KR101868580B1 - Hollow type Motor and control device thereof - Google Patents

Hollow type Motor and control device thereof Download PDF

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Publication number
KR101868580B1
KR101868580B1 KR1020170022875A KR20170022875A KR101868580B1 KR 101868580 B1 KR101868580 B1 KR 101868580B1 KR 1020170022875 A KR1020170022875 A KR 1020170022875A KR 20170022875 A KR20170022875 A KR 20170022875A KR 101868580 B1 KR101868580 B1 KR 101868580B1
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KR
South Korea
Prior art keywords
rotor
rotation axis
pair
stator
cores
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KR1020170022875A
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Korean (ko)
Inventor
박시범
Original Assignee
(주)디제이테크
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Priority to KR1020170022875A priority Critical patent/KR101868580B1/en
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Publication of KR101868580B1 publication Critical patent/KR101868580B1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21—Devices for sensing speed or position, or actuated thereby
    • H02K11/215—Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H02K11/33—Drive circuits, e.g. power electronics
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • H02K16/02—Machines with one stator and two or more rotors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
    • H02K29/08—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates, magneto-resistors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

The present invention relates to a hollow-type motor and a control method thereof. In particular, the present invention relates to a hollow-type motor including a pair of rotors having a different number of poles or different radii, and to a control method thereof. In addition, according to the present invention, the hollow-type BLDC motor comprises: a rotor having a rotary body and a pair of rotor cores formed at both ends of the rotary body; and a stator having stator cores facing and corresponding to each of the rotor cores. By including a pair of rotors having a different number of poles or by including a pair of rotors having different radii, the occurrence of a torque may differ. Thus, various combinations are possible, and a torque suitable to be applied can be easily generated.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a hollow motor,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a hollow-type motor and a control apparatus thereof, and more particularly to a hollow-type motor including a pair of rotors having different numbers of poles or different radii from each other and a control apparatus thereof.

A motor is a device that converts electrical energy into mechanical energy using the force that a current-carrying conductor receives in a magnetic field, including a rotor including a rotating shaft and a stator opposite the rotor, The rotor rotates by the electromagnetic force, and the rotational force can be transmitted to the outside through the rotating shaft.

Generally, a motor can be divided into a DC motor and an AC motor.

First, in the case of a direct current motor, the rotor is composed of a rotating shaft for transmitting a rotating force to the outside, a core in which the rotating shaft is pushed in at the center, and a coil wound around the core. Further, the stator is provided on the inner surface of the motor housing so as to be opposed to the core at a predetermined interval, and is made of a permanent magnet.

In such a DC motor, when an electric current is supplied to the coil, the coil and the core are rotated by the electromagnetic force formed between the coil and the permanent magnet to rotate the rotating shaft.

On the other hand, in the case of an alternating-current motor, the rotor is composed of a rotating shaft and permanent magnets coupled to the outer circumferential surface of the rotating shaft with a certain radius. Further, the stator is constituted by a coil provided on the inner surface of the motor housing so as to be opposed to the permanent magnet of the rotor at a predetermined interval.

In this AC motor, unlike a DC motor, when a current is supplied to the coil of the stator, the permanent magnet rotates and rotates the rotating shaft.

As such, motors are roughly classified into DC motors and AC motors according to the types of power sources. Among them, a brushless DC motor is a type of DC motor and is widely used for driving home appliances.

Generally, a brushless DC motor is a motor having a stator having two-phase, three-phase or four-phase armature coils and a permanent magnet rotor, and having no commutator, and is widely used as a motor for variable- .

In particular, the application range has been widely extended from home use to industrial use, such as being used as a servo drive due to recent development of permanent magnet materials.

The BIST motor comprises a stator made up of a stator winding for generating a rotating magnetic field and a stator made of a stator core for smoothly flowing the magnetic flux by forming a path of the magnetic flux, and a rotor made of a rotor iron core and a permanent magnet.

