WO2023031231A1 - Procédé de bobinage d'un stator de machine électrique tournante à multi-encoches par pôle et par phase - Google Patents
Procédé de bobinage d'un stator de machine électrique tournante à multi-encoches par pôle et par phase Download PDFInfo
- Publication number
- WO2023031231A1 WO2023031231A1 PCT/EP2022/074133 EP2022074133W WO2023031231A1 WO 2023031231 A1 WO2023031231 A1 WO 2023031231A1 EP 2022074133 W EP2022074133 W EP 2022074133W WO 2023031231 A1 WO2023031231 A1 WO 2023031231A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- winding
- phase
- notch
- pitch
- notches
- Prior art date
Links
- 238000004804 winding Methods 0.000 title claims abstract description 247
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000004020 conductor Substances 0.000 claims abstract description 99
- 239000011295 pitch Substances 0.000 claims description 99
- 230000008569 process Effects 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 230000000750 progressive effect Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000002441 reversible effect Effects 0.000 description 5
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 239000007858 starting material Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 210000000078 claw Anatomy 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
- H02K3/28—Layout of windings or of connections between windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/08—Forming windings by laying conductors into or around core parts
- H02K15/085—Forming windings by laying conductors into or around core parts by laying conductors into slotted stators
-
- 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
- TITLE PROCEDURE FOR WINDING A STATOR OF A ROTATING ELECTRIC MACHINE WITH MULTI-SLOTS BY POLE AND
- the present invention relates to a method for winding a stator of a rotating electrical machine with multiple slots per pole and per phase, as well as to the corresponding wound stator.
- the invention finds a particularly advantageous application for a stator of a rotating electrical machine such as for example an alternator, an alternator-starter, a reversible machine or an electric motor of a vehicle or a drone.
- rotating electrical machines comprise a stator and a rotor secured to a shaft.
- the rotor may be integral with a driving and/or driven shaft.
- the electric machine comprises a casing carrying the stator. This casing is also configured to carry the shaft of the rotor in rotation, for example via bearings.
- the stator comprises a body consisting of a stack of sheet metal sheets as well as a winding of the phases received in notches of the stator which are open radially.
- the phases are generally three in number for a three-phase machine or six for a six-phase machine.
- each phase winding comprises a spiral conductor, each turn of which forms undulations traversing the notches of the body.
- the conductor has axial strands located inside the notches of the stator and connecting strands located alternately on each side of the stator interconnecting axial strands.
- the conductor may be formed from one or more electrically conductive wires.
- the set of connecting strands extending from one side of the stator forms a winding bun.
- the phase windings each have a phase input and output corresponding respectively to a first and a second end of a phase winding.
- the phase inputs and outputs are intended to be interconnected to perform a coupling (delta, star, or hybrid of the delta-star type or other) of the different phases of the electrical machine.
- a winding method is known in which all of the phase windings are wound at the same time and in parallel in the corresponding notches of the body of the stator to obtain a six-phase winding.
- FIG 1 in order to transform a six-phase winding into a multi-slot three-phase winding per pole and per phase, it is necessary to make junctions J1 -J3 between phase windings to go from six windings of phase PH1 -PH6 three phase winding.
- Such a transformation of a six-phase winding into a multi-slot three-phase winding per pole and per phase makes it possible to obtain a performance and cost compromise between a three-phase winding and a six-phase winding. Indeed, the winding obtained is more economical than a six-phase winding due to the reduction in the number of electronic components, while being more efficient than a three-phase winding.
- an interconnector INT is generally used providing the connections between the inputs and the outputs of the phases between them.
- an interconnector induces an additional cost, additional assembly steps to connect the phase inputs and outputs to said interconnector, as well as an increase in the size at the level of a winding bun of the stator due to the presence of the interconnector.
- the invention aims to effectively remedy the aforementioned drawbacks by proposing a method for winding a polyphase stator with multiple slots per pole and per phase, said stator comprising slots intended to receive conductors of a winding, said winding comprising a number N of phase windings, said method comprising at least the following steps to produce each phase winding:
- the invention thus makes it possible, by ensuring a continuous connection between the turns of a phase winding, to propose an economical solution compared to a similar winding where the connection between the turns is obtained by means of an interconnector.
