JP6528490B2 - Electric rotating machine - Google Patents

Description

  The present invention relates to a rotating electrical machine driven by a magnetic field generated by self-excitation.

  The rotary electric machine is mounted as a drive source in various drive devices. For example, as a vehicle-mounted rotating electrical machine, an IPM motor (Interior Permanent Magnet Motor) is known that can obtain a large output (large torque) by using a magnet torque by a permanent magnet embedded on the rotor side. Such IPM motors have been adopted from a neodymium magnet which has a high residual magnetic flux density and can ensure heat resistance, from the demand for downsizing and high output (high energy density). This neodymium magnet adds expensive rare earths such as Dy (dysprosium) and Tb (terbium), which causes an increase in cost.

  For this reason, in recent rotary electric machines, a winding field synchronous motor has been proposed in which permanent magnets are replaced with electromagnets, and in this winding field synchronous motor, an induced current generated by a rotor side coil is A self-excitation type has been proposed which uses a magnetic current.

  As this self-excitation type winding field synchronous motor (rotary electric machine), for example, as described in Patent Documents 1 and 2, it is more than the basic frequency of the AC drive current supplied to the armature coil on the stator side. A high frequency leakage flux (harmonic flux) is linked to a coil disposed on the rotor side.

  In the rotating electrical machines described in these Patent Documents 1 and 2, by providing the coil on the rotor side, the alternating current induced current generated by the linkage of the leakage flux is rectified by the rectifying element into a direct current field current, and the current is conducted. It is self-excited. Thereby, an electromagnet can be provided on the rotor side, and magnet torque can be used instead of the permanent magnet.

  As described in these Patent Documents 1 and 2, in the case of a rotating electrical machine in which components need to be installed on the rotor side, it is necessary to install components in a structure that can withstand the centrifugal force accompanying high speed rotation of the rotor. There is.

JP, 2010-136524, A JP, 2012-175835, A

  Therefore, the present invention provides a rotating electric machine which can be stably driven by installing the constituent members of the rotating electric machine driven by a magnetic field generated by self-excitation so as to ensure the stabilization of characteristics and durability. The purpose is.

One aspect of the invention of a rotating electrical machine that solves the above problems is a rotating electrical machine including a stator having an armature coil that generates a magnetic flux by energization and a rotor that rotates by passing the magnetic flux, wherein the rotor is A plurality of copoles on which an induction coil for generating an induced current is wound by being interlinked with space harmonic components superimposed on the magnetic flux and arranged on the q-axis, and an electromagnet when the induced current is conducted And a plurality of salient pole parts wound on the d-axis, and fixed to the rotor at an axial end of the rotor, and the axes of the induction coil and the field coil A ring member for securing a space on the end side of the direction, and the supplementary pole portion is connected to the main body portion on which the induction coil is wound and the main body portion, and the adjacent salient pole portions face each other Supported on both sides That a support portion has a, the induction coil, and a resin material is injected into the field coil and the salient pole portion in the slot of the commutating pole portion is positioned, said ring member, said guide It has a plurality of connecting parts for connecting a coil and the field coil by a linear member, and the plurality of connecting parts are arranged in the circumferential direction and arranged on the q-axis .

  As described above, according to one aspect of the present invention, a component of a rotating electrical machine driven by a magnetic field generated by self-excitation is installed so as to ensure stable characteristics and durability, and can be stably driven. An electric machine can be provided.

FIG. 1 is a view showing a rotary electric machine according to an embodiment of the present invention, and is a radial cross-sectional view of a semicircular portion of a circle showing an outline overall configuration thereof. FIG. 2 is a radial cross-sectional view enlarging a part of a circle showing a schematic overall configuration in FIG. FIG. 3 is a circuit configuration diagram of a closed circuit in which an induction coil and a field coil are connected via a diode. FIG. 4 is a circuit configuration diagram to be compared with the circuit of FIG. FIG. 5 is a circuit configuration diagram different from FIG. 4 compared with the circuit of FIG. FIG. 6 is a perspective view showing the overall appearance of the rotary electric machine. FIG. 7 is a graph comparing the connection method of the closed circuit with the induced current value. FIG. 8 is a graph comparing the connection method of the closed circuit with torque characteristics. FIG. 9 is an axial sectional view of the entire rotary electric machine. FIG. 10 is a perspective view showing a state in which the induction coil and the field coil are bound together. FIG. 11 is a perspective view showing a spacer used when binding the induction coil and the field coil. FIG. 12 is a partially enlarged perspective view showing a procedure for binding the induction coil and the field coil. FIG. 13 is a perspective view showing a coil end cover provided with a holder for installing a diode in a closed circuit. FIG. 14 is a plan view showing an inner bottom surface portion of the coil end cover shown in FIG. FIG. 15 is a plan view showing a circuit configuration of a circuit board housed in the coil end cover shown in FIG. 16 is a plan view showing a state in which the circuit board shown in FIG. 15 is accommodated in the coil end cover shown in FIG. FIG. 17 is a partially enlarged perspective view for explaining wire connection by the circuit board of the induction coil and the field coil. FIG. 18 is a perspective view showing a form of a resin mold of a rotor in which a resin is injected and filled in a space such as a rotor slot. FIG. 19 is an exploded front view showing an assembly on the rotor side. FIG. 20 is a perspective view showing a member attached to the axial end of the rotor. FIG. 21 is a view showing another aspect, and is a perspective view showing the structure of the coil end cover.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 to 20 are views for explaining a rotating electrical machine according to an embodiment of the present invention.

  In FIGS. 1 and 2, as described later, the rotating electrical machine 100 has a structure that does not require energy input from the outside to the rotor 21. For example, the performance is suitable for mounting on a hybrid car or an electric car have.

  The rotary electric machine 100 includes a stator (stator) 11 formed in a substantially cylindrical shape, and a rotor (rotor (rotor) fixed to a shaft (rotational shaft) 101 rotating as a drive shaft shown in FIG. And 21). The rotor 21 is configured such that the shaft 101 is inserted into and fixed to the inner cylinder (inner peripheral surface 21 a), and the key groove 106 formed continuously in the axial direction of the outer peripheral surface of the shaft 101 The key projection 26 formed on the inner peripheral surface 21a is fitted in and axially slid and positioned, whereby the shaft 101 is attached so as to be coaxial with the shaft center and integrally rotated.

  The stator 11 has a plurality of poles extending in the radial direction so that the inner peripheral surface 12a side of the outer peripheral surface 22a of the rotor teeth 22 of the rotor 21 closely faces the air gap G via the air gap G. The stator teeth 12 are uniformly arranged in the circumferential direction. Armature coil 14 is formed on stator teeth 12 by concentrated winding of three-phase windings for each phase individually using stator slot 13 which is a space formed between adjacent side surfaces. . The stator teeth 12 function as an electromagnet generating a magnetic flux for rotating the rotor 21 housed facing each other by inputting a three-phase AC drive current to the armature coil 14.

  On the rotor 21, a plurality of rotor teeth (protruding pole portions) 22 which are extended in the radial direction similarly to the stator teeth 12 and formed in a salient pole shape are uniformly arranged in the circumferential direction. The rotor teeth 22 are formed so that the number of the stator teeth 12 in the entire circumferential direction is different from that of the stator teeth 12 so that the outer peripheral surface 22 a faces the inner peripheral surface 12 a of the stator teeth 12 in close proximity.

