Source: https://patents.google.com/patent/JP2006211835A/en
Timestamp: 2020-08-05 03:13:08
Document Index: 234151890

Matched Legal Cases: ['art 60', 'art 70', 'art 80', 'art 70', 'art 80', 'art 60', 'art 60', 'art 70', 'art 80', 'art, 58', 'art, 59']

JP2006211835A - Rotating electric machine - Google Patents
JP2006211835A
JP2006211835A JP2005021433A JP2005021433A JP2006211835A JP 2006211835 A JP2006211835 A JP 2006211835A JP 2005021433 A JP2005021433 A JP 2005021433A JP 2005021433 A JP2005021433 A JP 2005021433A JP 2006211835 A JP2006211835 A JP 2006211835A
JP2005021433A
JP4583191B2 (en
2005-01-28 Application filed by Mitsubishi Electric Corp, 三菱電機株式会社 filed Critical Mitsubishi Electric Corp
2005-01-28 Priority to JP2005021433A priority Critical patent/JP4583191B2/en
2006-08-10 Publication of JP2006211835A publication Critical patent/JP2006211835A/en
2010-11-17 Publication of JP4583191B2 publication Critical patent/JP4583191B2/en
239000000615 nonconductor Substances 0.000 claims abstract description 18
An object is to improve the cooling performance of the control device, reduce the size of the entire device, and eliminate the loss of voltage drop due to the wiring between the control device and the rotating electrical machine.
A switching power module that includes at least a pair of switching elements that constitute an upper arm and a lower arm and performs switching control of the rotating electrical machine, and each drain terminal includes an insulator in each switching element that exists in each arm of the switching module. Connected to separate heat sinks without going through, and these separate heat sinks integrated with each other via an insulator.
The present invention relates to a rotating electrical machine equipped with a power element unit that performs inverter control and the like, and more particularly to an inverter-integrated rotating electrical machine for a vehicle that is used in a motor generator, a power steering motor, and the like.
Conventionally, a power element unit that performs inverter control of a rotating electrical machine is generally installed separately from the rotating electrical machine. For this reason, the length of the AC wiring that electrically connects the power element unit and the rotating electrical machine becomes longer, and the voltage drop increases due to the wiring resistance, so that the torque and speed of the rotating electrical machine decrease. there were. In particular, in a rotating electrical machine for a vehicle that uses a low voltage of 12V or 36V as a power source, the influence of the voltage drop is large. Further, although a measure of thickening the wiring in order to suppress the voltage drop can be considered, there is a problem that the weight of the wiring increases and the cost increases.
Even if the rotating element is not a low-voltage power rotating machine, if the power element unit and the rotating electric machine are placed apart from each other, it is necessary to connect them with long wires, which not only restricts the layout of the product but also the wiring. The parts cost and installation cost increase.
In view of this, for example, as in Patent Document 1, it has been considered that the control device can be integrally attached to the rotating electrical machine for the vehicle. By integrally attaching the control device to the rear bracket, the harnesses to be connected can be shortened, the voltage drop can be suppressed and the torque characteristics and rotational speed characteristics of the rotating electrical machine can be improved, and the weight and cost can be increased. Can be avoided.
However, as shown in Patent Document 1 and the like, when disposing the control device in the vicinity of the rotating electrical machine, it is necessary to ensure the heat dissipation of the power element, but since the rotating electrical machine itself generates heat, the surrounding temperature environment is severe. In addition, there is a problem that the temperature rises further by destroying the power element and the control element by arranging the control circuit including the power element as the heating element in the vicinity of the rotating electrical machine. Furthermore, since the power element unit is additionally installed in the space of the rotating electrical machine, there is a problem that the entire apparatus is increased in size.