- the invention also makes it possible to obtain a compact stator by avoiding the integration of an additional component close to a bun.
- the invention also has the advantage of reducing airflow and magnetic noise compared to a standard three-phase machine.
- the invention also makes it possible to attenuate certain harmonics of the rotating electrical machine.
- free notch means a notch which does not include a conductor during a given step of the winding process, it being understood that once the winding process is completed, all the notches include conductors.
- continuously means a connection made directly by the driver himself. No additional system such as an interconnector or a weld is necessary to make the electrical connection between the turns.
- the winding has multiple phase windings so that N is greater than or equal to 2.
- the at least one portion of at least one first turn of a continuous conductor is wound in a first direction of winding and the at least a portion of at least a second turn of said DC conductor is wound in a second winding direction opposite to the first winding direction.
- the first winding step comprises the winding of an integer number M of turns of the continuous conductor to form a first coil
- the second winding step comprises the winding of an integer number M' of turns of said continuous conductor to form a second coil
- M and M' are whole numbers strictly greater than 1.
- each winding step includes the winding of a single turn.
- the phase windings are wound simultaneously or one after the other.
- the method comprises several steps of applying a special notch pitch and several winding steps following the basic notch pitch, each application step being preceded by a winding step and followed by another winding step, the turns of said phase winding obtained by the winding steps being continuously interconnected by said continuous conductor.
- the basic notch pitch equal to the number of notches per pole and per phase multiplied by the number of phases N.
- the special notch pitch is equal to the basic notch pitch minus k or to the basic notch pitch plus k, k being an integer greater than or equal to 1.
- the special notch pitch is identical for all application steps.
- the winding is a three-phase winding with two notches per pole and per phase.
- the winding is a three-phase winding with 3 slots per pole and per phase.
- the special notch pitch is decreasing so that the first special notch pitch is equal to the basic notch pitch minus k and the following special notch pitches are respectively equal to the previous special notch pitch minus k, or the special notch pitch is progressive so that the first special notch pitch is equal to the basic notch pitch plus k and the notch pitches subsequent specials are equal to the previous special notch pitch plus k, respectively, where k is an integer greater than or equal to 1.
- a basic notch pitch is applied equal to the number of notches per pole and per phase multiplied by the number of phases, i.e. a basic notch pitch equal to 9 notches, no special notches used during the application steps being respectively equal to the number of notches per pole and per phase multiplied by the number of phases minus 1, i.e. 8 notches then the number of notches per pole and per phase multiplied by the number of phases minus 2 or 7 slots.
- the winding is a three-phase winding with 4 notches per pole and per phase.
- a basic notch pitch is applied equal to the number of notches per pole and per phase multiplied by the number of phases, i.e. a basic notch pitch equal to 12 notches, no special notches used during the application steps corresponding respectively to the number of notches per pole and per phase multiplied by the number of phases minus 1, i.e. 1 1 notches then the number of notches per pole and per phase multiplied by the number of phases minus 2 or 10 slots then the number of slots per pole and per phase multiplied by the number of phases minus 3 or 9 slots.
- At least one special notch pitch is equal to the basic notch pitch minus k and at least one other special notch pitch is equal to the basic notch pitch plus k , k being an integer greater than or equal to 1 .
- the winding is a three-phase winding with 1 slot plus 2 half-slots per pole and per phase.
- a basic notch pitch is applied equal to two notches per pole and per phase multiplied by the number of phases, i.e. a basic notch pitch equal to 6 notches, pitches of special slots used before a change in winding direction respectively equal to the number of slots per pole and per phase multiplied by the number of phases minus 1, i.e. 5 slots then the number of slots per pole and per phase multiplied by the number of phases plus 1 or 7 slots, then the number of slots per pole and per phase multiplied by the number of phases plus 1 or 7 slots.
- the winding is a three-phase winding with 4 half-slots per pole and per phase.
