JP2016178834A - Rotary electric machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary electric machine capable of being stably driven by installing components of the rotary electric machine to be driven by a magnetic field generated by self excitation so that stability of characteristics and durability are secured.SOLUTION: A rotary electric machine 100 includes a stator 11 having armature coils 14 and a rotor 21 to be rotated by passage of magnetic flux. The rotor includes interpole core materials 25 around which induction coils 27 for generating an induction current by interlinkage of space harmonics components superposed to magnetic flux are respectively wound; and rotor teeth 22 around which field coils 28 functioned as electric magnets due to passage of induction currents are respectively wound. Each interpole core material includes a body section 31 around which the induction coil is wound and a leg section 35 connected to the body section and supported on both side faces 22b of the rotor teeth, and a resin material is injected into a rotor slot in which the induction coil, the field coil and the interpole core material are located.SELECTED DRAWING: Figure 1

Description

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

  The rotating electrical machine is mounted as a drive source in various drive devices. For example, an IPM motor (Interior Permanent Magnet Motor) is known as an in-vehicle rotating electrical machine that can obtain a large output (large torque) by using a magnet torque generated by a permanent magnet embedded on the rotor side. Such IPM motors employ a neodymium magnet that has a high residual magnetic flux density and can ensure heat resistance, in response to demands for miniaturization and high output (high energy density). This neodymium magnet is a high-cost factor because it adds expensive rare earth elements such as Dy (dysprosium) and Tb (terbium).

  For this reason, in recent rotating electrical machines, a wound field synchronous motor in which a permanent magnet is replaced with an electromagnet has been proposed. In this wound field synchronous motor, an induced current generated by a rotor side coil is applied to the field. A self-excited type using a magnetic current has been proposed.

  As this self-excited winding field synchronous motor (rotary electric machine), for example, as described in Patent Documents 1 and 2, the fundamental frequency of the AC drive current supplied to the armature coil on the stator side is larger. A high-frequency leakage magnetic flux (harmonic magnetic flux) is linked to a coil arranged on the rotor side.

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

  As described in these Patent Documents 1 and 2, in a rotating electrical machine that requires a component to be installed on the rotor side, it is necessary to install the component in a structure that can withstand the centrifugal force associated with high-speed rotation of the rotor. There is.

JP 2010-136524 A JP 2012-175835 A

  Accordingly, the present invention provides a rotating electrical machine that can be driven stably by installing constituent members of the rotating electrical machine driven by a magnetic field generated by self-excitation so as to ensure stability of characteristics and durability. It is aimed.

  One aspect of the invention of a rotating electrical machine that solves the above problems is a rotating electrical machine that includes a stator having an armature coil that generates a magnetic flux when energized, and a rotor that rotates by the passage of the magnetic flux. A plurality of auxiliary pole portions wound with an induction coil that generates an induction current by interlinking the spatial harmonic components superimposed on the magnetic flux, and a field coil that functions as an electromagnet when the induction current is energized A plurality of salient pole parts wound around, and the auxiliary pole part is connected to the main body part around which the induction coil is wound, and on both side surfaces of the adjacent salient pole parts facing each other. And a support portion to be supported, and a resin material is injected into a slot of the salient pole portion where the induction coil, the field coil, and the auxiliary pole portion are located.

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

FIG. 1 is a diagram showing a rotating electrical machine according to an embodiment of the present invention, and is a radial cross-sectional view of a semicircular portion of a circle showing a schematic overall configuration. FIG. 2 is a radial cross-sectional view enlarging a part of a circular shape showing a schematic overall configuration in FIG. 1. FIG. 3 is a circuit configuration diagram of a closed circuit in which the induction coil and the 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 rotating electrical machine. FIG. 7 is a graph for comparing closed circuit connection methods by induced current values. FIG. 8 is a graph comparing the closed circuit connection methods by torque characteristics. FIG. 9 is an axial sectional view of the entire rotating electrical 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 including a holder for installing a diode in a closed circuit. 14 is a plan view showing a bottom surface portion on the inner surface side 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 where 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 the connection of the induction coil and the field coil by the circuit board. FIG. 18 is a perspective view showing a form of a resin mold of a rotor in which resin is injected and filled in a space such as a rotor slot. FIG. 19 is an exploded front view showing assembly parts on the rotor side. FIG. 20 is a perspective view showing a member attached to the axial end portion of the rotor. FIG. 21 is a perspective view showing the structure of the coil end cover, showing another embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1-20 is a figure explaining the rotary electric machine which concerns on one Embodiment of this invention.

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

  The rotating electrical machine 100 includes a stator (stator) 11 formed in a substantially cylindrical shape and a rotor (rotor) that is fixed to a shaft (rotating shaft) 101 that rotates as a driving shaft shown in FIG. 21). The rotor 21 is configured such that the shaft 101 is inserted and fixed in the inner cylinder (inner peripheral surface 21 a), and the key groove 106 formed so as to be continuous in the axial direction of the outer peripheral surface of the shaft 101. The key protrusion 26 formed on the inner peripheral surface 21a is fitted, and is slid in the axial direction and positioned, so that the shaft 101 is attached to the shaft 101 so as to rotate integrally.

  The stator 11 is formed with a plurality of salient poles that are radially extended so that the outer peripheral surface 22a of the rotor teeth 22 of the rotor 21 faces the inner peripheral surface 12a through the air gap G. The stator teeth 12 are evenly arranged in the circumferential direction. The stator teeth 12 are formed with an armature coil 14 by using a status lot 13 which is a space formed between adjacent side surfaces and concentrating three-phase windings for each phase individually. . The stator teeth 12 function as an electromagnet that generates a magnetic flux that rotates the rotor 21 that is housed facing the armature coil 14 by inputting a three-phase AC drive current to the armature coil 14.

  In the rotor 21, a plurality of rotor teeth (saliency pole portions) 22 that are extended in the radial direction and formed in a salient pole shape similarly to the stator teeth 12 are equally arranged in the circumferential direction. The rotor teeth 22 are formed in such a manner that the outer circumferential surface 22a is appropriately close to the inner circumferential surface 12a of the stator teeth 12 at the time of relative rotation by making the number of the circumferential teeth different from that of the stator teeth 12.

