JPS61112556A - Dc rotary machine - Google Patents

Abstract

PURPOSE:To improve the degree of freedoms of a layout by suitably selecting the diameter of equalizing wirings, and providing a brush at the position corresponding to one of the wirings, thereby reducing the number of brushes. CONSTITUTION:A DC rotary machine is formed of main poles N, S, brushes B and an armature widing 1, and equalizing wirings 8, 9 for connecting between the equal potential points of the winding 1 under positive and negative terminals 4, 5 and the brushes are provided. In this case, the wirings 8, 9 for connecting between the equal potential points are increased in thickness, a brush B is provided only at the position corresponding to one on the wirings 8, 9 to provide a function of the same polarity parallel connecting conductors. Thus, the brushes of the same polarity and the parallel conductors of the same polarity can be omitted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a DC rotating machine, and particularly to an armature and a brush in which the armature winding is configured in a lap-wound manner.

[Conventional technology]

Figure 5 shows, for example, the Institute of Electrical Engineers of Japan University Lecture on DC Machines (Showa Q2, 3rd year
First published on March 20th, 9th Publisher: Institute of Electrical Engineers of Japan) P.

This is a principle diagram showing the winding connection arrows of the conventional Hirokoku lap winding DC rotating machine shown in g6. In the figure, N and S are the main poles, B, , B are the positive brush, and B .

The horse is a negative brush, the sign (1) is the armature winding, (su, (3)
is the conductor that connects brushes of the same polarity in parallel, (su, (ri) are the positive terminal and negative terminal. C6), C7) are the equalized voltages connected between the same potential points of the winding under the top brush It is a wire connection.

These voltage equalizing connections (4J, (7)) are also attached to the armature winding at appropriate intervals, but are omitted in the principle diagram.

Next, the operation of a DC generator will be described as an example of such a DC rotating machine.

As the armature rotates, an electromotive force e is generated in the direction of the arrow in the armature windings (υ) under the main poles N and S, and the brushes B, , B, , provided at the midpoint of the main poles are A voltage e is generated between the positive and negative terminals (!r) through B, B. Now, ignoring the internal resistance of the armature circuit,
(5) If a load resistor R is connected between the two, the load current will flow.

In the equalizing connection (7), when the generated voltage e is uneven due to the unevenness of the main pole magnetic flux, by correcting the unevenness with a circulating current, the parallel connected conductor (2), (
The same potential points are connected in order to prevent circulating current from flowing through J) and deteriorating rectification.

Figure 6 shows Figure 5 as a circuit diagram, and shows Figure 5 as a circuit diagram.
Components with the same reference numerals as those in the drawings have the same functions.

A conventional DC rotating machine with lapped windings on the armature is constructed as described above, so brushes are provided at the midpoint of each main pole N and S, and the same number of brushes as the number of poles are arranged at an equal pitch. It is set up.

[Problem that the invention seeks to solve]

Conventional DC rotating machines with lapped windings on the armature are constructed as described above, so space is always required on both sides for maintenance and inspection of the brushes. When a DC rotating machine is incorporated into a device to which it is attached, there are drawbacks such as layout constraints such as the need to secure the above-mentioned necessary space.

SUMMARY OF THE INVENTION An object of the present invention is to provide a DC rotating machine which eliminates the above-mentioned drawbacks of the conventional DC rotating machine, reduces space constraints required for brushes, and has a simple configuration.

[Means for solving problems]

In the DC rotating machine of this invention, the pressure equalizing wire connecting between the similar points of the armature winding is made thicker, and brushes are provided only at positions corresponding to the points on the main wire to equalize the pressure. By providing the function of parallel connected conductors of the same polarity to the wiring, it is not necessarily necessary to have the same number of brushes as the number of poles, and only a minimum of 2 brushes are required.Although it is a DC rotating machine with M lap windings, maintenance and maintenance are easy. This is a DC rotating machine that requires only one side of the space for inspection.

[Effect]

Since the DC rotating machine of the present invention is configured as described above, the voltage equalizing connection of the present invention has both the zero function with other brushes of the same polarity and the same polarity parallel connected conductor, and an electromotive force is generated at the terminal. You will be able to bring out the

〔Example〕

Hereinafter, this invention will be explained based on the drawings showing a disaster example thereof.

