WO2012176963A1

WO2012176963A1 - Electric motor and generator in which a concentric winding is applied

Info

Publication number: WO2012176963A1
Application number: PCT/KR2011/009610
Authority: WO
Inventors: 이성근
Original assignee: Lee Seong Goun
Priority date: 2011-06-24
Filing date: 2011-12-14
Publication date: 2012-12-27
Also published as: KR101090605B1

Abstract

The present invention relates to an electric motor and generator in which a concentric winding is applied. The prevent invention departs from a technique in which a slot and yoke are formed on an iron core of a typical stator to wind a winding around the slot. Thus, a central axis of the winding is concentric to an axis of rotation, and the winding is wound at an angle to provide a simplified structure. Also, a rotor and a concentric winding may extend in the direction of the axis of rotation without enlarging the frames of the electric motor and generator so as to induce a large amount of torque and electromotive force.

Description

Electric motor and generator with concentric winding

The present invention relates to a winding that is a basic structure of an electric motor and a generator, and more particularly, to form a slot and a yoke in the core of the stator and to avoid the technology of winding the winding in the slot, the central axis of the winding to be concentric with the rotation axis And, by winding the winding inclined to simplify the structure, it is possible to induce a large torque and electromotive force simply by extending the rotor and the concentric winding in the direction of the rotation axis without increasing the frame of the motor and generator It relates to an electric motor and a generator to which the concentric windings are applied.

In general, electric motors and generators have been developed to implement various functions for a long time, but there has not been a great change in the mechanical structure constituting the magnetic circuit essential for energy exchange. That is, as shown in Figure 1, in the prior art, the rotor is provided inside the stator having an iron core 40 having a slot 10, while the rotor rotates and the torque or while chaining with the winding wound in the slot of the stator It has taken the structure of inducing electromotive force. Generally. The greater the linkage flux, the greater the torque or electromotive force can be obtained, and the linkage flux increases as the number of windings wound on the iron core 40 increases, and the smaller the resistance of the winding increases.

However, according to the prior art as described above, since the number of turns is limited by the size of the slot formed in the iron core of the stator, it is difficult to increase the linkage flux. In addition, in order to reduce the resistance, the larger the diameter of the winding is advantageous, but due to the limited size of the slot, it is not easy to thicken the winding diameter. It is possible to increase the number of turns by increasing the slots by increasing the frame of the stator's core, but it was limited to achieve the desired linkage flux without making the frame of the stator core considerably large. The coreless type appeared, but was used only for a limited purpose.

The present invention has been created to solve the problems of the prior art as described above, according to the present invention, the high efficiency of the motor torque and generator electromotive force with a simple configuration without forming a slot and yoke formed in the iron core, iron core of the stator An object of the present invention is to provide an electric motor and a generator to which concentric windings are applied to allow abandonment.

The motor applying the concentric winding of the present invention for achieving the above object is made of a rotor that is rotatably installed around a rotating shaft, the concentric winding wound around the outer side of the rotor, the concentric winding is It is wound so as to be inclined at a predetermined angle with respect to the horizontal cross section of the rotor, and formed at least one pole to serve as a stator winding, and the concentric winding enables the increase and decrease of the winding over the axial direction. do.

In addition, the electric motor to which the concentric winding of the present invention is applied is made of a rotor rotatably installed around a rotating shaft, the concentric winding wound inside the rotor and wound around the rotating shaft, and the concentric winding of the rotor It is wound so as to be inclined at a predetermined angle with respect to the horizontal cross section, and formed at least one pole to serve as a stator winding, and the concentric winding is characterized in that the winding can be increased and decreased over the axial direction.

In addition, the concentric winding of the motor to which the concentric winding of the present invention is applied is characterized in that it is wound in the range of 22.5 degrees to 67.5 degrees with respect to the horizontal cross section.

On the other hand, the generator to which the concentric winding of the present invention is applied, the rotor is rotatably installed around the rotation axis, made of a concentric winding wound around the outer of the rotor, the concentric winding is a horizontal cross section of the rotor It is wound to be inclined at a predetermined angle with respect to, and is formed in one or more poles to serve as a stator winding, and the concentric winding is characterized in that it is possible to increase and decrease the winding over the axial direction.

