Non-contact reduction machine with axial excitation

FIELD: electricity.

SUBSTANCE: non-contact reduction machine with axial excitation includes stator with housing made from soft magnetic material with odd and even packs of stator, which are laminated and consist of insulated electrotechnical steel plates with high magnetic permeability, and the number of which is not less than two, non-magnetic shaft; stator packs contain salient poles uniformly distributed along cylindrical surface, on inner surface of which there are elementary teeth; stator packs in tangential direction are located so that axes of their salient poles located opposite each other in axial direction coincide; odd and even rotor packs the number of which is equal to number of stator packs are pressed on the appropriate odd and even magnetic conductors of rotor, which are put on non-magnetic bushing installed on non-magnetic shaft; rotor packs contain teeth uniformly distributed along cylindrical surface; even packs of rotor are offset relative to odd rotor packs in tangential direction through the half of tooth division of rotor pack; between rotor magnetic conductors there located are ring-shaped layers of constant magnets axially magnetised in one direction; number of ring-shaped layers of constant magnets is one less than number of rotor packs; on salient poles of stator packs there is coil m-phase armature winding each coil of which in axial direction envelopes the appropriate salient poles of even and odd stator packs of one pole of each pack; excitation winding of inductor is made in the form of ring-shaped coils with longitudinal axis coinciding with longitudinal axis of machine; number of ring-shaped coils of excitation winding of inductor is one less than the number of stator packs. At that, for serviceability of machine there shall be certain relations between the number of salient poles of armature, number of elementary teeth on salient pole of armature, number of salient poles of armature in phase, total number of armature teeth, number of teeth on each pack of rotor and number of phases of m-phase armature winding.

EFFECT: manufacture of high-technology constructions with possibility of using frame coils of armature winding of non-contact electric reduction machines with axial combined excitation and using electromagnetic reduction in wide ranges at providing high energy parameters and operating characteristics with possibility of smooth and deep control by means of output parameters.

9 cl, 5 dwg, 1 tbl

 

The invention relates to the field of electrical engineering, in particular to low-speed, high-torque electric motors, drives and generators, concerns the design of contactless electrical machines electromagnetic reduction, and can be used in automation systems, drives great and average power of the courts, trolleybuses, trams, underground, concrete mixers, lifting gears, conveyor belts, gears with high moments on the shaft and low frequencies of rotation, as direct drives without the use of mechanical gearboxes, as well as wind turbines, hydro generators, high-frequency electric generators, synchronous generators, frequency converters and as managed stepper engines.

Known synchronous geared motor (Patent RU, 2054220 C1, MPK H02K 37/00, H02K 19/06, authors: Shevchenko A.F.; Kaluga DL)containing a rotor with Zpteeth and the stator 4·p poles (p=1, 2, 3, ...), on the inner surface of which is made of elementary teeth ZSteeth on each pole, and Zr=4·p·(Zs+K)±p (where K=0, 1, 2, ... is an integer), in large grooves between the poles of the stacked coil phase windings one on each pole, the coils are located on the same poles with numbers, distinguishing the situations at 4, connected in series "the end" from "the beginning" and is formed by four branches, the "end" of the first branch formed 1, 5, ..., 1+4·(p-1) coils, connected with the beginning of the" third branch formed 3, 7, ..., 3+4·(p-1) coils, and the connection point of these branches is connected to the first output winding end of the second branch formed 2, 6, ..., 2+4·(p-1) coils connected with the beginning of the" fourth branch formed 4, 8, ..., 4+4·(p-1) coils and the connection point of these branches through sequentially switched capacitor also connected to the first output and the second output connected two diodes so that the anode of the first of them is connected to the first and fourth branches, and with the cathode of the second diode is a second and third branches. One drawback of the synchronous gear motor are low energy indicators. In addition, these technical devices often perform with small air gaps, which makes them difficult to manufacture in mass (mass) production.

Known contactless torque motor (Patent RU, 2285322 C1 IPC H02K 21/00, author Epifanov O.K.), containing soft magnetic annular slot stator with R distinct toothed poles and concentrated m-phase armature winding, made in the form of coils, covering the poles of the stator, and the rotor is made in the form of two coaxially located the ring gear soft magnetic magnetic rotor, deployed relative to each other by half of their subcatego division, between which is placed an annular layer of axially magnetized in one direction of permanent magnets, with toothed poles of the stator and the toothed magnetic rotor facing each other and separated by an air gap δ, and the teeth on the magnetic rotor and the stator poles are made with a uniform and equal to each other subcommi divisions TZthe rotor is equipped with a non-magnetic sleeve thickness, more than half the thickness of the bMa layer of permanent magnets, which are installed and mounted stationary relative to each other toothed magnetic rotor are equal to each other active axial length Lpand an annular layer of permanent magnets, the number m of phases m-phase armature winding is made a multiple of three, defined as m=2f±1, where f is 1, 2, 3, ..., and expressed toothed pole grooving on the stator are evenly spaced, their number is defined as P=2m·2Swhere s is 0, 1, 2, ..., and each toothed pole stator is symmetrical about its axis placed an odd number of teeth, ZCthe thickness of the bZCwhile the axis of teeth, adjacent teeth, the stator poles are displaced relative to each other by an amount proportional to the ratio ±TZto m, and the adjacent poles of the stator are separated by slicesize b Wnot less than ten times the size of the air gap, which is determined from the relation bW=TZ·[(1±1/m)-bZC/TZ], and the number of teeth ZRon each of the toothed magnetic rotor is made a multiple of 2nwhen n = 2, 3, 4, ..., defined as ZR=P·(ZC±1/m), the thickness of the teeth bzpeach of the toothed magnetic rotor is made equal to half his subcatego division TZand related to the thickness of gear teeth of the stator poles bZCthe ratio 2/3≤bZC/bZP≤1, and coil armature winding of one phase, separated from each other by the number of pole divisions of the stator is equal to the number m of phases, are connected in series according to active axial length LCthe annular groove of the stator with toothed poles determined by the relation LC=(2LP+bM), and an annular toothed magnetic rotor located relative to the annular groove of the stator axially symmetrically. The disadvantage of analog is the implementation of m phase m-phase armature winding only a multiple of three, the number of distinct toothed stator poles only even numbers of teeth on each of the toothed magnetic rotor only in multiples of 2nwhen n = 2, 3, 4, ..., the number of teeth on each pole of the stator, only odd, the thickness of the teeth bZPevery who about of the toothed magnetic rotor is only half of it subcatego division T Z. This reduces the possible design of this technical devices and the possibility of its use.

