JP2010004598A - Controller integrated dynamo-electric machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a controller integrated dynamo-electric machine, having high driving and power generation capabilities, by eliminating temperature rise in a brush portion and a generation of worn brush powders and suppresses temperature rise in a field circuit portion. <P>SOLUTION: The controller integrated dynamo-electric machine comprises: a stator 3 wound with a stator winding 3B; a rotor 6 provided with a rotor core 8 fixed to a rotary shaft 7 and with a pair of claw-shaped magnetic poles 8A, 8B arranged via a space, opposite to the stator 3 formed, at the outer circumferential portion of the rotor core 8; a field core 11 fixed to a rear-side housing 2 and arranged relative to the rotor core 8 and the claw-shaped magnetic poles 8A, 8B via a space; a field circuit portion 20, arranged at the axially rearward position of the rear-side housing 2 for supplying a field current to a field winding 10; an inverter power circuit portion 30, arranged at the axially rearward position of the rear side housing 2 for supplying a poly-phase stator current to the stator winding 3B; and a control circuit portion 40, arranged at the axially rearward position of the rear-side housing 2 for controlling the field circuit portion 20 and the inverter power circuit potion 30. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a structure of a controller-integrated rotating electrical machine equipped with an inverter power circuit section, a field circuit section, and a control circuit section.

  Conventionally, Patent Document 1 discloses a case, a shaft that is rotatably supported by the case, a rotor coil that is fixed to the shaft and disposed in the case, and a current is passed to generate magnetic flux. A rotor having a plurality of magnetic poles magnetized by magnetic flux generated in the rotor coil, and attached to the case so as to cover the outer peripheral side of the rotor, generate an electromotive force by the rotating magnetic field generated by the rotor. A stator having a stator winding, and an axially spaced one end portion of the shaft, and rotatably arranged with the shaft, are electrically connected in series via the rotor coil. A pair of power supply members and a brush holding device disposed in the case so as to be located radially outside the pair of power supply members, the brush holding device being orthogonal to the axis of the shaft hole A pair of brush insertion holes facing each other in the axial direction of the shaft, and a brush holder portion detachably attached to the head of the brush holder portion to close the pair of brush insertion holes. A lid to be opened, a pair of brushes movably accommodated in the respective brush insertion holes, a pair of brush terminals serving as input / output terminals of the brush, and one end connected to one end of the brush, A pair of lead wires having the other end connected to the brush terminal and a conductive member disposed in each brush insertion hole and biasing the other end of each brush toward the shaft side to elastically contact the power supply member And a wear detecting terminal that is disposed in at least one of the pair of brush insertion holes and has a contact point that contacts the elastic member when the brush is worn by a predetermined amount. Vehicle radially outward of the Shihoruda portion is provided in the case so as to expose the lid alternator is disclosed. According to this vehicle alternator, brush wear can be detected before the occurrence of power generation failure or battery charging failure, and further, brush replacement can be performed without disassembling the generator.

  On the other hand, in recent years, promotion of idling stop has been taken up, and a rotating electrical machine having a drive function for starting an engine at the time of restarting as well as a generator has been developed. For example, Patent Document 2 discloses an inverter power circuit, a field circuit, and a controller-integrated rotating electrical machine equipped with these control circuits in order to provide not only a power generation function but also a drive function for starting an engine. Yes. The controller-integrated rotating electrical machine disclosed in Patent Document 2 has a configuration in which a rotor is provided with a field winding and a field circuit that supplies a field current to the field winding via a slip ring and a brush. Has been. In addition, the inverter circuit unit is arranged behind the bracket, is arranged in a substantially fan shape, the brush is arranged in the remaining fan-shaped part, and the field circuit unit and the control circuit unit are arranged behind the brush and the inverter circuit unit. The configuration that is shown is shown. In addition, a configuration is shown in which a slip ring is disposed behind the rear bearing and a magnetic pole position detection sensor is disposed behind the slip ring.