  As a result, the rotary electric machine 100 generates a magnetic flux by energizing the armature coil 14 in the stator slot 13 of the stator 11, and the magnetic flux is generated from the outer periphery of the rotor teeth 22 facing from the inner peripheral surface 12 a of the stator teeth 12. Interlocking can be performed on the surface 22a. In the rotary electric machine 100, the rotor 21 is relatively rotated by the reluctance torque (main rotational force) to minimize the magnetic path through which the magnetic flux interlinked with the stator teeth 12 passes. As a result, the rotary electric machine 100 can output, as mechanical energy, electrical energy supplied from the shaft 101 that rotates integrally with the rotor 21 that rotates relative to the stator 11 while keeping the axial center in alignment. That is, rotating electrical machine 100 is constructed as a reluctance motor.

  At this time, in the rotary electric machine 100, harmonic components are superimposed on the magnetic flux interlinked from the inner circumferential surface 12a of the stator teeth 12 to the outer circumferential surface 22a of the rotor teeth 22. For this reason, even on the rotor 21 side, an induced current (auxiliary current) is generated in the built-in coil using the change of the magnetic flux density of the harmonic component of the magnetic flux linked from the stator 11 side to obtain an induced electromotive force. it can.

  In detail, only by supplying the driving power of the fundamental frequency to the armature coil 14 of the stator 11, the rotor 21 (the rotor teeth 22) is only rotated by the main magnetic flux that fluctuates at the fundamental frequency. Simply placing a coil on the side does not change the flux linkages and does not produce an induced current.

  On the other hand, a harmonic component is superimposed on the magnetic flux, and the harmonic component interlinks with the rotor teeth 22 from the outer peripheral surface 22a side while temporally changing with a period different from the fundamental frequency. From this, the harmonic component superimposed on the magnetic flux of the fundamental frequency can generate the induced current efficiently by installing the coil in the vicinity of the outer peripheral surface 22 a of the rotor teeth 22. As a result, harmonic fluxes that cause iron loss can be recovered as energy for self-excitation.

  Therefore, in the rotary electric machine 100 of the present embodiment, in the rotor 21 side, the induction coil 27 concentratedly wound around the core core material (pole portion) 25 is accommodated in the rotor slot 23 between the rotor teeth 22 in the rotational direction. Arrange in parallel. In addition, the rotary electric machine 100 is arranged such that the field coils 28 (281, 282) connected in series by concentrated winding form one stage (one unit) in the entire rotor teeth 22.

  The supplementary electrode core member 25 is configured to support the leg portions (support portions) 35 on the opposite side surfaces 22 b of the rotor teeth 22 facing each other. In this manner, the core replacement core member 25 connects and supports the main body portion 31 around which the induction coil 27 is wound with the leg portion 35, and positions and holds the main body portion 31 in the rotor slot 23 between the side surfaces 22b of the rotor teeth 22. ing.

  The main body portion 31 of the supplementary core material 25 extends in parallel with the shaft 101, and faces the both side surfaces 22b of the rotor teeth 22 of the rotor 21 to form a plate shape capable of winding the induction coil 27. It is formed by laminating. The main body portion 31 extends outward in the radial direction of the rotor 21 from the axial center in the rotor slot 23 between the rotor teeth 22, and the induction coil 27 is wound, and the outer end surface 32a of the radial outer end portion 32 The rotor 21 is assembled so as to face the inner peripheral surface 12 a of the stator teeth 12 of the stator 11. The main portion 31 of the core material 25 is formed so that the outer end 32 on the outer peripheral surface side of the rotor 21 is thicker than the axial center side of the rotor 21, and the wound induction coil 27 rotates. It is designed to suppress displacement by centrifugal force at the time. Here, the radially outward direction of the rotor 21 means a direction from the axis toward the outside of the outer peripheral surface on a straight line passing through the axis.

  The leg portion 35 of the core core material 25 is extended in parallel with the shaft 101 and is formed by laminating electromagnetic steel plates. The legs 35 of the supplementary core material 25 are formed in a plate shape extending from the radially inward end 31i of the rotor 21 of the main body 31 toward both side surfaces 22b of the rotor teeth 22. . Further, the leg portion 35 is assembled (coupled) by inserting the tip portion 36 into the support grooves 39 formed in the both side surfaces 22 b of the rotor teeth 22 to support the main portion 31. ing. As a result, the supplementary core material 25 is assembled by inserting and sliding the distal end portion 36 of the leg portion 35 into the support groove 39 of the rotor teeth 22 from the end face side in the rotational axis direction. Here, radially inward of the rotor 21 means a direction from the outer peripheral surface toward the axial center side on a straight line passing the axial center.

  The leg portion 35 of the coextensive core material 25 secures a sufficient strength to support the main body portion 31 and is formed by laminating electromagnetic steel plates whose width is formed as narrow as possible. It is formed in the shape extended | stretched in the rotating shaft direction by the width | variety below thickness of sheet | seat. That is, the leg portion 35 is formed in a plate shape having a small cross-sectional area so as to limit the amount of magnetic flux passing between the main body portion 31 and the rotor teeth 22 as much as possible. It is configured to support in a magnetically independent manner so as to function as a separate pole (spin pole).

  As a result, the amount of magnetic flux passing through the leg portion 35 of the pole core material 25 is limited, and the magnetic flux lines to be passed immediately become dense, so that the rotor 21 is easily magnetically saturated. With such a structure, the magnetic coupling between cogs 25 and rotor teeth 22 can be suppressed, and cogs 25 can be supported in a state sufficiently magnetically separated from rotor teeth 22. . For this reason, it is possible to avoid that the magnetic fluxes linked to each of the rotor teeth 22 and the supplementary pole core material 25 interfere with each other to reduce the generation efficiency of the induced current or the magnetic field, and the rotor 21 can be made large torque. It can be rotated with high efficiency.

  Further, according to this structure, the rotor 21 is a part of the field coil 28 inward of the axial center side of the rotor teeth 22 or the entire rotor teeth 22 before the coercivity core material 25 is supported by the rotor teeth 22. Alternatively, the whole can be wound, and thereafter, the leg portion 35 of the core material 25 can be fitted into and supported by the support groove 39 of the rotor teeth 22.

  At this time, the induction coil 27 may be wound around the main body 31 before or after the rotor teeth 22 support the leg 35 of the supplementary electrode core 25. In addition, the field coil 28 is a first field coil 281 radially inward of the legs 35 of the supplementary electrode core 25 and a radially outer side of the legs 35 of the supplementary core 25. The first and second field coils 281 and 282 are connected in series to constitute a field coil 28. The first and second field coils 281 and 282 are wound around the rotor teeth 22 in a state of being divided into two field coils 282.

  The rotor 21 can be positioned on the outer peripheral surface side of the rotor 21 by winding the induction coil 27 around the main body portion 31 of the core material 25 by supporting the leg 35 of the core material 25 in this manner. . Further, since the leg portion 35 of the core core material 25 is fitted into and supported by the support groove 39 of the rotor teeth 22, the first portion of the field coil 28 is not hampered by the leg portion 35 of the core core material 25. , And second field coils 281 and 282 can be wound around the entire rotor teeth 22. According to the embodiment of the present invention, with such a configuration, the space in the rotor slot 23 is effectively used to efficiently generate an induction current by the induction coil 27, and the induction current is generated by the field coil 28. Can effectively generate a magnetic field.

  When the first and second field coils 281 and 282 of the field coil 28 are wound in one step around the whole of the rotor teeth 22 (both radially inward and radially outward), the auxiliary poles are used. It may be wound in a state in which a space in which the legs 35 of the core material 25 slide in the rotor slot 23 is left. In addition, when the first and second field coils 281 and 282 are respectively wound around the rotor teeth 22 before and after the interpolant core material 25 is supported, the axial center side inner side (radial direction inner side of the rotor teeth 22) Before winding the induction coil 27 around the main body 31 of the supplementary electrode core material 25 after winding the first field coil 281), or in a state where the induction coil 27 is wound around the main body 31, The second field coil 282 may be wound around the outer periphery side (the radial direction outer side) of the rotor teeth 22.

