WO2022260461A1 - Moteur à haut rendement - Google Patents

Moteur à haut rendement Download PDF

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Publication number
WO2022260461A1
WO2022260461A1 PCT/KR2022/008174 KR2022008174W WO2022260461A1 WO 2022260461 A1 WO2022260461 A1 WO 2022260461A1 KR 2022008174 W KR2022008174 W KR 2022008174W WO 2022260461 A1 WO2022260461 A1 WO 2022260461A1
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WO
WIPO (PCT)
Prior art keywords
magnet
magnets
magnetic flux
motor
insertion slots
Prior art date
Application number
PCT/KR2022/008174
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English (en)
Korean (ko)
Inventor
이승권
Original Assignee
이승권
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 이승권 filed Critical 이승권
Publication of WO2022260461A1 publication Critical patent/WO2022260461A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/17—Stator cores with permanent magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
    • H02K1/246—Variable reluctance rotors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
    • H02K23/02—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting
    • H02K23/04—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting having permanent magnet excitation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information

Definitions

  • the present invention relates to a high-efficiency electric motor, and more specifically, it is possible to efficiently manage a lot of magnets so that the characteristics of the motor can be stabilized through effective magnetic flux control, and factors that destabilize the characteristics of the motor It is possible to easily adjust the characteristics of magnets and changes in residual magnetic flux density (Br), which may vary depending on the lot, and can predict and manage a constant effective magnetic flux, so the efficiency of the motor can be greatly increased than before. It relates to a high-efficiency electric motor that can increase the convenience of manufacturing as well as being present.
  • Total flux refers to the total sum of the magnetic lines of force that pass through the coil wound in the corresponding slot of the armature and return to the opposite pole among many magnetic lines of force from one pole of the magnet.
  • 1 a method of increasing the thickness of the magnet
  • 2 a method of changing the material of the magnet to a material with a higher residual magnetic flux density (Br) than the current material
  • 3 a method of increasing the length and width of the magnet I have used the method to do it.
  • 1 is a typical structural diagram of an electric motor.
  • stator a fixed part
  • rotor a rotating part
  • field 10 is a stator
  • armature 20 is a rotor
  • armature 20 As the main parts of the motor, there are a field 10, an armature 20, a commutator 30, a brush 40, and the like, as shown by reference numerals in FIG.
  • the field 10 is also referred to as a field magnet and is responsible for generating a main magnetic flux.
  • the field 10 interacts with the armature 20 to form a magnetic circuit, and the armature 20 receives the magnetic flux created by the field 10 to obtain rotational force.
  • the field 10 since the field 10 only needs to generate the necessary magnetic flux, relatively less current flows than the armature 20, and a magnet or an electromagnet is used to generate the magnetic flux. 1 is an example using a magnet.
  • the armature 20 is also called an armature and generates torque through Fleming's left-hand rule by cutting off the magnetic flux created by the field 10.
  • the commutator 30 is also referred to as a commutator, and supplies power to the rotating part by converting direct current coming from the outside into alternating current.
  • the AC current thus changed is supplied to the armature 20 . Since the commutator 30 is connected to the armature 20, when the armature 20 rotates, it also rotates.
  • the rotating commutator 30 contacts the brush 40 in a stationary state.
  • the brush 40 is a part that contacts the commutator 30 and connects the internal circuit and the external circuit of the motor.
  • Types of the brush 40 include a carbon brush, a graphite brush, an electric graphite brush, a metal graphite brush, and the like.
  • the amount of magnetic flux formed in the motor as shown in FIG. 1 means the sum of the amount of effective magnetic flux and the amount of leakage flux. It can perform the role of the field 10 by the amount of effective magnetic flux.
  • the effective magnetic flux refers to the total sum of the magnetic lines of force that pass through the coil wound around the corresponding slot of the armature 20 and return to the opposite pole among many magnetic lines of force from one pole of the magnet.
  • the design in order to maximize the design efficiency of the motor, basically, when designing the motor, the design should be made in consideration of the leakage prevention as well as the precise calculation of the effective magnetic flux.
  • An object of the present invention is to efficiently manage a lot of magnets so that the characteristics of a motor are stable through effective magnetic flux control, and to prevent deviations depending on the lot, which is a factor that destabilizes the characteristics of a motor.
