WO2023094758A1 - Procédé de dimensionnement d'un anneau magnétique à flux orienté multipolaire, rotor, machine électrique tournante, et aéronef associés - Google Patents
Procédé de dimensionnement d'un anneau magnétique à flux orienté multipolaire, rotor, machine électrique tournante, et aéronef associés Download PDFInfo
- Publication number
- WO2023094758A1 WO2023094758A1 PCT/FR2022/052144 FR2022052144W WO2023094758A1 WO 2023094758 A1 WO2023094758 A1 WO 2023094758A1 FR 2022052144 W FR2022052144 W FR 2022052144W WO 2023094758 A1 WO2023094758 A1 WO 2023094758A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- magnet
- equal
- ring
- sub
- value
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000005405 multipole Effects 0.000 title abstract 2
- 230000004323 axial length Effects 0.000 claims abstract description 14
- 230000011218 segmentation Effects 0.000 claims description 6
- 230000004907 flux Effects 0.000 claims description 5
- 238000004513 sizing Methods 0.000 claims description 4
- 238000000354 decomposition reaction Methods 0.000 claims description 2
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Classifications
-
- 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
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/278—Surface mounted magnets; Inset magnets
- H02K1/2783—Surface mounted magnets; Inset magnets with magnets arranged in Halbach arrays
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
-
- 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
- TITLE Method for sizing a magnetic ring with multipolar oriented flux, rotor, rotating electrical machine, and associated aircraft
- the invention relates to the optimization of flux-oriented permanent magnets according to a Halbach topology, and more particularly to a method for dimensioning a multipolar flux-oriented magnetic ring.
- the invention further relates to a rotor comprising such a magnetic ring, a rotating electrical machine comprising such a rotor, and an aircraft comprising such a rotating electrical machine.
- the magnetic fields of successive magnets are oriented to amplify the resulting magnetic field in the air gap while eliminating the resulting magnetic field on the opposite side of the magnets.
- Figure 1 illustrates an example of such a rotor 1 known from the state of the art.
- the rotor 1 comprises a yoke 2 of radius 1c and a multipolar flux-oriented magnetic ring 3 comprising a flux-oriented multipolar magnet 4 according to a Halbach topology.
- the magnet 4 has an axial length Iz, a height 1R and comprises the Np/2 pairs of poles.
- the radius of the rotor 1 is equal to the sum R of the radius le of the yoke 2 and the height 1R of the magnet forming the ring 6.
- Document EP3736944 discloses an example of a rotor comprising permanent magnets according to a Halbach topology.
- each rotor magnetic pole is composed of ten segmented magnets along an axial direction.
- the object of the invention is to overcome all or part of these drawbacks.
- the subject of the invention is a method for dimensioning a magnetic ring with multipolar oriented flux for a rotor of a rotating electrical machine, the magnetic ring comprising a predetermined number of pairs of poles, the the magnetic ring being formed by at least one flux-oriented magnet.
- the process includes:
- the method includes the circumferential segmentation of the magnet into at least two sub-magnets.
- the circumferential segmentation of the magnet into at least two sub-magnets makes it possible to minimize the losses by eddy current in the ring formed by the sub-magnets while minimizing the number of sub-magnets to be manufactured and glued on a rotor yoke for forming the magnetic ring to reduce the time and complexity of manufacturing a rotor comprising the yoke and the ring.
- the magnet is not segmented circumferentially into sub-magnets.
- the circumferential segmentation of the magnet into at least two sub-magnets comprises:
- the magnet is segmented into a number of sub-magnets equal to the sum, each sub-magnet having a angular sector with respect to the center of the ring equal to the value twice Pi divided by the sum, and each sub-magnet comprising a number of poles equal to the numbers of poles of the ring divided by the sum.
- the method comprises:
- step a in which the characteristic sum is equal to the multiplication of the characteristic number by the smallest prime number previously chosen
- the magnet is not segmented into sub-magnets.
- the second reference value is equal to the minimum value multiplied by an equal coefficient to the multiplication of a first coefficient by a second coefficient, the first coefficient being equal to the density of the second material divided by the density of the first material, and the second coefficient being equal to the electrical conductivity of the second material divided by the electrical conductivity of the first material.
- a rotor for a rotating electrical machine comprising a magnetic ring obtained by a method as defined previously.
- a rotating electrical machine comprising a rotor as defined previously.