In addition, the generator to which the concentric winding of the present invention is applied, the rotor is rotatably installed around the rotating shaft, and the inner concentric winding of the rotor is located inside the rotating shaft, the concentric winding is made of the rotor It is wound so as to be inclined at a predetermined angle with respect to the horizontal cross-section of the, and formed at least one pole to serve as a stator winding, and the concentric winding is characterized in that the winding can be increased and decreased over the axial direction.

In addition, the concentric winding 400 of the generator to which the concentric winding of the present invention is applied is characterized in that it is wound in the range of 22.5 degrees to 67.5 degrees with respect to the horizontal cross section.

According to the present invention, a desired linkage flux can be obtained by a simple configuration without using a stator core, a slot and a yoke according to the prior art.

In addition, according to the present invention, it is possible to reduce the magnetic resistance by arranging the concentric winding as close as possible to the rotor, through which it is possible to obtain the effect of eliminating the gap existing between the stator winding and the yoke in the stator slot. The effect of improving efficiency can be obtained.

In addition, according to the present invention, it is possible to obtain a large torque and electromotive force only by increasing the number of turns in the direction of the rotation axis, and only to extend the rotor and the concentric winding in the axial direction without increasing the frame of the motor and generator. You can also get the desired torque and electromotive force. Therefore, the present invention can achieve a great effect, especially in a long-axis motor and generator.

1 is a perspective view of a stator iron core with a conventional slot;

Figure 2 (a) is a perspective view of a unipolar concentric winding according to the present invention.

(b) is a front view of a unipolar concentric winding according to the present invention.

Figure 3 (a) is a perspective view of a two-pole concentric winding according to the present invention.

(b) is a front view of a two-pole concentric winding according to the present invention.

Figure 4 (a) is a phase arrangement diagram according to the inclination angle of the concentric winding in the magnetic field.

(b) is a graph of the correlation between the inclination angle of the concentric winding and the linkage flux.

Figure 5 (a) is an exploded view of a unipolar concentric winding according to the present invention.

(b) is an exploded view of a two-pole concentric winding according to the present invention.

(c) is an exploded view of a three-pole concentric winding according to the present invention.

Figure 6 (d) is an exploded view of a four-pole concentric winding according to the present invention.

(e) is an exploded view of a six-pole concentric winding according to the present invention.

(f) is an exploded view of an eight-pole concentric winding according to the present invention.

Fig. 7 (a) is a diagram showing a single pole single phase alternator to which the concentric winding of the present invention is applied;

(b) is a diagram showing electromotive force induced by a single pole single phase alternator to which the concentric winding of the present invention is applied;

Fig. 8 (a) is a diagram showing a sinusoidal curve of electromotive force induced when a unipolar concentric winding according to the present invention is applied to a generator.

(b) is a diagram showing a sinusoidal curve of electromotive force induced when a three-pole concentric winding according to the present invention is applied to a generator.

* Detailed description of the major symbols in the drawings *

10: slot

20: York

30: winding

40: iron core

100: rotation axis

200: rotor

300: fixed barrel

400: concentric winding

θ: Angle of inclination of concentric winding on horizontal cross section

L: concentric winding

ф (ф1 ~ ф5): Flux flux

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

The present invention relates to a winding formed in an electric motor and a generator including a stator, a rotor, and an electrically conducting winding. The winding is inclined in a turning direction while wrapping the rotor 200 with the central axis of the winding on the rotating shaft 100. It is characterized in that, using the principle that the electromagnetic function does not change even if the winding wound in the slot of the stator iron core located on the outside of the rotor 200 with the concentric winding 400 according to the present invention. It features.

2 is a view showing an embodiment of the present invention, showing a state in which the concentric winding 400 according to the present invention is applied to an electric motor and a generator having a single pole structure, and according to the present invention, as in a general electric motor or a generator, 100 and the rotor 200 is located inside, and consists of a concentric winding 400 to serve as a stator with a gap therebetween and a fixing barrel 300 capable of fixing the concentric winding 400. Since the other components are commonly used in the electric motor or the generator of the prior art, the description thereof will be omitted here.

Fixing cylinder 300 according to the present invention is to replace a part or all of the conventional iron core 40, the fixing cylinder 300 is integrated with the concentric winding 400 using a varnish or resin material In order to increase the efficiency by reducing the magnetoresistance by minimizing the distance to the rotor 200 by forming a structure that can be made, or by forming a thin structure so that the concentric winding 400 is wound on the outside. It features.

The form of the stator by an electric motor or a generator to which the concentric winding 400 according to the present invention is applied is different from that of a stator by a conventional electric motor or a generator, and the concentric winding 400 of the present invention is a stator winding. When adopted, various forms of application are practically possible.

