SU1249649A1 - Armature of electric machine - Google Patents

Abstract

The invention relates to electric machines and can be used in the manufacture of direct current machines. The purpose of the invention is to increase the efficiency of the slot scatter field during switching, to increase the reliability and use of the energy of the mortise: scatter field. Anchor contains damping - winding 1-6, placed on the base-. Research Institute grooves 7, under the sides of 8-13 sections 14-16 winding box. In the plane of section 14, damper windings 1 and 2 are located, winding 1 is wound in accordance, and winding 2 is opposed to section 14 and all of them are connected in series. Similarly, windings 3 and 4, 5 and 6 are made and placed with respect to sections 15 and 16, respectively. Axis 17 of winding 1 damping section 14 coincides with axis 18 of winding 6 damping section 16, and axis 19 of winding 2 damping section 14 coincides with axis 20 of winding 3 of section 15. Axis 21 of winding 5 of section 16 coincides with axis 22 of winding 4 of section 15. This design and connection of windings eliminates capacitors and increases the reliability of the machine. 3 il. (L

Description

The invention relates to electrical machines and can be used in the manufacture of direct current machines, universal collector machines, etc.

The purpose of the invention is to increase the efficiency of damping a grooved scatter field during switching, increasing reliability and ensuring the use of the energy of the grooved scatter field.

FIG. 1 shows a damping device when disconnecting sectional sides, a cross section; in fig. 2 - damping device with sectional strones turned on, cross section; in fig. 3 - a circuit of the main winding of a direct current machine with an open winding of the core and a damping device is deployed.

Anchor contains damping coil-. ki -1-6, placed on the basis of the slots 7, under the sides 8-13 sections 14-16 winding of the box. In the plane of section 14, there are two damper windings 1 and 2, with the first damper winding being wound in accordance, and the second damper winding 2 is opposed to winding section 14 of the core. The damper windings I and 2 and section 14 are connected to each other in series. Similarly, in the plane of the subsequent section 15 and the previous section 16, respectively, damper windings 3 and 4 and 5 and 6 are located and connected.

The axis 17 of the first damping winding 1, the damping section 14 coincides with the axis 18 of the second damping winding 6, damping the pre-section 16, and the axis 19 of the second damping winding 2 of the same section 14 coincides with the axis 20 of the first damping winding 3, damping the next section 15. The axis 21 of the first damper winding 5 of section 16 coincides with the axis 22 of the second damper winding 4 of the previous section 15. Section 14 of the core and first 1 winding and second 2 of the damper windings are connected to the collector plates 23 and 24. Section 15 of the core and first 3 windings 3 and the second 4 damper s windings are connected to the collector plates 25 and 26. The section 16 of the armature winding and the first 5 and second 6 damper winding connected to the collector plates 28. The collector plates 27 through brushes 23-28 and valves 29-33 34-38

s

0

five

0

five

0

five

0

five

connected to mains voltage. Yashina also contains inductor 39.

The device works as follows.

In the DC motor mode (Figs. 1 and 2), the sectional sides 8-13 of the windings of the core and the damper windings 1-6 move along the arrow D in the field of the inductor 39 in them are induced. EMF and under the action of the supply voltage U, the current i flows. Simultaneous parallel connection of sectional sides 8-13 and damper windings 1-6 to the network and the flow of current through them (Fig. 2) does not change the resulting magnetic flux of the scattering during the passage of sectional sides 8-13 of the pole division IT.

The transition of the brush 30 (Fig. 3) from the collector plate 24 to the plate 27 causes the sectional sides 8 and 11 to be disconnected from the network, due to which, instead of the current i in the opposite direction, the current of the disconnected section flows through the EMF only

1 „(fig. 1).

