JP2021164347A - Control apparatus built-in rotary electric machine - Google Patents

Abstract

To provide a control apparatus built-in rotary electric machine capable of detecting an abnormality of a cooling fluid channel, and suppressing a driving or a power generation action of a rotary electric machine part at an abnormality.SOLUTION: A control apparatus built-in rotary electric machine to which a cooling fluid channel of an inverter device and a cooling fluid channel of a rear side coil end of an armature winding are communicated, compares a first temperature detector attached to a front side coil end part of the armature winding, a second temperature detector attached to the rear side coil end part of the armature winding, and temperature information from the first temperature detector and the temperature information from the second temperature detector, and, when a difference in temperature between them, determines that the cooling fluid channel of the inverter device is in an abnormality, generates an output, and suppresses an operation of the rotary electric machine part.SELECTED DRAWING: Figure 1

Description

The present application relates to a rotary electric machine integrated with a control device.

As a conventional rotary electric machine, a thermistor is installed around the armature winding in order to detect the temperature of the armature winding with high responsiveness and high accuracy (see, for example, Patent Document 1).
Further, it is known that a thermistor is installed in the inverter module to suppress or stop the power generation action of the generator motor when it is determined that the inverter is overheated (see, for example, Patent Document 2).

Japanese Unexamined Patent Publication No. 2008-131775 Japanese Unexamined Patent Publication No. 10-191691

However, in the fluid fluid of Patent Document 1 mounted on an automobile, although it is possible to detect the temperature of the armature winding with high responsiveness and high accuracy, the power converter in the fluid fluid with integrated control device When the cooling fluid passage and the cooling fluid passage of the armature winding part are communicated with each other, the cooling fluid passage may be blocked by the hoisting of muddy water, gravel, pebbles, etc. by the automobile tires during operation, and the cooling is performed. The abnormality of the fluid passage could not be determined.

Further, in the rotary electric machine of Patent Document 2, although it is possible to suppress or stop the drive or the power generation action of the generator motor when the inverter is overheated, the abnormality of the cooling fluid passage is determined in the same manner as described above. I couldn't.

The present application has been made to solve the above-mentioned problems, and is a control device integrated type that can detect an abnormality in a cooling fluid passage in a controller-integrated rotary motor and suppress abnormal heating. The purpose is to provide an AC motor generator.

The controller-integrated rotary electric machine according to the present application has a housing composed of a front bracket and a rear bracket, an armature winding, a stator fixed to the housing, and rotatably supported by the housing, facing the stator. It is provided with a rotating electric machine part consisting of a rotor to which a field winding, a front fan and a rear fan are attached, and an inverter device provided on the rear bracket side to control the rotating electric machine part, and cools the inverter device. A controller-integrated rotary electric machine in which the fluid passage and the cooling fluid passage of the coil end on the rear side of the armature winding are communicated with each other, and the first temperature attached to the coil end on the front side of the armature winding. Comparing the detector with the second temperature detector attached to the rear coil end of the armature winding, the temperature information from the first temperature detector and the temperature information from the second temperature detector, When the temperature difference between the two exceeds a predetermined threshold, a determination circuit that determines that the cooling fluid passage of the inverter device is abnormal and generates an output, and controls the inverter device based on the output of this determination circuit. It is characterized in that it is provided with an output circuit, and when an abnormality in the cooling fluid passage is determined by the determination circuit, the operation of the rotary electric machine unit is suppressed.

According to the controller-integrated AC motor generator disclosed in the present application, a first temperature detector and a second temperature detector are provided at the front side coil end portion and the rear side coil end portion of the armature winding, respectively. By comparing the temperature information of both, it is possible to detect an abnormality in the cooling fluid passage, and thereby it is possible to prevent abnormal heating of the rotating electric machine portion.

It is sectional drawing which shows the structure of the control device integrated rotary electric machine which concerns on Embodiment 1. FIG. It is a circuit diagram which shows the structure of the electric system of the control device integrated rotary electric machine which concerns on Embodiment 1. FIG. It is a figure for demonstrating the cooling action in the control device integrated rotary electric machine which concerns on Embodiment 1. FIG. It is a top view which shows the main part structure of the control device integrated rotary electric machine which concerns on Embodiment 1. FIG. It is a top view which shows the other main part structure of the control device integrated rotary electric machine which concerns on Embodiment 1. FIG. It is a block diagram which shows the control system of the cooling action in the control device integrated rotary electric machine which concerns on Embodiment 1. FIG. It is a perspective view which shows the structure of the armature winding in Embodiment 1. FIG. It is a block diagram which shows the control system of the cooling action in the control device integrated rotary electric machine which concerns on Embodiment 2. FIG. It is a figure which shows the operation characteristic of the control device integrated rotary electric machine which concerns on Embodiment 2. FIG.