JP 2003-189555 A JP 2007-228641 A

  In the controller-integrated rotating electrical machine capable of driving and generating as shown in Patent Document 2, a large current flows through the battery harness, the stator winding, and the like at the start of driving, and the battery voltage of the vehicle decreases. Therefore, it is necessary to obtain the magnetomotive force necessary for the rotating electrical machine by reducing the number of turns of the field winding, reducing the resistance of the field winding, and increasing the current supplied to the field winding. For this reason, in order to obtain the same power generation output as that of the vehicle AC generator of the same size as shown in Patent Document 1, the field current during power generation is also larger than that of a normal alternator, and the temperature of the brush portion increases. However, there is a problem that brush wear powder increases and brush life is shortened. In addition, since the field current is increased, the heat generated by the brush is transmitted to the field circuit portion by heat transfer, which causes a rise in temperature of the field circuit portion.

  Further, a slip ring is disposed behind the rear bearing that holds the rotating shaft, and further, a magnetic pole position detection sensor for detecting the magnetic pole position of the rotor during driving is disposed behind the slip ring. For this reason, the distance from the rear bearing to the magnetic pole position detection sensor is increased, and the swing of the rotating shaft is increased, leading to a problem in that the accuracy of the magnetic pole position detection sensor is deteriorated. Further, there is a problem that the accuracy of the magnetic pole position detection sensor deteriorates due to magnetic noise due to brush jumping, magnetic noise due to slip ring and field current flowing through the brush. In addition, since the magnetic pole position detection sensor is disposed at the rear of the brush and the brush and the magnetic pole position detection sensor are connected by an air layer, the brush wear powder is applied to the magnetic pole position detection sensor. As a result, the accuracy of the magnetic pole position detection sensor may deteriorate.

  The present invention has been made to solve the conventional problems as described above. In the controller-integrated rotating electrical machine equipped with the inverter power circuit unit, the field circuit unit, and the control circuit unit, the temperature of the brush unit is reduced. An object of the present invention is to provide a rotating electrical machine having high drive and power generation capability while eliminating the rise and generation of brush wear powder, suppressing the temperature rise of the field circuit section.

  A controller-integrated rotating electrical machine according to the present invention includes a stator supported by a housing and wound with a stator winding, a rotating shaft rotatably supported by the housing, and a rotor core fixed to the rotating shaft. And a rotor having a pair of claw-shaped magnetic poles formed on the outer periphery of the rotor core and arranged opposite to the stator via a gap, and fixed to the rear housing, with respect to the rotor core and the claw-shaped magnetic poles A field core that is disposed through the air gap and on which the field winding is mounted, a field circuit section that is installed on the rear side in the axial direction of the rear housing and supplies a field current to the field winding, and a rear An inverter power circuit section that is installed on the rear side of the housing in the axial direction and supplies a multi-phase stator current to the stator winding; and a field circuit section and an inverter power circuit section that are installed on the rear side of the housing in the axial direction. Control circuit part to control It is intended.

  According to the present invention, in a controller-integrated rotating electrical machine equipped with an inverter power circuit unit, a field circuit unit, and a control circuit unit, a current is passed from the field circuit unit to the field winding without using a brush and a slip ring. Therefore, it is possible to eliminate the temperature rise of the brush portion and the generation of brush wear powder, to suppress the temperature rise of the field circuit portion, and to provide a rotating electrical machine with high driving and power generation capability. it can.

Embodiment 1 FIG.
1 is a cross-sectional view showing the structure of a control apparatus-integrated dynamoelectric machine according to Embodiment 1 of the present invention. 2 and 3 are views of the controller-integrated rotating electrical machine of FIG. 1 as viewed from the rear side, FIG. 2 is a view showing a state where the rear case is removed, and FIG. 3 is a view showing a state where the rear case is attached.

  In the figure, a controller-integrated rotating electrical machine 100 is rotatable to a stator 3 supported by a front bracket 1 and a rear bracket 2 as housings, a front bearing 4 of the front bracket 1 and a rear bearing 5 of the rear bracket 2. It has a rotor 6 fixed to a supported rotating shaft 7. An armature winding 3B is wound around the stator 3. The rotor 6 includes a rotor core 8 fixed to the rotating shaft 7 and a pair of claw-shaped magnetic poles 8A and 8B formed on the outer peripheral portion of the rotor core 8. The claw-shaped magnetic poles 8A and 8B are arranged to face the stator 3 and a field core 11 described later with a predetermined gap. The claw-shaped magnetic poles 8A and 8B are connected by a ring 19 formed of a nonmagnetic material so that the magnetic poles are alternately arranged in the circumferential direction. A pulley 9 is fixed to the front end of the rotating shaft 7 and is connected to a rotating shaft (not shown) of the engine via a belt (not shown) hung on the pulley 9.

