Wound field type rotating electric machine

Abstract

To suppress excessive heat in a rotor.SOLUTION: A wound field type rotating electric machine 40 includes a stator 50 having a stator winding 52, a rotor 60 having a rotor core 61 and a magnetic field winding 70, and an electric circuit module 102 provided in the rotor 60 in an integrally rotatable manner to have an electrical component connected to the magnetic field winding 70. The rotor 60 includes, as electric circuit module 102, a first circuit module 141 arranged on a first rotor end part X1 side being one side in an axial direction of the rotor core 61, and a second circuit module 142 arranged on a second rotor end part X2 side being the other end side in the axial direction of the rotor core 61.SELECTED DRAWING: Figure 8

Description

Technical Field

[0001] The disclosure in this specification relates to a wound-field rotating electrical machine.

Background Art

[0002] In a wound-field rotating electrical machine, the rotor has a rotor core having a plurality of main pole portions (magnetic salient pole portions) arranged in the circumferential direction, and a field winding wound around the main pole portions. Also, a configuration is known in which a circuit module equipped with capacitors and diodes as electrical components is provided on one side of both axial sides of the rotor (see Patent Document 1). In the circuit module, components such as capacitors are held by a component holder.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the rotor configured as described above, the circuit module is arranged at a position on one axial side of the rotor. Therefore, when the electrical components in the circuit module generate heat due to energization, heat concentrates on one axial side of the rotor. For example, when the number of electrical components in the circuit module increases, the heat bias becomes remarkable. In this case, there is a concern that the circuit module and its vicinity in the rotor may become locally overheated.

[0005] The present disclosure has been made in view of the above circumstances, and an object thereof is to provide a wound-field rotating electrical machine capable of suppressing overheating in the rotor.

Means for Solving the Problems

[0006] The present disclosure is A stator having a stator winding, a rotor having a rotor core and a field winding wound around the rotor core, an electric circuit module rotatably provided integrally with the rotor and having an electric component connected to the field winding, which is a wound-field type rotating electric machine having the rotor includes, as the electric circuit module, a first circuit module disposed on the side of a first rotor end portion which is one axial end side of the rotor core, and a second circuit module disposed on the side of a second rotor end portion which is the other axial end side of the rotor core.

[0007] In a wound-field type rotating electric machine, an electric circuit module including an electric component connected to a field winding is configured to include a first circuit module disposed on the side of a first rotor end portion which is one axial end side of the rotor core, and a second circuit module disposed on the side of a second rotor end portion which is the other axial end side of the rotor core. As a result, when the electric component in the electric circuit module generates heat due to energization, the heat is dispersed to both axial sides of the rotor. As a result, it is possible to suppress the rotor from becoming overheated.

Brief Description of the Drawings

[0008]

Figure 1

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Figure 8

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Figure 20

Embodiments for Carrying Out the Invention

[0009] Hereinafter, embodiments in which the winding field type rotating electrical machine according to the present disclosure is embodied will be described with reference to the drawings. The rotating electrical machine is used, for example, as a driving power source in an electric vehicle such as an electric vehicle or a hybrid vehicle.

[0010] First, a control system including a rotating electrical machine will be described with reference to FIG. 1. The control system includes a DC power supply 10, an inverter 20, a control device 30, and a rotating electrical machine 40. The rotating electrical machine 40 is a self-excited wound-field synchronous machine. For example, the rotating electrical machine 40, the inverter 20, and the control device 30 may be configured as an electromechanical integrated drive device, or each of the rotating electrical machine 40, the inverter 20, and the control device 30 may be composed of respective components.

[0011] The rotating electrical machine 40 includes a housing 41, a stator 50, and a rotor 60 housed in the housing 41. The rotating electrical machine 40 of the present embodiment is an inner rotor type rotating electrical machine in which the rotor 60 is disposed radially inside the stator 50.

[0012] The stator 50 includes a stator core 51 and a stator winding 52. The stator winding 52 is composed of, for example, copper wire, and includes U, V, and W phase windings 52U, 52V, and 52W arranged in a state of being shifted from each other by 120° in electrical angle.

[0013] The rotor 60 includes a rotor core 61 and a field winding 70. The field winding 70 may be composed of, for example, aluminum wire having a small specific gravity and being easy to form. Note that the field winding 70 is not limited to aluminum wire, and may be, for example, copper wire or CNT (carbon nanotube). A rotating shaft 32 is assembled in a central hole of the rotor core 61. The rotating shaft 32 is rotatably supported by the housing 41 by bearings 42 and 43.

[0014] As shown in FIG. 2, the inverter 20 includes a series connection body of upper arm switches SUp, SVp, SWp of U, V, and W phases and lower arm switches SUn, SVn, SWn of U, V, and W phases. At the connection points of the upper arm switches SUp, SVp, SWp and the lower arm switches SUn, SVn, SWn in each phase, the first ends of the U, V, and W phase windings 52U, 52V, 52W are connected. The second ends of the U, V, and W phase windings 52U, 52V, 52W are connected at the neutral point. That is, in this embodiment, the stator winding 52 is star-connected. However, the stator winding 52 may be delta-connected. In this embodiment, each of the switches SUp to SWn is, for example, an IGBT. A freewheel diode is connected in anti-parallel to each of the switches SUp to SWn.

[0015] The positive terminal of the DC power supply 10 is connected to the collectors of the upper arm switches SUp, SVp, SWp of each phase. The negative terminal of the DC power supply 10 is connected to the emitters of the lower arm switches SUn, SVn, SWn of each phase. A smoothing capacitor 11 is connected in parallel to the DC power supply 10.

[0016] Subsequently, the stator 50 and the rotor 60 will be described with reference to FIG. 3.

[0017] Both the stator 50 and the rotor 60 are arranged coaxially with the rotation shaft 32. In the following description, the direction in which the rotation shaft 32 extends is defined as the axial direction, the direction extending radially from the center of the rotation shaft 32 is defined as the radial direction, and the direction extending circumferentially around the rotation shaft 32 is defined as the circumferential direction.

[0018] The stator core 51 is composed of a laminated steel sheet made of a soft magnetic material, and has an annular back yoke 51a and a plurality of teeth 51b protruding radially inward from the back yoke 51a. A plurality of slots 54 arranged in the circumferential direction are formed between adjacent teeth 51b. By accommodating the phase windings of each phase in these slots 54 in a predetermined order, the stator winding 52 is constituted. For example, in the stator 50, a segment coil structure using a plurality of conductor segments may be adopted. However, the structure of the stator winding 52 is arbitrary.

