the claims.

1. Motor with intense magnetic flux, characterized in that it includes an annular stator in which a winding is wound on a multitude of radially placed teeth and located in the center of the stator, the rotor, and the rotor comprises an annular rotor core, many speakers of an annular rotor core in the direction of the stator teeth and the lot located between the teeth of the magnets, while in the connecting area between the annular rotor core and tooth made a hole of small diameter, intended for introducing the guide pin and the bridge connecting adjacent teeth, or at the end of the prong adjacent the annular rotor core, formed a barrier clamining flux of the magnets to prevent its dissipation.

2. The electric motor according to claim 1, wherein the stator includes an annular core, many placed radially protruding beyond the inner circumference of the ring core teeth and windings wound on the respective teeth and connected to an external power source.

3. The electric motor according to claim 2, characterized in that on the outer circumference of the stator is formed by cut-outs for mounting an annular stator core.

4. The electric motor according to claim 1, characterized in that the barrier of the magnetic flux of the magnets barrier includes a rectangular opening made in a specified terminal area of the tooth adjacent to the annular rotor core.

5. The electric motor according to claim 1, characterized in that the barrier of the magnetic flux of the magnets includes bridge the rectangular opening made in the specified bridge.

6. The electric motor according to claim 1, characterized in that the annular rotor core formed guide holes to add to the stack of multiple sheets by steel bars.

7. The electric motor according to claim 1, characterized in that the annular rotor core is rigidly attached to the rotary frame, and a rotary shaft fixed in the center of the rotor.



 

Same patents:

FIELD: electric engineering, in particular, electric motors with constant magnets.

SUBSTANCE: electric motor with constant magnets includes stator with a winding wound on it and a rotor with magnets. Magnets of the rotor are made of different materials which have different energy values. Thickness of a strong magnet is less than thickness of weak magnets.

EFFECT: reduced growth of material costs of manufacture of magnets, improved torque and increased power of electric motor.

8 cl, 5 dwg

FIELD: electrical engineering; mechanical design of permanent-magnet excited synchronous machines.

SUBSTANCE: proposed compensated and permanent-magnet excited split-phase generator has two stators identically disposed on its longitudinal axis and two rotors disposed on generator center line; novelty is that stators have salient poles with stator windings placed about them; stator pole size along internal circumference of stators and size of rotor poles along rotor external surfaces is 90 electrical degrees, rotors being shifted relative to one another around axis of revolution by 90 electrical degrees; rotor poles are permanent magnets; stators and rotor backs are made of thin-sheet electric steel and covered with insulation.

EFFECT: simplified mechanical design of split-phase generators.

1 cl, 2 dwg

FIELD: automotive industry; steering systems of automobiles.

SUBSTANCE: invention is designed for reducing effort on steering wheel. Stator of electric motor is provided with magnetic circuit with n salient poles and rotor, with n-2 poles in form of permanent magnets. Three-phase winding of stator contains coils arranged in six equally alternating phase zones, one coil for pole, several coils belonging to one phase in each phase zone. Winding coils in phase zones belonging to one phase are connected In parallel aiding. Inlet and outlet shafts arranged in booster housing are interconnected by torsion bar being sensitive element of torque sensor and coupled with steering wheel and steering mechanism by other ends. Rotor of electric motor is installed on outlet shaft. Stator winding controllable supply, rotor position pickup and control unit are provided. Inputs of the latter are connected with outputs of torque sensor and rotor position pickup, and output is connected to control input of said supply source. Group if inventions makes it possible to improve manufacturability of electric motor and steering booster as a whole.

EFFECT: improved operating characteristics, safety and comfortability of steering.

5 cl, 3 dwg

FIELD: electric engineering and electric-mechanical engineering, in particular - constructions of rotors for high-speed electric machines.

SUBSTANCE: rotor of high-speed electric machine contains yoke 1 with permanent magnets 2 positioned thereupon, on which polar end pieces 3 are mounted. Yoke 1 is made in form of evenly alternating magnetic and non-magnetic circular plates 4,5. on external and internal surface of polar end pieces 3 concentrically to rotor axis internal and external circular grooves are made. Internal circular grooves are mounted on external rings 6, connected by links to non-magnetic plates 5. by selecting relation between number of external and internal circular grooves it is possible to provide for optimal thickness of measuring portion of yoke 1 and its radial size. Due to decreased loads of polar end pieces 3 and bandage 7, achieved by making circular and linear slit grooves 10 on external surface of polar end pieces, mechanical durability and operational reliability of device are increased.

EFFECT: improved reliability of presented rotor by increasing its mechanical durability and manufacturability.