Famous adopted for the prototype contactless induction brushless electric machine with electromagnetic excitation (Patent RU, 2277284 C2, IPC H02K 19/10, H02K 29/00, authors: ALEXANDER Demyanenko; Zherdev, IA,; Kozachenko V.F.; Rusakov A.M.; Esterov VN), comprising a housing defined therein a laminated stack of electrical steel sheets packages stator, the number of which is divisible by two, with grooves in them for laying phase windings, the phase winding placed in the slots of the wound stator so that their coils in the slot parts of the winding parallel to the longitudinal axis of the machine and one coil covers all teeth wound stator located opposite each other, the excitation winding with a longitudinal axis parallel to the longitudinal axis of the machine, located on the stator between the wound stator, a metal non-magnetic shaft of magnetic metal on it, running gear packages rotor laminated plates of soft magnetic steel, the number of which equals the number of packets of the stator, two caps with bearings, the total number of phase windings of more than three and the number is a multiple of three, with each three-phase winding are independent zero point and between adjacent phases of different triads has a phase angle shift is, despite the fact that the ratio of the number of stator teeth Zarticlethe number of teeth of the rotor Zpexpressed as a fraction, in which the number of teeth of the rotor is a simple number, starting with five(5, 7, 11, 13, 17, ...), or is a product of Prime numbers by two, starting with six. The disadvantage of the prototype is the implementation of a number of packets of the stator only in multiples of two phase windings of more than three and only multiples of three, and the number of teeth of the rotor are the only Prime numbers, starting with five, or are a product of primes in two, starting with six. This reduces the possible design of this technical devices and the possibility of its use. In addition, the prototype is smaller compared to the claimed invention, the specific (related to the mass of active materials) torque on a shaft, lower efficiency and long ceteris paribus.

The aim of the present invention is to provide a construction contactless geared electric machine with axial excitation of the inductor made combined method, with high specific torque on the shaft with the possibility of using electromagnetic reduction of speed in a wide range in the mode of the electric motor, as well as in high power density with the possibility of applying electromagnetic re the products of EMF frequency in a wide range during operation of electrical generator, with high reliability and high performance execution annular field winding and armature winding with the use of the frame coils.

The present invention is the establishment of a connection between the number of poles wound stator, the number of phases is concentrated at the poles of the stator m-phase armature coil winding, the total number of teeth of each stator pack and the number of teeth of each rotor package, as well as the development of the algorithm for the construction of a wiring diagram m-phase coil winding of the armature and the annular excitation winding of the inductor is located between the wound stator, at the location between the magnetic rotor ring layers axially magnetized in one direction of permanent magnets contactless geared machine with axial excitation.

The technical result of the present invention to provide a high-tech designs contactless geared electric machines with axial excitation and application of an electromagnetic reduction in a wide range while maintaining high energy performance and operational characteristics with smooth and deep regulation output parameters.

In order to achieve the objectives and the technical result of the invention contactless reductora the machine with axial excitation includes a housing, made of soft magnetic steel with high magnetic permeability and which is the magnetic circuit of the stator, odd and even packets of stator and rotor, a laminated stack of isolated sheets of electrical steel with high magnetic permeability, and the number of packets of the at least two stator, the number of packets of the rotor is equal to the number of packets of the stator, wound stator and rotor facing each other and separated by an air gap, the active length extreme wound stator and rotor in the axial direction are the same, if you have a wound stator and, respectively, of the rotor more than two, the active length of the wound stator and the rotor in the axial direction between the extreme packages twice as the active length extreme packages stator contain uniformly distributed over the cylindrical surface expressed pole on the inner surface of which is made of elementary teeth, the number of salient poles of each stator pack equally, the number of elementary teeth on each expressed pole of the stator pack equally, the wound stator in the tangential direction are arranged so that the axes are against each other in axial direction of the salient poles of all odd and even packets of the stator are the same, the packets of the rotor contain evenly distribution is installed on the cylindrical surface of the teeth, the number on each package of the rotor equally, even the packets of the rotor offset from the odd packet of the rotor in the tangential direction at half subcatego division of rotor package, packages rotor pressed on the corresponding sleeve made of soft magnetic steel with high magnetic permeability and which is a magnetic rotor, which, in turn, mounted on non-magnetic sleeve, mounted on a nonmagnetic shaft, between the magnetic rotor ring layers are axially magnetized in one direction of the permanent magnets, creating unipolar constant magnetic field in the working air gap, the number of annular layers of permanent magnets to one less than the number of packets of the rotor, obviously expressed poles concentrated wound stator coil m-phase armature winding, each coil of which in the axial direction covers relevant (located against each other) expressed pole odd and even packets of one stator pole of each package, between the wound stator is the excitation winding of the inductor is made in the form of covering the annular rotor coil with a longitudinal axis coinciding with the longitudinal axis of the machine, the number of annular coils winding of the inductor to one less than the number of packets statory equal to the number of annular layers of permanent magnets, the excitation inductor is combined method: from the permanent magnets and the power excitation windings constant (straight) electric current, Zubovo-slot area of the anchor is made of the "comb" distributed, the width of the crowns of teeth, each package of the rotor is determined by the equality bZ2=k·tZ2width crowns elementary teeth located on the salient poles wound stator is determined by the equality bZ1=k·tZ1while tZ1and tZ2are subzone division salient poles wound stator and packages of the rotor, respectively, the coefficient k=0,38÷0.5 and its value is selected depending on the shape of the AC power source when the machine is in operation mode of the electric motor and the shape of the variable EMF of the armature when the machine is in operation mode of the electric generator.

The excitation winding of the inductor contactless geared machine with axial excitation can connect directly to an independent DC (rectified) voltage or to the output of the diode m-phase bridge, the input ends of which are connected to the output ends of the phases of the m-phase armature winding.

Contactless geared machine with axial excitation can work in the mode of unmanaged and managed a synchronous machine, in controlled stepper motor and controlled DC motor with independent and mixed excitation.

When using contactless geared machine with axial excitation as a synchronous electric motor powered armature winding can be performed:

- from a source of three-phase AC voltage,

- source single-phase AC voltage using a phase-shifting element,

from m-phase source of alternating voltage of constant frequency,

from m-phase source of alternating voltage adjustable frequency

from the constant voltage source through a controlled inverter that supplies a sinusoidal voltage on the phase winding of the armature, depending on the sensor of angular position of the rotor for maximum torque. When the excitation winding of the inductor can be connected directly to an independent DC (rectified) voltage or to the output of the diode m-phase bridge, the input ends of which are connected to the output ends of the phases of the m-phase armature winding.

When using contactless geared machine with axial excitation as a stepper motor powered armature winding is supplied from a power source that supplies the armature winding voltage pulses according to a predetermined algorithm in a specific point in time. At the same time to hold the rotor in the desired laid and can be applied to the mechanism of the phase of the electromagnetic arresting. In this case, the excitation winding of the inductor is connected directly to an independent DC (rectified) voltage.

When using contactless geared machine with axial excitation as a DC motor with separate excitation power winding of the armature is rectangular voltage pulses from the electronic switch according to a certain algorithm, depending on the sensor of angular position of the rotor for maximum torque. When the excitation winding of the inductor is connected directly to an independent DC (rectified) voltage.

When using contactless geared machine with axial excitation as a DC motor with mixed excitation power armature winding is rectangular voltage pulses from the electronic switch according to a certain algorithm, depending on the sensor of angular position of the rotor for maximum torque. When the excitation winding of the inductor is connected to the output diode m-phase bridge, the input ends of which are connected to the output ends of the phases of the m-phase armature winding.

Contactless geared machine with axial excitation can also R is to work as a synchronous m-phase generator of sinusoidal EMF and as a synchronous m-phase generator variable EMF rectangular or trapezoidal shape without a DC component.

In the present invention, reel m-phase armature winding and the field winding of the inductor are arranged on the stator, and a ferromagnetic toothed rotor is constructed with permanent magnets and winding. The possible execution of contactless geared machine with axial excitation with an external stator and an internal rotor with an internal stator and an external rotor. The present invention expressed pole of each stator pack are the salient poles of the armature, and the active portion of the inductor is located on the stator and on the rotor.

