WO2023046332A1 - Rotor pour une machine électrique tournante, machine électrique tournante, entraînement de capsule et embarcation nautique - Google Patents

Rotor pour une machine électrique tournante, machine électrique tournante, entraînement de capsule et embarcation nautique Download PDF

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Publication number
WO2023046332A1
WO2023046332A1 PCT/EP2022/070647 EP2022070647W WO2023046332A1 WO 2023046332 A1 WO2023046332 A1 WO 2023046332A1 EP 2022070647 W EP2022070647 W EP 2022070647W WO 2023046332 A1 WO2023046332 A1 WO 2023046332A1
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WO
WIPO (PCT)
Prior art keywords
rotor
partial laminated
laminated core
shaft
permanent magnets
Prior art date
Application number
PCT/EP2022/070647
Other languages
German (de)
English (en)
Inventor
Christoph Balzer
Torsten Metzner
Sebastian Strüver
Original Assignee
Siemens Energy Global GmbH & Co. KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens Energy Global GmbH & Co. KG filed Critical Siemens Energy Global GmbH & Co. KG
Publication of WO2023046332A1 publication Critical patent/WO2023046332A1/fr

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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
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/09—Machines characterised by the presence of elements which are subject to variation, e.g. adjustable bearings, reconfigurable windings, variable pitch ventilators

Definitions

  • the invention relates to a rotor for an electric rotating machine with a shaft and an annular rotor element that guides the magnetic field and is fastened to the outer circumference of the shaft, is designed as a laminated core and accommodates a large number of permanent magnets along its circumference. Furthermore, the invention relates to an electrical rotating machine with at least one such rotor, a nacelle drive with at least one such electrical rotating machine and a watercraft with at least one such nacelle drive.
  • Electric rotating machines are used in the ship sector, inter alia, for so-called gondola drives, which are also referred to as rudder propellers.
  • the characteristic core feature of such gondola drives is a slim design with a small outer diameter of a machine housing accommodating the electric motor in order to achieve optimal hydrodynamic behavior with high torque density at the same time.
  • the comparatively small outer diameter of the rotor element of the electric motor that guides the magnetic field proves to be disadvantageous, since the rotor element has to be greatly lengthened to generate torque, which increases the electrical losses.
  • permanent magnet excitation is often used in nacelle drives.
  • the rotor design required for this is a significant cost factor.
  • the physical limits of the magnet system are quickly reached.
  • the present invention creates a rotor of the type mentioned at the outset, with the permanent magnets being arranged in pairs in a V-shape, with the rotor element having a large number of partial laminated cores which are evenly distributed in the circumferential direction and arranged in rows in the axial direction
  • Each partial laminated core preferably has at least two permanent magnets, in particular at least four permanent magnets, which are arranged adjacent to one another in the circumferential direction, forming V-shaped arrangements, with each partial laminated core being pushed onto the shaft in a form-fitting manner in the axial direction, forming a dovetail-like connection, axially resilient is secured to this and radially outwardly resiliently biased.
  • the individual losses of the permanent magnets are, if the magnet dimensions of a conventional rotor design in width and height are taken over in total, lower than with the conventional rotor design. This avoids a physically conditioned critical magnet width in the manufacture of the permanent magnets. Since the total volume of the magnets remains the same, it is only divided, it is always guaranteed that you are moving in non-critical areas in terms of production technology. at a On the other hand, with an increase in the performance of a rotor that is built according to the conventional rotor design, there would be the risk of a significantly higher reject rate in the manufacture of the permanent magnets.
  • the V-arrangement ensures improved cooling of the magnets compared to the conventional rotor design in that they are cooled more evenly over the entire volume of the rotor element. It is thus possible to use less expensive magnet material due to lower temperature levels.
  • the rotor can be used at higher temperatures. Due to the increase in the magnetic flux and the overall higher thermal utilization, 15% of the total length of the rotor element that guides the magnetic field can also be saved. This leads to significant cost and weight savings compared to the conventional rotor design. In other words, this also means that compared to the conventional rotor design, a higher moment can be generated with the same construction volume. This increases the torque density by 15%. This allows for a whole new level of flexibility in terms of rotor design. At the same time, the overall yoke height can be reduced compared to the conventional rotor design.
  • the partial laminated cores can be easily mounted on the shaft, with axial and radial movement play between the partial laminated cores and the shaft being ensured in the assembled state, which, for example, thermal changes in length and / or manufacturing tolerances can be compensated.
