WO2021048086A1 - Hairpin-wicklung eines stators einer elektromaschine - Google Patents
Hairpin-wicklung eines stators einer elektromaschine Download PDFInfo
- Publication number
- WO2021048086A1 WO2021048086A1 PCT/EP2020/075012 EP2020075012W WO2021048086A1 WO 2021048086 A1 WO2021048086 A1 WO 2021048086A1 EP 2020075012 W EP2020075012 W EP 2020075012W WO 2021048086 A1 WO2021048086 A1 WO 2021048086A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pin
- stator
- connection
- type
- groove
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
- H02K3/14—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots with transposed conductors, e.g. twisted conductors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/52—Fastening salient pole windings or connections thereto
- H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
Definitions
- the invention relates to a stator with pins for an electric machine, in particular an electric motor.
- Electric machines are generally known and are increasingly used as electric motors for driving vehicles.
- An electric machine consists of a stator and a rotor.
- the stator comprises a large number of slots in which the windings are guided.
- the turns can be formed from insulated copper rods as so-called pins.
- the rotor is located in the stator and is connected to a rotor shaft.
- Such a pin, UPin or hairpin motor is known, for example, from US Pat. No. 9,136,738 B2.
- the object of the present invention is to provide a stator with turns made of pins that is easy to manufacture.
- the stator for an electrical Ma machine comprises a plurality of pins which are arranged on concentric circles at different distances from a stator center point (M) in grooves in the stator, and each concentric circle forms a layer; whereby four pins in different layers are serially connected to each other and form a turn.
- a first pin of the turn is located in a first slot in the 4n-3 layer, where n is a natural number; a second pin of the turn is located in a second slot in the 4n-2 layer, with the second slot being a first having a radial distance in a first circumferential direction of the stator to the first groove; a third pin of the turn is in the first slot in the 4n layer; a fourth pin of the turn is in the second groove in the 4n-1 layer.
- a stator with the winding according to the invention can be easily manufactured and generates an efficient electromagnetic field.
- the connection types create an electrically conductive connection between the pins in the grooves.
- the type of connection can be a welding of conductors to the pins or the pins can already be designed as double pins or so-called Upins and thereby establish a connection as soon as they lead into the stator. Furthermore, welding of end sections of pins that are bent towards one another also represents a type of connection.
- the layers can be numbered in ascending order from the outside to the center of the stator.
- the stator can preferably have a first and a second end face; and the first and second pins are connected to one another on the second end face by means of a first type of connection; the second and third pin are connected to one another on the first end face by means of a second type of connection; the third and fourth pin on the second end face are connected to one another by means of a third type of connection; wherein the first, second and third connection types are different from each other.
- connection types on different end faces enable improved production.
- An alternating position of the connection types on different end faces enables the efficient formation of a turn around the stator teeth located between the slots.
- Even types of connection on the same end face of the stator can differ from the inside or outside of the stator due to the different bending directions of a pin foot.
- connection is made by a kind of pre-bent pins, so-called double pins or also called Upins, and on another end face of the stator pins are welded individually or one side of the double pin to each other.
- the welding points can be at the feet of the pins or double pins.
- the stator can have at least two turns and at least the fourth pin in the second slot can be connected to a fifth pin in the 4n-3 layer in a third slot by means of a fourth type of connection.
- the stator can have a plurality of turns that stretch over the entire circumference of the stator and thereby form a partial coil.
- the windings have a symmetry which creates a uniform rotating field.
- one pin each of two sub-coils can be connected to one another by means of a fifth type of connection.
- the fifth type of connection can be implemented using a specially bent pin, for example.
- at least two sub-coils can form one coil.
- one pin each of two coils can be connected to one another by means of a sixth type of connection.
- the sixth type of connection can be made by a conductor attached to the pins or by a conductive ring.
- the two coils can be connected in parallel and can also be fed by the same phase.
- the parallel connection can be made by connecting a first and fifth or fourth and eighth end pin in pairs.
- the two coils can be connected in parallel and can also be fed by the same phase.