  • Changes in magnet characteristics and residual magnetic flux density (Br) that can occur can be easily controlled, and a constant amount of effective magnetic flux can be predicted and managed, so the efficiency of the motor can be improved significantly compared to the prior art, as well as the convenience of manufacturing can be improved. It is to provide a high-efficiency electric motor.
  • the above object is, at least one magnet support module disposed on the outside of the armature in the radial direction and having a plurality of magnet insertion slots; And a magnet inserted into and coupled to the magnet insertion slots of the magnet support module in a sliding manner, wherein the magnets are a plurality of individual magnets that are individually slidably inserted into and coupled to the magnet insertion slots by a high-efficiency motor. is achieved
  • Inclined surfaces are formed on both sides of the magnets, and inclined wall portions for supporting magnets may be formed in the magnet insertion slots to support the magnets while corresponding to the inclined surfaces formed on the magnets.
  • the magnet has a rod-shaped arc shape, and the magnet may be selected from ferrite magnets, Sm-Co magnets, Nd-Fe-B magnets, Sm2Fe17Nx magnets, and the like.
  • the magnet insertion slot is formed in a structure capable of clustering the magnets and preventing them from being separated, and the magnet support module may be manufactured in a bipolar or multipole type.
  • the above object at least one magnet support module doedoe disposed outside the armature in the radial direction having a plurality of magnet insertion slots; and a plurality of rod-shaped magnet parts which are individually inserted into and coupled to the magnet insertion slots of the magnet support module in a sliding manner.
  • a high-efficiency electric motor characterized in that the integral magnet including a magnet connecting portion integrally connecting the plurality of rod-shaped magnet portions.
  • Inclined surfaces are formed on both sides of the bar-type magnet parts, and inclined wall parts for supporting magnets may be formed in the magnet insertion slots to support the bar-type magnet parts while corresponding to the inclined surfaces formed on the bar-type magnet parts. have.
  • An end portion of the magnet insertion slot may further form a connection portion arranging portion in which a magnetic connection portion of the magnet is disposed.
  • the magnet is selected from ferrite magnets, Sm-Co magnets, Nd-Fe-B magnets, Sm2Fe17Nx magnets, etc., and the magnet insertion slot is formed with a structure capable of clustering the magnets and preventing them from being separated,
  • the magnet support module may be manufactured in a bipolar or multipole type.
  • the present invention it is possible to efficiently manage a lot of magnets so that the characteristics of the motor are stable through effective magnetic flux control, and deviations may occur depending on the lot, which is a factor that destabilizes the characteristics of the motor. It is possible to easily adjust the characteristics of the magnet and the change in the residual magnetic flux density (Br), and to predict and manage a certain amount of effective magnetic flux. It works.
  • 1 is a typical structural diagram of an electric motor.
  • FIG. 2 is a structural diagram of a high-efficiency motor according to a first embodiment of the present invention.
  • FIG. 3 is an exploded view of the magnet support module and the magnet shown in FIG. 2;
  • FIG. 4 is an enlarged structural diagram of a magnet support module.
  • FIG. 5 is a front view of a magnet.
  • 6 is data obtained by dividing the inner surface of a magnet into parts and measuring surface magnetic flux using a gauss meter.
  • FIG. 7 shows the measurement of the surface magnetic flux at nine points (a, b, c, d, e, f, g, h, i) of the N pole and the S pole, respectively, using two magnets as samples.
  • FIG. 9 is a structural diagram of a high efficiency motor according to a second embodiment of the present invention.
  • FIG. 10 is an exploded view of the magnet support module and the magnet shown in FIG. 9 .
  • FIG. 11 is an enlarged structural diagram of a magnet support module.
  • FIG. 12 is a front view of a magnet.
  • Figure 2 is a structural diagram of a high-efficiency motor according to a first embodiment of the present invention
  • Figure 3 is an exploded view of the magnet support module and the magnet shown in Figure 2
  • Figure 4 is an enlarged structure diagram of the magnet support module
  • Figure 5 is a magnet Front view
  • Figure 6 is the data of measuring the surface magnetic flux by dividing the inner surface of the magnet by part and using a gauss meter.
  • Figure 8 is a B-H curve and measurement area for calculating the permeance coefficient.
  • the high-efficiency motor it is possible to efficiently manage a lot of magnets so that the characteristics of the motor are stable through effective magnetic flux control, and the factor that makes the characteristics of the motor unstable It is possible to easily adjust the characteristics of magnets and changes in residual magnetic flux density (Br), which may vary depending on the lot, and can predict and manage a constant effective magnetic flux, so the efficiency of the motor can be greatly increased than before. In addition, it can increase the convenience of manufacturing.
  • Pr residual magnetic flux density