As shown in FIG. 2, when the concentric winding 400 is wound integrally with the fixing cylinder 300 located outside the rotor 200 or inclinedly on the outer circumferential surface of the fixing cylinder 300, the concentric winding 400 ) Is made of a non-magnetic material as thin as possible to reduce the magnetic resistance while minimizing the leakage flux (leakage flux), the frame constituting the outer side of the concentric winding 400 is made of a magnetic material By maintaining the function of the conventional iron core, it is desirable to maximize the generation of interlinkage flux.

The rotor 200 to which the concentric winding 400 according to the present invention is applied can be applied regardless of the type of electric motor and generator. That is, it can be applied to induction equipment of squirrel type or winding type, and also to a synchronous device using a permanent magnet. However, when the concentric winding 400 according to the present invention is applied to the permanent magnet rotor 200, it is necessary to pay attention to the number of poles of the rotor corresponding to the number of poles of the concentric winding. For example, in the case of a generator, if the rotor is composed of four-pole permanent magnets, a voltage offset may occur and power generation may not be possible, so the number of poles of the concentric winding 400 and the number of poles of the rotor 200 may be reduced. It is desirable to avoid combinations that are incompatible with each other and generate opposite forces.

Figure 3 shows that the concentric winding 400 according to the present invention is applied to the generator of the two-pole structure, even if configured as a two-pole winding there is no change in the electromagnetic function, the same principle is applied as in FIG. .

Figure 4 is a view showing the state in which the number of the linkage flux changes in accordance with the change of the inclination angle with respect to the horizontal cross-section of the concentric winding 400 according to the present invention, according to the Figure 4, as the inclination angle increases It can be seen that the increase.

When the inclination angle θ is 0 °, in the case of the generator, since there is no linkage flux ф1 passing through the closed loop of the winding L, no electromotive force is induced in the winding L even if there is a change in the magnetic flux. In the case that the rotor is not formed in the circumferential direction of the rotor 200, no torque is generated in the rotor 200.

Referring to FIG. 4 (b), as the inclination angle θ of the concentric winding 400 with respect to the horizontal cross section increases, the chain fluxes ф2 and ф3 passing through the winding L increase rapidly, and the inclination angle θ As the) exceeds 45 °, the increase in the linkage flux (ф4, ф5) decreases.

In the case of a generator, the organic electromotive force is proportional to the amount of change in the linkage flux. Therefore, when the inclination angle θ increases from 0 ° to 45 °, the induced electromotive force increases rapidly, and when the inclination angle θ exceeds 45 °, The increase in electromotive force decreases. In the case of an electric motor, a rotating magnetic field is formed in the circumferential direction of the rotor according to the number of poles of the concentric winding 400, the constant of the applied voltage, and the form of voltage. The inclination angle θ of the concentric winding 400 with respect to the horizontal cross section is As it increases, the linking flux increases, and the rotational torque increases in proportion to the linking flux.

The angle of inclination (θ) of 90 ° corresponds to the angle of a general stator winding 30 corresponding to a case in which a winding is wound in a slot of a stator iron core of a conventional motor and a generator, and the concentric winding 400 according to the present invention is conventional. Unlike the structure surrounding the rotor 200 and wound along the direction of the rotation axis 100 is an angle that is not actually implemented.

As shown in Figure 4, the setting range of the inclination angle (θ) with respect to the horizontal cross-section of the concentric winding 400 according to the present invention to take into account the inclination angle of the concentric winding 400, the linkage flux according to the inclination angle and workability and efficiency At 22.5 ° ~ 67.5 ° it can be seen that it is appropriate.

In the embodiment of FIG. 2 according to the present invention, a single pole motor and a generator are targeted, but the concentric winding 400 according to the present invention may be equally applied to a motor and a generator having two or more poles, and the stator may also be rotated. The same can be applied to an outer rotor type electric motor and a generator located inside the former.

5 and 6 are schematic views showing the winding pattern of the number of poles of the concentric windings 400 according to the present invention as a development view. When the single-pole concentric winding 400 is implemented in the passive small power generator of FIG. A waveform such as (b) or FIG. 8 (a) appears. 5 (b) is a winding pattern that appears when implementing a two-pole concentric winding, the conventional stator winding of the universal motor can be easily replaced by a two-pole concentric winding according to the present invention. Figure 5 (c) is a winding pattern that appears when the three-pole concentric winding is applied, according to the concentric winding of the present invention to replace the conventional stator winding applied to the three-phase three-pole generator, three-phase induction motor, Bieldi motor, etc. Can be.