When the rotor system is applied to the stator winding made of a three-phase winding, the magnetic flux of the rotor system and the magnetic flux of the permanent magnet interact with each other, and the rotor rotates in a constant direction to generate torque.

However, it is difficult to obtain suitable torque for various applications because it has only one rotor having a predetermined number of poles and a predetermined radius.

Korean Publication No. 10-2016-0060387 Domestic Publication No. 10-2010-0038903 Korean Publication No. 10-2008-0072825

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a hollow motor including a pair of rotors having different numbers of poles or different radii from each other, and a control device therefor.

According to an aspect of the present invention, there is provided a rotor comprising: a rotating body; a rotor having a pair of rotor cores formed at both ends of the rotating body; And a stator core having a stator core formed so as to oppose to a pair of rotor cores of the rotor, respectively.

Further, the rotating body of one aspect of the present invention is formed into a cylindrical shape.

In addition, the rotating body of one aspect of the present invention is formed into a conical shape with both ends thereof being open.

Further, the number of poles of the permanent magnets formed on each of the pair of rotor cores in one aspect of the present invention is different.

Further, one aspect of the present invention further includes an impeller formed inside the rotating body.

Further, the rotating body and the pair of rotor cores in one aspect of the present invention are integrally formed.

In addition, a plurality of slits are formed in the rotating body of one aspect of the present invention so that air can be introduced from the side.

According to another aspect of the present invention, there is provided a rotor including a pair of rotor cores; A stator core formed so as to face each of a pair of rotor cores of the rotor; And an impeller which rotates together with the rotation of the rotor by connecting the pair of rotor cores.

Further, the number of poles of the permanent magnets formed on each of the pair of rotor cores of the other aspect of the present invention is different.

According to another aspect of the present invention, there is provided a rotor comprising: a rotating body; a rotor having a pair of rotor cores formed at both ends of the rotating body; And a stator having a stator core formed so as to face each of a pair of rotor cores of the rotor, wherein the stator core is installed in each of the pair of rotor cores A pair of Hall sensors; A motor driving unit receiving the output signals of the pair of Hall sensors and controlling the coils of the stator core corresponding to the pair of rotor cores; A switch positioned between the motor driving unit and the coils of the pair of stator cores; And a control unit controlling the switch to electrically connect the motor driving unit to one of the pair of stator cores.

Further, in the pair of stator cores according to another aspect of the present invention, when the number of poles of the first rotor core corresponding to the first stator core is smaller than the number of poles of the second rotor core corresponding to the second stator core, The control unit controls the switch so that the motor driving unit is connected to the coil of the first stator core in order to increase the speed and reduce the torque.

Further, in the pair of stator cores according to another aspect of the present invention, when the number of poles of the first rotor core corresponding to the first stator core is smaller than the number of poles of the second rotor core corresponding to the second stator core, The control unit controls the switch so that the motor driving unit is connected to the coil of the second stator core in order to slow the speed and increase the torque.

According to another aspect of the present invention, there is provided a rotor comprising: a rotating body; a rotor having a rotor core formed at one end of the rotating body; And a stator core having a stator core formed opposite to the rotor core of the rotor.

In another aspect of the present invention, the rotating body is formed in a cylindrical shape.

In another aspect of the present invention, the rotating body is formed into a conical shape with both ends thereof opened.

Still another aspect of the present invention further includes an impeller formed inside the rotating body.

In another aspect of the present invention, the rotating body and the rotor core are integrally formed.

In another aspect of the present invention, a plurality of slits are formed in the rotating body to allow air to flow in from the side.

According to another aspect of the present invention, there is provided a rotor including a rotor core; A stator core formed so as to face the rotor core of the rotor; And an impeller which is connected to the rotor core and rotates together with the rotation of the rotor.

The present invention as described above can make torque generation including a pair of rotors having different numbers of poles different from each other.

In addition, the present invention as described above may include a pair of rotors having different radii, so that torque generation may be different.

Furthermore, the present invention is capable of various combinations of different numbers of poles or different radii, so that it is easy to generate a torque suitable for application.

