JP2020182345A - Inverter assembly and control device integrated rotary electric machine - Google Patents

Abstract

To provide an inverter assembly capable of reducing switching surge while downsizing the inverter.SOLUTION: In a control device integrated rotary electric machine 1 equipped with a motor unit 1A, in an inverter assembly 1B having a plurality of power modules 9 arranged at intervals in an arc on the mounting surface of a heat sink 19, a control board 17 is held on the mounting surface side at a distance from each of the power modules 9, and capacitor units 22 are arranged at intervals in an arc on the anti-heat sink side of the control board 17 corresponding to the power module 9, and a power supply wiring and a ground wiring are arranged on the circumferential side of the plurality of power modules 9 on the mounting surface, and their tips are extended from the positions corresponding to the adjacent power modules 9 in the direction perpendicular to the mounting surface and connected to the respective capacitor units 22.SELECTED DRAWING: Figure 1

Description

The present application relates to an inverter assembly and a rotary electric machine integrated with a control device.

Patent Document 1 includes a smoothing capacitor connected in parallel to an inverter and a field module as a rotary electric machine integrated with a control device, and the inverter includes n power modules forming an n-phase bridge circuit. It is configured by arranging it in a circumferential shape on a common heat sink provided in the main body of the rotary electric machine, and the smoothing capacitor is composed of n smoothing capacitors corresponding to the power module and is on the heat sink in the same plane as the power module. In addition, a configuration is shown in which the power modules are distributed between the power modules and at locations adjacent to the power modules located on one end side.

Japanese Patent No. 6038230

The following problems are raised in the rotary electric machine integrated with the control device as described above.
When a plurality of capacitors are mounted between power modules, a storage area for accommodating the capacitors is required in the gap between the power modules, but it is necessary to expand the area for accommodating the capacitors by the gap between the power modules. Since the entire inverter expands in the radial direction depending on the quantity and size of the capacitor, it could not be miniaturized.
Further, if the capacitors are centrally arranged at a location away from the power module, the effect of reducing the switching surge is reduced, resulting in poor efficiency.

The present application discloses a technique for solving the above-mentioned problems, an inverter assembly capable of downsizing the inverter and reducing switching surges, and a rotary electric machine with an integrated control device equipped with the inverter assembly. The purpose is to get.

The inverter assembly disclosed in the present application includes a plurality of power modules arranged at intervals in an arc shape on a mounting surface of a heat sink, and a power supply wiring and a ground provided on the mounting surface and connected to each of the power modules. In an inverter assembly including a control board provided with wiring and a control circuit for controlling the power module, and a plurality of capacitor units connected to each of the power modules and accommodating capacitors for absorbing switching surges. The control board is held on the side of the mounting surface at a distance from each of the power modules, and the capacitor units are spaced apart from each other of the power modules in an arc shape on the anti-heat source side of the control board corresponding to the power modules. The power supply wiring and the ground wiring are arranged on the inner peripheral side of the plurality of power modules on the mounting surface, and their tips are arranged with the mounting surface from a position corresponding to the adjacent power modules. It extends in the vertical direction and is connected to each of the capacitor units.

According to the inverter assembly disclosed in the present application, it is possible to reduce the size of the inverter assembly and reduce the switching surge.

It is sectional drawing which shows the control device integrated rotary electric machine which concerns on Embodiment 1. FIG. It is a circuit diagram which shows the schematic circuit of the control device integrated rotary electric machine which concerns on Embodiment 1. FIG. It is a front view of the main part which shows the inverter assembly which concerns on Embodiment 1. FIG. It is a front view which shows the inverter assembly which mounted the capacitor unit which concerns on Embodiment 1. FIG. It is a front view which shows the cooling fin side of the heat sink which concerns on Embodiment 1. FIG. It is a perspective view of the main part which shows the arrangement relation of the B line terminal and the GND line terminal of the inverter assembly which concerns on Embodiment 1. FIG. 5 is a cross-sectional view of a main part showing the arrangement relationship between the B line terminal and the GND line terminal of the inverter assembly according to the first embodiment and the capacitor unit. It is a front side perspective view which shows the capacitor unit which concerns on Embodiment 2. FIG. It is a back side perspective view which shows the capacitor unit which concerns on Embodiment 2. FIG. It is a main part perspective view which shows the fitting part provided in the case which concerns on Embodiment 2. FIG. It is a perspective view which shows the fitting state of the capacitor unit and the case which concerns on Embodiment 2. FIG. FIG. 11 is a perspective view showing a connection state between the capacitor housed in the capacitor unit and the power supply terminal in FIG. It is schematic cross-sectional view which shows the connection state of the capacitor unit and a power-source terminal in the state which the capacitor unit which concerns on Embodiment 2 is attached to a case. It is a front side perspective view which shows the capacitor unit which concerns on Embodiment 3. FIG. It is a front side perspective view which shows the capacitor unit which concerns on Embodiment 4. FIG. It is sectional drawing of the main part which shows the arrangement relation of the B line terminal and the GND line terminal of the inverter assembly which concerns on Embodiment 5.