Embodiment 1.
FIG. 1 is a cross-sectional view showing the structure of a rotary electric machine integrated with a control device according to the first embodiment.
In the figure, the rotary electric machine 1 integrated with a control device is an inverter device 3 including a rotary electric machine unit 2 having a power generation function and an electric function, a DC AC power mutual conversion circuit, and a control circuit unit that controls the DC AC power mutual conversion circuit. And have.
Here, the rotary electric machine portion 2 is housed in a housing 6 including a front bracket 4 and a rear bracket 5, and both ends of the rotary shaft 7 are attached to the front bracket 4 and the rear bracket 5 with a front bearing 8 and a rear. A rotor 10 rotatably supported via a bearing 9 and a stator 11 provided on the outer periphery of the rotor 10 and sandwiched and fixed to the front bracket 4 and the rear bracket 5 are provided.

Further, the rotary electric machine unit 2 includes a rotation sensor 12 that detects the rotation state of the rotor 10 via the rotation shaft 7, a slip ring 13 provided at the tip of the rotation shaft 7 protruding from the rear bracket 5, and a brush. It is housed in the holder 14 and includes a pair of brushes 15 whose tip surface is in sliding contact with the slip ring 13.
Further, the rotor 10 includes a field iron core 16 and a field winding 17 wound around the field iron core 16.

A front fan 18a and a rear fan 18b for generating cooling air are attached to both end surfaces of the field core 16. Further, the field winding 17 is electrically connected to the slip ring 13 via a connecting wire 19, and a field current is supplied from the brush 15 via the slip ring 13. Further, one end of the rotating shaft 7 to which the rotor 10 is attached protrudes from the front bracket 4, and the tip of the rotating shaft 7 is used to transfer torque to and from the engine (not shown) via the belt 23 in both directions. The pulley 22 is attached.

On the other hand, the stator 11 is wound around the stator core 20 and the stator core 20, and is a rear coil end portion 21a facing the front fan 18a of the rotor 10 and a rear facing the rear fan 18b of the rotor 10. It includes an armature winding 21 having a side coil end portion 21b.
Further, a first temperature detector 101 and a second temperature detector 102 are attached to the front side coil end portion 21a and the rear side coil end portion 21b of the armature winding 21, respectively.

Further, the inverter device 3 provided on the outside of the housing 6 on the opposite side of the pulley 22 is covered with a protective cover 36 to supply AC power to the armature winding 21 and to the field winding 17. It includes a DC AC power mutual conversion circuit unit that energizes a DC current, and a control circuit unit that controls the operation of the DC AC power mutual conversion circuit unit.
The DC AC power mutual conversion circuit unit includes a power module 29 including a semiconductor switching element 28 for a power circuit that supplies AC power to the armature winding 21, and a field circuit that energizes the field winding 17 with a DC current. A field module 31 including a semiconductor switching element 30 for cooling, a cooling heat sink 34 on which a power module 29 and a field module 31 are mounted and having fins for heat dissipation 33, terminals of the power module 29, and a field module 31. It includes a case 32 for a power module and a case 37 for a field module, each of which is electrically connected to a terminal (neither shown) and has an insert-molded case terminal (not shown).
The heat sink 34 is configured such that the control circuit portion is integrated with the rotary electric machine portion 2 by screwing the fixing portions at the four corners, which will be described later, to the rear bracket 5 with bolts or the like. Further, the control circuit unit includes control boards 38 and 39 on which control circuits for driving and controlling the power module 29 and the field module 31 are formed.

FIG. 2 is a circuit diagram showing a configuration of an electric system in the controller-integrated rotary electric machine according to the first embodiment.
In the figure, the power module 29 and the field module 31 are supplied with electric power from the battery 35 and their operating states are controlled by the control circuit 40. The power module 29 has a configuration in which six sets of upper arms and lower arms are connected in series, and the ground of the lower arms is electrically connected to the rear bracket 5 via a heat sink 34. Similarly, the ground of the arm of the field module 31 is also electrically connected to the rear bracket 5 via the heat sink 34.