  Then, the induction coil 27 is wound around the cog core material 25 made of electromagnetic steel (magnetic material), thereby enhancing the magnetic permeability and making it possible to interlink the magnetic flux at a high density. Further, the induction coil 27 is positioned on the magnetic path facing the inner circumferential surface 12 a of the stator teeth 12 via the air gap G as small as possible, so that it is possible to interlink more harmonic magnetic fluxes. . The induction coil 27 performs a magnetic field analysis so as to effectively use the third time harmonic component of the magnetic flux linked from the inner peripheral surface 12 a of the stator teeth 12 to the outer peripheral surface 22 a of the rotor teeth 22 and perform harmonics By confirming the magnetic path, it is installed so that the induced current can be generated efficiently. The induction coil 27 is disposed between the rotor teeth 22 so as to secure a necessary and sufficient gap with the field coil 28.

As described above, by adopting the concentrated winding structure, the induction coil 27 and the field coil 28 do not need to be wound around a plurality of slots, and can be miniaturized. Further, in the induction coil 27, while reducing the copper loss on the primary side, the induction current is efficiently generated by the linkage of the third time harmonic flux in the rotational coordinates (dq axis), You can get energy.
Here, the third time harmonics in the rotational coordinates (dq axis) are second harmonics in the stationary coordinates.

  As described above, since the induction coil 27 and the field coil 28 are separately wound around the rotor teeth 22 and the copolar core material 25 so that the magnetic flux paths do not interfere with each other, magnetic interference is suppressed. In addition, the induced current can be generated efficiently.

  The rotary electric machine 100 has a structure that mainly uses the 3f-th-order time harmonic magnetic flux (f = 1, 2, 3...) In the rotational coordinates, “a salient pole portion on the rotor 21 side (rotor teeth 22) Number P: the number S of the stator slots 13 on the stator 11 side is “2: 3”. For example, the third-order time harmonic magnetic flux pulsates in a short cycle because the frequency is higher than the fundamental frequency input to the armature coil 14. Therefore, the rotor 21 can efficiently generate an induced current by changing the strength of the magnetic flux linked to the induction coil 27 between the rotor teeth 22, and the harmonic component superimposed on the magnetic flux of the fundamental frequency is generated. It can be efficiently recovered and rotated as a field energy source.

  Further, as described above, as a structure for determining the quality of the relative magnetic action between the rotor 21 side and the stator 11 side, “the ratio of the number of rotor teeth salient pole P to the number S of stator slots is as follows. The reason why P / S = 2/3 "is adopted is to reduce the electromagnetic vibration and realize a small rotation of the electromagnetic noise.

  In detail, according to the magnetic field analysis of the magnetic flux density distribution, the magnetic flux density distribution is also dispersed in the circumferential direction within the mechanical angle of 360 degrees according to the ratio of the rotor teeth salient pole number P and the number S of stator slots. Uneven distribution will be recognized in the distribution of electromagnetic force that acts on 11.

  On the other hand, in rotating electric machine 100, by adopting a structure of "the number of rotor teeth salient pole P / the number of status lots S = 2/3", uniform density distribution over the entire circumference at a mechanical angle of 360 degrees And the rotor 21 can be rotated in the stator 11 with high quality.

  Thereby, in the rotary electric machine 100, it is possible to suppress the electromagnetic vibration and rotate the motor highly silently, while efficiently recovering the harmonic magnetic flux component as the field energy source.

  As described above, the rotary electric machine 100 efficiently generates an induction current in the induction coil 27 disposed on the q-axis on the rotor 21 side, supplies it as a field current to the field coil 28 disposed on the d-axis, and self-excites Since it can be made to function as an electromagnet, auxiliary rotational force that assists the main rotational force generated by the power supply to the armature coil 14 can be obtained to achieve high efficiency rotation. That is, in the rotary electric machine 100, the q-axis harmonic magnetic flux can also be used as a field energy source, and the mutual inductance coefficient is made higher than the structure in which the copole is not arranged on the q-axis, and the self-excited magnet torque Density can be improved.

  The induction coil 27 is formed in a concentrated winding which is the same winding as the radial direction of the rotor 21 and is arranged in parallel in the circumferential direction of the rotor 21 and connected in parallel. Further, the field coil 28 in which the field coils 281 and 282 are connected in series to form one stage is formed in a concentrated winding in which the adjacent winding turns in a direction opposite to each other with respect to the radial direction of the rotor 21 The both ends of the field coils 281 and 282 connected in series are further connected in series to the outer peripheral side in the circumferential direction of the rotor 21 and the axial center side.

  The induction coil 27 and the field coil 28 constitute a closed circuit 30 (see FIG. 3) together with diodes (rectifying elements) 29A and 29B, with two sets of rotor teeth 22 and rotor slots 23 at adjacent positions being one set. doing.

  In the closed circuit 30, as shown in FIG. 3, two induction coils in which both ends of two field coils 28A and 28B (two sets of field coils 281 and 282) connected in series are connected in parallel. It is connected to the both ends of 27A and 27B via diodes 29A and 29B, respectively.

  Specifically, the closed circuit 30 is concentrated in the same circumferential direction as the first connection end 28p of one of the two field coils 28A and 28B connected in series and concentrated in the opposite circumferential direction. Two first connection ends 27p of two induction coils 27A and 27B wound and connected in parallel are connected at one connection point. In addition, the second connection end 28q opposite to the two field coils 28A and 28B connected in series is connected to the connection pin 29c on the cathode side of both the diodes 29A and 29B, and is connected in parallel. The two second connection ends 27q of the two induction coils 27A, 27B are connected to the connection pin 29c on the anode side of each of the diodes 29A, 29B. That is, the diodes 29A and 29B are packaged in a common cathode type in which the connection pins 29c on the cathode side are connected to each other and exposed to the outside, and the connection pins 29c on the anode side are exposed to the outside as they are .

  The diodes 29A and 29B are connected such that they have a phase difference of 180 degrees, and form a neutral point clamp type full-wave rectification circuit that reverses one of the induced currents and adds up the half-wave rectification output. .

  Thereby, in rotating electric machine 100, the cohesion core material 25 of the high permeability magnetic steel of induction coils 27A, 27B wound is chained from the inner peripheral surface 12a of the stator teeth 12 to the outer peripheral surface 22a side of the rotor teeth 22. The induced current can be efficiently generated by passing the harmonic component superimposed on the intersecting magnetic flux. The alternating current induction currents generated individually in the induction coils 27A and 27B may be rectified by the diodes 29A and 29B and then joined to flow as a direct current field current to the field coils 28A and 28B connected in series. it can. Thus, the field coils 28A, 28B can be effectively self-excited to generate a magnetic field.

  Further, in the rotary electric machine 100, the closed circuit 30 is configured by one set of the induction coils 27A and 27B, the field coils 28A and 28B, and the diodes 29A and 29B, which are adjacent to each other. In the rotary electric machine 100, the induction coils 27A and 27B in the closed circuit 30 are concentrated and wound in parallel in the same circumferential direction, and the field coils 28A and 28B extend in the entire circumferential direction of the rotor 21. It is wound so that the winding directions to be wound toward one another become alternate.