Embodiment 1.
The controller-integrated rotary electric machine according to the first embodiment will be described with reference to FIG. 1-7.
In FIG. 1, the controller-integrated rotary electric machine 1 is composed of a motor unit 1A and an inverter assembly 1B as large components.
In the motor unit 1A, the rotor 2 around which the field winding 2a is wound, the two sets of the three-phase stator windings 3a are wound, and the stator 3, the rotor 2 and the fixing are arranged around the rotor 2. It is composed of a front bracket 4 for accommodating the child 3, a rear bracket 5, and a magnetic pole position detection sensor 6 for detecting the rotational state of the rotor 2.
The inverter assembly 1B includes a disk-shaped heat sink 19 arranged on the rear bracket 5 side of the motor unit 1A, a power module 9 and a field module 10 arranged on the heat sink 19 to supply electric power, and a control for controlling them. It is composed of a control board 17 provided with a circuit and a capacitor unit 22 for accommodating a capacitor 21 for absorbing a switching surge.

First, the motor unit 1A will be described.
The rotor 2 includes a rotating shaft 11 whose both ends are rotatably supported by bearings 7 and 8 held by the front bracket 4 and the rear bracket 5.
One end of the rotating shaft 11 protrudes from the front bracket 4, and a pulley 12 for transmitting and receiving torque in both directions with an internal combustion engine (not shown) is attached to the tip thereof, and is connected to the internal combustion engine via a belt. ing.
A slip ring 13 for supplying a field current to the field winding 2a of the rotor 2 is provided on the rotating shaft 11 protruding from the rear bracket 5 to the rear side.
A brush 16 that is in sliding contact with the slip ring 13 is held and provided in the brush holder 16a.
Fans 20a and 20b for generating cooling air are attached to both end faces of the field iron core of the rotor 2.

The magnetic pole position detection sensor 6 that detects the rotational state of the rotor 2 is arranged coaxially with the rotary shaft 11 between the slip ring 13 and the bearing 8 on the outside of the rear bracket 5, and the rotary shaft 11, that is, the rotor 2. Detect the position of the magnetic pole.
The magnetic pole position detection sensor 6 is composed of a sensor stator 6a and a sensor rotor 6b, and a sensor rotor 6b having only an iron core is rotatably provided inside the sensor stator 6a.

A terminal 18a for connecting the stator lead wire 3b and the power module 9 is insert-molded on the connecting board 18 fixed to the rear side of the rear bracket 5 with a screw.
The stator lead wire 3b penetrates the rear bracket 5 and is joined to the terminal 18a insert-molded on the connecting board 18 by welding.

Next, the inverter assembly 1B will be described.
The inverter assembly 1B includes a plurality of power modules 9 in which switching elements for supplying armature current during driving and rectifying armature current during power generation are integrated together with peripheral circuits, and switching for controlling field current. A field module 10 in which elements are grouped together with peripheral circuits, a cooling heat sink 19 on which the power module 9 and the field module 10 are mounted, and a control circuit for controlling the power module 9 and the field module 10 are configured. The control board 17 and the case 14 formed so as to surround the control board 17 on the outer periphery of the heat sink 19 and having terminals connected to the power system terminals of each module, and the capacitor 21 for absorbing the switching surge are housed. It is composed of a plurality of capacitor units 22.
The brush holder 16a is mounted in a space through which the central rotation axis of the heat sink 19 passes, and is connected to the field module 10 via a terminal insert-molded in the case 14.
The sensor stator 6a of the magnetic pole position detection sensor 6 is mounted on the heat sink 19, and its signal wiring is connected to the control board 17.

