RU286U1 - Three-phase synchronous gear motor - Google Patents

Abstract

A three-phase synchronous gear motor containing a gear stator with pronounced poles, a three-phase power winding, the coils of which cover one or three distinct poles, and a winding gearless rotor, the tooth pitch of the stator is equal to the tooth pitch of the rotor, the teeth of the poles of the second and third phases of the winding are offset relative to the axis of its poles into the third part of the tooth division in mutually opposite directions, characterized in that the power winding is connected in a triangle, and one phase is connected to each winding directional diode.

Description

THREE PHASE SYNCHRONOUS RBdASTORNSH ENGINE

The invention relates to edvtrichvskim machines of low power and can be used to create low-speed synchronous electric drives.

Known synchronous geared motor (patent СЖ Ш535604, 1970, Кл, НОЖ 37/00), consisting of a gear stator with newly opened poles, on which three-phase winding coils are located, and without (external gear rotor, the tooth pitch of the stator is not equal to the tooth pitch of the rotor, each phase of the winding consists of two parallel branches, each branch includes coils of poles of the same polarity in series with the diode cm, the diodes in adjacent parallel branches have an opposite direction.

The disadvantages of these motors are a large number of diodes, equal to twice the number of winding phases, and their low efficiency, due to the fact that only one pair of stator teeth and rotor teeth on each pair of poles of one phase of the winding participate in the creation of torque.

Also known is a three-phase geared motor (application M446567 / 07 from 11.04.88 with a positive decision on the issuance of a.s. from 06/29/89), consisting of a gear stator with two three-phase windings on clearly defined shakes and a non-drainage gear rotor, the tooth pitch of the stator is equal to the tooth pitch of the rotor. The teeth of explicit stator poles of the second and third phases are shifted relative to the axes of their fields by I / g of tooth division in mutually opposite directions, Syra is connected to a star and connected to the network, and the second is connected into a closed triangle.

 application 5003553/07

4. Cd Pozh IO / -Q & /

In such an engine of equality of the tooth pitch of the stator to the tooth pitch of the rotor, in @ 1shp at the moment all the pairs of teeth of the stator and those that ride on one of the explicit stator jaws are involved,

This technical solution is closest in technical essence and achieved effect to the claimed.

The disadvantages of the known dvigatel are the presence on the stator of two windings, which lead to an increase in the complexity of manufacturing the motor, and depending on the speed of rotation of the rotor from the load.

The aim of the present invention is to synchronize the motor with a permanent magnetic rod at low rotation speed, reduce its cost and code.

This goal is achieved by the fact that in a three-phase synchronous geared motor containing a gear stator with clearly defined poles, a three-phase power supply and a winding gearless rotor, the tooth pitch of the stator is equal to the tooth shaft of the rotor, the teeth of the poles of the second and third phase are shifted relative to the axes of their poles by a third of the tooth shaft in mutually opposite directions, according to the invention, the cadre coil of the winding covers three distinct poles at the same time, the winding is connected in a triangle, in each phase of the winding TKI vshopen unidirectional diode.

Comparative analysis of the prototype shows that the inventive electric motor meets the criteria of novelty.

Comparison of the proposed solution not only with the prototype, but also with other technical solutions in the field of technology (5 areas of technology, did not allow them to reveal circuits, distinguishing the claimed solution from the prototype, which allows significant determination of the criterion 6 according to the criterion.

shows a cross section of the engine, in FIG. 2 - connection diagram of a three-phase winding of a dvashitel and diodes.

The three-phase SINZFONNBEY gear motor consists of a stator I, which has a distinct pole 2,3,4,5,6,7 with serrated combs 8,9,10,11,12,13, and without (otokochnogo gear rotor 14. Teeth 10,13 and 9.12 poles, respectively, 4.7 and 3.4, belonging to the second and third phases, are displaced relative to the axes of their poles by the third part of the pupillary division in mutually opposite directions, shown by arrows A and B. The stator tooth pitch is on the rotor tooth pitch, coils 15.16, 17.18 and 19.20 of the three phases of the bipolar windings are located on clearly defined poles 2 "-7 and a stator. A kaadaya from Katunyuk, for example 15, simultaneously covers three distinct poles, for example 2,3,7, The phases of the stator winding are connected in a triangle, 1sack in Fig. 2. Diodes 21,22 and 23 are connected in series with the Katuta in the cw phase. having unidirectional inclusions in all phases,

The principle of operation of the claimed electric motor is as follows.

