WO2018076486A1 - Moteur - Google Patents

Moteur Download PDF

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Publication number
WO2018076486A1
WO2018076486A1 PCT/CN2016/109716 CN2016109716W WO2018076486A1 WO 2018076486 A1 WO2018076486 A1 WO 2018076486A1 CN 2016109716 W CN2016109716 W CN 2016109716W WO 2018076486 A1 WO2018076486 A1 WO 2018076486A1
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WO
WIPO (PCT)
Prior art keywords
stator
motor
rotor
outer stator
block
Prior art date
Application number
PCT/CN2016/109716
Other languages
English (en)
Chinese (zh)
Inventor
吴迪
陈金涛
诸自强
王洪晓
Original Assignee
广东威灵电机制造有限公司
美的威灵电机技术（上海）有限公司
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
Priority claimed from CN201621167414.4U external-priority patent/CN206226246U/zh
Priority claimed from CN201610942969.XA external-priority patent/CN106374707B/zh
Application filed by 广东威灵电机制造有限公司, 美的威灵电机技术（上海）有限公司 filed Critical 广东威灵电机制造有限公司
Publication of WO2018076486A1 publication Critical patent/WO2018076486A1/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
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • 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
    • H02K1/16—Stator cores with slots for windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • H02K16/04—Machines with one rotor and two stators

Definitions

  • the present invention relates to the field of motor technology, and more particularly to an electric machine.
  • direct drive technology has been increasingly applied to industry and life. Due to the omission of the transmission, the system efficiency of the direct drive technology has been effectively improved.
  • the direct drive technology is mainly applied to low-speed and high-torque applications, in order to improve the efficiency of the motor under low-speed and high-torque driving.
  • the motor needs to increase the outer diameter or the axial length as much as possible, the volume of the stator is significantly increased, and the cost of the stator portion is correspondingly increased.
  • the present invention aims to solve at least one of the technical problems in the related art to some extent.
  • the present invention provides an electric motor that has a simple structure, high system efficiency, cost saving, and wide application range.
  • An electric machine includes: an outer stator including at least one outer stator block, the outer stator block having a smaller number than an outer stator required to be connected in a closed loop shape along a circumferential direction of the motor a number of partitions; an inner stator located inside the outer stator and spaced apart from the outer stator in a radial direction of the motor, the inner stator including at least one inner block, the inner stator The number of segments is the same as the number of the outer stator segments; a rotatable rotor having a closed loop shape extending in the circumferential direction of the motor, the rotor being located outside the motor in the radial direction The inside of the stator and the outside of the inner stator.
  • the inner stator block and the outer stator block are respectively disposed on the inner side and the outer side of the rotor, and the number of the outer stator block and the inner stator block are equalized, so that the outer diameter of the rotor is changed.
  • the volume of the stator does not change significantly, which saves the cost of the stator part, and at the same time improves the efficiency of the motor in the case of low-speed and large-torque driving; and without changing the radial size of the rotor, the overall size of the motor can be reduced.
  • the structure of the motor is more compact, and is suitable for applications such as household appliances, electric vehicles, wind power generation and the like.
  • the motor has the advantages of simple structure, high work efficiency, low cost and wide application range.
  • the motor according to an embodiment of the present invention may further have the following additional technical features:
  • the outer stator is divided into a plurality of pieces and evenly arranged along the circumferential direction of the motor, the inner stator being divided into a plurality of pieces and evenly arranged along the circumferential direction of the motor.
  • the outer stator block and the inner stator block are arranged one above the other in the circumferential direction of the motor.
  • the rotor comprises: a plurality of magnetic cores and a plurality of non-magnetic spacing blocks, a plurality of The magnetic core and the plurality of non-magnetic spacer blocks are alternately arranged along the circumferential direction of the motor.
  • the outer stator segment comprises: an outer stator core and a stator winding, the stator winding being wound on the outer stator core.
  • the inner stator block comprises: an inner stator core and a permanent magnet, the permanent magnet being disposed on the inner stator core.
