SU458929A1 - Induction machine - Google Patents

Description

The invention relates to the field of electrical engineering, namely to multiphase inductor machines of high and high frequency un-polar design. The inductor machines have the best weight and dimensional parameters in a single-phase design with a classical tooth zone. In this case, the number of teeth of the core is equal to twice the number of teeth of the inductor. Designs of inductor machines with a three-phase core winding are also known, in which the number of teeth of the stator Zc is not equal, but close enough, to twice the number of teeth of the rotor ZP and is related to each other by the ratio: 7 - - + 1 P 2 caused by both the manufacturing technology and the specificity of the machine working conditions, which have a significant effect on the symmetry and shape of the phase voltages. The aim of the invention is to eliminate this disadvantage. To this end, each phase of the multiphase stator winding is made up of at least three coil groups or branches, evenly spaced in separate zones in the stator area of the stator. The stator coils belonging to a single branch or group, Hia are located several standing stator teeth. In order to form a multiphase system, the number of teeth of the stator and the rotor are selected according to the relation: Zc 2Zp ± 2К, (2) where Zc is the number of teeth of the stator; ZP - the number of teeth of the rotor; - the number of branches in each phase. In this case, between all groups, .r. And. Light. And one phase of the stator winding, the shift in electrical degrees should be absent. To eliminate the effects of vibrations and rotor beats, all branches belonging to the same phase are connected in series. FIG. Figure 1 shows one of the possible locations of atyushka groups along a bore for a three-phase stator winding; in fig. 2 is a schematic of the connection of the stator winding coils. The machine contains a gear rotor 1, a gear stator 2, a stator winding 3. Phase A of the crust winding consists of three branches: E AZ, Ls; phase B - from the branches B, BZ and Bz; phase C - from the branches of Cz Cz and Cz. The number of teeth of the rotor in this example is 15, and the number of teeth of the stator 36. The coils of each phase are located on the 12 teeth of the core, and each of the three branches of one phase consists of four coils located on four adjacent teeth of the core.

The electric angle a between the two co-ed. And teeth of the core is

)

 - - P - - - email. hail. (3)

36

6

Zc

The angle 7 between the two neighboring branches, which is determined by the four prong divisions of the corr, in this case is equal to 240 el. lrad. because

7 4a 4.. 2: g (2 -) EL. hail. (four)

The two branches of the same phase are shifted relative to each other by twelve dentate divisions of the core, and there is no shift in electrical degrees between "because they are

a - 12a - 12-- 5-2- el. hail. (5) 6

FIG. 2 numbers 4-9 designate the conclusions of the three-phase stator winding.

The proposed inductor machine provides a reduction in higher harmonic emf. in the phase voltage curve due to

some shortening or extension of the coil pitch and distribution of the coils in the group, as well as the absence of the influence of vibrations and beats of the rotor on the symmetry and shape of the phase voltages.

Subject invention

Inductor: A machine with M (Nogophaz1Noy yakorny winding, each phase of which consists

of the series-connected branches, containing their coils, located on separate stator teeth, made with a constant tooth pitch close to the electrical degrees, with a non-winding toothed rotor and an excitation ring winding: but with the aim of not the influence of vibrations and rotor beats on the symmetry and shape of phase directions: branches, branches, and in each phase are made with several coils located on adjacent teeth, and placed in the stator symmetrically, and the number of teeth stator and rotor connected by ratio

Zc 2Zp ± 2K,

where Ze is the number of stator teeth; ZP - the number of teeth of the rotor; / C 3 - the number of branches.

All llllllllllllll I I I I M I I I I II II II I I || II II I I h II II I I MP 1 {H V 1 M W | C-JI 1 | II A l l l llll pmmm I II II II II II I I I II II I I m P p; V M M} (I .- IL.J