[0019] The rotor core 61 is made of a soft magnetic material and is constituted by, for example, a laminated steel sheet. The rotor core 61 has a cylindrical cylindrical portion 61a and a plurality of main pole portions 62 protruding radially outward from the cylindrical portion 61a. The field winding 70 is wound around the main pole portion 62 by concentrated winding. In the present embodiment, eight main pole portions 62 are provided at equal intervals in the circumferential direction.

[0020] The field winding 70 includes a first winding portion 71 and a second winding portion 72. The first winding portion 71 is wound around each main pole portion 62 on the radially outer side, and the second winding portion 72 is wound around the radially inner side of the first winding portion 71. In each main pole portion 62, the winding directions of the first winding portion 71 and the second winding portion 72 are the same as each other. Also, among the main pole portions 62 adjacent to each other in the circumferential direction, the winding directions of the winding portions 71, 72 wound around one of them and the winding directions of the winding portions 71, 72 wound around the other are opposite to each other. For this reason, the magnetization directions of the main pole portions 62 adjacent to each other in the circumferential direction are opposite to each other. In the rotor 60, a plurality of magnetic poles (field poles) arranged in the circumferential direction are formed by each main pole portion 62 in the rotor core 61 and the field winding 70 wound around each main pole portion 62.

[0021] FIG. 4 is a diagram showing an electric circuit on the rotor 60 side including the first and second winding portions 71 and 72. The first winding portion 71 and the second winding portion 72 are connected in series by connecting the second end 71b of the first winding portion 71 and the first end 72a of the second winding portion 72 to each other. A diode 91 and a capacitor 92 are connected in parallel to the second winding portion 72 at the second end 71b of the first winding portion 71. Also, a diode 93 and a capacitor 94 are connected in series to the series connection body of the first winding portion 71 and the second winding portion 72, respectively. In the following description, the diode 91 and the capacitor 92 connected in parallel to the second winding portion 72 are also referred to as a parallel diode 91 and a parallel capacitor 92, respectively. Also, the diode 93 and the capacitor 94 connected in series to the series connection body of the first winding portion 71 and the second winding portion 72 are also referred to as a series diode 93 and a series capacitor 94, respectively. The capacitors 92 and 94 are, for example, ceramic capacitors or film capacitors.

[0022] The cathode of the parallel diode 91 is connected to the first end 72a of the second winding portion 72, and the anode is connected to the second end 72b of the second winding portion 72. Thereby, in the closed circuit including the second winding portion 72 and the parallel diode 91, current flows in one direction from the anode side to the cathode side of the parallel diode 91. Also, the cathode of the series diode 93 is connected to the first end 71a of the first winding portion 71, and the anode is connected to the second end 72b of the second winding portion 72. Thereby, the field current flowing through each winding portion 71 and 72 is rectified. In the present embodiment, the number of turns of the second winding portion 72 is larger than the number of turns of the first winding portion 71.

[0023] Returning to the description of FIG. 2, the control device 30 is an electronic control unit (ECU) mainly composed of a microcomputer 31. The microcomputer 31 includes a CPU (Central Processing Unit). The functions provided by the microcomputer 31 can be provided by software recorded in a physical memory device and a computer that executes it, software only, hardware only, or a combination thereof. For example, when the microcomputer 31 is provided by an electronic circuit that is hardware, it can be provided by a digital circuit including a number of logic circuits or an analog circuit. For example, the microcomputer 31 executes a program stored in a non-transitory tangible storage medium as a storage unit provided therein. The program includes a program for controlling the rotating electrical machine 40. By executing a set of instructions constituting the program, a method corresponding to the program is executed. The storage unit is, for example, a non-volatile memory. Note that the program stored in the storage unit can be updated via a communication network such as the Internet, for example, OTA (Over The Air).

[0024] The control device 30 generates drive signals for turning on and off each of the switches SUp to SWn that constitute the inverter 20. Specifically, the control device 30 generates drive signals for turning on and off each of the switches SUp to SWn so as to convert the DC power output from the DC power source 10 into AC power and supply it to the U, V, and W phase windings 52U, 52V, and 52W, and supplies the generated drive signals to the gates of each of the switches SUp to SWn. As a result, in each phase, the upper arm switch and the lower arm switch are alternately turned on with a dead time in between.

[0025] The control device 30 turns on and off each switch SUp to SWn so that a combined current of a fundamental wave current and a high-frequency current (specifically, a high-frequency exciting current) higher than the frequency of the fundamental wave current flows through each phase winding 52U, 52V, 52W. The fundamental wave current is mainly a current that generates torque in the rotating electrical machine 40. The high-frequency current is mainly a current that excites the first and second winding portions 71 and 72 constituting the field winding 70 to induce a field current in the field winding 70. The phase currents flowing through the respective phase windings 52U, 52V, 52W are shifted by 120° in electrical angle.

[0026] Note that the high-frequency current flowing through the stator winding 52 may be a harmonic current whose fluctuation frequency is N times (N is an integer of 2 or more) the frequency of the fundamental wave current, or may be a current whose fluctuation frequency deviates from N times the frequency of the fundamental wave current.

[0027] When a high-frequency current flows through the stator winding 52, a voltage is induced in the first and second winding portions 71 and 72, and a field current flows. The induced voltages in the first and second winding portions 71 and 72 are, for example, in the same phase. The currents IL1 and IL2 flowing through the first and second winding portions 71 and 72 include frequency components of the high-frequency current.

[0028] In the electric circuit shown in FIG. 4, when the first and second winding portions 71 and 72 are excited with the energization of the stator winding 52, a current flows from the first winding portion 71 to the second winding portion 72. Further, when the voltage across both ends of the second winding portion 72 exceeds the forward voltage of the parallel diode 91, a current IL2 larger than the current IL1 flowing through the first winding portion 71 flows through the second winding portion 72 in a closed circuit including the second winding portion 72 and the parallel diode 91. By flowing a current through the closed circuit including the second winding portion 72 and the parallel diode 91, the DC component of the field current can be increased. Thereby, the DC component of the magnetic flux of the rotor 60 can be increased, and the torque of the rotating electrical machine 40 can be increased.

[0029] Also, when current flows through a closed circuit including the second winding part 72 and the parallel diode 91, a part of the current flows through the first winding part 71. In this case, the direction of the current IL1 flowing through the first winding part 71 and the direction of the current IL2 flowing through the second winding part 72 are opposite to each other. As a result, the pulsation of the field current, which is the sum of the respective currents IL1 and IL2, is reduced, and thus the torque pulsation of the rotating electrical machine 40 is reduced.

