WO2022109647A1 - Maschinenbauteil für eine elektrische maschine - Google Patents
Maschinenbauteil für eine elektrische maschine Download PDFInfo
- Publication number
- WO2022109647A1 WO2022109647A1 PCT/AT2021/060450 AT2021060450W WO2022109647A1 WO 2022109647 A1 WO2022109647 A1 WO 2022109647A1 AT 2021060450 W AT2021060450 W AT 2021060450W WO 2022109647 A1 WO2022109647 A1 WO 2022109647A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electrical conductors
- insulating elements
- grooves
- additional insulating
- electrical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/10—Applying solid insulation to windings, stators or rotors, e.g. applying insulating tapes
- H02K15/105—Applying solid insulation to windings, stators or rotors, e.g. applying insulating tapes to the windings
-
- 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
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/38—Windings characterised by the shape, form or construction of the insulation around winding heads, equalising connectors, or connections thereto
Definitions
- the invention relates to a machine component for an electrical machine, comprising a component body in which slots are formed, electrical conductors being arranged in the slots, which protrude from the slots at axial ends of the slots and are arranged crossing one another in at least one protruding area , and wherein the electrical conductors are electrically isolated from one another in the area outside the grooves with additional insulating elements.
- the invention further relates to an electrical machine comprising a stator and a rotor.
- the invention relates to a method for producing a machine component for an electrical machine by providing a component body in which grooves are formed, electrical conductors being arranged in the grooves in such a way that they protrude from the grooves at axial ends of the grooves, and in are arranged crossing one another in at least one protruding area, and the electrical conductors are electrically insulated from one another in the area outside the grooves with additional insulating elements.
- a rotary electric machine containing an armature with an annular armature core, in which grooves are arranged on the circumference; and an armature winding attached to the armature core, the armature winding including a plurality of winding skörpem, each formed by winding a conductor wire having an insulating coating is formed, and insulating members, which is different from the insulating coating.
- EP 1 401 085 A2 describes an electric motor, comprising: a stator core with slots; coils arranged along the slots of the stator core to form coil edges projecting from the ends of the stator core; and insulating sheets for insulating proximal portions of the coil edges, each of the insulating sheets having a wrapping portion for folding over one or more coils of the same phase and inserting portions inserted into a slot or slots of the stator core.
- the invention is based on the object of improving a component having an electrical winding.
- the object of the invention is achieved in that the additional insulating elements are arranged exclusively between the electrical conductors.
- the object of the invention is achieved with the electrical machine mentioned at the outset, which includes the machine component according to the invention.
- the invention is achieved with the method mentioned at the outset, according to which it is provided that the additional insulating elements are arranged exclusively between the electrical conductors.
- the advantage here is that, despite the use of additional electrical insulation, the machine component can be kept compact, since the additional insulating elements are only used where this is advantageous for improving voltage and partial discharge resistance.
- the additional insulating elements are therefore no longer arranged around the entire circumference of the electrical conductors.
- an improvement in the mechanical strength of the end winding of the mechanical engineering part can also be achieved.
- a cost reduction can be achieved due to the lower material consumption.
- the copper fill factor can also be increased by reducing the insulation material.
- the additional insulating elements are designed in the form of strips. It is thus possible to arrange the insulating elements exclusively along the electrical conductors.
- the additional insulating elements are arranged adhering to the surfaces of electrical conductors, since the surface area can be reduced due to the reduced risk of the additional insulating elements slipping.
- a further reduction in the space requirement can be achieved in that the number of additional insulating elements corresponds at most to half the number of electrical conductors.
- the additional insulating elements have a maximum layer thickness of 400 ⁇ m.
- the electrical conductors are designed as shaped rods with an at least approximately square cross section.
- the additional insulating elements are preferably arranged between electrical conductors lying one above the other and/or next to one another.
- Fig. 1 shows a machine component with a part of electrical conductors in an oblique view
- FIG. 2 shows the machine compartment according to FIG. 1 in side view
- FIG. 4 shows a section of an embodiment variant of a machine component in the area of the end winding.
- the electrical machine is in particular a motor, but can also be designed differently, such as example as a generator.
- the machine component 1 can in particular be a stator or a rotor of the electric machine, it being possible for the machine component 1 to form both the stator and the rotor of an electric machine.
- machine component 1 is designed as a stator of the electrical Ma machine.
- the following statements must therefore be adapted accordingly, if the machine component 1 is designed as a rotor. Since this adaptation, such as the arrangement of grooves, is known to a person skilled in the art, it is not specifically pointed out below. These adaptations should therefore be read along.
- the machine component 1 has a component body 2 .
- the component body 2 is in particular a laminated core, but can also be designed differently.
- the component body 2 has the shape of a hollow cylinder.