FIG. 13 is a schematic circuit diagram for explaining the operation of the rotating electrical machine including the power element unit. In the figure, the rotating electrical machine 1 includes an armature winding 16a wound around a stator and a field winding 14 wound around the rotor, and the armature winding 16a has three phases (U phase). , V-phase and W-phase coils are Y-connected (star-connected). The power element unit 4 includes a switching element (power transistor, MOSFET, IGBT, etc.) 41, which is a plurality of power elements, and an inverter module 40 including a diode 42 connected in parallel to each switching element 41, and in parallel with the inverter module 40. And a capacitor 43 connected to the. The inverter module 40 includes two sets of switching elements 41a and diodes 42 constituting the upper arm 46 and two switching elements 41b and diodes 42 constituting the lower arm 47 connected in series. They are arranged in parallel.
The ends of each phase of the Y connection of the armature winding 16a are electrically connected to the intermediate points of the switching element 41a of the upper arm 46 and the switching element 41b of the lower arm 47 arranged in series via the AC wiring 9, respectively. It is connected. Further, the positive electrode side terminal and the negative electrode side terminal of the battery 5 are electrically connected to the positive electrode side and the negative electrode side of the inverter module 40 via the series wiring 8, respectively. In the inverter module 40, the switching operations of the respective switching elements 41 a and 41 b are controlled by commands from the control circuit 44. Further, the control circuit 44 controls the field current control circuit 45 to adjust the field current that flows through the field winding 14 of the rotor.
In the rotating electrical machine 1 including the power element unit 4 as described above, DC power is supplied from the battery 5 to the power element unit 4 via the DC wiring 8 when the engine is started. Then, the control circuit 44 performs ON / OFF control of the switching elements 41a and 41b of the inverter module 40, and the DC power is converted into three-phase AC power. Then, this three-phase AC power is supplied to the armature winding 16 a of the rotating electrical machine 1 through the AC wiring 9. As a result, a rotating magnetic field is applied around the field winding 14 of the rotor to which the field current is supplied by the field current control circuit 45, the rotor is driven to rotate, and the pulley, belt, crank for the rotating electrical machine The engine is started via a pulley and a clutch (ON).
On the other hand, when the engine is started, the rotational power of the engine is transmitted to the rotating electrical machine 1 via the crank pulley, the belt, and the rotating electrical machine pulley. Thereby, the rotor is driven to rotate, and a three-phase AC voltage is induced in the armature winding 16a. Therefore, the control circuit 44 performs ON / OFF control of each switching element 41, converts the three-phase AC power induced in the armature winding 16a into DC power, and charges the battery 5.
Next, FIG. 14 shows a configuration example of a conventional power module used in the power element unit 4. The power element 41 a constituting the upper arm 46 and the power element 41 b constituting the lower arm 47 are connected to the metal substrate 20 and further connected to the heat sink 22 via the heat radiation grease 21. Since the connecting portions of the two power elements 41 a and 41 b are connected to the AC wiring 9 and have different potentials, they are insulated on the insulating substrate 23. The heat of the power elements 41a and 41b is transferred to the heat sink 22 via the insulating substrate 23 and radiated to the air. An electric heat path of the power element is a chip 24 as a heating element, a heat spreader 25 as a connection body with the outside, and a solder 26 for connecting them, and their thermal conductivities are 0.0254 W / m · K, 0.0293 W / m · K, 0.0165 W / m · K.
On the other hand, the thermal conductivity of the insulating substrate 23 is 0.07 to 0.09 W / m · K, and the heat dissipation is greatly impaired when the insulator is interposed in the heat transfer path.
As described above, it is necessary to ensure the heat dissipation of the power element when arranging the inverter in the vicinity of the rotating electrical machine. However, since the rotating electrical machine itself generates heat, the surrounding temperature environment is severe, and the power element that is a heating element is installed. There is a problem that the temperature rises further by disposing the control device including the rotary electric machine in the vicinity of the rotating electrical machine, and the power element and the control element are destroyed.
JP 2003-225000 A (Claim 5, paragraph number [0039], FIG. 4 etc.)
