• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The subject of the invention is a rotating electrical machine (1), in particular with flux switching, comprising a stator (6) and a rotor (3), the machine (1) being able to generate a magnetic excitation flux, the stator (6) comprising: - a stator body (2) comprising a plurality of notches (8), each notch (8) being delimited by two teeth (9), - an armature winding (10) comprising portions coil (10a, 10b) housed in the plurality of notches (8), the armature winding (10) forming a plurality of armature windings (11), each winding being wound around a tooth (9). ), - a set of permanent magnets (12), at least one magnet (12) of the assembly being housed in one of the notches (8) and being configured to generate an adjustment magnetic flux passing through both teeth (9) delimiting said notch (8) to adjust the magnetic excitation flux.
    公开号:FR3033957A1
    申请号:FR1552149
    申请日:2015-03-16
    公开日:2016-09-23
    发明作者:Philippe-Siad Farah；Jean-Claude Mipo；Ibrahim Afinowi；Zi-Qiang Zhu
    申请人:Valeo Equipements Electriques Moteur SAS；
    IPC主号:
    专利说明:

    [0001] The invention relates in particular to a rotating electrical machine, in particular with flux switching.
    [0002] In particular, the invention relates to an alternator for motor vehicles, including an alternator-starter for hybrid and electric vehicles. Patent FR 2898439 discloses a flux-switched rotating electrical machine comprising a stator having a plurality of notches, a notch being configured to house either a portion of an excitation coil and a permanent magnet, or a portion of an armature winding. The present invention aims at enabling the realization of a rotating electrical machine having a small footprint, a better performance while simplifying its design. The subject of the invention is thus a rotating electrical machine, in particular with flux switching, comprising a stator and a rotor, the machine being able to generate a magnetic excitation flux, the stator comprising: a stator body comprising a plurality of notches, each notch being delimited by two teeth, 20 - an armature winding comprising winding portions accommodated in the plurality of notches, the armature winding forming a plurality of armature windings, each winding armature wound around a tooth, - a set of permanent magnets, at least one magnet of the assembly being housed in one of the notches and being configured to generate an adjustment magnetic flux passing through the two teeth delimiting said notch to adjust the magnetic excitation flux. Such a machine offers a small footprint, in particular by the absence of notches dedicated to the generation of magnetic excitation flux. Such magnetic flux adjustment makes it possible to achieve a magnetic bias, which improves the performance of the machine. Preferably, the permanent magnet is arranged so that the adjustment magnetic flux forms a closed magnetic flux looping on the permanent magnet in a plane orthogonal to the axis of rotation of the machine. The magnetic adjustment flux may circulate around the coil portion housed in the notch receiving the magnet. The magnetic adjustment flux can circulate only in the stator. The magnetic adjustment flux can flow in both the stator teeth and the stator yoke. The stator may have an even number of notches.
    [0003] Preferably, the stator comprises the same number of permanent magnets as notches, each notch comprising at least one permanent magnet, in particular a single permanent magnet. In a variant, the machine may comprise a number of notches equal to 2N and N notches comprise at least one permanent magnet.
    [0004] Preferably, the machine can be configured so that every second notch has at least one permanent magnet. The machine can be configured so that the permanent magnets have the same polarity. Preferably, each notch comprises a winding portion of a first armature winding and a winding portion of a second armature winding. Preferably, each tooth of the stator comprises at least one armature winding wound around said tooth. Alternatively, the machine can be configured so that one tooth out of two comprises at least one armature winding wound around said tooth. The winding portions of the armature windings may be located radially inside the notch and the permanent magnet may be located radially outside the notch. Preferably, the permanent magnet is arranged so that it closes the notch.
    [0005] Preferably, in a plane orthogonal to the axis of rotation of the rotor, one encounters successively towards the axis of rotation, the stator yoke, the bottom of the notch, the armature windings, the permanent magnet, the opening of the notch and the rotor. Alternatively, in a plane orthogonal to the axis of rotation of the rotor, one encounters successively towards the axis of rotation, the rotor, the opening of the notch, the permanent magnet, the windings of the rotor. induced, the bottom of the notch and the breech of the stator. Preferably, the permanent magnet comprises two magnetic poles and is arranged so that it is at least partially in contact with one of the teeth by one of its magnetic poles and in contact at least partially with the other of the teeth by its other magnetic pole. When the magnet is in contact with the tooth, there may be a gap between the tooth and the tooth. This game facilitates the insertion of the magnet into the notch. In addition, when the magnet is in contact with the tooth, there may be a gap between the magnet and the tooth, the clearance being related to manufacturing tolerances. Preferably, each tooth is in contact with one of its walls, with one of the magnetic poles of the permanent magnet housed in the first adjacent notch and with the same magnetic pole of the permanent magnet housed in the other adjacent notch.
