CN2164143Y - Electric machine without electric brush and reverser - Google Patents

Abstract

The utility model relates to an electric machine without an electric brush and a reverser, which is provided with armature windings on a plurality of partial stator iron cores respectively in a machine base; a rotor is provided with a plurality of pairs of annular magnetic poles, and an excitation winding is sheathed on a rotor yoke between each pair of the magnetic poles and is fixed onto the machine base. When the electric machine without an electric brush and a reverser operates, the armature windings can sense DC (AC) electromotive forces. The electric machine without an electric brush and a reverser can serve as an AC and DC general-purpose electric machine. Since the cancellation of the reverser and the electric brush, the utility model which can be widely applied on the aspects of power generation, manufacturing machinery, electric driving, etc. has the advantages of high speed, large capacity, and high voltage.

Description

Electric machine without electric brush and reverser

The utility model belongs to technical field of motors.

Existing direct current machine and AC commutator machine owing to have commutator and brush, make it the structure more complicated that seems, functional reliability is relatively poor, needs often maintenance, thereby makes capacity, rotating speed and the voltage of this motor all be subjected to certain restriction.

The purpose of this utility model is a kind of brushless commutatorless machine of design, and it not only keeps the characteristics of original motor, and makes it relatively simple for structure, and is reliable, need not often keep in repair, and can realize big capacity, high rotating speed, Towards Higher Voltage.

The purpose of this utility model is achieved in that as shown in Figure 1, in support, the stator core of axially-aligned fractional part, be fixed with torus shape armature winding on every partial stator iron core, the axially-aligned number is to annular rotor magnetic pole on the rotor yoke, be with the circular excitation winding on the rotor yoke between the every pair of magnetic pole, excitation winding is fixed on the support.When excitation winding is connected DC power supply, rotor yoke in the motor, rotor magnetic pole, air gap, stator core and support constitute magnetic loop, shown in Fig. 1 dotted line, make and produce radially unidirectional magnetic field in the air gap, when prime mover drags the rotor rotation, armature loop cutting magnetic field in air gap in the stator core on the circle, induce the constant electromotive force of polarity at the element two ends, constitute the loop with the element of winding on the stator core cylindrical, just at armature winding two ends output dc voltage, reach the purpose of cancellation commutator, because excitation winding and armature winding all are fixed on the stator, its lead-in wire can directly be connected with external circuit, reaches the purpose of cancellation brush.

Motor is reversible, AC/DC universal.When excitation winding and armature winding fed direct current simultaneously, armature winding and rotor magnetic pole interacted by air-gap field, made rotor output electromagnetic torque drive load and rotated.When excitation winding feeds alternating current, alternating magnetic field is just arranged in the motor magnetic circuit, when prime mover dragged the rotor rotation, the alternating magnetic field in the armature winding cutting air gap induced alternating electromotive force.When excitation winding and armature winding feed alternating current simultaneously, alternating magnetic field in the air gap is along with the change of armature winding electric current changes direction simultaneously, make rotor produce the constant electromagnetic torque of direction, motor is rotated continuously, when armature winding is the helical tubular coil.Coil plane is vertical with rotor, makes rotor produce axial magnetic moment, drives the load axial motion, has reached the purpose of cancellation commutator and brush.

Owing to adopt such scheme, not only kept the characteristics of original motor, reduced the interference of spark simultaneously again, enlarged capacity, improved the restriction of rotating speed and voltage.Can be designed to rotary-type or linear pattern AC/DC motor or DC and AC universal electric machine, also can be designed to alternating current-direct current transformation machine.Only cancelled commutator and brush, made it simple in structure, need not often keep in repair, it is more reliable to work.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the sectional structural map of first embodiment brushless absence of commutator rotary-type motor.

Among the figure, stationary part: 1. support 2.3. stator core 4.5. armature winding 9. excitation winding 10. winding support rotor portions: 6.7. rotor magnetic pole 8. rotor yokes.Parts such as 11. end caps, rotating shaft, bearing are arranged in addition.

Fig. 2 is the sectional structural map of second embodiment brushless absence of commutator linear type motor.

Among the figure: stationary part: 1. support rotor portion: 2. rotor core 3. armature winding 4. excitation winding 5. rotor yokes.

Fig. 3 is the sectional structural map of the 3rd embodiment brushless absence of commutator linear generator.

Among the figure, stationary part: 1. support 2. stator cores 3. armature winding 4. excitation winding rotor portions: 5. rotor.6. end caps are arranged in addition.

Fig. 4 is the cutaway view of the 4th embodiment brushless absence of commutator annular generator.

Fig. 5 is that the 5th embodiment absence of commutator annular is straight--hand over the stationary part cutaway view of inversion machine.

Among Fig. 4,5, stationary part: 1. support 6. stator cores 7. stator winding rotor portions: 2. rotor core 3. armature winding 4. excitation winding 5. rotor yokes.