  As a result, the rotating electrical machine 100 generates a magnetic flux when energized to the armature coil 14 in the status lot 13 of the stator 11, and the magnetic flux is opposed to the outer periphery of the rotor teeth 22 facing the inner peripheral surface 12 a of the stator teeth 12. It can be linked to the surface 22a. In this rotating electrical machine 100, the rotor 21 is relatively rotated by a reluctance torque (main rotational force) that attempts to minimize the magnetic path through which the magnetic flux interlinking with the stator teeth 12 passes. As a result, the rotating electrical machine 100 can output, as mechanical energy, electrical energy that is energized and input from the shaft 101 that rotates integrally with the rotor 21 that rotates relatively in the stator 11 while matching the axis. That is, the rotating electrical machine 100 is constructed as a reluctance motor.

  At this time, in the rotating electrical machine 100, harmonic components are superimposed on the magnetic flux interlinking from the inner peripheral surface 12 a of the stator tooth 12 to the outer peripheral surface 22 a of the rotor tooth 22. For this reason, on the rotor 21 side as well, an induced electromotive force can be obtained by generating an induced current (auxiliary current) in a built-in coil by using a change in the magnetic flux density of the harmonic component of the magnetic flux linked from the stator 11 side. it can.

  Specifically, simply supplying the driving power of the fundamental frequency to the armature coil 14 of the stator 11 simply rotates the rotor 21 (rotor teeth 22) with the main magnetic flux that fluctuates at the fundamental frequency. Even if the coil is simply arranged on the side, the interlinkage magnetic flux does not change and no induced current is generated.

  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 at a period different from the fundamental frequency. From this, the harmonic component superimposed on the magnetic flux of the fundamental frequency can efficiently generate an induced current by installing a coil in the vicinity of the outer peripheral surface 22a of the rotor tooth 22. As a result, harmonic magnetic flux that causes iron loss can be recovered as energy for self-excitation.

  Therefore, in the rotating electrical machine 100 of the present embodiment, on the rotor 21 side, the induction coil 27 concentratedly wound around the complementary core material (complementary electrode portion) 25 is arranged in the rotational direction so as to be accommodated in the rotor slot 23 between the rotor teeth 22. Place several in parallel. Further, the rotating electrical machine 100 is arranged so that the field coils 28 (281, 282) concentrated and wound in series are arranged in one stage (one block) as a whole of the rotor teeth 22.

  The complementary core material 25 is configured to support leg portions (support portions) 35 on both side surfaces 22 b of the rotor teeth 22 facing each other. In this way, the complementary core material 25 is positioned and held in the rotor slot 23 between the side surfaces 22b of the rotor teeth 22 by connecting and supporting the body portion 31 around which the induction coil 27 is wound with the leg portion 35. ing.

  The main body 31 of the auxiliary pole core material 25 is made of a magnetic steel sheet so as to be in a plate shape that can be wound around the induction coil 27 while facing the both side surfaces 22b of the rotor teeth 22 of the rotor 21 while extending in parallel with the shaft 101. It is formed by stacking. The main body 31 extends in the rotor slot 23 between the rotor teeth 22 from the axial center outward in the radial direction of the rotor 21, and the induction coil 27 is wound around the outer end surface 32 a of the radial outer end 32. The stator 21 is assembled to the rotor 21 so as to face the inner peripheral surface 12a of the stator teeth 12 of the stator 11. The main body 31 of the complementary core material 25 is formed such 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 shifting due to the centrifugal force of time. Here, the radially outward direction of the rotor 21 means a direction from the shaft center toward the outside of the outer peripheral surface on a straight line passing through the shaft center.

  The leg portions 35 of the complementary core material 25 are extended in parallel with the shaft 101 and are formed by laminating electromagnetic steel plates. The leg portion 35 of the complementary core member 25 is formed to have a plate shape extending from the radially inner end portion 31 i of the rotor 21 of the main body portion 31 toward both side surfaces 22 b of the rotor teeth 22. . Further, the leg portion 35 supports the main body portion 31 by assembling (connecting) the front end portion 36 by fitting into the support groove 39 formed on the both side surfaces 22b of the rotor teeth 22. ing. Thereby, the complementary core member 25 is assembled by fitting the tip portion 36 of the leg portion 35 into the support groove 39 of the rotor tooth 22 from the end face side in the rotation axis direction and sliding it. Here, the radially inward direction of the rotor 21 means a direction from the outer peripheral surface toward the axial center side on a straight line passing through the axial center.

  The leg portion 35 of the complementary core member 25 is formed by laminating electromagnetic steel plates that secure a sufficient strength to support the main body portion 31 and have the width as narrow as possible. It is formed in a shape that extends in the direction of the rotation axis with a width equal to or less than the thickness of the sheet. That is, the leg portion 35 is formed in a plate shape with a small cross-sectional area so as to limit the amount of magnetic flux passing between the main body portion 31 and the rotor tooth 22 as much as possible. In order to function as a separate magnetic pole (complementary pole), it is formed so as to be supported in a magnetically independent form.

  As a result, the amount of magnetic flux passing through the leg portion 35 of the supplementary core material 25 is limited in the rotor 21, and the magnetic flux lines that are about to pass through immediately become dense, so that the rotor 21 is easily magnetically saturated. From such a structure, the magnetic coupling between the complementary core material 25 and the rotor teeth 22 can be suppressed, and the complementary core material 25 can be supported in a state sufficiently magnetically independent from the rotor teeth 22. . For this reason, it can be avoided that magnetic fluxes interlinking with each of the rotor teeth 22 and the supplementary core material 25 interfere with each other to reduce the generation efficiency of the induced current and the magnetic field, and the rotor 21 can be operated with a large torque. It can be rotated with high efficiency.

  Further, with this structure, the rotor 21 is configured so that a part of the field coil 28 is disposed on the axially inner side of the rotor teeth 22 or the entire rotor teeth 22 before the auxiliary pole core material 25 is supported by the rotor teeth 22. Alternatively, the whole can be wound, and thereafter, the leg portion 35 of the complementary core member 25 can be fitted into the support groove 39 of the rotor tooth 22 and supported.

  At this time, the induction coil 27 may be wound around the main body 31 before or after the leg portions 35 of the supplementary core material 25 are supported by the rotor teeth 22. The field coil 28 includes a first field coil 281 that is radially inward of the leg portion 35 of the complementary pole core material 25 and a radially outer portion of the first field coil 281 that is radially outward of the leg portion 35 of the complementary pole core material 25. The first and second field coils 281 and 282 are connected in series to form the field coil 28. The first and second field coils 281 and 282 are connected in series.

  In this way, 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 31 of the complementary core material 25 by being supported by the legs 35 of the complementary core material 25. . Further, since the leg portion 35 of the complementary core member 25 is fitted into and supported by the support groove 39 of the rotor tooth 22, the first pole of the field coil 28 is not obstructed by the leg portion 35 of the complementary pole core member 25. The 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, an induction current is efficiently generated in the induction coil 27 by effectively using the space in the rotor slot 23, and the induction current is converted into the field coil 28. To effectively generate a magnetic field.