    [0006] Preferably, the machine comprises an alternation of teeth in contact with the north poles of the magnets housed in adjacent notches and teeth in contact with the south poles of the magnets housed in adjacent notches. Preferably, the permanent magnets are housed in recesses formed in the teeth of the stator.
    [0007] Preferably, the permanent magnet is configured to generate at least a portion of the excitation magnetic flux. Such an arrangement allows a simplification of the machine, in particular by the absence of excitation winding, the permanent magnet having the dual function of generating the magnetic flux of adjustment to achieve the magnetic bias 30 of generating the magnetic flux of excitation.
    [0008] Preferably, the permanent magnet is configured such that said portion of the magnetic excitation flux coming from the permanent magnet comprises a closed magnetic flux that is looped on the permanent magnet and passing through the rotor. Preferably, said closed magnetic flux passes through the end of the teeth 5 without passing through the stator yoke. Preferably, the machine is arranged to allow the circulation of a direct current in the armature winding for generating at least a portion of the magnetic excitation flux. Such an arrangement permits an increase in the maximum torque of the machine. In addition, such a machine makes it possible, with the aid of the magnetic adjustment flux, to modulate the magnetic excitation flux generated by the direct current flowing in the armature winding, so that the magnetic saturation is reduced.
    [0009] Preferably, the machine is configured so that said part of the excitation magnetic flux coming from the flow of the direct current in the armature winding comprises a closed magnetic flux passing around the winding portions housed in the notch and circulating at both in the stator teeth, in the stator yoke and in the rotor.
    [0010] Preferably, the machine comprises an inverter electrically connected to the armature winding. Preferably, the inverter comprises an arm for generating the direct current flowing in the armature winding. Preferably, the machine comprises an excitation winding for generating at least a part of the excitation magnetic flux, said excitation winding comprising winding portions housed in the plurality of notches, the excitation winding forming a plurality of excitation windings, each excitation winding being wound around a tooth. Such an arrangement makes it possible to increase the maximum torque of the machine.
    [0011] This also makes it possible to use simplified electronics, by using dedicated electronics for direct current and electronics dedicated to alternating current. Finally, this arrangement makes it possible to use an armature winding whose electrical wires are of smaller section. In addition, such a machine makes it possible, with the aid of the magnetic adjustment flux, to modulate the magnetic excitation flux generated by the armature winding, so that the magnetic saturation is reduced. Preferably, the excitation winding is arranged so that said part of the excitation magnetic flux coming from the excitation winding comprises a closed magnetic flux passing around the winding portions housed in the notch and circulating in both the teeth. of the stator, in the stator yoke 10 and in the rotor. Preferably, each notch comprises a winding portion of a first excitation winding and a winding portion of a second excitation winding. Preferably, each stator tooth comprises at least one excitation winding wound around said tooth. Alternatively, the machine can be configured so that one tooth out of two comprises at least one excitation winding wound around said tooth. The winding portions of the first and second excitation windings may be located radially inside the notch and the permanent magnet may be located radially outside the notch. Preferably, in a plane orthogonal to the axis of rotation of the rotor, one encounters successively towards the axis of rotation, the stator yoke, the bottom of the notch, the armature and excitation windings. , the permanent magnet, the opening of the notch and the rotor.
    [0012] Alternatively, in a plane orthogonal to the axis of rotation of the rotor, one encounters successively towards the axis of rotation, the rotor, the opening of the notch, the permanent magnet, the windings of the rotor. induced and exciting, the bottom of the notch and the stator yoke. Preferably, all the excitation windings are connected in series.
    [0013] Preferably, the permanent magnet is configured to generate a portion of the excitation magnetic flux, the machine is arranged to allow the circulation of a DC current in the armature winding for the generation of another portion. the magnetic excitation flux and the machine comprises an excitation winding for generating another part of the magnetic excitation flux, said excitation winding comprising winding portions 5 housed in the plurality of notches, the winding of excitation forming a plurality of excitation windings, each excitation winding being wound around a tooth. Preferably, the permanent magnets include rare earths such as Neodymium-Iron-Boron (NeFeB), Samarium-Iron (SmFe), Samarium-Cobalt (SmCo) magnets. Alternatively, the magnets can be obtained from sintered or bonded ferrites. The magnets may have a substantially rectangular section. The armature winding can be a concentric winding.