- the coil sections can form six coils and six phases can be assigned to them in such a way that two coils, which are assigned to different phases, are located in adjacent slots.
- two phases can each have an approximately identical current and voltage curve and thus a six-phase inverter can only drive a three-phase motor. With this arrangement, current sharing of the switching elements in the inverter is possible.
- a further pin of the two coils can preferably be connected to one another and the two coils can thereby be connected in parallel and, in particular, be assigned to a phase. Two coils from adjacent slots can thus be switched in parallel and fed by one phase, so that a stator with windings for a three-phase electrical machine is created.
- the second type of connection can comprise a first double pin, which is formed from the second pin and the third pin, the first double pin having two inwardly bent pin feet each with a weld point and bridging a first radial distance. The double pin can be inserted into the stator from one end and welded to another double pin on the other end.
- the fourth type of connection can preferably comprise a second double pin, which is formed from the fourth pin and the fifth pin, the second double pin having two outwardly curved pin feet each with a welding point and bridging a first radial distance.
- the first distance describes the number of slots to be bridged.
- the actual spatial distance to be bridged depends on the position of the pin in the layer, because the double pins connect different layers.
- the fifth type of connection can comprise a third double pin, which is formed from two first end pins, the third double pin having two pin feet (63b, 61b) bent in the same direction, each with a weld point, and bridging a second radial distance.
- the second radial distance can be at least one groove shorter than the first radial distance.
- a single pin can comprise a second end pin and a pin foot bent clockwise.
- the first type of connection can preferably be formed by a welded connection of a first weld point on the pin base of the second double pin or the first single pin with a second weld point on the pin base of the first double pin or the third double pin.
- the third type of connection can be formed by a welded connection of a third weld point on the pin base of the first double pin or the second single pin with a fourth weld point on the pin base of the second double pin or the third double pin.
- a vehicle (103) has an electrical machine with a stator according to one of the preferred embodiments.
- Figure 1 shows a stator
- FIG. 2 shows a stator with eight slots and four layers.
- FIG. 3 shows a winding diagram of a first partial coil.
- FIG. 4 shows a winding diagram of a second partial coil.
- Figure 5 shows a stator with two sub-coils and their connection and thus a coil.
- FIG. 6 shows a stator with two coils, each consisting of two sub-coils.
- Figure 7 shows a stator with two further coils.
- Figure 8 shows a stator with two further coils.
- Figure 9 shows a stator with six coils.
- FIG. 10 shows a winding diagram of two coils.
- Figure 11 shows two single pins.
- FIG. 12 shows a double pin with inwardly bent pin feet.
- Figure 13 shows a double pin with outwardly bent pin feet.
- FIG. 14 shows a double pin with a pin foot bent inwards and one bent outwards.
- FIG. 15 shows a vehicle with an electric machine, in particular an electric motor, with a stator with an interface.
- FIG. 1 shows a stator 1 with a large number of slots 5 in which pins 3 are guided.
- the stator has a first end face 7 and a second end face 9.
- On the first end face 7 there is also an interface 11 by means of which the stator can be connected to an inverter.
- the interface 11 is connected to the pins by means of a sixth connection type 66.
- a rotor is also required to operate an electrical machine.
- FIG. 2 shows a stator 1 with slots 51, 52, 53, 54, 55,
- FIG. 3 shows the stator 1 from FIG. 2.
- the pins are furthermore arranged on concentric circles, that is to say layers, the concentric circles not being drawn in for a better representation.
- FIG. 3 shows which pins are connected to one another in series. For a better overview there are only pins in the black filled rectangles. The white rectangles are not taken into account in this figure and only make it clear in which layer the pins described are located.
- a first pin 21 is located in a first groove 51 in layer LI.
- This first pin 21 is connected to a second pin 22 in groove 52 by means of a first type of connection 61, shown in dotted lines.
- the second pin 22 is located in layer L2.
- the second pin 22 is connected to a third pin 23 in groove 51 by means of a second type of connection 62, shown in short dashed lines.
- the third pin 23 is in turn located in the first groove 51, that is to say in the same groove as the first pin 21.