  • the pole pair of the magnetic field generated by each of the outer stator segments is ps
  • the number of permanent magnets of the inner stator is npm0
  • the number of outer stator blocks is
  • the inner stator segment comprises: an inner stator core and a stator winding, the stator winding being wound on the inner stator core.
  • the outer stator segment comprises: an outer stator core and a permanent magnet, the permanent magnet being disposed on the outer stator core.
  • the pole pair number of the magnetic field generated by each of the inner stator segments is ps
  • the number of permanent magnets of the outer stator is npm0
  • the number of inner stator blocks is
  • the motor further includes: a stator fixing plate and a rotor fixing plate, the inner stator core is located inside the outer stator core of the stator in a radial direction of the motor and The outer stator cores are spaced apart, and the rotor fixing plate and the stator fixing plate are spaced apart from each other in the axial direction of the motor and are connected to the output shaft, and the rotor is disposed on the rotor fixing plate.
  • the central axis of the outer stator, the central axis of the inner stator and the central axis of the rotor coincide.
  • FIG. 1 is a longitudinal cross-sectional view of a motor in accordance with an embodiment of the present invention
  • FIG. 2 is a cross-sectional view of a motor in accordance with an embodiment of the present invention.
  • Figure 3 is a longitudinal cross-sectional view of a motor in accordance with another embodiment of the present invention.
  • Figure 4 is a cross-sectional view of a motor in accordance with another embodiment of the present invention.
  • Fig. 5 is an enlarged view of a portion D in Fig. 4;
  • 11 outer stator core; 12: stator winding; 13: permanent magnet;
  • 21 inner stator core; 22: permanent magnet; 23: stator winding;
  • the motor 100 according to an embodiment of the present invention will be specifically described below with reference to FIGS. 1 through 5.
  • An electric machine 100 includes an outer stator 10, an inner stator 20, a rotatable rotor 30, and an output shaft 40.
  • the outer stator 10 includes at least one outer stator block, the number of outer stator segments being smaller than the number of outer stator segments required to be connected in a closed loop shape along the circumferential direction of the motor 100, and the inner stator 20 at the diameter of the motor 100
  • the inner stator 20 Upwardly located on the inner side of the outer stator 10 and spaced apart from the outer stator 10, the inner stator 20 includes at least one inner block, the number of inner stator blocks is the same as the number of outer stator blocks, and the outer stator block and the inner stator block are along
  • the circumferential direction of the motor 100 is relatively one-to-one, and the rotor 30 has a closed-loop shape extending in the circumferential direction of the motor 100.
  • the rotor 30 is located on the inner side of the outer stator 10 and the outer side of the inner stator 20 in the radial direction of the motor 100, and the output shaft 40 is The rotors 30 are connected.
  • the motor 100 is mainly composed of an outer stator 10, an inner stator 20, a rotatable rotor 30, and an output shaft 40, wherein the outer stator 10 is composed of at least one outer stator block, and the inner stator block is composed of at least one inner stator.
  • Block composition outside
  • the number of the stator block and the inner stator block are the same, respectively smaller than the number of blocks required to be connected to the closed ring along the circumferential direction of the motor 100, and the outer stator block and the inner stator 20 are arranged one-to-one along the circumferential direction of the motor 100, In the radial direction of the motor 100, the outer stator 10 is spaced apart from the inner stator 20, that is, the outer stator 10 is spaced apart from the inner stator 20 by a certain distance, and the outer stator 10 is located outside the inner stator 20.
  • the rotor 30 is formed as a closed ring in the circumferential direction of the motor 100, and a rotor 30 is disposed in the interval between the outer stator 10 and the inner stator 20 in the radial direction of the motor 100, that is, the rotor 30 is located radially in the motor 100
  • the inner side of the stator 10 and the outer side of the inner stator 20, the rotor 30 is connected to the output shaft 40, and the rotation of the rotor 30 causes the output shaft 40 to also rotate, thereby performing work on the outside.
