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WO2014117881A1 - Machine à champ tournant à induit extérieur, en particulier de construction modulaire - Google Patents

Machine à champ tournant à induit extérieur, en particulier de construction modulaire Download PDF

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Publication number
WO2014117881A1
WO2014117881A1 PCT/EP2013/073274 EP2013073274W WO2014117881A1 WO 2014117881 A1 WO2014117881 A1 WO 2014117881A1 EP 2013073274 W EP2013073274 W EP 2013073274W WO 2014117881 A1 WO2014117881 A1 WO 2014117881A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
induction machine
stator
machine according
housing
Prior art date
Application number
PCT/EP2013/073274
Other languages
German (de)
English (en)
Inventor
Thomas Leiber
Original Assignee
Cpm Compact Power Motors Gmbh
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 Cpm Compact Power Motors Gmbh filed Critical Cpm Compact Power Motors Gmbh
Publication of WO2014117881A1 publication Critical patent/WO2014117881A1/fr

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
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2786—Outer rotors
    • H02K1/2787—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/2789—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2791—Surface mounted magnets; Inset magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H02K11/33—Drive circuits, e.g. power electronics
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • H02K16/04—Machines with one rotor and two stators
    • 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
    • H02K2213/12—Machines characterised by the modularity of some components

Definitions

  • Rotary field machine with external rotor in particular in modular design.
  • the invention relates to a rotating field machine with external rotor, according to the preamble of claim 1.
  • the control electronics are increasingly combined with the motor, especially at high power in low-voltage applications to the
  • the housing can be realized much easier with an internal rotor motor.
  • External rotor motors the following disadvantages: a) stator of the external rotor motor can be wound hard, b) external rotor motors usually have a thermal problem, since heat is generated primarily in the interior of the engine (in the wound stator) and can therefore be dissipated poorly (long heat path) c Rotors of external rotor motors are only supported on one side and therefore limited by the centrifugal load in length, while
  • a brushless external rotor motor with integrated electronics in the above-mentioned embodiment is shown as a fan drive.
  • the rotor of the motor is connected to a fan wheel, the electronics are integrated with the stator of the electric motor.
  • a compact unit can be built.
  • the disadvantage of such a construction is that the rotor is open and can be attracted to the rotor via the air flow and the attractive force of the magnets, in particular when permanent magnets are used in the rotor, and thus can block the air gap between the stator and rotor. This can lead to a failure of the engine and is not allowed, especially for traction drives for safety reasons.
  • stator Standard winding technology to achieve a high degree of copper filling. This is achieved by the fact that the stator is designed as a strip and can be bent flexibly and thus when winding the stator, for example with a needle winder almost the space between the stator teeth can be completely filled with copper. This problem is solved a).
  • the outer rotor is further developed in such a way that the excitation coils of the inner stator are encapsulated with a material of high thermal conductivity and spaced at a small distance from the stator flange.
  • the rotor is made of plastic and has inlaid magnets and an inserted laminated core. By inserting the laminated core, the losses in the rotor can be reduced, whereby the rotor has low temperatures and thus can be made of plastic.
  • the heat can be dissipated well.
  • This disadvantage b) of the external rotor motor is eliminated.
  • the invention is based on the object, a cost-effective
  • the task could be in the high voltage range with a
  • Winding number also the winding technique is very complex, since thick wires must be used in low-induction machines.
  • Power scaling can be from o. For physical reasons, therefore, only by an increase in diameter, which excludes the use of a sheet metal section.
  • An internal rotor motor is made of o. Reasons therefore for one
  • Torque request can be covered according to the invention by one or two coupled rotors with a Statorstanzblechrough.
  • the motor is advantageously modular and characterized in particular in that it consists of one or two stator / flange assemblies and a housing part takes over the function of the electronics and motor housing and air cooling by ribbing.
  • a housing part takes over the function of the electronics and motor housing and air cooling by ribbing.
  • Stator modules with separate punched grids and connections to the electronics which helps to increase inductance and increase performance.
  • Stator with punched grid and flange is an assembly in which the coils are positioned at a small distance from the radially occidentalden part of the flange and with a material with good heat conduction properties in particular (resins with material admixed with thermally conductive elements such as boron / nitride) potted or im Duroplastherstell compiler is encapsulated.
  • the rotor of the motor consists of a preferably deep-drawn
  • Rotor base carrier which formed at one end radially outwardly formed and U-shaped (axial extent in two directions with two
  • Rotor base are these, form-fitting z.
  • both rotors are additionally stiffened by the connections, as they can support each other and the motor can be scaled in length in addition to a one-sided rotor of an external rotor motor.
  • the contacting takes place in the flange region of the stator flange assembly, where a stamped grid is arranged, preferably via a screw connection with a circuit board of the power electronics.
  • the power electronics are modular, i. in the double-rotor design (FIG. 1), two modules are used, with the single rotor only one module.
  • the power electronics has a separate power and control part, wherein the power unit
  • This motor can be equipped with single rotor and double rotor with the same equipped motherboard of the power unit.
  • Figure 1 shows a longitudinal section (only the upper half) shown) by a first embodiment of a rotating field machine with double stator or double rotor;
  • Figure 2 is a longitudinal section (only the upper half) shown) by a second embodiment of a rotating field machine with a simple stator or rotor;
  • Figure 2a is a detail view of a rotor carrier part.
  • 1 shows an embodiment of a rotating field machine according to the invention with an external rotor with two flange-stator assemblies and a double rotor in the H-structure or double-T-carrier structure is shown.
  • the illustrated induction machine has a first (left)
  • a continuous motor shaft 8 is arranged in bores of Statormiker.
  • bearings 10, 12 are provided on the outside of the stator carriers 2 and 4 in corresponding recesses, in particular ball bearings for direct transmission of high radial forces.
  • the bearings 10, 12 are arranged in the axial direction far outboard, so that there is a high load capacity by radial forces.
  • the stator beams 4, 10 have flange-like, radially extending, stepped portions 2a, 4a, at least one of which may be provided with cooling fins, one of which is shown and designated 4b.
  • stator supports 2, 4 made of a material with good