  A front fan 16 is disposed at the front end of the rotor core 8 in the axial direction, and a suction hole 1a through which the cooling air 60 is sucked into the front bracket 1 near the front fan 16 and the cooling air 60 are discharged. A discharge hole 1b is provided. A rear fan 17 is also disposed at the rear end of the rotor core 8 in the axial direction, and a ventilation hole 2a through which the cooling air 61 is passed through the rear bracket 2 near the rear fan 17 and an exhaust hole through which the cooling air 61 is discharged. 2b is provided.

  A field core 11 is fixed by bolts (not shown) on the front side in the axial direction of the rear bracket 2, and a resin bobbin 12 around which a field winding 10 is wound is attached to the field core 11. It has been. Then, on the rear side in the axial direction of the rear bracket 2, a field circuit unit 20 for supplying a field current to the field winding 10 for generating a magnetomotive force, and a multiphase stator current for the stator winding 3B are provided. An inverter power circuit unit 30 to be energized and a control circuit unit 40 for controlling the field circuit unit 20 and the inverter power circuit unit 30 are mounted. A resin rear cover 45 that covers the inverter power circuit 30 and the control circuit unit 40 is disposed on the rear side in the axial direction of the inverter power circuit unit 30 and the control circuit unit 40. In the present specification and claims, with respect to the rotor 10, the side on which the pulley 9 is attached is the front side or the front side, and the side on which the field core 11 is attached is the rear side or the rear side. Call it.

  A magnetic pole position detection sensor 15 for detecting the magnetic pole positions of the claw-shaped magnetic poles 8A and 8B is disposed in the vicinity of the rear bearing 5 on the rear side of the rear bearing 5 in the axial direction. The magnetic pole position detection sensor 15 of this example includes a stator portion 15a and a rotor portion 15b. The stator portion 15a of the magnetic pole position detection sensor 15 is disposed on the rear side in the axial direction of the rear bearing 5, and is fixed to a cylindrical portion 2c that protrudes in a cylindrical shape from the bearing housing portion of the rear bracket 2 to the rear side. The rotor portion 15 b of the magnetic pole position detection sensor 15 is disposed at a substantially rear end portion 7 a of the rotating shaft 7, and a space A exists between the rear bearing 5 and the magnetic pole position detection sensor 15.

  In the present embodiment, the field core 11 to which the field winding 10 is attached is fixed to the rear bracket 2, and the winding end portion 10a of the field winding 10 does not go through a slip ring and a brush. It is connected to the terminal 26 of the field circuit section 20 through the terminal 13 inserted in the terminal mold 14. For this reason, only the space A exists between the magnetic pole position detection sensor 15 and the rear bearing 5, and there is no brush and slip ring. Therefore, there is no path through which the field current flows through the brush and slip ring.

  In a controller-integrated rotating electrical machine capable of driving and generating power, a large current flows through a battery harness, a stator, and the like during driving, and the battery voltage of the vehicle decreases. Therefore, in a controller-integrated rotating electrical machine capable of driving and generating power, the number of turns of the field winding is reduced, and the field current is increased by lowering the resistance of the field winding, thereby making the rotating electrical machine It is necessary to obtain the required magnetomotive force. For this reason, in order for the controller-integrated rotating electrical machine equipped with the brush and the slip ring to obtain the same power generation output as that of the conventional vehicle AC generator, the field current during power generation is There is a problem that it becomes larger than the AC generator, the temperature rise of the brush is large, the powder discharged from the brush is increased, and the brush life is shortened.

  However, in the controller-integrated rotating electrical machine capable of driving and generating electricity as in the present embodiment, by connecting the field circuit unit 20 and the field winding 10 without using a brush and a slip ring, The conventional brush discharge powder and the problem of brush life can be solved. In addition, since the field current is increased, the heat generation of the brush becomes a part of the temperature rise of the field circuit unit 20 due to heat transfer, but the heat generation of the brush is eliminated, so the temperature rise of the field circuit unit 20 is reduced. Reliability and durability can be improved.

  Further, since the brush and slip ring are not used in the controller-integrated rotating electric machine, the brush wear powder is applied to the magnetic pole position detection sensor 15, and the detection accuracy of the magnetic pole position detection sensor 15 is not deteriorated. The reliability of the sensor 15 can be improved.

