CN111133660A - Stator for rotating electrical machine with improved hybrid winding configuration - Google Patents
Stator for rotating electrical machine with improved hybrid winding configuration Download PDFInfo
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- CN111133660A CN111133660A CN201880044115.7A CN201880044115A CN111133660A CN 111133660 A CN111133660 A CN 111133660A CN 201880044115 A CN201880044115 A CN 201880044115A CN 111133660 A CN111133660 A CN 111133660A
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- 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
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Abstract
The invention mainly relates to a stator for a rotating electric machine, comprising a winding having the following characteristics: -a first three-phase system (a, b, c) and a second three-phase system (d, e, f) of a first type, -a third three-phase system (A, B, C) and a fourth three-phase system (D, E, F) of a second type, -the first three-phase system (a, b, c) being connected in series with the fourth three-phase system (D, E, F), -the second three-phase system (d, e, f) being connected in series with the third three-phase system (A, B, C), characterized in that: -at least one phase of the first three-phase system (a, b, c) and at least one phase of the third three-phase system (A, B, C) are within the same series of recesses, and-at least one phase of the second three-phase system (d, e, f) and at least one phase of the fourth three-phase system (D, E, F) are within the same series of recesses.
Description
Technical Field
The present invention relates to a stator for a rotary electric machine having an improved hybrid winding configuration.
Background
In a manner known per se, the rotating electrical machine comprises a stator and a rotor integral with a shaft. The rotor may be integral with the drive shaft and/or the driven shaft and may be part of a rotating electrical machine in the form of an alternator, an electric motor or a reversible electrical machine that is capable of operating in two modes.
The rotor comprises a body formed by a stack of metal plates, which are held in the form of packs by means of a suitable fixing system. The rotor comprises poles, for example formed by permanent magnets, which are housed in cavities each delimited by two adjacent rotor teeth. Alternatively, the rotor may be a so-called salient pole rotor comprising windings wound on rotor arms. The rotor may also be in the form of an alternator rotor comprising pole wheels between which the windings are mounted.
Furthermore, the stator is mounted in a housing configured to carry a rotating rotor shaft, for example by means of bearings. The stator includes a body provided with a plurality of teeth defining slots, and windings inserted into the slots of the stator. The windings are obtained, for example, from enamelled continuous wires or from conductive elements in the form of pins connected together by welding.
The documents US7030533 or US7291954 describe a winding comprising a first and a second three-phase system of triangular shape. The winding further comprises a star-shaped third three-phase system and a fourth three-phase system. The first three-phase system is connected in series to the fourth three-phase system, and the second three-phase system is connected in series to the third three-phase system. Furthermore, the first and second three-phase system are positioned relative to each other in the same series of tanks, and the third and fourth three-phase system are positioned relative to each other in the same series of tanks. However, this configuration has the disadvantage of introducing a non-zero electrical angle between the phase voltages of the delta system and the phase voltages of the corresponding star system. This causes non-negligible fluctuations of the output current of the motor.
Disclosure of Invention
The present invention aims to effectively overcome this drawback by proposing a stator for a rotating electric machine of a motor vehicle, comprising a body provided with slots and a winding having the following characteristics:
-a first three-phase system and a second three-phase system of a first type,
-a third three-phase system and a fourth three-phase system of a second type,
the first three-phase system is connected in series to the fourth three-phase system,
the second three-phase system is connected in series to the third three-phase system,
it is characterized in that the preparation method is characterized in that,
at least one phase of the first three-phase system and at least one phase of the third three-phase system are located in the same series of cells, and
at least one phase of the second three-phase system and at least one phase of the fourth three-phase system are located in the same series of cells.
The invention thus allows mechanical correction of the electrical angle between the phases of different three-phase systems, which makes it possible in particular to minimize fluctuations in the output current of the rotating electrical machine.
According to an embodiment, the first phase of the first three-phase system and the first phase of the third three-phase system are in the same first series of slots.
According to an embodiment, the first phase of the second three-phase system and the first phase of the fourth three-phase system are in the same second series of slots.
According to an embodiment, the second phase of the first three-phase system and the second phase of the third three-phase system are located in the same third series of cells.
According to an embodiment, the second phase of the second three-phase system and the second phase of the fourth three-phase system are located in the same fourth series of cells.
According to an embodiment, the third phase of the first three-phase system and the third phase of the third three-phase system are located in the same fifth series of slots.