The invention is illustrated by drawings.

Figure 1÷4 - examples of implementation of the invention in the form of transverse sections of the odd and even packets of the stator and odd and even packets of active rotor (excitation winding of the inductor flows constant (straight) electric current), the circuit of the coils m-phase armature windings and vector diagrams of currents flowing through the windings of the armature,

5 is a General view of the contactless geared machine with axial excitation with an external stator and an internal rotor with three packages of the stator and three packages of the rotor.

In accordance with the present invention between the number of salient poles of each stator pack Z1Pthe number of phases m-phase armature coil winding m=3, 4, 5, 6, ..., the total number of teeth, each is about the stator pack Z 1and the number of teeth of each rotor package Z2contactless geared machine with axial excitation limits the communication necessary for the function of the machine and get the best energy performance at maximum specific torque on a shaft, which is expressed by the equalities(1), (2), (3):

where Z1m=1, 2, 3, 4, ... - the number of salient poles of each stator pack in phase, Z1S=1, 2, 3, 4, ... - the number of elementary teeth on the expressed pole stator, K=0, 1, 2, 3, ... - nonnegative integer tZ1=360°/(Z1P·(Z1S+K)) and tZ2=360°/Z2defined in the angular dimension.

Coil m-phase armature winding in phase are connected opposite in magnetic relation. The beginning phase winding may belong to any coil in phase. The location of the phase coils on the poles of the armature along the bore of the stator is carried out in accordance with the alternation of the phase currents on the vector diagram. Phase armature winding can be connected in a star" or "polygon".

Axially magnetized in one direction of the permanent magnets in the ring layers located between packets of the rotor, create a constant magnetic flux, unipolar mud through the magni is Provody and packages of the rotor and stator and a working air gap between them. Thus, the teeth of the odd packet of the rotor are magnetized in the radial direction as the magnetic pole of one polarity, such as the South pole "S", and the teeth are even packages of the rotor are magnetized in the radial direction as the magnetic poles of the other polarity, such as the North pole "N".

The annular coil winding of the inductor when there are more than two can be connected serially or in parallel. The output ends of the winding of inductor must always be connected to the DC (rectified) voltage so that created during the flow through them is constant (straight) electric current constant magnetic flux, a single unipolar through the magnetic circuits and packages of the rotor and stator and the air gap between them, was collinear with the permanent magnetic flux of the excitation coil, created the annular layers of permanent magnets.

Figure 1÷4 presents examples of implementation of the invention in accordance with the formula(1), (2), (3). Figure 2 also shows the connection of the field winding of the inductor through a 5-phase diode bridge to the output end of the phase 5-phase armature winding. According to the figures of drawings of transverse sections of the wound stator and packages rotor and shapes of wiring diagrams coil m-phase windings is core is illustrated in the table. The position of the packages of the rotor relative to the wound stator on the figure in the motor mode, the position vectors of the currents on the vector diagram and directions of currents flowing through the coils of the armature winding, the corresponding figure is a wiring diagram of the coils m-phase armature winding contactless geared machine with axial excitation is shown at the same time.

According to the figures of drawings of transverse sections of the wound stator and packages rotor and shapes of wiring diagrams coil m-phase windings of the armature
FiguremZ1mZ1PZ1SKZ1Z2
drawing of the cross-sectionwiring diagrams coil winding
1253152130 48
346212313650

Consider the design of contactless geared machine with axial excitation with an external stator and an internal rotor with three packages of the stator and three packages of the rotor (figure 1, figure 3, figure 5). Paramagnetically high frequency odd 1, even 2 packs stator made of laminated insulated electrical steel sheets with high magnetic permeability and fixed in the magnetic core 4 of a stator made of magnetic steel with high magnetic permeability and which is the case. The package 1 and package 2 stator contain uniformly distributed over the cylindrical surface expressed pole 13, on the inner surface of which is made of elementary teeth 14. The number of salient poles 13 on each stator pack equally, the number of elementary teeth 14 on each expressed pole 13 wound stator equally. The package 1 and package 2 of the stator in the tangential direction are arranged so that their axes are against each other in axial direction of the salient poles 13 is opadaut. On the explicit poles 13 wound stator posted by reel m-phase winding 12 anchors, each coil of which in the axial direction includes the relevant pronounced pole odd 1, even 2 packs of one stator pole of each package. Coil m-phase winding 12 anchors are made of coiled copper wire or copper winding bus and can be framed. The rotor by means of bearings 11, the shaft 5 and the end shields 3 are positioned relative to the stator. The shaft 5 is made of non-magnetic, for example stainless steel or titanium. On the shaft 5 are non-magnetic sleeve 6, which may be made of alloys of aluminum, stainless steel or titanium. The sleeve 6 mounted odd 7 and even 8, the magnetic rotor is made of soft magnetic steel with high magnetic permeability, which pressed the corresponding odd-numbered 9 and even 10 packages of the rotor. Odd 7 and even 8 cores with odd 9 and even 10 packages rotor positioned relative to the odd 1, even 2 packs of the stator, respectively. Packages 9 and 10 of the rotor is made of laminated insulated electrical steel sheets with high magnetic permeability and contain uniformly distributed over the cylindrical surface of the teeth 15 in number on each package of the same rotor is O. Even a 10 pack of the rotor is offset odd 9 packages of the rotor in the tangential direction at half subcatego dividing the package of the rotor. To reduce the cost of design packages 9 and 10 of the rotor can be made with metal from solid blocks of steel with high magnetic permeability as one with the cores 7 and 8 of the rotor, respectively. When performing machines small diameter non-magnetic sleeve 6 can not be installed. Between the magnetic rotor ring layers are axially magnetized in one direction of permanent magnets. When performing machines with medium and large diameters of the annular layers axially magnetized in one direction of the permanent magnets can be made of segmental permanent magnets, and when the machines with small diameters - from a solid cylindrical. Permanent magnets in the layers are arranged so that odd cores they fit their poles of one polarity, for example, "S", and to the even cores - other polarity, such as "N" (figure 5). Between the odd-numbered packages 1 and even package 2 of the stator is the excitation winding of the inductor is made in the form of covering the annular rotor coils 16 and 17 with a longitudinal axis coinciding with the longitudinal axis of the machine. The annular coil 16 and 17 may be you who Olney of winding copper wire or copper winding bus and are connected in series or in parallel. The ends of the winding of the inductor are connected with the DC (rectified) voltage.

Contactless geared machine with axial excitation works in motor and generator modes.