1 is a structural view of a hollow motor according to a preferred embodiment of the present invention.
Fig. 2 is a view showing the rotor core of the rotor of Fig. 1;
3 is a view showing the stator core of the stator of Fig.
Fig. 4 is a view showing the impeller of Fig. 1;
5 is a structural view of a hollow motor according to another preferred embodiment of the present invention.
6 is a cross-sectional view of the rotating body of FIG.
7 is a structural view of a hollow motor according to another preferred embodiment of the present invention.
8 is a configuration diagram of a control device for a hollow motor according to a preferred embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments will be described in detail below with reference to the accompanying drawings.

The following examples are provided to aid in a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, this is merely an example and the present invention is not limited thereto.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intention or custom of the user, the operator, and the like. Therefore, the definition should be based on the contents throughout this specification. The terms used in the detailed description are intended only to describe embodiments of the invention and should in no way be limiting. Unless specifically stated otherwise, the singular form of a term includes plural forms of meaning. In this description, the expressions "comprising" or "comprising" are intended to indicate certain features, numbers, steps, operations, elements, parts or combinations thereof, Should not be construed to preclude the presence or possibility of other features, numbers, steps, operations, elements, portions or combinations thereof.

It is also to be understood that the terms first, second, etc. may be used to describe various components, but the components are not limited by the terms, and the terms may be used to distinguish one component from another .

FIG. 1 is a structural view of a hollow motor according to a preferred embodiment of the present invention, FIG. 2 is a view showing a rotor core of the rotor of FIG. 1, FIG. 3 is a view of a stator core of the stator of FIG. 1 And Fig. 4 is a view showing the impeller of Fig.

1 to 4, a hollow motor according to a preferred embodiment of the present invention includes a rotor 10, a pair of stators 20, and an impeller 30. Here, the hollow motor is a BLDC motor or a permanent magnet synchronous motor.

The rotor 10 includes a cylindrical rotating body 11 having a hollow shaft. The rotating body 11 may be formed of a non-magnetic material. An impeller 30 is mounted on the inner peripheral surface of the rotating body 11.

The rotor 10 is provided with a pair of rotor cores 12 attached to both ends of the rotating body 11. Here, the rotary body 11 and the pair of rotor cores 12 are described as being separated, but they may be integrally formed.

A pair of rotor cores 12 of the rotor 10 are arranged to be spaced apart from one end of the tooth portion 22 provided at the stator 20 at regular intervals.

The rotor core 12 includes the permanent magnet 13. Rotor core

The rotor core 12 is provided as a hollow ring structure and a plurality of thin plates, for example, ring-shaped iron plates made of, for example, a magnetic material magnetically permeable material, Or the like.

The permanent magnets 13 are equally spaced on one surface of the rotor core 12 facing the teeth 22 of the stator 20 and are arranged in the circumferential direction of the rotor core 12, Are alternately arranged. As a method for mounting the permanent magnet 13 on the rotor core 12, there are a surface permanent magnet (SPM) and an intermagnetic permanent magnet (IPM). In the case of the surface magnet type permanent magnets 13 are attached to the outer peripheral surface of the rotor core 12 and the permanent magnets 13 are embedded in the rotor core 12 in the case of the embedded magnet type. Compared with the surface magnet type, the buried magnet type can prevent the permanent magnet 13 from falling off from the rotor core 12 and actively use the reluctance torque. The first region 12-1 of the rotor core 12 to which the permanent magnet 13 is attached in the direction of the rotation axis Z may be formed of a paramagnetic material to form a flux linkage, The second region 12-2 of the rotor core 12 to which the magnets 13 are not attached may be formed of a nonmagnetic material.

The permanent magnet 13 of the rotor and the tooth portion 22 to which the coil 23 is wound may correspond to each other, but the present invention is not limited thereto.

The pair of stator 20 includes a hollow stator core 21 and a plurality of teeth extending in the direction of the rotation axis Z and disposed along the circumferential direction of the stator core 21. [ (22). The coil 23 is wound on the plurality of tooth portions 22.