[0030] Next, the configuration of the rotor 60 will be described in more detail. FIG. 5 is an exploded perspective view of the rotor 60. Further, FIG. 6 is a perspective view showing the winding unit 110 disassembled in the rotor main part 101, and FIG. 7 is a cross-sectional view showing the cross-sectional structure of a part of the rotor main part 101.

[0031] The rotor 60 has a rotor main part 101 and a circuit module 102 provided on one end side of both axial ends of the rotor main part 101. The rotor main part 101 includes a rotor core 61 and a field winding 70 as described with reference to FIG. 3, and a rotating shaft 32 is assembled in the central hole of the rotor core 61. The field winding 70 is composed of a plurality of winding units 110 arranged side by side in the circumferential direction. The circuit module 102 is fixed to the rotating shaft 32 in a state where the rotating shaft 32 is inserted through the hollow part. The circuit module 102 is provided at a position axially opposed to the coil end on the axially outer side of the rotor core 61 in the field winding 70. The circuit module 102 corresponds to the "electrical circuit module". [[ID=!0]]

[0032] The rotor main part 101 has a plurality of winding units 110 provided for each pole of the rotor 60. Each winding unit 110 is formed in an annular shape with the axial direction as the longitudinal direction, and is assembled to the rotor core 61 in a state where the main pole part 62 of the rotor core 61 is inserted through the hollow part thereof. In the present embodiment, the "pole coil" is constituted by the winding unit 110.

[0033] The winding unit 110 has a first coil module 111 that is on the radially outer side when mounted on the main pole portion 62, and a second coil module 112 that is on the radially inner side. The first coil module 111 is a coil module corresponding to the first winding portion 71, and the second coil module 112 is a coil module corresponding to the second winding portion 72.

[0034] The first coil module 111 has an annular coil body 121 formed by winding a conductor wire made of a flat wire multiple times in the circumferential and radial directions, and a thin plate-shaped insulator 122 provided integrally with the coil body 121. The insulator 122 has a portion extending in the circumferential direction and covering the outer peripheral portions on the radially outer side and the radially inner side of the coil body 121, and a portion extending in the radial direction and covering the hollow portion of the coil body 121. That is, the outer peripheral portion on the radially outer side, the inner peripheral portion on the radially inner side, and the hollow portion of the coil body 121 are insulated and covered by the insulator 122.

[0035] The second coil module 112 has an annular coil body 123 formed by winding a conductor wire made of a flat wire multiple times in the circumferential and radial directions, and a thin plate-shaped insulator 124 provided integrally with the coil body 123. The insulator 124 has a portion extending in the circumferential direction and covering the outer peripheral portions on the radially outer side and the radially inner side of the coil body 123, and a portion extending in the radial direction and covering the hollow portion of the coil body 123. That is, the outer peripheral portion on the radially outer side, the inner peripheral portion on the radially inner side, and the hollow portion of the coil body 123 are insulated and covered by the insulator 124.

[0036] The coil bodies 121 and 123 are air-core coils configured as, for example, α-wound coils. The flat wire used for the coil bodies 121 and 123 has a substantially rectangular cross-sectional shape (specifically, a substantially rectangular shape), and the flat wire is composed of a conductor portion made of aluminum or the like and an insulating layer covering the conductor portion. However, it is also possible to use a round wire having a circular cross-section as the conductor wire.

[0037] As shown in Fig. 7, in the first coil module 111, the conductor is wound in two layers in the radial direction, and in the second coil module 112, the conductor is wound in six layers in the radial direction. Also, in each of the coil modules 111 and 112, the number of turns in the circumferential direction (in other words, the number of arrangements of the conductors in the circumferential direction) is different, and the number of turns is larger on the outer side in the radial direction than on the inner side in the radial direction. Thereby, an improvement in the space factor of the field winding 70 is achieved. If the space factor is disregarded, it is also possible to make the number of turns in the circumferential direction the same for each of the coil bodies 121 and 123 arranged in the radial direction.

[0038] Also, in the rotor main body 101, between the main pole portions 62 of the rotor core 61, holding plates 125 and 126 for holding the assembled states of the first coil module 111 and the second coil module 112 are provided in a state where the first coil module 111 and the second coil module 112 are assembled to each main pole portion 62. The holding plate 125 is attached to the outer side in the radial direction of the first coil module 111, and the holding plate 126 is attached between the first coil module 111 and the second coil module 112.

[0039] As shown in Fig. 6, in the winding unit 110 of each pole, two conductor end portions 127 are drawn out in the axial direction from the first coil module 111, and six conductor end portions 128 are drawn out in the axial direction from the second coil module 112. Then, in each winding unit 110 arranged in the circumferential direction, the conductor end portions 127 and 128 are joined to each other by welding or the like, so that a plurality of first coil modules 111 provided on each main pole portion 62 are connected in series, and a plurality of second coil modules 112 provided on each main pole portion 62 are connected in series.

[0040] Note that the configuration for connecting the windings (coil modules 111 and 112) of each main pole portion 62 arranged in the circumferential direction may be other than the configuration in which the conductor end portions 127 and 128 of the coil modules 111 and 112 are joined by welding or the like as described above. For example, a configuration (continuous winding configuration) in which the conductor is continuously wound around a plurality of main pole portions 62 so as to straddle the plurality of main pole portions 62 may be used.

[0041] In FIG. 5, the circuit module 102 has a component holder 130 made of a material having electrical insulation. Specifically, the component holder 130 is a resin molded body made of a resin material. The component holder 130 has a substantially disc shape with a central hole 131 in the center. The component holder 130 is configured to be assembled to the rotary shaft 32 with the rotary shaft 32 inserted through the central hole 131.

[0042] The component holder 130 holds electrical components E including diodes 91 and 93 and capacitors 92 and 94 so as to surround the central hole 131. Each of these electrical components E is electrically connected via a bus bar (not shown). Further, in the component holder 130, in the first winding portion 71 composed of a plurality of first coil modules 111, the winding end portions at both ends of the first winding portion 71 and, in the second winding portion 72 composed of a plurality of second coil modules 112, the winding end portions at both ends of the second winding portion 72 are electrically connected to an electric circuit composed of diodes 91 and 93 and capacitors 92 and 94 (see FIG. 4).

[0043] By the way, in a configuration where the circuit module 102 is disposed on one axial side of the rotor 60, when the electrical component E generates heat due to energization in the circuit module 102, heat is concentrated on one axial side of the rotor 60. For example, when the number of electrical components E in the circuit module 102 increases, the heat bias becomes remarkable. In this case, there is a concern that the circuit module 102 in the rotor 60 may become locally overheated.