Consider motor mode (figure 1, figure 3, figure 5). The excitation winding of the inductor serves DC (rectified) voltage across the excitation winding proceeds DC (rectified) electric current, creating a constant magnetic field of the inductor with a constant MDS inductor and a constant magnetic flux inductor, coinciding in direction with the permanent magnetic flux created by the permanent magnets. Total permanent magnetic flux inductor unipolar closed through the annular layers axially magnetized in one direction of permanent magnets, odd 7 and even 8 magnetic rotor odd 9 and even 10 packages of the rotor, the air gap between the rotor and stator, odd 1, even 2 packs of the stator and the magnetic core 4 of the stator. Under the action of the total permanent magnetic flux of the inductor teeth 15 odd 9 packages of the rotor are magnetized to form pole of one magnetic polarity, for example the South pole "S", and the teeth 15 of even-numbered package 10 of the rotor are magnetized to form the pole of the other magnetic polarity, for example the North pole "N". N. the phase m-phase winding 12 of the armature serves alternating voltage, m-phase winding 12 of the armature flows alternating electric current creates an alternating rotating magnetic field of the armature. This forms a variable time MDS anchors and time-varying magnetic flux of the armature. Figure 2 and figure 4 shows vector diagrams of electric currents flowing through the respective m-phase windings 12 anchors, wiring diagrams which are presented on these figures. The vectors of currents in time rotate the coordinate axes xy counterclockwise. Consider the point in time when the currents are projected on the y-axis. In accordance with these projections in figure 2 and figure 4 the directions of currents in the coils m-phase windings of the armature. This elementary teeth 14 that are located on the respective salient poles 13 of the wound stator in which coils are m-phase winding 12 anchors, form a South magnetic pole S and a North magnetic pole "N". Due to the interaction of the alternating magnetic field of the armature with a permanent magnetic field of the inductor to the rotor of the applied unidirectional during the entire operating time of the electric motor torque. According to the invention for one period, changes in the magnetic field of the armature, the rotor moves one subzone division package of the rotor. Hence, when changing the power m-phase voltages,submitted to m-phase armature winding with frequency f (Hz), the rotor rotates at synchronous frequency n=60·f/Z2(rpm). This is a high electromagnetic reduction of frequency of rotation of the rotor, the direction of which in the figures is shown by an arrow with the letter "n". It is easy to see that in this construction the rotor rotates according to the rotation direction of the magnetic field of the armature.

Consider the generating mode (figure 1, figure 3, figure 5). During rotation of the rotor by a third-party source-torque rotational speed n of the total permanent magnetic flux inductor, created by the permanent magnets and the current flowing through the annular excitation winding of the inductor is constant (straight) electric current across the air gap and expressed pole 13 packages of the stator from the rotor, stator, creates a distinct poles 13 wound stator of an alternating magnetic flux, leading to the coils of the m-phase winding 12 of the anchor variable EMF. If the external circuit load circuit is closed, m-phase winding 12 of the armature flows alternating electric current, the electric power is given to the consumer.

It should be noted that changing the value of DC (rectified) electric current of the excitation winding of the inductor can be continuously influence on the output parameters contactless geared machine with axial excitation.

1. Ascontact the th geared machine with axial excitation, containing the stator housing of magnetic material with fixed therein a laminated stack of isolated sheets of electrical steel with high magnetic permeability packages stator coil m-phase armature winding, the field winding of the inductor located between the wound stator, a non-magnetic shaft, a laminated stack of isolated sheets of electrical steel with high magnetic permeability packages rotor equal in number to the number of packets of the stator, characterized in that the wound stator and the rotor is divided into even and odd, the number of packets of the at least two stator, the active length extreme wound stator and rotor in the axial direction are the same, the wound stator contain uniformly distributed over the cylindrical surface expressed pole on the inner surface of which is made of elementary teeth, the number of salient poles of each stator pack equally, the number of elementary teeth on each expressed pole of the stator pack equally, the wound stator in the tangential direction are arranged so that their axes are opposite each other in axial direction of the salient poles are the same, odd and even packets of the rotor pressed on the corresponding odd-numbered and even-numbered magnetic rotor that forest today who are on the non-magnetic sleeve, mounted on a nonmagnetic shaft, packages rotor contain uniformly distributed over the cylindrical surface of the teeth, which number on each package of the rotor equally, even the packets of the rotor offset from the odd packet of the rotor in the tangential direction at half subcatego dividing the package of the rotor, between the magnetic rotor ring layers are axially magnetized in one direction of permanent magnets, the number of annular layers of permanent magnets to one less than the number of packets of the rotor, salient poles wound stator concentrated reel m-phase armature winding, each coil of which is in axial direction includes corresponding distinct poles of odd and even packets of one stator pole each package and the number of phases reel m-phase armature winding m=3, 4, 5, 6 ..., the excitation winding of the inductor is made in the form of a ring-shaped coil with a longitudinal axis coinciding with the longitudinal axis of the machine, the number of annular coils winding of the inductor to one less than the number of packets stator, Zubovo-slot area of the anchor is made of the "comb" distributed, the width of the crowns of teeth, each package of the rotor is determined by the equality bZ2=k·tZ2width crowns elementary teeth located on the salient poles p is the ket stator, is determined by the equality bZ1=k·tZ1while tZ1and tZ2are subzone division salient poles wound stator and packages of the rotor, respectively, between the number of salient poles of each stator pack Z1Pthe number of phases m-phase armature coil winding m, the total number of teeth of each stator pack Z1and the number of teeth of each rotor package Z2establishes limits on the communication necessary for the function of the machine and get the best energy performance at maximum specific torque on a shaft, which is expressed by the equalities(1), (2), (3):



where Z1m=1, 2, 3, 4, ... - the number of salient poles of each stator pack in phase, Z1S=1, 2, 3, 4, ... - the number of elementary teeth on the expressed pole stator, K=0, 1, 2, 3, ... - nonnegative integer tZ1=360°/(Z1P·(Z1S+K)) and tZ2=360°/Z2defined in the angular dimension, reel m-phase armature winding in phase are connected opposite in magnetic relation.

2. Contactless geared machine with axial excitation according to claim 1, characterized in that the stator is located outside the rotor inside.

3. Contactless geared machine with axial excitation according to claim 1, distinguished by the lasting themes that the rotor is located outside the stator is inside.

4. Contactless geared machine with axial excitation according to claim 1, characterized in that the phases of armature windings are connected in star.

5. Contactless geared machine with axial excitation according to claim 1, characterized in that the phase of the armature winding are connected in a polygon.

6. Contactless geared machine with axial excitation according to claim 1, characterized in that the coil winding of the inductor are connected in series.

7. Contactless geared machine with axial excitation according to claim 1, characterized in that the coil winding of the inductor are connected in parallel.

8. Contactless geared machine with axial excitation according to claim 1, characterized in that the power winding of the inductor is independent from DC (rectified) voltage.

9. Contactless geared machine with axial excitation according to claim 1, characterized in that the power winding of the inductor is supplied from the output ends of the phases of the m-phase armature winding via a diode m-phase bridge.



 

Same patents:

FIELD: electricity.

SUBSTANCE: electrical machine of double rotation includes stator, rotors installed so that they can rotate, the first blades that are connected to the first rotor and are rotated with the first rotor in the first direction, the second blades that are connected to the second rotor and are rotated with the second rotor in the second direction, shafts of rotors, and bearings that allow rotation of shafts, load-carrying housing; the first blades and the second blades are arranged outside the housing; stator is made in the form of individual teeth with winding without yoke, and rotors are made in the form of concentric sleeves from material with high magnetic permeability, which are located on outer and inner side of stator; on sleeves there fixed are radially magnetised constant magnets; polarity of neighbouring constant magnets alternates; on each tooth there located is concentric winding insulated from housing; number of poles of the first rotor is equal to the number of periods of the first fundamental harmonic of magnetomotive force of stator winding; number of poles of the second rotor is equal to the number of periods of the second fundamental harmonic of magnetomotive force of stator winding; rotors are not attached to each other and directions of their rotation are opposite.

EFFECT: improving reliability of electric machine of double rotation at simultaneous exclusion of transmission to its stator of reactive moment and providing the possibility of using air flows with low linear speeds for operation of this machine in generator mode.