The stator core 21 may be in the form of a ring-shaped thin metal plate laminated in the direction of the rotation axis Z. The plurality of tooth portions 22 are formed on one surface of the stator core 21 facing the permanent magnet 13 of the rotor 10 in the direction of the rotation axis Z at regular intervals along the circumferential direction of the stator core 21 As shown in FIG. A plurality of tooth portions 22 are attached in the direction of the rotation axis Z

The first region 21-1 of the stator core 21 may be formed of a paramagnetic material to form a flux linkage and may include a stator core 21 May be formed of a non-magnetic material.

A plurality of recessed slots 25, i.e., coil receiving spaces, for accommodating the coils 23 wound on the tooth 22 are formed between adjacent tooth portions 22. The plurality of slots 25 are arranged to be equidistantly spaced along the circumferential direction of the stator core 21. That is, the tooth portion 22 and the slot 25 are alternately arranged in the circumferential direction.

The coil 23 is formed by winding a wire with an insulating insulator (not shown) interposed between each of the tooth portions 22.

On the other hand, the impeller 30 has the same shape as the blades of the fan,

And is mounted on the main surface. The impeller 30 is rotated together with the rotation of the rotor 10 and the air introduced into the impeller 30 through the rotation of the impeller 30 passes through the rotary body 11.

In the present invention, the impeller (30) is installed inside the rotor (10) without providing a bearing for supporting the rotor (10) by coupling it to the housing, so that noise is generated through a motor having a structure capable of generating a suction force Can be improved.

In the rotor 10 of the present invention, the number of poles of the permanent magnets 13 provided in the pair of rotor cores 12 is different from each other. That is, the number of poles of the rotor core 12 positioned at the front portion and the number of poles of the rotor core 12 positioned at the rear portion are different from each other in FIG.

As described above, since the number of poles of the rotor core 12 positioned at the front portion and the number of poles of the rotor core 12 positioned at the rear portion are different from each other, The rotational force can be obtained by rotating the rotor 12.

FIG. 5 is a structural view of a hollow-type motor according to another preferred embodiment of the present invention, and FIG. 6 is a sectional view of the rotating body of FIG.

5 and 6, a hollow motor according to another preferred embodiment of the present invention includes a rotor 10, a pair of stators 20, and an impeller 30.

The hollow motor according to another preferred embodiment of the present invention is characterized in that the hollow BI motor and the rotating body 11 'of FIG. 1 have a conical shape, not a cylindrical shape.

That is, as shown in FIG. 6, the rotating body 11 'has a shape gradually increasing toward the rear as the radius increases.

When the radius of the rotating body 11 'is increased toward the rear side, the air is compressed as indicated by an arrow, and a stronger room air output can be formed.

5, the number of poles of the rotor core 12 on the front side and the number of poles of the rotor core 12 on the rear side are made different from each other, (12), it is possible to have a larger number of poles.

5, the number of poles of the rotor core 12 on the front side and the number of poles of the rotor core 12 on the rear side are made different from each other. In particular, the rotor core 12, (12), so that the number of poles can be increased and the torque that can be obtained is different from each other, so that one can be driven to obtain various torques.

7 is a structural view of a hollow motor according to another preferred embodiment of the present invention.

Referring to FIG. 7, a hollow motor according to another preferred embodiment of the present invention includes a rotor 10, a pair of stator 20, and an impeller 30.

The hollow motor according to another preferred embodiment of the present invention is different from the hollow motor of FIG. 1 in that a rotating body is not provided, but the front and rear rotor cores 12 are connected by the wings of the impeller 30 .

If the front and rear rotor cores 12 are connected by the wings of the impeller 30 without the rotating body, the air can flow in from the side of the hollow motor to increase the inflow amount of air.

Of course, the same effect can be obtained by providing a rotating body and forming a plurality of slits in the rotating body.

8 is a configuration diagram of a control device for a hollow motor according to a preferred embodiment of the present invention.