[0044] Therefore, in the present embodiment, as shown in FIG. 8, as the circuit module 102, a first circuit module 141 and a second circuit module 142 are provided, and the first circuit module 141 is disposed on the side of the first rotor end X1 which is one axial side of the rotor core 61 (the left side in the figure), and the second circuit module 142 is disposed on the side of the second rotor end X2 which is the other axial end side of the rotor core 61 (the right side in the figure).

[0045] The first circuit module 141 and the second circuit module 142 each have an electric circuit shown in FIG. 4. The electric circuit of the first circuit module 141 is electrically connected to half of the plurality of winding units 110 via the winding ends Y on the first rotor end X1 side. Also, the electric circuit of the second circuit module 142 is electrically connected to the remaining half of the plurality of winding units 110 via the winding ends Y on the second rotor end X2 side. The winding ends Y on the first rotor end X1 side and the winding ends Y on the second rotor end X2 side correspond to the first end 71a and the second end 71b of the first winding portion 71 and the first end 72a and the second end 72b of the second winding portion 72 in FIG. 4.

[0046] In the rotating electrical machine 40, each of the circuit modules 141 and 142 may be arranged in a hollow space surrounded by the coil ends SE1 and SE2 of the stator winding 52 on both axial sides of the stator winding 52. That is, the portions of the stator winding 52 axially outside the axial end faces of the stator core 51 are the coil ends SE1 and SE2 as the stator coil ends. Then, on one axial end side (the first rotor end X1 side) and the other axial end side (the second rotor end X2 side), the circuit modules 141 and 142 are arranged on the inner circumferential side of the annularly continuous coil ends SE1 and SE2.

[0047] As described above, the plurality of winding units 110 are divided into two equal halves, and each of the two equal halves of the winding units 110 is electrically connected to each of the circuit modules 141 and 142 on both axial sides. The specific configuration thereof will be described below.

[0048] FIG. 9 is a cross-sectional view of the main rotor part 101. In FIG. 9, eight main pole parts 62 arranged in the circumferential direction and winding units 110 wound around each main pole part 62 are shown. Also, in FIG. 9, among the eight winding units 110, four winding units 110 connected to the first circuit module 141 are surrounded by a solid line frame, and the winding unit 110 is designated as "winding unit 110A". Further, the remaining four winding units 110 connected to the second circuit module 142 are surrounded by a broken line frame, and the winding unit 110 is designated as "winding unit 110B".

[0049] Here, if the four winding units 110A connected to the first circuit module 141 are defined as the "first coil group" and the four winding units 110B connected to the second circuit module 142 are defined as the "second coil group", the winding units 110A included in the first coil group and the winding units 110B included in the second coil group are alternately arranged one by one in the circumferential direction. In the present embodiment, in each adjacent winding unit 110 in the circumferential direction, the winding directions of the conductor materials are opposite to each other. Therefore, the winding directions of the respective winding units 110A included in the first coil group are all the same, and the winding directions of the respective winding units 110B included in the second coil group are all the same. Also, the winding direction of each winding unit 110A included in the first coil group and the winding direction of each winding unit 110B included in the second coil group are opposite to each other.

[0050] FIG. 10 is a diagram showing the electrical connection states of the first coil module 111 and the second coil module 112 of each winding unit 110, the first circuit module 141, and the second circuit module 142.

[0051] In Fig. 10, eight first coil modules 111 that constitute the first winding portion 71 and eight second coil modules 112 that constitute the second winding portion 72 are shown arranged side by side in the left - right direction. Also, the upper side of the figure is the first rotor end X1 side, and the lower side of the figure is the second rotor end X2 side. The first circuit module 141 is arranged on the first rotor end X1 side, and the second circuit module 142 is arranged on the second rotor end X2 side. Among the eight coil modules 111 and 112 each, the coil modules 111 and 112 included in the first coil group are referred to as "coil modules 111A and 112A", and the coil modules 111 and 112 included in the second coil group are referred to as "coil modules 111B and 112B". For the purpose of distinguishing them, the coil modules 111A and 112A are hatched.

[0052] In Fig. 10, each of the four coil modules 111A and 112A included in the first coil group is electrically connected to the first circuit module 141 on the first rotor end X1 side. Also, each of the four coil modules 111B and 112B included in the second coil group is electrically connected to the second circuit module 142 on the second rotor end X2 side. Each of the circuit modules 141 and 142 has an electric circuit composed of diodes 91, 93 and capacitors 92, 94, similar to Fig. 4, and in each of them, rectification of the field current is possible. However, in each of the circuit modules 141 and 142, it is only necessary that the capacitor capacitance be determined according to the number of winding units 110 of each coil group. Compared with the configuration in which one circuit module 102 is electrically connected to eight winding units 110, the capacitor capacitance may be about 1 / 2.

[0053] In each of the four coil modules 111A and 112A included in the first coil group, the conductor ends of each coil module 111A and 112A are drawn out to the first rotor end X1 side, and the conductor ends are connected to each other. Also, on the first rotor end X1 side, the winding ends of the first coil module 111A, which are the both ends of the first winding portion 71, and the winding ends of the second coil module 112A, which are the both ends of the second winding portion 72, are connected to the electric circuit of the first circuit module 141 as shown in the figure respectively.

[0054] In each of the four coil modules 111B and 112B included in the second coil group, the conductor ends of each coil module 111B and 112B are drawn out to the second rotor end X2 side, and the conductor ends are connected to each other. Also, on the second rotor end X2 side, the winding ends of the first coil module 111B, which are the both ends of the first winding portion 71, and the winding ends of the second coil module 112B, which are the both ends of the second winding portion 72, are connected to the electric circuit of the second circuit module 142 as shown in the figure respectively.

[0055] Note that, as shown in FIGS. 9 and 10, the configuration in which the winding unit 110A included in the first coil group and the winding unit 110B included in the second coil group are alternately arranged one by one in the circumferential direction on each main pole portion 62 of the rotor core 61 can be realized by providing four or more and an even number of main pole portions 62 in the rotor core 61. Therefore, the number of the main pole portions 62 provided in the rotor core 61 may be 4, 6, 10, 12, 14, 16, etc. other than 8 described above.

[0056] According to the configuration of FIG. 10, when the stator winding 52 is energized, the high-frequency current flowing through the stator winding 52 causes the field current to flow through the electric circuits of the respective circuit modules 141 and 142 to the respective coil modules 111A, 112A (winding unit 110A) included in the first coil group and the respective coil modules 111B, 112B (winding unit 110B) included in the second coil group. In this case, the field magnetic flux can be individually generated in each coil group. Thereby, the excitation of the field winding 70 in the rotor 60 can be performed with redundancy.

