WO2020199732A1 - Ensemble stator segmenté et générateur d'énergie - Google Patents

Ensemble stator segmenté et générateur d'énergie Download PDF

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Publication number
WO2020199732A1
WO2020199732A1 PCT/CN2020/072980 CN2020072980W WO2020199732A1 WO 2020199732 A1 WO2020199732 A1 WO 2020199732A1 CN 2020072980 W CN2020072980 W CN 2020072980W WO 2020199732 A1 WO2020199732 A1 WO 2020199732A1
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WO
WIPO (PCT)
Prior art keywords
rack
groove
track
stator
splicing
Prior art date
Application number
PCT/CN2020/072980
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English (en)
Chinese (zh)
Inventor
兰斌
王栋
张世福
李延慧
Original Assignee
北京金风科创风电设备有限公司
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Application filed by 北京金风科创风电设备有限公司 filed Critical 北京金风科创风电设备有限公司
Publication of WO2020199732A1 publication Critical patent/WO2020199732A1/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
    • H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • H02K1/148—Sectional cores
    • 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
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots

Definitions

  • the application relates to the field of motors, and in particular to a stator segment assembly and a generator.
  • the iron core of the stator can be divided into multiple iron core segments in the circumferential direction of itself, and the multiple iron core segments can be spliced sequentially in the circumferential direction to obtain a complete iron core.
  • the iron core segment divided into multiple segments is not provided with coils or only coils that cannot form a complete winding are provided. After the iron core segments are spliced with each other, the coils need to be installed or supplemented, and insulation treatment needs to be supplemented.
  • the present application provides a stator segmented assembly and a generator to improve the assembly efficiency of the stator.
  • an embodiment of the present application provides a stator segment assembly, which includes an iron core segment extending in an arc shape along a first track, and the iron core segment includes a plurality of first racks arranged at intervals along the first track, A groove is formed between adjacent first racks; and coils are wound in two grooves of the core segment separated by a predetermined pitch, and a plurality of coils are arranged on the first track, wherein each iron The multiple coils wound on the core segment are connected to a positive integer number of complete pole windings.
  • each groove includes a bottom area adjacent to the groove bottom of the groove and a top area away from the groove bottom, and each coil includes a first effective side and a second effective side connected to each other.
  • the first effective side and the second effective side of each coil are respectively arranged in two grooves of the core section separated by a predetermined pitch, wherein the first effective side is located in one of the two grooves The bottom area, the second effective edge is located at the top area of the other of the two grooves.
  • the iron core segment has a first end and a second end opposite to each other along the first track.
  • the iron core segment includes a first sub-segment and a second sub-segment. One end extends to the middle of the core section, and the second subsection extends from the second end to the middle of the core section, wherein the bottom area of each groove in the first subsection is provided with the first effective side of the coil and The top area is empty, the top area of each groove in the second subsection is provided with the second effective side of the coil and the bottom area is empty.
  • the iron core segment has a first end and a second end opposite to each other along the first track, the iron core segment is provided with a first splicing portion at the first end, and the iron core segment is at the second end.
  • the end is provided with a second splicing part, and the first splicing part matches the shape of the second splicing part, so that the first end of each iron core segment can be spliced with the second end of another iron core segment.
  • the preset pitch is a full pitch
  • the first splicing portion includes a second rack with the same tooth height as the first rack
  • the second splicing portion includes teeth with the same height as the first rack.
  • the sum of the tooth width of the second rack along the first track and the tooth width of the third rack along the first track is the same as the tooth width of the first rack along the first track.
  • the preset pitch is a short pitch
  • the first splicing portion includes a second rack with the same tooth height as the first rack
  • the second splicing portion includes teeth with the same height as the first rack.
  • the sum of the tooth width of the second rack along the first track and the tooth width of the third rack along the first track is the same as the tooth width of the first rack along the first track.
  • the preset pitch is a short pitch
  • the first splicing portion includes a first notch groove having the same depth as the groove
  • the second splicing portion includes a first notch groove having the same depth as the groove.
  • the splicing structure obtained by splicing the notch groove is the same as the groove shape.
  • the tooth height of the first rack is 5 mm to 250 mm
  • the tooth width of the first rack along the first track is 5 mm to 60 mm.
  • the groove width of the groove along the first track is 5 mm to 60 mm.