5 cl, 4 dwg

Electric machine // 2241298
The invention relates to the field of electrical engineering, in particular to electrical machines and drives

The invention relates to the field of electrical engineering, namely for rotors of electric machines with permanent magnets, and can be used in synchronous motors and generators, as well as in the brushless motors used in electric drives for industrial robots, tape drive mechanisms, the cinematographic equipment and software devices

Brushless motor // 2231200
The invention relates to the field of electrical engineering and is about brushless motors

The invention relates to the field of electrical engineering and can be used in the drive, transport, energy

The invention relates to the field of electrical and related to features of electrical drives, the rotor contains permanent magnets and the stator is electrically excited

Rotor // 2336620

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering, particularly to electrical machines and covers the rotor design. The novelty of this invention consists in that rotor (10) is furnished with cross piece (11) fitted to revolve around its axis and comprising several ribs (12) and active-steel laminated stack (14) made up of separate plates (16) concentrically enveloping the aforesaid cross piece (11) and jointed to it by cleaving wedges (13). The joint between stack (14) and cross piece (11) is provided for by making wedges (13) and stack plates (16) so that both enter each other with a geometrical match. Note here that, in compliance with this invention, the aforesaid stack plates (16, 16', 16") are furnished with several slots (18), with one side of every one said slot (18) is limited by dovetail-shape bearing side surface (17a, b) and with the other side being constricted by a side surface arranged at a slant angle.

EFFECT: simpler design, ease of manufacture, higher reliability and lower costs.

5 cl, 6 dwg

Rotor // 2336620

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering, particularly to electrical machines and covers the rotor design. The novelty of this invention consists in that rotor (10) is furnished with cross piece (11) fitted to revolve around its axis and comprising several ribs (12) and active-steel laminated stack (14) made up of separate plates (16) concentrically enveloping the aforesaid cross piece (11) and jointed to it by cleaving wedges (13). The joint between stack (14) and cross piece (11) is provided for by making wedges (13) and stack plates (16) so that both enter each other with a geometrical match. Note here that, in compliance with this invention, the aforesaid stack plates (16, 16', 16") are furnished with several slots (18), with one side of every one said slot (18) is limited by dovetail-shape bearing side surface (17a, b) and with the other side being constricted by a side surface arranged at a slant angle.

EFFECT: simpler design, ease of manufacture, higher reliability and lower costs.

5 cl, 6 dwg

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering, particularly, to the motor designs that feature a large length-to-diameter ratios and can be used in developing of submerged motors intended for driving submerged pumping units in oil production. The invention novelty consists in that the submerged motor stator with the large length-to-diameter ratio and made up of a cylindrical casing accommodating a cylindrical stacked magnetic circuit with a winding arranged with a minimum backlash therein features the outer surface of the said magnetic circuit furnished with, at least, two lengthwise symmetric grooves made in the teeth radial axes of symmetry, the groves depth being selected subject to their minimum effect on magnetic flux in motor operation and being filled with a compound composition.

EFFECT: production of submerged synchronous motor stator with rigid magnetic circuit that feature large length-to-diameter ratio and minimum departure from rated sizes allowing reliable magnetic circuit attachment inside stator casing.

3 cl, 1 dwg

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering, particularly, to the motor designs that feature a large length-to-diameter ratios and can be used in developing of submerged motors intended for driving submerged pumping units in oil production. The invention novelty consists in that the submerged motor stator with the large length-to-diameter ratio and made up of a cylindrical casing accommodating a cylindrical stacked magnetic circuit with a winding arranged with a minimum backlash therein features the outer surface of the said magnetic circuit furnished with, at least, two lengthwise symmetric grooves made in the teeth radial axes of symmetry, the groves depth being selected subject to their minimum effect on magnetic flux in motor operation and being filled with a compound composition.

EFFECT: production of submerged synchronous motor stator with rigid magnetic circuit that feature large length-to-diameter ratio and minimum departure from rated sizes allowing reliable magnetic circuit attachment inside stator casing.

3 cl, 1 dwg

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering and aims at reducing differential dissipation factor σd of the electric machine symmetric divided loop with m'=3-section furnished with 2p=16·c poles in z=3(8·b+1)·c=51·c, 75·c, 99·c slots at b = 2, 3, 4 with the number of slots per a pole and phase q=z/3p=17/8, 25/8, 33/8. The invention novelty consists in the following. The three-phase double layer electric machine winding at 2p=16 c poles is made up of 3p·c coil groups with the numbers from 1"Г" to 24"Г"·c, i.e. 1) in z=51·c slots with q=17/8 and the group 32222222, the first group 1"Г"...8"Г" coils feature the pitch over the slots ys=3 with the number of turns (1-x)wc, wc, (1-x)wc in 1"Г", (1+x)wc, (1-x)wc in 2"Г", 3"Г", 4"Г", (1-x)wc, (1+x)wc in 6"Г", 7"Г", 8"Г" and y'si= 4, 2 c (1+x)wc, (1-x)wc turns in 5"Г" at x=0.43; 2) in z=75·c slots with q=25/8 and the group 43333333, i.e the coils of the first group 1"Г"...8"Г" feature the pitch over slots ys=5 with the number of turns (1-x)wc, wc, wc, (1-x)wc in 1"Г", wc, (1+x)wc, (1-x)wc in 2"Г", (1-x)wc, (1+x)wc, wc in 8"Г" and y si =7, 5, 3 c (1-x)wc, (1+x)wc, wc turns in 3"Г", 4"Г", 5"Г", 6"Г", 7"Г" at x=0.54; 3) in z=99·c slots with q=33/8 and the group 54444444: in the first group 1"Г"...8"Г", the coils feature the pitch over the slots ys=6 with (1-x)wc, wc, wc, wc, (1-x)wc turns in 1"Г", wc, (1+x)wc, wc, (1-x)wc in 2"Г", 3"Г", 4"Г", (1-x)wc, wc, (1+x)wc, wc in 6"Г", 7"Г", 8"Г", ysi=9, 7, 5, 3 with wc, (1+x)wc, wc, (1-x)wc 5"Г" at x=0.46. The aforesaid distributions of coils with unequal number of turns are repeated in every following group, where c=1, 2, 3...; 2wc is the number of lots turns filled completely with the winding.