  • the high-efficiency motor according to the present embodiment capable of providing such an effect includes a magnet support module 140 disposed outside the armature 111 in the radial direction and having a plurality of magnet insertion slots 141, and a magnet support module 140 It includes a magnet 130, that is, a permanent magnet 130 coupled to be inserted into the magnet insertion slots 141 of ).
  • the magnet 130 forms a rod-shaped arc (arc) shape.
  • the magnet support module 140 to which these magnets 130 are coupled also has an annular shape corresponding to the magnet 130, that is, an arc shape.
  • the magnet insertion slot 141 formed in the magnet support module 140 supports the magnet 130 but has a structure capable of inserting the magnet 130 in a slot form.
  • the magnet support module 140 performs a function capable of predictive management by measuring the effective magnetic flux.
  • FIG. 2 the structure and description of the armature 111, the commutator 113, and the brush 115 are replaced with the description of FIG. 1, although the symbols are different.
  • the magnet 130 applied to the high-efficiency motor according to the present embodiment may be manufactured in a rod-shaped arc shape and inserted into the magnet insertion slots 141 formed in the magnet support module 140. It can be coupled to the magnet support module 140 in the form of being.
  • the permeance coefficient of the edge portion is high and the central portion may be manufactured in a structure in which the permeance coefficient is relatively low. In this case, the effective magnetic flux can be secured .
  • the magnet 130 which is a permanent magnet applied to this embodiment, may be selected from ferrite magnets, Sm-Co magnets, Nd-Fe-B magnets, and Sm2Fe17Nx magnets.
  • Nd-Fe- The magnet 130 can be manufactured using a B-type magnet or the like.
  • the permeance coefficient has a meaning similar to the amount of magnetic flux, and means that the amount of magnetic flux at the periphery of the magnet is higher than that at the center.
  • Conventional methods for increasing the permeance coefficient include reducing the air gap in the motor as much as possible, using a material with low magnetic resistance as much as possible for the material of the armature and housing of the motor, or using the thickness of the housing (yoke) It is a method of eliminating leakage flux by increasing , or increasing the laminated length of the armature up to 80% of the magnet length.
  • the magnet support module 140 supports the magnet 130 .
  • the magnet support module 140 may be formed in a cylindrical shape like a conventional stator or rotor.
  • the magnet support module 140 is made of a material close to pure iron or a non-magnetic material with low magnetic resistance so that magnetic flux leakage does not occur outside the magnet support module 140 in order to prevent leakage flux of the magnet 130, or is self-contained. It can be manufactured in a way to control the thickness. In this embodiment, the magnet support module 140 may be manufactured in a bipolar or multipole type.
  • a plurality of magnet insertion slots 141 are formed in the magnet support module 140 .
  • the magnet 130 is coupled to the magnet support module 140 while sliding and inserting into the magnet insertion slot 141.
  • the magnet insertion slot 141 may be formed in a structure capable of clustering a plurality of magnets 130 and preventing them from being separated.
  • the magnet insertion slot 141 may be formed with a structure that does not fall out in the direction in which the magnet 130 is inserted, such as a tapered structure or a hook structure, all of which should be said to fall within the scope of the present invention. will be.
  • the magnet 130 is inserted into and coupled to the magnet insertion slots 141 of the magnet support module 140 in a sliding manner. At this time, the magnet 130 is individually inserted into the magnet insertion slots 141. It is applied as a plurality of individual magnets 130 that are slidably inserted and coupled.
  • inclined surfaces 131 are formed on both sides of the magnets 130, and the magnets are inserted into the magnet insertion slots 141 to support the magnets 130 while corresponding to the inclined surfaces 131 formed on the magnets 130.
  • An inclined wall portion 142 for support is formed. Therefore, the magnets 130 can be easily coupled to the magnet insertion slots 141 of the magnet support module 140 while preventing the magnets 130 from being separated from the front and back of the magnet support module 140 .
  • Prediction management by measuring effective magnetic flux is a very convenient method for both magnet users and magnet suppliers. This is because efficient lot management of magnets becomes possible when the characteristics of the motor are stable.
  • magnet characteristics may vary depending on the lot, and in the case of residual magnetic flux density (Br), there may be a characteristic change of about ⁇ 3 to 4%.
  • the effective magnetic flux When managed tightly, the deviation of the effective magnetic flux is very large, and as a result, it acts as a factor that destabilizes the characteristics of the motor.
  • the magnet support module 140 into which the plurality of magnets 130 are inserted can be usefully utilized through a flux meter during repair or maintenance from the design of the motor.