  Further, since the brush and slip ring are not used in the controller-integrated rotating electric machine, the axial distance between the rear bearing 5 and the magnetic pole position sensor 15 can be reduced, and the magnetic pole position sensor 15 of the rotary shaft 7 is attached. The deterioration of the detection accuracy of the magnetic pole position sensor 15 due to the shake of the rear end portion 7a can be suppressed, and the detection accuracy of the magnetic pole position sensor 15 can be improved.

  Further, since a brush and slip ring are not used in the controller-integrated rotating electric machine, a path through which a field current flows is not formed between the rear bearing 5 and the magnetic pole position sensor 15, so that the magnetic pole position sensor generated by the field current is not formed. 15 can be reduced, and the detection accuracy of the magnetic pole position sensor 15 can be improved.

  FIG. 4 is a control circuit diagram of the controller-integrated dynamoelectric machine 100 of the present embodiment. In the figure, the controller-integrated rotating electrical machine 100 includes an armature winding 3B of a stator 3 and a field winding 10 of a field core 11, and the armature winding 3B of the stator 3 has three phases ( (U-phase, V-phase, W-phase) coils. In the inverter power circuit unit 30, two sets of switching elements (power transistors, MOSFETs, IGBTs, etc.) 31 and parallel diodes constituting the upper arm 31A and two switching elements 32 and parallel diodes constituting the lower arm 32B are connected in series. An inverter is configured by arranging one set in parallel and arranging three sets in parallel. A capacitor 102 is connected to the inverter in parallel. The end of each phase of the armature winding 3B is connected to an intermediate connection point between the switching element 31 of the upper arm 31A and the switching element 32 of the lower arm 32B connected in series via the AC wiring. Moreover, the positive electrode terminal and the negative electrode terminal of the battery 101 are connected to the positive electrode side and the negative electrode side of the inverter power circuit unit 30 through a series wiring.

  The field circuit unit 20 supplies a field current to the field winding 10 via the terminal 26, the terminal 13, and the winding end 10 a of the field winding 10 (see FIG. 1). The control circuit unit 40 controls the switching operation of the switching element 31 of the upper arm 31A and the switching element 32 of the lower arm 32B of the inverter power circuit unit 30 and controls the field circuit unit 20 to the field winding 10. Adjust the flowing field current.

  Next, based on FIG. 4, the outline of the control operation of the controller-integrated dynamoelectric machine 100 of the present embodiment will be briefly described. When the engine is started, DC power is supplied from the battery 101 to the inverter power circuit unit 30. The control circuit unit 40 performs ON / OFF control of the switching elements 31 and 32 of the inverter power circuit unit 30 to convert the DC power into three-phase AC power. Then, this three-phase AC power is supplied to the armature winding 3 </ b> B of the rotary electric machine 100. On the other hand, the field circuit unit 20 supplies a field current to the field winding 10 based on a command from the control circuit unit 40. Drive torque is generated by the linkage between the magnetic flux generated around the field winding 10 and the current flowing through the armature winding 3B of the stator 3. Due to this driving torque, the rotor 6 is rotationally driven and transmitted from the pulley 9 via a belt (not shown) to the crankshaft of the engine, and the engine is started.

  On the other hand, in the engine operating state, the rotational power of the engine is transmitted from the crankshaft to the pulley 9 via a belt (not shown). With this driving force, the rotor 6 fixed to the rotating shaft 7 rotates. Thereby, since the magnetic flux generated by the field winding 10 is linked to the armature winding 3B of the stator 3, a three-phase AC voltage is induced in the armature winding 3B. Then, the control circuit unit 40 performs ON / OFF control of the switching elements 31 and 32 of the inverter power circuit unit 30, converts the three-phase AC power induced in the armature winding 3B into DC power, Charge.

  Next, the arrangement relationship of the inverter power circuit unit 30, the field circuit unit 20, and the control circuit unit 40 disposed behind the rear bracket 2 will be described. The control circuit unit 40 is disposed so as to overlap with the field circuit unit 20 when viewed from the axial direction, and the inverter power circuit unit 30, the field circuit unit 20 and the control circuit unit 40 are rotated with respect to the axis direction. 7, the inverter power circuit unit 30 is disposed inside the substantially cylindrical outer diameter 2 d of the rear bracket 2.