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FIELD: electricity.

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EFFECT: providing reliable clamping and fixation of constant magnets on surface of rotor of electrical machine at simultaneous provision of the device for its cooling.

20 cl, 12 dwg

FIELD: electricity.

SUBSTANCE: invention may be used in wide range of machine shaft rotation frequencies (from several rpm to several tens of thousands rpm) in automatics systems, in autonomous electric equipment systems, in military, space engineering, household equipment, on aviation and motor transport, as traction controlled and uncontrolled electric drives, submersible oil pumps, wind-powered generators, hydraulic generators, multi-phase synchronous electric motors, multiphase high-frequency synchronous electric AC generators and multi-phase generators of frequency converters (including three-phase systems), and also, in rectification of output AC voltage and current of generators with the help of semiconductor rectifying devices and with the possibility to use smoothening filters to reduce pulsations of output parameters, as sources of supply with direct (rectified) current, exciters of synchronous generators of mobile mini-power plants, subexciters of main exciters of synchronous generators at stationary power plants. A stator of the contactless magnetoelectric machine with axial excitation comprises a charged core of an anchor with salient poles pressed in a soft magnetic body, being a magnetic conductor of an inductor, a coil multi-phase winding of the anchor, coils of which are arranged on appropriate salient poles of the anchor, one at each pole. The winding-free rotor of the machine comprises a shaft with a non-magnetic bushing placed on it, thickness of which in radial direction is considerably higher than the value of the working air gap, on which there are odd and even inductor cores with pole ledges arranged in a coaxial manner. Number of inductor cores is at least two, even cores of the inductor are displaced relative to odd cores of the inductor in tangential direction by half of pole division of the inductor core. Between cores of the inductor there are circular layers of segment permanent magnets axially magnetized in one direction and arranged in layers so that a unipolar permanent magnetic flow of the inductor is developed. Number of circular layers of segment permanent magnets is by one less than the number of inductor cores. At the same time certain ratios are met between the number of salient anchor poles, number of phases of the multi-phase coil winding of the anchor, number of salient poles of the anchor in the phase and number of pole ledges of each core in the inductor.

EFFECT: production of highly reliable, manufacturable and highly repairable design of the multiphase contactless magnetoelectric machine with axial excitation with high power parameters and operational characteristics at wide range of shaft rotation frequencies and with various ratio of active length and diameter of the machine stator bore.

18 cl, 4 dwg

Borehole generator // 2426875

FIELD: electricity.

SUBSTANCE: generator includes protective housing, electric connector, at least one attachment assembly, rotor with hydraulic turbine, constant magnets and excitation windings. At that, rotor includes several discs with through radial slots in which constant magnets are installed. Poles of constant magnets are directed parallel to generator axis and alternate. Excitation windings are installed on both sides of each disc. Generator cavity is filled with lubricating fluid. On upper edge of rotor there is filling opening of lubricating fluid to the cavity of generator. Generator includes at least one pressure and temperature expansion compensator interconnected with generator cavity.

EFFECT: simplifying the design, improving reliability and power of generator at decrease of axial dimensions and weight of electric generator.

5 dwg

Borehole generator // 2426874

FIELD: electricity.

SUBSTANCE: borehole generator is equipped with protective housing, electric connector, at least one attachment fitting, rotor with hydraulic turbine, constant magnets, rotor of generator and excitation windings which are fixed inside protective housing. Magnetic coupling containing drive and driven half-couplings and magnetic permeable partition between them is installed between rotors. Discs having radial slots in which constant magnets are installed are fixed on generator rotor. Excitation windings are installed on both sides of discs. Tight magnetic permeable partition containing parts from magnetic permeable material is arranged between driven and drive half-couplings. At that, drive half-coupling is connected to rotor, and driven coupling is connected to generator rotor. Inner cavity of drive half-coupling is filled with lubricating fluid. On upper edge of rotor there is filling opening of lubricating fluid to the cavity of drive half-coupling. Generator includes at least one pressure and temperature expansion compensator interconnected with cavity of drive half-coupling.

EFFECT: simplifying the design, improving reliability and power of generator at decrease of diametrical dimensions and weight of electric generator.

3 dwg

FIELD: electricity.

SUBSTANCE: invention refers to low-speed high-torque electric motors, electric drives and generators, to the design of non-contact electric machines with electromagnetic reduction with combined excitation of inductor and can be used in automation systems as motorised wheels, motorised drums, starter-generators, electric steering wheel boosters, direct drives in domestic equipment, electric drives of high and average power of ships, trolleybuses, trams of the underground, concrete mixers, lifting mechanisms, belt conveyors, liquid transfer pumps, mechanisms with high torques on the shaft and low frequencies of its rotation, as direct drives without using any mechanical reduction gears, as well as wind-driven generators, hydraulic generators, high-frequency electric generators, synchronous generators of frequency converters and as controlled stepped motors. Non-contact reduction machine with salient-pole armature includes stator with housing made from soft magnetic material with odd and even packs of stator, which are laminated and consist of insulated electrotechnical steel plates with high magnetic permeability, and the number of which is not less than two, non-magnetic shaft, stator packs contain salient poles uniformly distributed along cylindrical surface, on inner surface of which there are elementary teeth, stator packs in tangential direction are located so that axes of their salient poles located opposite each other in axial direction coincide; odd and even rotor packs the number of which is equal to number stator packs are pressed on the appropriate odd and even magnetic conductors of rotor, which are put on non-magnetic bushing installed on non-magnetic shaft, rotor packs contain teeth uniformly distributed along cylindrical surface, even packs of rotor are offset relative to odd rotor packs in tangential direction through the half of tooth division of rotor pack; between rotor magnetic conductors there located are ring-shaped layers of constant magnets axially magnetised in one direction, number of ring-shaped layers of constant magnets is one less than number of rotor packs; on salient poles of stator packs there is coil m-phase armature winding each coil of which in axial direction envelopes the appropriate salient poles of even and odd stator packs of one pole of each pack; excitation winding of inductor is made in the form of ring-shaped coils with longitudinal axis coinciding with longitudinal axis of machine; number of ring-shaped coils of excitation winding of inductor is one less than the number of stator packs. At that, for serviceability of machine there shall be certain relations between the number of salient poles of armature, number of elementary teeth on salient pole of armature, number of salient poles of armature in phase, total number of armature teeth, number of teeth on each pack of rotor and number of phases of m-phase armature winding.

EFFECT: manufacture of high-technology constructions of non-contact electric reduction machines with salient-pole armatures with combined excitation and application of electromagnetic reduction in wide ranges at providing high energy parametres and operating characteristics with possibility of smooth and deep control by means of output parametres.

9 cl, 5 dwg, 1 tbl

FIELD: electricity.