The present invention has been made to solve the above-described problems, and improves the cooling performance of the control device, reduces the size of the entire device, and reduces the voltage drop due to the wiring between the control device and the rotating electrical machine. The purpose is to eliminate loss.
A rotating electrical machine according to the present invention includes a rotating electrical machine portion including a rotor having a rotating shaft, a stator disposed so as to surround the rotor and having armature windings, and the rotating electrical machine portion. A switching circuit unit that includes a pair of switching elements that constitute at least an upper arm and a lower arm and performs switching control of the rotating electrical machine unit,
The switching element of each arm of the switching circuit section has its drain terminal connected to a separate heat sink without an insulator, and the separate heat sinks are integrated with each other via an insulator. It is.
According to the rotating electrical machine according to the present invention, since an insulating layer between the switching element as a power element and the heat sink is not necessary, the thermal conductivity can be improved. As a result, the heat dissipation amount of the switching element is improved, and the cooling performance of the power element unit is improved. Further, since the heat sink can be used as the wiring, the number of wiring parts can be reduced, and the wiring board itself can be reduced in size, so that the entire apparatus can be reduced in size.
FIG. 1 is a cross-sectional view showing the structure of a rotating electrical machine according to Embodiment 1 of the present invention, in which a power element unit is disposed integrally or in proximity to the rotating electrical machine.
In FIG. 1, a rotating electrical machine 1 is fixed to a case made up of a front bracket 10 and a rear bracket 11, a shaft 13 rotatably disposed in the case via a support bearing 12, and the shaft 13. And a rotor 15 having a field winding 14, a stator 16 fixed to the case so as to surround the rotor 15 and having an armature winding 16 a, and the axial direction of the rotor 15. A fan 17 fixed to both end faces, a pulley 18 fixed to an end on the front side of the shaft 13, a brush holder 19 attached to the rear bracket 11 so as to be positioned on the rear side outer periphery of the shaft 13, and a shaft A pair of brushes 20 disposed in the brush holder 19 so as to be in sliding contact with a pair of slip rings 21 mounted on the rear side of the shaft 13; 13 rotational position detecting sensor disposed at a rear end of and a (resolver) 22. And this rotary electric machine 1 is connected with the rotating shaft (not shown) of the engine via the pulley 18 and the belt (not shown).
In the present embodiment, the power element unit 4 is installed integrally or close to the rotating electrical machine 1. That is, in the space between the cover 30 and the rear bracket 11 disposed on the rear side of the rear bracket 11, a plurality of power elements (switching elements) 41 a and 41 b constituting the power element unit 4 and each power element 41 are provided. The connected inner heat sink 50 and outer heat sink 51 are installed on the outer surface of the rear bracket 11 via a support (not shown). A control circuit board 44 a on which the above-described control circuit 44 is mounted is disposed outside the cover 30.
Further, the cover 30 and the rear bracket 11 are provided with ventilation holes 31a and 31b, and the fan 17 of the rotor 15 rotates to form an air path as shown by the arrow F in the figure, passing through the inside of the cover 30, and the power element 41, the inner heat sink 50, the outer heat sink 51, the control circuit 44, and the like are cooled. FIG. 2 shows a view of the power element unit 4 as viewed from above. The power circuit section is divided into U, V, and W three-phase parts (U-phase part 60, V-phase part 70, and W-phase part 80), and an inner heat sink 50 and an outer heat sink 51 are mounted as a pair of heat sinks, respectively. Four power elements 41a (shown in white) in the upper arm are connected in parallel to the inner heat sink 50, and four power elements 41b (indicated by hatching in the figure) in the lower arm are connected in parallel to the outer heat sink 51. Four are connected to each other. The power element 41 may be any of a discrete type, a TPM type, and a bare chip type.