- the third pin 23 is, however, in layer L4. Between the first pin 21 and the third pin 23 there is still space in the groove 51 for two more pins. This is shown by two white rectangles as placeholders.
- the third pin 23 is connected to a fourth pin 24 via a third type of connection 63, shown in solid lines.
- the fourth pin 24 is in the same groove 52 as the second pin 22.
- the fourth pin 24 is in layer L3 directly next to the second pin 22.
- the four pins 21, 22, 23, 24 with their connections, which are through different Connection types 61, 62, 63 are established, form a first turn 41.
- the fourth pin 24 is connected to a fifth pin 25 in a third groove 53 via a fourth type of connection 64, shown in long dashed lines.
- the previously described serial connection of the subsequent pins in the stator begins again with the fifth pin 25, the position of the fifth pin 25 having rotated 90 degrees counterclockwise to the position of the first pin 21.
- the serial connection of the fifth pin 25 with further pins in the grooves 53 and 54 forms a second turn 42.
- the first, second and third connection types 61, 62, 63 between these pins are identical to the respective first, second and third connection types 61, 62, 63 of the pins of the first turn 41.
- the two turns 41, 42 are connected by the fourth connec tion type 64.
- the turn 43 is formed in the grooves 55, 56 and the turn 44 in the grooves 57, 58.
- the fourth type of connection 64 between the respective turns 41, 42, 43, 44 is thus identical.
- the first, second and third connection types 61, 62, 63 between the pins of the turns 43, 44 are also identical to the first, second and third connection types 61, 62, 63 of the turns 41, 42.
- the four turns 41, 42, 43, 44 form a first partial coil by rotating around the stator 1 in a counterclockwise direction.
- the last pin in this sub-coil is the end pin 26.
- FIG. 4 shows the stator 1 from FIG. 3, eight slots 91, 92, 93, 94, 95, 96, 97, 98 being shown there, which are on the left of the grooves from FIG. 3 are in direct proximity to the grooves from FIG.
- Pins 31, 32, 33, 34 are connected in series in a manner similar to pins 21, 22, 23, 24 of FIG.
- the respective type of connection is identical to Figure 3 and made clear by the same reference numerals.
- the turn 45 represents a special feature and is described in FIG. It can be seen from FIG. 4 that the pins of the turns 46, 47, 48 are formed in the same way as in FIG.
- a first pin 31 of the second sub-coil is located in a first slot 94 in layer LI.
- This first pin 31 is connected to a second pin 32 in groove 93 by means of the first type of connection 61, shown in dotted lines.
- the second pin 32 is located in layer L2.
- the second pin 32 is connected to a third pin 33 in groove 94 by means of the second type of connection 62, shown in short dashed lines.
- the third pin 33 is again in the first groove 94, that is to say in the same groove as the first pin 31.
- the third pin 33 is in the layer L4. Between the first pin 31 and the third pin 33 there is still space in the groove 98 for two more pins, this is represented by two white rectangles as placeholders.
- the third pin 33 is connected to a fourth pin 34 via the third type of connection 63, shown in solid lines.
- the fourth pin 34 lies in the same groove 93 as the second pin 32.
- the fourth pin 34 lies in the layer L3 directly next to the second pin 32.
- the serial connection of the first pin of the second turn 47 with other pins in the grooves 97 and 98 forms a third turn 48.
- the first, second and third type of connection 61, 62, 63 between these pins is identical to the respective first, second and third type of connection 61, 62,
- the turns 46, 47, 48 form a serial connection of the pins in the stator, as described above.
- the turn 45 is formed at the beginning and at the end of the serial connection.
- the fourth pin 34 of the first turn 46 is connected to a fifth pin 35 in a third groove 92 via the fourth type of connection 64.
- the fifth pin 35 is in turn over a first
- Type of connection 61 with a first end pin 36 in groove 91 a related party is connected to the end pin 26 of the first sub-coil according to FIG.
- the pin in layer 3 of slot 91 is connected to the pin in layer 4 of slot 92.