SUBSTANCE: invention refers to low-speed high-torque electric motors, electric drives and generators, to the design of non-contact magnetic electric machines with electromagnetic reduction and can be used in automation systems, in domestic equipment, as motorised wheels, motorised drums, starter-generators, electric steering wheel boosters, lifting mechanisms, electric drives of concrete mixers, belt conveyors, liquid transfer pumps, mechanisms with high torques on the shaft and low frequencies of the shaft rotation, as direct drives without using any mechanical reduction gears, as well as wind-driven generators, hydraulic generators, high-frequency electric generators, synchronous frequency converters, and as controlled stepped motors. Non-contact magnetic electric reduction machine with salient-pole armature includes stator the armature core of which consists of insulated electrotechnical steel plates with high magnetic permeability, and has salient poles on inner surface of which there are elementary teeth, coil m-phase armature winding, each coil of which is arranged on the appropriate salient pole of armature, and ferromagnetic rotor without winding, which contains inductor with odd and even toothed cores with equal number of teeth on each core, odd and even toothed cores of inductor are made in the form of packs consisting of insulated electrotechnical steel plates with high magnetic permeability, number of inductor cores is not less than two, even inductor cores are offset relative to odd ones in tangential direction through the half of its toothed division; between magnetic conductors of inductor there located are ring-shaped layers of segmental constant magnets axially magnetised in one direction. At that, for serviceability of non-contact magnetic electric reduction machine with salient-pole armature there shall be certain relations between the number of salient poles of armature, number of elementary teeth on salient pole of armature, number of salient poles of armature in phase, total number of armature teeth, number of teeth on each inductor core and number of phases of m-phase armature winding.

EFFECT: manufacture of high-technology constructions of non-contact magnetic electric reduction machines with salient-pole armatures with deep electromagnetic reduction and enlarged capabilities of their application at maintaining high energy parametres and operating characteristics.

5 cl, 5 dwg

FIELD: electricity.

SUBSTANCE: invention can be used in automation systems as traction controlled and non-controlled electric drives, as wind generators, hydraulic generators, high-frequency electric generators, multi-phase synchronous electric motors and electric generators of frequency converters, as well as multi-phase power sources of electric current. The proposed non-contact modular synchronous magnetoelectric machine consists of modules - "elementary machines", and includes stator the armature core of which is charged and has salient poles with coil m-phase armature winding, each coil of which is arranged on the appropriate salient pole of armature, one per a pole, as well as rotor which contains inductor with salient poles with alternating polarity, which are symmetrically distributed along cylindrical surface and excited with constant magnets. At that, there are certain ratios between the number of salient armature poles, number of phases of m-phase armature winding, number of salient poles in armature module phase, number of modules and number of salient poles of inductor.

EFFECT: high energy data, high specific torque moment on the shaft in electric motor mode and high specific power in electric generator mode of non-contact modular synchronous magnetoelectric machine owing to better use of useful capacity of the machine.

7 cl, 5 dwg

FIELD: electricity.

SUBSTANCE: invention can be used in automation systems as traction controlled and non-controlled electric drives, as wind generators, hydraulic generators, high-frequency electric generators, multi-phase synchronous electric motors and electric generators of frequency converters, as well as multi-phase power sources of electric current. The proposed non-contact modular magnetoelectric machine consists of modules of "elementary machines" and includes stator the armature core of which consists of isolated electrotechnical steel sheets with high magnetic permeability and has salient poles with coil w-phase armature winding, each coil of which is arranged on the appropriate salient pole of armature, one per a pole, as well as rotor which contains inductor with salient poles with alternating polarity, which are symmetrically distributed along cylindrical surface and excited with constant magnets. At that, there are certain ratios between the number of salient armature poles, number of phases of m-phase armature winding, number of salient poles in armature module phase, number of modules and number of salient poles of inductor.

EFFECT: high energy data, high specific torque moment on the shaft in electric motor mode and high specific power in electric generator mode of non-contact magnetoelectric machine owing to better use of the useful capacity of the machine.

7 cl, 5 dwg

FIELD: electricity.

SUBSTANCE: invention can be used in automation systems as traction controlled and non-controlled electric drives, as wind generators, hydraulic generators, high-frequency electric generators, multi-phase synchronous electric motors and electric generators of frequency converters, as well as multi-phase power sources of electric current. The proposed non-contact magnetoelectric machine with modulated magnetomotive force of armature includes stator the armature core of which consists of isolated electrotechnical steel sheets with high magnetic permeability and has salient poles with coil w-phase armature winding, each coil of which is arranged on the appropriate salient pole of armature, one per a pole, as well as rotor which contains inductor with salient poles with alternating polarity, which are symmetrically distributed along cylindrical surface and excited with constant magnets. At that, there are certain ratios between the number of salient armature poles, number of phases of w-phase armature winding, number of salient poles of armature in phase and number of salient poles of inductor.

EFFECT: high energy data, high specific torque moment on the shaft in electric motor mode and high specific power in electric generator mode at reduction of torque moment pulsations, vibration and noise of non-contact magnetoelectric machine owing to its multi-phase design with modulated magnetomotive force of armature.

14 cl, 5 dwg

FIELD: electricity.

SUBSTANCE: invention refers to low-speed high-torque electric motors, electric drives and generators, to the design of non-contact electric machines with electromagnetic reduction with combined excitation of inductor and can be used in automation systems as motorised wheels, motorised drums, starter-generators, electric steering wheel boosters, direct drives in domestic equipment, electric drives of high and average power of ships, trolleybuses, trams of the underground, concrete mixers, lifting mechanisms, belt conveyors, liquid transfer pumps, mechanisms with high torques on the shaft and low frequencies of its rotation, as direct drives without using any mechanical reduction gears, as well as wind-driven generators, hydraulic generators, high-frequency electric generators, synchronous generators of frequency converters and as controlled stepped motors. Non-contact reduction machine with salient-pole armature includes stator with housing made from soft magnetic material with odd and even packs of stator, which are laminated and consist of insulated electrotechnical steel plates with high magnetic permeability, and the number of which is not less than two, non-magnetic shaft, stator packs contain salient poles uniformly distributed along cylindrical surface, on inner surface of which there are elementary teeth, stator packs in tangential direction are located so that axes of their salient poles located opposite each other in axial direction coincide; odd and even rotor packs the number of which is equal to number stator packs are pressed on the appropriate odd and even magnetic conductors of rotor, which are put on non-magnetic bushing installed on non-magnetic shaft, rotor packs contain teeth uniformly distributed along cylindrical surface, even packs of rotor are offset relative to odd rotor packs in tangential direction through the half of tooth division of rotor pack; between rotor magnetic conductors there located are ring-shaped layers of constant magnets axially magnetised in one direction, number of ring-shaped layers of constant magnets is one less than number of rotor packs; on salient poles of stator packs there is coil m-phase armature winding each coil of which in axial direction envelopes the appropriate salient poles of even and odd stator packs of one pole of each pack; excitation winding of inductor is made in the form of ring-shaped coils with longitudinal axis coinciding with longitudinal axis of machine; number of ring-shaped coils of excitation winding of inductor is one less than the number of stator packs. At that, for serviceability of machine there shall be certain relations between the number of salient poles of armature, number of elementary teeth on salient pole of armature, number of salient poles of armature in phase, total number of armature teeth, number of teeth on each pack of rotor and number of phases of m-phase armature winding.

EFFECT: manufacture of high-technology constructions of non-contact electric reduction machines with salient-pole armatures with combined excitation and application of electromagnetic reduction in wide ranges at providing high energy parametres and operating characteristics with possibility of smooth and deep control by means of output parametres.

9 cl, 5 dwg, 1 tbl

FIELD: electricity.