- a basic notch pitch is applied equal to two notches per pole and per phase multiplied by the number of phases, i.e. a basic notch pitch equal to 6 notches, pitches of special slots used before a change in winding direction respectively equal to the number of slots per pole and per phase multiplied by the number of phases plus 1, i.e. 7 slots then the number of slots per pole and per phase multiplied by the number of phases minus 1 or 5 slots then the number of slots per pole and per phase multiplied by the number of phases plus 1 or 7 slots.
- k is equal to 1.
- the number of winding steps is equal to the number of winding turns.
- a continuous conductor of a phase winding is formed by a single continuous wire or by a bundle of at least two continuous wires.
- the invention also relates to a polyphase stator with multiple slots per pole and per phase, said stator comprising a winding comprising a number N of phase windings and being wound according to the winding method previously described and slots receiving conductors of the winding, said winding comprising for each phase winding:
- the winding has at least one notch receiving continuous conductors belonging to several phase windings or in that all the notches of the winding only house continuous conductors belonging to the same phase winding.
- the at least a portion of at least a first turn of a continuous conductor is wound in a first winding direction and the at least a portion of at least a second turn of said continuous conductor is wound in a second winding direction opposite to the first winding direction.
- the invention further relates to a rotating electrical machine comprising a stator as defined above.
- the rotating electrical machine forms an alternator or an alternator-starter or a reversible machine or an electric motor.
- Figure 1 illustrates, for a stator shown in flat projection, a three-phase winding configuration with two consecutive notches per pole and per phase without the present invention, therefore requiring an interconnector in order to connect the conductors present in two consecutive notches;
- Figure 2 is a perspective view of an example of a wound stator according to the present invention.
- FIG. 3a] [Fig. 3b] [Fig. 3c] [Fig. 3d] [Fig. 3rd] [Fig. 3f] [Fig. 3g] [Fig. 3h]
- Figures 3a to 3h illustrate, for a stator shown in flat projection, the various stages of production of a three-phase winding with two consecutive notches per pole and per phase;
- Figure 4 illustrates, for a stator shown in flat projection, a three-phase winding configuration with three consecutive notches per pole and per phase;
- Figure 5 illustrates, for a stator shown in flat projection, a three-phase winding configuration with four consecutive notches per pole and per phase
- Figure 6 illustrates, for a stator shown in flat projection, a three-phase winding configuration with one slot plus two half-slots per pole and per phase;
- Figure 7 illustrates, for a stator shown in flat projection, a three-phase winding configuration with four half-slots per pole and per phase;
- Figure 8 is a perspective view of two coils forming a phase winding made from a continuous conductor
- Figure 9 is a top view of a coil of a phase winding made in a distributed wave configuration.
- FIG. 2 is a perspective view of a wound stator 10 of a rotating electrical machine which mainly comprises a body 11 in which are mounted several phase windings PH1, PH2, PH3 forming an electrical winding.
- the rotating machine is for example an alternator, alternator-starter, a reversible machine or an electric traction motor.
- This machine is preferably intended to be implemented in a vehicle such as a motor vehicle or a drone.
- an alternator-starter is a rotating electric machine capable of working in a reversible manner, on the one hand, as an electric generator in alternator function, and on the other hand as an electric motor, in particular for starting the heat engine of the motor vehicle. .
- the machine (not shown) comprises a box on which a voltage converter such as an inverter or a rectifier bridge can be mounted. Inside this case, it further comprises a shaft, a rotor integral in rotation with the shaft and a stator 10. In this example, the stator is arranged to surround the rotor. The rotational movement of the rotor takes place around an X axis.
- the rotor comprises, for example, a body formed by a stack of sheet metal sheets held in the form of a package by means of a suitable fixing system, such as rivets passing axially through the rotor right through.
- the rotor has poles formed for example by permanent magnets housed in cavities formed in the magnetic mass of the rotor.
- the poles are formed by coils wound around the arms of the rotor.
- the rotor may be a claw rotor comprising two pole wheels. Each pole wheel is formed of a plate oriented transversely, of a plurality of claws forming magnetic poles and of a cylindrical core.
