SU1175004A1 - Multiple d.c.electric machine - Google Patents

Abstract

MULTIPOLUS ELECTRIC DC VOLTAGE MACHINE, containing an inductor with

Description

The invention relates to an electron to hinostroeniya can be used in DC torque motors with increased requirements for ensuring the rotation frequency constant within one revolution or its part, in tachogenerators of analogous design with increased requirements for the output ripple tension The aim of the invention is to simplify the design and reduce the laboriousness of manufacture. Fig. 1 shows the schematic diagram of the proposed electric car for the case, Fig. 2 is the same in the coordinate system expressed in electrical degrees. The electric machine contains an inductor with (2m + 2p) 10 poles 1 alternating polarity. Measles with a non-overlapping winding

PSI of S 1 (2P-1) 7 spiral-wound sections 2 (Fig.1 and 2, 1c-7c),

Collector plate Beginning of sections End of section 1TS1Y When voltage is applied to brushes 4-13, current flows through the following circuit: brushes 4 and 10, plates 1L and 5L collector, two parallel winding branches, the first of which consists of series-connected sections 1c, 4c and 7c, and the second - 5c, 2c and 6c, 3l collector plates, brush 7. As a result of the interaction of the current flowing through the sections 1c-7c, with the magnetic field of the inductor poles 1, an electromagnetic moment occurs, under the action of which the measles rotate. At the point in time corresponding to the mutual arrangement of the brushes and the collector shown in Figures 1 and 2. Section 5c is shorted by brushes 4 and 10, i.e. is in commutation mode. „When you turn the core through an angle --- P in the direction shown by the arrow, in the commutation mode there are brushes 13, 6 and 10 and section 2c, and the moment

.connected to the collector plate with the number - + y, the plate numbers -5 and + y are determined by the

to the equation. ,

The order of connection of sections is given in the table.

2l 3l 4l 5l 6l 7l

4c 7c 3c 6c 2c 5c 7c 3c 6c 2c 5c 1c connected to evenly distributed circumferentially angularly one relative to the other by 2 sec lOoc 51 25, collector angle - plates 3iri 2 angularly wide b d - .. I am glad, figures 1 and 2-1l 7l), and a brush assembly containing 2p 10 brushes 4-13, made with an angular width of 2 and 27 -pTs - 35-P Sections 1c-7c are connected to collector plates 1l-7l, the connection is so that the beginning of section i is connected to the collector plate with number v, and the end of this section is created by sections 1c, 2c, 4c, 5c, 6 and 7c, while in one of the parallel branches are present 6c sections 3c and 7c, and the second consists of sections 5c, 1c and 4c. The proposed machine is operable in the presence of a complete set of brushes, as with the help of the latter sections are connected depending on their position. When considering the geometric structure of the brush-collector device of the proposed electric machine in the polar coordinate system, expressed in electrical degrees, the axes of the single brushes 4,6,8,10,12 and 5,7, 9,11,13 coincide and are shifted by one relative to the other angle and electrical degrees (figure 2). 27 2ii j 0 (plus PJ (minus brushes 27 j ki) where J are the numbers of unipolar brushes in order of increasing. The axes of adjacent collector plates in this coordinate system are shifted relative to each other by an angle of / 3 2 and are located as shown in Figure 2. It follows from FIG. 2 that the proposed electric machine, reduced to the polar coordinate system expressed in electrical degrees, is similar to the electric machine of known construction. From Figure 2 it follows that with a width of 2 1 to 1 1 collector plate, LC P S - P and brush width b pS exclude short-circuiting bridging groups of brushes and the section is switched from one parallel branch to another when passing through the neutral position.When determining the number of shorted sections in the winding, it is necessary to take into account the geometrical position of the brushes and the collector plates in accordance with figure 1. Thus, the proposed the design is substantially simplified by reducing the number of collector plates by several times and eliminating conductive bridges, which reduces the laboriousness of manufacturing the collector. The need to install a complete set of brushes does not significantly complicate the manufacturing technology of the proposed electric machine. Expansion of the technical implementation area when using machines of the proposed design achieves with Ba the fact that the reduction in the number of collector plates makes it possible to manufacture the collector with the required uniformity of plate distribution around the circumference. The area of technical and economic feasibility of the implementation of machines under consideration begins ri. Improving the reliability of the machine is achieved by reducing the number of paired connections, reducing the number of collector plates and disconnecting the conductive bridges.

7c

13

ten

/ s, f "

Claims (1)

MULTI-POLAND DC ELECTRIC MACHINE, containing an inductor with 2p = 1 (2sh + 2n) poles of alternating polarity, an armature with a non-overlapping winding, consisting of S = l (2n-1) sections connected to collector plates evenly spaced around the circumference, and with 2p brushes, characterized in that, in order to simplify the design and reduce the complexity of manufacturing, the collector contains S collector plates with an angular width satisfying the condition that the beginning of sections with number £ is connected to the collector plate with number} , i = (Ση-Οίηϊ ”'ЯП ⁺ “ η-l) [f / yi ·, · and the end of the section with number i is connected to the collector plate with number 9 ⁺ У> where bc is the angular width of the brush; S _K + 1 U _ _ _pitch winding; K is the smallest number that ensures the fulfillment of the condition ---- is equal to a positive integer; 1 and m are equal to ^ 1,2,3 ...; 'n = 2,3,4 .., F ₂ - operator for selecting the fractional part of the mixed fraction; F _n t is the operator for extracting the integer part of a mixed fraction. SU ,,,, 1175004>