- FIG 1 schematically illustrates a rotor known from the state of the art
- FIG 2 schematically illustrates an aircraft according to the invention
- FIG 3 schematically illustrates an example of the rotor according to the invention
- FIG 4 schematically illustrates an example of a method for implementing the dimensioning device according to the invention
- FIG 5 schematically illustrates a second example of the rotor according to the invention.
- FIG 6 schematically illustrates a third example of the rotor according to the invention.
- FIG. 2 schematically illustrates an aircraft 5 comprising a rotating electrical machine 6 comprising a wound stator 7 having a central axis B, and a rotor 8 arranged in the stator 7 and comprising Np poles or Np/2 pairs of poles .
- FIG. 3 illustrates an example of the rotor 8 according to the invention determined from the rotor 1 known from the state of the art and illustrated in FIG.
- the rotor 8 comprises the yoke 2 surrounded by a flux-oriented multipolar ring 9 formed by flux-oriented segmented sub-magnets 10 according to a Halbach topology.
- Each sub-magnet 10 has an axial length Izi, a height IRI and a circumferential length le defined by an angular sector 0 with respect to the center of the ring 6.
- the height IR I of the sub-magnets 10 is equal to the height 1R of the magnet forming the ring 6 of the rotor 1 known from the state of the art.
- the sub-magnets 10 are segmented along an axial direction.
- the sum of the axial length Izi of the sub-magnets 10 is equal to the axial length Iz of the magnet 7.
- the radius of the rotor 8 is equal to the sum R of the radius le of the yoke 2 and the height IRI of the sub-magnets 10.
- Each sub-magnet 10 comprises 1/nu pole, nu being the number of sub-magnets 10 to form a pole.
- the circumferential or orthogonal length is equal to:
- segmented sub-magnets 10 are not all of the same size within the same pole of the ring 9, it is appropriate to select the orthogonal length of the smallest sub-magnet of the pole.
- the dimensions of the sub-magnets 10 are determined so that the eddy current losses are minimized in the ring 9 formed by the sub-magnets 10, and so that the number of sub-magnets 10 to be manufactured and stuck on the cylinder head 2 is reduced to reduce the duration and complexity of manufacturing the rotor 8 by a sizing device for sizing the sub-magnets 10 in order to minimize the eddy current losses in said sub-magnets 10 and in order to minimize the number of sub-magnets 10 forming the ring 9.
- the device comprises for example a configured processing unit.
- Figure 4 illustrates an example of a method of implementing the device.
- the ring 9 comprises the multipolar magnet forming the ring 3 of the rotor illustrated in figure 1.
- the device 11 determines a characteristic dimension 1 Z ,SFM of the magnet 4 forming the ring 3 equal to the minimum value among the outer perimeter 2?rR of the ring 3 of the rotor 1 and the axial length Iz of the ring.
- the device 11 also determines a reference value Vref equal to the minimum value among a predetermined reference length Iref and twice the value Pi.
- the reference length Iref is for example equal to the maximum value chosen from the axial length Iz, the height 1R OR the perimeter of the ring equal to 2?rR of the magnet 4 shown in Figure 1.
- the device 11 compares the characteristic dimension 1 Z ,SFM with the value Vref.
- the magnet 4 forming the ring 3 of the rotor 1 is not circumferentially segmented.
- the ring 9 of the rotor 8 is formed by the annular multipolar magnet 4 forming the ring 3 of the rotor 1.
- FIG. 5 illustrates a second example of the rotor 8 comprising annular magnets 12, the magnet 4 of the ring 3 having for example been segmented axially into annular magnets of axial length l zi to minimize losses by eddy current.
- the magnet 4 is segmented circumferentially into at least two sub-magnets 10.
- an integer variable i is initialized to the value 0.
- variable i is incremented by one unit.
- the device 11 determines a characteristic number NUM equal to the smallest prime number Pi among a set of prime numbers comprising the prime numbers Pk, k varying from 1 to Np.
- the device 11 further determines a second reference value Vref2 equal to the minimum value from among the predetermined reference length Iref and twice the value Pi divided by a characteristic sum SOM equal to at least the value of the number NUM characteristic such as:
- the device 11 also determines a second characteristic dimension 1 Z ,SFM2 equal to the minimum value among the outer perimeter 2nR of the ring 3 divided by the characteristic number NUM and the axial length Iz of the ring .