  • an embodiment of the present application provides a generator.
  • the generator includes a stator, wherein the stator includes a plurality of stator segment assemblies of any one of the above spliced with each other.
  • the multiple coils wound on each core segment are connected to a positive integer number of complete-pole windings, wherein the complete-pole winding refers to the corresponding to each single pole phase
  • the number of coils included in the winding of a complete pole corresponds to the number of coils corresponding to a single pole phase.
  • each stator segment component can achieve independent functions and can be insulated in advance After the splicing, the installation of the coil is no longer needed, and there is no need to supplement the insulation treatment process for the coil, which improves the assembly efficiency and reliability of the stator.
  • Fig. 1 is a partial structural diagram of a generator provided according to an embodiment of the present application.
  • Figure 2a is a schematic structural diagram of a stator segment assembly provided according to an embodiment of the present application.
  • Figure 2b is a schematic diagram of the splicing structure of the stator segment assembly provided according to an embodiment of the present application
  • Fig. 3a is a schematic structural diagram of a stator segment assembly according to another embodiment of the present application.
  • Fig. 3b is a schematic view of the splicing structure of the stator segmented assembly according to another embodiment of the present application.
  • Figure 4a is a schematic structural diagram of a stator segment assembly according to another embodiment of the present application.
  • Fig. 4b is a schematic diagram of a splicing structure of a stator segment assembly according to another embodiment of the present application.
  • Figure 5a is a schematic structural diagram of a stator segment assembly according to another embodiment of the present application.
  • Fig. 5b is a schematic diagram of a splicing structure of a stator segment assembly provided according to another embodiment of the present application.
  • Figure 6a is a schematic structural diagram of a stator segment assembly according to another embodiment of the present application.
  • Fig. 6b is a schematic diagram of a splicing structure of a stator segment assembly provided according to another embodiment of the present application.
  • 112-groove 112a-bottom area; 112b-top area;
  • the embodiments of the present application provide a stator segment assembly and a generator.
  • the generator can be applied to a wind power generating set.
  • the generator includes a stator, and the stator may be obtained by splicing a plurality of the above-mentioned stator segment components.
  • FIG. 1 is a partial structural diagram of a generator provided according to an embodiment of the present application.
  • the generator includes a stator and a rotor 200 rotatable relative to the stator 100.
  • the rotor 200 includes a rotor support 210 and a permanent magnet 220.
  • the rotor support 210 includes a cylindrical structure, and the permanent magnet 220 is disposed on the circumferential surface of the cylindrical structure of the rotor support 210.
  • the outer rotor type generator is taken as an example for description, that is, the permanent magnet 220 is disposed on the inner circumferential surface of the cylindrical structure of the rotor support 210.
  • the permanent magnet 220 is arranged on the outer circumferential surface of the cylindrical structure of the rotor support 210.
  • the stator 100 may be formed by splicing a plurality of stator segment components.
  • the partial structure diagram of FIG. 1 shows a partial structure of one of the stator segment components of the stator 100.
  • Each stator segment assembly includes an iron core segment 110 that extends along the first track X in an arc shape.
  • Fig. 2a is a schematic structural diagram of a stator segment assembly provided according to an embodiment of the present application, in which the arc-shaped first track X is extended into a straight line for description.
  • the stator segment assembly 100s includes an iron core segment 110 that extends along the first track X in an arc shape.
  • the iron core section 110 includes a plurality of first racks 111 arranged at intervals along the first track X, and a groove 112 is formed between adjacent first racks 111.
  • the groove 112 is formed on the side surface of the core section 110 facing the permanent magnet 220.
  • the stator segment assembly 100s further includes a coil 120, wherein the coil 120 is wound in two grooves 112 of the core section 110 separated by a predetermined pitch, and a plurality of coils 120 are arranged on the first track X.
  • the multiple coils 120 wound on each core segment 110 are connected to a positive integer number of complete pole windings.
  • the winding of a complete pole refers to a winding formed by multiple coils corresponding to each single pole phase, and the number of coils included in the winding of a complete pole corresponds to the number of coils corresponding to a single pole phase.
  • the winding formed by the coil 120 of the stator segment assembly 100s is a three-phase winding as an example for description. Among them, W, V, and U represent three different phases, and are shown on the top of the coil 120 corresponding to each phase.