- the rotor has a coil wound around the core.
- the stator body 11 has an annular cylindrical shape with axis X and consists of an axial stack of flat sheets.
- the body 1 1 comprises teeth 12 distributed angularly in a regular manner on an internal circumference of a yoke 13. These teeth 12 delimit two by two notches 15.
- the yoke 13 corresponds to the solid annular portion of the body 1 1 which is extends between the bottom of the notches 15 and the outer periphery of the body 11.
- the notches 15 emerge axially on either side of the body 11.
- the notches 15 are also open radially here in the inner face of the body 11.
- the stator 10 comprises 36 notches in order to facilitate understanding of the invention.
- the stator 10 has no teeth to facilitate the insertion of the conductors during the winding step.
- the stator may include teeth feet to improve the electrotechnical performance of the machine.
- Insulators 16 are arranged in the notches 15 in order to provide electrical insulation between the conductors of the winding and the stator body 11.
- the stator 10 To form the winding of the stator 10, a number N of phase windings corresponding to the number of phases of the electric machine are installed in the slots 15 of the body 11.
- the "three-phase" stator 10 comprises three phase windings PH1, PH2, PH3.
- the invention is however applicable to stators comprising a different number of phase windings.
- Each phase winding PH1, PH2, PH3 consists of a corresponding continuous conductor C1, C2, C3 bent in the form of a serpentine and wound inside the stator in the slots 15 to form a plurality of turns.
- a conductor C1, C2, C3 thus has axial strands 18 located in a series of notches 15 associated with a given phase winding PH1, PH2, PH3 as well as connecting strands 19a, 19b located alternately on each axial side of the stator body 11 and interconnecting the axial strands 18. All of the connecting strands 19a, 19b extending from one side of the body form a winding bun.
- the notches 15 of a series are separated from each other by a pitch of notches defined in more detail below.
- the winding of several concentric turns makes it possible to wind the complete phase.
- a turn corresponds to the winding of a conductor C1, C2, C3 on a stator turn 10.
- each conductor C1, C2, C3 may comprise a single continuous wire or a bundle of F continuous conductor wires, F being greater than or equal to 2.
- the wires may have a round section.
- the wires may have a rectangular, square section, or a flat shape.
- the wires may have axial strands 18 having a different shape from the connecting strands 19a, 19b.
- the axial strands 18 may have a rectangular, square, or flat-shaped cross-section to optimize the filling of the notches 15, while the connecting strands 19a, 19b have a round-shaped cross-section to facilitate the conformation of the winding buns.
- the conductors C1, C2, C3 are preferably made of a metallic material covered with enamel. The metallic material is preferably copper but could alternatively be aluminum or any other material suitable for the application.
- the method of winding a polyphase stator 10 with multi-slots per pole and per phase comprises at least the following steps to produce each phase winding PH1, PH2, PH3:
- - a step of winding at least a portion of at least a first turn Sp1 of a continuous conductor C1, C2, C3 following a pitch of basic notches P_b, while providing notches at the beginning of the first turn free between two slots 15 intended to be filled by two continuous conductors C1, C2, C3 of two adjacent phase windings PH1, PH2, PH3, - a step of applying a different special notch pitch P_r, and in particular here less than the basic notch pitch P_b to finalize the at least one first turn, so that the continuous conductor C1, C2, C3 d a given phase winding PH1, PH2, PH3 is inserted inside a free notch 15 adjacent to a notch 15 in which said continuous conductor C1, C2, C3 of said phase winding PH1, PH2, PH3 is also inserted ,
- the three-phase stator 10 comprises three phase windings PH1, PH2, PH3.
- Each phase winding PH1, PH2, PH3 consists of a corresponding conductor C1, C2, C3.
- the conductors C1, C2, C3 may each consist of a continuous wire or a bundle of at least two continuous wires.
- the stator body 11 has 36 notches and 3 pairs of poles.