- the device 11 compares the second characteristic dimension 1Z ,SFM2 with the second value Vref2.
- the device 11 determines that the magnet 4 forming the ring 3 is segmented into a number of sub-magnets 10 equal to the sum SOM, each sub-magnet 10 having an angular sector with respect to the center of the ring 9 equal to the value twice Pi divided by the sum SOM, and each sub-magnet 10 comprising a number of poles equal to the numbers of poles Np of the ' ring 9 divided by the sum SOM (step 28).
- step 29 If the second dimension 1 Z ,SFM2 characteristic is greater than the second value Vref2, and the set of prime numbers is not not empty (step 29), the method continues at step 23 by incrementing the value i, then repeats step 24 by determining the characteristic number NUM equal to the smallest prime number among the set of prime numbers from which is subtracted the smallest prime number previously chosen,
- step 29 magnet 4 is not segmented into submagnets 8.
- the ring 9 of the rotor 8 is formed by the annular multipolar magnet 4 forming the ring 3 of the rotor 1.
- a first sub-magnet consists of a first material of density p l and electrical conductivity rl
- a second sub-magnet consists of a second material of density p2 and electrical conductivity r2
- the second value of reference Vref2 is multiplied by a coefficient COEFF such that:
- Figure 6 illustrates a third example of the rotor 8 comprising the ring 9 formed by sub-magnets 13, each sub-magnet 13 forming a pole of the ring 9.
- the ring 9 can comprise the annular magnet 4, or one or more flux-oriented sub-magnets, each sub-magnet corresponding to a pair of poles or each sub-magnet corresponding to one pole depending on the result of the dimensioning process.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280077935.2A CN118302932A (zh) | 2021-11-25 | 2022-11-21 | 用于对多极定向通量的磁环进行尺寸确定的方法以及相关联的转子、旋转电机和飞行器 |
EP22829786.7A EP4437636A1 (fr) | 2021-11-25 | 2022-11-21 | Procédé de dimensionnement d'un anneau magnétique à flux orienté multipolaire, rotor, machine électrique tournante, et aéronef associés |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR2112534A FR3129542B1 (fr) | 2021-11-25 | 2021-11-25 | Procédé de dimensionnement d’un anneau magnétique à flux orienté multipolaire, rotor, machine électrique tournante, et aéronef associés |
FRFR2112534 | 2021-11-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023094758A1 true WO2023094758A1 (fr) | 2023-06-01 |
Family
ID=80122347
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2022/052144 WO2023094758A1 (fr) | 2021-11-25 | 2022-11-21 | Procédé de dimensionnement d'un anneau magnétique à flux orienté multipolaire, rotor, machine électrique tournante, et aéronef associés |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP4437636A1 (fr) |
CN (1) | CN118302932A (fr) |
FR (1) | FR3129542B1 (fr) |
WO (1) | WO2023094758A1 (fr) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8446121B1 (en) * | 2010-11-19 | 2013-05-21 | The Boeing Company | High performance actuator motor |
US20180287437A1 (en) * | 2017-03-31 | 2018-10-04 | University Of Illinois At Urbana-Champaign | High frequency electric motor, control system, and method of manufacture |
EP3736944A1 (fr) | 2019-05-08 | 2020-11-11 | Rolls-Royce plc | Machines électriques |
-
2021
- 2021-11-25 FR FR2112534A patent/FR3129542B1/fr active Active
-
2022
- 2022-11-21 WO PCT/FR2022/052144 patent/WO2023094758A1/fr active Application Filing
- 2022-11-21 CN CN202280077935.2A patent/CN118302932A/zh active Pending
- 2022-11-21 EP EP22829786.7A patent/EP4437636A1/fr active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8446121B1 (en) * | 2010-11-19 | 2013-05-21 | The Boeing Company | High performance actuator motor |
US20180287437A1 (en) * | 2017-03-31 | 2018-10-04 | University Of Illinois At Urbana-Champaign | High frequency electric motor, control system, and method of manufacture |
EP3736944A1 (fr) | 2019-05-08 | 2020-11-11 | Rolls-Royce plc | Machines électriques |
Also Published As
Publication number | Publication date |
---|---|
CN118302932A (zh) | 2024-07-05 |
EP4437636A1 (fr) | 2024-10-02 |
FR3129542B1 (fr) | 2024-03-15 |
FR3129542A1 (fr) | 2023-05-26 |
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