Thus, by connecting a plurality of switching elements 41 in parallel, the current-carrying capacity per one switching element can be reduced, and it can be configured at low cost. Further, an insulator 58 such as a synthetic resin is interposed between the inner power element 41a and the heat sink 50 and the outer power element 41b and the heat sink 51 to insulate each other. Since the two heat sinks 50 and 51 are fixed via the insulator 58, even if a potential difference occurs between the upper and lower heat sinks, the distance between the heat sinks can be shortened by using the insulator and the size can be reduced. .
Reference numeral 52 denotes a fixing portion for fastening the U-phase and V-phase outer heat sinks 51 together, 53 denotes a fixing portion for fastening the V-phase and W-phase outer heat sinks 51 together, and 54 denotes the U-phase outer heat sink 51. A fixing portion that fastens the U-phase inner heat sink 50 together, 55 is a fixing portion that fastens the W-phase outer heat sink 51 and the W-phase inner heat sink 50 together, and 56 is the V-phase inner heat sink 50 and V. A fixing portion 57 for fastening the inner heat sink 50 for the phase together, and a fixing portion 57 for fastening the inner heat sink 50 for the V phase and the inner heat sink 50 for the W phase together.
Next, details of the layout of the power elements 41a and 41b, the inner heat sink 50, the outer heat sink 51, and the main circuit wiring structure will be described with reference to an exploded view of the control main circuit portion of the rotating electrical machine shown in FIG. The operation will be described below with reference to a schematic circuit diagram for explaining the operation of the rotating electrical machine shown in FIG. First, in the power element 41a configuring the upper arm 46, four MOSFETs are joined to the inner heat sink 50 with a base plate 25 serving as drain terminals thereof by soldering or the like. On the other hand, the power element 41b constituting the lower arm 47 is also not shown, but the base plate, which is also the drain terminal of four MOSFETs, is joined to the outer heat sink 51 by soldering or the like. As a result, each heat sink has the same potential as the drain terminal to which it is joined.
On the other hand, four source terminals S of the power element 41a are taken out in common by the wiring board 61, and one end of the source terminal S is commonly connected to the outer heat sink 51 of the lower arm 46, that is, the drain terminal of the power element 41b via the crossover wiring layer 61a. At the same time, the U-phase lead wire of the armature winding 16 a of the stator 16 is connected via the AC wiring 9. Further, the four source terminals S of the power element 41b are taken out in common by the wiring board 62, and one end thereof is extended to the joint fastening portion 52 of the outer heat sink 51 through the extension wiring layer 62a. It is fastened together with the U-phase heat sink 51 together with the transition wiring layer 61a of the plate 61, and is itself grounded through a grounding part (such as a bracket). A wiring board can be reduced in size by connecting the wiring board of each layer with a nearby ground part.
In the conventional apparatus shown in FIG. 14, wiring is required for the electrical connection between the power elements (switching elements) 41a and 41b of the upper arm 46 and the lower arm 47. However, according to this embodiment, the heat sink 50 and 51 also serve as wiring. For example, although the U-phase upper arm 46 has four switching elements 41a mounted thereon, the four switching elements 41a are connected to the heat sinks instead of using wiring such as copper wires to connect the four drain terminals in parallel. By connecting directly to 50, a parallel electrical connection is established. The parallel connection of the drain terminal of the power element (switching element) 41b of the lower arm 47 is the same. The same applies to V-phase and W-phase power elements (switching elements). That is, since the heat sinks 50 and 51 also serve as wiring, wiring such as copper wires can be reduced, and the size of the power element unit itself can be reduced.