[0057] Here, each of the circuit modules 141 and 142 may be configured such that when the stator winding 52 is energized, a field current of approximately the same magnitude flows through the coil modules 111 and 112 of each coil group. In this case, compared with the case where the eight coil modules 111 and 112 are connected in series, although the inductance of the coil modules 111 and 112 of each coil group becomes approximately 1 / 2, the field current generated in each coil group is of the same magnitude. Therefore, in the sum of both coil groups, a field magnetic flux of approximately the same magnitude is generated. The torque generated in each coil group is approximately 1 / 2 compared with the case where the eight coil modules 111 and 112 are connected in series. Also, the voltage generated in each coil group becomes a voltage slightly higher than 1 / 2 compared with the case where the eight coil modules 111 and 112 are connected in series.

[0058] Also, in the configurations of FIGS. 9 and 10, in each main pole portion 62 arranged in the circumferential direction on the rotor 60, the coil modules 111A, 112A (winding unit 110A) included in the first coil group and the coil modules 111B, 112B (winding unit 110B) included in the second coil group are alternately arranged one by one in the circumferential direction. Therefore, when the field winding 70 is energized redundantly by the two circuit modules 141 and 142, the field magnetic flux of each pole generated by the energization of the first circuit module 141 and the field magnetic flux of each pole generated by the energization of the second circuit module 142 are evenly and finely dispersed in the circumferential direction. In this case, according to each coil group, it is possible to generate a field magnetic flux at a position that forms a polygon of the total number of poles / 2 (a square in FIG. 9) when viewed in the circumferential direction of the rotor 60.

[0059] Further, even if one of the two circuit modules 141 and 142 malfunctions due to a failure, the other circuit module can excite the field winding 70, and the rotational drive of the rotating electrical machine 40 can be continued. That is, since the field winding 70 is divided into two independent systems, even if a failure occurs in either one of the circuit modules 141 and 142, the rotational drive of the rotating electrical machine 40 can be continued while generating at least about 1 / 2 of the torque.

[0060] In the configuration in which the circuit module 102 is divided into two circuit modules 141 and 142 as described above, it is possible to reduce the number of electrical components or reduce the size of the electrical components in each individual circuit module 141 and 142. Therefore, the size of each circuit module 141 and 142 is reduced. That is, in each circuit module 141 and 142, the thickness dimension in the axial direction is reduced. As a result, the rotating electrical machine 40 can be miniaturized.

[0061] Incidentally, if the direction of either of the diodes 91 and 93 is reversed in either one of the circuit modules 141 and 142, the direction of the field current will be reversed in the winding unit 110 connected to that one circuit module. Therefore, even if all the windings in the circumferential direction of the field winding 70 are wound in the same direction, it is possible to generate field magnetic fluxes with opposite polarities in the respective main pole portions 62 adjacent to each other in the circumferential direction.

[0062] Also, in the rotating electrical machine 40 of the present embodiment, the circuit modules 141 and 142 respectively arranged on both axial ends are configured to be cooled individually. This configuration will be described with reference to FIG. 11. In FIG. 11, the left side of the figure is the first rotor end X1 side, and the right side is the second rotor end X2 side. In this configuration, the rotating electrical machine 40 has a first refrigerant supply unit that supplies refrigerant to the first circuit module 141 and a second refrigerant supply unit that supplies refrigerant to the second circuit module 142. Here, a configuration is adopted in which the circuit modules 141 and 142 are cooled using a refrigerant such as cooling water or cooling oil.

[0063] In the housing 41 of the rotating electrical machine 40, inlet portions 151 and 152 are respectively provided on both axial ends of the rotor 60 (that is, the first rotor end X1 side and the second rotor end X2 side) as refrigerant intake portions. Further, in the housing 41, on the first rotor end X1 side, a refrigerant passage 153 is provided to guide the refrigerant taken in from the inlet portion 151 toward the first circuit module 141, and on the second rotor end X2 side, a refrigerant passage 154 is provided to guide the refrigerant taken in from the inlet portion 152 toward the second circuit module 142. Note that the inlet portion 151 and the refrigerant passage 153 correspond to the "first refrigerant supply unit", and the inlet portion 152 and the refrigerant passage 154 correspond to the "second refrigerant supply unit".

[0064] Furthermore, in the housing 41, outlet portions 155 and 156 are respectively provided on both axial ends of the rotor 60 (that is, the first rotor end X1 side and the second rotor end X2 side) as refrigerant discharge portions.

[0065] A refrigerant supply system that supplies refrigerant to the rotating electrical machine 40 includes a circulation passage 161 for circulating the refrigerant, and has a circulation pump 162 and a heat radiating portion 163 provided in the circulation passage 161. The circulation pump 162 is, for example, an electric pump. The heat radiating portion 163 is, for example, a radiator that releases the heat of the refrigerant to the atmosphere. The refrigerant flows through the circulation passage 161 by driving the circulation pump 162.

[0066] When the rotating electrical machine 40 is rotationally driven, the refrigerant flowing in from the circulation passage 161 is supplied to each circuit module 141, 142 from the refrigerant passages 153, 154. Thereby, cooling by the refrigerant is individually performed in each circuit module 141, 142.

[0067] Note that, as the refrigerant supply system, a configuration in which separate systems are constructed on the first circuit module 141 side and the second circuit module 142 side may be employed. In this case, it is preferable that the refrigerant is supplied via separate circulation passages 161 on the first circuit module 141 side and the second circuit module 142 side.

[0068] According to the present embodiment described in detail above, the following excellent effects can be obtained.

[0069] In the rotor 60, the first circuit module 141 is disposed on the first rotor end portion X1 side, which is one axial side of the rotor core 61, and the second circuit module 142 is disposed on the second rotor end portion X2 side, which is the other axial end side of the rotor core 61. Thereby, when the electrical components generate heat due to energization in each of the circuit modules 141, 142, the heat is dispersed to both axial sides of the rotor 60. That is, the heat sources are dispersed in the rotor 60. As a result, it is possible to suppress the rotor 60 from becoming overheated.