Referring to FIG. 8, the hollow motor control apparatus includes a switch 110, a controller 120, a pair of hall sensors 130, and a motor driver 140.

In this configuration, the controller 120 controls the motor driver 140 so that the motor driver 140 is connected to any one of the coil 100-1 of the first stator core and the coil 100-2 of the second stator core. (110).

If the number of poles of the first rotor core corresponding to the first stator core is smaller than the number of poles of the second rotor core corresponding to the second stator core, if it is desired to increase the rotation speed and decrease the torque, The controller 120 controls the switch 110 so that the motor driving unit 140 is connected to the coil 100-1 of the first stator core.

On the contrary, when the number of poles of the first rotor core corresponding to the first stator core is smaller than the number of poles of the second rotor core corresponding to the second stator core, when it is desired to decrease the rotation speed and increase the torque, 120 controls the switch 110 so that the motor driving unit 140 is connected to the coil 100-1 of the second stator core.

The first Hall sensor 130-1 senses the magnetic field of the permanent magnet of the first rotor core to detect the position of the permanent magnet and provides the detected value to the motor driver 140. [

The second hall sensor 130-2 senses the magnetic field of the permanent magnet of the second rotor core to detect the position of the permanent magnet and provides the detected value to the motor driver 140. [

The motor driving unit 140 is electrically connected to the hall sensor 130 and receives the position value of the permanent magnet 13 from the Hall sensor 130. The motor driving unit 140 receives the position value of the permanent magnet 13, The stator coils 100-1 and 100-2 are caused to generate a magnetic force of polarity matching the current flowing direction of the coils 100-1 and 100-2 as the power is supplied to the stator coils 100-1 and 100-2 in a specific direction At this time, a repulsive force is generated between the stator 20 and the rotor 10 due to the magnetic force generated by the stator coils 100-1 and 100-2 and the same magnetic pole of the permanent magnet 13, The rotational force is applied to the rotor 10 in a state of being separated from the rotor 10.

The present invention as described above can make torque generation including a pair of rotors having different numbers of poles different from each other.

In addition, the present invention as described above may include a pair of rotors having different radii, so that torque generation may be different.

Furthermore, the present invention is capable of various combinations of different numbers of poles or different radii, so that it is easy to generate a torque suitable for application.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments of the present invention are not intended to limit the scope of the present invention but to limit the scope of the present invention. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents thereof should be construed as being included in the scope of the present invention.

10: rotator 11, 11 ': rotating body
12: rotor core 12-1: first region
12-2: second region 13: permanent magnet
20: stator 21: stator core
21-1: first region 21-2: second region
22: Tees 23: Coils
25: Slot 30: Impeller
31: Wings

Claims (20)