The power module 9 and the field module 10 have a structure in which a switching element is mounted on a lead frame for wiring and the whole is resin-molded.
The heat sink 19 is attached to the rear bracket side of the motor portion 1A with screws, and the power module 9 is arranged in an arc shape on the attachment surface 19a on the anti-rear bracket side of the heat sink 19 (see FIG. 3).
The heat sink 19 has cooling fins 19b arranged radially on the surface on the rear bracket side (see FIG. 5).
The capacitor unit 22 is configured to integrally house two sets of capacitors 21 corresponding to the power module 9 as a set (see FIG. 4).
In this embodiment, three capacitor units 22 are arranged for six power modules 9.
The capacitor 21 is welded or soldered to the capacitor B terminal 22a inserted into the capacitor unit 22 and the capacitor GND terminal 22b.

On the mounting surface 19a of the heat sink 19, a plurality of power modules 9 having a trapezoidal outer shape are evenly arranged in an arc shape, and B-line wiring (power supply wiring) for supplying power to the inner peripheral side of these power modules 9 ) 28 and the GND line wiring (ground wiring) 29 are insulated from each other and arranged in parallel, and their tip portions are joined to the B terminal 9a and the GND terminal 9b of the power module 9 by welding (see FIG. 6).
The welded parts of the B terminal 9a and the GND terminal 9b of the power module 9 are joined to the B line wiring 28 and the GND line wiring 29 on the lower side of the control board 17, respectively, and the signal terminal 9c of the power module 9 is connected to the control board 17. (See Figures 1 and 3).

Further, the B line wiring 28 and the GND line wiring 29 are extended in the vertical direction while being arranged in parallel between the power modules 9, and the B line terminal 28a and the GND line terminal 29a, which are the tip portions thereof, are respectively connected to the capacitor unit 22. It is connected to the insert-molded capacitor B terminal 22a and the capacitor GND terminal 22b with a screw (see FIGS. 1, 4 and 7).
The control board 17, the power module 9, and the capacitor unit 22 arranged inside the case 14 are integrated with the filler 27. The filler 27 is mainly composed of an epoxy resin or a gel-like resin.

Then, the inverter assembly 1B is assembled to the rear bracket 5 of the motor unit 1A, and the terminal 18b on the opposite end side of the terminal 18a of the connecting board 18 and the terminal 14a insert-molded in the case 14 of the inverter assembly 1B are fixed with screws. The protective cover 15 is attached while being electrically connected.

In the above-mentioned controller-integrated rotary electric machine, as shown in FIG. 4, each power module 9 is evenly arranged in an arc shape on the mounting surface 19a on the anti-rear bracket side of the heat sink 19, and further, the control board 17 On the anti-heat sink side, the capacitor unit 22 is arranged at intervals in an arc shape corresponding to the power module 9 so that an interference region 22c in which the projection surface of the power module 9 and the projection surface of the capacitor unit 22 overlap is formed. To.

With such a configuration, the power module can be arranged without being affected by the capacitor accommodating space, and space can be saved. At the same time, the capacitor unit 22 can be arranged without expanding the inverter assembly 1B in the radial direction. Expansion can be suppressed.

Further, as shown in FIG. 6, the B line wiring 28 and the GND line wiring 29 are arranged in parallel from between the B terminal 9a and the GND terminal 9b arranged on the inner peripheral side of the adjacent power module 9. It is bent vertically to the upper surface side of the power module, stretched so as to penetrate the substrate hole 17a provided in the control substrate 17, and connected to the capacitor unit 22 arranged on the upper surface of the control substrate 17 (FIGS. 3 and 3). 6).
Then, one of the vertically extended B line terminal 28a and the GND line terminal 29a (B line terminal 28a in the figure) is bent into a Z shape, and the other (GND line terminal 29a in the figure) is bent into a U shape. , Connected to the capacitor unit 22 with screws (see FIG. 6).
In the figure, the B line terminal 28a is bent into a Z shape and the GND line terminal 29a is bent into a U shape, but the B line terminal 28a may be bent into a U shape and the GND line terminal 29a may be bent into a Z shape. ..

With such a configuration, the B line terminal 28a and the GND line terminal 29a can be vertically projected from between the power modules and connected to the capacitor unit 22 while being arranged in parallel. Therefore, a loop between the power module 9 and the capacitor unit 22 can be connected. If the inductance can be reduced to 1/2, for example, the surge voltage can be reduced to 1/2.
Further, when the thermal influence from the power module 9 is large, the capacitor unit 22 can be mounted at an arbitrary distance from the power module 9, so that the capacitor 21 can be arranged without being affected by the heat.
Furthermore, by arranging the capacitor unit protruding from the lower surface of the heat sink on the upper surface side of the power module, an empty space is created on the lower surface of the heat sink, and the heat generated by the power module is dissipated by providing heat-dissipating fins on the lower surface of the heat sink. Therefore, the heat dissipation of the inverter assembly can be improved.