EFFECT: reducing winding differential dissipation factor.

3 cl, 10 dwg

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering and can be used in designing the induction motors. The induction motor gap accommodates a system of auxiliary conductors simulating transverse current of the design in question and supplied from an external circuit. These conductors generate a lengthwise field similar to that of the rotor. To simulate the double-layer rotor transverse currents, a special "screen" is fitted in the aforesaid gap, the stator being not feed and the screen being made of a foil or other sheet metal. The said screen should be fed from external single-phase 50 Hz source. In the case of the solid rotor induction motor, the length of the aforesaid screen is equal to stator pack length. The screen transverse conducting bands overlap, along the rotor circumference, the dual pole pitch. Both halves of the screen laid no different rotor section sides are connected in series. All poles of every half are parallel and feature an equal width. The screen density increases from the central section to end faces like the density of the rotor transverse current and is calculated theoretically. The screen draws the current to induce a lengthwise magnetic field similar to rotor transverse current lengthwise field.

EFFECT: possibility of simulating induction motor rotor transverse current lengthwise field.

4 dwg

FIELD: electricity.

SUBSTANCE: electric machine, contains a rotor (2), stator (4) and a permanently magnetised element (3) which is fixed on the rotor (2) or the stator (4) and limits between the rotor (2) and stator (4) air-gap clearance (7), to which is turned the surface of a permanently magnetised element (3) has a cylindrical form because of which there is the air-gap clearance (7) has constant width, and turned from which is the surface of the permanently magnetised element (3) has a distinct cylindrical form, because of which the element is permanently magnetised (3) has a changing thickness on its periphery. Thus, according to this invention, the electric machine has a spring (6) which serves as an elastic support for the permanently magnetised element (3).

EFFECT: reduction of the braking moment; an improvement in the quality and strength of the rotor by exception of the occurrence of cracks and other damages of the structural elements of the rotor and the guarantee of elastic fastening of the mentioned permanently magnetised element with observance of the corresponding requirements.

10 cl, 6 dwg

FIELD: electricity.

SUBSTANCE: in the three-phase synchronous motor of increased efficiency energised from permanent magnets, which consists of a three-phase stator with salient poles with stator coils, wound around the poles of the stator, and a rotor with poles from permanent magnets, according to the given invention, between the poles of the rotor are placed nonmagnetic plugs, inside of which along the radial axles are placed plates from soft electric steel.

EFFECT: simplification in the construction of the three-phase electric motors with a simultaneous increase in the torque and an increase in efficiency of the engine.

3 dwg

FIELD: electricity.

SUBSTANCE: stator with components from pressed magnetic metal powder is proposed. It is intended for use in the electric machine. Each unit of the core of the stator contains a set of units of the core of the stator. Each unit of the core of the stator forms an arc-shaped section of the core of the stator. Each unit of the core of the stator contains an internal polar tip, from the directing winding, which supports the winding, and, at least, one rear component and two end components attached to the winding on the external radial edge of the unit of the stator.

EFFECT: increase in the power of the engine by increase in the space factor of winding.

21 cl, 4 dwg

FIELD: electricity.

SUBSTANCE: stator with components from pressed magnetic metal powder is proposed. It is intended for use in the electric machine. Each unit of the core of the stator contains a set of units of the core of the stator. Each unit of the core of the stator forms an arc-shaped section of the core of the stator. Each unit of the core of the stator contains an internal polar tip, from the directing winding, which supports the winding, and, at least, one rear component and two end components attached to the winding on the external radial edge of the unit of the stator.

EFFECT: increase in the power of the engine by increase in the space factor of winding.

21 cl, 4 dwg

FIELD: electrical engineering; mechanical design of commutatorless magnetoelectric machines.

SUBSTANCE: rotor magnetic system has more than two magnetically permeable steel laminations with pole horns formed by prismatic tangentially magnetized N-S permanent magnets placed inside laminated stack; inner and outer diameters of laminations are uninterrupted and rectangular prismatic magnets are installed inside them so that distance over outer arc between external planes of two adjacent magnets of unlike-polarity poles is shorter than that over internal arc between same planes; magnets do not contact one another and have at least one projection on inner diameter for coupling with rotor shaft.

EFFECT: enhanced manufacturability.

3 cl, 2 dwg

Up!