  For this reason, in the rotary electric machine 100, the magnetization directions of the electromagnets generated in the field coils 28A and 28B are alternately alternated in the circumferential direction by the application of the field current, so that the stator teeth 12 of the stator 11 have N poles and S The poles are supposed to face each other alternately. That is, in the rotary electric machine 100, one of the field coils 28A and 28B in each closed circuit 30 functions as a first electromagnet causing the N pole to face the stator 11, and the other of the field coils 28A and 28B is The field coils 28A and 28B are disposed so as to function as a second electromagnet for causing the S pole to face the stator 11 and to function as an electromagnet for causing the same number of N poles or S poles to face each other.

  As a result, since the rotary electric machine 100 is separated for excitation and for the field, it is avoided that the induction coils 27A, 27B and the field coils 28A, 28B interfere with each other to weaken the magnetic field, It can be efficiently recovered as field energy. That is, the rotor teeth 22 constitute salient pole portions around which the field coils 28A and 28B are wound, and the cognition pole core material 25 constitutes a coercion pole around which the induction coils 27A and 27B are wound.

  Further, the rotary electric machine 100 is arranged such that six sets of closed circuits 30 shown in FIG. 3 are arranged in parallel in the circumferential direction of the rotor 21 as shown in FIG. By adopting a structure in which the number of lots S = 2/3 ”, the waveforms of harmonic fluxes linked to the induction coils 27A and 27B of the respective closed circuits 30 can be made common. Therefore, the induction current generated by the induction coils 27A and 27B without phase difference can be supplied to the field coils 28A and 28B as the same level of field current rectified by the diodes 29A and 29B, and the rotor 21 can be efficiently And it can be rotationally driven with high quality.

  With such a circuit configuration, for example, as shown in FIG. 4, all induction coils 27A, 27B and field coils 28A, 28B of the rotor 21 are rectified by two diodes 29A, 29B to make them function as electromagnets respectively. Since the circuit is segmented into six sets for each closed circuit 30 shown in FIG. 3 as compared with the circuit, it is possible to prevent the winding resistance from being integrated and becoming a high resistance value.

  For this reason, for example, in the case where the rotor 21 is rotated at low speed in order to make the vehicle travel at a low speed, the change in the amount of magnetic flux linked to the induction coils 27A, 27B becomes smaller and the induced current generated becomes smaller. However, in the rotary electric machine 100, waste of the winding resistances of the induction coils 27A and 27B and the field coils 28A and 28B is reduced (the limiting resistance value is reduced), and the field coils 28A and 28B are wasted power. It can be excited without wasting. Thus, the magnetic field can be generated efficiently, and the rotational force generated by the armature coil 14 of the stator 11 can be effectively assisted.

  At this time, the induced voltage generated by the induction coils 27A, 27B and the field voltage generated by the field coils 28A, 28B can also be dispersed and suppressed to a low voltage, and copper loss generated by energizing the winding is also It can be reduced. Therefore, it is not necessary to consider that the induction voltage of induction coils 27A and 27B and the integrated value of the field voltage of field coils 28A and 28B do not exceed the upper limit, and the voltage value becomes too high. It is possible to avoid getting lost.

  As shown in FIG. 5, the resistance reduction and voltage reduction of the induction coils 27A and 27B and the field coils 28A and 28B are respectively connected in parallel to the induction coils 27A and 27B and the field coils 28A and 28B respectively. Can also be achieved. However, in each of the induction coils 27A and 27B and the field coils 28A and 28B, both ends of which are connected in parallel, an induced voltage is generated to generate a magnetic flux in a direction to cancel the generation (change) of the magnetic flux. A current circulating in the parallel circuit of 27A and 27B and the field coils 28A and 28B is generated, which prevents the generation of magnetic flux (magnetic force). For this reason, as a rectifier circuit of the rotary electric machine 100, it is preferable to arrange six sets of closed circuits 30 on the rotor 21.

  In such a rotating electric machine 100, in a segmented closed circuit 30 (hereinafter, also simply referred to as a segment type) as shown in FIG. 3, for example, the armature coil 14 of the stator 11 as when traveling of a vehicle starts. When power is supplied to the motor and rotation of the rotor 21 is started, field energy as shown in FIG. 7 from the beginning of the rotation of the rotor 21 with respect to the induced current waveform rectified by one diode (for example, diode 29A). The generation of a gradually increasing induced current is observed at a current value of a magnitude that can be effectively generated. On the other hand, in a series connection circuit (hereinafter, also simply referred to as a series connection type) in which induction coils 27A and 27B shown in FIG. 4 are all in series, the field as shown in FIG. The generation of an induced current of a current value large enough to generate energy effectively is not recognized.

  Thus, in the case of the segment type shown in FIG. 3, the alternating current induced current is rectified by the diodes 29A and 29B with a current value of a magnitude that can effectively generate field energy from the beginning of the rotation of the rotor 21. Thus, the field coils 28A and 28B can be energized as a direct current field current.

  From this, as shown in FIG. 8, in the case of the series connection type shown in FIG. 4, it is not possible to obtain the magnet torque by energization of the field current obtained by rectifying the induction current at the start of rotation of the rotor 21. The rotor 21 is rotated only with a constant torque obtained by energizing the secondary coil 14. On the other hand, in the case of the segment type shown in FIG. 3, the rotor 21 is obtained by adding the magnet torque obtained by the field coils 28A and 28B from the beginning of rotation to the torque obtained by energizing the armature coil 14. The rotor can be rotated, and the rotation torque also gradually increases as the magnet torque increases, and the rotor 21 can be rotated with high efficiency.

  In detail, when the rotor 21 rotates at low speed and the current supplied to the armature coil 14 is small and the load is low, a sufficient space harmonic component does not interlink with the induction coils 27A and 27B, and the series connection type In this case, the internal resistance is large and the induction of the induced current is impeded. On the other hand, in the case of the segment connection type, since the internal resistance is small and the induction of the induction current is not prevented, the magnet torque can be effectively generated and used.

  Further, when the rotor 21 rotates at low speed and the current supplied to the armature coil 14 is large and high load, sufficient space harmonic components link to the induction coils 27A and 27B, but in the case of the series connection type Since the resistance is large and the voltage drop is also large, sufficient induction current can not be supplied. On the other hand, in the case of the segment type, since the internal resistance is small and the voltage drop is small, the induction current can be sufficiently supplied to effectively generate and utilize the magnet torque.

  Further, when the rotor 21 is rotating at high speed, the magnetic flux fluctuation (frequency) is large due to the spatial harmonic component linked to the induction coils 27A and 27B at any time of low load and high load, and induction is high to the induction coils 27A and 27B. The generation of the voltage causes magnetic saturation of the supplementary electrode core material 25 to reduce the inductance, so that even in the case of the series connection type, it is possible to generate and utilize the magnet torque without blocking the conduction of the induction current.

  Then, as shown in FIG. 9, the rotary electric machine 100 makes the armature coil 14 of the stator 11 and the induction coil 27 of the rotor 21 and the field coil 28 uniform in shape by pressure molding after winding work. The coil end cover 110 is attached to cover the outer end surfaces of both sides of the rotor 21 in which the axial outer shape of the shaft (drive shaft) 101 is fixed.

  Specifically, the armature coil 14, the induction coil 27 and the field coil 28 are formed on the front end sides of the stator teeth 12 and the rotor teeth 22, and main portions of the wedge-shaped portions 12 c and 22 c and the supplementary pole core member 25. The outer end portion 32 of 31 is formed in a winding coil wound in a form that can be inserted into the inside, and after being inserted into the inside, it follows along a position away from the respective side faces 12b, 22b, 31b Thus, the winding wound in a coil shape is formed to be in close contact with the side surfaces 12b, 22b and 31b.