- the conductors C1, C2, C3 are inserted into three separate slots 15. In this case, the conductors C1, C2, C3 are inserted simultaneously into the notches 15. Alternatively, the conductors C1, C2, C3 can be inserted one after the other.
- the portion of a conductor C1, C2, C3 located inside a notch corresponds to an axial strand 18.
- the ends of the conductors C1, C2, C3 which protrude from the body 11 and located at the level of the marks A, B, C correspond to the phase inputs E1, E2, E3 of the phase windings PH1, PH2, PH3.
- Two notches 15 respectively containing an adjacent phase winding are spaced apart by a notch left free in order to allow the subsequent insertion of the conductors C1, C2, C3 during the second turn Sp2.
- the conductors C1, C2, C3 are inserted inside every other notch.
- the conductors C1, C2, C3 are inserted into the slots numbered respectively 14, 16, and 18.
- the conductors C1, C2, C3 are then bent to form connecting strands 19a here of substantially triangular shape, which protrude axially from the same side of the body 11.
- Axial strands 18 of conductors C1, C2, C3 are then each inserted into a notch following a basic notch pitch P_b separating two adjacent notches from a series of notches 15 associated with a turn of a phase winding PH1, PH2, PH3.
- connecting strands 19b which protrude axially from a side opposite that of the connecting strands 19a.
- the connecting strands 19a, 19b are located outside the body 11 alternately on one side or the other of the body 11. All of the connecting strands 19a, 19b projecting from the same side body 1 1 forms a winding bun.
- the conductors C1, C2, C3 are inserted inside the odd notches numbered 13, 15, and 17.
- the winding direction is then changed in a direction K2 circumferentially opposite to the first direction K1 to achieve a second turn Sp2 using the basic notch pitch P_b.
- the first winding direction K1 may for example be clockwise and the second winding direction K2 may be counterclockwise or vice versa.
- the second turn Sp2 is made following the pitch of basic notches P_b up to the marks G, H, I. To simplify FIG. 3c, the first turn is not shown.
- We again change the winding direction along the direction K1 to form a third turn Sp3 by taking the basic notch pitch P_b equal at 2N 6.
- the third turn Sp3 is wound up to the marks J, K, L following the pitch of basic notches P_b. To simplify FIG. 3e, the previous turns are not shown.
- the winding direction is again changed in the direction K2.
- a fourth turn Sp4 is then formed up to the marks M, N, O where the winding is stopped.
- the ends of the conductors C1, C2, C3 located at the level of the marks M, N, O correspond to the phase outputs S1, S2, S3 of the phase windings PH1, PH2, PH3.
- FIG. 3h illustrates the winding obtained at the end of the method for which each conductor C1, C2, C3 has been represented with a different type of line.
- This winding is of the nested distributed wavy type. It is observed that each phase winding PH1, PH2, PH3 associated with a corresponding conductor C1, C2, C3 crosses two 15 consecutive notches. A winding with two notches per pole and per phase is thus obtained without any junction between the turns insofar as one and the same continuous conductor C1, C2, C3 has been used to form each phase winding PH1, PH2, PH3.
- phase inputs E1 -E3 and the phase outputs S1 -S3 of the winding are in this example grouped together in the same area. This makes it possible to simplify their connection with the voltage converter. At least one phase end of each phase winding is electrically connected to the voltage converter in order to circulate an electric current in the winding of the stator 10. It will thus be possible to easily achieve a coupling of the phase windings PH1, PH2, PH3 delta, star or according to a hybrid coupling of the triangle-star type or other.
- FIG. 4 illustrates the production of a three-phase winding with 3 turns with 3 slots per pole and per phase.
- a basic notch pitch P_b equal to the number of notches per pole and per phase multiplied by the number of phases is applied, ie a basic notch pitch P_b equal to 9 notches.
- the special notch pitches P_r used before a change in winding direction K1 , K2 are respectively equal to the number of notches per pole and per phase multiplied by the number of phases minus 1, i.e. 8 notches then the number of notches per pole and per phase multiplied by the number of phases minus 2, i.e. 7 slots.