As described above, the inverter assembly according to the first embodiment is provided with a plurality of power modules arranged at intervals in an arc shape on the mounting surface of the heat sink, and is provided on the mounting surface and connected to each of the power modules. Power supply wiring and ground wiring, a control board provided with a control circuit for controlling the power module, and a plurality of capacitor units connected to each of the power modules and accommodating capacitors for absorbing switching surges. In the inverter assembly, the control board is held on the side of the mounting surface at a distance from each of the power modules, and the capacitor unit is placed on the anti-heat source side of the control board corresponding to the power module. The power supply wiring and the ground wiring are arranged at intervals in an arc shape, and the power supply wiring and the ground wiring are arranged on the inner peripheral side of the plurality of power modules on the mounting surface, and their tips are arranged at positions corresponding to the adjacent power modules. It extends in a direction perpendicular to the mounting surface and is connected to each of the capacitor units.

With such a configuration, in the inverter assembly according to the first embodiment, the power module can be efficiently arranged regardless of the quantity and area of the capacitor, the distance from the power module is shortened, and the capacitor unit is efficiently arranged. It is possible to reduce the switching surge and to reduce the size of the inverter assembly.
Insulation is ensured and vibration resistance is ensured by integrating the entire inverter assembly with a filler for the power module, control board, and capacitor unit arranged inside the case formed on the outer circumference of the heat sink so as to surround the control board. It is possible to improve the property and prevent foreign matter from entering.

Embodiment 2.
8 and 9 are perspective views showing the capacitor unit 22 according to the second embodiment, FIG. 10 is a perspective view of a main part showing a fitting portion 25 provided in the case 14, and FIG. 11 is a fitting of the capacitor unit and the case. FIG. 12 is a perspective view showing a state, FIG. 12 is a perspective view showing a connection state between the capacitor housed in the capacitor unit and the power supply terminal in FIG. 11, and FIG. It is a schematic cross-sectional view which shows the connection state with a terminal.

The capacitor unit 22 has a rib portion 23 formed on an outer peripheral portion and a bottom surface facing the control substrate 17, and one or a plurality of through holes 23a are formed in the rib portion 23.
These through holes 23a are preferably φ0.8 mm or more in order to improve the fluidity of the filler 27.
In the figure, the plurality of through holes 23a are arranged in a straight line, but an arrangement other than the straight line shifted by 0.1 mm or more from the straight line is also effective.

The capacitor unit 22 and the case 14 are connected by screws, and fitting portions are provided on the lower surface side of the capacitor unit 22 and the capacitor unit connection surface 14b of the case 14.
In the illustrated example, a concave fitting portion 24 is provided on the capacitor unit 22 side and a convex fitting portion 25 is provided on the case 14 side, and both fitting portions are fitted and connected by screws.
Each of the fitting portions 24 and 25 is provided with a protrusion 24a for positioning and a notch 25a, and are fitted to each other (see FIGS. 9-11).
The fitting portion 25 on the case 14 side is formed in a tubular shape so as to surround the B line terminal 28a and the GND line terminal 29a (see FIG. 10).
Further, although not shown, the fitting portions 24 and 25 may be cylindrical, square, or tapered fitting portions.

Further, the capacitor unit 22 is provided with a groove 23d between the capacitor B terminal 22a and the capacitor GND terminal 22b, and packing rubber is inserted into the groove 23d or silicon rubber is applied and fitted to the case 14. In this state, an isolation wall is formed between the capacitor B terminal 22a and the capacitor GND terminal 22b to separate them (see FIG. 13).

As described above, according to the second embodiment, the capacitor unit 22 is fitted and held in the case 14 and screwed. Therefore, when the filler is applied, the liquid filling that rises from the lower side of the capacitor unit 22 is filled. Since the material 27 permeates through the rib portion end side of the capacitor unit 22 and the through hole 23a, the flow of the filler 27 can be ensured, and the filler 27 can be injected in a short time.
Further, after the filler is cured, the filler 27 is interposed on the upper surface side and the lower surface side of the rib portion 23 of the capacitor unit 22 through the through hole 23a to form the anchor portion 27a, so that the condenser unit 22 and the case The joint of 14 becomes stronger and the mechanical strength increases (see FIG. 13).
As a result, the rotation / movement when the capacitor unit 22 is mounted on the case 14 and the rotation / movement when the screws are fastened can be suppressed, and the capacitor unit 22 can be fastened to the case 14 at an accurate position.