[0070] Among a plurality of winding units 110 (coil modules 111, 112) arranged in the circumferential direction, half of the winding units 110A are classified as a first coil group, and the remaining half of the winding units 110B are classified as a second coil group. The winding ends of the first coil group are electrically connected to the electrical components of the first circuit module 141, and the winding ends of the second coil group are electrically connected to the electrical components of the second circuit module 142. In this case, the energization of the field current in the first coil group and the energization of the field current in the second coil group can be performed individually. Thereby, the excitation of the field winding 70 in the rotor 60 can be performed with redundancy. Also, since the electrical circuit becomes redundant, the fault tolerance is improved.

[0071] In the winding unit 110A included in the first coil group, a conductor end is drawn out to the first rotor end X1 side, and the conductor end is electrically connected to the electrical components of the first circuit module 141. In the winding unit 110B included in the second coil group, a conductor end is drawn out to the second rotor end X2 side, and the conductor end is electrically connected to the electrical components of the second circuit module 142. Thereby, electrical connection can be preferably performed on the first rotor end X1 side and the second rotor end X2 side, respectively.

[0072] In each main pole portion 62 arranged in the circumferential direction in the rotor core 61, the winding unit 110A included in the first coil group and the winding unit 110B included in the second coil group are alternately arranged one by one in the circumferential direction. In this case, when the field winding 70 is redundantly energized by the two circuit modules 141 and 142, the field magnetic flux of each pole generated by the energization of the first circuit module 141 and the field magnetic flux of each pole generated by the energization of the second circuit module 142 can be evenly and finely dispersed in the circumferential direction. Thereby, the rotational vibration in the rotor 60 can be reduced.

[0073] The first circuit module 141 and the second circuit module 142 have diodes 91, 93 and capacitors 92, 94, and are configured to have an electric circuit that rectifies the field current in the first coil group and the second coil group when the stator winding 52 is energized. In this case, the same field current flows through the first coil group and the second coil group by each of the circuit modules 141, 142. Therefore, even if a failure occurs in either one of the circuit modules 141, 142, at least about 1 / 2 of the torque can be generated.

[0074] A configuration is adopted in which refrigerant is supplied to each of the circuit modules 141, 142 individually. Thereby, the cooling effect in each of the circuit modules 141, 142 can be enhanced.

[0075] (Other embodiments) The above embodiment may be modified as follows, for example.

[0076] · In the rotor 60, a configuration may be adopted in which the first coil group and the second coil group are separated as follows.

[0077] The configuration shown in FIGS. 12 and 13 can be adopted. FIG. 12 is a cross-sectional view of the main part 101 of the rotor, similar to FIG. 9 described above. FIG. 13 is a diagram showing the electrical connection state between the first coil module 111 and the second coil module 112 of each winding unit 110, and the first circuit module 141 and the second circuit module 142, similar to FIG. 10 described above.

[0078] In the configuration shown in FIG. 12, the winding units 110A included in the first coil group and the winding units 110B included in the second coil group are alternately arranged two by two in the circumferential direction.

[0079] Also, in FIG. 13, each of the four coil modules 111A and 112A included in the first coil group is electrically connected to the first circuit module 141 on the first rotor end X1 side. Further, each of the four coil modules 111B and 112B included in the second coil group is electrically connected to the second circuit module 142 on the second rotor end X2 side.

[0080] Note that the configuration in which the winding units 110A included in the first coil group and the winding units 110B included in the second coil group are alternately arranged two by two in the circumferential direction on each main pole portion 62 of the rotor core 61 can be realized by providing 4×n (n is an integer) main pole portions 62 in the rotor core 61. Therefore, the number of main pole portions 62 provided in the rotor core 61 may be 4, 12, 16, etc. in addition to 8 described above.

[0081] According to the configurations of FIGS. 12 and 13 described above, when the field winding 70 is energized redundantly by the two circuit modules 141 and 142, the field magnetic flux of each pole generated by the energization of the first circuit module 141 and the field magnetic flux of each pole generated by the energization of the second circuit module 142 can be evenly dispersed in the circumferential direction. Thereby, the rotational vibration in the rotor 60 can be reduced.

[0082] Also, the configurations shown in FIGS. 14 and 15 are possible. FIG. 14 is a cross-sectional view of the rotor main body 101, similar to FIG. 9 described above. FIG. 15 is a diagram showing the electrical connection states of the first coil module 111 and the second coil module 112 of each winding unit 110, the first circuit module 141, and the second circuit module 142, similar to FIG. 10 described above.

[0083] In the configuration shown in FIG. 14, the winding units 110A included in the first coil group and the winding units 110B included in the second coil group are divided into the same number and in half in the circumferential direction of the rotor core 61, and are arranged on one side and the other side, respectively.

[0084] Also, in FIG. 15, each of the four coil modules 111A and 112A included in the first coil group is electrically connected to the first circuit module 141 on the first rotor end X1 side. Further, each of the four coil modules 111B and 112B included in the second coil group is electrically connected to the second circuit module 142 on the second rotor end X2 side.

[0085] According to the configurations of FIGS. 14 and 15 described above, since the coil modules 111 and 112 included in the same coil group are arranged together, the length of the bridging portion of the conductor material between the main pole portions 62 is shortened. Therefore, it is possible to reduce the winding resistance. Further, in the case of a continuous winding configuration, it is considered that the conductor material is continuously wound around the main pole portions 62 that are close to each other, facilitating the winding operation.

[0086] · In each of the above embodiments, the eight winding units 110 arranged in the circumferential direction are divided into two coil groups, and for each coil group, the electric circuits of the circuit modules 141 and 142 are provided with the same circuit configuration. However, the configuration of the electric circuits of the circuit modules 141 and 142 is not limited to this. Other configurations will be described below.

[0087] FIGS. 16 to 18 are diagrams showing the electrical connection states between the first coil module 111 and the second coil module 112 of each winding unit 110, and the first circuit module 141 and the second circuit module 142.

[0088] In Fig. 16, the electric circuit of the first circuit module 141 is connected to both ends of the second winding portion 72 in the series connection of the first winding portion 71 and the second winding portion 72, and is configured as a closed circuit (first closed circuit) that rectifies the current flowing through the second winding portion 72 in one direction as the stator winding 52 is energized. Further, the electric circuit of the second circuit module 142 is connected to both ends of the series connection of the first winding portion 71 and the second winding portion 72, and is configured as a closed circuit (second closed circuit) that rectifies the current flowing through the series connection in one direction as the stator winding 52 is energized. As described with reference to Fig. 4, the first closed circuit has a parallel diode 91 and a parallel capacitor 92. Further, the second closed circuit has a series diode 93 and a series capacitor 94.

[0089] According to the above configuration, in the first closed circuit connected to both ends of the second winding portion 72 and the second closed circuit connected to both ends of the series connection of the first winding portion 71 and the second winding portion 72, the electrical components used in each of these closed circuits can be individually changed more easily, and the degree of freedom in design can be improved.