  • the winding formed by the coil 120 of the stator segment assembly 100s may not be limited to a three-phase winding, and the number of phases of the winding may also be 4, 5, 6, and other numbers.
  • the multiple coils 120 wound on each core segment 110 are connected to a positive integer number of complete pole windings.
  • multiple stator segment assemblies 100s can be spliced sequentially along the circumference of the stator 100 to obtain a complete stator 100.
  • Each stator segment assembly 100s includes windings that can realize independent functions.
  • the insulation treatment can be completed in advance, the installation of the coil is no longer required after splicing, and there is no need to supplement the insulation treatment process for the coil, which improves the assembly efficiency and reliability of the stator 100.
  • each groove 112 includes a bottom area 112a adjacent to the groove bottom of the groove 112 and a top area 112b away from the groove bottom in the radial direction.
  • Each coil 120 includes a first effective side 121 and a second side connected to each other. Two effective edges 122, the first effective edge 121 and the second effective edge 122 of each coil 120 are respectively arranged in two grooves 112 of the core section 110 separated by a predetermined pitch, wherein the first effective edge 121 is located at two The bottom area 112 a of one groove 112 of the two grooves 112, and the second effective edge 122 is located at the top area 112 b of the other groove 112 of the two grooves 112.
  • stator segment assembly 100s including distributed double-layer windings has a larger number of grooves 112, a larger heat dissipation area of the coil 120, and a lower winding temperature compared to the stator segment assembly of concentrated windings.
  • the armature reacts to the magnetic field The harmonic content is small, and the eddy current loss of the permanent magnet 220 is small.
  • the coils 120 included in each stator segment assembly 100 are of the same type, that is, the first effective side 121 is located at the bottom area 112a of one groove 112, and the second effective side 122 is located at the other.
  • the multiple coils 120 have a uniform arrangement rule, so that only the same kind of coils need to be arranged, and there is no need to design more kinds of coils in the process of assembling the stator, which reduces process complexity and improves reliability.
  • the core section 110 has opposite first ends E1 and second ends E2 along the first track X.
  • the core section 110 includes a first subsection 110a, a second subsection 110b, and an intermediate subsection 110c,
  • the first subsection 110a extends from the first end E1 to the middle of the core section 110
  • the second subsection 110b extends from the second end E2 to the middle of the core section 110
  • the middle subsection 110c is located between the first subsection 110a and the second subsection 110a.
  • the core section 110 may not be provided with an intermediate subsection 110c, but the first subsection 110a and the second subsection 110b are directly connected.
  • each groove 112 in the first sub-segment 110a is provided with the first effective side 121 of the coil 120 and the top area 112b is empty, and the top area 112b of each groove 112 in the second sub-segment 110b The second effective side 122 of the coil 120 is provided and the bottom area 112a is empty.
  • Fig. 2b is a schematic diagram of a splicing structure of a stator segment assembly provided according to an embodiment of the present application. When every two adjacent stator segment assemblies 100s are spliced, the first end E1 of one stator segment assembly 100s is connected to the E2 of the other stator segment assembly 100s.
  • a part of the top area 112b and/or bottom area 112a of the groove 112 is empty, that is, at the splicing position of each adjacent stator segment assembly 100s, the groove
  • the empty positions of the top area 112b and/or the bottom area 112a of 112 are reserved, and the coils 120 of the same phase in the multiple stator segment assemblies 100s may be connected in parallel or in series.
  • the core section 110 is provided with a first splicing portion 113 at the first end E1, and the core section 110 is provided with a second splicing portion 114 at the second end E2, the first splicing portion 113 and the second splicing portion
  • the shape of 114 is matched, so that the first end E1 of each core segment 110 can be spliced with the second end E2 of another core segment 110.
  • the windings formed on the stator segment assembly 100s are three-phase windings with slots per pole and phase 1, and the preset pitch is short as an example.
  • the preset pitch is denoted as y
  • the number of stator slots is denoted as Q
  • the number of pole pairs is denoted as p.
  • y ⁇ Q/2p it is called short-distance winding
  • the preset pitch y is 2.
  • the first splicing portion 113 includes a first notch groove 117 having the same depth as the groove 112 and the second splicing portion 114 includes a first notch groove 117 having the same depth as the groove 112.