  • the inner stator block and the outer stator block are respectively disposed on the inner side and the outer side of the rotor 30, and the positions of the outer stator block and the inner stator block are corresponding and equal in number,
  • the volume of the stator does not change significantly, the cost of the stator portion is saved, and the efficiency of the motor 100 in the case of low-speed and large-torque driving is improved; and the diameter of the rotor 30 is not changed.
  • the size of the motor 100 can be reduced, so that the structure of the motor 100 is more compact, and is suitable for applications such as household appliances, electric vehicles, wind power generation, and the like.
  • the motor 100 has a simple structure, high work efficiency, low cost, and wide application range.
  • the outer stator block and the inner stator block respectively comprise one.
  • the outer stator 10 of the motor 100 includes an outer stator block.
  • the inner stator 20 also includes an inner stator block, and the outer stator block and the inner stator block.
  • Corresponding positions, that is, the outer stator 10 and the inner stator 20 respectively form arc segments provided on the outer side and the inner side of the rotor 30, and on the basis of ensuring high torque, it is advantageous to reduce the volume of the motor 100, thereby reducing the motor.
  • the cost of 100 can further reduce the weight of the motor 100.
  • the outer stator is divided into a plurality of pieces and evenly arranged along the circumferential direction of the motor 100
  • the inner stator is divided into a plurality of pieces and evenly arranged along the circumferential direction of the motor 100.
  • the outer stator 10 includes a plurality of outer stator segments that are evenly spaced along the circumferential direction of the motor 100
  • the inner stator 20 includes a plurality of inner stator segments that are evenly spaced along the circumference of the motor 100
  • the positions of the plurality of outer stator segments are in one-to-one correspondence with the positions of the plurality of inner stator segments, and each outer stator segment and the corresponding inner stator segment are spaced apart in the radial direction of the motor 100, and the outer stator is divided.
  • the rotor 30 can be disposed between the outer stator 10 and the inner stator 20, thereby ensuring that the outer stator 10 and the inner stator 20 can generate a uniform magnetic field, thereby improving the performance of the motor 100, thereby improving the motor 100. quality.
  • outer stator blocks and inner stator blocks can be flexibly set according to actual conditions, for example, if three outer stator blocks and three inner stator blocks can be set; or outer stator block and default The number of sub-blocks includes five equals.
  • the rotor 30 includes a plurality of magnetic cores 31 and a plurality of non-magnetic spacing blocks 32.
  • the plurality of magnetic cores 31 and the plurality of non-magnetic spacing blocks 32 are alternately arranged along the circumferential direction of the motor 100.
  • the rotor 30 is mainly composed of a plurality of cores 31 and a plurality of non-magnetic spacers 32, and the plurality of cores 31 and the plurality of non-magnetic spacers 32 are alternately arranged in the circumferential direction of the motor 100, respectively.
  • a non-magnetic spacing block 32 is disposed on each adjacent side of each of the conductive cores 31, and a conductive core 31 is disposed between each of the two non-magnetic spacing blocks 32.
  • the outer diameter of the rotor 30 can be freely selected, and the volume of the stator does not change significantly, and the amount of the stator is not affected.
  • a closed annular rotor 30 formed in the radial direction of the motor 100, a plurality of cores 31 and a plurality of non-magnetic spacers 32 is located between the outer stator 10 and the inner stator 20, that is, in the radial direction of the motor 100, and the rotor 30 is located in the inner stator.
  • the outer side of the outer stator 10, the inner side of the outer stator 10, and the rotor 30 have a certain gap with the outer stator 10 and the inner stator 20, respectively.
  • the outer stator block includes an outer stator magnet core 11 and a stator winding 12 wound on the outer stator core 11 .
  • the outer stator block is mainly composed of the outer stator core 11 and the stator winding 12, and the outer stator core 11 can be processed by a high-magnetic material, and the stator winding 12 is wound around the outer stator core 11
  • the stator winding 12 is wound around three, A, B and C of the outer stator core 11 and the stator winding 12 forms a three-phase winding.
  • each outer stator is divided.
  • the stator winding 12 corresponding to the block generates a magnetic field.