The electromagnetic power stored by the sectional sides 8 and 11 is transformed through the side of section 8 and ds-spherical winding 1 into the damper winding 6 and sectional sides 12 and 9, and through the side 11 of section 14 and the damper winding 2 into the damper winding 3 and sectional sides 10 and 13. In this case, the damper winding 6 creates a magnetic flux Φ, damping the magnetic field scattered by FL, created by sectional sides 8 and 9, and the resulting magnetic flux of mutual induction Φy induces an additional emf in the damper winding 6. additional current, which coincides with the direction of current i .. in section 16. Damper coil 2 creates a magnetic flux Ф „, damping the magnetic flux of scattered by sectional sides 10 and П, and the magnetic flux of mutual induction Фдй induces in the damper coil 2 an additional EMF, creating an additional current that coincides with the direction of the current i. in section 15. Additional components of currents, flow through sections 16 and 15, and reciprocal. And with the main magnetic field of the inductor 39, create an additional positive torque. The increase in the mutual inductive coupling between windings 1 and 6, 2 and 3, A and 5 is due to the small air gap and the unbiased magnetic circuit of the machine.

 Thus, switching in series with sectional sides 8 and 11, windings 1 and 2, having inductive resistance, leads to a decrease in the high-frequency component of the breaking current. The transition of the brush 29 from the collector plate 25 to the collector plate 24 again connects the sectional sides 8 and 11 to the supply voltage.

. The EMF of section 14 E, created by the main magnetic field, is directed opposite to the applied voltage U ,. and reduces the switching current of section ig. In motor mode, the applied voltage and more EMF E induced in section 14, therefore, the current. Inclusion 1. (Fig. 2) increases

about

With a HIGH gradient in the direction of the applied voltage U, which leads to an increase with a high current gradient in both the first damper winding 1 and the second damper winding 2 and a corresponding increase in the high EMF gradient in the second damper winding 6 of the section 16, in the first damper winding 3 of the subsequent section 15 in the direction of the applied voltage.

HC: Increasing in high emf gradient in the damper windings 3 and 6, respectively, in sections 15 and 16 induce additional currents that coincide in direction with current i. these sections. Additional currents, interacting with the main magnetic field, create an additional positive electromagnetic moment.

Switching current 1 "secD

14 is limited by its active resistance R, as well as the value of the emf induced in the damper windings 1 and 2, directed opposite to the switching current ig, and which correspond to the impedances of these windings S, and Z, which have large inductive components to the resistances. and X due to the fact that the value of the air gap is about 10 times smaller than the width of the groove.

Thus, consistently with the sides of the section, the dump

j

JO 15

20

25 so;

Q

Q

five

Ferric windings having a large inductive resistance also substantially limit the high-frequency component of the switching current. The sections 15 and 16 are turned off and on and are performed similarly.

The damper windings 1 and 2, respectively, with the damper windings 6 and 3 have a magnetic coupling, and with the sectional sides 8 and 11 also have an electrical connection, which increases the efficiency of damping the field of the slot scattering of the electric machine during switching.

Thus, the proposed device allows reducing the damping time constant, increasing its efficiency, it is useful to use switching energy to create additional machine torque, and to increase reliability by eliminating capacitors, especially at high rotational frequencies.

Claims (1)

Invention Formula An anchor of an electric machine containing damping windings placed in grooves together with core winding sections and interconnected in series, characterized in that in order to increase the efficiency of the damping of the grooved scatter during switching, increasing reliability and ensuring energy use the slotted floor, the sides of the damper windings are evenly distributed. across the width of the core grooves on their base, in the plane of each section of the core winding there are two damper windings, the sides of which are placed under the sides of this section of the previous and subsequent core winding sections, the first damper winding is wound in accordance, and the second is opposite to the winding section - p, in the plane of which they are located, both damper windings are connected in series with this section of the core winding, and the axis of the first damper winding of this section of the core winding coincides with the axis of the second damper The second winding of the previous winding core section, and the axis of the second damper winding of the same winding core section, coincides with the axis of the first damper winding of the subsequent winding section of the core. FIG. and  t 41i / Vv / Xxx /. V-v . Uch Compiled by V. Tregubov. Editor A. Sabo Tehred M. Khodanych M. Corrector Order 4336/56 Circulation 631 Subscription VNIIPI USSR State Committee by. Inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab. 4/5. Production and printing company, Uzhgorod, Projecto st., 4