Next, the operation of the control device integrated rotary electric machine 1 as described above will be described.
First, when the engine is started, DC power is supplied from the battery 35 to the power module 29 of the inverter device 3 and converted into three-phase AC power, and this three-phase AC power is supplied to the armature winding 21. On the other hand, the field current controlled by the field module 31 is supplied to the brush 15, the slip ring 13, the connecting wire 19, and the field winding 17, and is supplied to the field winding 17 of the rotor 10 by the rotating magnetic field. The rotor 10 is rotationally driven. The rotational torque of the rotor 10 is transmitted to the engine via the rotating shaft 7, the pulley 22 and the belt 23, and the engine is started.

When the engine is started, the rotational torque of the engine is transmitted to the rotary electric machine unit 2 via the crank pulley, the belt 23, and the pulley 22. As a result, the rotor 10 is rotated, and a three-phase AC voltage is induced in the armature winding 21. This three-phase AC voltage is rectified into DC power by the power module 29 and supplied to the battery 35 and the electric load.

Next, the cooling mechanism of the rotary electric machine 1 integrated with the control device will be described with reference to FIG.
First, when the rotor 10 is rotationally driven, the front fan 18a and the rear fan 18b are rotated, and as shown by the arrows in FIG. 3, on the front side, the first provided on the inner peripheral side of the front bracket 4 in the axial direction. The outside air is sucked from the intake hole of the armature, bent in the centrifugal direction by the front fan 18a, and provided on the radial outer peripheral side of the front bracket 4 while cooling the front coil end portion 21a of the armature winding and the front bracket 4. It will be discharged from the exhaust hole.

Further, on the rear side, the flow flows from the second intake hole provided on the radial outer circumference of the protective cover 36 to between the fins 33 of the heat sink 34 existing between the base surface of the heat sink 34 and the rear end surface of the rear bracket 5. After passing through the ventilation holes provided on the outer periphery of the holding portion of the rear bearing 9 of the rear bracket 5, the rear fan 18b bends the rear bracket 5 in the centrifugal direction to allow the rear coil end portion 21b and the rear bracket 5 of the armature winding 21 to be bent. While cooling, the rear bracket 5 is discharged from the exhaust hole provided on the outer peripheral side in the radial direction.
That is, when the cooling fluid passes through the fins 33 of the heat sink 34, the heat sink 34 can be cooled, and the temperature rise of the power module 29 and the field module 31 can be suppressed.

FIG. 4 is a view of the heat sink 34 side from the front side along the AA line at the position between the rear bracket 5 and the fins 33. In order to reduce the temperature rise of the power module 29 and the field module 31, a plurality of fins 33 are arranged in the circumferential direction, and the cooling fluid passes between the fins 33 and the fins 33 from the outer diameter side to the inner diameter side. A passage is formed.
Here, as an example, the thickness of the fin 33 in the circumferential direction is set to 2 mm, the width of the cooling passage between the fin 33 and the fin 33 is set to 4 mm, and the four corners are set to be fixed to the rear bracket 5. A fixing portion 34a is provided.

In FIG. 5, for example, the outer diameter side is increased so as to increase the cooling fluid velocity on the inner diameter side between the fins 33 and the fins 33 in order to reduce the further temperature rise of the power module 29 and the field module 31 with respect to FIG. The temperature is 5 mm and the inner diameter side is 3 mm, and the cooling fluid passage is gradually narrowed from the outer diameter side to the inner diameter side.

When the cooling fluid passage is set narrow as described above, if muddy water, gravel, pebbles, etc. are wound up by the automobile tires when driving the automobile, the cooling fluid passage is likely to be blocked, and the blockage of the cooling fluid passage causes the cooling fluid passage to be blocked. The power module 29 and the field module 31 are not cooled, which may cause a failure due to abnormal heat generation.
Further, the armature winding 21 prevents a short circuit between adjacent windings in the slot of the stator core 20 by an insulating coating, but when the cooling fluid passage is blocked, the insulating coating becomes abnormally high temperature. Therefore, there is a risk of short-circuiting between phases when the temperature reaches the dielectric breakdown temperature.

In order to prevent such a failure, in the first embodiment, the first temperature detector 101 is attached to the front coil end portion 21a of the armature winding 21 and the second temperature is attached to the rear coil end portion 21b. A detector 102 is provided to detect the temperature difference between the temperature detectors 101 and 102 to prevent abnormal heat generation.
FIG. 6 is a block diagram showing a control system for preventing this abnormal heat generation.
In the figure, the temperature information connected to the first temperature detector 101 and the second temperature detector 102 and detected by the temperature detectors 101 and 102 is compared, and the temperature difference exceeds a predetermined threshold value. At that time, the determination circuit 103 that determines that the cooling fluid passage is abnormal, the output circuit 104 that receives the output of the determination circuit 103 and generates a control signal to control the control circuit 40 in the inverter device 3, and the cooling fluid passage. The display 105 for displaying the abnormality of the above is provided.
As the first temperature detector 101 and the second temperature detector 102, a thermistor can be used, or a thermocouple can also be used.

