CN2293153Y

CN2293153Y - Double ring magnetic pole parallel winding rare-earth permanent-magnet DC electric machine

Info

Publication number: CN2293153Y
Application number: CN 97223506
Authority: CN
Inventors: 夏成明
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-06-09
Filing date: 1997-06-09
Publication date: 1998-09-30
Anticipated expiration: 2007-06-09

Abstract

The utility model relates to a rare earth permanent magnetic DC motor with two ring poles and windings connected in parellel, particularly a permanent magnetic DC motor with a hollow cup armature. The utility model is composed of an armature (1), an outer ring pole (2), an inner ring pole (3), a stator casing (4), a rotary shaft (5), an electric brush (6), a commutator (7), etc. The utility model is characterized in that the two inner walls of the stator casing are provided with the outer ring pole and the inner ring pole; an armature winding is connected with the rotary shaft and the commutator and is arranged between the outer ring pole and the inner ring pole; the armature winding is in a multipole and multipe group shunt connection and surrounding structure.

Description

Dicyclo magnetic pole winding rare earth permanent magnetic dc motor in parallel

The utility model relates to a kind of rareearth permanent-magnet DC motor and generator, more specifically relates to a kind of coiling armature permanent magnet DC motor.

Though existing coiling armature motor is not because its armature has iron core, the motor iron loss is zero, moment of inertia is low, efficient also improves a lot than the iron core armature, but because the rotor magnetic gap magnetic field of this motor is to form by external or built-in permanent-magnet pieces and internal or external yoke relative motion, so magnetic field intensity often is subjected to the influence of magnetic gap and permanent magnet volume and corresponding material.Consequent magnetic field intensity is low, and the magnetic field utilance is low, and problems such as intensification height can not satisfy the needs of development heavy-duty motor, and environment for use is also restricted.

In addition, also since the winding construction of armature be bipolar around, during the end face of the lead that makes winding, should avoid the diameter of axle of motor, again across end face distance along the lengthwise of armature cylinder to cylinder, other end along the lengthwise of cylinder to cylinder again, cause the transition length of lead to account for more than 70% of effective length and so forth, and the copper loss of motor is increased, copper loss increases, body increases the weight of, and has restricted the breakthrough and the development of power of motor capacity and effect.

The purpose of this utility model just is to provide a kind of dicyclo magnetic pole winding rare earth permanent magnetic dc motor in parallel, to strengthen motor-field intensity, improves the magnetic field utilance, reduces motor weight.

Compare with existing coiling armature motor, the utlity model has following characteristics:

The volume and weight spy of motor is little, is the 1/3-1/2 of general coiling armature motor.

More powerful, can realize that the efficient of tens kilowatt motors reaches more than 82%.In addition, temperature rise is low, speed-regulating range width, and obvious energy conservation, adaptability is strong.

The purpose of this utility model is achieved in that

A kind of dicyclo magnetic pole winding rare earth permanent magnetic dc motor in parallel is by armature (1), outer shroud magnetic pole (2), interior ring magnetic pole (3), stator casing (4), rotating shaft (5), brush (6), commutator compositions such as (7) is characterized in that being provided with outer shroud magnetic pole and interior ring magnetic pole on two inwalls of stator casing, armature winding and rotating shaft, commutator connects, and places between outer shroud magnetic pole and the interior ring magnetic pole, and armature winding is that multipole many groups are in parallel around structure.

Multipole many groups in parallel around be the winding conducting wire of armature along the lengthwise of armature cylinder (also claiming drag cup) to the cylinder periphery, at the periphery ring number of windings other end periphery along the lengthwise of cylinder to cylinder more at interval, the ring number of windings is repeated at interval.

The shell of motor can be cylindrical, also can be square position shape.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is the structural representation of the utility model cylindrical electrical machine.

Fig. 2 is the section of structure of the utility model cylindrical electrical machine.

Fig. 3 is the schematic diagram of multipole many groups winding in parallel.

Fig. 4 is the structural representation of the utility model square position shape motor.

1--armature among the figure, ring magnetic pole in the 2--outer shroud magnetic pole, 3--, the 4--stator casing, the 5--rotating shaft, the 6--brush, 7--commutator, 8--are extremely wide

When shell of the present utility model is cylindrical, its stator casing by two with one heart but the hollow cylinder of different-diameter form, dense arrangement many watts of shape permanent magnets on two walls between two cylinders, forms a dicyclo magnetic pole, and the length and the armature of dicyclo magnetic pole are isometric.Armature winding and rotating shaft, commutator connects, and places between the internal and external double-circular magnetic pole.This just makes the optional position of armature conductor in rotary course all be under the magnetic field orthotropic effect, and the optional position of each winding in rotation all has continuous current to pass through under constant magnetic field intensity.

When shell of the present utility model is square position shape, though its stator casing and cylindrical different, but its inner basic structure is identical, all be on two inwalls of stator casing, many permanent magnets to be set, form a dicyclo magnetic pole, armature winding and rotating shaft, commutator connects, and places between the inner and outer ring magnetic pole.

Above-mentioned dicyclo field structure is owing to form multipole magnetic field along peritrochanteric, and magnetic circuit is short, and leakage field is few, therefore both improved the magnetic field utilance of motor, and kept the motor revolving force apart from continous-stable again, velocity perturbation is little, start characteristics such as inertia is low, and realized automatic startup.

Multipole many groups winding armature in parallel is armature winding to be changed into multipole by past bipolar, and the number of poles number is 1/2 of a stator magnet number of poles, whenever contains some groups again in extremely, but must have at least three groups above or more.The lead of winding is owing to be that lengthwise along the armature cylinder is to cylinder one end periphery, at the periphery ring number of windings other end periphery along the lengthwise of cylinder to cylinder more at interval, in the periphery ring number of windings at interval, avoided the transition length of lead across end face diameter, thereby reduced copper loss, reduce copper loss, alleviated motor weight.In addition, because current in wire only is winding group number/one of total current, just make that also the electric current of motor can improve more than the several times under the same wire condition.

Consumption copper is few, copper loss is little owing to possessing for the utility model, and iron loss is zero, and no eddy current loss and magnetic hysteresis are decreased Lose, the characteristics such as it is low generate heat suit to manufacture rare earth permanent magnetic dc motor and the generator of watt level.

Claims

1, a kind of dicyclo magnetic pole winding rare earth permanent magnetic dc motor in parallel is by armature (1), outer shroud magnetic pole (2), interior ring magnetic pole (3), stator casing (4), rotating shaft (5), brush (6), commutator compositions such as (7) is characterized in that being provided with outer shroud magnetic pole and interior ring magnetic pole on two inwalls of stator casing, armature winding and rotating shaft, commutator connects, and places between outer shroud magnetic pole and the interior ring magnetic pole, and armature winding is that multipole many groups are in parallel around structure.

2, it is characterized in that according to the winding rare earth permanent magnetic dc motor in parallel of the dicyclo magnetic pole described in the claim 1 winding conducting wire of multipole many groups winding in parallel is that lengthwise along the armature cylinder is to the cylinder periphery, at the periphery ring number of windings another periphery along the lengthwise of cylinder to cylinder more at interval, the ring number of windings is repeated at interval.

3, it is characterized in that according to the winding rare earth permanent magnetic dc motor in parallel of the dicyclo magnetic pole described in claim 1 or 2 shell of motor can be cylindrical, also can be square position shape.