  • a through-opening extending in the axial direction, in particular filled with a casting material, is formed, which in particular has a triangular cross-section.
  • Such transit Openings advantageously lead to a further concentration of flux.
  • Each partial laminated core preferably has a large number of stacked electrical laminations and two non-magnetic end plates which are mechanically clamped together, the permanent magnets being pushed into receiving spaces formed by recesses provided in the electrical laminations and fixed in them with a casting material.
  • the mutually facing free ends of two receiving spaces forming a V-arrangement are connected to one another via an isolated cavity through which a clamping bolt is preferably also guided. This eliminates the need for separate insulation of the clamping bolt during production, which is required with the conventional rotor design, since it is now insulated directly when the permanent magnets are cast. One work step is saved accordingly.
  • cover plates are provided which, forming a dovetail-like connection, are pushed onto the shaft in a form-fitting manner in the axial direction, rest against an axial outer partial laminated core and are pressed against the corresponding partial laminated core by means of springs supporting stops axially fixed to the shaft.
  • the stops can be, for example, plate elements shaped like ring segments, which are inserted into a circumferential groove formed on the outer circumference of the rotor.
  • the individual stops are advantageously connected to one another to form a closed ring in order to improve the fatigue strength under vibration stress.
  • the stops can be connected, for example, via screw or rivet connections.
  • the springs can be coil springs, for example, which are pushed onto guide pins that protrude outwards from the cover plates and engage in receiving openings provided on the stops. In this way a simple structure is achieved.
  • each guide pin is hollow or is formed by two pieces of pipe with a semicircular cross section, which are formed laterally on cover plates arranged adjacent to one another, the partial laminated cores and the end plates being provided with cooling channel recesses, which are positioned in the axial direction aligned with the guide pins .
  • cooling air can be introduced into the cooling channel recesses or guided out of them.
  • the overall efficiency is improved by the provision of cooling channels.
  • blind holes extending radially inward are provided on the outer circumference of the shaft, into which spring elements are inserted, which press directly or indirectly via pressure bolts radially outwards against clamping wedges, which in turn press against press an associated partial laminated core, wherein the clamping wedges are preferably pushed axially into clamping wedge receiving grooves, which are formed in the partial laminated cores, and are advantageously guided axially in these.
  • each partial laminated core is provided with a single, centrally arranged clamping wedge receiving groove, as a result of which a simple structure that is inexpensive to produce is achieved.
  • Baffles are advantageously arranged in the area of the stops, which are positioned in such a way that they form a radial fan, the baffles preferably being at least partially connected to the stops.
  • Each partial laminated core is preferably coated at least circumferentially, in particular on all sides, with a metallic layer. tet, wherein the metallic layer preferably completely covers the partial laminated core. Thanks to such a metallic coating, the heat dissipation of the partial laminated cores to the outside is significantly improved, which leads to a reduction in the maximum temperature of the partial laminated cores during rotor operation. Due to the lower temperature level, significantly cheaper permanent magnets in a lower temperature class can be used. Alternatively, the rotor can be used at higher temperatures if the temperature class of the magnet material is not changed.
  • the metallic layer is advantageously a corrosion-resistant layer, in particular a zinc-based metallic layer. In this way, in addition to improved heat dissipation, protection against corrosion for the partial laminated cores can be provided at the same time.
  • Each partial laminated core preferably has a resin-based coating on its radially outer surface, in particular a coating based on epoxy resin, which is preferably applied directly to the metallic layer.
  • a resin-based coating serves as an insulation layer.
  • each partial laminated core is pushed axially onto the shaft and is provided with an anti-friction coating on its radially inner surface, at least in those areas that are in direct contact with the shaft.
  • an anti-friction coating facilitates the assembly of the partial laminated cores while they are being pushed onto the rotor.
  • the anti-friction coating protects the metallic layer arranged underneath during the assembly of the partial laminated cores.
  • each partial laminated core has cooling channels extending axially through the partial laminated core. These are in particular positioned in such a way that they are located outside of the magnetic field generated by the permanent magnets, i.e. in such a way that they do not constrict the magnetic cause field lines.
  • a cooling medium for example cooling air, can be conducted through the cooling channels in order in this way to further reduce the operating temperature, which is associated with the advantages already described above.
  • At least one cooling channel preferably has a turbulator element inserted into it.
  • turbulator elements bring about a noticeable improvement in the cooling performance by swirling the cooling medium.