  In the stator 11 and the rotor 21, loop shaped portions 14L, 27L and 28L (not shown in the drawings) are formed as fixed portions on both outer sides in the axial direction of the shaft 101 on the radial outer periphery of the rotor 21. The coil 14, the induction coil 27, and the field coil 28 are connected and fixed to the loop shaped portions 14L, 27L, 28L by binding them all around through the binding cords (linear members) 41 ( See Figure 12). In addition, the binding cord 41 is formed into a filament member having sufficient strength by knitting synthetic fibers made of PPS (polyphenylene sulfide) resin into a tube shape, for example, and by impregnating a varnish or the like, the strength is increased. improves.

  Further, as shown in FIG. 10, in the induction coil 27 and the field coil 28, the binding cords 41 passed through the loop shaped portions 27L and 28L are also passed through the ring member 45 fixed to the shaft 101 and bound. As a result, it is firmly installed on the side of the rotor 21 and integrally rotated with the shaft 101.

  In the ring member 45, as shown in FIG. 11, the key projection 46 formed on the inner peripheral surface 45c side of the axial center hole is fitted in the key groove 106 of the shaft 101 in the axial direction as in the rotor 21. By being slid and positioned, the rotor 21 is attached to both axial outer sides of the rotor 21 so as to rotate integrally with the shaft 101.

  The ring member 45 has a plurality of bolt holes 47 for passing a fastening hexagonal bolt 118 described later and a binding hole (connection portion) 48 for passing the binding string 41 open on both sides in the axial direction of the shaft 101. The tie hole 48 is formed so that a notch hole 48 a connected to the outer peripheral surface side of the ring member 45 is formed, and the tie string 41 can be passed through.

  The induction coil 27 and the field coils 28 (281, 282) are firmly bound to the shaft 101 by connecting the ring members 45 with the outer sides in the axial direction of the rotor 21 by the binding cords 41 and positioned and fixed. It is supposed to

  Specifically, as shown in FIG. 12, first, the ring member 45 is attached so that the cutout hole 48 a is positioned inside in the axial direction of the shaft 101, and then the binding member is passed through the binding hole 48 of the ring member 45. The cord 41 is bound by being wound around the loop shaped portion 27L of the induction coil 27 and the loop shaped portion 28L (281L, 282L) of the field coil 28 (281, 282) and firmly positioned and fixed to the shaft 101 (rotor 21) Do.

  In the binding procedure by the binding cord 41, one pair each of the loop shaped portion 27L of the induction coil 27, the loop shaped portion 281L of the field coil 281, and the loop shaped portion 282L of the field coil 282 is bound The following is an example of the case.

  First, the binding cord 41 is pulled through the binding hole 48 of the ring member 45 from the cutout hole 48a (step S1) and pulled outside the loop shaped parts 281L, 282L of the field coils 281, 282 (step S2) The rotor teeth 22 are inserted into the loop shaped portions 281L and 282L from the opening 282Lo on the side of the outer peripheral surface 22a and pulled out from the opening 281Li on the opposite side (axial center side) (step S3).

  Next, after the tie cord 41 pulled out from the opening 281Li at the axial center side of the loop shaped portions 281L, 282L of the field coils 281, 282 is again pulled through the outside of the same loop shaped portions 281L, 282L, then the rotor teeth 22 is inserted into the loop-shaped portions 281L and 282L from the opening 282Lo on the side of the outer peripheral surface 22a and pulled out from the opening 281Li on the opposite side (axial center side) (steps S4 and S5) .

  Then, the binding cord 41 pulled out again from the opening 281Li at the axial center side of the loop shaped parts 281L, 282L is inserted into the notch hole 48a of the binding hole 48 adjacent to the bolt hole 47 of the ring member 45 It is pulled out from the binding hole 48 of the shape plane 45a (step S6), and is also wound around the ring member 45.

  Thereafter, after the tie cord 41 pulled out from the tie hole 48 of the ring member 45 is pulled through the outside between the adjacent loop shaped parts 28L and the outside of the loop shaped part 27L of the induction coil 27 (step S7) The core material 25 is inserted into the loop-shaped portion 27L from the opening 27Lo on the side of the outer end face 32a and drawn out from the opening 27Li on the opposite side (axial center side) (step S8) to be wound once.

  Then, the binding cord 41 pulled out from the opening 27Li at the axial center side of the loop shaped part 27L of the induction coil 27 is pulled into the same binding hole 48 of the ring member 45 from the disk shaped flat 45a side (step S9) By pulling out from 48a, the ring member 45 is in a state of being rewound. Then, the above-described procedure is repeated from step S1 to wind around the entire circumference of the rotor 21.

  Thereby, the induction coil 27 and the field coils 281 and 282 are tightly bound to the shaft 101 and integrally rotated by connecting the loop shaped portions 27L, 281L and 282L and the ring member 45 with the binding cord 41. It is fixed to In particular, in addition to inserting and supporting the tip end portion 36 of the leg portion 35 in the support groove 39 of the rotor teeth 22 for the cogs core material 25, the rotor teeth 22 ( It can be firmly fixed to the shaft 101) side.

  As shown in FIGS. 6 and 9, the coil end covers 110A and 110B are attached to the connecting end 101a side and the rotating end 101b side of the shaft 101, and one of the connecting end 101a is Holders 111 are formed at a plurality of locations on the axially outer surface 110s of the coil end cover 110A, and a plurality of sets of diodes 29A and 29B are installed for each closed circuit 30. The coil end cover 110B does not include the holder 111, and is formed in a thin substantially similar shape to reduce weight, but the coil end cover 110A may be diverted.

  The diodes 29A and 29B are housed in a case (package) 121, and the case 121 is easily fitted in the plurality of holders 111 formed on the outer surface 110s of the coil end cover 110A to connect the connection pins 29c. The closed circuit 30 is formed by connecting the end portions of the winding coil of the induction coil 27 and the field coil 28 to connection end portions 27p, 27q, and 28p. In the present embodiment, although the case where the connection pins 29c of the diodes 29A and 29B are directly connected to the winding coil will be described as an example, the present invention is not limited to this. For example, a connection contact may be provided at the connection end of the winding coil so as to enable conduction simply by inserting the connection pin 29c, so that the diodes 29A and 29B (case 121) can be easily replaced.

  As shown in FIG. 13, the holders 111 are arranged at equal intervals corresponding to the closed circuit 30 in the circumferential direction of the outer surface 110s of the coil end cover 110A, and the case 121 including the connection pin 29c can be fitted In the circumferential direction, it is formed in the same shape and the shape of a continuous hole.

  In the holder 111, a screw hole 112 for screwing a tightening bolt 119 penetrating the through hole 121b of the case 121 is formed on the bottom side, and the coil end cover 110A is formed by setting the case 121 set in the holder 111. It is attached by a fastening bolt 119.

  Similar to the rotor 21 and the ring member 45, the coil end covers 110A and 110B slide in the axial direction by fitting the key projections 116 formed on the inner peripheral surface 110c of the axial center hole in the key groove 106 of the shaft 101 By positioning it as it is, it is attached to the shaft 101 in such a manner that the axial center of the shaft 101 is aligned with it.

  The coil end covers 110A and 110B have bolt holes 117 formed at the same positions as the bolt holes 47 of the ring member 45, and fastening hexagonal bolts 118 described later are inserted into the bolt holes 47 and 117 to make through holes of the rotor 21. The ring member 45 can be fastened and fixed to the rotor 21 without looseness by being interposed between the ring members 45 as a spacer by penetrating and screwing 21 b.

  In addition, coil end covers 110A and 110B are formed in a short cylindrical shape with a bottom, and have a convex shape protruding at a position corresponding to rotor slot 23 between rotor teeth 22 on outer peripheral wall 114 around outer surface 110s. The portion 114a is formed.