Next, the specific operation of the control system for preventing abnormal heat generation will be described.
First, when the cooling fluid passage is normal, the temperature of the first temperature detector 101 of the front side coil end portion 21a in the armature winding 21 becomes about 150 ° C., and the temperature of the first temperature detector 101 of the front side coil end portion 21a becomes about 150 ° C. The temperature detector 102 has a temperature of about 160 ° C., and the temperature difference between the two is about 10 ° C.
On the other hand, when the cooling fluid passage is blocked, the cooling action is not sufficiently performed, and the first temperature detector 101 shows a high temperature of 170 ° C. and the second temperature detector 102 shows a high temperature of 220 ° C.. The difference is about 50 ° C. With this temperature difference of 50 ° C. as a threshold value, when the detected temperature difference exceeds the threshold value, the determination circuit 103 determines that there is an abnormality in the cooling fluid passage, and supplies an output to the control circuit 40 via the output circuit 104. .. In response to this output, the control circuit 40 suppresses the currents of the armature winding 21 and the field winding 17 of the inverter device 3, and limits the amount of heat generated in the power module 29 and the field module 31. Can be done. Further, at this time, by displaying on the display 105 that there is an abnormality in the cooling fluid passage due to the output of the output circuit 104, it is possible to promote the process of returning the cooling fluid passage to the normal state.

As shown in FIG. 3, the first temperature detector 101 of the front coil end portion 21a has a thickness t1 in the axial direction and is arranged within the fan blade width h1 of the front fan 18a. Similarly, the second temperature detector 102 of the rear coil end portion 21b has a thickness t2 in the axial direction and is arranged within the fan blade width h2 of the front fan 18a. Therefore, the outer diameter side of the fan blade is the discharge side of the cooling fluid, which matches the position of the fan blade and is generated when the vehicle is running by bringing the fan blade close to the temperature detector 101 and the temperature detector 102. Since the temperature can be detected accurately without being affected by the running wind on the outer peripheral portion of the rotary electric machine 1 integrated with the control device, it is possible to accurately determine the abnormality of the cooling fluid passage.

FIG. 7 is a perspective view showing the structure of the armature winding 21 according to the first embodiment.
In the figure, the first temperature detector 101 and the second temperature detector 102 are on the inner diameter side of the innermost layer of the front side coil end portion 21a and the rear side coil end portion 21b of the armature winding 21 in the stator 11, respectively. It is attached to. By arranging the temperature detector 101 and the second temperature detector 102 at such a position, the temperature is less likely to be affected by the running wind on the outer periphery of the control device integrated rotary electric machine 1 generated when the vehicle is running, and the temperature is accurate. It becomes possible to detect it well, and it is possible to accurately determine the abnormality of the cooling fluid passage.

As an example, it is desirable that the first temperature detector 101 of the front coil end portion 21a and the second temperature detector 102 of the rear side coil end portion 21b are located at the winding portions of the same phase. Is attached to the U-phase winding part.
With this configuration, even if there is no abnormality in the cooling fluid passage, if the U-phase coil is short-circuited between layers (layer short) in the same slot, the U-phase coil may generate abnormal heat, but winding in the axial direction Since the first temperature detector 101 and the second temperature detector 102 exchange heat with each other within the range of the line length L and the temperatures are averaged, the first temperature detector 101 and the second temperature detector 101 and the second temperature detector 102 The temperature difference of the temperature detector 102 of the above does not occur. Therefore, when the phase coils are short-circuited (layer short-circuited) in the same slot, it is possible not to determine the abnormality of the cooling fluid passage.