  • the turbulator element can have a spiral shape, for example, which imparts a twist to the cooling medium flowing through the cooling channel.
  • the turbulator element can be designed as a sheet metal strip bent in a spiral shape, to name just one example.
  • the turbulator element is preferably produced as a separate component, so that it can be inserted into the cooling channel as required or, alternatively, can also be omitted. A fixation of the turbulator element within the cooling channel is not absolutely necessary.
  • cooling channels are provided, which are formed jointly by two adjacently arranged partial laminated cores. In this way, the available surface area of the electrical steel sheets can be optimally utilized.
  • Wall areas of at least some cooling channels are advantageously provided with a structure, in particular with a wave-like structure, through which the surface of the wall areas is enlarged compared to smooth wall areas and the cooling capacity is thus improved.
  • the surface of the shaft is preferably provided with a large number of grooves to increase the surface area, which is also associated with an increased cooling capacity.
  • the present invention creates an electric rotating machine with at least one rotor according to the invention.
  • the present invention creates a nacelle drive with at least one electric rotating machine according to the invention.
  • the present invention creates a watercraft with at least one gondola drive according to the invention.
  • the present invention creates a watercraft with at least one gondola drive according to the invention.
  • FIG. 1 shows a perspective view of a rotor according to one embodiment of the present invention
  • FIG. 2 shows a perspective view of a partial laminated core of the rotor shown in FIG. 1;
  • FIG. 3 shows a front view of the partial laminated core shown in FIG. 2;
  • FIG. 4 shows a rear view of the partial laminated core shown in FIG. 2;
  • FIG. 5 shows a front view analogous to FIG. 4, in which a cover plate has been removed
  • FIG. 6 shows a front view of a section of the rotor shown in FIG. 1;
  • FIG. 7 shows a perspective view of the detail shown in FIG. 6;
  • FIG. 8 shows a perspective longitudinal sectional view of a section of the rotor shown in FIG. 1;
  • FIG. 9 shows a perspective longitudinal sectional view of a detail of an alternative embodiment of a rotor according to the invention.
  • FIG. 10 shows a front view of a section of the rotor shown in FIG. 1, which is designed with a radial fan on its front face;
  • FIG. 11 shows a perspective partial view of the rotor in the area of the radial fan
  • FIG. 12 shows a front view of a partial laminated core according to a second embodiment of the present invention.
  • FIG. 13 shows a perspective view of a turbulator
  • FIG. 14 shows a perspective view of the partial laminated core shown in FIG. 12;
  • FIG. 15 is a longitudinal sectional view of a portion of a shaft according to a second embodiment of the present invention.
  • FIG. 16 shows a schematic side view of a watercraft according to one embodiment of the present invention, which has an electric rotating machine with a rotor shown in FIG.
  • FIG. 1 shows a perspective view of a rotor 1 of an electrical rotating machine, which rotor can be rotated about an axis of rotation 2 .
  • the axis of rotation 2 defines an axial direction A and a circumferential direction U .
  • the rotor 1 comprises a rotor element 3 that guides the magnetic field and is fastened to the outer circumference of a shaft 4 , which in the present case is of hollow design.
  • the rotor element 3 comprises a large number of partial laminated cores 5 and has an outer diameter of preferably at least one meter.
  • the partial laminated cores 5 are distributed uniformly in the circumferential direction U and are present in the axial direction A arranged in four rows.
  • Each partial laminated core 5 comprises a large number of electrical laminations 6 for suppressing eddy currents, which are stacked in the axial direction A and provided with non-magnetic end plates 7 and 8 on the face side.
  • the electrical laminations 6 and the end plates 7 and 8 of a partial laminated core 5 are mechanically clamped together in the axial direction A, in the present case each using two clamping bolts 9 .
  • the identically designed electrical laminations 6 are each provided with four substantially rectangular recesses 10, which together form four cuboid receiving spaces 11 into which permanent magnets 12 are inserted axially, as can best be seen in FIG.
  • the recording rooms 11 and the permanent magnets 12 are each arranged in pairs in a V-shape, with the tip of each V-arrangement pointing radially inwards.
  • the north and south poles are divided in the middle and set in a V-shape at a defined angle.
  • the mutually facing free ends of two receiving spaces 11 forming a V-shaped arrangement are each connected to one another via an axially continuous hollow space 13, through which one of the respective clamping bolts 9 is guided.