SUBSTANCE: invention refers to low-speed high-torque electric motors, electric drives and generators, to the design of non-contact magnetic electric machines with electromagnetic reduction and can be used in automation systems, in domestic equipment, as motorised wheels, motorised drums, starter-generators, electric steering wheel boosters, lifting mechanisms, electric drives of concrete mixers, belt conveyors, liquid transfer pumps, mechanisms with high torques on the shaft and low frequencies of the shaft rotation, as direct drives without using any mechanical reduction gears, as well as wind-driven generators, hydraulic generators, high-frequency electric generators, synchronous frequency converters, and as controlled stepped motors. Non-contact magnetic electric reduction machine with salient-pole armature includes stator the armature core of which consists of insulated electrotechnical steel plates with high magnetic permeability, and has salient poles on inner surface of which there are elementary teeth, coil m-phase armature winding, each coil of which is arranged on the appropriate salient pole of armature, and ferromagnetic rotor without winding, which contains inductor with odd and even toothed cores with equal number of teeth on each core, odd and even toothed cores of inductor are made in the form of packs consisting of insulated electrotechnical steel plates with high magnetic permeability, number of inductor cores is not less than two, even inductor cores are offset relative to odd ones in tangential direction through the half of its toothed division; between magnetic conductors of inductor there located are ring-shaped layers of segmental constant magnets axially magnetised in one direction. At that, for serviceability of non-contact magnetic electric reduction machine with salient-pole armature there shall be certain relations between the number of salient poles of armature, number of elementary teeth on salient pole of armature, number of salient poles of armature in phase, total number of armature teeth, number of teeth on each inductor core and number of phases of m-phase armature winding.

EFFECT: manufacture of high-technology constructions of non-contact magnetic electric reduction machines with salient-pole armatures with deep electromagnetic reduction and enlarged capabilities of their application at maintaining high energy parametres and operating characteristics.

5 cl, 5 dwg

FIELD: electricity.

SUBSTANCE: invention relates to the field of electric engineering and may be used in three-phase machines with excitation from permanent magnets. Proposed three-phase synchronous motor consists of three-phase stator, winding of which create rotary magnetic field, and rotor, which comprises bushing of non-ferromagnetic material, strip of excitation from ferromagnetic plates with layers of plates of permanent magnets and additional poles of ferromagnetic material with layers of non-ferromagnetic material installed along radial axes of additional poles.

EFFECT: provides for maximum efficiency of motor determined by ratio between useful mechanical capacity developed by motor (Pmech use) and electric power consumed by motor (Pel cons).

5 dwg

FIELD: electricity.

SUBSTANCE: invention relates to the field of electric engineering and designs of contactless reducer electromagnetic machines with electromagnet reduction, intended for use as motor - wheels, motor - drums, direct drives in electrical appliances (electric meat grinders, washing machines, etc), electric drives of concrete mixers, weight-lifting mechanisms, belt conveyors, pumps for pumping of fluids, mechanisms with high torque on shaft and low frequencies of shaft rotation, and also as high-frequency electric generators. Proposed contactless reducer electromagnet machine comprises stator with explicit poles, on inner surface of which there are elementary cogs, m-phased focused anchor winding of which consists of coils, each coil covering an appropriate anchor pole, and winding-free ferromagnetic rotor, comprising two inductor cores displaced relative to each other in tangential direction by half of gear division, with toroid permanent magnet magnetised in axial direction and installed between cores of inductor, to develop magnetic flow of excitation. At the same time certain ratios are maintained between number of anchor poles, number of elementary teeth on anchor pole, number of anchor poles in phase, common number of anchor teeth, number of teeth on each inductor core and number of phases of anchor winding of contactless reducer electromagnetic machine.

EFFECT: high power and operational indices, high specific rotary torque on shaft and high electromagnetic reduction of rotation frequency in mode of electric motor, high specific capacity at high frequencies of electromotive force in mode of electric generator.

12 cl, 14 dwg, 1 tbl

FIELD: electricity.

SUBSTANCE: single-phase contact-free electromagnetic generator includes stator with anchor core composed of insulated electrical steel sheets of high magnetic inductivity and features distinct poles with single-phase anchor coil winding where each coil is positioned at respective distinct anchor pole, and winding-free ferromagnetic rotor including inducer with even and odd cores with the same number of distinct poles in each core. Odd and even inducer cores are made in the form of banks assembled of insulated electric steel sheets of high magnetic inductivity, inducer features at least two cores, even inducer cores are shifted against odd cores in tangential direction for a pole half-pitch of inducer core, inducer cores are set on respective magnetic conductors of inducer, annular layers of segmental permanent magnets magnetised in the one direction are positioned between magnetic conductors of inducer. Certain ratio should be maintained between number of distinct anchor poles and number of distinct poles in each inducer core, and between pole arc width of distinct anchor poles and pole arc width of distinct poles of each inducer core.

EFFECT: high reliability and manufacturability of single-phase electromagnetic generator design, good energy and operational characteristics.

9 cl, 4 dwg

FIELD: electricity.

SUBSTANCE: invention relates to peculiarities of design of contactless electric machines with electromagnet reduction and may be used in systems of automatics, as motor-wheels, motor-drums, starter-generators, electric steering boosters, electric drives of large and medium capacity vessels, transport means, concrete mixers, weight-lifting mechanisms, belt conveyors, pumps for liquids pumping, mechanisms with high torques on shaft and low frequencies of its rotation, and also in wind generators, hydraulic generators, high-frequency electric generators and synchronous generators of frequency converters. Proposed contactless redactor electric machine with combined excitation comprises teethed stator with odd and even laminated packs from insulated sheets of electrotechnical steel with high magnetic permeability with explicit poles, on inner surface of which there are elementary teeth arranged. Besides packets of stator in tangential direction are arranged so that axes of their explicit poles located opposite to each other in axial direction in all packets of rotor coincide, and between odd and even packets of stator there is winding of inductor excitation, arranged in the form of ring-shaped coils with longitudinal axis that matches longitudinal axis of machine, coil m-phase winding of anchor, each coil of which is placed on according explicit poles of stator packets and covers one explicit pole of every packet each, and winding-free ferromagnetic rotor with non-magnetic bush, on which odd and even magnetic conductors of rotor are placed with odd and even rotor packets pressed on them as according charged packets made of insulated sheets of electrotechnical steel with high magnetic permeability, and their number equals number of stator packets, with identical number of teeth on each rotor packet, besides even packets of rotor are shifted relative to odd ones in tangential direction by half of teeth division of rotor packet, and between odd and even magnetic conductors of rotor there are circular layers of permanent magnets axially magnetised in the same direction. At the same time certain ratios are maintained between a number of explicit poles in each stator packet, number of elementary teeth at each explicit pole of stator packet, number of elementary teeth on each explicit pole of stator packet, number of explicit poles of each stator packet in phase, number of teeth of each stator packet, number of teeth in every rotor packet and number of phases of m-phase winding of anchor in contactless redactor electric machine with combined excitation.

EFFECT: invention provides for high power and operational indices, high specific rotation torque on shaft and high electromagnetic reduction of rotation frequency in mode of electric motor, and high specific power at high frequencies of EMF in mode of electric generator.

18 cl, 11 dwg, 1 tbl

FIELD: electricity.