- FIG. 5 illustrates the production of a three-phase winding with 4 turns with 4 slots per pole and per phase.
- a basic notch pitch P_b equal to the number of notches per pole and per phase multiplied by the number of phases is applied, ie a basic notch pitch P_b equal to 12 notches.
- the footsteps of special slots P_r used before a change in winding direction K1 , K2 are respectively equal to the number of slots per pole and per phase multiplied by the number of phases minus 1, i.e. 1 1 slots then the number of slots per pole and per phase multiplied by the number of phases minus 2, i.e. 10 notches, then the number of notches per pole and per phase, multiplied by the number of phases minus 3, i.e. 9 notches.
- FIG. 6 illustrates the production of a three-phase winding with 4 turns with 1 notch plus 2 half-notches per pole and per phase.
- half-notch is meant the fact that a notch is occupied by two conductors C1, C2, C3 associated with two windings of different phases PH1, PH2, PH3.
- a basic notch pitch P_b equal to two notches per pole and per phase multiplied by the number of phases is applied, ie a basic notch pitch P_b equal to 6 notches.
- the special notch pitches P_r used before a change in winding direction K1 , K2 are respectively equal to the number of notches per pole and per phase multiplied by the number of phases minus 1, i.e.
- FIG. 7 illustrates the production of a three-phase winding with 4 turns with 4 half-slots per pole and per phase.
- a basic notch pitch P_b equal to two notches per pole and per phase multiplied by the number of phases is applied, ie a basic notch pitch P_b equal to 6 notches.
- the special notch pitches P_r used before a change in winding direction K1 , K2 are respectively worth the number of notches per pole and per phase multiplied by the number of phases plus 1 i.e. 7 notches then the number of notches per pole and per phase multiplied by the number of phases minus 1 i.e. 5 notches then the number of notches per pole and per phase multiplied by the number of phases plus 1 i.e. 7 notches.
- the winding with several notches per pole and per phase by making several winding turns before applying a no special notches.
- said winding can be made by forming a first coil on a support, then shifting one notch pitch to apply the notch pitch special P_r and finally to wind a second reel.
- the two coils are connected by wire continuity and are inserted into the stator package.
- the method comprises a step of winding an integer number M of turns Sp1 -SpM of a continuous conductor C1, C2, C3 along the first winding direction K1 to form a first coil 21 .1 .
- the method includes a step of winding an integer M' of turns Sp1 -SpM' along said second direction of winding K2 to form a second coil 21.2.
- the numbers of turns M, M' of each coil 21 .1 , 21 .2 may be equal or different.
- Each coil 21 .1 , 21 .2 may comprise a number of turns for example between 2 and 10.
- the coils 21 .1 , 21 .2 may be obtained by winding a continuous conductor C1 , C2 following the same winding direction K1 , K2 or in different directions.
- the first coil 21.1 and the second coil 21.2 form the phase winding PH1. This process is repeated for the other phases of the winding.
- the special notch pitch P_r is applied between the first coil 21.1 and the second coil 21.2 of the phase winding PH1, PH2, PH3.
- the first coil 21.1 and the second coil 21.2 of a given phase winding PH1, PH2, PH3 are continuously connected together by the DC conductor C1, C2, C3.
- each coil 21 .1 , 21 .2 may in a first assembly step be formed flat, that is to say that the turns Sp1 -SpM ; Sp1 -SpM' each extend in a plane substantially perpendicular to axis A.
- Each coil 21.1, 21.2 comprises a superposition of identical turns in the form of regular stars with axis A, axis A being coaxial with axis X of the machine.
- Sp1-SpM coils; Sp1-SpM' of each coil 21.1, 21.2 are made according to the pitch of basic notches P_b.
- the two coils 21 .1 , 21 .2 are interconnected continuously given that the same continuous conductor C1 , C2, C3 is used to make these two coils.
- the portion 22 thus corresponds to the portion of the continuous conductor C1, C2, C3 providing the continuous electrical connection between the two coils 21.1, 21.2.