  When the first and second field coils 281 and 282 of the field coil 28 are wound around the entire rotor teeth 22 (both radially inward and radially outward) in one step, they are complementary poles. What is necessary is just to wind in the state which left the space which the leg part 35 of the core material 25 slides in the rotor slot 23. FIG. When the first and second field coils 281 and 282 are wound around the rotor teeth 22 before and after the auxiliary pole core material 25 is supported, the inner side (radially inward) of the rotor teeth 22 is wound. ), After winding the first field coil 281, before winding the induction coil 27 around the main body 31 of the complementary core material 25, or in a state where the induction coil 27 is wound around the main body 31. What is necessary is just to wind the 2nd field coil 282 around the outer peripheral side outer side (radial direction outward) of the rotor teeth 22. FIG.

  The induction coil 27 is wound around the complementary core material 25 made of electromagnetic steel (magnetic material), thereby increasing the magnetic permeability so that the magnetic flux can be linked with high density. Further, the induction coil 27 is positioned on a magnetic path facing the inner peripheral surface 12a of the stator tooth 12 via the air gap G that is as small as possible, so that more harmonic magnetic flux can be linked. . The induction coil 27 performs a magnetic field analysis so as to effectively use the third time harmonic component of the magnetic flux interlinking from the inner peripheral surface 12a of the stator tooth 12 to the outer peripheral surface 22a side of the rotor tooth 22 to perform harmonics. It is installed so that an induced current can be generated efficiently by checking the magnetic path. The induction coil 27 is disposed between the rotor teeth 22 so as to ensure a necessary and sufficient gap between the induction coil 27 and the field coil 28.

Thus, by adopting the concentrated winding structure, the induction coil 27 and the field coil 28 do not need to be wound across a plurality of slots and can be reduced in size. In addition, the induction coil 27 efficiently generates an induced current due to the linkage of the third-order time harmonic magnetic flux in the rotation coordinate (dq axis) while reducing the copper loss loss on the primary side, and thereby the field magnet. You can get energy.
Here, the third-order temporal harmonic in the rotational coordinates (dq axis) is the second-order spatial harmonic in the stationary coordinates.

  Thus, since the induction coil 27 and the field coil 28 are separately wound around the rotor tooth 22 and the complementary core material 25 so that the magnetic flux paths do not interfere with each other, magnetic interference is suppressed. However, an induced current can be generated efficiently.

  The rotating electrical machine 100 has a structure that mainly uses the 3f-order time harmonic magnetic flux (f = 1, 2, 3,...) In the rotation coordinates, and “a salient pole portion (rotor teeth 22) on the rotor 21 side”. The number P of the status lots 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. For this reason, the rotor 21 can generate an induced current efficiently by changing the magnetic flux intensity linked to the induction coil 27 between the rotor teeth 22, and the harmonic component superimposed on the magnetic flux of the fundamental frequency can be generated. It can be efficiently recovered and rotated as a field energy source.

  Further, as described above, the rotating electrical machine 100 has a structure that determines the quality of the relative magnetic action between the rotor 21 side and the stator 11 side as “the ratio of the number of rotor teeth salient poles P to the number of status lots S”. The reason why “P / S = 2/3” is adopted is to reduce the electromagnetic vibration and realize the rotation with small electromagnetic noise.

  Specifically, when magnetic field analysis of the magnetic flux density distribution is performed, the magnetic flux density distribution is also distributed in the circumferential direction within a mechanical angle of 360 degrees according to the ratio of the number of salient teeth P and the number of status lots S. 11 is also unevenly distributed in the electromagnetic force distribution acting on the magnetic field 11.

  On the other hand, in the rotating electrical machine 100, by adopting a structure in which “the number of rotor teeth salient poles P / the number of status lots S = 2/3”, a uniform density distribution over the entire circumference of a mechanical angle of 360 degrees. As a result, the rotor 21 can be rotated in the stator 11 with high quality.

  As a result, the rotating electrical machine 100 can be rotated with high quietness by suppressing electromagnetic vibration while efficiently recovering the harmonic magnetic flux component as a field energy source.

  In this way, the rotating electrical 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 is self-excited. Since it can function as an electromagnet, it is possible to obtain an auxiliary rotational force that assists the main rotational force generated by the power supply to the armature coil 14 and to perform high-efficiency rotation. That is, in this rotating electrical machine 100, the q-axis harmonic magnetic flux can also be used as a field energy source, and a self-excited magnet torque with a higher mutual inductance coefficient than a structure in which no auxiliary pole is arranged on the q-axis. The density can be improved.

  And the induction coil 27 is formed in the concentrated winding used as the same circumference winding with respect to the radial direction of the rotor 21, is arranged in the circumferential direction of the rotor 21, and is connected in parallel. Further, the field coil 28 in which the field coils 281 and 282 are connected in series to form a single stage is formed in a concentrated winding in which the adjacent windings are opposite to each other in the radial direction of the rotor 21. Further, both end portions of the field coils 281 and 282 connected in series are further connected in series between the outer circumferential side and the axial center side of the rotor 21 in the circumferential direction.

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

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

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

  The diodes 29A and 29B are connected so as to have a phase difference of 180 degrees, and form a neutral-point clamped full-wave rectifier circuit that inverts one induced current and adds the half-wave rectified outputs. .

  As a result, in the rotating electrical machine 100, a high permeability magnetic steel supplementary core material 25 wound with the induction coils 27 </ b> A and 27 </ b> B is chained from the inner peripheral surface 12 a of the stator tooth 12 to the outer peripheral surface 22 a side of the rotor tooth 22. By passing the harmonic component superimposed on the magnetic flux that intersects, the induced current can be generated efficiently. The AC induced currents individually generated in the induction coils 27A and 27B are rectified by the diodes 29A and 29B, and then combined to flow as a DC field current in the field coils 28A and 28B connected in series. it can. In this way, the field coils 28A and 28B can be effectively self-excited to generate a magnetic field.

  Further, in this rotating electrical machine 100, the closed circuit 30 is configured by two sets of adjacent induction coils 27A and 27B and field coils 28A and 28B, and one set of diodes 29A and 29B. In the rotating electrical machine 100, the induction coils 27A and 27B in the closed circuit 30 are arranged in a concentrated manner in which they are wound in the same circumferential direction, and the field coils 28A and 28B are arranged in the entire circumferential direction of the rotor 21. It is wound in such a way that the winding directions wound alternately are alternated.