Further, in a state where the capacitor unit 22 is connected to the case 14, a sealing structure for separating the two is formed between the capacitor B terminal 22a and the capacitor GND terminal 22b of the capacitor unit 22, and the capacitor GND terminal is formed from the capacitor B terminal side. Water can be prevented from entering the capacitor B terminal side from the side or the capacitor GND terminal side, and electrical insulation can be ensured.

Embodiment 3.
FIG. 14 is a perspective view of the capacitor unit 22 showing the third embodiment.
A wave-shaped portion 23b is provided on the outer peripheral side of the capacitor unit 22 and on the rib portion 23. When the wave shape is composed of a mold, if it is too small, the strength of the mold may decrease and it may lead to breakage. Therefore, the wave shape is composed of a circle having a diameter of 1 mm or more.

As described above, according to the third embodiment, the filler 27 enters the wave-shaped portion 23b of the capacitor unit 22 and suppresses the movement of the capacitor unit 22 in the rotation direction.
Since the rotational movement of the capacitor unit 22 integrated with the case 14 can be suppressed, it is possible to suppress the shaking during vibration.

Embodiment 4.
FIG. 15 is a perspective view of the capacitor unit showing the fourth embodiment.
The capacitor unit 22 is formed so that the contact surface 23c with the filler 27 has a surface roughness larger than that of the other surfaces.
As a result, the biting of the filler 27 on the contact surface 23c between the capacitor unit 22 and the filler 27 is improved.
If the contact surface 23c with the filler 27 is a finished surface having, for example, an arithmetic average roughness Ra1.6 or less, the slidability is improved, which is not desirable for the role of being caught, and the surface roughness of the contact surface 23c is Ra3.2 or higher is desirable.
Further, although not shown, the same effect can be obtained by forming the contact surface 23c in a knurled shape.

As described above, according to the fourth embodiment, the condenser unit 22 has a better bite to the filler 27, so that the rough surface plays a role of catching when the shaking occurs during vibration, and the inside of the condenser unit 22 The vibration of the capacitor 21 can be suppressed.

Embodiment 5.
FIG. 16 is a cross-sectional view of a main part of the inverter assembly showing the fifth embodiment.
In the fifth embodiment, a step 26 is provided between the capacitor B terminal 22a of the capacitor unit 22 and the capacitor GND terminal 22b, and a step is also provided between the B line terminal 28a and the GND line terminal 29a.

As described above, according to the fifth embodiment, by providing the step 26 between the terminals of the capacitor unit 22, the creepage distance or the space distance between the terminals is widened, and the electrical insulation property when salt water is submerged is improved. Can be done.

Although the present application describes various exemplary embodiments and examples, the various features, embodiments, and functions described in one or more embodiments are applications of a particular embodiment. It is not limited to, but can be applied to embodiments alone or in various combinations.
Therefore, innumerable variations not illustrated are envisioned within the scope of the techniques disclosed in the present application. For example, it is assumed that at least one component is modified, added or omitted, and further, at least one component is extracted and combined with the components of other embodiments.

1: Control device integrated rotary electric machine, 1A: Motor unit, 1B: Inverter assembly, 2: Rotor, 2a: Field winding, 3: Capacitor, 3a: Three-phase stator winding, 3b: Stator lead wire 4: Front bracket, 5: Rear bracket, 6: Magnetic pole position detection sensor, 6a: Sensor stator, 6b: Sensor rotor, 7, 8: Bearing, 9: Power module, 9a: B terminal, 9b: GND terminal, 9c : Signal terminal, 10: Field module, 11: Rotor shaft, 12: Pulley, 13: Slip ring, 14: Case, 14a: Terminal, 14b: Capacitor unit connection surface, 15: Protective cover, 16: Brush, 16a: Brush holder, 17: Control board, 17a: Board hole, 18: Connecting board, 18a, 18b: Terminal, 19: Heat sink, 19a: Mounting surface, 19b: Cooling fin, 20a, 20b: Fan, 21: Capacitor, 22: Capacitor unit, 22a: Capacitor B terminal, 22b: Capacitor GND terminal, 22c: Interference area, 23: Rib part, 23a: Through hole, 23b: Wave shape part, 23c: Contact surface, 23d: Groove part, 24: Fitting Part, 24a: Protrusion part, 25: Fitting part, 25a: Notch part, 26: Step, 27: Filling material, 27a: Anchor part, 28: B line wiring, 28a: B line terminal, 29: GND line wiring , 29a: GND line terminal