    [0014] Preferably, the armature winding comprises a phase. In a variant, the armature winding has a number of phases greater than one. Preferably, armature windings of the same phase of the armature winding are connected in series.
    [0015] The rotor may be of the type of a flux switching machine. The rotor can be rotatably mounted inside the stator. The rotor may include a plurality of flux switching teeth. The rotor may be devoid of winding and permanent magnet. Preferably, the rotor consists only of a bundle of sheets fixed by a fastening means. Preferably, the machine is configured so that: the armature winding comprises three phases, the rotor comprises ten flux switching teeth, and the stator has twelve slots.
    [0016] Preferably, the machine is an alternator or an alternator-starter of a motor vehicle.
    [0017] The invention may be better understood on reading the following detailed description of examples of non-limiting implementation of the invention, and on examining the appended drawing, in which: FIG. 1 schematically and partially shows a rotating electrical machine according to a first embodiment of the invention; - Figure 2 shows, schematically and partially, a detail of a second embodiment of the invention, - Figure 3 shows, schematically and partially, a detail of a third embodiment of the invention; FIG. 4 is a diagrammatic and partial representation of the first embodiment of the invention, and FIG. schematically and partially, a particular arrangement of permanent magnets. FIG. 1 shows a rotary electric machine 1 to 15 flux switching capable of generating a magnetic excitation flux 30 according to a first embodiment of the invention. The rotary electrical machine 1 comprises a stator 6 and a rotor 3 rotatably mounted inside the stator 6 about an axis of rotation X. The rotor 3 can be rotatably connected to a shaft 5 in different ways, for example by force-fitting of the splined shaft 5 inside the central opening of the rotor 3. In the example in question, the rotor 3 comprises a body 7 formed by a stack of sheets of sheet metal held in the form of a package. means of a not shown fastening system, such as rivets axially passing through the rotor 3 from one side to the other.
    [0018] The rotor 3 has ten flux switching teeth 4. The rotor 3 is of the type of a flux switching machine namely that it is here devoid of winding and permanent magnet. In the example considered, the stator 6 comprises: - a stator body 2 having a yoke 13 and twelve notches 8, 30 each notch 8 being delimited by two teeth 9, 3033957 8 - an armature winding 10, in particular of the type concentric, comprising winding portions 10a, 10b housed in the notches 8, the armature winding 10 forming a plurality of armature windings 11, each armature winding 11 being wound around a tooth 9, 5 - a set of permanent magnets 12, comprising in the example in question twelve permanent magnets, a magnet 12 of the assembly being housed in one of the notches 8 and being configured to generate an adjustment magnetic flux passing through the two teeth 9 delimiting said notch 8 to adjust the magnetic excitation flux 30 of the rotating electrical machine 1.
    [0019] In the example considered, the armature winding 10 comprises three phases and is arranged so that armature windings 11 of the same phase of the are connected in series. The phases are then coupled in star or in triangle. In the example shown, the stator 6 comprises the same number of permanent magnets 12 as notches 8, each notch 8 comprising a single permanent magnet 12. Each notch 8 comprises a winding portion 10a of a first winding 12. 11 and a winding portion 10b of a second armature winding 11. Each tooth 9 of the stator 6 comprises at least one armature winding 11 wound around said tooth 9. As can be seen in FIG. the permanent magnet 12 is arranged so that it closes the notch 8. Each permanent magnet 12 has two magnetic poles, namely a north pole N and a south pole S, and is arranged so that it is in position. contact at least partially with one of the teeth 9 by one of its magnetic poles and in contact at least partially with the other of the teeth 9 by its other magnetic pole. In FIGS. 1 to 4, an arrow materializes the direction going from the south pole S to the north pole N of the permanent magnet 12. As shown in FIG. 1, each tooth 9 is in contact with one of its walls, with one of the magnetic poles of the permanent magnet 12 housed in the first adjacent notch 8 and with the same magnetic pole of the permanent magnet 12 housed in the other adjacent notch 8. In the example considered, the electrical machine 1 comprises an alternation of teeth 9 in contact with the north poles N of the magnets 12 housed in adjacent notches 8 and teeth 9 in contact with the south poles S of the magnets 12 housed in notches 8 adjacent. In the example shown in FIG. 1, the machine 1 further comprises an excitation winding 14, in particular of the concentric type, for generating at least a portion 31 of the magnetic excitation flux 30, said excitation winding 14 comprising winding portions 14a, 14b housed in the notches 8, the excitation coil 14 forming a plurality of excitation windings 15, each excitation winding 15 being wound around a tooth 9. In the example As shown, each notch 8 includes a winding portion 14a of a first excitation winding 15 and a winding portion 14b of a second excitation winding 15. Each tooth 9 of the stator 6 comprises at least one winding. excitation 15 wound around said tooth 9. Thus, in the example shown in Figure 1, each notch 8 comprises at 20: - a permanent magnet 12, - a winding portion 14a of a first excitation winding 15 wrapped around one of the teeth 9 adjacent to the notch 8 and a winding portion 14b of a second excitation winding 15 wound around the other of the teeth 9 adjacent to the notch 8, and a winding portion 10a of a first armature winding 11 wound around one of the teeth 9 adjacent to the notch 8 and a winding portion 10b of a second armature winding 11 wound around the other of the teeth 9 adjacent to the notch 8 .