  For this reason, in the rotating electrical machine 100, the magnetization directions of the electromagnets generated in the field coils 28A and 28B by the application of the field current are alternated in the circumferential direction, and the N pole and the S are compared with the stator teeth 12 of the stator 11. The poles face each other alternately. That is, the rotating electrical machine 100 functions as a first electromagnet in which one of the field coils 28A and 28B for each closed circuit 30 faces the N pole with respect to the stator 11, and the other of the field coils 28A and 28B Field coils 28A and 28B are arranged so as to function as second electromagnets that make the S pole face the stator 11 and to function as electromagnets that make the same number of N or S poles face each other.

  As a result, since the rotating electrical machine 100 is separated for excitation and field use, it is avoided that the induction coils 27A and 27B and the field coils 28A and 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 complementary pole core material 25 constitutes an auxiliary pole portion around which the induction coils 27A and 27B are wound.

  Further, in this rotating electrical machine 100, six sets of the closed circuit 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 ”, it is possible to make the waveform of the harmonic magnetic flux linked to the induction coils 27A and 27B of the respective closed circuits 30 common. For this reason, the induced currents generated by the induction coils 27A and 27B without phase difference can be supplied to the field coils 28A and 28B as the equivalent field currents rectified by the diodes 29A and 29B, and the rotor 21 can be efficiently used. And it can be driven to rotate with high quality.

  With such a circuit configuration, for example, as shown in FIG. 4, all the induction coils 27A and 27B and the field coils 28A and 28B of the rotor 21 are rectified by two diodes 29A and 29B so as to function as electromagnets, respectively. Compared to the case where the circuit is used, the segmentation is made into six sets for each closed circuit 30 shown in FIG. 3, so that it is possible to prevent the winding resistances from being integrated and resulting in a high resistance value.

  For this reason, for example, in the case where the rotor 21 is rotated at a low speed in order to drive the vehicle at a low speed, the change in the amount of magnetic flux linked to the induction coils 27A and 27B is reduced and the induced current is also reduced. However, in the rotating electrical machine 100, the waste of the winding resistance of the induction coils 27A and 27B and the field coils 28A and 28B is reduced (the limit resistance value is reduced), and the field coils 28A and 28B are wasted power. It can be excited without waste. Thereby, a 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 induction voltage generated by the induction coils 27A and 27B and the field voltage generated by the field coils 28A and 28B can be dispersed and suppressed to a low voltage, and the copper loss generated by energizing the windings is also reduced. Can be reduced. Therefore, it is not necessary to consider that the integrated value of the induction voltage of the induction coils 27A and 27B and the field voltage of the field coils 28A and 28B does not exceed the upper limit, and the desired torque is generated because the voltage value becomes too high. Can be avoided.

  By the way, in order to reduce the resistance and voltage of the induction coils 27A and 27B and the field coils 28A and 28B, the induction coils 27A and 27B and the field coils 28A and 28B are individually connected in parallel as shown in FIG. Can also be achieved. However, each of the induction coils 27A and 27B and the field coils 28A and 28B having both ends connected in parallel generates an induced voltage that generates a magnetic flux in a direction that cancels the generation (change) of the magnetic flux. A current circulating in the parallel circuit of 27A and 27B and field coils 28A and 28B is generated, thereby preventing the generation of magnetic flux (magnetic force). For this reason, as the rectifying circuit of the rotating electrical machine 100, it is preferable to arrange six sets of the closed circuit 30 in the rotor 21.

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

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

  Therefore, as shown in FIG. 8, in the case of the series connection type shown in FIG. 4, at the beginning of the rotation of the rotor 21, it is not possible to obtain a magnet torque due to the application of a field current rectified the induced current. The rotor 21 is rotated only by a constant torque obtained by energizing the child coil 14. On the other hand, in the case of the segment type shown in FIG. 3, the magnet 21 obtained by the field coils 28A and 28B from the beginning of rotation is added to the torque obtained by energizing the armature coil 14 to The rotation torque can be gradually increased as the magnet torque increases, and the rotor 21 can be rotated with high efficiency.

  Specifically, when the rotor 21 is rotating at a low speed and the energization current to the armature coil 14 is small and the load is low, sufficient spatial harmonic components do not interlink with the induction coils 27A and 27B, and the series connection type In some cases, the internal resistance is large and the conduction of the induced current is hindered. On the other hand, in the segment connection type, since the internal resistance is small and energization of the induced current is not hindered, the magnet torque can be effectively generated and used.

  In addition, when the rotor 21 rotates at a low speed and the energization current to the armature coil 14 is large and the load is high, sufficient spatial harmonic components are linked to the induction coils 27A and 27B. Since the resistance is large and the voltage drop is large, a sufficient induced current cannot be applied. On the other hand, in the case of the segment type, since the internal resistance is small and the voltage drop is also small, it is possible to use the magnet torque effectively by energizing the induced current sufficiently.

  Further, when the rotor 21 rotates at a high speed, the magnetic flux fluctuation (frequency) due to the spatial harmonic component interlinked with the induction coils 27A and 27B is large and the induction coils 27A and 27B are highly induced regardless of whether the rotor 21 is at a low load or a high load. When the voltage is generated, the complementary core material 25 is magnetically saturated and the inductance is lowered. Therefore, even in the case of the series connection type, the magnet torque can be generated and used without being interrupted by the induction current.

  Then, as shown in FIG. 9, the rotating electric machine 100 has a constant shape by pressure molding after winding the armature coil 14 of the stator 11, the induction coil 27 of the rotor 21, and the field coil 28. The coil end cover 110 is attached and covered to the outer end surfaces on both sides of the rotor 21 in which the axially outer shape of the shaft (drive shaft) 101 is constant.

  Specifically, the armature coil 14, the induction coil 27, and the field coil 28 are the main body portions of the saddle-shaped portions 12 c and 22 c formed on the front end side of the stator teeth 12 and the rotor teeth 22 and the complementary core material 25. The outer end 32 of the coil 31 is formed into a winding coil that is circulated in a shape that can be inserted into the inside, and after insertion into the coil, the outer end 32 is spaced from the side surfaces 12b, 22b, and 31b. Thus, the winding wound in a coil shape is shaped so as to be in close contact with the side surfaces 12b, 22b, 31b.