  • the width of the first notched groove 117 along the first track X is equal to The sum of the groove width of the second notch groove 118 along the first track X may be the same as the groove width of the groove 112 along the first track X, so that the first notch groove 117 of each iron core section 110 and the other iron core section 110
  • the splicing structure obtained by splicing the second notch slot 118 of the second slot 118 has the same shape as the groove 112, which makes the stator 100 obtained by splicing multiple stator segment assemblies 100s more integrated.
  • the first splicing part 113 and the second splicing part 114 of this embodiment are splicing parts with an open slot shape, which can further improve the mechanical strength of the stator segment assembly 100s at the first end E1 and the second end E2, and reduce the The deformation of the first splicing part 113 and the second splicing part 114 during splicing ensures the safety of the obtained stator and generator.
  • Fig. 3a is a schematic structural diagram of a stator segment assembly provided according to another embodiment of the present application
  • Fig. 3b is a schematic view of a splicing structure of a stator segment assembly provided according to another embodiment of the present application, in which the arc-shaped first track X is shown in a straight line for explanation.
  • the winding formed by the coil 120 of the stator segment assembly 100s is a three-phase winding with a number of slots per pole per phase and a short pitch with a preset pitch, where W, V , U represent three different phases, and are marked on the top of the coil 120 corresponding to each phase.
  • the preset pitch y is 5.
  • the stator segment assembly 100s includes an iron core segment 110 and a coil 120.
  • the iron core segment 110 extends in an arc along the first track X.
  • the iron core segment 110 includes a plurality of first racks 111 arranged at intervals along the first track X.
  • a groove 112 is formed between adjacent to the first rack 111.
  • the coil 120 is wound in the two grooves 112 of the core section 110 separated by a predetermined pitch y, and a plurality of coils 120 are arranged on the first track X.
  • the multiple coils 120 wound on each iron core segment 110 are connected to a positive integer number of complete pole windings.
  • Each groove 112 includes a bottom area 112a adjacent to the groove bottom of the groove 112 and a top area 112b away from the groove bottom in the radial direction.
  • Each coil 120 includes a first effective side 121 and a second effective side 122 connected to each other.
  • the first effective side 121 and the second effective side 122 of each coil 120 are respectively disposed in two grooves 112 of the core section 110 separated by a predetermined pitch y, wherein the first effective side 121 is located in the two grooves
  • the bottom area 112 a of one of the grooves 112 in 112, and the second effective side 122 is located at the top area 112 b of the other groove 112 of the two grooves 112.
  • the iron core section 110 has a first end E1 and a second end E2 opposite to each other along the first track X.
  • the iron core section 110 includes a first subsection 110a, a second subsection 110b, and an intermediate subsection 110c.
  • 110a extends from the first end E1 to the middle of the core section 110
  • the second subsection 110b extends from the second end E2 to the middle of the core section 110
  • the middle subsection 110c is located between the first subsection 110a and the second subsection 110b between.
  • each groove 112 in the first sub-segment 110a is provided with the first effective side 121 of the coil 120 and the top area 112b is empty, and the top area 112b of each groove 112 in the second sub-segment 110b The second effective side 122 of the coil 120 is provided and the bottom area 112a is empty.
  • the first end E1 of one stator segment assembly 100s is connected to the E2 of the other stator segment assembly 100s.
  • a part of the top area 112b and/or bottom area 112a of the groove 112 is empty, that is, at the splicing position of each adjacent stator segment assembly 100s, the groove
  • the empty positions of the top area 112b and/or the bottom area 112a of 112 are reserved, and the coils 120 of the same phase in the multiple stator segment assemblies 100s may be connected in parallel or in series.
  • the core section 110 is provided with a first splicing portion 113 at the first end E1, and the core section 110 is provided with a second splicing portion 114 at the second end E2, the first splicing portion 113 and the second splicing portion
  • the shape of 114 is matched, so that the first end E1 of each core segment 110 can be spliced with the second end E2 of another core segment 110.
  • the first splicing portion 113 includes a second rack 115 with the same tooth height as the first rack 111, and the second splicing portion 114 includes a tooth that is the same as the first rack 111.
  • the sum of the tooth width of the second rack 115 along the first trajectory X and the tooth width of the third rack 116 along the first trajectory X is the same as that of the first rack 111 along the first trajectory X
  • the tooth width is the same, so that the splicing structure of the second rack 115 of each core segment 110 and the third rack 116 of the other core segment 110 has the same shape as the first rack 111, so that multiple stator segments
  • the integrality of the stator 100 obtained by splicing the components 100s is stronger.