  • each outer stator block has a plurality of stator teeth 10a and a plurality of slots 10b respectively located between adjacent stator teeth 10a, and the number of stator teeth 10a of each outer stator block is Ns0, and each outer stator
  • a plurality of stator teeth 10a are arranged on each outer stator block, and a plurality of stator teeth 10a define a plurality of slots 10b, and the stator teeth 10a and the slots 10b are alternately arranged, and each of Ns0 is used.
  • ⁇ 0 represents the groove angle of the adjacent tooth groove 10b of each outer stator block
  • n0 represents the motor 100.
  • the number of outer stator segments required to be circumferentially connected in a closed loop shape that is, the groove pitch angle of the adjacent tooth grooves 10b of each outer stator block is equal to 360° and the number of stator teeth 10a of each outer stator block N0 times the quotient of Ns0.
  • the inner stator block includes an inner stator core 21 and a permanent magnet 22, and the permanent magnet 22 is disposed on the inner stator core 21 .
  • the inner stator 20 is mainly composed of an inner stator core 21 and a permanent magnet 22.
  • the inner stator core 21 can also be processed from a high magnetic material, and the permanent magnet 22 is disposed on the inner stator core. 21, in the circumferential direction of the motor 100, the permanent magnets 22 are evenly spaced on the inner stator core 21, and the permanent magnets 22 are parallel magnetized, that is, the permanent magnets 22 of the same polarity are relatively uniform. Arranged on the inner stator core 21 to produce an equivalent permanent magnetic field.
  • the number of pole pairs of the magnetic field generated by each outer stator block is ps
  • the number of permanent magnets 22 of the inner stator 20 is npm0
  • the magnetic pole pair generated by 22 is half of the number of permanent magnets 22 of the inner stator 20.
  • the number of outer stator segments required for the shape is the product of the number of pairs of magnetic poles generated by each outer stator 10 and the absolute value of the sum of the logarithms of the magnetic poles generated by each inner stator 20, and it can be said that the rotor 30 is
  • the number of the conductive cores 31 is n0 times the absolute value of the sum of the magnetic poles generated by each outer stator 10 and the logarithm of the magnetic poles generated by each inner stator 20 (n0 is connected in a closed loop shape along the circumferential direction of the motor 100).
  • the motor 100 in the above embodiment mainly includes a three-layer structure, that is, an outer stator 10, a rotor 30, and an inner stator 20, wherein the outer stator 10 includes an outer stator core 11 and a stator winding 12, that is, the outer stator 10
  • the inner stator 20 includes an inner stator core 21 and a permanent magnet 22, that is, the inner stator 20 is a permanent magnet excitation side of the stator, and the excitation side of the stator winding and the permanent magnet excitation side of the stator are used as components of the stator, respectively.
  • the outermost layer and the innermost layer disposed radially in the motor 100 may also be arranged oppositely, that is, the excitation side of the stator winding is disposed at the innermost layer in the radial direction of the most motor 100, and the permanent magnet excitation side of the stator is disposed in the radial direction of the motor 100.
  • the outer layer, the rotor 30 is located between the excitation side of the stator winding and the excitation side of the permanent magnet of the stator.
  • the inner stator block includes: an inner stator magnet core 21 and a stator winding 23, the stator winding 23 is wound on the inner stator core 21, and the outer stator block includes: an outer stator The magnetic core 11 and the permanent magnet 13 are provided on the outer stator core 11 .
  • the outer stator 10 of the above embodiment is arranged opposite to the position of the inner stator 20, that is, the outer stator 10 of Fig. 1 is arranged as the inner stator 20 of Fig. 3, the inner stator 20 of Fig. 1.
  • the outer stator in FIGS. 3 to 5 is the stator permanent magnet excitation side
  • the inner stator 20 is the stator winding excitation side.
  • the number of pole pairs of the magnetic field generated by each inner stator block is ps
  • the number of permanent magnets 13 of the outer stator is npm0
  • the pole pair of the magnetic field generated by the stator windings 23 of each inner stator block is expressed as ps, and the number of mounted permanent magnets 13 on the outer stator 10 is npm0.