A rotor having a rotating body and a pair of rotor cores formed at both ends of the rotating body; And
And a stator core having a stator core formed so as to face each of a pair of rotor cores of the rotor,
The stator is formed to be spaced apart from the rotor along a rotation axis,
Each of the pair of rotor cores has a ring-shaped thin plate laminated in the direction of the rotation axis (Z), and a plurality of permanent magnets are arranged on one surface of the stator in the direction of the rotation axis (Z) And the first area to which the plurality of permanent magnets are attached in the direction of the rotation axis Z is formed of a paramagnetic material so as to form the flux linkage and the permanent magnet is attached in the direction of the rotation axis Z The second region is formed of a non-magnetic material,
Each of the pair of stator cores has a ring-shaped thin metal plate stacked in the direction of the rotation axis (Z), and a plurality of teeth portions are formed on one surface of the plurality of permanent magnets of the rotor, And the first region to which the plurality of tooth portions are attached in the direction of the rotation axis Z is formed of a paramagnetic material so as to form a flux linkage, The second region to which the tooth portion is not attached is formed of a non-magnetic material,
Wherein the number of poles of the plurality of permanent magnets formed in each of the pair of rotor cores is different. The method according to claim 1,
Wherein the rotating body is formed in a cylindrical shape. The method according to claim 1,
Wherein the rotating body is formed in a conical shape with both ends thereof opened. delete delete The method according to claim 1,
And an impeller formed inside the rotating body. The method according to claim 1,
Wherein the rotating body and the pair of rotor cores are integrally formed. The method according to claim 1,
And a plurality of slits are formed in the rotating body to allow air to flow in from the side. A rotor having a pair of rotor cores;
A stator core formed so as to face each of a pair of rotor cores of the rotor; And
And an impeller which rotates together with the rotation of the rotor by connecting the pair of rotor cores,
Wherein the pair of stator cores are spaced apart from the rotor along a rotation axis,
Each of the pair of rotor cores has a ring-shaped thin plate laminated in the direction of the rotation axis (Z), and a plurality of permanent magnets are formed on one surface of the stator core facing the plurality of tooth portions in the direction of the rotation axis (Z) And the first region to which the plurality of permanent magnets are attached in the direction of the rotation axis Z is formed of a paramagnetic material so as to form a flux linkage, The second region is formed of a non-magnetic material,
Each of the pair of stator cores has a ring-shaped thin metal plate stacked in the direction of the rotation axis (Z), and the plurality of tooth portions are formed on one surface of the plurality of permanent magnets of the rotor facing each other in the direction of the rotation axis And the first region to which the plurality of tooth portions are attached in the direction of the rotation axis Z is formed of a paramagnetic material to form the flux linkage, The second region where the teeth portion of the first magnetic layer is not provided is formed of a non-magnetic material,
Wherein the number of poles of the plurality of permanent magnets formed in each of the pair of rotor cores is different. delete A rotor having a rotating body and a pair of rotor cores formed at both ends of the rotating body; And a stator having a stator core formed so as to be opposed to a pair of rotor cores of the rotor, the control device comprising:
A pair of Hall sensors mounted on the pair of rotor cores, respectively;
A motor driving unit receiving the output signals of the pair of Hall sensors and controlling the coils of the stator core corresponding to the pair of rotor cores;
A switch positioned between the motor driving unit and the coils of the pair of stator cores; And
And a control unit controlling the switch to electrically connect the motor driving unit and the pair of stator cores.
The stator is formed to be spaced apart from the rotor along a rotation axis,
Each of the pair of rotor cores has a ring-shaped thin plate laminated in the direction of the rotation axis (Z), and a plurality of permanent magnets are arranged on one surface of the stator in the direction of the rotation axis (Z) And the first area to which the plurality of permanent magnets are attached in the direction of the rotation axis Z is formed of a paramagnetic material so as to form the flux linkage and the permanent magnet is attached in the direction of the rotation axis Z The second region is formed of a non-magnetic material,
Each of the pair of stator cores has a ring-shaped thin metal plate stacked in the direction of the rotation axis (Z), and the plurality of tooth portions are formed on one surface of the plurality of permanent magnets of the rotor facing each other in the direction of the rotation axis And the first region to which the plurality of tooth portions are attached in the direction of the rotation axis Z is formed of a paramagnetic material to form the flux linkage, The second region where the teeth portion of the first magnetic layer is not provided is formed of a non-magnetic material,