  • the preset pitch y is used as a short distance for description, where the first splicing portion 113 and the second splicing portion 114 may be splicing portions in the shape of an open slot, or splicing portions in the shape of a rack. Therefore, the stator segment assembly 100s can provide sufficient insulation performance for the coil 120, and the assembly reliability is improved.
  • the preset pitch y is a full pitch, the stator segment assembly 100s may still include the first splicing portion 113 and the second splicing portion 114, and the first splicing portion 113 and the second splicing portion 114 are teeth.
  • the strip-shaped splicing part avoids damage to the winding integrity after the splicing of adjacent stator segment assemblies 100s.
  • the winding formed by the coil 120 of the stator segment assembly 100s may not be limited to a three-phase winding, and the number of phases of the winding may also be 4, 5, 6, and other numbers.
  • Fig. 4a is a schematic structural diagram of a stator segment assembly provided according to another embodiment of the present application
  • Fig. 4b is a schematic view of a splicing structure of a stator segment assembly provided according to another embodiment of the present application, in which the arc-shaped first track X is shown in a straight line for explanation.
  • the winding formed by the coil 120 of the stator segment assembly 100s is a six-phase winding with a slot number per pole per phase and a short pitch with a preset pitch, where W1, W2 , V1, V2, U1, and U2 represent six different phases, and are marked on the top of each corresponding coil 120.
  • the preset pitch y is 5. .
  • the stator segment assembly 100s includes an iron core segment 110 and a coil 120.
  • the iron core segment 110 extends in an arc along the first track X.
  • the iron core segment 110 includes a plurality of first racks 111 arranged at intervals along the first track X.
  • a groove 112 is formed between adjacent to the first rack 111.
  • the coil 120 is wound in the two grooves 112 of the core section 110 separated by a predetermined pitch y, and a plurality of coils 120 are arranged on the first track X.
  • the multiple coils 120 wound on each iron core segment 110 are connected to a positive integer number of complete pole windings.
  • stator segment assemblies 100s can be spliced sequentially along the circumference of the stator 100 to obtain a complete stator 100.
  • Each stator segment assembly 100s includes windings that can realize independent functions.
  • the insulation treatment can be completed in advance, the installation of the coil is no longer required after splicing, and there is no need to supplement the insulation treatment process for the coil, which improves the assembly efficiency and reliability of the stator 100.
  • Each groove 112 includes a bottom area 112a adjacent to the groove bottom of the groove 112 and a top area 112b far away from the groove bottom.
  • Each coil 120 includes a first effective side 121 and a second effective side 122 connected to each other.
  • the first effective side 121 and the second effective side 122 of the coil 120 are respectively arranged in two grooves 112 of the core section 110 separated by a predetermined pitch y, wherein the first effective side 121 is located in the two grooves 112
  • the bottom area 112 a of one of the grooves 112, and the second effective edge 122 is located at the top area 112 b of the other groove 112 of the two grooves 112.
  • the iron core section 110 has a first end E1 and a second end E2 opposite to each other along the first track X.
  • the iron core section 110 includes a first subsection 110a, a second subsection 110b, and an intermediate subsection 110c.
  • 110a extends from the first end E1 to the middle of the core section 110
  • the second subsection 110b extends from the second end E2 to the middle of the core section 110
  • the middle subsection 110c is located between the first subsection 110a and the second subsection 110b between.
  • each groove 112 in the first sub-segment 110a is provided with the first effective side 121 of the coil 120 and the top area 112b is empty, and the top area 112b of each groove 112 in the second sub-segment 110b The second effective side 122 of the coil 120 is provided and the bottom area 112a is empty.
  • the first end E1 of one stator segment assembly 100s is connected to the E2 of the other stator segment assembly 100s.
  • a part of the top area 112b and/or bottom area 112a of the groove 112 is empty, that is, at the splicing position of each adjacent stator segment assembly 100s, the groove
  • the vacant positions of the top area 112b and/or the bottom area 112a of 112 are reserved. After splicing, the vacant positions no longer require coil installation.
  • the coils 120 of the same phase in the multiple stator segment assemblies 100s can be connected in parallel or in series.
  • the iron core section 110 is provided with a first splicing portion 113 at the first end E1, and the iron core section 110 is provided with a second splicing portion 114 at the second end E2.