With the help of diodes 21.22, and 23, half-wave rectification of the current occurs in the phases of a three-phase winding. The constant component of the rectified currents tsvf1 googles along the closed triangle of the stator winding and DOES NOT ENTRY into the network. The direct current of each of the phases of the winding creates a magnetizing ons (not) in the input of the sum of the standing waves of spatial harmonics. Of these, the sum of standing waves of harmonics of orders

in 1,5,7 ... (not a multiple of three), due to the spatial shift

p windings of phases at - pole divisions: о o (swelling, is zero. In the spectrum

NS stator winding remaining only harmonics that are multiples of three, which

f c) 3P "fri3Jgi, (I)

where is the pole division of the winding;

ffo is the pole case; the manifestation of the explicit stator poles.

Since the potassium willow coils simultaneously cover three newly mapped half-stators, the amplitudes of all harmonic components of the non-stator will be larger, unlike any other arrangement of the axis coils.

Variation of the components of the rectified phase currents are displaced relative to each other in time by 120 electrical degrees. Flowing through the phases of the winding, which are also displaced relative to each other by 120 electrical degrees in space, they create a rotating NS stator.

ffy. "f fvCwl-

uto

(2)

Kalzdaya from not (I) and (2) affects the magnetic conductivity of the toothed gap, which is defined as

) “CosIzu / ft-lir -DO (3)

where fl is the sequence number of the phase, 1,2,3;

 - magnetic conductivity uniform reduced

air aeor; D.-2- the amplitude of the magnetic conductivity of the tooth layer

stator w poTOpi At a rotor speed of

the magnetic flux due to not (I) and the variable component of conductivity (3) varies with the frequency of the cc network and interacts with the potoxm due to ncC2) and magnetic conductivity / N, synchronizing the motor at a low rotor speed.

. GOt /

Pa Mr. UMICH, (5)

where is the network frequency;

2. - the number 8y (fc | OB of the rotor.

Similarly, the magnetic flux from not (2) and the tooth conductivity / s potoxm from NS (I) and conductivity b interact at speed (4), they are mutually unsuccessful in space.

In every moment of time, the electromagnetic moment is created by pairs of stator and rotor teeth, traveling on one clearly expressed stator pole, for example 2. Electromagnetic forces created under the other poles, for example 4 and 6, due to the shift of the teeth by one third of the tooth division, are mutually opposite and destroyed. Thus, the number of interactive pairs of stator and rotor teeth in the declared engine is much larger than in the analogue of the US patent. L3535604. B. The consequence of this is larger and the engine. Performing revolutions from coils spanning simultaneously three distinct poles leads to the highest amplitude not Fo of direct current, which will also lead to an increase in the ccc motor,

As for the cog pairs of the stator and rotor under adjacent poles, for example 3,5 and 7, then, as in the analogue under this pole, the resulting magnetic flux is determined by the difference in fluxes from not (I), (2) and conductivities 7 and 9, respectively. This difference with a half-wave rectified rectifier is not significant and can be neglected without damage.

The proposed engine has a lower laboriousness of manufacturing (about two times) due to the presence of only one winding on the stator, and, as a result, lower cost due to reduced laboriousness and fewer diodes (the number of diodes is reduced by half compared to the analogue) , higher efficiency (several times) due to the increased number of tooth pairs of the stator and rotor, creating a moment of inrush, and the execution of windings from coils that simultaneously cover three distinct stator poles. The motor is synchronized by a constant magnetic flux at a low rotor speed (5).

FORM MtiUiiHiJlbliMH

A three-phase synchronous gear motor containing a gear stator with clearly defined poles, a three-phase power winding and a winding gear rotor, the tooth stator pitch is equal to the tooth pitch of the rotor, the teeth of the pschlus and the third phase are offset relative to the axes of their poles by a different part of the tooth division in the upside the fact that, in order to synchronize the motor at low speed, reduce its speed and increase the code, each coil of the winding covers

At the same time three clearly visible poles, the winding is connected in a triangle, and in each phase of the winding VK®Uavn - winnvravlnvlbny diode. / Head of patent odela Author / U /, Mr. Brigadina R.N. .,. // Kurakin A.S.

Claims (1)

A three-phase synchronous gear motor containing a gear stator with pronounced poles, a three-phase power winding, the coils of which cover one or three distinct poles, and a winding gearless rotor, the tooth pitch of the stator is equal to the tooth pitch of the rotor, the teeth of the poles of the second and third phases of the winding are offset relative to the axis of its poles into the third part of the tooth division in mutually opposite directions, characterized in that the power winding is connected in a triangle, and one phase is connected to each winding directional diode.