  Thus, the coil end cover 110A has the holder 111 (case 121) evenly arranged in the circumferential direction of the outer surface 110s (on the circumference centered on the rotation axis), thereby making the center of gravity coincide with the axis of the shaft 101. It can be fixed so as to integrally rotate, so that the rotation quality of the rotor 21 is not deteriorated. In the present embodiment, the case where the holders 111 are equally spaced on the coil end cover 110A on the outer end face side of the rotor 21 will be described as an example, but the present invention is not limited to this. For example, the holders 111 may be arrayed on the outer peripheral surface side of the rotor 21 or may be arranged at unequal rotational symmetry so that the center of gravity coincides with the axial center.

  In addition, coil end covers 110A and 110B are provided at both ends of outer end portion 32 of main body portion 31 of interpolator core material 25 by the fact that convex portions 114a of outer peripheral wall 114 are fitted between rotor slots 23 of rotor teeth 22. It can be attached in a state in which the side is held down, and it is possible to suppress that the cog core material 25 tries to move by the centrifugal force at the time of rotation, thereby suppressing deterioration of the rotation quality.

  Further, the coil end cover 110A holds the circuit board (wiring connection board) 122 between the outer end face of the rotor 21 and the shaft with the fastening hexagonal bolt 118 while the end plate 136A described later is positioned further outside. It is screwed to 101.

  As shown in FIG. 15, the circuit board 122 is formed in a shape that can be fitted on the back side of the outer surface 110s of the coil end cover 110A, and the key protrusion 126 fitted in the key groove 106 of the shaft 101 has an axial center hole. A key groove 127 is formed in the outer peripheral edge 122b which is formed in the inner peripheral edge 122c and which is fitted to the key projection 115 formed on the inner peripheral surface side of the outer peripheral wall 114 of the coil end cover 110A shown in FIG. . The circuit board 122 is also provided with bolt holes 128 at the same positions as the bolt holes 47 of the ring member 45, and coil ends are obtained by inserting and fastening fastening hexagonal bolts 118 described later into the bolt holes 128. Between the cover 110A and the ring member 45, it can be fixed to the rotor 21 without looseness.

  Thereby, as shown in FIG. 16, the circuit board 122 inserts the key projection 115 in the outer peripheral wall 114 of the coil end cover 110A into the key groove 127 of the outer peripheral edge 122b and positions it on the back side of the outer surface 110s without rotation. The key projections 116 and 126 can be fitted into the key groove 106 of the shaft 101 and attached to the shaft 101 so as to rotate together with the coil end cover 110A.

  The circuit board 122 has a plurality of through holes 123a into which connection end portions 27p, 27q, 281p, 281q, 282p, 282q of winding coils constituting the induction coil 27 and the field coil 28 (281, 282) are inserted. , 123b, and a plurality of conduction patterns 124a to 124d that connect the diodes 29A and 29B to the induction coil 27 and the field coil 28 to form the closed circuit 30, respectively.

  Through holes 123a are opened in conduction patterns 124a to 124d, and connection end portions 27p, 27q, 281p, 281q, 282p, 282q of induction coils 27A and field coils 281 and 282 to be inserted are connected to conduction patterns 124a to 124d. Can be easily connected by soldering.

  The through holes 123b are open outside the formation region of the conductive patterns 124a to 124d, and the winding coils of the induction coil 27 and the field coils 281 and 282 to be inserted are not in conductive contact with the conductive patterns 124a to 124d. The connection ends 27p, 27q, 282p can be drawn out so as to be connectable to the connection pins 29c of the diodes 29A, 29B.

  Specifically, as shown in FIG. 17, in the circuit board 122, the connection end portions 281p and 282q of the field coils 28A (281) and 28A (282) are exposed in the connection surface of the conduction pattern 124a at the through holes 123a. And it is conductively connected. Similarly, connection end portions 281p of the field coils 28A (281) and 28B (281) are conductively connected to the conduction pattern 124b. The connection end 27q of the induction coil 27A and the connection end 282q of the field coil 28B (282) are electrically connected to the conduction pattern 124c. In the conduction pattern 124d, the connection end 27p of the induction coil 27A, the connection end 282p of the field coil 28B (282), and the connection end 27p of the induction coil 27B are electrically connected.

  In addition, in the through hole 123b, a winding having the connection end 28p of the field coil 28A (282), the connection end 27q of the induction coil 27A, and the connection end 27q of the induction coil 27B inserted is inserted.

  The winding coils of the field coil 28A (282) and the induction coils 27A and 27B inserted into the through holes 123b are inserted into the through holes 110d formed in the coil end cover 110A shown in FIG. Thus, the connection pin 29c of the diode 29A, 29B is electrically connected, and the through hole 110d is inserted into the holder 111 of the coil end cover 110A. The connection pin 29c of the diode 29A, 29B (case 121) It is formed in the position corresponding to.

  Thereby, each of the connection end 28p of the field coil 28A (282) inserted into the through hole 123b and the induction coil 27A, 27B, and the connection end 27p, 27q of the induction coil 27A, 27B can be easily conducted directly by soldering or the like. It can be connected.

  The rotary electric machine 100 does not show the rotor 21 before the circuit board 122 is attached, in other words, the rotor 21 in which the induction coil 27 and the field coil 28 are bound and fixed by the binding cord 41 using the ring member 45. It is set in the molding space (cavity) of the molding die and the PPS resin, for example, is injected and filled in the internal space.

  Here, when setting the shaft 101 in the vertical direction, the molding die has an inner circumferential surface of an inner diameter that faces the outer circumferential surface 22a of the rotor teeth 22 of the rotor 21 without substantially leaving a gap, and The molding space is formed by providing a bottom surface and a ceiling surface close to the loop shaped portions 27L, 28L on both axial end sides of the coil 28. Further, this molding die is formed so that the same shape as the outer peripheral wall 114 of the coil end covers 110A and 110B protrudes on the inner peripheral surface of the molding space. Furthermore, on the ceiling surface side of the molding space of the molding die, through holes for holding connection end portions 27p, 27q, 28a, 28b drawn from the winding coils of the induction coil 27 and the field coil 28 are respectively wound It is formed to open at a position close to the coil.

  On the other hand, the windings inserted into the through holes 123a of the circuit board 122 are cut to a length sufficient to be self-supporting to be connection ends 27p, 27q, 28p due to their own rigidity. The winding inserted into the through hole 123b of the circuit board 122 is inserted into the through hole 110d opened at the position corresponding to the connection pin 29c of the diode 29A, 29B inserted into the holder 111 of the coil end cover 110A. It is cut to a sufficient length to perform the operation of conducting connection.

  Thereby, the rotor 21 is erected by covering the ceiling surface side in a state where the winding wire which is set in the molding die and inserted into the through hole 123 b of the circuit board 122 from the through hole on the ceiling surface is drawn out. The connection end portions 27p, 27q, 28a, 28b of the winding end portions which are inserted into the through holes 123a of the circuit board 122 which is self-supporting) can be inserted and held in the through holes.

  Thereafter, when injecting and filling PPS resin into the molding die, while limiting the entry of the filling resin into a location that hinders the attachment of the outer peripheral wall 114 of the coil end covers 110A and 110B attached to both ends of the rotor 21 The PPS resin can be intruded into the rotor 21 and embedded in gaps between and around the windings of the induction coil 27 and the field coil 28. As described above, the movement of the winding can be restricted to stabilize the characteristics and improve the durability.