  • the excitation coils 14 and 16 are at a short distance to the radially outwardly projecting part 2a, 4a of the stator and are cast with the stator lamination 1.3 and the stator with a material with high thermal conductivity 42 (eg Boron nitride filler) or injection-molded with this.
  • a material with high thermal conductivity 42 eg Boron nitride filler
  • the Applicant can be provided in one embodiment of the invention, that the potting compound, with which the excitation coils are encapsulated or encapsulated, up to the stator, in particular its radial extent, reaching and associated with this over a larger area area are .
  • the heat transfer in the axial direction in the stator and over this over the housing to the outside significantly improved over the prior art, in which the coil ends are arranged relatively far away from the stator.
  • This is further supported by the punched grid carrying the ends of the coil wires or contact pins is displaced radially outwards, so that space is created in the radially inner region and the contact area can be further increased and additionally by a casting material with high
  • Thermal conductivity is used.
  • the punched grid enclosed by the potting compound is connected via contact pins or alternatively contact lugs to the electronics or the printed circuit board and sealed in the region of the stator carrier via potting to the electronics. It is also possible, as in
  • DE102011111667.6 discloses to operate in the engine with oil cooling.
  • the rotor carrier parts 18,19 sit non-rotatably on a central holding portion 8a, 9a of the motor shaft 8. On both sides punched grid 15a, 15b and motor terminals 17a, 17b are provided for power output stage.
  • the lead frames 15a, 15b are arranged radially outboard between the rotor and the housing in order to make room for the end parts of the coils or the encapsulation.
  • the rotor carrier parts 18 and 19 are each U-shaped in longitudinal section, have a bottom wall 18a, 19a, and two cylindrical axially extending walls or sections 18b, 19b and 18c, 19c. in the End portion, the support members are formed radially outwardly 18d, 19d and stepped in the middle region 18e and 19e optionally inward.
  • the support structure is very resilient, especially for radial forces due to high speeds and magnetic forces.
  • Carrier parts is advantageously used a ferromagnetic material and chosen as a manufacturing process a thermoforming process.
  • the rotor carrier parts are arranged adjacent to one another in the radial section 18a, 19a and connected to one another in this area.
  • 19a not shown fan elements can be attached.
  • these can also be axial bores through the rotor carrier parts 18, 19.
  • axial channels can be designed by the stator 2 and 4, so that the air is sucked in on one end face and is guided on the other end side of the engine. These channels can also be deflected radially, so that the air in the engine is circulated through the rotor area.
  • laminated cores 21a, 21b extending legs of the support members are laminated cores 21a, 21b arranged, which can be designed appropriately as a revolving metal tube.
  • the laminated cores or sheet metal tubes extend axially over the length of the carrier parts.
  • fragmented permanent magnets 20a, 20b mounted and connected to the sheet metal tube in particular by means of suitable adhesive.
  • the individual magnetic elements are each arranged in a row axially one behind the other, wherein a plurality of such rows are distributed over the circumference of the rotor with gaps.
  • the magnets are glued to the laminated cores or sheet metal tubes on the surface or inserted into the sheet metal tube.
  • the laminated cores are shrunk into the rotor carrier parts and pressed.
  • the laminated core or sheet metal tube and the magnets can be arranged or inserted in accordance with a tool in the manufacture of the rotor and, if necessary, be encapsulated with plastic together with the fan elements described above.
  • the encapsulation is in particular two-sided, so that the magnets and rotor on the inside / outside are protected against corrosion.
  • the injection-molded ribbing produced in addition to the radial Forming the rotor carrier parts further reinforce the rotor and replace or supplement the radial deformation of the rotor in the end region 18d, 19d.
  • the housing 6 is in a region of its circumference
  • Flange portions of the stator 2 a and 4 a can be connected to the housing.
  • the housing 6 is expediently produced by the aluminum casting method, likewise preferably the stator supports 2 and 4.
  • a first printed circuit board 30 is arranged on protrusions or sockets 28a, 28b formed by the housing 6, which is used here in particular for the power electronics.
  • This circuit board can be divided into two circuit boards, the two circuit boards are in the area 30a either mechanically separated or separated in a form that the assembly of the circuit boards is identical left and right and with each circuit board, the current is controlled by a stator.
  • This division makes sense, in particular in terms of the modular design, so that the same design for the construction with a stator (see Fig. 2 embodiment)
  • a second circuit board 32 is disposed in a recess of the lid 26 and is here for the
  • Control electronics used Power electronics and control electronics can also be reversed in the arrangement. In an arrangement of
  • Corresponding connectors 34 and 36 for the power or control electronics are shown only schematically and can, for. B. also be arranged axially opposite one another.
  • a sensor target 33 is attached to the shaft and is scanned via a sensor circuit board 35 with preferably Hall element.
  • An oppositely arranged sensor circuit board is connected via a cable 37 via a passage in the flange or radial part 2a of the support member 2 with the lower circuit board 30. Alternatively, the cable can also be led to the upper circuit board and contacted.
  • a stator-flange assembly including a connected rotor and a bearing is preferably first inserted into the housing, in a second step, the second stator-flange assembly is inserted and ultimately the second bearing and the seal 41 is mounted.
  • Flange parts 2a and 4a are then for example via screws 9 with the housing 28th
  • Figure 2 shows an embodiment in which only a stator
  • Figure 2a shows a detailed view of the rotor, wherein along at least a portion of the radially extending portions a rib 7 or the like. Extends to further stiffen the rotor in this area. This stiffening can in particular gem.
  • the external rotor can also be made of plastic, in particular duroplastic, and replace the U-shaped rotor carrier parts completely or partially. In a partial replacement, much of the U-shaped Replaced rotor armature structure by plastic and if necessary reinforcing parts still inserted.
  • plastic variant is in the axially extending leg of the outer rotor is radially outboard a laminated core arranged that can be conveniently designed as a revolving metal tube.
  • the laminated core or sheet metal tube extends axially over the length of the rotor.
  • segmented magnets can be attached and connected to the metal tube in particular by means of suitable adhesive.
  • the individual magnetic elements are each arranged axially one behind the other in a row, wherein a plurality of such rows are distributed over the circumference of the rotor with gaps.
  • Sheet metal stack or sheet metal tube and the magnets are arranged or inserted in accordance with the manufacture of the rotor in a tool and, if necessary, together with the fan elements described above, encapsulated in plastic.
  • the encapsulation is especially on both sides, so that the magnets are protected on the inside against corrosion. Further, in the axial