- This last pin is designed as a single pin and has an output 83 for connecting an energy source.
- the four turns 45, 46, 47, 48 thus form the second sub-coil.
- the circuit of the serial connection of the pins of the second sub-coil thus runs in the opposite direction to the pins of the first sub-coil.
- the direction of rotation can be freely selected for both sub-coils, it just has to be different.
- FIG. 5 shows the connection of the first and second partial coil from FIGS. 3 and 4, whereby the turn 45 of the second partial coil from FIG. 4 is a special feature.
- This turn 45 begins with a first end pin of the second sub-coil in layer 2 in the slot 91, which is connected to the first end pin 26 of the turn 44 of the first sub-coil in slot 58 by means of a fifth type of connection 65.
- This connection is shown in FIG. 5 by a long-dashed, bold line.
- the first and second coil sections are connected by a fifth connection type 65 between layer L3 in slot 58 and layer L2 in slot 91 and form a first coil 201.
- FIG. 6 shows a pin assignment through the two partial coils from FIGS. 3 and 4, which are represented by black squares.
- the same reference symbols from these figures denote the same pins, grooves, connection types.
- two further sub-coils based on the principle of Figures 3 and 4 are drawn as white squares in the white rectangles, each filling the free layer in the slots of the first and second sub-coil and thus a second coil according to a winding scheme of the first and second sub-coil form.
- two coils are thus shown, each consisting of two sub-coils.
- connection of the two sub-coils of the second coil 202 is shown by a long-dashed line 67 and it follows with the fifth type of connection.
- the inputs and outputs of the coils which are implemented as individual pins 217, 219, see FIG. 11, are also shown.
- the input 81 of the first coil is located at the slot 51 and the output 83 at the slot 92.
- the input 87 of the second coil is located at the slot 93 and the output 85 at the slot 58.
- the second radial distance 73 is, for example, one Groove shorter than the first radial distance 71.
- FIG. 7 shows a pin assignment through a third and fourth coil in the black squares with a white point and the white squares with a black point. This is created by a winding scheme known from FIGS. 3, 4, 5 and 6, which is offset by two slots in a clockwise direction compared to the pins and connections shown there. The inputs 101 and outputs 103 of the third coil and inputs 107 and outputs 105 of the fourth coil are also shown.
- FIG. 8 shows a pin assignment through a fifth and sixth coil. This is created by a winding scheme known from FIGS. 3, 4, 5 and 6, which is offset by four slots in a clockwise direction compared to the pins and connections shown there. The inputs 111 and outputs 113 of the fifth coil and inputs 117 and outputs 115 of the sixth coil are also shown.
- FIG. 9 shows a pin assignment through the six coils as a combination of FIGS. 6, 7 and 8.
- FIG. 10 shows the winding diagram of the first coil 201 and the second coil 202 in the case of a stator with 48 slots and four layers.
- the third and fourth coils, as well as the fifth and sixth coils, are created by being offset by two slots each and are not shown in FIG.
- the inputs 81, 87 and outputs 83, 85 of the two coils 201, 202 are also shown.
- FIG. 11 shows two individual pins 217, 219 or Ipins. In the middle is the actual pin, which is arranged in the slot of the stator.
- the reference numbers are identical to the previous figures. From the point of view of the center of the stator, the pins are shown with the first face upwards.
- the input or output 81, 101, 111, 83, 103, 113, 85, 105, 115, 87, 107, 117 is located at the upper end.
- the left single pin 217 is used on layer 4.
- the right single pin 219 is used on layer 1.
- both pins have a pin foot 63a, 61a with a welding point 221, 225.
- FIG. 12 shows a first double pin 211, which is made from a longer pin bent in front and which establishes the connection type 62 between a second 22, 32 and a third pin 23, 33.
- the pre-bent connection 62 is located on the first end face 7 and the connection is established on the second end face 9 by welding at the weld points 223, 225 of the pin feet 63a, 61b.
- the center lies in the groove and forms the pins mentioned with the familiar reference symbols from the previous figures.
- the double pin can bridge the distance 71 between the grooves.