  Further, the PPS resin filled in the rotor slot 23 of the rotor 21 covers and solidifies the entire of the cogging core material 25 together with the induction coil 27 and the field coil 28 smoothly and continuously on the outer peripheral surface 22 a of the rotor teeth 22. As a result, it is possible to reliably limit movement of the induction coil 27 and the field coil 28 by centrifugal force during rotation. Specifically, in addition to the fact that the induction coil 27 and the field coil 28 abut against the ridge-shaped portion 22 c of the rotor teeth 22 and limited, it can be more reliably limited and supported.

  Further, since the induction coil 27 formed on both axial end sides of the rotor 21 and the loop shaped portions 27L and 28L of the field coil 28 and the binding cord 41 are also covered and supported by PPS resin, they are deformed by some load Damage can be avoided.

  Then, as shown in FIG. 18, the rotor 21 after injection filling with PPS resin taken out from the inside of the molding die has the induction coil 27, the field coil 28, etc. inside along with the rotor teeth 22 and the interpolar core material 25. It is possible to take out as the resin mold Mo to which the molding space is transferred while being positioned and fixed (supporting). The rotor 21 makes the connecting ends 27p, 27q, 28p, 28q of the windings of the induction coil 27 and the field coil 28 upright (self-supporting) on the ceiling surface Mou of the resin mold Mo so that the conductor protrusion is formed. It can be provided as MoP.

  For this reason, the rotor 21 inserts the conductor projection MoP into the through hole 123a of the circuit board 122 by positioning the circuit board 122 while covering it (approaching to the resin mold Mo side) to the conductive pattern 124 (124a to 124d). The connection end portions 27p, 27q, 28p, and 28q of the windings of the induction coil 27 and the field coil 28 can be easily connected by wire connection.

  Further, the rotor 21 may be provided with windings of the induction coil 27 and the field coil 28 whose end portions are connection ends 27p, 27q, 28p, 28q as conductor lines MoL on the ceiling surface Mou of the resin mold Mo. it can.

  For this reason, the rotor 21 appropriately inserts and extracts the conductor line MoL extending on the ceiling surface Mou of the resin mold Mo from the through hole 123b of the circuit board 122 to the through hole 110d of the coil end cover 110A. After attaching the coil end cover 110A to the rotor 21, by cutting and soldering an extra portion of the conductor line MoL, the connection end 27p, 27q, of the winding of the induction coil 27 or the field coil 28. The wire 282p can be easily wire connected to the connection pin 29c of the diodes 29A and 29B fitted into the holder 111.

  At this time, the coil end covers 110A and 110B which take out the rotor 21 from the inside of the molding die and attach it with the circuit board 122 are the outer circumferences of the outer peripheral surface 22a of the rotor teeth 22 at both ends of the rotor 21 and the side surface Mos of the resin mold Mo The wall 114 can be positioned in a smoothly continuous state, and the convex shaped portion 114 a of the outer peripheral wall 114 is fitted between the rotor teeth 22 so that the outer end 32 of the main portion 31 of the interpolar core member 25 can be positioned. The outer end face 32a of the lower surface 32a can be pressed.

  Further, as shown in FIG. 19, the coil end covers 110A and 110B are clamped by the shaft 101 together with the circuit board 122 so as to be sandwiched by the end plates 136A and 136B located on the outer sides in the axial direction. It is screwed by.

  As shown in FIG. 20, the end plates 136A and 136B are formed of a nonmagnetic metal plate, for example, a brass plate in a disk shape having substantially the same diameter as the coil end covers 110A and 110B, thereby forming a magnetic path during operation. It is manufactured so as not to affect etc. One end plate 136A functions as a heat dissipating plate which exchanges heat generated during function of diodes 29A and 29B and releases the heat to the outside by closely contacting one surface side of case 121 as a heat dissipating surface (for example, an aluminum base surface) 121a. It is supposed to The end plates 136A and 136B are also formed to correct the deviation of the shaft 101 (around the rotation axis) according to the various components installed in the rotary electric machine 100, and function as a balance correction plate to provide an overall It is designed to ensure the rotational balance of the

  The end plate 136A has bolt holes 137 (see FIG. 9) into which fastening hexagonal bolts 118 are inserted at the same positions as the bolt holes 128 of the circuit board 122 and the bolt holes 117 of the coil end covers 110A and 110B. Further, in the end plate 136B, a screw hole 138 (see FIG. 9) for screwing the fastening hexagonal bolt 118 is formed at the same position as the bolt hole 137 of the end plate 136A.

  Thus, rotary electric machine 100 clamps end plates 136A and 136B by fastening hexagonal bolts 118 on both end sides of rotor 21 on which coil end covers 110A and 110B and circuit board 122 are attached and closed circuit 30 is installed. The rotor 21 can be set in the stator 11.

  Here, the rotary electric machine 100 is, for example, in a coupling hole (not shown) provided on the mechanism side constituting the power transmission path on the vehicle side, of the connection end portion 101a on one end side of the shaft 101 formed in a knurled shape. It is designed to be connected relative to each other in a non-rotatable manner. The rotary electric machine 100 is mounted and installed by screwing a housing (not shown) formed in a shape covering the entire stator 11 to the vehicle side.

  The rotation of the rotating electrical machine 100 is detected by a resolver (rotation detecting element) 131 attached to the rotating end 101b opposite to the connecting end 101a of the shaft 101 so as to be located in the housing as shown in FIG. It is supposed to be. The resolver 131 fixes the rotor resolver 132 to the rotating end 101 b of the shaft 101 so as to rotate integrally with the pressing ring 139, and detects the rotation of the shaft 101 by fixing the resolver stator 133 non-rotatably to the housing side. It is supposed to

  Therefore, in the rotary electric machine 100, the diodes 29A and 29B (case 121) are installed on the coil end cover 110A disposed on the side of the connection end 101a opposite to the rotating end 101b where the resolver 131 is installed. It is possible to prevent the noise generated when the diodes 29A and 29B operate from affecting the resolver 131 and lowering the detection accuracy.

  As described above, in the rotary electric machine 100 of the present embodiment, since the rotor 21 is set in the molding die and the PPS resin is injected and filled, the PPS is formed in the gap between the rotor teeth 22 in the rotor slot 23. Resin can be introduced and fixed. Therefore, the induction coil 27 and the field coil 28 in the rotor slot 23 can be supported in a non-deformable or non-movable state by the PPS resin intruding into the gap and adhering to the winding. Further, in addition to the fact that the tip portion 36 of the leg portion 35 is fitted into and supported by the support groove 39 of the rotor teeth 22, the commutating pole core material 25 in the rotor slot 23 is also moved by centrifugal force. It is supported to be limited by the 22 wedge shaped portions 22c.

  Furthermore, the induction coil 27 and the field coil 28 are firmly passed through the binding cords 41 in the binding holes 48 of the ring member 45 fixed to the shaft 101 and the loop shaped parts 27L and 28L on both axial end sides of the rotor 21. Because it ties, it can restrict trying to move by centrifugal force. In particular, since the induction coil 27 is supported by the legs 35, it can be supported further immovably by means of the binding cord 41 together with the core core material 25. When the ring member 45 is not filled with PPS resin on the end side in the axial direction of the rotor 21, the ring member 45 functions as a spacer to limit deformation of the loop shaped portions 27L and 28L of the induction coil 27 and the field coil 28. Space can be secured.

  As described above, in the rotary electric machine 100 according to the present embodiment, the field coil 28, the interpolator core material 25 and the induction coil 27 in the rotor slot 23 of the rotor 21 are damaged by vibration or the like during operation. Thus, it is possible to provide a high quality rotating electric machine 100.