- the phase winding PH1, PH2, PH3 is mounted on the stator body 11 by deformation. More precisely, the winding is positioned in the notches 15 of the body 11 by progressive twisting of the axial strands 18 axially from front to back and by simultaneous tilting of all the axial strands 18 from a direction perpendicular to the axis A towards a direction parallel to said axis A. This deformation is for example obtained by sliding an insertion block not shown here.
- the insertion is carried out so that the two coils 21.1, 21.2 are inserted inside notches 15 different.
- the connecting portion 22 makes it possible to obtain the offset between the notches of the two coils 21.1, 21.2, via the application of the special notches pitch P_r. It will thus be possible to easily obtain a wound stator 10 with two notches per pole and per phase by an offset obtained by applying a special notch pitch P_r between the two coils 21.1, 21.2.
- phase windings can thus be mounted successively one after the other in the stator body 11.
- the invention is also applicable for mounting methods in which at least two windings, or even all the windings, are mounted simultaneously in the stator body 11.
- a coil 21.1, 21.2 can be made in simple corrugated as shown in Figure 8, that is to say that the connecting strands are arranged alternately on either side of the stator body 1 1.
- the upper connecting strands 19a and the lower connecting strands 19b of the same coil 21.1, 21.2 are angularly offset around the axis A.
- the angular offset is carried out in such a way that each connecting strand 19a, 19b is placed in the free space between two successive connecting strands 19a, 19b of a previous corrugation of a conductor C1, C2, C3.
- winding steps previously described can be performed in situ directly on the stator body 11.
- the winding steps could be performed on a spindle then the winding obtained on the spindle is transferred inside the notches 15 of the stator body 11.
- the present invention finds advantageous applications in the field of stators for alternators or reversible machines, but it could also be applied to any type of rotating machine.
- the foregoing description has been given by way of example only and does not limit the scope of the present invention, which would not be departed from by replacing the various elements with any other equivalents.
- the invention is applied to an electric winding comprising more than three phases such as for example five, six, or seven phases.
- the invention will not be departing from the scope of the invention by increasing or decreasing the number of phases of the stator 10.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Windings For Motors And Generators (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280059263.2A CN117897885A (zh) | 2021-09-01 | 2022-08-30 | 用于缠绕每极每相具有多个槽的旋转电机定子的方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FRFR2109127 | 2021-09-01 | ||
FR2109127A FR3126567A1 (fr) | 2021-09-01 | 2021-09-01 | Procédé de bobinage d'un stator de machine électrique tournante à multi-encoches par pôle et par phase |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023031231A1 true WO2023031231A1 (fr) | 2023-03-09 |
Family
ID=78212262
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/074133 WO2023031231A1 (fr) | 2021-09-01 | 2022-08-30 | Procédé de bobinage d'un stator de machine électrique tournante à multi-encoches par pôle et par phase |
Country Status (3)
Country | Link |
---|---|
CN (1) | CN117897885A (fr) |
FR (1) | FR3126567A1 (fr) |
WO (1) | WO2023031231A1 (fr) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1236119A (en) * | 1969-02-20 | 1971-06-23 | Aeg Elotherm Gmbh | A polyphase two-layer wave winding for barwound electromagnetic pumps and conveyor troughs |
WO2001054254A1 (fr) * | 2000-01-20 | 2001-07-26 | Robert Bosch Gmbh | Procede de production d'un noyau a excitation magnetique comprenant un enroulement de noyau, destine a une machine electrique |
WO2003012292A1 (fr) * | 2001-07-31 | 2003-02-13 | Aloys Wobben | Installation d'energie eolienne a generatrice annulaire |
EP3790169A1 (fr) * | 2018-06-06 | 2021-03-10 | Changyingxinzhi Technology Co., Ltd. | Enroulement décalé à enroulement ondulé continu à fil plat et stator le comprenant |