According to an embodiment, the third phase of the second three-phase system and the third phase of the fourth three-phase system are located in the same sixth series of slots.
According to an embodiment, the first series of slots receiving the first phase of the first three-phase system and the first phase of the third three-phase system is adjacent to the second series of slots receiving the first phase of the second three-phase system and the first phase of the fourth three-phase system.
According to an embodiment, the third series of slots receiving the second phase of the first three-phase system and the second phase of the third three-phase system is adjacent to the fourth series of slots receiving the second phase of the second three-phase system and the second phase of the fourth three-phase system.
According to an embodiment, the fifth series of slots receiving the third phase of the first three-phase system and the third phase of the third three-phase system is adjacent to the sixth series of slots receiving the third phase of the second three-phase system and the third phase of the fourth three-phase system.
According to an embodiment, the third three-phase system and the fourth three-phase system are each connected to a circuit having a function of a rectifier bridge and/or an inverter.
According to an embodiment, the first and second three-phase systems are triangular.
According to an embodiment, the third and fourth three-phase systems are star-shaped.
According to an embodiment, the electrical angle difference between the phase voltage of the first three-phase system and the corresponding phase voltage of the fourth three-phase system is zero.
According to an embodiment, the electrical angle difference between the phase voltage of the second three-phase system and the corresponding phase voltage of the third three-phase system is zero.
According to one embodiment, the phases of the third and fourth three-phase systems are located beside the aperture of the slot. This makes it possible to improve the cooling of the motor by exposing the phases of the airflow generated by the motor fan through which the maximum current flows.
The invention will be better understood upon reading the description given below and examining the accompanying drawings. These drawings are given for illustrative purposes only and in no way limit the invention.
Drawings
Fig. 1 shows a partial cross-sectional view of a stator for a rotating electric machine according to the present invention;
FIG. 2 is a schematic electrical installation of various three-phase systems of a stator according to the present invention;
fig. 3 is a schematic view of the coupling between the phases of various three-phase systems within a slot of a stator according to the invention;
fig. 4 is a schematic diagram showing an electrical angle difference between the phase voltages of the delta system and the phase voltages of the corresponding star system;
FIG. 5 is a graphical representation showing fluctuations in the output current of the motor;
fig. 6 is a graphical representation of current signals in delta and star systems and harmonics of these current signals.
The same, similar or analogous elements hold the same reference numbers in the various figures.
Detailed Description
Fig. 1 shows a stator 10 for a rotary electric machine, which includes a main body 11 and windings 12. The stator body 11 is constituted by axially stacked flat plates. The body 11 comprises teeth 13 having a regular angular distribution. These teeth 13 define slots 16 such that each slot 16 is defined by two consecutive teeth 13. The groove 16 opens axially in an axial end face of the body 11. The slots 16 are also open radially towards the interior of the body. The stator body 11 may be provided with a tooth root 17 beside the free end of the teeth 13.
As can be seen from fig. 2, the winding 12 comprises a first three-phase system a, b, c and a second three-phase system d, e, f of triangular shape. The winding 12 further comprises a star-shaped third three-phase system A, B, C and a fourth three-phase system D, E, F. As a variant, the type of different systems (triangular or star) may be different. The first three-phase system a, b, c is connected in series to a fourth three-phase system D, E, F. The second three-phase system d, e, f is connected in series to a third three-phase system A, B, C.
Each phase is formed by a plurality of concentric turns of a conductor 20, such as a continuous enameled copper wire. The conductor 20 is here circular. Alternatively, to optimize the filling of the slots 16, the conductors 20 may have a rectangular, square or flat shape in cross-section.
Two phases of two different systems are associated with a series of slots S1-S6 so that each slot 16 receives the conductor 20 of the corresponding phase multiple times. Two successive slots 16 of one series are separated by an adjacent slot 16, each slot corresponding to another series of slots associated with the other. Thus, for four three-phase systems, conductors 20 of two associated phases are inserted every [4 (three-phase system) × 3 (phases) ]/2 (phases per slot) ], i.e. every six slots.
The phases of the delta three-phase system and the phases of the star three-phase system may be formed by the same number of turns or different numbers of turns. In the present case, the phases of the delta and star systems are each formed by two turns, so that the stator comprises four conductors per slot.