  Furthermore, in the rotary electric machine 100 of the present embodiment, the connection end portions 27p, 27q, 28p, and 28q of the induction coil 27 of the core material 25 and the winding of the field coil 28 of the rotor teeth 22 are electrically connected to the circuit board 122. Conduction connection can be easily made simply by inserting in through holes 123a of patterns 124a to 124d, and furthermore, it is possible to easily form a plurality of closed circuits 30 by connecting to connection pins 29c of diodes 29A and 29B. it can.

  Further, since each of the plurality of closed circuits 30 generates and rectifies AC induction current to generate DC field current, the current value (load) rectified by the diodes 29A and 29B is suppressed to a small value, and the induced voltage and It can avoid that winding resistance becomes high unnecessarily. As a result, the copper loss can be suppressed and the electromagnetic force (magnet torque) can be generated efficiently.

  As described above, the rotating electrical machine 100 according to the present embodiment can recover the leakage magnetic flux (harmonics) interlinking from the stator 11 side to the rotor 21 side to generate field energy, and generate torque with high efficiency. It is possible to provide the rotary electric machine 100 that can be driven to rotate.

  Furthermore, since the diodes 29A and 29B are set in the holder 111 of the coil end cover 110A attached on the side of the connecting end 101a that is axially separated from the resolver 131 on the rotating end 101b side of the shaft 101, rectification of the induced current Can be reduced to affect the detection of the rotation of the resolver 131, and deterioration of the rotation quality can be avoided.

  The diodes 29A and 29B packaged in the case 121 can be connected to the closed circuit 30 simply by setting and soldering in the holder 111 on the outer surface 110s side of the coil end cover 110A. The work such as replacement can be easily completed simply by removing the plate 136A.

  The coil end cover 110A uniformly arranges the holder 111 on the outer surface 110s side in the circumferential direction on the circumference centered on the axis so as to correspond to the plurality of closed circuits 30, so that the diodes 29A and 29B (case 121 The center of gravity can be made to coincide with the axis even in the state where the) is set, and the layout of the diodes 29A and 29B prevents the rotational quality from being degraded.

  Here, as another aspect of the present embodiment, in the case where the series circuit (series connection type) shown in FIG. 4 is adopted to reduce the number of diodes 29A, 29B used, as shown in FIG. The outer surface 210s of the coil end cover 210A having substantially the same structure as that of 110A adopts a structure in which one case 121 for accommodating one set of diodes 29A, 29B is set in one holder 111. In this other aspect, the weight reduction can be achieved by forming the portion other than the one holder 111 thin. In this case, for example, the strength may be secured by forming a plurality of ribs 211 extending in the radial direction from the shaft 101 (axial center) side. It is preferable to avoid that the center of gravity deviates from the axial center by increasing the number of ribs 211.

  Furthermore, as another aspect, although illustration is omitted, in the present embodiment, the case where the induction coil 27 is disposed in the coplanar core member 25 installed in the rotor slot 23 will be described as an example, but It is not limited to For example, a two-stage structure may be employed in which the induction coil 27 is disposed on the side of the outer peripheral surface 22a close to the stator 11 of the rotor teeth 22 and the field coil 28 is disposed on the shaft 101 (axial center) side. Also in this case, as in the present embodiment, it is segmented for each closed circuit 30 to suppress the current value rectified by the diodes 29A and 29B to a small value, and the induced voltage and winding resistance become unnecessarily high. It is possible to prevent the copper loss and efficiently generate the electromagnetic force.

  In addition, the stator 11 and the rotor 21 are not limited to the laminated structure of the magnetic steel sheets, and for example, soft magnetic composites (Soft Magnetic Composites) in which the surface of particles having magnetism such as iron powder is insulatingly coated. Furthermore, a dust core produced by iron powder compression molding and heat treatment, so-called SMC core may be adopted.

Further, the rectification process of the induced current is not limited to the diodes 29A and 29B, and another semiconductor element, for example, a switching element may be mounted.
Further, the acquisition of the magnet torque is not limited to the field coils 28A and 28B, and permanent magnets may be used in combination.

  In addition, the rotary electric machine 100 is not limited to being mounted on a car, and can be suitably adopted as a drive source for wind power generation, a machine tool, or the like, for example.

  While embodiments of the present invention have been disclosed, it will be apparent to one skilled in the art that modifications can be made without departing from the scope of the present invention. All such modifications and equivalents are intended to be included in the following claims.

11 stator 12 stator teeth 13 status lot 14 armature coil 21 rotor 22 rotor teeth (slip pole)
22c Saddle-shaped part 23 Rotor slot 25 Coaxial core material (Coaxial part)
27, 27A, 27B Induction coils 27L, 28L, 281L, 282L Loop shaped parts (fixed parts)
27p, 27q, 28p, 28q, 281p, 281q, 282p, 282q Connection end 28, 28A, 28B, 281, 282 Field coil 29A, 29B Diode (rectifying element)
29c connection pin 30 closed circuit 31 main body 32 outer end 32a outer end face 35 leg (support)
36 tip portion 39 support groove 41 binding cord (linear member)
45 Ring member (spacer)
47 bolt hole 48 tie hole (connection part)
48a Notched hole 100 Rotating electric machine 101 Shaft (rotary shaft)
110, 110A, 110B, 210A Coil end cover 110d, 123a, 123b Through hole 111, 211 Holder 121 Case 122 Circuit board (circuit board for connection)
124a to 124d Conduction patterns 136A, 136B End plates 211 Ribs 211 Holder G Air gap Mo Resin mold

Claims (5)

A rotating electrical machine comprising: a stator having an armature coil that generates a magnetic flux by energization; and a rotor that rotates by the passage of the magnetic flux,
The rotor is wound with an induction coil that generates an induced current by linking spatial harmonic components superimposed on the magnetic flux, and a plurality of interpoles arranged on the q-axis and the induced current are conducted. The field coil functioning as an electromagnet is wound and fixed to the rotor at a plurality of salient pole portions wound on the d-axis and the axial end of the rotor, the induction coil and the field And a ring member for securing a space on the end side in the axial direction of the coil;
The supplementary pole portion has a main body portion around which the induction coil is wound, and a support portion connected to the main body portion and supported by the opposite side surfaces of the adjacent salient pole portions.
A resin material is injected into the slot of the salient pole portion where the induction coil, the field coil and the referential pole portion are located,
The ring member has a plurality of connecting portions for connecting the induction coil and the field coil by a linear member,
The rotating electrical machine, wherein the plurality of connecting portions are arranged circumferentially and arranged on the q-axis. The ring member is disposed at a position overlapping with the field coil and the induction coil radially inward.
The connecting portion is formed by a binding hole provided on the axially outer side of the ring member, and a cutout hole opened radially outward of the ring member and connected to the binding hole.
The rotating electrical machine according to claim 1, wherein the binding hole and the cutout hole are provided on the q axis. In the plurality of interpoles, a first space is formed at an axial end between the interpole and the induction coil.
In the plurality of salient pole portions, a second space through which the linear member can be inserted is formed between the salient pole portion and the field coil at an axial end portion,
The linear member is inserted into the binding hole formed in the connecting portion, the first space, the second space, and a cutout hole formed in the connecting portion adjacent to the connecting portion. The rotating electric machine according to Item 2.   4. The inductive coil and the field coil according to any one of claims 1 to 3, wherein the end of the winding is conductively connected via a conductive pattern formed on the wiring substrate. The electric rotating machine described in. A plurality of rectifying elements which rectify the induction current generated by the induction coil and supply the field coil with field current;
The rectifying device is accommodated in a holder formed on the outer surface side of a cover covering an axial end side of the rotor, and a connection terminal of the rectifying device is a winding of the induction coil and the field coil. The electrical rotating machine according to any one of claims 1 to 4, wherein the electrical connection is conducted and connected to an end of the wire.

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