Further, as another embodiment, when the two sets of three-phase armature windings 21 are Y-connected, the first temperature detector 101 of the front side coil end portion 21a and the second of the rear side coil end portion 21b are connected. The temperature detector 102 is preferably located at the neutral point connection portion of the three phases, and the neutral point connection of one of the three phases U phase, V phase, and W phase is performed at the front side coil end portion 21a, and the other. By connecting the neutral points of the three phases X-phase, V-phase, and W-phase at the rear coil end portion 21b and arranging the temperature detectors 101 and 102 at the neutral point connection portions, respectively, one of the three phases. The U-phase, V-phase, W-phase and the other three-phase X-phase, V-phase, and W-phase each transfer heat to and from each other, and the leveled temperature can be detected for each. In this case, it is not necessary to arrange the temperature detectors in each of the 6 pairs of the U phase, the V phase, the W phase, the X phase, the V phase, and the W phase, and there is an advantage that the apparatus can be simplified.

Embodiment 2.
FIG. 8 is a block diagram showing a control system for cooling action in the controller-integrated rotary electric machine according to the second embodiment.
The second embodiment is configured to supply the output of the rotation sensor 12 attached to the rotation shaft 7 to the determination circuit 103 and limit the operation of the determination circuit 103 with respect to the first embodiment.
Here, since the rear fan 18b of the rotor 10 rotates in synchronization with the rotation shaft 7, the flow rate of the cooling fluid passage changes according to the rotation speed. Further, the rotary electric machine unit 2 starts power generation at a rotation speed of around 1000 r / min, and the generated current rises to around 6000 r / min, and when it exceeds 6000 r / min, the generated current becomes almost constant due to the armature reaction. It has the following characteristics.

FIG. 9 shows the temperature measurement values obtained by the first temperature detector 101 at the front side coil end portion 21a of the armature winding 21 and the second temperature detector 102 at the rear side coil end portion 21b. .. As shown in FIG. 9, the characteristics of the temperature change of the coil end portions 21a and 21b are that the flow rate of the cooling fluid passage is proportional to the rotation speed, and that the rotary electric machine portion 2 has a rotation speed of the rotor 10 of 1000r. Since power generation starts near / min and the power generation current rises to around 6000r / min, the power generation current is compared with the flow rate of the cooling fluid passage at a rotation speed of 1000 to 3000r / min. The temperature of the coil end portions 21a and 21b is low. On the other hand, when the rotation speed is 3000 to 6000 r / min, the flow rate of the cooling fluid passage is small with respect to the increase in the generated current, so the temperature of the coil end portions 21a and 21b becomes high, and when the rotation speed is 6000 r / min or more, the flow rate is high. Since the flow rate of the cooling fluid passage increases, the temperatures of the coil end portions 21a and 21b decrease.

Therefore, when the cooling fluid passage is normal, the temperature difference between the temperature Tf1 of the front coil end portion 21a of the armature winding 21 and the temperature Tf2 of the rear coil end portion 21b is about 10 ° C., but the cooling fluid When there is an abnormality in the passage, especially when the rotation speed is in the range of 3000 to 6000 r / min, the temperature Tf2 of the front coil end portion 21a of the armature winding 21 and the temperature Tr2 of the rear coil end portion 21b The temperature difference between the two is as large as about 50 ° C., and a remarkable difference occurs. Therefore, if the determination circuit 103 is configured so as to determine an abnormality based on the temperature information detected within this rotation speed range, the cooling fluid passage can be accurately constructed. It becomes possible to detect an abnormality.

In the above embodiment, the temperature and the temperature difference for detecting the abnormality of the cooling fluid passage have been specified and described, but this value varies depending on the structure of the rotary electric machine 1 integrated with the control device. By operating the device in advance and selecting a desirable value, the abnormality detection of the cooling fluid passage can be optimized.
Further, when the cooling fluid passage is abnormal, the display 105 blinks the battery warning light in the installation panel of the vehicle at regular time intervals to indicate that the cooling fluid passage is abnormal. It can be recognized by the driver and can prompt the process of returning the cooling fluid passage to the normal state. In particular, in a general automobile, the battery warning light is turned off when the rotary electric machine with integrated control device is normal, and the battery warning light is turned on when the rotary electric machine with integrated control device is non-power generation or no control. Therefore, the battery warning light can also be used as the display 105 by adopting a different display form in which the battery warning light blinks at regular time intervals.