- ne are distributed next to each other in a circumferential direction 3 grooves 4 are formed. Beginning at an inner surface 5, the grooves 4 extend radially outward. The grooves 4 extend through the entire component body 2 in the direction of a central longitudinal axis 6 (rotational axis).
- Electrical conductors 7 are arranged in the grooves 4, in particular plugged in. Only one electrical conductor 7 can be arranged per slot 4 . Preferably, however, there are several electrical conductors 7 per slot 4, which can also be seen in FIG. However, it should be pointed out that, for better understanding, only some of the electrical conductors 7 are shown in FIG. 1 as an example.
- the component body 2 has a first end face 8 and a second end face 9 opposite this in the direction of the longitudinal center axis 6 .
- the electrical conductors 7 have conductor ends 10 with which they protrude from the grooves 7 at the axial end of the grooves 7, which are each formed in the end faces 8, 9.
- the Leinicden 10 of the same phases are brought together. This can be done, for example, by further bending the conductor ends 10 so that the conductor ends 10 extend from one slot 7 to another slot 7 (phase-dependent), as shown in FIG.
- the conductor ends 10 it is also possible for the conductor ends 10 to have end regions 11 at which two conductor ends 10 abut one another depending on the phase in order to be electrically conductively connected to one another in these end regions 11, in particular with a material bond, as shown in FIG Section of an embodiment of the machine component 1 shows.
- the conductor ends 10 are reversed in and against the circumferential direction 3 bow.
- the specific design of the winding is dependent on the desired winding scheme, which can vary depending on the design of the machine component 1.
- Such winding schemes are known from the prior art, so that they will not be discussed further in order to avoid repetition. Reference is therefore made to the relevant prior art.
- the conductor ends 10 By bending the conductor ends 10, the conductor ends 10 cross over (as can be seen from Figs. 1 to 4), which means there is a risk of mutual contact.
- the electrical conductors 7, which are already provided with electrical insulation on the outside, are provided with additional insulating elements 12 in the region of the conductor ends, as can best be seen in FIGS. 3 and 4.
- these additional insulating elements 12 also referred to as phase insulation or winding head insulation
- at least the radially outermost surfaces 13 of the radially outermost layer 14 and the radially innermost surfaces of the radially innermost bearings of the electrical conductors 7 are free of the additional electrical insulating elements 12.
- the additional insulating element 12 can be arranged between two electrical conductors 7 lying one above the other in the radial direction (as shown in Figs. 3 and 4) and/or between electrical conductors 7 which lie directly next to one another in a layer of electrical conductors 7 of the same radial height , be provided.
- the additional insulating elements 12 are therefore provided in the so-called end winding between electrical conductors 7 of different phases.
- electrical insulating elements for example made of paper, are usually also provided in the grooves 7 . It can be seen that the additional electrical insulating elements 12 form part of the electrical insulating elements in the grooves 7 . However, the additional electrical insulating elements 12 are preferably provided in addition to the existing or used electrical insulation of the electrical conductors 7 in the groove area.
- the additional insulating elements 12 can extend over at least approximately the entire area of the electrical conductors 7 bent obliquely with respect to the circumferential direction 3, with this area preferably covering the entire area of overlap of each other crossing conductor ends 10 of the electrical conductors 7 covers.
- the additional insulating elements 12 can also be limited to the crossing regions of the electrical conductors 7 crossing one another, or they can extend beyond the conductor ends 10 into the slots 7 and form part of the slot insulation there. However, the latter is not the preferred variant if a smaller layer thickness of insulating material is sufficient for the slot insulation than in the area of the conductor ends 10.
- the layer thickness of the additional insulating elements 12 can in particular be a maximum of 400 mhi, in particular between 80 mhi and 300 mhi.
- the additional insulating elements 12 consist of any suitable material.
- they can be made of a polyamide, a polyimide, PEEK, PPS, PPSU, PESU, PAI, PEI, PTFE, mica, or a material combination of similar electrically insulating materials.
- the additional insulating elements 12 preferably have an adhesive layer, so that they can be arranged on the surface of the electrical conductors 7 in an adhesive manner.
- the additional insulating elements 12 are designed in the form of strips, for example made from an adhesive tape.
- the number of additional insulating elements 12 corresponds to a maximum of half the number of electrical conductors 7 .
- the number of additional insulating elements 12 can be between N/2 and N/9, where N is the total number of electrical conductor ends 10 that protrude from the grooves 4.
- the respective radially outer surfaces of the radially inner layer of electrical conductors 7 of crossing electrical conductors 7 are provided with the additional insulating elements 12 .
- the radially inner surfaces of the respective radially outer layer of electrical conductors 7 can be provided with the additional insulating elements 12 .