More precisely, as shown in fig. 3, the first phase "a" of the first three-phase system and the first phase a of the third three-phase system are located in the same first series of slots S1.
The first phase D of the second three-phase system and the first phase D of the fourth three-phase system are located in the same second series of slots S2.
The second phase B of the first three-phase system and the second phase B of the third three-phase system are located in the same third series of tanks S3.
The second phase E of the second three-phase system and the second phase E of the fourth three-phase system are located in the same fourth series of slots S4.
The third phase C of the first three-phase system and the third phase C of the third three-phase system are located in the same fifth series of slots S5.
The third phase F of the second three-phase system and the third phase F of the fourth three-phase system are located in the same sixth series of slots S6.
Preferably, the first series of slots S1 receiving the first phase "a" of the first three-phase system and the first phase a of the third three-phase system is adjacent to the second series of slots S2 receiving the first phase D of the second three-phase system and the first phase D of the fourth three-phase system.
The third series of slots S3 receiving the second phase B of the first three-phase system and the second phase B of the third three-phase system is adjacent to the fourth series of slots S4 receiving the second phase E of the second three-phase system and the second phase E of the fourth three-phase system.
The fifth series of slots S5 receiving the third phase C of the first three-phase system and the third phase C of the third three-phase system is adjacent to the sixth series of slots S6 receiving the third phase F of the second three-phase system and the third phase F of the fourth three-phase system.
Further, the third three-phase system A, B, C and the fourth three-phase system D, E, F are each connected to circuits P1, P2 having a rectifier bridge and/or an inverter function, respectively. Each circuit P1, P2 is mounted between the positive terminal B + and the system ground.
As is clear from fig. 4, the electrical angle difference between the phase voltages Va, Vb, Vc of the first three-phase system and the corresponding phase voltages VD, VE, VF of the fourth three-phase system is zero.
Therefore, the electrical angle difference between the voltage Va of the first phase of the first three-phase system and the voltage VD of the first phase of the fourth three-phase system is zero. The electrical angle difference between the voltage Vb of the second phase of the first three-phase system and the voltage VE of the second phase of the fourth three-phase system is zero.
The electrical angle difference between the voltage Vc of the third phase of the first three-phase system and the voltage VF of the third phase of the fourth three-phase system is zero.
Further, the electrical angle difference between the phase voltages Vd, Ve, Vf of the second three-phase system and the corresponding phase voltages VA, VB, VC of the third three-phase system is zero.
Therefore, the electrical angle difference between the voltage Vd of the first phase of the second three-phase system and the voltage VA of the first phase of the third three-phase system is zero. The electrical angle difference between the voltage Ve of the second phase of the second three-phase system and the voltage VB of the second phase of the third three-phase system is zero. The electrical angle difference between the voltage Vf of the third phase of the second three-phase system and the voltage VC of the third phase of the third three-phase system is zero.
Fig. 5 shows that the present invention makes it possible to minimize the variation of the output current of the motor at a low rotation speed while maximizing the strength thereof. In fact, for a speed of 1800rev/min, the output current Is reaches 132A for a variation Vond of the order of 3.2A; whereas for a motor equipped with a stator as described in document US7291954, the output current of the motor varies by up to 123A for a magnitude of 3.7A.
Advantageously, the phases of the star system (third system A, B, C and fourth system D, E, F) are located beside the hole of the tank 16, while the phases of the triangular system (first system a, b, c and second system D, E, F) are located beside the tank bottom 16.
This makes it possible to improve the cooling of the motor by exposing the phases of the system through which the maximum current flows to the air flow generated by the motor fan. In fact, fig. 6 shows that the first harmonic H1 of the phase current IY of the star system is greater than the first harmonic H1' of the phase current IDelta of the delta system.
In addition, the invention can reduce the AC loss. The amplitude of the third harmonic is also reduced for the current IDA.
Of course, the foregoing description is given by way of example only and does not limit the field of the invention, which does not leave it when various elements are replaced by any other equivalent elements.