-
2021
- 2021-09-01 FR FR2109127A patent/FR3126567A1/fr active Pending
-
2022
- 2022-08-30 WO PCT/EP2022/074133 patent/WO2023031231A1/fr active Application Filing
- 2022-08-30 CN CN202280059263.2A patent/CN117897885A/zh active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1236119A (en) * | 1969-02-20 | 1971-06-23 | Aeg Elotherm Gmbh | A polyphase two-layer wave winding for barwound electromagnetic pumps and conveyor troughs |
WO2001054254A1 (fr) * | 2000-01-20 | 2001-07-26 | Robert Bosch Gmbh | Procede de production d'un noyau a excitation magnetique comprenant un enroulement de noyau, destine a une machine electrique |
WO2003012292A1 (fr) * | 2001-07-31 | 2003-02-13 | Aloys Wobben | Installation d'energie eolienne a generatrice annulaire |
EP3790169A1 (fr) * | 2018-06-06 | 2021-03-10 | Changyingxinzhi Technology Co., Ltd. | Enroulement décalé à enroulement ondulé continu à fil plat et stator le comprenant |
Also Published As
Publication number | Publication date |
---|---|
CN117897885A (zh) | 2024-04-16 |
FR3126567A1 (fr) | 2023-03-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR2852461A1 (fr) | Stator pour machine dynamo-electriques | |
EP1974443A1 (fr) | Procede pour realiser un stator de machine electrique tournante et agencement de conducteurs sur un support | |
FR2868620A1 (fr) | Induit polyphase pour machine electrique tournante, notamment un alternateur pour vehicule automobile, et son procede de fabrication | |
EP1829192B1 (fr) | Methode d'insertion d'un bobinage dans un stator de machine electrique tournante polyphasee, et stator associe | |
EP3166210B1 (fr) | Machine electrique tournante muni d'un stator | |
FR3093386A1 (fr) | Stator de machine électrique tournante | |
EP1726079B1 (fr) | Methode d'insertion d'un bobinage ondule dans un stator de machine electrique tounante polyphasee et son stator associe | |
FR2862818A1 (fr) | Stator pour machine dynamoelectrique | |
FR3033456B1 (fr) | Procede de bobinage d'un stator de machine electrique tournante et stator bobine correspondant | |
EP2095487A2 (fr) | Stator d'une machine electrique tournante polyphasee, machine electrique tournante polyphasee comportant un tel stator et procede de realisation d'un tel stator | |
EP4066358A1 (fr) | Stator de machine électrique tournante avec bobinage asymétrique | |
WO2023031231A1 (fr) | Procédé de bobinage d'un stator de machine électrique tournante à multi-encoches par pôle et par phase | |
EP2078332B1 (fr) | Rotor a griffes muni d'éléments ferromagnetiques interpolaires de largeur optimisée et machine tournante equipée d'un tel rotor | |
WO2020002827A1 (fr) | Machine électrique tournante ayant une configuration de rotor réduisant les ondulations de couple | |
WO2018134523A1 (fr) | Stator bobiné pour machine électrique tournante | |
WO2018083406A1 (fr) | Stator de machine electrique tournante muni de bobines a enroulement orthocyclique | |
EP3429064B1 (fr) | Procédé de bobinage amélioré d'un stator de machine electrique tournante et stator bobiné correspondant | |
FR3048567A1 (fr) | Stator de machine electrique tournante muni d'un bobinage a au moins un enroulement de phase masque | |
WO2023062313A1 (fr) | Procédé de fabrication et stator de machine électrique tournante avec bobinage asymétrique | |
WO2021013743A1 (fr) | Stator bobiné pour une machine électrique tournante | |
FR3128075A1 (fr) | Procédé de fabrication et stator de machine électrique tournante avec bobinage asymétrique | |
EP4160880A1 (fr) | Moteur électrique, stator pour moteur électrique et procédé de fabrication associé | |
WO2023285755A1 (fr) | Stator de machine électrique tournante et procédé de fabrication | |
FR3083651A1 (fr) | Stator bobine pour une machine electrique tournante | |
WO2023285754A1 (fr) | Stator de machine électrique tournante et procédé de fabrication |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22769977 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202447014554 Country of ref document: IN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202280059263.2 Country of ref document: CN |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 22769977 Country of ref document: EP Kind code of ref document: A1 |