  • Each outer stator block The number of pole pairs generated by the upper permanent magnet 13 is half of the number of permanent magnets 13 placed on the outer stator 10.
  • the number of the magnetic cores 31 of the rotor 30 is the number of magnetic pole pairs generated by each inner stator block and each outer The stator segments produce n0 times the logarithm and/or difference of the magnetic field poles, where n0 is the number of inner stator segments required to connect in a closed loop shape along the circumference of the motor 100.
  • the motor 100 further includes a stator fixing plate 60 and a rotor fixing plate 70 which are located inside the outer stator core 11 and radially spaced apart from the outer stator core 11 in the radial direction of the motor 100, and the rotor
  • the fixing plate 70 and the stator fixing plate 60 are arranged spaced apart in the axial direction of the motor 100 and connected to the output shaft 40, and the rotor 30 is provided on the rotor fixing plate 70.
  • the motor 100 further includes a stator fixing plate 60 and a rotor fixing plate 70.
  • an outer stator core 11 and a rotor 30 are sequentially disposed from the outside to the inside.
  • the inner stator magnet core 21, that is, the outer stator core 11 is located at the outermost layer
  • the inner stator core 21 is located at the innermost layer
  • the outer stator core 11 and the inner stator core 21 are separated by a certain gap, and A rotor 30 is provided at this interval.
  • the outer stator core 11 and the inner stator core 21 are respectively placed on the stator fixing plate 60.
  • an output shaft 40 and a bearing 50 are connected, and the rotor fixing plate 70 is at the axis of the output shaft 40.
  • the rotor fixing plate 70 Arranged upwardly from the stator fixing plate 60, the rotor fixing plate 70 is located above the stator fixing plate 60, the rotor fixing plate 70 is respectively connected with the output shaft 40 and the rotor 30, and the rotor 30 can drive the output shaft 40 to rotate through the rotor fixing plate 70.
  • the output shaft 40 maintains rotational independence with the stator fixing plate 60 through the bearing 50. Further, the stator fixing plate 60 functions to carry the upper end member.
  • the central axis of the outer stator 10, the central axis of the inner stator 20, and the central axis of the rotor 30 coincide.
  • a plurality of outer stator segments and a plurality of inner stator segments are respectively evenly spaced along the circumferential direction of the motor 100, the rotor 30 has a closed annular shape, a ring formed by the outer stator 10, and the rotor 30 is closed.
  • the annular and inner stators 20 are formed by the annular three annular centers (i.e., the position of the output shaft 40 in Fig. 2), that is, the central axis of the outer stator 10, the central axis of the inner stator 20 and the central axis of the rotor 30 are the same center. Axis.
  • the motor 100 according to an embodiment of the present invention will be described in detail below with reference to specific embodiments.
  • a motor 100 includes an outer stator 10, an inner stator 20, a rotatable rotor 30, an output shaft 40, a bearing 50, a stator fixing plate 60, and a rotor fixing plate 70.
  • the outer stator 10 is composed of a plurality of stator blocks (three outer stators 10 are shown as outer stator blocks in FIG. 2)
  • the inner stator 20 is composed of a plurality of stator blocks (shown in FIG. 2).
  • 3 inner stators 20 block inner stator blocks), 3 outer stators 10 block outer stator blocks and 3 inner stators 20 block inner stator blocks are evenly spaced along the circumferential direction of the motor 100, respectively
  • the outer stator block of the outer stator 10 is spaced apart from the stator block of the inner stator 20, and the positions are one-to-one correspondence, and the outer stator 10 block outer stator block is located in the inner stator 20 block.
  • the rotor 30 is disposed between the outer stator 10 and the inner stator 20 to form a closed loop.
  • the outer stator 10 In the radial direction of the motor 100, the outer stator 10, the rotor 30 and the inner stator 20 are sequentially from the outside to the inside.