  The stator 11 and the rotor 21 have loop-shaped portions 14L, 27L, and 28L (illustration of 14L is omitted) as fixed portions on the outer periphery in the radial direction of the rotor 21 and on both outer sides in the axial direction of the shaft 101. The coil 14, the induction coil 27, and the field coil 28 are connected and fixed by being bound to the loop shape portions 14L, 27L, and 28L through a binding string (linear member) 41 over the entire circumference ( (See FIG. 12). The binding string 41 is formed into a sufficiently strong filament member by knitting synthetic fibers made of, for example, PPS (Polyphenylenesulfide) resin into a tube shape, and the strength is improved by being impregnated with varnish or the like. improves.

  Further, as shown in FIG. 10, the induction coil 27 and the field coil 28 are bound by passing the binding string 41 passed through the loop-shaped portions 27L and 28L through the ring member 45 fixed to the shaft 101. Thereby, it is firmly installed on the rotor 21 side and is rotated integrally with the shaft 101.

  As shown in FIG. 11, the ring member 45 is fitted in the axial direction by fitting a key protrusion 46 formed on the inner peripheral surface 45 c side of the shaft hole into the key groove 106 of the shaft 101, as in the rotor 21. By being positioned by sliding, the rotor 21 is mounted so as to rotate integrally with the shaft 101 located on both outer sides in the axial direction.

  A plurality of the ring members 45 are formed so that bolt holes 47 through which fastening hexagon bolts 118 described later pass and bundling holes (connecting portions) 48 through which the bundling cord 41 passes are opened on both sides in the axial direction of the shaft 101. The bundling hole 48 is formed so that a cutout hole 48a connected to the outer peripheral surface side of the ring member 45 is formed so that the bundling string 41 can be passed therethrough.

  The induction coil 27 and the field coil 28 (281, 282) are firmly fixed to the shaft 101 by being firmly bound to the shaft 101 by connecting both outer sides in the axial direction of the rotor 21 and the ring member 45 with a binding string 41. It is supposed to be.

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

  The binding procedure by the binding string 41 is to bind one set each of the loop shape portion 27L of the induction coil 27, the loop shape portion 281L of the field coil 281 and the loop shape portion 282L of the field coil 282. The case of doing this will be described as an example as follows.

  First, the binding string 41 is pulled out from the notch hole 48a through the binding hole 48 of the ring member 45 (step S1), and after passing outside the loop shape portions 281L and 282L of the field coils 281 and 282 (step S2). ), Inserted into the loop-shaped portions 281L and 282L from the opening 282Lo on the outer peripheral surface 22a side of the rotor teeth 22 and pulled out from the opening 281Li on the opposite side (axial center side) (step S3), and brought into a state of being wound once.

  Next, the binding string 41 pulled out from the opening 281Li on the axial center side of the loop shape portions 281L and 282L of the field coils 281 and 282 is again passed through the outside of the same loop shape portions 281L and 282L, and then the rotor teeth. 22 is inserted into the loop-shaped portions 281L and 282L from the opening 282Lo on the outer peripheral surface 22a side, and is pulled out from the opening 281Li on the opposite side (axial center side) (steps S4 and S5), so that a total of two rounds is wound. .

  Next, the binding string 41 pulled out again from the opening 281Li on the axial center side of the loop-shaped portions 281L and 282L is inserted into the notch hole 48a of the adjacent binding hole 48 with the bolt hole 47 of the ring member 45 interposed therebetween, and the outer disk It is pulled out from the binding hole 48 of the shape plane 45a (step S6), and is brought into a state where it is also wound around the ring member 45.

  Thereafter, after the binding string 41 pulled out from the binding hole 48 of the ring member 45 is passed through the outside between the adjacent loop shape portions 28L and the outside of the loop shape portion 27L of the induction coil 27 (step S7), the complementary pole The core material 25 is inserted into the loop-shaped portion 27L from the opening 27Lo on the outer end surface 32a side and pulled out from the opening 27Li on the opposite side (axial side) (step S8), and is wound once.

  Next, the binding string 41 pulled out from the opening 27Li on the axial center side of the loop-shaped portion 27L of the induction coil 27 is drawn into the same binding hole 48 of the ring member 45 from the disk-shaped flat surface 45a side (step S9). By pulling out from 48a, the ring member 45 is wound again. And it winds over the perimeter of the rotor 21 by repeating this above-mentioned procedure from step S1.

  Thereby, the induction coil 27 and the field coils 281 and 282 are firmly bound to the shaft 101 and integrally rotate by connecting the loop-shaped portions 27L, 281L, and 282L and the ring member 45 with the binding string 41. Fixed to. In particular, the complementary core member 25 is supported not only by fitting the tip portion 36 of the leg portion 35 into the support groove 39 of the rotor tooth 22 and supporting the rotor tooth 22 but also by binding the induction coil 27 with the binding string 41. 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 portion 101a side and the rotating end portion 101b side of the shaft 101. Holders 111 are formed at a plurality of locations on the outer surface 110 s on the outer side in the axial direction of the coil end cover 110 </ b> A, and a plurality of sets of diodes 29 </ b> A and 29 </ b> B are installed for each closed circuit 30. The coil end cover 110B is not provided with the holder 111 and is formed in a thin and substantially identical shape to reduce the weight, but the coil end cover 110A may be diverted.

  The diodes 29A and 29B are accommodated in a case (package) 121, and the case 121 is easily fitted into the plurality of holders 111 formed on the outer surface 110s of the coil end cover 110A to connect the connection pin 29c. The closed circuit 30 is formed by connecting the end portions of the winding coils of the induction coil 27 and the field coil 28 to the connecting end portions 27p, 27q, and 28p. In the present embodiment, 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, but 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 that the diodes 29A and 29B (case 121) can be easily exchanged so that the connection can be conducted simply by inserting the connection pin 29c.

  As shown in FIG. 13, the holder 111 is disposed at a position that is equally spaced in correspondence with 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 therein. Are formed in a continuous hole shape with the same shape in the circumferential direction.

  The holder 111 is formed with a screw hole 112 on the bottom side for screwing a tightening bolt 119 passing through the through hole 121b of the case 121, and the coil end cover 110A is provided with the case 121 set in the holder 111. The fastening bolt 119 is used for attachment.

  As with 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 shaft center hole into the key grooves 106 of the shaft 101. By positioning in such a manner, the shaft 101 is attached to the shaft 101 so as to rotate integrally therewith.

  The coil end covers 110 </ b> A and 110 </ b> B are formed with bolt holes 117 at the same positions as the bolt holes 47 of the ring member 45, and fastening hexagonal bolts 118 to be described later are inserted into the bolt holes 47 and 117. By screwing 21b through the ring 21b, the ring member 45 can be sandwiched as a spacer and fastened to the rotor 21 without loosening.