- connection 61 is formed by the right single pin 217 from FIG. 11 and the first double pin 211 from FIG. 12 via the pin feet 61a, 61b by welding the two spot welds 221 and 223.
- the left single pin 219 in FIG. 11 is similar to pins 23, 33 of the first double pin 211 in FIG. 12.
- the pin foot 63a and the weld point 225 are identical.
- the single pin 219 has no connection 62 like the first double pin 211, since the coil ends or begins on the left single pin 219.
- FIG. 13 shows a second double pin 213 or Upin. This pre-bent second double pin 213 forms the connection 64 between the fourth pins 24, 34 and the fifth or first pin 31, 25.
- Only the first pin 21 of the first turn of the first coil section of each coil is designed as a single pin.
- the pin feet 63b, 61a arranged at the bottom of the pins form the connection types 61 and 63 via their weld points 227, 221, with the weld points 223, 225 of the pins in FIGS. 11, 12, 14.
- the first distance 71 is only identical with regard to the number of grooves to be bridged.
- the actual spatial distance to be bridged differs because the double pins connect different layers.
- the right single pin 217 in FIG. 11 is similar to pins 25, 31, 35 of the second double pin 217 in FIG. 13.
- the pin foot 61a and the weld point 221 are identical.
- the single pin 217 has no connection 64 like the second double pin 213, since the coil ends or begins on the right single pin 217.
- the double pin 215 of FIG. 14 forms the type of connection 65, 67 and, as a special double pin, is only available once per coil.
- the double pin 215 comprises the pins 26, 36 and the pin feet 63b, 61b with the weld points 227, 223, which form the connection type 61 and 63 with the weld points 225 and 221.
- the double pin 215 can bridge the second distance 73, that is to say one groove less than the first distance 71.
- FIG. 15 is a schematic diagram of an exemplary embodiment of a vehicle 403, for example a hybrid vehicle or an electric vehicle, comprising an electrical machine 401, in particular an electric motor, with an exemplary embodiment of the stator 1 for driving the vehicle 403 an inverter 405 which supplies the electric machine 401 with an alternating current from a direct current source.
- a vehicle 403 for example a hybrid vehicle or an electric vehicle, comprising an electrical machine 401, in particular an electric motor, with an exemplary embodiment of the stator 1 for driving the vehicle 403 an inverter 405 which supplies the electric machine 401 with an alternating current from a direct current source.
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Abstract
Description
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Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020227011701A KR20220062573A (ko) | 2019-09-11 | 2020-09-08 | 전기 기계용 핀을 갖는 스테이터 |
JP2022515988A JP2022547318A (ja) | 2019-09-11 | 2020-09-08 | 電気機械のためのピンを有するステータ |
US17/642,405 US20220337114A1 (en) | 2019-09-11 | 2020-09-08 | Stator with pins for an electric machine |
CN202080073198.XA CN114667664A (zh) | 2019-09-11 | 2020-09-08 | 电机定子的发卡式绕组 |
EP20768571.0A EP4029124A1 (de) | 2019-09-11 | 2020-09-08 | Hairpin-wicklung eines stators einer elektromaschine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019124464.1A DE102019124464A1 (de) | 2019-09-11 | 2019-09-11 | Stator mit Pins für eine elektrische Maschine |
DE102019124464.1 | 2019-09-11 |
Publications (1)
Publication Number | Publication Date |
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WO2021048086A1 true WO2021048086A1 (de) | 2021-03-18 |