Further, one co-clamping fixing portion 54 of the inner heat sink 50 is connected to the positive terminal of the battery 5, and the other co-clamping fixing portion 56 is fixed together with a wiring board 64 having a shape as shown in the figure. A connection portion to a capacitor 43 to be described later is formed as D. The layout of the power element units of the V-phase part 70 and the W-phase part 80 is also configured in the same manner as the U-phase part 60. Since the inner heat sinks 50 of the three parts (the U phase, the V phase, and the W phase part) are at the same potential (the positive side potential of the battery 5), without providing a terminal connected to the battery 5 on each inner heat sink 50, By forming the drain terminal D also on a part of the inner heat sink 50, the inner heat sinks 50 are electrically connected to each other, thereby reducing the number of battery connection terminals. It should be noted that four gate terminals 65 of the power element 41a and four gate terminals 66 of the power element 41b are also taken out in common, and led out to the control circuit board 44a provided outside the external cover 30 shown in FIG.
Next, installation of the capacitor 43 will be described. The capacitor 43 has a rectangular parallelepiped shape as shown in the figure, and is arranged so that its longitudinal surface is along the back surface of the heat sink structure from the space factor surface. Further, P and N terminals are led out from the one end face. Capacitor mounting portion having a surface parallel to the cooling fins of the outer heat sink 51 in a portion of the extended wiring layer 62a of the source side wiring board 62 of the power element 41b and in front of the joint fastening portion 52 of the outer heat sink 51. E, and a part of the wiring board 64 led out from the co-clamping fixing portion 56 of the inner heat sink 50 also has a capacitor mounting portion G having a surface parallel to the cooling fins of the inner heat sink 50, and the capacitor The attachment portion E is soldered to the N terminal of the capacitor, and the capacitor attachment portion G is soldered to the P terminal of the capacitor.
As described above, the smoothing capacitor 43 is disposed between the wiring board 64 connected to the inner heat sink having a positive potential and the wiring board 62 connected to the negative potential of each phase, thereby attaching the capacitor. The space factor between the capacitor and the power circuit is shortened, and the area (loop diameter) of the current path that can flow from the capacitor through both the power elements 41a and 41b is reduced and passes through the current path. The amount of the external magnetic field from the armature winding 16a to be reduced can be reduced, and a rotating electrical machine with good noise resistance can be obtained.
The smoothing capacitor 43 is provided for each phase, so that the noise resistance can be improved over all phases.
FIG. 4 shows a cross-sectional view taken along line IV-IV in FIG. As is apparent from the drawing, the power element 41a of the upper arm is directly soldered to the inner heat sink 50 via the heat spreader 25. Similarly, the power element of the lower arm is connected to the outer heat sink 51. 41b is connected to the drain side by soldering and sealed with an insulator 58 to be integrated. That is, according to the power module configuration in the present embodiment, separate heat sinks (inner heat sink 50, outer heat sink 51) are directly connected to the power elements (switching elements) 41a and 41b of the upper arm 46 and the lower arm 47, respectively. Since the separate heat sinks (the inner heat sink 50 and the outer heat sink 51) are insulated and integrated via an insulator, the power element (switching element) 41 and the heat sinks 50 and 51 are insulated with a large thermal resistance. There is no need to pass through an object, and heat dissipation can be improved.
FIG. 5 is a cross-sectional view showing the structure of a rotating electrical machine according to Embodiment 2 of the present invention, and FIG. 6 is a view of the power element unit 4 as viewed from above. In addition, the same code | symbol is attached | subjected and shown to FIG.1 and FIG.2 demonstrated in Embodiment 1 in the figure, or an equivalent part. The difference from the first embodiment is that the cover 30 and the rear bracket 11 are not provided with the ventilation holes 31a and 31b in the axial direction, but are provided with the ventilation holes 31a and 31b in the direction perpendicular to the axial direction. The upper heat sink 50 and the lower heat sink 51 are provided with the insulating plate 59 interposed therebetween so that the power elements 41a and 41b are arranged on F.
According to the second embodiment, by arranging the upper heat sink 50 and the lower heat sink 51 so as to overlap with each other via the plate-like insulator 59, the distance between the heat sinks can be shortened and the size can be reduced. Since the space of the power element can be used as an air path, it contributes to improvement of cooling performance. Further, since the power elements 41a and 41b mounted on the heat sinks 50 and 51 are arranged in parallel in the radial direction of the rotor 15, the surface to which the power elements 41a and 41b are connected is efficiently cooled. There is.