    [0020] In the example shown, in a plane orthogonal to the axis of rotation X of the rotor 3, one encounters successively towards the axis of rotation X, the yoke 13 of the stator 6, the bottom 16 of the notch 8, the armature windings 11 and excitation 15, the permanent magnet 12, the opening 17 of the notch 8 and the rotor 3. In the example shown in Figure 1, the machine 1 comprises a not shown inverter, said inverter being electrically connected to the armature winding 10.
    [0021] FIG. 4 shows a detail of the machine of FIG. 1, in which is shown diagrammatically the magnetic flux in a plane perpendicular to the axis of rotation X. In the detail shown in FIG. has represented two notches 8 of the stator 6.
    [0022] The tooth 9 situated between the two notches 8 of the stator 6 comprises armature windings 11 of the armature winding 10 wound around the tooth 9 as well as windings 15 of the excitation winding 14 wound around the tooth 9. Each notch 8 located on each side of the tooth 9 thus comprises at the same time 15: - a permanent magnet 12 of polarity opposite to the magnet of the notch located on the other side of the tooth 9, - a portion 14b of winding of the same excitation winding 15 of the excitation winding 14, and 20 - a winding portion 10b of the same armature winding 11 of the armature winding 10. As shown in FIG. 4, each magnet 12 is arranged so that the magnetic flux adjustment 20 forms a closed magnetic flux looping on the permanent magnet 12 in a plane orthogonal to the axis of rotation X 25 of the machine. The magnetic adjustment flux 20 flows both around the winding portions 10b and 14b housed in the notch 8 receiving the magnet 12 and in the stator 6. This magnetic adjustment flux 20 does not pass through the gap. It circulates both in the teeth 9 of the stator 6 and in the yoke 13 of the stator 6. In addition, as shown in FIG. 4, the permanent magnet 12 is configured to generate at least a portion 32 of the magnetic flux The excitation magnetic flux portion 30 from the permanent magnet 3033957 11 12 comprises a closed magnetic flux looping on the permanent magnet 12 and passing through the rotor 3. This closed magnetic flux passes through the magnet 12. end of the teeth 9 of the stator 6 without passing through the yoke 13 of the stator 6. It thus passes through the gap between the stator 6 and the rotor 3.
    [0023] Thus, the permanent magnet 12 has the dual function of generating the adjustment magnetic flux 20 to achieve the magnetic bias of generation of the magnetic excitation flux portion 32. Furthermore, as shown in FIG. the machine 1 is arranged to allow the circulation of a direct current, represented by the arrow 40, in the excitation coil 14 for the generation of another part 31 of the magnetic excitation flux 30. The other part 31 of the magnetic excitation flux 30, resulting from the circulation of the direct current in the excitation winding 14 comprises a closed magnetic flux passing around the winding portions 10b, 14b housed in the notch 15 8. This closed magnetic flux circulates both in the teeth 9 of the stator 6, in the yoke 13 of the stator 6 and in the rotor 3. The closed magnetic flux from the other part 31 and passes through the air gap. It should be noted that to simplify the reading of FIG. 4, only the armature and excitation windings 15 wound around the tooth 9 situated between the two notches 8 have been represented even though, as can be seen in FIG. 1, each tooth 9 comprises windings 11, 15. FIG. 2 shows a detail of another embodiment of the electric machine 1, in which the magnetic fluxes are shown diagrammatically in a perpendicular plane. to the axis of rotation X.