  • the management of the motor performance by the effective magnetic flux is equivalent to giving up. This is because it is not easy for magnet suppliers to change the thickness (permeance coefficient due to air gap) to match the effective magnetic flux within such a tight tolerance range.
  • This phenomenon appears higher as the shortest distance from the measurement site to the opposite pole is short. This is a phenomenon that comes from the difference in permeance coefficient, and more magnetic flux comes out at the part where the permeance coefficient is large, and it can be seen that the permeance coefficient increases as the shortest distance from the measured part to the opposite pole is short.
  • the permeance coefficient is a value determined by the material, shape, size, and direction of the magnetic field of the magnet. Even with the same magnet, the surface gauss is not constant depending on the position of the magnet surface. This is caused by the difference in the shortest distance from the opposite pole.
  • a larger amount of magnetic flux is produced in a region with a large permeance coefficient, and the permeance coefficient is larger as the shortest distance from the measured region to the opposite pole is short.
  • the plurality of magnets 130 according to the present invention may perform a function of maximizing the permeance coefficient.
  • the permeance coefficient refers to a value obtained by dividing the magnetic flux density B by the coercive force Hc.
  • the permeance coefficient is a very important factor, and is a value determined according to the material, shape, size, and magnetic field direction of the magnet.
  • This value calculates the operating point, obtains the operating point magnetic flux density (Bd), and calculates the magnetic flux amount ( ⁇ : Maxwell).
  • S is the total surface area
  • Am is the cross-sectional area of the magnet orthogonal to the magnetization direction
  • Lm is the length of the magnetization direction
  • ⁇ r is the reversible magnetic permeability. That is, the higher the permeance coefficient, the higher the total magnetic flux.
  • the permeance coefficient (magnetic flux density B / coercive force Hc) of point A becomes B/Hc of point A where the B-H curve intersects 1,200 gauss in (B).
  • the permeance (B/Hc) PA and PB of point A and point B at this time appear to be the same, and the value is 2,500 G / 1,450 oe, which is 1.72.
  • the surface gauss is not constant depending on the position of the magnet surface, which is caused by the difference in the shortest distance from the opposite pole. In other words, in order to raise the permeance coefficient, it is possible to simply reduce the air gap with the opposite pole.
  • the magnet 130 applied to the present invention is a structure for increasing the permeance coefficient, and clustering a plurality of magnets 130 without using a method such as stacking to affect the volume or structure of the motor It is possible to increase the permeance coefficient without going crazy.
  • the present embodiment which works based on the structure described above, it is possible to efficiently manage a lot of magnets so that the characteristics of the motor are stable through effective magnetic flux control, and the characteristics of the motor are unstable. It is possible to easily adjust the characteristics of the magnet and the change in the residual magnetic flux density (Br), which can cause deviation depending on the lot, which is a factor that causes deviation, and it is possible to predict and manage a certain amount of effective magnetic flux. It can be improved, and the convenience of manufacturing can be improved.
  • the permeance coefficient can be maximized.
  • FIG. 9 is a structural diagram of a high-efficiency motor according to a second embodiment of the present invention
  • FIG. 10 is an exploded view of a magnet support module and a magnet shown in FIG. 9
  • FIG. 11 is an enlarged structure diagram of a magnet support module
  • FIG. 12 is a magnet It is a front view.
  • the high-efficiency electric motor also includes a plurality of magnet support modules 240 disposed outside the armature 111 in the radial direction and having a plurality of magnet insertion slots 241, and a magnet support module. It includes magnets 230 inserted into and coupled to the magnet insertion slots 241 of 240 in a sliding manner.
  • the magnet 130 of the above-described embodiment is an individual magnet 130 as a bar structure forming an arc shape, whereas the magnet 230 of this embodiment forms an integral structure.
  • the magnet 230 applied to the present embodiment integrally connects a plurality of bar-shaped magnet parts 231 that are individually slidably inserted into and coupled to the magnet insertion slots 241 and a plurality of bar-shaped magnet parts 231. It may include a magnetic connection portion 232 to.
  • a connecting portion arranging portion 243 in which the magnet connecting portion 232 of the magnet 230 is disposed is further formed. Since the connection part seat arranging part 243 is formed, when the magnet 230 is inserted into the magnet insertion slot 241, the protruding part of the magnet 230 can be neatly removed.
  • the magnet 230 After manufacturing the magnet 230 constituting an integral structure as in this embodiment, there is an advantage that the magnet 230 can be assembled in one operation by sliding and inserting it into the magnet insertion slot 241.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