In the embodiment shown in fig. 1, support (1) is the part as the motor magnetic circuit, and available electrical sheet is made tubular.Stator core (2,3) repeatedly is pressed into tubular by silicon steel sheet and is fixed in the support (1), and dashing equably on the inside and outside circle unshakable in one's determination has the identical groove of many shapes.Armature winding (4,5) is according in the mode of the torus shape winding groove on stator core (2, the 3) inside and outside circle, and each element of winding resembles a power supply.Rotor magnetic pole (6,7) and rotor yoke (8) can adopt electrical sheet to make overall structure.Rotor magnetic pole (6,7) is an annular.Excitation winding (9) is enclosed within on the rotor yoke (8) between every pair of magnetic pole, does not contact with rotor, and in order to prevent leakage field, the support made from nonmagnetic substance (10) is fixed on the support (1).End cap (11) is contained in support (1) two ends, in order to prevent leakage field, makes with nonmagnetic substance, or at the contact-making surface pad non magnetic pad of support (1) with end cap (11).

In embodiment illustrated in fig. 2, support (1) is a kind of tubular parallel with rotor axis or the cylindrical body that opening is axially arranged, it is the part of motor magnetic circuit, use as the magnetic pole yoke again, fractional part rotor core (2) is arranged on the rotor yoke (5), there is several ring slot on surface unshakable in one's determination, be fixed with the tubular armature winding of helical (3) in the groove, armature winding coil plane is vertical with rotor axis, and excitation winding (4) is fixed on the rotor yoke (5) between every two parts rotor core (2).

In the embodiment shown in fig. 3, fractional part stator core (2) inner surface that is fixed on the tubular support (1) has several ring slot, is fixed with the tubular armature winding of helical (3) in the groove, winding coil plane and rotor (5) axis normal.Rotor (5) is a straight cylinder, can endwisely slip, promptly as magnetic pole again as yoke, excitation winding (4) is clipped between two stator cores (2), is enclosed within on the rotor (5), does not contact with rotor (5), is fixed on the support (1).End cap (6) is contained in support (1) two ends, for preventing leakage field, makes with nonmagnetic substance.

In the embodiment shown in fig. 4, it is a brushless absence of commutator annular generator of forming by two pairs of magnetic poles, the structure of it and brushless absence of commutator linear type motor shown in Figure 2 is basic identical, and it just becomes annular to stator and rotor, even rectilinear motion becomes circular motion.Support (1) is the tubular ring bodies that cylindrical body or interior circle have opening, uses as the magnetic pole yoke.The ring-shaped rotor iron core has the array ring slot on (2), is wound with the tubular armature winding of helical (3) in the groove.Excitation winding (4) is fixed on the ring-shaped rotor yoke (5) between per two rotor cores, so that forms several to magnetic pole.In order to cancel brush, can make stator is rotor, and rotor is a fixed body, and motor down-lead can be drawn from axle.

In Fig. 4,5 illustrated embodiments, stator core (6) and the cydariform stator winding (9) loaded onto on the support among Fig. 4 (1) as shown in Figure 5, it is straight just to become the absence of commutator annular--hand over the inversion machine, the interior circular shaft of stator core among Fig. 5 (6) is to having groove, be fixed with cydariform AC stator winding (9) in the groove,, stator rotated when excitation winding (4) and armature winding (3) when feeding direct current simultaneously, stator winding cutting alternating magnetic field just induces AC electromotive force.

Five kinds of motors described in the above embodiment, all has the alterating and direct current universal performance, its armature winding can be connected into series, parallel or the connection in series-parallel mixed winding directly is connected with external circuit, and exciting method can adopt that it is encouraged, self-excitation or series excitation, and available permanent magnet replaces the formed magnetic pole of excitation winding.

Claims (6)

1, a kind of brushless commutatorless machine, it mainly is made up of stator, rotor two parts, it is characterized in that: axially-aligned fractional part stator core in the support, be fixed with torus shape armature winding on every partial stator iron core, on the rotor yoke, the axially-aligned number is to annular rotor magnetic pole, is with the circular excitation winding on the rotor yoke between the every pair of magnetic pole, and excitation winding is fixed on the support.

2, motor according to claim 1, it is characterized in that: stator is straight cylindrical body or the cylindrical body that opening is axially arranged, axially-aligned has the fractional part rotor core on the rotor yoke, be fixed with the tubular armature winding of helical in every part rotor core, on the rotor yoke between every two parts rotor core, be wound with excitation winding.

3, motor according to claim 1 is characterized in that: be fixed with the tubular armature winding of helical in the stator core, rotor is a straight cylinder.

4, motor according to claim 2 is characterized in that: stator is the tubular ring bodies that cylindrical body or circumference have opening, and rotor is an annular solid.

5, motor according to claim 4 is characterized in that: the support internal fixation has stator core, is fixed with stator winding in the stator core.

6,, it is characterized in that adopting permanent magnet to replace the formed magnetic pole of excitation winding according to claim 1,2,3,4,5 described motors.

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