  The coil end covers 110A and 110B are formed in a bottomed and short cylindrical shape, and the outer peripheral wall 114 around the outer surface 110s protrudes at a position corresponding to the rotor slot 23 between the rotor teeth 22. A portion 114a is formed.

  As a result, the coil end cover 110 </ b> A is arranged with the holder 111 (the case 121) uniformly in the circumferential direction of the outer surface 110 s (on the circumference around the rotation axis), so that the center of gravity coincides with the axis of the shaft 101. The rotor 21 can be fixed so as to rotate integrally, so that the rotation quality of the rotor 21 is not deteriorated. In the present embodiment, the case where the holders 111 are arranged at equal intervals 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 thereto. For example, the holders 111 may be arranged on the outer peripheral surface side of the rotor 21, and may be arranged at positions where the rotational centers are unequal so that the center of gravity coincides with the axis.

  The coil end covers 110 </ b> A and 110 </ b> B have both ends of the outer end portion 32 of the main body portion 31 of the complementary core member 25 by fitting the convex portions 114 a of the outer peripheral wall 114 between the rotor slots 23 of the rotor teeth 22. It can attach in the state which presses down the side, and it can suppress that rotation quality deteriorates by hold | suppressing that the complementary pole core material 25 tends to move with the centrifugal force at the time of rotation.

  Further, the coil end cover 110A has a shaft by a fastening hexagon bolt 118 while an end plate 136A described later is positioned further outward so that the circuit board (connection board) 122 is sandwiched between the outer end face of the rotor 21. 101 is screwed.

  As shown in FIG. 15, the circuit board 122 is formed in a shape that can be fitted to the back side of the outer surface 110 s of the coil end cover 110 </ b> A, and the key protrusion 126 that fits into the key groove 106 of the shaft 101 has an axial hole. A key groove 127 which is formed on the inner peripheral edge 122c and fits into the key protrusion 115 formed on the inner peripheral surface side of the outer peripheral wall 114 of the coil end cover 110A shown in FIG. 14 is formed in the outer peripheral edge 122b. . The circuit board 122 is also formed with a bolt hole 128 at the same position as the bolt hole 47 of the ring member 45. By inserting a fastening hexagonal bolt 118, which will be described later, into the bolt hole 128 and fastening the coil end, It can be fixed between the cover 110A and the ring member 45 without loosening to the rotor 21.

  As a result, as shown in FIG. 16, the circuit board 122 fits the key protrusion 115 in the outer peripheral wall 114 of the coil end cover 110A into the key groove 127 of the outer peripheral edge 122b so that it cannot rotate and is positioned on the back side of the outer surface 110s. The key protrusions 116 and 126 together with the coil end cover 110A can be fitted into the key groove 106 of the shaft 101 and attached to the shaft 101 so as to rotate integrally therewith.

  The circuit board 122 has a plurality of through holes 123a into which connection end portions 27p, 27q, 281p, 281q, 282p, 282q on both ends of the winding coil 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 form the closed circuit 30 by connecting the diodes 29A and 29B to the induction coil 27 and the field coil 28.

  The through hole 123a is opened in the conduction patterns 124a to 124d, and the connection ends 27p, 27q, 281p, 281q, 282p, and 282q of the induction coil 27A and the field coils 281 and 282 to be inserted are connected to the conduction patterns 124a to 124d. It can be easily connected by soldering.

  The through hole 123b is opened outside the formation region of the conductive patterns 124a to 124d, and the induction coil 27 and the field coils 281 and 282 are inserted into the conductive patterns 124a to 124d without conducting contact. The connection end portions 27p, 27q, and 282p can be pulled out to be connectable to the connection pins 29c of the diodes 29A and 29B.

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

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

  The field coil 28A (282) and the winding coils of the induction coils 27A and 27B inserted into the through hole 123b are inserted into the through hole 110d formed in the coil end cover 110A shown in FIG. 14 and pulled out to the outer surface 110s side. Thus, the work of conducting the conductive connection to the connection pins 29c of the diodes 29A and 29B is performed, and the through holes 110d are connected to the connection pins 29c of the diodes 29A and 29B (case 121) fitted into the holder 111 of the coil end cover 110A. It is formed in the position corresponding to.

  As a result, the field coil 28A (282) inserted into the through hole 123b, the connection end portion 28p of the induction coils 27A and 27B, and the connection end portions 27p and 27q of the induction coils 27A and 27B are easily electrically connected by direct soldering or the like. Can be connected.

  The rotating electrical 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 string 41 using the ring member 45 (not shown). For example, PPS resin is injected and filled into the internal gap after being set in the molding space (cavity) of the molding die.

  Here, when the shaft 101 is set vertically, the molding die has an inner peripheral surface with an inner diameter facing the outer peripheral surface 22a of the rotor teeth 22 of the rotor 21 with almost no gap, and an induction coil 27 and a field magnet. A forming space is formed by including a bottom surface and a ceiling surface close to the loop-shaped portions 27L and 28L on both ends in the axial direction of the coil 28. The molding die is formed such that the same shape as the outer peripheral wall 114 of the coil end covers 110A and 110B protrudes from the inner peripheral surface of the molding space. Further, 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 out 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 closest to the coil.

  On the other hand, the winding inserted into the through hole 123a of the circuit board 122 is cut to a length sufficient to make the connection end portions 27p, 27q, and 28p self-supporting with its own rigidity. The windings to be inserted into the through holes 123b of the circuit board 122 are inserted into the through holes 110d opened at positions corresponding to the connection pins 29c of the diodes 29A and 29B to be fitted into the holder 111 of the coil end cover 110A and soldered. And cut to a length sufficient for conducting the conductive connection.

  Thus, the rotor 21 is set up in a molding die and covered with the ceiling surface side in a state where the winding to be inserted into the through hole 123b of the circuit board 122 is pulled out from the through hole on the ceiling surface side. The connection end portions 27p, 27q, 28a, and 28b of the winding end portions that are inserted into the through holes 123a of the circuit board 122 that is self-supporting can be inserted and held in the through holes.

  Thereafter, when the PPS resin is injected and filled into the molding die, the filling resin is prevented from entering the locations that hinder the attachment of the outer peripheral walls 114 of the coil end covers 110A and 110B attached to both ends of the rotor 21. Then, PPS resin can be penetrated into the rotor 21 so as to enter the gaps between and around the windings of the induction coil 27 and the field coil 28 to be filled. In this way, it is possible to stabilize the characteristics and improve the durability by restricting the movement of the winding.