Claims (16)
1. Stator (10) for a rotating electrical machine of a motor vehicle, comprising a main body (11) provided with slots (16) and a winding (12) having the following characteristics:
-a first three-phase system (a, b, c) and a second three-phase system (d, e, f) of a first type,
-a third three-phase system (A, B, C) and a fourth three-phase system (D, E, F) of a second type,
-the first three-phase system (a, b, c) is connected in series to the fourth three-phase system (D, E, F),
-the second three-phase system (d, e, f) is connected in series to the third three-phase system (A, B, C),
it is characterized in that the preparation method is characterized in that,
-at least one phase of the first three-phase system (a, b, c) and at least one phase of the third three-phase system (A, B, C) are within the same series of slots (16), and
-at least one phase of the second three-phase system (d, e, f) and at least one phase of the fourth three-phase system (D, E, F) are within the same series of slots (16).
2. The stator according to claim 1, characterized in that the first phase (a) of the first three-phase system and the first phase (a) of the third three-phase system are located in the same first series of slots (S1).
3. A stator according to claim 1 or 2, characterized in that the first phase (D) of the second three-phase system and the first phase (D) of the fourth three-phase system are located in the same second series of slots (S2).
4. A stator according to any one of claims 1 to 3, characterized in that the second phase (B) of the first three-phase system and the second phase (B) of the third three-phase system are located in the same third series of slots (S3).
5. A stator according to any one of claims 1 to 4, characterized in that the second phase (E) of the second three-phase system and the second phase (E) of the fourth three-phase system are located in the same fourth series of slots (S4).
6. A stator according to any of claims 1-5, characterized in that the third phase (C) of the first three-phase system and the third phase (C) of the third three-phase system are located in the same fifth series of slots (S5).
7. A stator according to any one of claims 1-6, characterized in that the third phase (F) of the second three-phase system and the second phase (F) of the fourth three-phase system are located in the same sixth series of slots (S6).
8. A stator according to claims 2 and 3, characterized in that the first series of slots (S1) receiving the first phase (a) of the first three-phase system and the first phase (a) of the third three-phase system is adjacent to the second series of slots (S2) receiving the first phase (D) of the second three-phase system and the first phase (D) of the fourth three-phase system.
9. A stator according to claims 4 and 5, characterized in that the third series of slots (S3) receiving the second phase (B) of the first three-phase system and the second phase (B) of the third three-phase system is adjacent to the fourth series of slots (S4) receiving the second phase (E) of the second three-phase system and the second phase (E) of the fourth three-phase system.
10. A stator according to claims 6 and 7, characterized in that the fifth series of slots (S5) receiving the third phase (C) of the first three-phase system and the third phase (C) of the third three-phase system is adjacent to the sixth series of slots (S6) receiving the third phase (F) of the second three-phase system and the third phase (F) of the fourth three-phase system.
11. A stator according to any of claims 1-10, characterized in that the third (A, B, C) and fourth (D, E, F) three-phase systems are each connected to an electric circuit (P1, P2) with rectifier bridge and/or inverter functionality.
12. A stator according to any of claims 1-11, characterized in that the first (a, b, c) and second (d, e, f) three-phase systems are triangular.
13. A stator according to any of claims 1-12, characterized in that the third three-phase system (A, B, C) and the fourth three-phase system (D, E, F) are star-shaped.
14. A stator according to any one of claims 1-13, characterized in that the electrical angle difference between the phase voltages (Va, Vb, Vc) of the first three-phase system and the corresponding phase voltages (VD, VE, VF) of the fourth three-phase system is zero.
15. A stator according to any one of claims 1-14, characterized in that the electrical angle difference between the phase voltage (Vd, Ve, Vf) of the second three-phase system and the corresponding phase voltage (VA, VB, VC) of the third three-phase system is zero.