La présente invention concerne un moteur à haut rendement. Le moteur à haut rendement de l'invention comprend : au moins un module de support d'aimant qui est placé radialement à l'extérieur d'une armature et une pluralité de fentes d'insertion d'aimant; et des aimants qui sont insérés individuellement de manière coulissante et couplés avec les fentes d'insertion d'aimant du module de support d'aimant, les aimants consistent en une pluralité d'aimants individuels qui sont coulissés séparément et couplés aux fentes d'insertion d'aimant.
PCT/KR2022/008174 2021-06-10 2022-06-09 Moteur à haut rendement WO2022260461A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2021-0075346 2021-06-10
KR1020210075346A KR102511565B1 (ko) 2021-06-10 2021-06-10 고효율 전동기

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Publication Number Publication Date
WO2022260461A1 true WO2022260461A1 (fr) 2022-12-15

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PCT/KR2022/008174 WO2022260461A1 (fr) 2021-06-10 2022-06-09 Moteur à haut rendement

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WO (1) WO2022260461A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05199685A (ja) * 1992-01-20 1993-08-06 Fanuc Ltd 同期機のロータとその製造方法
JPH0652375U (ja) * 1992-12-24 1994-07-15 マブチモーター株式会社 小型モータ
JPH09275645A (ja) * 1996-03-31 1997-10-21 Sanyo Electric Co Ltd マグネットモータのステータ
JP2008182896A (ja) * 2008-04-19 2008-08-07 Minebea Motor Manufacturing Corp マグネットホルダおよびそれを用いたｄｃモータ
KR20180052167A (ko) * 2016-11-09 2018-05-18 주식회사 만도 직류 모터

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04131154U (ja) * 1991-05-24 1992-12-02 株式会社三ツ葉電機製作所 モータにおける永久磁石の止着構造
JP5544130B2 (ja) 2009-09-01 2014-07-09 富士フイルム株式会社 感活性光線性または感放射線性樹脂組成物及びそれを用いたパターン形成方法
DE102012223323A1 (de) * 2012-12-17 2014-06-18 Robert Bosch Gmbh Verfahren zur Herstellung eines Stators einer elektrischen Maschine, Stator und elektrische Maschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05199685A (ja) * 1992-01-20 1993-08-06 Fanuc Ltd 同期機のロータとその製造方法
JPH0652375U (ja) * 1992-12-24 1994-07-15 マブチモーター株式会社 小型モータ
JPH09275645A (ja) * 1996-03-31 1997-10-21 Sanyo Electric Co Ltd マグネットモータのステータ
JP2008182896A (ja) * 2008-04-19 2008-08-07 Minebea Motor Manufacturing Corp マグネットホルダおよびそれを用いたｄｃモータ
KR20180052167A (ko) * 2016-11-09 2018-05-18 주식회사 만도 직류 모터

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KR20220166512A (ko) 2022-12-19
KR102511565B1 (ko) 2023-03-17

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