[0090] In the configuration of Fig. 16, for example, one winding end portion of the second winding portion 72 (the second end 72b in Fig. 4) is connected to each of the circuit modules 141 and 142 on both axial sides. In this case, it is preferable to connect an axially extending axial connecting wire to the winding end portion (the second end 72b) of the second winding portion 72, and connect the first circuit module 141 side and the second circuit module 142 side by the axially extending connecting wire. Specifically, for example, a groove-shaped or hole-shaped connecting wire insertion portion extending in the axial direction is provided in the holding plate 125 or the holding plate 126 shown in Fig. 7, and the circuit modules 141 and 142 on both axial sides are connected to each other with the axially extending connecting wire inserted into the connecting wire insertion portion. The same configuration may be applied to the winding end portion (the first end 71a) of the first winding portion 71.

[0091] In Fig. 16, instead of the configuration in which the first closed circuit is connected in parallel to the second winding portion 72 on the inner side in the radial direction, it is also possible to adopt a configuration in which the first closed circuit is connected in parallel to the first winding portion 71 on the outer side in the radial direction.

[0092] In the configuration of FIG. 17, the electric circuit of the first circuit module 141 has the diodes 91 and 93 among the diodes 91, 93 and the capacitors 92, 94 that constitute the electric circuit shown in FIG. 4. Also, the electric circuit of the second circuit module 142 has the capacitors 92, 94 among the diodes 91, 93 and the capacitors 92, 94 that constitute the electric circuit shown in FIG. 4.

[0093] In the configuration of FIG. 18, the electric circuit of the first circuit module 141 has the diodes 91, 93 and a part of the capacitors (capacitor 94) among the diodes 91, 93 and the capacitors 92, 94 that constitute the electric circuit shown in FIG. 4. Also, the electric circuit of the second circuit module 142 has the remaining capacitor 92 among the diodes 91, 93 and the capacitors 92, 94 that constitute the electric circuit shown in FIG. 4.

[0094] · It is also possible to configure the electric circuit on the rotor 60 side including the first and second winding portions 71 and 72 as follows.

[0095] In the electric circuit shown in FIG. 19, a parallel diode 91 and a parallel capacitor 92 are respectively connected in parallel to the second winding portion 72. Also, a parallel capacitor 95 is connected in parallel to the first winding portion 71. A series diode 93 is connected in series to the series connection body of the first winding portion 71 and the second winding portion 72. Comparing with the electric circuit shown in FIG. 4, in FIG. 19, instead of the series capacitor 94 in FIG. 4, a parallel capacitor 95 parallel to the first winding portion 71 is provided.

[0096] In the electric circuit shown in FIG. 20, a parallel capacitor 92 is connected in parallel to the second winding portion 72. Also, a series diode 93 and a series capacitor 94 are respectively connected in series to the series connection body of the first winding portion 71 and the second winding portion 72. Comparing with the electric circuit shown in FIG. 4, in FIG. 19, the configuration is such that the parallel diode 91 in FIG. 4 is removed.

[0097] Note that the electric circuit on the rotor 60 side can also be configured differently from those in FIGS. 4, 19, and 20 above. For example, the capacitor can be arranged in parallel or in series at another position with respect to the diodes 91 and 93 and each winding portion 71 and 72.

[0098] · In each circuit module 141 and 142, the amount of heat generated due to energization varies depending on the configuration of the electric circuit in each of these circuit modules 141 and 142. That is, for example, the amount of heat generated due to energization is different between a diode element and a capacitor element. In this case, in each of the circuit modules 141 and 142, it is conceivable that the amount of heat generated when the field current flows through the field winding 70 due to the energization of the stator winding 52 is different from each other.

[0099] Taking this point into consideration, the refrigerant supply amount per unit time may be made different between the first refrigerant supply unit that supplies refrigerant to the first circuit module 141 and the second refrigerant supply unit that supplies refrigerant to the second circuit module 142, that is, the cooling capacity may be made different for each refrigerant supply unit. In this case, it is preferable that the refrigerant supply amount per unit time for the circuit module with a larger amount of heat generated by the electrical components among the circuit modules 141 and 142 is larger. Thereby, even if the amount of heat generated is different in each of the circuit modules 141 and 142, these circuit modules 141 and 142 can be appropriately cooled.

[0100] · The field winding 70 is not limited to a configuration including the first winding portion 71 and the second winding portion 72. For example, the field winding 70 may be configured such that each winding portion for each main pole portion 62 is connected in series without being divided into the first and second winding portions 71 and 72, and a diode is connected to both ends of the field winding 70, or a configuration in which a diode and a capacitor are connected in parallel.

[0101] That is, in the above-described embodiment, the field coil of each magnetic pole is constituted by a winding unit 110 composed of two coil modules (first coil module 111 and second coil module 112) for each magnetic pole. However, this can be changed, and the field coil of each magnetic pole may be constituted by one coil module for each magnetic pole.

[0102] · In the stator 50, the stator core may be a stator core without teeth.

[0103] · The rotating electrical machine is not limited to the rotating electrical machine used as the in-vehicle main machine. For example, it may be a rotating electrical machine used as an ISG (Integrated Starter Generator) which is a motor-generator.

[0104] · The moving body on which the rotating electrical machine system is mounted is not limited to a vehicle. For example, it may be an aircraft or a ship. Further, the rotating electrical machine system is not limited to the system mounted on the moving body, and may be a stationary system.