SUBSTANCE: invention is related to the field of electric engineering, in particular to slow-speed high-torque electric motors, electric drives and generators, is related to peculiar features of design in contactless electromagnetic electric machines with electromagnetic reduction and may be used in automatics systems, as motorised wheels, motorised drums, starter-generators, electric steering booster, direct drives in household appliances, electric drives of concrete mixers, weight-lifting mechanisms, belt conveyors, pumps for pumping of liquids, mechanisms with high torques on shaft and low frequencies of its rotation, and also as wind power generators, hydrogenerators, high-frequency electric generators and synchronous generators of frequency converters. Proposed contactless reducer electromagnetic machine with multipack inductor comprises stator, anchor core of which is assembled from insulated sheets of electrical steel with high magnetic permeability and has explicitly expressed poles, on internal surface of which there are elementary teeth arranged, coil m - phase winding of anchor, each coil of which is placed on according explicitly expressed pole of anchor, and winding-free ferromagnetic rotor, comprising inductor with odd and even teethed cores with identical number of teeth on each core, odd and even teethed cores of inductor are arranged in the form of packets, which are assembled from insulated sheets of electrical sheet with high magnetic permeability, number of inductor cores is at least two, even cores of inductor are displaced relative to odd ones in tangential direction by half of teeth division of inductor, between magnetic conductors of inductor there are circular layers arranged from segmental permanent magnets axially magnetised in one direction. Besides certain ratios are maintained between number of explicit anchor poles, number of elementary teeth on explicit anchor pole, number of explicit anchor poles in phase, general number of anchor teeth, number of teeth at each inductor core and number of phases in m - phase winding of anchor of contactless reducer electromagnetic machine with multipack inductor.

EFFECT: provision of high energy and operational indices, high specific rotary torque on shaft and high electromagnetic reduction of rotation frequency in mode of electric motor, and also high specific power at high frequencies of EMF in mode of electric generator.

12 cl, 15 dwg, 1 tbl

FIELD: electrical engineering; mechanical design of rotor systems for permanent-magnet commutatorless electrical machines.

SUBSTANCE: proposed rotor magnetic system has electric steel stampings and N-S radially saturated magnets in the form of rectangular parallelepipeds uniformly disposed within stack of rotor stampings over its circumference. Rotor magnetic system section is assembled of four stacks joined by bars whose length is not smaller than that of section; like-polarity magnets alternately disposed in tandem are offset in axial direction through one fourth of stator slot angular pitch. Rotor magnetic system manufacturing process includes fabrication of two types of stampings wherein key slot and fixation holes for assembling stacks in section are offset relative to magnet holes through angles equal to (1/8)(360/Z) and (3/8)(360/Z) of stator slot angular pitch, respectively, where Z is double product of phase number by pole pair number and slot number per rotor pole and stator slot. Stacks whose number should be a multiple of four are assembled by installing magnets in them and joined in sections so as to ensure relative displacement of magnets in stacks arranged in tandem by one fourth of stator slot angular pitch. Alternative manufacturing process for rotor magnetic system includes fabrication of three types of stampings wherein key slot and holes for assembling stacks in section are offset relative to holes for fixation of magnets through angles equal to (3/40)(360/Z), (9/40)(360/Z), and (15/40)(360/Z) of stator slot angular pitch, respectively. Then stacks whose number should be a multiple of six are assembled by installing magnets in them and joined in sections so that magnets are relatively offset in stacks arranged in tandem by one sixth of stator slot angular pitch.

EFFECT: enhanced performance characteristics of commutatorless magnetoelectric machines, facilitated rotor manufacture, enlarged functional capabilities of such machines.

10 cl, 6 dwg

FIELD: wind power engineering; wind electric generators.

SUBSTANCE: proposed stator of wind electric generator contains magnetic circuits, excitation system, bracing members and winding. According to invention, stator is made in form of two pairs of U-shaped magnetic circuits. Upper pair is pointed with bridges downwards. Excitation system is installed between adjacent points. Lower pair is pointed with bridges up-wards and is enclosed by coil located between adjacent posts.

EFFECT: reduced mass and overall dimensions of generator at minimization of its cost.

3 dwg

FIELD: low-power single-phase synchronous motors.

SUBSTANCE: proposed synchronous motor has stator with U-shaped magnetic core carrying field coils, cylindrical rotor in the form of diametrically saturated permanent magnet, two fastening plates, and laminated locating device for unidirectional starting of rotor. Laminated locating device is installed with its one end on axis of one of fastening plates for rocking and on other end it has shaped hole coaxial with rotor which is provided with two projections formed by shifting two semicircles and is engageable with cam disposed on rotor end eccentrically to axis of revolution, its lateral end directed to interlocking end being disposed on rotor radius line; in order to avoid rotor entering dead zone during starting period, common axis of projections on laminated locating device is inclined through angle of 40 - 55 deg. to stator pole axis, and rotor cam axis is inclined through 90 deg. to rotor pole axis.

EFFECT: simplified design, reduced size of interlocking device in single-phase synchronous motor.

2 cl, 2 dwg

FIELD: electricity.

SUBSTANCE: invention refers to the design of non-contact electric machines with electromagnetic reduction and can be used in automation systems, in military equipment, as motorised wheels, motorised drums, starter-generators, electric steering wheel boosters, direct drives in domestic equipment, electric drives of high and average power of ships, trolleybuses, trams of the underground, concrete mixers, lifting mechanisms, belt conveyors, liquid transfer pumps, mechanisms with high torques on the shaft and low frequencies of its rotation, as well as direct drives without using any mechanical reduction gears, as well as wind-driven generators, hydraulic generators, high-frequency electric generators, synchronous generators of frequency converters and as controlled stepped motors. Non-contact electric reduction machine with axial excitation includes stator with housing made from soft magnetic material with odd and even packs of stator, which are laminated and consist of insulated electrotechnical steel plates with high magnetic permeability, and the number of which is not less than two; non-magnetic shaft with bushing from soft magnetic steel with high magnetic permeability with odd and even rotor packs with high magnetic permeability, which are laminated and consist of insulated electrotechnical steel plates, and the number of which is equal to the number of stator packs; stator packs contain salient poles uniformly distributed along cylindrical surface, on inner surface of which there are elementary teeth; the number of salient poles on each stator pack is the same; the number of elementary teeth on each salient pole of stator pack is the same; stator packs in tangential direction are located so that axes of their salient poles located opposite each other in axial direction coincide; rotor packs contain the teeth uniformly distributed along cylindrical surface and the number of which on each rotor pack is the same; even rotor packs are offset relative to odd rotor packs in tangential direction through the half of tooth division of rotor pack, on salient poles of stator packs there is coil m-phase winding of armature, each coil of which in axial direction envelopes the appropriate salient poles of even and odd stator packs of one pole of each pack and can be frame for the purpose of manufacturability; between stator packs there located is excitation winding of inductor, which is made in the form of ring-shaped coils with longitudinal axis coinciding with longitudinal axis of machine, number of ring-shaped coils of excitation winding of inductor is one less than the number of stator packs. At that, for serviceability of machine there shall be certain relations between the number of salient poles of armature, number of elementary teeth on salient pole of armature, number of salient poles of armature in phase, total number of armature teeth, number of teeth on each pack of rotor and number of phases of m-phase armature winding.

EFFECT: manufacture of high-technology constructions having the possibility of using frame coils of armature winding of non-contact electric reduction machines with axial excitation and using electromagnetic reduction in wide ranges at providing high energy parameters and operating characteristics with possibility of smooth and deep control of output parameters.

9 cl, 5 dwg, 1 tbl

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