  • the first splicing portion 113 includes a second rack 115 with the same tooth height as the first rack 111
  • the second splicing portion 114 includes the same tooth height as the first rack 111.
  • the sum of the tooth width of the second rack 115 along the first trajectory X and the tooth width of the third rack 116 along the first trajectory X is the same as that of the first rack 111 along the first trajectory X
  • the tooth width is the same, so that the splicing structure of the second rack 115 of each core segment 110 and the third rack 116 of the other core segment 110 has the same shape as the first rack 111, so that multiple stator segments
  • the integrality of the stator 100 obtained by splicing the components 100s is stronger.
  • Fig. 5a is a schematic structural diagram of a stator segment assembly provided according to another embodiment of the present application
  • Fig. 5b is a schematic view of the splicing structure of a stator segment assembly provided according to another embodiment of the present application, in which the arc-shaped first track X is shown in a straight line for explanation.
  • the winding formed by the coil 120 of the stator segment assembly 100s is a three-phase winding with the number of slots per pole per phase of 1, and the preset pitch y as an integral pitch, where W, V and U represent three different phases, and are shown on the top of the coil 120 corresponding to each type.
  • the preset pitch y is 3.
  • the stator segment assembly 100s includes an iron core segment 110 and a coil 120.
  • the iron core segment 110 extends in an arc along the first track X.
  • the iron core segment 110 includes a plurality of first racks 111 arranged at intervals along the first track X.
  • a groove 112 is formed between adjacent to the first rack 111.
  • the coil 120 is wound in the two grooves 112 of the core section 110 separated by a predetermined pitch y, and a plurality of coils 120 are arranged on the first track X.
  • the multiple coils 120 wound on each iron core segment 110 are connected to a positive integer number of complete pole windings.
  • stator segment assemblies 100s can be spliced sequentially along the circumference of the stator 100 to obtain a complete stator 100.
  • Each stator segment assembly 100s includes windings that can realize independent functions.
  • the insulation treatment can be completed in advance, the installation of the coil is no longer required after splicing, and there is no need to supplement the insulation treatment process for the coil, which improves the assembly efficiency and reliability of the stator 100.
  • Each groove 112 includes a bottom area 112a adjacent to the groove bottom of the groove 112 and a top area 112b far away from the groove bottom.
  • Each coil 120 includes a first effective side 121 and a second effective side 122 connected to each other.
  • the first effective side 121 and the second effective side 122 of the coil 120 are respectively arranged in two grooves 112 of the core section 110 separated by a predetermined pitch y, wherein the first effective side 121 is located in the two grooves 112
  • the bottom area 112 a of one of the grooves 112, and the second effective edge 122 is located at the top area 112 b of the other groove 112 of the two grooves 112.
  • the iron core section 110 has a first end E1 and a second end E2 opposite to each other along the first track X.
  • the iron core section 110 includes a first subsection 110a, a second subsection 110b, and an intermediate subsection 110c.
  • 110a extends from the first end E1 to the middle of the core section 110
  • the second subsection 110b extends from the second end E2 to the middle of the core section 110
  • the middle subsection 110c is located between the first subsection 110a and the second subsection 110b between.
  • each groove 112 in the first sub-segment 110a is provided with the first effective side 121 of the coil 120 and the top area 112b is empty, and the top area 112b of each groove 112 in the second sub-segment 110b The second effective side 122 of the coil 120 is provided and the bottom area 112a is empty.
  • the winding formed by the coil 120 of the stator segment assembly 100s has a preset pitch y as a full-pitch winding, and its winding coefficient is higher, so that the coil 120 is used more.
  • the first end E1 of one stator segment assembly 100s is connected to the E2 of the other stator segment assembly 100s.
  • a part of the top area 112b and/or bottom area 112a of the groove 112 is empty, that is, at the splicing position of each adjacent stator segment assembly 100s, the groove
  • the empty positions of the top area 112b and/or the bottom area 112a of 112 are reserved, and the coils 120 of the same phase in the multiple stator segment assemblies 100s may be connected in parallel or in series.
  • the multiple coils 120 have a uniform arrangement rule, so that only the same type of coil needs to be arranged, and there is no need to design more types of coils in the process of assembling the stator, which reduces process complexity and improves reliability.