    [0024] The electric machine 1 is mainly that already described above with respect to FIGS. 1 and 4, with the difference that the machine 1 does not have an excitation winding. Thus, in the example considered, each notch 8 located on either side of the same tooth 9 comprises a permanent magnet and a winding portion 10b of the same armature winding 11 of the armature winding 10. .
    [0025] Each permanent magnet 12 is arranged to generate at the same time a magnetic flux for adjusting the portion 32 of the magnetic excitation flux 30. In the example under consideration, the magnetic excitation flux 30 is thus solely derived from the magnets. permanent 12.
    [0026] The magnetic excitation and adjustment fluxes 20 each form a closed magnetic flux looping on the permanent magnet 12 in a plane orthogonal to the axis of rotation X of the machine. The magnetic adjustment flux 20 circulates both around the winding portions 10b housed in the notch 8 receiving the magnet 12 and in the stator 6.
    [0027] This magnetic adjustment flux 20 does not pass through the air gap. It circulates both in the teeth 9 of the stator 6 and in the yoke 13 of the stator 6. The magnetic excitation flux 30, 32 flows in the rotor 3. This closed magnetic flux 30, 32 passes through the end of the teeth 9 of the stator 6 without passing through the yoke 13 of the stator 6. It thus passes through the gap between the stator 6 and the rotor 3. In each notch 8, the winding portion 10b of the armature windings 11 is located radially. inside the notch 8 and the permanent magnet 12 is located radially outside the notch. FIG. 3 shows a detail of another exemplary embodiment of the electric machine 1, in which the magnetic fluxes are shown diagrammatically in a plane perpendicular to the axis of rotation X. The electric machine 1 is mainly that already described above with respect to FIG. 3, with the difference that the machine 1 is arranged to allow the circulation of a direct current, represented by the arrow 40, in the armature winding 10 such that this circulation allows the generation of a portion 31 of the magnetic excitation flux 30. Thus, in this example, the magnetic excitation flux 30 comprises a portion 31 resulting from the circulation of a direct current in the armature winding 10 and a part 32 from the permanent magnets 12.
    [0028] The machine 1 is configured so that the portion 31 of the magnetic excitation flux 30 resulting from the flow of the direct current in the armature winding 10 comprises a closed magnetic flux 31 passing around the winding portions 10b housed in the winding. notch 8 and flowing in both the teeth 9 of the stator 6, in the yoke 13 of the stator 6 and in the rotor 3. The portion 31 of the magnetic flux 30 therefore passes through the air gap.
    [0029] In the example considered, the armature winding 10 is a star winding. It should be noted that the section of the wires of the armature winding 10 is larger than the section of the armature winding 10 of the example shown in FIG. 4, since in the example considered in FIG. armature winding 10 allows the circulation of both the armature electric current and the direct current 10 for the generation of a portion 31 of the magnetic excitation flux 30. In the example considered, the machine 1 comprises an inverter , not shown, electrically connected to the armature winding 10. The inverter comprises an arm for the injection of the direct current flowing in the armature winding 10. Alternatively, for the injection of the direct current into the winding 10, while the phases are coupled star with a neutral point, it is possible to control the alternating current from the inverter to the armature winding 10 by managing its positive and negative halfwaves so that it has an average value n we are nil. It should be noted that to simplify the reading of FIGS. 2 and 3, only the armature winding 11 wound around the tooth 9 situated between the two notches 8 has been represented even though, as can be seen in FIG. 1, each tooth 9 comprises an armature winding 11. There is shown in FIG. 5 a particular arrangement of the permanent magnets 12. The permanent magnets 12 are housed in recesses 50 25 formed in the teeth of the stator 9.
    权利要求:
    Claims (15)
    [0001]
    REVENDICATIONS1. Electrical rotating machine (1), in particular with flux switching, comprising a stator (6) and a rotor (3), the machine (1) being able to generate a magnetic excitation flux (30), the stator (6) comprising: - a stator body (2) comprising a plurality of notches (8), each notch (8) being delimited by two teeth (9), - an armature winding (10) comprising winding portions (10a). , 10b) housed in the plurality of notches (8), the armature winding (10) forming a plurality of armature windings (11), each winding (11) being wound around a tooth (9) - a set of permanent magnets (12) each having two magnetic poles (S, N), at least one magnet (12) of the assembly being housed in one of the notches (8) and being configured to generate a magnetic adjustment flux (20) passing through the two teeth (9) delimiting said notch (8) for adjusting the magnetic excitation flux (30).