  The rotating electric machine of the present embodiment is an example of a three-phase rotating electric machine, and the inverter power circuit unit 30 includes inverter power circuits 30U, 30V, and 30W that are independent of each other. Of the semiconductor switching elements for the inverter power circuit for supplying current to the armature winding 3B, the switching element 31 on the positive terminal side of the battery is an upper arm mounted on the heat sink 33 for cooling the inverter power circuit, The switching element 32 on the negative terminal side of the battery is configured as a lower arm mounted on the inverter power circuit cooling heat sink 34. The inverter power circuit unit 30 has a pair of upper arm and lower arm for each phase, and the surface on which the switching elements 31, 32 of the inverter power circuit cooling heat sinks 33, 34 are mounted is the upper arm. It is comprised so that it may oppose with a lower arm, and the inverter power circuits 30U, 30V, and 30W are comprised, respectively. A plurality of switching elements 31 and 32 for the inverter power circuit are mounted on each arm. The ventilation path between the fins 33a and 34a of the inverter power circuit cooling heat sinks 33 and 34 is arranged so as to be substantially in the same direction as the axial direction of the rotating shaft.

  Further, a resin rear cover 45 is configured to cover the rear side and the outer peripheral side of the inverter power circuit unit 30, the field circuit unit 20, and the control circuit unit 40. Air ventilation holes 50 and 51 are provided at the rear portions in the axial direction of the fins 33a and 34a so as to face the fins 33a and 34a of the heat sinks 33 and 34, respectively.

  In the field circuit section 20, a field circuit semiconductor switching element 21 for supplying a current to the field winding 10 is mounted on a field cooling heat sink 22, and a connector 23 for inputting / outputting signals from / to the outside. The resin case 24 and the cover 25 are included, and the control circuit unit 40 is also included in the resin case 24 and the cover 25. The ventilation path between the fins 22a of the field circuit cooling heat sink 22 is configured to be substantially parallel to the radial direction of the rotary shaft 7. The case 45 has the fin 22a of the field cooling heat sink 22 in the above-described case 45. Air vent holes 52 are provided on the radially outer side.

  Cooling air 60 from the front fan 16 attached to the front end of the rotor core 8 in the axial direction is sucked from a suction hole 1a formed in the front surface of the front bracket 1 to cool the stator winding 3B. It discharges from the discharge hole 1b formed in the side surface. On the other hand, the cooling air 61 by the rear fan 17 attached to the axial rear end of the rotor core 8 is sucked from the ventilation passages 50, 51, 52 formed in the case 45, and the inverter power circuit cooling heat sinks 33, 34. The inverter power circuit section 30 and the field circuit section 20 are cooled by passing between the fins 33a and 33b and between the fins 22a of the field circuit cooling heat sink 22, and through the ventilation holes 2a formed on the rear surface of the rear bracket 2. As a result, the stator winding 3B is cooled and discharged from the discharge hole 2b provided on the side surface of the rear bracket 2.

  As described above, the fans 16 and 17 are disposed at the axial front end and the axial rear end of the rotor core 8, and the field circuit unit 20 and the control circuit unit are installed in the space where the conventional brush and brush holder are mounted. By mounting 40, the axial dimension of the controller-integrated rotating electrical machine can be reduced without deteriorating the temperature rise of the stator winding 3B, the inverter power circuit unit 30, and the field circuit unit 20. In addition, the mountability to a vehicle or the like is improved.

  In the present embodiment, the magnet 18 is disposed between the claw-shaped magnetic poles 8A and 8B. In the configuration of the present embodiment, not only the gap between the stator 3 and the claw-shaped magnetic poles 8A and 8B but also the gap between the claw-shaped magnetic poles 8A and 8B and the field core 11 exists. In comparison, the output of drive and power generation is reduced, but by arranging the magnet 18 between the claw-shaped magnetic poles 8A and 8B, it is possible to suppress the decrease in output of drive and power generation.

Embodiment 2. FIG.
5 is a partial cross-sectional view showing the structure of a controller-integrated rotating electrical machine according to Embodiment 2 of the present invention, and FIGS. 6 and 7 are views of the controller-integrated rotating electrical machine of FIG. 5 as viewed from the rear side. 6 is a view showing a state in which the cover and the control circuit unit are removed, and FIG. 7 is a view showing a state in which the cover is removed.