Although the present application describes various exemplary embodiments and examples, the various features, embodiments, and functions described in one or more embodiments are specific embodiments. It is not limited to the application of, but can be applied to the embodiment 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, 2: Rotary electric machine part, 3: Inverter device,
4: Front bracket, 5: Rear bracket, 6: Housing,
10: Rotor, 11: Stator, 12: Rotor sensor, 17: Field winding,
18a: Front fan, 18b: Rear fan, 21: Armature winding,
21a: Front coil end, 21b: Rear coil end,
29: Power module, 31: Field module, 33: Fins,
34: heat sink, 35: battery, 40: control circuit,
101: First temperature detector, 102: Second temperature detector, 103: Judgment circuit,
104: Output circuit, 105: Display

Claims (9)

It has a housing composed of a front bracket and a rear bracket, an armature winding, a stator fixed to the housing, rotatably supported by the housing, arranged facing the stator, and field wound. A rotating electric machine consisting of a wire, a rotor with a front fan and a rear fan attached,
A control provided on the rear bracket side and provided with an inverter device for controlling the rotary electric machine unit, in which the cooling fluid passage of the inverter device and the cooling fluid passage of the rear coil end of the armature winding are communicated with each other. It is a device-integrated rotary electric machine,
The first temperature detector attached to the front side coil end portion of the armature winding, the second temperature detector attached to the rear side coil end portion of the armature winding, and the first one. The temperature information from the temperature detector is compared with the temperature information from the second temperature detector, and when the temperature difference between the two exceeds a predetermined threshold, it is determined that the cooling fluid passage of the inverter device is abnormal. A determination circuit for generating an output and an output circuit for controlling the inverter device based on the output of the determination circuit are provided, and when an abnormality in the cooling fluid passage is determined by the determination circuit, the operation of the rotary electric machine unit is performed. A rotary electric machine with an integrated control device, which is characterized by suppressing the temperature. The first temperature detector at the front coil end portion of the armature winding has a thickness in the rotation axis direction of the rotor, and this thickness is arranged within the range of the fan blade width of the rotor. At the same time, it is placed on the outer diameter side of the fan blade.
The second temperature detector at the rear coil end portion of the armature winding has a thickness in the rotation axis direction, and this thickness is arranged within the range of the fan blade width of the rotor, and the fan. The controller-integrated rotary armature according to claim 1, wherein the rotary electric machine is arranged on the outer diameter side of the blade. The first temperature detector at the front coil end and the second temperature detector at the rear coil end of the armature winding are arranged in the innermost layer of the armature winding and in the same phase winding. The controller-integrated rotary armature according to claim 1 or 2, wherein the rotary electric machine is characterized in that. The armature winding is composed of two sets of three-phase Y connections, and the first temperature detector at the front coil end portion of the armature winding is arranged at the neutral point connection portion of one of the three phases. The second temperature detector at the rear coil end portion of the armature winding is located at the other three-phase neutral point connection portion, according to claim 1 or 2. Control device integrated rotary electric machine. According to claim 1, the inverter device includes a heat sink composed of a plurality of fins, and a cooling fluid passage from an outer diameter side to an inner diameter side is formed between the plurality of fins facing each other. The controller-integrated rotary electric machine according to any one of 4. The control device integrated type according to claim 5, wherein the cooling fluid passage width between the fins of the heat sinks facing each other in the inverter device is gradually narrowed from the outer diameter side to the inner diameter side. Rotating electric machine. A rotation sensor for detecting the rotation of the rotor is further provided, rotation information obtained by the rotation sensor is supplied to the determination circuit, and an abnormality in the cooling fluid passage by the determination circuit is performed within a predetermined rotation speed range. The controller-integrated rotary electric machine according to any one of claims 1 to 6, characterized in that It has a housing composed of a front bracket and a rear bracket, an armature winding, a stator fixed to the housing, rotatably supported by the housing, arranged facing the stator, and field wound. A rotating electric machine consisting of a wire, a rotor with a front fan and a rear fan attached,
A control provided on the rear bracket side and provided with an inverter device for controlling the rotary electric machine unit, in which the cooling fluid passage of the inverter device and the cooling fluid passage of the rear coil end of the armature winding are communicated with each other. It is a device-integrated rotary electric machine,
The first temperature detector attached to the front side coil end portion of the armature winding, the second temperature detector attached to the rear side coil end portion of the armature winding, and the first one. The temperature information from the temperature detector is compared with the temperature information from the second temperature detector, and when the temperature difference between the two exceeds a predetermined threshold, it is determined that the cooling fluid passage of the inverter device is abnormal. A determination circuit for generating an output and an output circuit for controlling the inverter device based on the output of the determination circuit are provided, and a signal indicating an abnormality in the cooling fluid passage is output based on the output of the output circuit. A rotary electric machine with an integrated control device, which is characterized by the above. The controller-integrated rotary electric machine according to claim 8, wherein the battery warning light in the installation panel of the vehicle is made to blink at regular time intervals by the output of the output circuit.

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