  • the gaps between the permanent magnets 12, the clamping bolts 9 and the electrical laminations 6 are cast with a casting material, such as epoxy resin, in order to fix the permanent magnets 12 and the clamping bolts 9 in place.
  • the permanent magnets 12 are made, for example, from samarium-cobalt, neodymium-samarium-cobalt, aluminum-nickel-cobalt, neodymium-iron-boron, samarium-iron-nickel or from a mixture of at least two of the materials.
  • a through opening 14 extending in the axial direction A and also filled with casting material is formed centrally between two permanent magnets 12 of the same polarity forming a V-shaped arrangement, which has a triangular cross section in the present case, with one of the corners pointing radially inwards.
  • Each partial laminated core 5 is positively fitted to the shaft 4 in the axial direction A, forming a dovetail-like connection, as can be seen by looking at FIGS. 3, 4 and 7 together pushed on, axially resiliently secured to this and radially outwardly resiliently biased.
  • the electrical steel sheets 6, like the end plates 7 and 8, are provided on their outer end regions in the circumferential direction U with radially inwardly projecting retaining projections 15, which in the assembled state grip positively around radially outwardly projecting, dovetail-like rotor projections 16, whereby the positive connection is achieved .
  • blind holes 17 extending radially inward are provided on the outer circumference of the shaft 4, as shown in FIGS. are used in the spring elements 18, the zen directly or indirectly via Druckbol 19 press radially outwards against clamping wedges 20, which are axially inserted in the center of the radial inside j edes partial laminated core 5 clamping wedge receiving grooves 21 and guided in them.
  • the pressure exerted by the spring elements 18 is transmitted via the clamping wedges 20 to the respective partial laminated core 5, as a result of which a radially prestressed positioning of the partial laminated core 5 is achieved.
  • FIGS. 8 shows an embodiment in which spring elements 18 in the form of helical springs are inserted in the blind holes and press directly against the respective clamping wedge 20 from below.
  • Figure 9 shows another embodiment, in which spring elements 18 in the form of plate springs are arranged in each of the blind holes 17, which press from below against a pressure bolt 19, which is also positioned in each blind hole 17 and which presses into the blind hole 17 via a screwed captive 22 is fixed radially movable in the blind hole 17.
  • the spring elements 18 press indirectly via the pressure bolts 19 from below against the associated clamping wedges 20 .
  • the axial resilient securing of the laminated cores 5 on the shaft 4 is realized by means of cover plates 23 made of non-conductive material, which, analogous to the laminated cores 5, are pushed onto the shaft 4 with a positive fit in the axial direction A, forming a dovetail-like connection, on a axially outer laminated core 5 adjoining gene and are pressed against the corresponding partial laminated core 5 by means of springs 25 which are supported on stops 24 which are axially fixed on the shaft 4 .
  • the springs 25 are helical springs, which are pushed onto guide pins 27 that protrude outwards from the cover plates 23 and engage in receiving openings 26 provided on the stops 24 .
  • the stops 24 are plate elements shaped like ring segments, which are fixed to the outer circumference of the shaft 4 , for example inserted into a circumferential groove provided on the outer circumference of the shaft 4 and screwed to the shaft 4 .
  • the individual stops 24 can be connected to one another to form a closed ring.
  • the stops 24 can be connected, for example, via screw or rivet connections.
  • the electrical laminations 6 and the end plates 7, 8 are provided laterally with cooling channel recesses 29, which are triangular in the present case, which are positioned in alignment with the guide pins 27 in the axial direction A, with the cooling channel recesses 29 of adjacent partial laminated cores 5 together forming a rhombic cooling channel 50, in which the upper corners are arranged immediately outside of the magnetic field generated by the permanent magnets 12, so that they do not cause constriction of the magnetic field lines.
  • further groove-shaped cooling channels 30 are introduced on the radial inside of the electrical laminations 6 between the retaining projections 15, see FIGS. 3 to 5.
  • FIG. 4 Yet another cooling channel 43 with a triangular cross-section in the present case, which is also positioned outside of the magnetic field, is provided above the clamping wedge 20, see FIG. 6 in this regard.
  • one of the end plates 7 has a contour corresponding to the contour of the electrical laminations 6 without the recesses 10 for the permanent magnets 12 . Due to its shape, it forms a tight cover during the introduction of the casting material.