7 is a cross-sectional view showing the structure of a rotating electrical machine according to Embodiment 3 of the present invention, and FIG. 8 is a view of the power element unit portion 4 as viewed from above. Only the differences from the second embodiment will be described. The upper heat sink 50 and the lower heat sink 51 are arranged in the same row in the radial direction and fixed to the heat sink mounting portion 68, and are insulated and integrated with an insulator 69. Is.
According to this embodiment, since the upper heat sink 50 and the lower heat sink 51 are arranged in the same row in the radial direction, the surface of the heat sink 50, 51 having the larger area of the radiation fin is linear along the air path F. It is convenient to realize a rotating electrical machine having a small axial dimension by securing an air volume for cooling by one air passage.
FIG. 9 is a cross-sectional view showing the structure of a rotating electrical machine according to Embodiment 4 of the present invention, and FIG. 10 is a view of the power element unit 4 as seen from above. Each heat sink according to the fourth embodiment is disposed adjacent to an L shape that bends in the axial direction and the radial direction of the rotating shaft. An insulator 69 is interposed between the upper heat sink 50 and the lower heat sink 51 and is attached to the rear bracket 11 together with the attachment portion 68. Generally, the cooling air flow of the rotating electrical machine is sucked from the axial direction and discharged in the outer diameter direction by centrifugal force. According to the L-type heat sink, since the heat sink can be arranged along the suction and discharge directions, the pressure loss of the passage can be reduced, the power element can be efficiently cooled, and the size can be further reduced.
FIG. 11 is a cross-sectional view showing a configuration example of a power module according to Embodiment 5 of the present invention, and FIG. 12 is a top view of a state where the power module is incorporated in a rotating electrical machine.
The heat sinks according to the fifth embodiment are arranged adjacent to each other independently of each other, and chips 24 and 24 that are directly solder-connected to the heat spreaders 25 and 25 are integrally formed with an insulator 58 in advance. The power module is configured by solder connection. Thus, it can be handled as a TPM (Transfer Power Module) structure in which the MOS chips of the upper and lower arms are integrally packaged, and the manufacturing and assembling process can be simplified.
In the above-described embodiment, the rotary electric machine 1 in which the field winding 14 and the brush holder 19 are disposed on the rotor 15 has been described. However, the rotary electric machine 1 that does not include the field winding 14 and the brush holder 19 is used. It is also possible to apply. In addition, the inner heat sink 50 is shown to be composed of three parts, ie, a U-phase part 60, a V-phase part 70, and a W-phase part 80. By mounting the power element (switching element) 41 of each upper arm 46 of the phase on the same heat sink, the wiring assembly can be further rationalized.
It is sectional drawing which shows the structure of the rotary electric machine by Embodiment 1 of this invention. It is the figure which looked at the power element unit part of the rotary electric machine shown in FIG. 1 from the upper surface. It is an assembly exploded view of the main circuit part for control of the rotary electric machine shown in FIG. It is the IV-IV sectional view taken on the line of FIG. It is sectional drawing which shows the structure of the rotary electric machine by Embodiment 2 of this invention. It is the figure which looked at the power element unit part of the rotary electric machine shown in FIG. 5 from the upper surface. It is sectional drawing which shows the structure of the rotary electric machine by Embodiment 3 of this invention. It is the figure which looked at the power element unit part of the rotary electric machine shown in FIG. 7 from the upper surface. It is sectional drawing which shows the structure of the rotary electric machine by Embodiment 4 of this invention. It is the figure which looked at the power element unit part of the rotary electric machine shown in FIG. 7 from the upper surface. It is sectional drawing which shows the structural example of the power module by Embodiment 5 of this invention. It is the figure which looked at the state which assembled the power module of FIG. 11 in the rotary electric machine from the upper surface. It is a schematic circuit diagram for demonstrating operation | movement of the rotary electric machine provided with the power element unit. It is sectional drawing which shows the structural example of the conventional power module.