The inverter assembly disclosed in the present application includes a plurality of power modules arranged at intervals in an arc shape on a mounting surface of a heat sink, and a power supply wiring and a ground provided on the mounting surface and connected to each of the power modules. In an inverter assembly including a control board provided with wiring and a control circuit for controlling the power module, and a plurality of capacitor units connected to each of the power modules and accommodating capacitors for absorbing switching surges. The control board is held on the side of the mounting surface at a distance from each of the power modules, and the capacitor units are spaced apart from each other of the power modules in an arc shape on the anti-heat source side of the control board corresponding to the power modules. The power supply wiring and the ground wiring are arranged on the inner peripheral side of the plurality of power modules on the mounting surface, and their tips are arranged with the mounting surface from a position corresponding to the adjacent power modules. The power module, the control board, and the capacitor unit are filled materials inside a case that is stretched in a vertical direction and connected to each of the capacitor units and is formed so as to surround the control board on the outer periphery of the heat sink. Each of the capacitor units is fixed to the case while being held by the case and the fitting portion .

Claims (13)

A plurality of power modules arranged at intervals in an arc on the mounting surface of the heat sink, power supply wiring and ground wiring provided on the mounting surface and connected to each of the power modules, and control of the power module. In an inverter assembly including a control board provided with a control circuit to perform, and a plurality of capacitor units connected to each of the power modules and accommodating capacitors for absorbing switching surges.
The control board is held on the side of the mounting surface at a distance from each of the power modules, and is held.
The capacitor units are arranged so as to correspond to the power module on the anti-heat sink side of the control board at intervals in an arc shape.
The power supply wiring and the ground wiring are arranged on the inner peripheral side of the plurality of power modules on the mounting surface, and their tip portions extend in a direction perpendicular to the mounting surface from a position corresponding to the adjacent power modules. An inverter assembly characterized in that it is connected to each of the capacitor units. The inverter assembly according to claim 1, wherein the tip portions of the power supply wiring and the ground wiring penetrate the control board in a direction perpendicular to the mounting surface and are arranged in parallel with each other. The inverter assembly according to claim 1 or 2, wherein the tip portions of the power supply wiring and the ground wiring are bent in a Z shape on one side and in a U shape on the other side. One of claims 1 to 3, wherein each of the capacitor units is arranged so as to form an interference region in which the vertical projection plane overlaps the vertical projection plane of the corresponding power module. The inverter assembly according to one item. The inverter assembly according to any one of claims 1 to 4, wherein each of the power modules has a trapezoidal outer shape and is evenly arranged in an arc shape with respect to the mounting surface. Claim 1 is characterized in that the power module, the control board, and the capacitor unit are integrally solidified by a filler inside a case formed on the outer periphery of the heat sink so as to surround the control board. The inverter assembly according to any one of 5 to 5. The inverter assembly according to claim 6, wherein each of the capacitor units is fixed to the case while being held via the case and the fitting portion. The sixth or seventh aspect of the present invention, wherein the capacitor unit has an isolation wall that separates the connection portion of the power supply wiring and the connection portion of the ground wiring in a state of being fitted in the case. Inverter assembly. The capacitor unit has a rib portion formed so as to face the control substrate, and the rib portion is provided with a through hole for ensuring the flow of the filler when the filler is applied to the case. The inverter assembly according to any one of claims 6 to 8. The inverter assembly according to claim 9, wherein a wave-shaped portion is provided on the outer periphery of the capacitor unit and the rib portion. The inverter assembly according to any one of claims 6 to 10, wherein the capacitor unit has a surface roughness on a contact surface with the filler that is larger than that of the other surface. The inverter assembly according to any one of claims 1 to 11, wherein the capacitor unit has a step for widening the creepage distance between the connection portion of the power supply wiring and the connection portion of the ground wiring. A rotor rotatably held by a rotating shaft supported by a bearing, a stator arranged around the rotor and having a stator winding, a front bracket and a rear bracket for holding the bearing, and the like. In a rotating electric machine equipped with an inverter assembly that is integrally mounted on the rear bracket and controls the current flowing through the stator winding based on the rotation angle of the rotating shaft.
A rotary electric machine with an integrated control device, wherein the inverter assembly is the inverter assembly according to any one of claims 1 to 12.

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