  • the contour of the other end plate 8 essentially corresponds to the contour of the electrical sheet 6, see FIG. However, this end plate 8 is provided with recesses 31 serving as filling openings for the casting material in the center on the radially outer side and on the outer ends. Furthermore, it also has no recesses 10 for the permanent magnets 12 .
  • cavities 32 through which clamping bolts 9 are guided are larger than the corresponding cavities 13 of the electrical steel sheets 6, so that these also form filling openings.
  • long grooves 33 are introduced, into which assembly devices (not shown in detail) can engage, which are used during the insertion of the permanent magnets 12 into the receiving spaces 11.
  • FIGS. 10 and 11 show a variant of the rotor shown in FIG.
  • the deflection plates 34 can form, for example, a welded construction or assembly units with the stops 24 .
  • the rotor 1 described above is characterized in that thanks to the V-magnet arrangement, in which the north and south poles are divided in the middle and the permanent magnets 12 are set at a defined angle, the individual losses of the permanent magnets 12 are very low. This avoids a physically conditioned critical magnet width in the production of the permanent magnets 12 . Furthermore, the V-arrangement ensures very good cooling of the permanent magnets 12 in the form that they are cooled more evenly over the entire volume of the rotor element 3 guiding the magnetic field. It is thus possible to use inexpensive magnetic material due to low temperature levels. Alternatively, the rotor 1 can be used at higher temperatures.
  • the cooling ducts 30, 47, 50 through which cooling air is conducted during operation, heat that is produced is dissipated well. This also contributes to being able to use inexpensive magnet material as a result of the low temperature levels.
  • the rotor 1 use at higher temperatures. Due to the high magnetic flux and the overall high thermal utilization, the rotor element 3 guiding the magnetic field can be made comparatively short. This leads to low costs. With longer training, a correspondingly high moment can be achieved.
  • the clamping bolts 9 do not have to be insulated separately, since they are insulated directly when the permanent magnets are cast. Also, only comparatively few individual parts and many standard parts are used in the production of the rotor 1, which also contributes to a reduction in costs. Thanks to the fact that the cover plates are made of non-conductive material, there are no losses at this point.
  • FIG. 12 shows a partial laminated core 5 according to a second embodiment of the present invention, the structure of which essentially corresponds to that of the partial laminated cores 5 described above, which is why a renewed description is dispensed with in relation to the identical features.
  • a first difference is that instead of the groove-shaped cooling channels 30 on the underside, circular cooling channels 47 are provided, viewed in cross section, into which turbulator elements 48 shown in FIG. 13 can optionally be inserted, as shown in FIG.
  • the turbulator elements 48 are sheet metal strips bent in a spiral shape and pushed axially into the cooling channels 47 . Such turbulator elements 48 improve the cooling of the laminated core packs 5 .
  • each partial laminated core 5 is coated on all sides with a metallic layer 44, as indicated only schematically by a dashed line in FIG.
  • the metallic layer 44 is in particular in particular a corrosion-resistant layer, for example a zinc-based metallic layer. Thanks to the metallic layer 44, heat dissipation is optimized and at the same time effective protection against corrosion is created.
  • each partial laminated core 5 comprises a resin-based, in particular epoxy-resin-based coating 45 on its radially outer surface, which is represented schematically by a dash-dot line and is preferably applied directly to the metallic layer 44 .
  • each partial laminated core 5 is provided with an anti-friction coating 46, shown schematically as a solid line, at least in those areas that are in direct contact with the shaft 4, which makes it easier to assemble the partial laminated core 5 on the shaft 4.
  • the anti-friction coating 46 protects the metallic layer 44 arranged underneath from damage. It should be understood that the metallic layer 44, the resin-based coating 45, and the lubricating coating 46 are each optional.
  • FIG. 15 shows a section of a shaft 4 according to an alternative embodiment, the surface of which is provided with a large number of grooves 49 in order to increase the cooling capacity by enlarging the surface here as well.
  • the grooves 49 can have a depth of between 0.5 and 1 mm, for example.
  • the bottom of the groove should be rounded, for example with a radius in the range of 0.3 mm or the like.
  • FIG. 16 shows a watercraft 36 with a gondola drive 37 .
  • the watercraft 36 is designed as a ship or alternatively as a submarine.
  • the nacelle drive 37 is located below the water surface 41 and has a driving electric rotating machine 38 which drives a propeller 42 .