- both the radially outer surface of the inner layer of electrical's conductors 7 and the radially inner surfaces of the radially outer layer of electrical Leitem 7 are provided with the additional insulating elements 12.
- the electrical conductors 7 are designed as shaped rods with an at least approximately square cross section (as so-called hairpins). However, the electrical conductor's 7 can also have a round cross-section.
- the additional electrical insulating elements 12 are preferably no wider than the electrical conductors 7 at the surface on which the electrical insulating elements 12 are arranged, as can be seen from FIGS. 3 and 4.
- FIG. 1 is a diagrammatic representation of the electrical conductors 7 at the surface on which the electrical insulating elements 12 are arranged.
- the electrical insulating elements 12 are preferably embodied as strips which are arranged inclined between the conductors in the circumferential direction. The angle of inclination depends on the electrical conductors 7. If these are arranged to run in the direction of the longitudinal center axis 6, the strip-shaped additional insulating elements 12 also run in this direction (ie at an angle of 90 ° to the circumferential direction). If the electrical conductors 7 are inclined in relation to the circumferential direction 3, the additional insulating elements 12 also follow this inclination. In general, it can therefore be said that the electrical insulating elements are preferably arranged following the course of the electrical conductors 7 in the conductor ends 10 .
- the invention provides in particular that the phase insulation is preferably implemented on one side and separately for each electrical conductor 7 by means of a strip.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112021006174.7T DE112021006174A5 (de) | 2020-11-27 | 2021-11-25 | Maschinenbauteil für eine elektrische maschine |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA51038/2020A AT524330B1 (de) | 2020-11-27 | 2020-11-27 | Maschinenbauteil für eine elektrische Maschine |
| ATA51038/2020 | 2020-11-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2022109647A1 true WO2022109647A1 (de) | 2022-06-02 |
Family
ID=78844581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/AT2021/060450 Ceased WO2022109647A1 (de) | 2020-11-27 | 2021-11-25 | Maschinenbauteil für eine elektrische maschine |
Country Status (3)
| Country | Link |
|---|---|
| AT (1) | AT524330B1 (de) |
| DE (1) | DE112021006174A5 (de) |
| WO (1) | WO2022109647A1 (de) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1401085A2 (de) | 2002-09-20 | 2004-03-24 | Fanuc Ltd | Wickelkopfisolierung von elektrischen Maschinen |
| JP2012231638A (ja) * | 2011-04-27 | 2012-11-22 | Toyota Motor Corp | 回転電機ステータ |
| DE112013004258T5 (de) | 2012-08-31 | 2015-06-25 | Mitsubishi Electric Corporation | Umlaufende elektrische Maschine und Herstellungsverfahren dafür |
| EP3557735A1 (de) * | 2018-04-19 | 2019-10-23 | Aumann Espelkamp GmbH | Verfahren und vorrichtung zum isolieren der wickelköpfe einer wellenwickelmatte |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004064989A (ja) * | 2002-06-04 | 2004-02-26 | Toyota Motor Corp | セグメントコイル回転電機の固定子及びその製造方法 |
| JP5804095B2 (ja) * | 2013-01-22 | 2015-11-04 | トヨタ自動車株式会社 | ステータ及びステータの製造方法 |
| JP5847258B1 (ja) * | 2014-08-28 | 2016-01-20 | 三菱電機株式会社 | 回転電機 |
| JP6900934B2 (ja) * | 2018-04-25 | 2021-07-14 | 日立金属株式会社 | 絶縁電線およびその製造方法 |
-
2020
- 2020-11-27 AT ATA51038/2020A patent/AT524330B1/de active
-
2021
- 2021-11-25 WO PCT/AT2021/060450 patent/WO2022109647A1/de not_active Ceased
- 2021-11-25 DE DE112021006174.7T patent/DE112021006174A5/de active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1401085A2 (de) | 2002-09-20 | 2004-03-24 | Fanuc Ltd | Wickelkopfisolierung von elektrischen Maschinen |
| JP2012231638A (ja) * | 2011-04-27 | 2012-11-22 | Toyota Motor Corp | 回転電機ステータ |
| DE112013004258T5 (de) | 2012-08-31 | 2015-06-25 | Mitsubishi Electric Corporation | Umlaufende elektrische Maschine und Herstellungsverfahren dafür |
| EP3557735A1 (de) * | 2018-04-19 | 2019-10-23 | Aumann Espelkamp GmbH | Verfahren und vorrichtung zum isolieren der wickelköpfe einer wellenwickelmatte |
Also Published As
| Publication number | Publication date |
|---|---|
| AT524330A4 (de) | 2022-05-15 |
| AT524330B1 (de) | 2022-05-15 |
| DE112021006174A5 (de) | 2023-09-14 |
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