Family
ID=72432904
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2020/075012 WO2021048086A1 (de) | 2019-09-11 | 2020-09-08 | Hairpin-wicklung eines stators einer elektromaschine |
Country Status (7)
Country | Link |
---|---|
US (1) | US20220337114A1 (de) |
EP (1) | EP4029124A1 (de) |
JP (1) | JP2022547318A (de) |
KR (1) | KR20220062573A (de) |
CN (1) | CN114667664A (de) |
DE (1) | DE102019124464A1 (de) |
WO (1) | WO2021048086A1 (de) |
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US20110025162A1 (en) * | 2009-07-31 | 2011-02-03 | Hitachi, Ltd. | Rotating Electrical Machine |
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JP3155532B1 (ja) * | 1999-12-01 | 2001-04-09 | 三菱電機株式会社 | 車両用交流発電機の固定子 |
JP3676707B2 (ja) * | 2001-07-18 | 2005-07-27 | 三菱電機株式会社 | 車両用交流発電機の固定子およびその製造方法 |
JP3709823B2 (ja) * | 2001-10-05 | 2005-10-26 | 株式会社デンソー | 車両用交流発電機 |
US6894417B2 (en) * | 2002-05-15 | 2005-05-17 | Remy Inc. | Multi-set rectangular copper hairpin windings for electric machines |
WO2008081020A2 (de) * | 2006-12-29 | 2008-07-10 | Robert Bosch Gmbh | Wechselstromgenerator mit einem ständer und einer in ständernuten einliegenden ständerwicklung aus wicklungselementen sowie ein verfahren zur herstellung eines erfindungsgemässen ständers |
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JP6120987B2 (ja) * | 2013-11-29 | 2017-04-26 | 三菱電機株式会社 | 電気機械の電機子 |
JP6638629B2 (ja) * | 2016-11-28 | 2020-01-29 | トヨタ自動車株式会社 | 回転電機のステータ |
CN207265747U (zh) * | 2017-09-20 | 2018-04-20 | 中国第一汽车股份有限公司 | 一种交流发电机的定子绕组 |
CA3122862A1 (en) * | 2018-12-11 | 2020-06-18 | Societe De Commercialisation Des Produits De La Recherche Appliquee Socpra Sciences Et Genie S.E.C. | Processes and systems for producing and/or purifying gallium-68 |
DE102019133549A1 (de) * | 2019-12-09 | 2021-06-10 | Valeo Siemens Eautomotive Germany Gmbh | Stator mit Pins für eine elektrische Maschine |
-
2019
- 2019-09-11 DE DE102019124464.1A patent/DE102019124464A1/de active Pending
-
2020
- 2020-09-08 KR KR1020227011701A patent/KR20220062573A/ko active IP Right Grant
- 2020-09-08 US US17/642,405 patent/US20220337114A1/en active Pending
- 2020-09-08 CN CN202080073198.XA patent/CN114667664A/zh active Pending
- 2020-09-08 EP EP20768571.0A patent/EP4029124A1/de active Pending
- 2020-09-08 JP JP2022515988A patent/JP2022547318A/ja active Pending
- 2020-09-08 WO PCT/EP2020/075012 patent/WO2021048086A1/de unknown
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US20110025162A1 (en) * | 2009-07-31 | 2011-02-03 | Hitachi, Ltd. | Rotating Electrical Machine |
DE102010053719A1 (de) * | 2010-12-01 | 2012-06-06 | Robert Bosch Gmbh | Verfahren zur Herstellung einer Ständerwicklung einer elektrischen Maschine, insbesondere zur Herstellung eines Wechselstromgenerators |
WO2012072754A2 (de) * | 2010-12-01 | 2012-06-07 | Robert Bosch Gmbh | Verfahren zur herstellung einer ständerwicklung einer elektrischen maschine, insbesondere zur herstellung eines wechselstromgenerators |
US9136738B2 (en) | 2011-09-24 | 2015-09-15 | Denso Corporation | Electric rotating machine |
DE112013006691T5 (de) * | 2013-02-18 | 2015-10-29 | Mitsubishi Electric Corporation | Drehende elektrische Maschine |
EP3096441A1 (de) * | 2014-01-17 | 2016-11-23 | Mitsubishi Electric Corporation | Elektrische drehmaschine |
Also Published As
Publication number | Publication date |
---|---|
JP2022547318A (ja) | 2022-11-11 |
US20220337114A1 (en) | 2022-10-20 |
CN114667664A (zh) | 2022-06-24 |
KR20220062573A (ko) | 2022-05-17 |
EP4029124A1 (de) | 2022-07-20 |
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