  In the present embodiment, the semiconductor switching elements 31 and 32 of the inverter power circuit unit 30 and the semiconductor switching element 21 of the field circuit unit 20 are mounted on the same metal substrate 35. The metal substrate 35 is formed to be substantially coplanar in a direction substantially perpendicular to the axial direction of the rotating shaft, and is mounted with the inverter power circuit unit 30 and the field circuit unit 20.

  The inverter power circuit unit 30 includes inverter power circuits 30U, 30V, and 30W that are independent of each other. The inverter power circuits 30U, 30V, 30W and the field circuit unit 20 are arranged in a substantially annular shape so as to surround the rotating shaft 7, and the inverter power circuit unit 30 and the field circuit unit 20 are arranged on the rear bracket 2. It is arranged inside the substantially cylindrical outer diameter 2d. The substrate of the control circuit unit 40 is disposed on the rear side in the axial direction of the inverter power circuit unit 30 and the field circuit unit 20. The substrate of the control circuit unit 40 is disposed in a direction substantially perpendicular to the axial direction of the rotating shaft 7 and has a wide control element mounting area that covers the inverter power circuits 30U, 30V, 30W and the field circuit unit 20.

  A heat sink 36 for cooling the inverter power circuit unit 30 and the field circuit unit 20 is attached to the metal substrate 35 on the front side in the axial direction of the metal substrate 35. The inverter power circuit unit 30, the field circuit unit 20 and the control The circuit unit 40 is included in a resin case 70 and a metal cover 71 having the heat sink 36 and a connector 23 for inputting / outputting signals to / from the outside.

  The ventilation path formed between the fins 36 a of the heat sink 36 that cools the inverter power circuit unit 30 and the field circuit unit 20 is installed so as to be substantially in the same direction as the radial direction of the rotating shaft 7. The cooling air 61 by the rear fan 17 attached to the rear end portion of the rotor core 8 is sucked from the outside in the radial direction of the cooling heat sink 36 and passes between the fins 36a of the cooling heat sink 36, thereby causing the inverter power circuit portion 30 and The field circuit portion 20 is cooled, passes through the ventilation holes 2a formed on the rear surface of the rear bracket 2, cools the stator winding 3B, and is discharged from the discharge holes 2b provided on the side surface of the rear bracket 2. .

  As described above, according to the present embodiment, the inverter power circuit unit 30 and the field circuit unit 20 are mounted on the metal substrate 35 oriented substantially perpendicular to the axial direction of the rotating shaft 7 and the substrate of the control circuit unit 40. Is arranged on the rear side in the axial direction of the inverter power circuit section 30 and the field circuit section 20, so that the control element mounting area of the substrate of the control circuit section 40 can be increased, and even when the control circuit scale is large Thus, the control circuit unit 40 does not hinder the cooling performance of the inverter power circuit unit 30 and the field circuit unit 20, and the temperature rise of the inverter power circuit unit 30 and the field circuit unit 20 can be reduced. At the same time, the rotating electrical machine 100 can be downsized.

  Further, since the control circuit unit 40 can be configured to be separated from the stator winding 3B and the field winding 10 that generate a large amount of heat in the rotating electrical machine 100, the control circuit unit 40 is controlled from the stator winding 3B and the field winding 10. The influence of heat transfer to the circuit unit 40 is reduced, and the temperature rise of the control circuit unit 40 can be suppressed, and the reliability and durability are improved.

Embodiment 3 FIG.
8 is a partial cross-sectional view showing the structure of a controller-integrated rotating electrical machine according to Embodiment 3 of the present invention, and FIGS. 9 and 10 are views of the controller-integrated rotating electrical machine of FIG. 8 as viewed from the rear side. 9 is a view showing a state where the cover is removed, and FIG. 10 is a view showing a state where the cover is attached.

  In the present embodiment, the inverter power circuit unit 30 includes inverter power circuits 30U, 30V, and 30W for each phase. The inverter power circuits 30U, 30V, 30W are arranged in a substantially annular shape so as to surround the rotating shaft 7, and the inverter power circuit unit 30 is arranged inside the substantially cylindrical outer diameter 2d of the rear bracket 2. ing.

  As in the first embodiment, the inverter power circuit semiconductor switching elements 31 and 32 are mounted on the inverter power circuit cooling heat sinks 33 and 34, and between the fins 33a and 33b of the inverter power circuit cooling heat sinks 33 and 34. The ventilation path is arrange | positioned so that it may become substantially the same direction as the axial direction of a rotating shaft.