Fig. 1 is a principle diagram showing the winding connection of a DC rotating machine having an armature configured by the super-overlapped windings of the present invention; the numbers are the same as those in Figs. indicates something that has the same function.

In Fig. 1, the symbols (II) and (?) have an appropriate wire diameter and are equalizing connections connected to the armature winding under the top brush, and have the same polarity as shown in Fig. 5. the other brush 8
U, B, and their respective parallel connected conductors (K).

(3) is not provided. The other structure is the same as that of the conventional direct light rotating machine.

Next, the operation of the DC generator of the above embodiment will be explained.

The armature rotates, an electromotive force e is generated, and the brushes B, ,B
, electric power e is generated at the fixed terminal (5) and flows through the load 'ULH,I due to the load resistance R, which is the same as in the conventional one (Fig. 5), but the armature = The current 1 in the machine winding flows through the equalizing connection connected to the TJL machine winding under the block run, forming a path as shown by the broken line in Figure 1.For this reason, the equalizing connection Since a current of 21 mm will flow, it is necessary to make the wire diameter thicker for thermal reasons compared to the conventional pressure equalizing connection unit.

In reality, the current is applied only under the brush, so the RM8 value is small and the wire diameter increases only slightly. In this way, when the connected armature winding is under severe pressure, the voltage equalizing connection connecting the same potential points of the armature winding has the same function as the other brushes of the same polarity. It also has the function of a pole-parallel connected conductor, and these parts are omitted. FIG. 2 is a circuit diagram of FIG. 1, and the same reference numerals as in FIGS. 5, 6, and 1 represent components having the same functions.

2. In the above example, the generator of Hirogoku was shown, but
The same applies to electric motors, and the number of poles is limited to Hiropoles, but the same poles may be used.

Figure 3 is a conceptual diagram of the armature circuit in the case of 6 poles,
Items with the same numbers as those in Figures 1 to 4 have the same functions, and the codes (lθ) and Cl/) are equal-voltage connections connected to the armature winding under the nail skin plan. . In this case, the armature unwinding current 1=1 flows through the edge of the pressure equalizing box as shown by the broken line, and the same effect as in the above embodiment is obtained.

Further, the positive and negative brushes do not necessarily have to be opposite poles.

Furthermore, Fig. 9 is a conceptual diagram of the armature circuit in the case of poles, in which the same numbers as in Figs. This is a voltage equalizing connection connected to the armature winding located at B7, and brush B is not in a position where it straddles B7. Then, the electric machine pre-winding flow 1 flows through the equalizing connection as shown by the broken line, and therefore has the same effect as the above embodiment.

〔Effect of the invention〕

As described above, according to the present invention, in a DC rotating machine in which the armature is constituted by lapped windings, the wire diameter of the voltage equalizing connection is appropriately selected, and the position corresponding to l point of the voltage equalizing connection is Since the brushes are placed in the same direction and the other same-polarity brushes and parallel conductors of the same polarity are omitted, the number of brushes that need to be installed can be reduced, and the space required for maintenance and inspection of the brushes can only be installed on one side. In addition, since the position of the inspection window can be freely selected, there are fewer restrictions due to the above-mentioned space installation, which increases the degree of freedom in the layout of the machine, and also eliminates the need to install one brush and parallel conductors of the same polarity. This has the effect of providing a DC rotating machine with a simple armature.

[Brief explanation of the drawing]

Fig. 1 is a principle diagram of one embodiment of this invention, Fig. 2 is a circuit diagram of Fig. 1, Figs. 3 and 9 are conceptual diagrams showing other embodiments, and Fig. 5 is a conventional overlapping winding method. The principle diagram of the winding, FIG. 6, is the circuit diagram of FIG. B, ,B,...Positive and negative brushes, (1)...Armature winding, (g), (de), (10), (/υ, (/kono,
(/,?)... Equal pressure connection. In each figure, the same reference numerals indicate the same or equivalent parts or functions. Fuku 1 picture 21! XI R' 蛯 12. +3 Floating Dry Garlic Flood Figure 5 Procedural Amendment (Voluntary) 1939, 20/12

Claims (1)

[Claims] In a DC rotating machine having a lapped winding on the armature, one on the equalizing connection connecting the same potential points of the armature winding.
A DC rotating machine characterized by providing brushes only at positions corresponding to the locations, thereby reducing the number of brushes required compared to the number of poles.