Figure 6 (d) is a winding pattern that appears when the four-pole concentric winding is applied, according to the concentric winding of the present invention can be applied to replace the main winding and auxiliary winding of the conventional two-pole single-phase induction motor. Figure 6 (e) is a winding pattern that appears when the six-pole concentric winding is applied, it can be applied to replace the conventional winding of the three-phase six-pole generator, the electric motor and the non-EL motor. Figure 6 (f) is a winding pattern that appears when the eight-pole concentric winding is applied, according to the concentric winding of the present invention can be applied to replace the conventional main winding and auxiliary winding of the four-pole single-phase induction motor. In addition to the windings of a wider number of poles of the electric motor and the generator can also be configured by simply replacing the concentric winding 400 according to the present invention.

7 (a) and 7 (b) are diagrams for showing that the permanent magnet of two poles is used as the rotor 200, and the concentric winding 400 according to the present invention replaces the conventional stator winding. 1 shows a single phase single pole alternator without the stator core 40. When the knob attached to the generator is rotated, the rotational speed increased through the connected gear is transmitted to the rotor 200. The change of the linkage flux is shown by the rotation of the rotor 200 composed of a bipolar permanent magnet, and the chain Electromotive force is induced in the concentric winding 400 wound obliquely by the change of the magnetic flux.

Fig. 8A shows the single-phase sine wave voltage generated by the single-phase single-pole alternator of Fig. 7A. Fig. 8 (b) is a waveform shown as a result of winding three poles of concentric windings at intervals of 120 ° phase difference, and shows the state of organic electromotive force as a result of applying the present invention to a three-phase alternator. On the contrary, it is obvious to those skilled in the art that a three-phase motor can be implemented by applying a three-phase AC voltage having a waveform of FIG. 8 (b) to the concentric winding of the three-phase alternator. The technical idea of applying the concentric winding of the present invention can be applied regardless of the number of poles.

Although the preferred embodiment of the present invention has been described above, the scope of the present invention is not limited thereto, and it should be understood that the scope of the present invention extends to the range that is substantially equivalent to the embodiment of the present invention. Various modifications can be made by those skilled in the art without departing from the spirit of the invention.

Concentric winding 400 according to the present invention is simpler than the conventional winding technology, and can simplify the structure of the motor or generator, and also enables the design of a long-axis type motor or generator that was difficult to realize.

Claims

A rotor rotatably installed about a rotation axis,

It is made of a concentric winding wound around the outer side of the rotor,

The concentric winding is wound so as to be inclined at a predetermined angle with respect to the horizontal cross section of the rotor, and formed at least one pole to serve as a stator winding, and the concentric winding can be increased and decreased in the axial direction. An electric motor to which a concentric winding is applied.
A rotor rotatably installed about a rotation axis,

Located inside the rotor and made of a concentric winding wound around the rotation axis,

The concentric winding is wound so as to be inclined at a predetermined angle with respect to the horizontal cross section of the rotor, and formed at least one pole to serve as a stator winding, and the concentric winding can be increased and decreased in the axial direction. An electric motor to which a concentric winding is applied.
The method according to claim 1 or 2,

The concentric winding is an electric motor to which the concentric winding is applied, characterized in that wound in the range of 22.5˚ ~ 67.5˚ with respect to the horizontal cross section.
A rotor rotatably installed about a rotation axis,

It is made of a concentric winding wound around the outer side of the rotor,

The concentric winding is wound so as to be inclined at a predetermined angle with respect to the horizontal cross section of the rotor, and formed at least one pole to serve as a stator winding, and the concentric winding can be increased and decreased in the axial direction. Generator applying concentric winding characterized in that.
A rotor rotatably installed about a rotation axis,

Located inside the rotor and made of a concentric winding wound around the rotation axis,

The concentric winding is wound so as to be inclined at a predetermined angle with respect to the horizontal cross section of the rotor, and formed at least one pole to serve as a stator winding, and the concentric winding can be increased and decreased in the axial direction. Generator applying concentric winding characterized in that.
The method according to claim 4 or 5,

The concentric winding is a generator applying the concentric winding, characterized in that wound in the range of 22.5˚ ~ 67.5˚ with respect to the horizontal cross section.