    [0002]
    2. Machine (1) according to claim 1, the magnetic poles (S, N) of the permanent magnet (12) being arranged so that the magnetic flux 20 adjustment (20) forms a closed magnetic flux looping over the permanent magnet (12) in a plane orthogonal to the axis of rotation (X) of the machine (1).
    [0003]
    3. Machine (1) according to claim 1 or 2, the magnetic poles (S, N) of the permanent magnet (12) being arranged so that the magnetic flux adjustment (20) circulates around the winding portion (10a, 10b) housed in the notch (8) receiving the permanent magnet (12).
    [0004]
    4. Machine (1) according to any one of the preceding claims, the stator (6) having the same number of permanent magnets 30 (12) as notches (8), each notch (8) having at least one magnet permanent (12), in particular a single permanent magnet (12). 3033957 15
    [0005]
    5. Machine (1) according to any one of the preceding claims, each tooth (9) of the stator (6) comprising at least one armature winding (11) wound around said tooth (9). 5
    [0006]
    6. Machine (1) according to any one of the preceding claims, each notch (8) having a winding portion (10a) of a first armature winding (11) and a winding portion (10b) of a second armature winding (11). 10
    [0007]
    7. Machine (1) according to any one of the preceding claims, the winding portions (10a, 10b) of the armature windings (11) being located radially inside the notch (8) and the magnet permanent (12) being located radially outside the notch (8). 15
    [0008]
    8. Machine (1) according to any one of the preceding claims, the permanent magnet (12) being arranged so that it is in contact at least partially with one of the teeth (9) by one of its poles (S, N) and that it is in contact at least partially with the other of the teeth (9) by its other pole (N, S) magnetic.
    [0009]
    9. Machine (1) according to any one of the preceding claims, the rotor (3) having a plurality of flux switching teeth (4), including ten flux switching teeth (4).
    [0010]
    Machine (1) according to any one of the preceding claims, the magnetic poles (S, N) of the permanent magnet (12) being arranged so that at least a portion (32) of the magnetic excitation flux ( 30) is generated by the permanent magnet (12).
    [0011]
    Machine (1) according to claim 10, the magnetic poles (S, N) of the permanent magnet (12) being configured so that said portion (32) of the magnetic excitation flux (30) from the Permanent magnet (12) has a closed magnetic flux (32) looping on the permanent magnet (12) and passing through the rotor (3).
    [0012]
    12. Machine (1) according to any one of the preceding claims, comprising an inverter electrically connected to the armature winding to allow the circulation of a direct current in the armature winding (10) for the generation from to at least a portion (31) of the excitation magnetic flux (30). 10
    [0013]
    13. Machine (1) according to claim 12, wherein the armature winding is configured so that said portion (31) of the excitation magnetic flux (30) resulting from the flow of direct current in the armature winding ( 10) comprises a closed magnetic flux (31) passing around the winding portions housed in the notch (8) and flowing in both the teeth (9) of the stator (6), in the yoke (13) of the stator (6) and in the rotor (3).
    [0014]
    Machine (1) according to one of the preceding claims, comprising an excitation winding (14) for generating at least a portion (31) of the magnetic excitation flux (30), said excitation winding (14). comprising winding portions (14a, 14b) accommodated in the plurality of notches (8), the excitation coil (14) forming a plurality of excitation windings (15), each excitation winding (15). ) being wound around a tooth (9).
    [0015]
    15. Machine (1) according to claim 14, the excitation coil (14) being arranged so that said portion (31) of the magnetic excitation flux (30) from the excitation coil (14) comprises a flux closed magnetic circuit (31) passing around the winding portions housed in the notch and circulating in both the teeth (9) of the stator (6), in the yoke (13) of the stator (6) and in the rotor (3). ).
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    同族专利:
    公开号 | 公开日
    FR3033957B1|2018-06-29|
    引用文献:
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    法律状态:
    2016-03-31| PLFP| Fee payment|Year of fee payment: 2 |
    2016-09-23| PLSC| Search report ready|Effective date: 20160923 |
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    FR1552149A|FR3033957B1|2015-03-16|2015-03-16|ROTATING ELECTRIC MACHINE, IN PARTICULAR FLOW SWITCHING|
    FR1552149|2015-03-16|FR1552149A| FR3033957B1|2015-03-16|2015-03-16|ROTATING ELECTRIC MACHINE, IN PARTICULAR FLOW SWITCHING|
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