  A resin case 80 is configured to cover the outer peripheral side and the rear side of the inverter power circuit unit 30. The resin case 80 has air vent holes 50, 51 on the rear side in the axial direction of the fins 33a, 34a of the heat sinks 33, 34 for cooling the inverter power circuit so as to face the fins 33a, 34a of the heat sinks 33, 34. Is provided.

  The field circuit unit 20 is disposed on the radially outer side of the inverter power circuit unit 30, and the control circuit unit 40 is disposed on the radially outer side of the field circuit unit 20. The field circuit unit 20 and the control circuit unit 40 are enclosed in the resin case 80 having a connector 23 for inputting / outputting signals from / to the outside and a metal cover 81.

  As described above, according to the present embodiment, the inverter power circuit unit 30 is arranged in a substantially annular shape so as to surround the rotating shaft 7, and the field circuit 20 and the control circuit unit 40 are arranged in the radial direction of the inverter power circuit unit 30. Since it arrange | positions on the outer side, the area which mounts the switching elements 31 and 32 of the inverter power circuit part 30 can be enlarged, and it becomes possible to increase the number of switching elements and to lengthen the distance between switching elements. Further, the area of the heat sinks 33 and 34 for cooling the inverter power circuit can be increased, the temperature rise of the inverter power circuit unit 30 can be reduced, and the reliability and durability are improved.

  Further, since the field circuit 20 and the control circuit unit 40 are arranged on the radially outer side of the inverter power circuit unit 30, the field circuit unit 20 and the control circuit unit 40 impede the cooling performance of the inverter power circuit unit 30. Therefore, the temperature rise of the inverter power circuit unit 30 can be reduced. Furthermore, the axial length of the rotating electrical machine 100 can be shortened, so that the size can be reduced and the mountability of the vehicle is improved.

It is sectional drawing which shows the structure of the control apparatus integrated rotary electric machine by Embodiment 1 of this invention. It is the figure which looked at the control apparatus integrated rotating electrical machine by Embodiment 1 of this invention from the rear side. It is the figure which looked at the control apparatus integrated rotating electrical machine by Embodiment 1 of this invention from the rear side. FIG. 3 is a control circuit diagram of the controller-integrated dynamoelectric machine according to Embodiment 1 of the present invention. It is a partial cross section figure which shows the structure of the rotary electric machine with an integrated control apparatus by Embodiment 2 of this invention. It is the figure which looked at the control apparatus integrated rotary electric machine by Embodiment 2 of this invention from the rear side. It is the figure which looked at the control apparatus integrated rotary electric machine by Embodiment 2 of this invention from the rear side. It is a partial cross section figure which shows the structure of the control apparatus integrated rotary electric machine by Embodiment 3 of this invention. It is the figure which looked at the control apparatus integrated rotary electric machine by Embodiment 3 of this invention from the rear side. It is the figure which looked at the control apparatus integrated rotary electric machine by Embodiment 3 of this invention from the rear side.

Explanation of symbols

1 Front bracket, 2 Rear bracket, 3 Stator,
4 Front bearing, 5 Rear bearing, 6 Rotor, 7 Rotating shaft,
8 rotor core, 8A, 8B claw-shaped magnetic pole, 10 field winding, 11 field core,
12 bobbins, 15 magnetic pole position detection sensors, 16, 17 fans, 20 field circuit sections,
40 Control circuit unit, 100 Controller-integrated rotating electrical machine.

Claims (13)