[0105] The technical idea extracted from the above-described embodiment is described below. [Configuration 1] A stator (50) having a stator winding (52), A rotor (60) having a rotor core (61) and a field winding (70) wound around the rotor core, An electric circuit module (102) provided rotatably integrally with the rotor and having an electric component connected to the field winding, A wound-field type rotating electrical machine (40) having, The rotor has, as the electric circuit module, a first circuit module (141) disposed on the side of a first rotor end (X1) which is one axial end of the rotor core, and a second circuit module (142) disposed on the side of a second rotor end (X2) which is the other axial end of the rotor core. The wound-field type rotating electrical machine. [Configuration 2] In the rotor, the rotor core is provided with main pole portions (62) that protrude in the radial direction for each of the poles arranged in the circumferential direction. The field winding has a plurality of pole coils (110) provided for each of the main pole portions and around which a conductor material is wound. The plurality of pole coils are divided into pole coils included in a first coil group and pole coils included in a second coil group. The winding end of the first coil group is electrically connected to the electrical component of the first circuit module, and the winding end of the second coil group is electrically connected to the electrical component of the second circuit module. The wound field type rotating electrical machine according to Configuration 1. [Configuration 3] For the pole coils included in the first coil group, the end of the conductor material is drawn out to the side of the first rotor end, and is electrically connected to the electrical component of the first circuit module on the side of the first rotor end. For the pole coils included in the second coil group, the end of the conductor material is drawn out to the side of the second rotor end, and is electrically connected to the electrical component of the second circuit module on the side of the second rotor end. The wound field type rotating electrical machine according to Configuration 2. [Configuration 4] The rotor core has 4 or more and an even number of the main pole portions. In each of the main pole portions arranged in the circumferential direction in the rotor core, the pole coils included in the first coil group and the pole coils included in the second coil group are alternately arranged one by one in the circumferential direction. The wound field type rotating electrical machine according to Configuration 2 or 3. [Configuration 5] The rotor core has 4×n (n is an integer) of the main pole portions. In each of the main pole portions arranged in the circumferential direction in the rotor core, the pole coils included in the first coil group and the pole coils included in the second coil group are alternately arranged two by two in the circumferential direction. The wound field type rotating electrical machine according to Configuration 2 or 3. [Configuration 6] A wound field type rotating electrical machine (40) in which a high-frequency current for inducing a field current in the field winding flows through the stator winding. The first circuit module and the second circuit module each have a diode (91, 93) and a capacitor (92, 94) as the electrical components, and have an electrical circuit for rectifying the field current in the first coil group and the second coil group respectively when the stator winding is energized. The wound-field type rotating electrical machine according to any one of Configurations 2 to 5. [Configuration 7] A wound-field type rotating electrical machine (40) in which a high-frequency current for inducing a field current in the field winding flows through the stator winding, The field winding has a first winding portion (71) wound radially outward in a plurality of main pole portions (62) provided on the rotor core, and a second winding portion (72) wound radially inward, and the first winding portion and the second winding portion are connected in series. The electric circuit module A first closed circuit connected to both ends of either one of the first winding portion and the second winding portion, and rectifying the current flowing through the one winding portion in one direction as the stator winding is energized; A second closed circuit connected to both ends of the series connection of the first winding portion and the second winding portion, and rectifying the current flowing through the series connection in one direction as the stator winding is energized. The electrical components constituting the first closed circuit are mounted on the first circuit module, and the electrical components constituting the second closed circuit are mounted on the second circuit module. The wound-field type rotating electrical machine according to Configuration 1. [Configuration 8] The wound-field type rotating electrical machine according to any one of Configurations 1 to 7, having a first refrigerant supply unit for supplying refrigerant to the first circuit module and a second refrigerant supply unit for supplying refrigerant to the second circuit module.

Description of Symbols

[0106] 40... rotating electrical machine, 50... stator, 52... stator winding, 60... rotor, 61... rotor core, 62... main pole portion, 70... field winding, 102... circuit module, 141... first circuit module, 142... second circuit module.

Claims

1. A stator (50) having a stator winding (52), a rotor (60) having a rotor core (61) and a field winding (70) wound around the rotor core, an electric circuit module (102) provided rotatably integrally with the rotor and having electric components connected to the field winding, A wound-field rotating electric machine (40) having, The rotor includes, as the electric circuit module, a first circuit module (141) disposed on the side of a first rotor end portion (X1) which is one axial end side of the rotor core, and a second circuit module (142) disposed on the side of a second rotor end portion (X2) which is the other axial end side of the rotor core. The wound-field rotating electric machine.

2. In the rotor, the rotor core is provided with main pole portions (62) protruding in the radial direction for each of the magnetic poles arranged in the circumferential direction, and the field winding has a plurality of pole coils (110) provided for each of the main pole portions and wound with a conductor material, The plurality of pole coils are divided into pole coils included in a first coil group and pole coils included in a second coil group, The winding end portion of the first coil group is electrically connected to the electric component of the first circuit module, and the winding end portion of the second coil group is electrically connected to the electric component of the second circuit module. The wound-field rotating electric machine according to claim 1.

3. For the pole coils included in the first coil group, the end portion of the conductor material is drawn out to the side of the first rotor end portion and is electrically connected to the electric component of the first circuit module on the side of the first rotor end portion, For the pole coils included in the second coil group, the end portion of the conductor material is drawn out to the side of the second rotor end portion and is electrically connected to the electric component of the second circuit module on the side of the second rotor end portion. The wound-field rotating electric machine according to claim 2.

4. The rotor core has 4 or more and an even number of the main pole portions, In the rotor core, the pole coils included in the first coil group and the pole coils included in the second coil group are alternately arranged one by one in the circumferential direction for each of the main pole portions arranged in the circumferential direction. The wound-field rotating electric machine according to claim 2.

5. The rotor core has 4×n (n is an integer) of the main pole portions, In the rotor core, in each of the main pole portions arranged in the circumferential direction, the pole coils included in the first coil group and the pole coils included in the second coil group are alternately arranged two by two in the circumferential direction. The wound-field type rotating electrical machine according to claim 2.

6. A wound-field type rotating electrical machine (40) in which a high-frequency current for inducing a field current in the field winding flows through the stator winding, Each of the first circuit module and the second circuit module has a diode (91, 93) and a capacitor (92, 94) as the electrical components, and has an electric circuit for rectifying a field current in each of the first coil group and the second coil group when the stator winding is energized. The wound-field type rotating electrical machine according to any one of claims 2 to 5.

7. A wound-field type rotating electrical machine (40) in which a high-frequency current for inducing a field current in the field winding flows through the stator winding, The field winding has a first winding portion (71) wound radially outward in a plurality of main pole portions (62) provided in the rotor core, and a second winding portion (72) wound radially inward, and the first winding portion and the second winding portion are configured to be connected in series. The electric circuit module A first closed circuit connected to both ends of either one of the first winding portion and the second winding portion, and rectifying the current flowing through the one winding portion in one direction as the stator winding is energized; A second closed circuit connected to both ends of the series connection body of the first winding portion and the second winding portion, and rectifying the current flowing through the series connection body in one direction as the stator winding is energized. The electrical components constituting the first closed circuit are mounted on the first circuit module, and the electrical components constituting the second closed circuit are mounted on the second circuit module. The wound-field type rotating electrical machine according to claim 1.

8. The wound-field type rotating electrical machine according to claim 1, comprising a first refrigerant supply unit for supplying refrigerant to the first circuit module and a second refrigerant supply unit for supplying refrigerant to the second circuit module.

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