  • the core section 110 is provided with a first splicing portion 113 at the first end E1, and the core section 110 is provided with a second splicing portion 114 at the second end E2, the first splicing portion 113 and the second splicing portion
  • the shape of 114 is matched, so that the first end E1 of each core segment 110 can be spliced with the second end E2 of another core segment 110.
  • the first splicing portion 113 includes a second rack 115 with the same tooth height as the first rack 111, and the second splicing portion 114 includes a tooth that is the same as the first rack 111.
  • the sum of the tooth width of the second rack 115 along the first trajectory X and the tooth width of the third rack 116 along the first trajectory X is the same as that of the first rack 111 along the first trajectory X
  • the tooth width is the same, so that the splicing structure of the second rack 115 of each core segment 110 and the third rack 116 of the other core segment 110 has the same shape as the first rack 111, so that multiple stator segments
  • the integrality of the stator 100 obtained by splicing the components 100s is stronger.
  • the sum of the number of empty grooves 112 in the top area 112b and the number of empty grooves 112 in the bottom area 112a remains the same as the preset pitch y.
  • the winding formed by the coil 120 is a three-phase winding with a preset pitch y of a full pitch, which can avoid damage to the integrity of the winding after the splicing of adjacent stator segment assemblies 100s.
  • the winding formed by the coil 120 of the stator segment assembly 100s is not limited to a three-phase winding, and the number of phases may be other numbers.
  • Fig. 6a is a schematic structural diagram of a stator segment assembly provided according to another embodiment of the present application
  • Fig. 6b is a schematic view of a splicing structure of a stator segment assembly provided according to another embodiment of the present application, in which the arc-shaped first track X is shown in a straight line for explanation.
  • the winding formed by the coil 120 of the stator segment assembly 100s is a six-phase winding with the number of slots per pole and each phase of 1, and the preset pitch y is a full pitch, where W1, W2, V1, V2, U1, and U2 represent six different phases, and are marked on the top of each corresponding coil 120.
  • the preset pitch y is 6.
  • the stator segment assembly 100s includes an iron core segment 110 and a coil 120.
  • the iron core segment 110 extends in an arc along the first track X.
  • the iron core segment 110 includes a plurality of first racks 111 arranged at intervals along the first track X.
  • a groove 112 is formed between adjacent to the first rack 111.
  • the coil 120 is wound in the two grooves 112 of the core section 110 separated by a predetermined pitch y, and a plurality of coils 120 are arranged on the first track X.
  • the multiple coils 120 wound on each iron core segment 110 are connected to a positive integer number of complete pole windings.
  • Each groove 112 includes a bottom area 112a adjacent to the groove bottom of the groove 112 and a top area 112b far away from the groove bottom.
  • Each coil 120 includes a first effective side 121 and a second effective side 122 connected to each other.
  • the first effective side 121 and the second effective side 122 of the coil 120 are respectively arranged in two grooves 112 of the core section 110 separated by a predetermined pitch y, wherein the first effective side 121 is located in the two grooves 112
  • the bottom area 112 a of one of the grooves 112, and the second effective edge 122 is located at the top area 112 b of the other groove 112 of the two grooves 112.
  • the core section 110 has a first end E1 and a second end E2 opposite to each other along the first track X.
  • the core section 110 includes a first subsection 110a and a second subsection 110b.
  • 110a is connected to the second sub-segment 110b.
  • the first sub-segment 110 a extends from the first end E1 to the middle of the core segment 110
  • the second sub-segment 110 b extends from the second end E2 to the middle of the core segment 110.
  • each groove 112 in the first subsection 110a is provided with the first effective edge 121 of the coil 120 and the top area 112b is empty, and the top area 112b of each groove 112 in the second subsection 110b is provided with The second active side 122 of the coil 120 and the bottom area 112a are vacant.
  • stator segment assembly 100s every time two adjacent stator segment assemblies 100s are spliced, the first end E1 of one stator segment assembly 100s is connected to the E2 of the other stator segment assembly 100s.
  • the empty positions of the top area 112b and/or the bottom area 112a of the groove 112 are reserved, and the coils 120 of the same phase in the multiple stator segment assemblies 100s can be connected in parallel Or connected in series.
  • the iron core section 110 is provided with a first splicing portion 113 at the first end E1, and the iron core section 110 is provided with a second splicing portion 114 at the second end E2.