  Also, the PPS resin filled in the rotor slot 23 of the rotor 21 is solidly covered with the induction coil 27 and the field coil 28 in a smooth and continuous manner on the outer peripheral surface 22a of the rotor tooth 22 and solidifies. Therefore, it is possible to reliably restrict the induction coil 27 and the field coil 28 from moving due to the centrifugal force during rotation. Specifically, in addition to the induction coil 27 and the field coil 28 being restricted by striking the hook-shaped portion 22c of the rotor tooth 22, the induction coil 27 and the field coil 28 can be supported with higher reliability.

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

  Then, the rotor 21 after injection-filling the PPS resin taken out from the molding die has an induction coil 27, a field coil 28, and the like together with the rotor teeth 22 and the supplementary core material 25 as shown in FIG. It can be taken out as a resin mold Mo that transfers the molding space while positioning and fixing (supporting). The rotor 21 has a conductor projection on the ceiling surface Mou of the resin mold Mo by causing the connection ends 27p, 27q, 28p, 28q of the windings of the induction coil 27 and the field coil 28 to stand upright (self-standing) with their own rigidity. It can be provided as MoP.

  For this reason, the rotor 21 only covers the circuit board 122 while positioning it (closes it to the resin mold Mo side), and inserts the conductor protrusion MoP into the through hole 123a of the circuit board 122 to the conductive pattern 124 (124a to 124d). Soldering or the like can be performed, and the connection ends 27p, 27q, 28p, and 28q of the windings of the induction coil 27 and the field coil 28 can be easily connected.

  In addition, the rotor 21 is provided with a winding of the induction coil 27 and the field coil 28 whose end portions are connection end portions 27p, 27q, 28p, and 28q on the ceiling surface Mou of the resin mold Mo as a conductor line MoL. it can.

  For this reason, the rotor 21 appropriately inserts and pulls out 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 the coil end cover 110A is attached to the rotor 21, the excess portions of the conductor line MoL are cut and soldered, whereby the connection ends 27p, 27q of the windings of the induction coil 27 and the field coil 28 are connected. 282p can be easily connected to the connection pins 29c of the diodes 29A and 29B fitted into the holder 111.

  At this time, the coil end covers 110A and 110B which are taken out from the molding die and attached together with the circuit board 122 are arranged on the outer peripheral surface 22a of the rotor teeth 22 on 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 portion 114a of the outer peripheral wall 114 is fitted between the rotor teeth 22 so that the outer end portion 32 of the main body portion 31 of the auxiliary pole core material 25 is inserted. The outer end surface 32a can be pressed.

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

  As shown in FIG. 20, the end plates 136A and 136B are formed of a non-magnetic metal plate, for example, a brass plate, into 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 made so as not to affect etc. One end plate 136A functions as a heat radiating plate for exchanging heat generated during the function of the diodes 29A and 29B and releasing it to the outside by closely contacting one surface of the case 121 as a heat radiating surface (for example, an aluminum base surface) 121a. It is supposed to be. The end plates 136A and 136B are also formed so as to correct the deviation of the shaft 101 (around the rotation axis) according to various components installed in the rotating electrical machine 100, and function as a balance correction plate. The rotation balance is ensured.

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

  As described above, the rotating electrical machine 100 is configured to tighten the end plates 136A and 136B with the fastening hexagon bolts 118 on both ends of the rotor 21 where the coil end covers 110A and 110B and the circuit board 122 are attached and the closed circuit 30 is installed. The rotor 21 can be set in the stator 11.

  Here, the rotating electrical machine 100 has a coupling end 101a on one end side of the shaft 101 formed in a knurled shape, for example, in a coupling hole (not shown) provided on the mechanism side constituting the power transmission path on the vehicle side. It is designed to be inserted and connected so as not to be relatively rotatable. The rotating electrical machine 100 is installed and installed by screwing a housing (not shown) formed in a shape covering the entire stator 11 to the vehicle side.

  As shown in FIG. 9, 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 positioned in the housing. It is like that. The resolver 131 detects the rotation of the shaft 101 by fixing the rotor resolver 132 to the rotating end portion 101b of the shaft 101 so as to rotate integrally with the holding ring 139 and fixing the resolver stator 133 to the housing side so as not to rotate. It is supposed to be.

  For this reason, in the rotating electrical machine 100, the diodes 29A and 29B (case 121) are installed on the coil end cover 110A arranged on the side of the connecting end 101a opposite to the rotating end 101b on which the resolver 131 is installed. It can be avoided that noise generated during operation of the diodes 29A and 29B affects the resolver 131 and lowers the detection accuracy.

  As described above, in the rotating electrical machine 100 of the present embodiment, the rotor 21 is set in the molding die and PPS resin is injected and filled, so that the PPS is formed in the gap in the rotor slot 23 between the rotor teeth 22. Resin can be inserted and fixed. For this reason, the induction coil 27 and the field coil 28 in the rotor slot 23 can be supported in a state where they cannot be deformed or moved when the PPS resin enters the gap and comes into close contact with the winding. Further, the complementary core material 25 in the rotor slot 23 is moved by the centrifugal force in addition to the tip portion 36 of the leg portion 35 being fitted and supported in the support groove 39 of the rotor tooth 22. It is supported so that it may be restrict | limited by the 22 hook-shaped part 22c.

  Further, the induction coil 27 and the field coil 28 are firmly passed through the binding string 41 to the binding hole 48 of the ring member 45 fixed to the shaft 101 and the loop-shaped portions 27L and 28L on both ends in the axial direction of the rotor 21. Since they are bound, it is possible to restrict movement by centrifugal force. In particular, since the induction coil 27 is supported by the leg portion 35, the induction coil 27 can be supported more immovably by the binding string 41 together with the complementary core material 25. The ring member 45 functions as a spacer and restricts deformation of the loop shape portions 27L and 28L of the induction coil 27 and the field coil 28 when the end portion in the axial direction of the rotor 21 is not filled with PPS resin. Space can be secured.

  As described above, the rotating electrical machine 100 according to the present embodiment prevents the field coil 28, the complementary core material 25, and the induction coil 27 in the rotor slot 23 of the rotor 21 from being damaged by vibration during operation. Therefore, the high-quality rotating electrical machine 100 can be provided.

  Furthermore, in the rotating electrical machine 100 of the present embodiment, the connection ends 27p, 27q, 28p, and 28q of the windings of the induction coil 27 of the auxiliary pole core material 25 and the field coil 28 of the rotor tooth 22 are connected to the circuit board 122. By simply inserting into the through holes 123a of the patterns 124a to 124d, they can be easily connected and connected, and furthermore, a plurality of closed circuits 30 can be easily formed by connecting to the connection pins 29c of the diodes 29A and 29B. it can.