16. A stator according to any of claims 1-15, characterized in that the phases of the third (A, B, C) and fourth (D, E, F) three-phase systems are beside the hole of a slot (16).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1756017A FR3068537B1 (en) | 2017-06-29 | 2017-06-29 | ROTATING ELECTRIC MACHINE STATOR HAVING IMPROVED HYBRID WINDING CONFIGURATION |
| FR1756017 | 2017-06-29 | ||
| PCT/EP2018/067303 WO2019002395A1 (en) | 2017-06-29 | 2018-06-27 | Stator for rotating electrical machine having an improved hybrid winding configuration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111133660A true CN111133660A (en) | 2020-05-08 |
| CN111133660B CN111133660B (en) | 2023-01-03 |
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ID=59699915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880044115.7A Active CN111133660B (en) | 2017-06-29 | 2018-06-27 | Stator for rotating electrical machine with improved hybrid winding configuration |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3646441A1 (en) |
| JP (1) | JP7166299B2 (en) |
| CN (1) | CN111133660B (en) |
| FR (1) | FR3068537B1 (en) |
| WO (1) | WO2019002395A1 (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001218439A (en) * | 1999-11-18 | 2001-08-10 | Nsk Ltd | Brushless motor, controller for brushless motor and method for manufacturing motor |
| WO2005029679A1 (en) * | 2003-09-05 | 2005-03-31 | Valeo Equipements Electriques Moteur | Polyphase electric turning machine such as an alternator or an alterno-starter, particularly for a motor vehicle |
| JP2010178622A (en) * | 2010-04-02 | 2010-08-12 | Mitsubishi Electric Corp | Dynamo-electric machine |
| CN101944812A (en) * | 2010-09-30 | 2011-01-12 | 泰豪科技股份有限公司 | Duplex winding structure with fractional slots of servo permanent magnet synchronous motor |
| US20110043069A1 (en) * | 2009-08-21 | 2011-02-24 | Denso Corporation | Electric rotating machine drivable with a single three-phase inverter |
| CN102035271A (en) * | 2009-09-30 | 2011-04-27 | 上海新世纪机器人有限公司 | Double redundancy winding motor |
| CN103580341A (en) * | 2012-07-31 | 2014-02-12 | 株式会社电装 | Rotating electric machine |
| US20150028704A1 (en) * | 2012-03-14 | 2015-01-29 | Hitachi Automotive Systems, Ltd. | Rotating Electrical Machine and Manufacturing Method Therefor |
| CN105762952A (en) * | 2016-04-11 | 2016-07-13 | 天津大学 | Low rotational inertia permanent magnet synchronous servo motor adopting four layer and short pitch distributed windings |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3633494B2 (en) | 2001-02-20 | 2005-03-30 | 株式会社デンソー | Rotating electric machine |
| WO2005107040A1 (en) | 2004-04-28 | 2005-11-10 | Mitsubishi Denki Kabushiki Kaisha | Electric rotating machine |
-
2017
- 2017-06-29 FR FR1756017A patent/FR3068537B1/en active Active
-
2018
- 2018-06-27 JP JP2019572462A patent/JP7166299B2/en active Active
- 2018-06-27 EP EP18732807.5A patent/EP3646441A1/en active Pending
- 2018-06-27 CN CN201880044115.7A patent/CN111133660B/en active Active
- 2018-06-27 WO PCT/EP2018/067303 patent/WO2019002395A1/en unknown
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001218439A (en) * | 1999-11-18 | 2001-08-10 | Nsk Ltd | Brushless motor, controller for brushless motor and method for manufacturing motor |
| WO2005029679A1 (en) * | 2003-09-05 | 2005-03-31 | Valeo Equipements Electriques Moteur | Polyphase electric turning machine such as an alternator or an alterno-starter, particularly for a motor vehicle |
| US20110043069A1 (en) * | 2009-08-21 | 2011-02-24 | Denso Corporation | Electric rotating machine drivable with a single three-phase inverter |
| CN102035271A (en) * | 2009-09-30 | 2011-04-27 | 上海新世纪机器人有限公司 | Double redundancy winding motor |
| JP2010178622A (en) * | 2010-04-02 | 2010-08-12 | Mitsubishi Electric Corp | Dynamo-electric machine |
| CN101944812A (en) * | 2010-09-30 | 2011-01-12 | 泰豪科技股份有限公司 | Duplex winding structure with fractional slots of servo permanent magnet synchronous motor |
| US20150028704A1 (en) * | 2012-03-14 | 2015-01-29 | Hitachi Automotive Systems, Ltd. | Rotating Electrical Machine and Manufacturing Method Therefor |
| CN103580341A (en) * | 2012-07-31 | 2014-02-12 | 株式会社电装 | Rotating electric machine |
| CN105762952A (en) * | 2016-04-11 | 2016-07-13 | 天津大学 | Low rotational inertia permanent magnet synchronous servo motor adopting four layer and short pitch distributed windings |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3068537A1 (en) | 2019-01-04 |
| CN111133660B (en) | 2023-01-03 |
| JP2020526170A (en) | 2020-08-27 |
| EP3646441A1 (en) | 2020-05-06 |
| JP7166299B2 (en) | 2022-11-07 |
| FR3068537B1 (en) | 2019-12-13 |
| WO2019002395A1 (en) | 2019-01-03 |
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