CN2031174U

CN2031174U - Dc motor without commutator

Info

Publication number: CN2031174U
Application number: CN 87216880
Authority: CN
Inventors: 陈策
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-12-31
Filing date: 1987-12-31
Publication date: 1989-01-18

Abstract

A DC motor without commutator features that an armature winding is arranged between two permanent magnets (exciting windings) and its like poles. The motor may operate in a motoring mode. The required voltage and current values can be obtained in a large range by changing armature winding parameters and the strength of the stator magnetic field.

Description

The absence of commutator direct current machine

A kind of absence of commutator direct current machine.It belongs to the generating mechanical field.

At present, the greatest weakness of direct current machine is exactly the commutation problem of electric current, consumes non-ferrous metal, the cost height, and operating maintenance is also cumbersome.

The purpose of this utility model is that a kind of novel absence of commutator direct current machine will be provided, and it is simple in structure, and principle is clear, is easy to make.

The utility model is achieved in that places an armature winding between two permanent magnets staggered relatively, armature winding is then to pass stator (permanent magnet) mesopore through the rotor core edge to the rotor shaft of mesopore (axle root) coiling, rotor is fixed in the rotating shaft, and the armature winding two ends are guided on two rings of axle head through rotating shaft (groove).Permanent magnet can pass to direct current excitation with magnet exciting coil and replace, and permanent magnet or magnet exciting coil can not have mesopore.

Concrete structure of the present utility model and operation principle are provided by the following drawings:

Fig. 1 is the utility model structure chart.1 is rotor, and 2 is yoke, and 3 is permanent magnet, and 4 is shell, and 5 is end cap, and 6 is slip ring.

Fig. 2 is the utility model profile.7 is stator core, and 8 is armature winding, and 9 are rotating shaft.

Fig. 3 is the utility model magnetic circuit situation map.Shown in the arrow, be the magnetic line of force by the utmost point of the permanent magnet casing that sets out, return another utmost point of magnet, this has promptly constituted complete magnetic loop.

The placement situation of armature winding lead in magnetic field seen Fig. 4.For magnetic pole N, N ', conductor AB, CD, EF, GH limit are parallel placements, and the magnetic line of force then is vertically to pass them, when rotor during as clockwise direction rotation shown in scheming to go up, according to the generator right-hand rule, we draw, and the direction of induced potential is respectively in the winding:

A－B C－D E－F G－H

Because the two sides of this armature winding is in the constant like pole magnetic field all the time, as long as by certain direction running, the direction of induced electromotive force is just constant all the time in the conductor, can obtain the constant direct current that does not have pulsation phenomenon.

When making application, the element of winding should be multiply, multiturn, sees Fig. 5, and this current/voltage value by needs is determined.

If add certain direct voltage at the armature winding two ends, because of current stressed principle in magnetic field, rotor (armature) is just can rotate.

Claims

1, a kind of absence of commutator direct current machine is characterized in that placing armature winding between the like pole of two permanent magnets, makes it running.

2, by the described commutatorless machine of claim 1, it is characterized in that armature winding through the rotor core edge to mesopore (root) coiling, rotor shaft then passes stator (permanent magnet) mesopore.

3,, it is characterized in that permanent magnet can pass to direct current excitation with magnet exciting coil and replace by the described absence of commutator direct current machine of claim 1.

4, by the described absence of commutator direct current machine of claim 1, it is characterized in that permanent magnet or magnet exciting coil can not have mesopore.