  In addition, since an AC induced current is generated and rectified in each of the plurality of closed circuits 30 to obtain a DC field current, the current value (load) rectified by the diodes 29A and 29B is kept small, and the induced voltage and It can be avoided that the winding resistance becomes unnecessarily high. Thereby, copper loss can be suppressed and electromagnetic force (magnet torque) can be generated efficiently.

  As described above, the rotating electrical machine 100 of the present embodiment can recover the leakage magnetic flux (harmonic) linked from the stator 11 side to the rotor 21 side to generate field energy, and generate torque with high efficiency. Thus, the rotating electrical machine 100 that can be rotated and driven can be provided.

  Further, since the diodes 29A and 29B are set in the holder 111 of the coil end cover 110A attached to the connecting end portion 101a side axially separated from the resolver 131 on the rotating end portion 101b side of the shaft 101, rectification of the induced current is performed. Therefore, it is possible to reduce the occurrence of noise that affects the rotation detection of the resolver 131, and to prevent the rotation quality from being deteriorated.

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

  In this coil end cover 110A, the holders 111 on the outer surface 110s side are evenly arranged in the circumferential direction around the axis so as to correspond to the plurality of closed circuits 30, so that the diodes 29A, 29B (case 121) ) Can be set to coincide with the center of the axis even in the set state, and the rotation quality is prevented from deteriorating due to the layout of the diodes 29A and 29B.

  Here, as another aspect of the present embodiment, when the series circuit (series connection type) shown in FIG. 4 is employed to reduce the number of diodes 29A and 29B used, as shown in FIG. A structure is adopted in which one case 121 accommodating one set of diodes 29A and 29B is set in one holder 111 on the outer surface 210s of a coil end cover 210A having a structure substantially similar to 110A. In this other aspect, the portion other than the one holder 111 can be formed thin to reduce the weight. In this case, for example, the strength may be ensured by forming a plurality of ribs 211 extending radially from the shaft 101 (axial center) side. By increasing the number of ribs 211, it is preferable to avoid that the center of gravity is shifted from the axial center.

  Furthermore, as another aspect, although illustration is omitted, in the present embodiment, the case where the induction coil 27 is arranged in the complementary core material 25 installed in the rotor slot 23 will be described as an example. It is not limited to. For example, the induction coil 27 may be arranged on the outer peripheral surface 22a side close to the stator 11 of the rotor teeth 22 and the field coil 28 may be arranged on the shaft 101 (axial center) side. In this case as well, as in this embodiment, segmentation is performed for each closed circuit 30 to suppress the current value rectified by the diodes 29A and 29B, and the induced voltage and winding resistance are unnecessarily increased. Therefore, it is possible to avoid the copper loss and efficiently generate the electromagnetic force.

  In addition, the stator 11 and the rotor 21 are not limited to being formed of a laminated structure of electromagnetic steel plates. For example, a soft magnetic composite material (Soft Magnetic Composites) in which the surface of magnetic particles such as iron powder is insulation-coated. Further, a powder magnetic core produced by iron powder compression molding and heat treatment, so-called SMC core may be employed.

Further, the rectification processing of the induced current is not limited to the diodes 29A and 29B, and other semiconductor elements such as switching elements may be mounted.
The acquisition of magnet torque is not limited to the field coils 28A and 28B, and a permanent magnet may be used in combination.

  Moreover, the rotary electric machine 100 is not limited to vehicle-mounted use, For example, it can employ | adopt suitably as drive sources, such as a wind power generation and a machine tool.

  While embodiments of the invention have been disclosed, it will be apparent to those skilled in the art that changes may be made without departing from the scope of the 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 (Saliency Portion)
22c Cone-shaped part 23 Rotor slot 25 Complementary core material (complementary part)
27, 27A, 27B Inductive coils 27L, 28L, 281L, 282L Loop shape part (fixed part)
27p, 27q, 28p, 28q, 281p, 281q, 282p, 282q Connection end 28, 28A, 28B, 281, 282 Field coil 29A, 29B Diode (rectifier element)
29c Connection pin 30 Closed circuit 31 Body part 32 Outer end part 32a Outer end face 35 Leg part (support part)
36 Tip 39 Support groove 41 Bundling string (linear member)
45 Ring member (spacer)
47 Bolt hole 48 Bundling hole (connecting part)
48a Notch hole 100 Rotating electrical machine 101 Shaft (Rotating shaft)
110, 110A, 110B, 210A Coil end covers 110d, 123a, 123b Through holes 111, 211 Holder 121 Case 122 Circuit board (wiring board)
124a to 124d Conductive patterns 136A, 136B End plate 211 Rib 211 Holder G Air gap Mo Resin mold

Claims (6)

A rotating electrical machine comprising: a stator having an armature coil that generates magnetic flux by energization; and a rotor that rotates by passage of the magnetic flux,
The rotor functions as an electromagnet when the induction current is energized, and a plurality of auxiliary pole portions wound with an induction coil that generates an induction current by interlinking the spatial harmonic components superimposed on the magnetic flux. A plurality of salient pole portions wound with field coils to be wound,
The auxiliary pole portion includes a main body portion around which the induction coil is wound, and support portions that are connected to the main body portion and are supported on opposite side surfaces of the adjacent salient pole portions,
A rotating electrical machine in which a resin material is injected into a slot of the salient pole portion where the induction coil, the field coil, and the auxiliary pole portion are located.   The rotating electrical machine according to claim 1, further comprising a spacer that is fixed to an end portion side in the axial direction of the rotor and that secures a space on the end portion side in the axial direction of the induction coil and the field coil.   The plurality of salient pole portions and the plurality of complementary pole portions have a fixed portion on a radially outer periphery of the rotor, and the induction coil and the field coil include a connecting portion and a fixed portion formed in the spacer. The rotating electrical machine according to claim 2, wherein a linear member is connected and fixed to the rotating electrical machine.   The end portions of the induction coil and the field coil in the axial direction of the rotor are covered with the resin material injected into the slots intruding between windings. The rotating electrical machine according to any one of claims.   5. The induction coil and the field coil are connected by connecting the end portions of the windings through a conductive pattern formed on a wiring board. The rotating electrical machine described in 1. A plurality of rectifying elements that rectify the induction current generated in the induction coil and energize the field coil as a field current;
The rectifying element is housed in a holder formed on an outer surface side of a cover that covers an end portion side of the rotor in the axial direction, and a connection terminal of the rectifying element is a winding of the induction coil and the field coil The rotating electrical machine according to any one of claims 1 to 5, wherein the rotating electrical machine is electrically connected to and connected to an end of the rotating electrical machine.

Images