  • the first splicing portion 113 includes a second rack 115 with the same tooth height as the first rack 111
  • the second splicing portion 114 includes a third rack 116 with the same tooth height as the first rack 111.
  • the second rack The sum of the tooth width along the first trajectory X of 115 and the tooth width of the third rack 116 along the first trajectory X is the same as the tooth width of the first rack 111 along the first trajectory X, so that the first
  • the splicing structure obtained by splicing the two racks 115 with the third rack 116 of the other iron core segment 110 has the same shape as the first rack 111, so that the stator 100 obtained by splicing multiple stator segment assemblies 100s is more integrated.
  • the sum of the number of empty grooves 112 in the top area 112b and the number of empty grooves 112 in the bottom area 112a remains the same as the preset pitch y.
  • the winding formed by the coil 120 is a six-phase winding with a preset pitch y of a full pitch, which can avoid damage to the integrity of the winding after the splicing of adjacent stator segment assemblies 100s.
  • the tooth height of the first rack 111 described above is 5 mm to 250 mm
  • the tooth width of the first rack 111 along the first track X is 5 mm to 60 mm.
  • the groove width of the aforementioned groove 112 along the first track X is 5 mm to 60 mm.
  • the stator segmented assembly 100s spliced by the stator has sufficient performance while making it more compact, which further improves the stator segment assembly. 100s of transportation convenience.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Windings For Motors And Generators (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

L'invention concerne un ensemble stator segmenté et un générateur d'énergie. L'ensemble stator segmenté comprend : un segment de noyau s'étendant le long d'un premier trajet sous la forme d'un arc et comprenant de multiples premiers râteliers d'engrenage disposés à des intervalles le long du premier trajet, des évidements étant formés entre des premiers râteliers d'engrenage adjacents ; et une bobine enroulée à l'intérieur de deux évidements du segment de noyau espacés selon un pas prédéfini, de multiples bobines étant agencées sur le premier trajet, les multiples bobines enroulées autour de chaque segment de noyau étant connectées pour former un nombre entier positif d'enroulements complets. L'ensemble stator segmenté et le générateur d'énergie selon les modes de réalisation de la présente invention peuvent améliorer l'efficacité de l'ensemble et la fiabilité des stators.
PCT/CN2020/072980 2019-04-02 2020-01-19 Ensemble stator segmenté et générateur d'énergie WO2020199732A1 (fr)

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CN201910261210.9 2019-04-02
CN201910261210.9A CN111769659A (zh) 2019-04-02 2019-04-02 定子分段组件及发电机

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CN202111540U (zh) * 2011-06-14 2012-01-11 天津市津郊电机配件有限公司 分段式定子铁芯
CN203261141U (zh) * 2013-04-12 2013-10-30 佛山市顺德万和电气配件有限公司 交流电动机的定子
CN107240968A (zh) * 2016-04-04 2017-10-10 深圳华引动力科技有限公司 一种带单相绕组的定子铁芯
JP2018102122A (ja) * 2016-12-20 2018-06-28 ダイキン工業株式会社 回転電気機械
CN108604844A (zh) * 2015-12-22 2018-09-28 日立汽车系统工程株式会社 定子和旋转电机

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US7081697B2 (en) * 2004-06-16 2006-07-25 Visteon Global Technologies, Inc. Dynamoelectric machine stator core with mini caps
CN108667179A (zh) * 2018-05-23 2018-10-16 中科盛创（青岛）电气股份有限公司 分瓣铁心定子双层绕组结构及其安装方法
CN108599520A (zh) * 2018-06-22 2018-09-28 博众精工科技股份有限公司 多动子动磁式分段控制直线电机系统
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Publication number Priority date Publication date Assignee Title
CN202111540U (zh) * 2011-06-14 2012-01-11 天津市津郊电机配件有限公司 分段式定子铁芯
CN203261141U (zh) * 2013-04-12 2013-10-30 佛山市顺德万和电气配件有限公司 交流电动机的定子
CN108604844A (zh) * 2015-12-22 2018-09-28 日立汽车系统工程株式会社 定子和旋转电机
CN107240968A (zh) * 2016-04-04 2017-10-10 深圳华引动力科技有限公司 一种带单相绕组的定子铁芯
JP2018102122A (ja) * 2016-12-20 2018-06-28 ダイキン工業株式会社 回転電気機械

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