  • the electric rotating machine 38 can be operated with a power of at least one megawatt, is designed as a permanently excited synchronous machine and includes a stator 39 and a rotor 1 according to the invention, as has been described above. Between the stator 39 and the rotor 1 a gap 40 is formed, which in the present case is designed as an air gap.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

La présente invention concerne un rotor (1) pour une machine électrique tournante (38), comprenant un arbre (4) et un élément de rotor annulaire, conducteur de champ magnétique (3), qui est fixé à la périphérie externe de l'arbre (4), se présente sous la forme d'un empilement de tôles et maintient une pluralité d'aimants permanents (12) le long de la périphérie de l'élément de rotor. La présente invention concerne également une machine tournante électrique comprenant au moins un rotor de ce type, un entraînement de capsule comprenant au moins une machine tournante électrique de ce type, et une embarcation nautique comprenant au moins un entraînement de capsule de ce type.
PCT/EP2022/070647 2021-09-27 2022-07-22 Rotor pour une machine électrique tournante, machine électrique tournante, entraînement de capsule et embarcation nautique WO2023046332A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021210755.9 2021-09-27
DE102021210755.9A DE102021210755A1 (de) 2021-09-27 2021-09-27 Rotor für eine elektrische rotierende Maschine, elektrische rotierende Maschine, Gondelantrieb und Wasserfahrzeug

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WO2023046332A1 true WO2023046332A1 (fr) 2023-03-30

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CH431687A (de) * 1966-02-21 1967-03-15 Bbc Brown Boveri & Cie Lösbare Verbindung für einen Polradkranz auf dem Radstern einer grossen vertikalachsigen elektrischen Maschine
EP2315339A1 (fr) * 2009-10-22 2011-04-27 Siemens Aktiengesellschaft Travée et procédé de fabrication d'une travée d'une machine électrique
EP3297129A1 (fr) * 2016-09-14 2018-03-21 Siemens Aktiengesellschaft Rotor de machine rotative électrique
EP3629446A1 (fr) 2018-09-26 2020-04-01 Siemens Aktiengesellschaft Rotor pour une machine rotative électrique à refroidissement et flux magnétique améliorés
WO2021019673A1 (fr) * 2019-07-30 2021-02-04 三菱電機株式会社 Moteur, compresseur et climatiseur

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FI117458B (fi) 2004-05-27 2006-10-13 Abb Oy Sähkökoneen roottori
EP2645537B1 (fr) 2012-03-30 2019-07-31 GE Renewable Technologies Wind B.V. Rotor à aimant permanent
DE102013200476A1 (de) 2013-01-15 2014-02-27 Siemens Aktiengesellschaft Permanenterregte Synchronmaschine mit einem Rotor mit Permanentmagneten und Verfahren zur Herstellung derartiger Maschinen bzw. Rotoren
EP2790297B1 (fr) 2013-04-08 2017-08-02 Siemens Aktiengesellschaft Rotor pour une machine électrique
DE102016000985A1 (de) 2016-01-29 2016-09-29 Daimler Ag Verfahren zum Herstellen einer elektrischen Maschine und elektrische Maschine
DE102016218872A1 (de) 2016-09-29 2018-03-29 Siemens Aktiengesellschaft Kühlung eines elektrischen Gondelantriebs
US20180287439A1 (en) 2017-03-29 2018-10-04 Ford Global Technologies, Llc Permanent magnet electric machine
JP7063637B2 (ja) 2018-01-24 2022-05-09 トヨタ自動車株式会社 回転電機のロータ
JP7056743B2 (ja) 2018-08-16 2022-04-19 三菱電機株式会社 回転電機
DE102019204960A1 (de) 2019-04-08 2020-10-08 Audi Ag Rotor für eine elektrische Maschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH431687A (de) * 1966-02-21 1967-03-15 Bbc Brown Boveri & Cie Lösbare Verbindung für einen Polradkranz auf dem Radstern einer grossen vertikalachsigen elektrischen Maschine
EP2315339A1 (fr) * 2009-10-22 2011-04-27 Siemens Aktiengesellschaft Travée et procédé de fabrication d'une travée d'une machine électrique
EP3297129A1 (fr) * 2016-09-14 2018-03-21 Siemens Aktiengesellschaft Rotor de machine rotative électrique
EP3629446A1 (fr) 2018-09-26 2020-04-01 Siemens Aktiengesellschaft Rotor pour une machine rotative électrique à refroidissement et flux magnétique améliorés
WO2021019673A1 (fr) * 2019-07-30 2021-02-04 三菱電機株式会社 Moteur, compresseur et climatiseur

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