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

L'invention concerne une machine à champ tournant, comprenant un boîtier dans lequel sont disposés au moins un stator, un rotor, en particulier un rotor à induit extérieur, et un arbre. Selon l'invention, la machine comporte au moins une pièce support (2, 4) sur laquelle sont disposés le stator et au moins un palier (10, 12) et, sur le boîtier (6), un logement (24) pour l'électronique.
PCT/EP2013/073274 2013-02-04 2013-11-07 Machine à champ tournant à induit extérieur, en particulier de construction modulaire WO2014117881A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013101084.9 2013-02-04
DE102013101084.9A DE102013101084A1 (de) 2013-02-04 2013-02-04 Drehfeldmaschine mit Außenläufer, insbesondere in modularer Bauweise

Publications (1)

Publication Number Publication Date
WO2014117881A1 true WO2014117881A1 (fr) 2014-08-07

Family

ID=49546425

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/073274 WO2014117881A1 (fr) 2013-02-04 2013-11-07 Machine à champ tournant à induit extérieur, en particulier de construction modulaire

Country Status (2)

Country Link
DE (1) DE102013101084A1 (fr)
WO (1) WO2014117881A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111699619A (zh) * 2018-02-07 2020-09-22 爱皮加特资本控股有限公司 用于具有轴向散热的旋转场式机器的定子
US20200343780A1 (en) * 2019-04-24 2020-10-29 Black & Decker Inc. Outer rotor brushless motor stator mount
CN113224923A (zh) * 2021-05-06 2021-08-06 安徽朗轶工业自动化系统有限公司 一种小型电机的钢板法兰端盖加工工艺
US20230396130A1 (en) * 2022-06-07 2023-12-07 GM Global Technology Operations LLC Axial flux motor assemblies with integrated power electronics and double-sided cooling