1 rotating electrical machine, 4 power circuit unit, 5 battery, 13 rotating shaft,
14 field windings, 15 rotors, 16 stators, 16a armature windings,
17 Fan, 30 External cover, 31, 31a, 31b Ventilation hole,
40 inverter module, 41, 41a, 41b switching element (power element),
43 smoothing capacitor, 44 control circuit, 46 upper arm, 47 lower arm,
50 inner heat sink, 51 outer heat sink,
52, 53, 54, 55, 56, 57 Fastening fixing part, 58 Insulating part, 59 Insulating plate,
60 U phase site, 70 V phase site, 80 W phase site.
A rotating electrical machine part including a rotor having a rotating shaft, a stator disposed so as to surround the rotor and having an armature winding, and provided near the rotating electrical machine part, and at least an upper arm And a switching circuit unit that includes a pair of switching elements constituting the lower arm and performs switching control of the rotating electrical machine unit,
The switching element of each arm of the switching circuit unit has a drain terminal connected to a separate heat sink without an insulator, and the separate heat sink is integrated with each other through an insulator. Electric.
2. The rotating electrical machine according to claim 1, wherein the heat sinks are disposed adjacent to each other in a radial direction of the rotating shaft, and a cooling surface of each heat sink is disposed in parallel with the axial air path.
2. The rotating electrical machine according to claim 1, wherein each of the heat sinks is disposed adjacent to each other in the rotation axis direction through an insulator, and a cooling surface of each heat sink is disposed in parallel with the radial air path. .
2. The rotating electrical machine according to claim 1, wherein the heat sinks are arranged adjacent to each other in the radial direction of the rotating shaft, and the cooling surfaces of the heat sinks are arranged in series in parallel with the radial air path.
Each of the heat sinks is arranged in an L shape adjacent to the axial direction and the radial direction of the rotating shaft, and the cooling surface of each heat sink is arranged in parallel along an air path bent in the radial direction from the axial direction. The rotating electrical machine according to claim 1.
The rotating electrical machine according to claim 1, wherein the switching element of the upper arm and the switching element of the lower arm are integrally packaged with an insulator.
The rotating electrical machine according to claim 1, wherein a plurality of switching elements connected to each of the heat sinks are directly connected to the same heat sink to form a plurality of parallel bodies.
The rotating electrical machine according to claim 1, wherein the smoothing capacitor is disposed between a wiring board connected to a heat sink having a positive electrode potential and a wiring board connecting a negative electrode potential of each phase.
9. The rotating electrical machine according to claim 8, wherein the smoothing capacitor is provided for each phase.
JP2005021433A 2005-01-28 2005-01-28 Rotating electric machine Active JP4583191B2 (en)
JP2005021433A JP4583191B2 (en) 2005-01-28 2005-01-28 Rotating electric machine
CN2006800006181A CN101006633B (en) 2005-01-28 2006-01-26 Rotating electric machine
EP06712409.9A EP1843453B1 (en) 2005-01-28 2006-01-26 Rotary electric machine
US11/659,712 US7638910B2 (en) 2005-01-28 2006-01-26 Electric rotating machine
PCT/JP2006/301227 WO2006080397A1 (en) 2005-01-28 2006-01-26 Rotary electric machine
JP2006211835A true JP2006211835A (en) 2006-08-10
JP4583191B2 JP4583191B2 (en) 2010-11-17
ID=36740423
JP2005021433A Active JP4583191B2 (en) 2005-01-28 2005-01-28 Rotating electric machine
US (1) US7638910B2 (en)
EP (1) EP1843453B1 (en)
JP (1) JP4583191B2 (en)
CN (1) CN101006633B (en)
WO (1) WO2006080397A1 (en)
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