  • the outer stator 10 and the inner stator 20 are placed on the stator fixing plate 60, and the output shaft 40 is located at the center of the stator fixing plate 60, and is coupled to the stator fixing plate 60 through a bearing 50.
  • the rotor fixing plate 70 Arranged spaced apart from the stator retaining plate 60, the rotor retaining plate 70 is coupled to the output shaft 40 and the rotor 30.
  • the motor 100 mainly includes a three-layer structure, that is, a stator winding excitation side, a stator permanent magnet excitation side, and a reluctance rotor 30, and a stator winding.
  • the excitation side and the stator permanent magnet excitation side are formed as components of the stator, and may be respectively arranged in the outermost layer and the innermost layer in the radial direction of the motor 100, or vice versa, that is, respectively arranged in the innermost layer and the outermost layer, and the rotor 30 is located.
  • the center of the stator winding excitation side and the stator permanent magnet excitation side are spaced apart by a fixed air gap.
  • the excitation side of the stator winding (ie, the outer stator 10) is composed of a high-magnetic material composed of a segmented outer stator core 11 and a stator winding 12 wound thereon.
  • the permanent magnet excitation side of the stator (ie, the inner stator 20) is composed of an inner stator core 21 and a permanent magnet 22 made of a highly magnetic material, and the permanent magnets 22 are evenly arranged along the circumference of the motor 100 in an alternating polarity manner. Any form of mounting of the rotor 30, namely built-in (IPM), surface mount (SPM), surface mount (Inset-SPM), and the like.
  • the theoretical number of blocks on the permanent magnet side of the stator is n0 (that is, the number of inner stator cores 21 corresponding to the stator core of a complete circumference), and the actual number of blocks is the same as the excitation side of the stator winding.
  • the reluctance rotor (ie, the rotor 30) is alternately arranged by a conductive core 31 made of a highly magnetically permeable material and a non-magnetically permeable spacer 32 composed of a non-magnetic material to form a complete circumference (closed loop) without using a block.
  • the number of core blocks of the reluctance rotor is pr.
  • the reluctance rotor is directly connected to the output shaft 40 through the rotor fixing plate 70 as a torque output element of the motor 100.
  • the motor 100 of the embodiment of the present invention will be described in detail below in conjunction with a plurality of embodiments.
  • the outer stator 10 is arranged on the outermost side of the radial three-layer structure of the motor 100
  • the inner stator 20 is arranged on the innermost side of the radial three-layer structure of the motor 100
  • the rotor 30 is located on the two-layer stator.
  • the outer stator 10 and the inner stator 20 are respectively placed on the stator fixing plate 60
  • the rotor 30 is directly connected to the output shaft 40 through the rotor fixing plate 70
  • the output shaft 40 passes through the bearing 50. It is connected to the stator fixing plate 60 and maintains rotational independence.
  • the permanent magnets 22 are parallel magnetized, and are uniformly placed on the inner stator in the same manner as the permanent magnets 22 of the same polarity.
  • the rotor 30 is composed of a magnetic core 31 and a non-magnetic spacer 32
  • the outer stator 10 is arranged on the outermost side of the radial three-layer structure of the motor 100
  • the inner stator 20 is arranged on the innermost side of the radial three-layer structure of the motor 100
  • the rotor 30 is located on the two-layer stator.
  • the outer stator 10 and the inner stator 20 are placed on the stator fixing plate 60
  • the rotor 30 is directly connected to the output shaft 40 through the rotor fixing plate 70
  • the output shaft 40 is fixed to the stator through the bearing 50.
  • the plates 60 are connected and maintain rotational independence.
  • the permanent magnets 13 are parallel magnetized and uniformly placed in the opposite direction to the permanent magnets 13 of the same polarity.
  • the equivalent permanent magnetic field generated by the pole pair pf 3.
  • the rotor 30 is composed of a core 51 and a non-magnetic spacer block 32.
  • the outer stator core 19 of the outer stator 10, the inner stator core 21 of the inner stator 20, and the core of the rotor 30 may be made of a high magnetic permeability material such as silicon steel sheet, cobalt steel sheet, permalloy, or SMC. Manufactured, but the invention is not limited to this.