A stator supported by a housing and wound with a stator winding;
A rotating shaft rotatably supported by the housing;
A rotor core fixed to the rotating shaft, and a rotor having a pair of claw-shaped magnetic poles formed on an outer peripheral portion of the rotor core and arranged to face the stator via a gap;
A field core fixed to the rear side housing, arranged with a gap with respect to the rotor core and the claw-shaped magnetic pole, and having a field winding mounted thereon;
A field circuit unit installed behind the rear housing in the axial direction and supplying a field current to the field winding;
An inverter power circuit unit installed behind the rear housing in the axial direction and supplying a multiphase stator current to the stator winding;
A controller-integrated dynamoelectric machine comprising a control circuit unit that is installed on the rear side in the axial direction of the rear housing and controls the field circuit unit and the inverter power circuit unit. The rotating shaft is rotatably supported by the housing via a front bearing and a rear bearing, and a magnetic pole position detection sensor for detecting the magnetic pole position of the claw-shaped magnetic pole is provided at the rear of the rotating shaft in the axial direction of the rear bearing. The control apparatus-integrated dynamoelectric machine according to claim 1, wherein the control apparatus-integrated dynamoelectric machine is installed at a position. The controller-integrated rotating electrical machine according to claim 1, wherein a magnet is provided between the pair of claw-shaped magnetic poles. A front fan is provided at a front end portion of the rotor core, and a ventilation hole for sucking cooling air and a discharge hole for discharging cooling air are provided at a position corresponding to the front fan of the front housing. The control apparatus-integrated dynamoelectric machine according to any one of claims 1 to 3. A rear fan is provided at a rear end portion of the rotor core, and a ventilation hole for sucking cooling air and a discharge hole for discharging cooling air are provided at a position corresponding to the rear fan of the rear housing. The control device-integrated dynamoelectric machine according to any one of claims 1 to 4. 2. The inverter power circuit portion and the field circuit portion, which are installed on the rear side in the axial direction of the rear housing, are arranged in a substantially annular shape so as to surround the rotating shaft. The control device-integrated dynamoelectric machine according to any one of items 5 to 6. The control circuit unit is disposed so as to overlap the field circuit unit on the rear side in the axial direction of the rotating shaft, and the inverter power circuit unit, the field circuit unit, and the control circuit unit are configured to be the rotating shaft. The control apparatus-integrated dynamoelectric machine according to claim 6, wherein the controller-integrated dynamoelectric machine is arranged in a substantially annular shape so as to surround the control unit. A rear fan is provided at the rear end portion of the rotor core, and a ventilation hole for sucking cooling air is provided at a position corresponding to the rear fan of the rear housing, and the fins of the cooling heat sink of the field circuit portion are 2. The cooling device according to claim 1, wherein the cooling air is extended in a radial direction of the rotary shaft so that cooling air flows in from the radially outer side of the rotary shaft of the fin and is sucked into the ventilation hole of the rear housing. The control device-integrated dynamoelectric machine according to any one of items 7 to 9. A rear fan is provided at the rear end portion of the rotor core, and a ventilation hole for sucking cooling air is provided at a position corresponding to the rear fan of the rear housing, and a fin of the cooling heat sink of the inverter power circuit portion 2. The cooling device according to claim 1, wherein the cooling air is extended in the axial direction of the rotary shaft so that the cooling air flows in from the axial rear side of the rotary shaft of the fin and is sucked into the ventilation hole of the rear housing. The control device-integrated dynamoelectric machine according to any one of items 8 to 9. The inverter power circuit unit and the field circuit unit are disposed on a substantially coplanar substrate perpendicular to the axial direction of the rotation shaft, and the control circuit unit includes the inverter power circuit unit and the field circuit unit. The control apparatus-integrated dynamoelectric machine according to any one of claims 1 to 5, wherein the controller-integrated dynamoelectric machine is disposed rearward in the axial direction of the rotation shaft of the substrate. A rear fan is provided at a rear end portion of the rotor core, and a ventilation hole for sucking cooling air is provided at a position corresponding to the rear fan of the rear housing, and cooling of the inverter power circuit unit and the field circuit unit is performed. The fin of the heat sink is extended in the radial direction of the rotary shaft, and cooling air flows from the radial outer side of the rotary shaft of the fin and is sucked into the ventilation hole of the rear housing. The control device-integrated dynamoelectric machine according to claim 10. The inverter power circuit unit is arranged in a substantially annular shape so as to surround the rotating shaft, and the field circuit and the control circuit unit are arranged radially outside the inverter power circuit unit. The control device-integrated dynamoelectric machine according to any one of claims 1 to 5. A rear fan is provided at the rear end portion of the rotor core, and a ventilation hole for sucking cooling air is provided at a position corresponding to the rear fan of the rear housing, and a fin of the cooling heat sink of the inverter power circuit portion 13. The cooling device according to claim 12, wherein the cooling air is extended in an axial direction of the rotary shaft, and cooling air flows in from the axial rear side of the rotary shaft of the fin and is sucked into the ventilation hole of the rear housing. Control device-integrated rotary electric machine.

Images