Wherein the number of poles of the plurality of permanent magnets formed in each of the pair of rotor cores is different. delete delete A rotor having a rotating body and a rotor core formed at one end of the rotating body; And
And a stator core having a stator core formed so as to face the rotor core of the rotor,
The stator is formed to be spaced apart from the rotor along a rotation axis,
The rotor core has a ring-shaped thin plate laminated in the direction of the rotation axis (Z), and a plurality of permanent magnets are formed on one surface of the plurality of teeth of the stator facing the rotation axis (Z) And a second region in which the plurality of permanent magnets are attached in the direction of the rotation axis Z is formed of a paramagnetic material so as to form a flux linkage, Is formed of a non-magnetic material,
The stator core has a ring-shaped thin metal plate stacked in the direction of the rotation axis (Z), and the plurality of tooth portions are formed on one surface of the rotor facing the plurality of permanent magnets in the direction of the rotation axis (Z) along the circumferential direction And the first region to which the plurality of tooth portions are attached in the direction of the rotation axis Z is formed of a paramagnetic material so as to form the flux linkage and the plurality of tooth portions are attached in the direction of the rotation axis Z Wherein the second region is formed of a non-magnetic material. The method of claim 14,
Wherein the rotating body is formed in a cylindrical shape. The method of claim 14,
Wherein the rotating body is formed in a conical shape with both ends thereof opened. The method of claim 14,
And an impeller formed inside the rotating body. The method of claim 14,
Wherein the rotating body and the rotor core are integrally formed. The method of claim 14,
And a plurality of slits are formed in the rotating body to allow air to flow in from the side. A rotor having a rotor core;
A stator core formed so as to face the rotor core of the rotor; And
And an impeller which is connected to the rotor core and rotates together with the rotation of the rotor,
The stator core is formed to be spaced apart from the rotor along a rotation axis,
The rotor core is formed by laminating a ring-shaped thin plate in the direction of the rotation axis (Z), and a plurality of permanent magnets are formed on one surface of the stator core facing the plurality of tooth portions in the direction of the rotation axis And the first region in which the plurality of permanent magnets are attached in the direction of the rotation axis Z is formed of a paramagnetic material to form a flux linkage and the second region in which the permanent magnets are not attached in the direction of the rotation axis Z The region is formed of a non-magnetic material,
The stator core has a ring-shaped thin metal plate stacked in the direction of the rotation axis (Z), and the plurality of tooth portions are formed on one surface of the rotor facing the plurality of permanent magnets in the direction of the rotation axis (Z) along the circumferential direction And the first region to which the plurality of tooth portions are attached in the direction of the rotation axis Z is formed of a paramagnetic material so as to form the flux linkage and the plurality of tooth portions are attached in the direction of the rotation axis Z Wherein the second region is formed of a non-magnetic material.
KR1020170022875A 2017-02-21 2017-02-21 Hollow type Motor and control device thereof KR101868580B1 (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005168207A (en) * 2003-12-03 2005-06-23 Nissan Motor Co Ltd Rotary electric machine
JP2005210808A (en) * 2004-01-21 2005-08-04 Mayekawa Mfg Co Ltd Permanent magnet embedded type synchronous machine
KR20080072825A (en) 2005-10-13 2008-08-07 스웨이 에이에스 Direct-drive generator/motor for a windmill/hydropower plant/vessel where the generator/motor is configured as a hollow profile and a method to assemble such a windmill/hydropower plant
KR20100038903A (en) 2008-10-07 2010-04-15 엘지이노텍 주식회사 Hollow type linear stepping motor
KR20120090407A (en) * 2011-02-07 2012-08-17 엘지전자 주식회사 Electric motor
KR20140142835A (en) * 2013-06-05 2014-12-15 김동효 Motor for vacuum-cleaner
KR20160060387A (en) 2014-11-20 2016-05-30 삼성전자주식회사 Hollow brushless motor structure

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005168207A (en) * 2003-12-03 2005-06-23 Nissan Motor Co Ltd Rotary electric machine
JP2005210808A (en) * 2004-01-21 2005-08-04 Mayekawa Mfg Co Ltd Permanent magnet embedded type synchronous machine
KR20080072825A (en) 2005-10-13 2008-08-07 스웨이 에이에스 Direct-drive generator/motor for a windmill/hydropower plant/vessel where the generator/motor is configured as a hollow profile and a method to assemble such a windmill/hydropower plant
KR20100038903A (en) 2008-10-07 2010-04-15 엘지이노텍 주식회사 Hollow type linear stepping motor
KR20120090407A (en) * 2011-02-07 2012-08-17 엘지전자 주식회사 Electric motor
KR20140142835A (en) * 2013-06-05 2014-12-15 김동효 Motor for vacuum-cleaner
KR20160060387A (en) 2014-11-20 2016-05-30 삼성전자주식회사 Hollow brushless motor structure

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