  • the stator windings 23 may be single-phase or multi-phase.
  • the stator windings 23 may be in the form of fractional-slot windings or integer-slot windings.
  • the material of the stator windings 23 may be copper enameled wire, aluminum enameled wire, etc., but the invention is not limited thereto.
  • the inner stator 20 can adopt any mounting form of the conventional permanent magnet rotor 30, that is, built-in type (IPM), surface mount type (SPM), surface mount type (Inset-SPM), etc., and the permanent magnet 13 can be made of aluminum-iron-boron,
  • the high coercive permanent magnet material such as ferrite, samarium cobalt, and aluminum nickel cobalt is used, and the present invention is not limited thereto.
  • the outer diameter of the rotor 30 of the present invention can be freely selected with the type of load without significantly changing the stator volume, and does not significantly affect the amount of the permanent magnet 13 under the premise that the outer diameter of the rotor 30 is changed. Under a certain stator excitation magnetic field, the output torque of the motor 100 is increased in a square relationship with the outer diameter of the motor 100. Therefore, the outer diameter of the rotor 30 can be increased without significantly changing the cost and the stator volume. The torque density of the motor 100 is greatly increased.
  • the inner stator 20 is spaced apart from the outer stator 10 in the radial direction of the motor 100, and the inner stator 20 is located inside the outer stator 10
  • the rotor 30 is formed in a closed loop shape extending in the circumferential direction of the motor 100, and is disposed between the outer stator 10 and the inner stator 20, so that when the outer diameter of the rotor 30 is changed, the volume of the stator does not change significantly, and the stator portion is saved.
  • the cost and the efficiency of the motor 100 in the low-speed and large-torque driving are improved, and the structure is simple, and can be applied to household appliances, electric vehicles, wind power generation and the like.
  • the motor 100 has a simple structure, high system efficiency, cost saving, and wide application range.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
  • the meaning of "a plurality” is at least two, such as two, three, etc., unless specifically defined otherwise.
  • the terms “installation”, “connected”, “connected”, “fixed” and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. Or in one piece; it may be a mechanical connection, or it may be an electrical connection or a communication with each other; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship between two elements. Unless otherwise expressly defined. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

L'invention concerne un moteur (100), comprenant : un stator externe (10) ; ledit stator externe (10) comprend au moins un bloc de stator externe ; la quantité de blocs de stator externe est inférieure à la quantité de blocs de stator externe requis le long de la circonférence du moteur (100) à connecter pour former une boucle fermée ; un stator interne (20) ; ledit stator interne (20) est situé, dans la direction radiale du moteur (100), sur le côté interne du stator externe (10) et agencé à un intervalle avec le stator externe (10) ; le stator interne (20) comprend au moins un bloc de stator interne ; la quantité desdits blocs de stator interne étant identique à la quantité de blocs de stator externe ; un rotor rotatif (30) ; ledit rotor (30) est une boucle fermée s'étendant le long de la direction circonférentielle du moteur (100) ; le rotor (30) est situé, dans la direction radiale du moteur (100), sur le côté interne du stator externe (10) et sur le côté externe du stator interne (20).
PCT/CN2016/109716 2016-10-31 2016-12-13 Moteur WO2018076486A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201621167414.4U CN206226246U (zh) 2016-10-31 2016-10-31 电机
CN201621167414.4 2016-10-31
CN201610942969.X 2016-10-31
CN201610942969.XA CN106374707B (zh) 2016-10-31 2016-10-31 电机

Publications (1)

Publication Number Publication Date
WO2018076486A1 true WO2018076486A1 (fr) 2018-05-03

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PCT/CN2016/109716 WO2018076486A1 (fr) 2016-10-31 2016-12-13 Moteur

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WO (1) WO2018076486A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109193988A (zh) * 2018-11-28 2019-01-11 陈思衡 一种高能效直流发电机及其发电方法

Citations (6)

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