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11794913B2 (en) * 2020-10-20 2023-10-24 The Boeing Company Integrated electric propulsion unit

Citations (9)

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DE69604537T2 (de) * 1995-06-30 2001-03-01 Newport News Shipbuilding And Dry Dock Co., Newport News Abnehmbarer Magnetträger für einen Permanentmagnetmotor
US7683515B2 (en) 2004-06-23 2010-03-23 Heinz Leiber Rotating field machine with bell-shaped rotor
EP2298622A1 (fr) * 2008-07-16 2011-03-23 Mitsubishi Electric Corporation Appareil de direction à assistance électrique et moteur électrique de type à dispositif de commande intégré
EP2330720A1 (fr) * 2009-12-04 2011-06-08 ebm-papst Mulfingen GmbH & Co. KG Moteur électrique à rotor extérieur doté d'un carter et d'un support de conducteurs formés par extrusion
DE102011013662A1 (de) * 2010-03-15 2011-09-15 Ebm-Papst St. Georgen Gmbh & Co. Kg Lüfter
WO2011113522A2 (fr) 2010-03-15 2011-09-22 Ebm-Papst St. Georgen Gmbh & Co. Kg Moteur à rotor extérieur
WO2011133024A2 (fr) * 2010-04-19 2011-10-27 Synervisie B.V. Système de conversion d'énergie à haute intégration pour turbines éoliennes, marémotrices ou hydrauliques
EP2179488B1 (fr) 2007-07-12 2012-05-02 CPM Compact Power Motors GMBH Stator pour moteur électrique
DE102011111667A1 (de) 2011-09-01 2013-03-07 Cpm Compact Power Motors Gmbh Drehfeldmaschine mit Außenläufer

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DE10011956A1 (de) * 2000-03-11 2001-09-27 Mannesmann Sachs Ag Elektrische Maschine sowie Antriebsanordnung für ein Fahrzeug
DE10120414A1 (de) * 2001-04-26 2002-10-31 Zf Sachs Ag Elektrische Maschine
DE202005014301U1 (de) * 2004-10-07 2005-12-15 Ebm-Papst St. Georgen Gmbh & Co. Kg Anordnung zur Förderung von Fluiden
EP1908162B1 (fr) * 2005-07-26 2013-03-20 ebm-papst St. Georgen GmbH & Co. KG Moteur electrique sans balai
DE102010055030A1 (de) * 2010-12-17 2012-06-21 Cpm Compact Power Motors Gmbh Elektromotor mit optimierter Statorstruktur

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69604537T2 (de) * 1995-06-30 2001-03-01 Newport News Shipbuilding And Dry Dock Co., Newport News Abnehmbarer Magnetträger für einen Permanentmagnetmotor
US7683515B2 (en) 2004-06-23 2010-03-23 Heinz Leiber Rotating field machine with bell-shaped rotor
EP2179488B1 (fr) 2007-07-12 2012-05-02 CPM Compact Power Motors GMBH Stator pour moteur électrique
EP2298622A1 (fr) * 2008-07-16 2011-03-23 Mitsubishi Electric Corporation Appareil de direction à assistance électrique et moteur électrique de type à dispositif de commande intégré
EP2330720A1 (fr) * 2009-12-04 2011-06-08 ebm-papst Mulfingen GmbH & Co. KG Moteur électrique à rotor extérieur doté d'un carter et d'un support de conducteurs formés par extrusion
DE102011013662A1 (de) * 2010-03-15 2011-09-15 Ebm-Papst St. Georgen Gmbh & Co. Kg Lüfter
WO2011113522A2 (fr) 2010-03-15 2011-09-22 Ebm-Papst St. Georgen Gmbh & Co. Kg Moteur à rotor extérieur
WO2011133024A2 (fr) * 2010-04-19 2011-10-27 Synervisie B.V. Système de conversion d'énergie à haute intégration pour turbines éoliennes, marémotrices ou hydrauliques
DE102011111667A1 (de) 2011-09-01 2013-03-07 Cpm Compact Power Motors Gmbh Drehfeldmaschine mit Außenläufer

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111699619A (zh) * 2018-02-07 2020-09-22 爱皮加特资本控股有限公司 用于具有轴向散热的旋转场式机器的定子
US11646641B2 (en) 2018-02-07 2023-05-09 IPGATE Capital Holding AG Stator for rotary field machine having axial heat dissipation
CN111699619B (zh) * 2018-02-07 2023-10-24 爱皮加特资本控股有限公司 用于具有轴向散热的旋转场式机器的定子
US20200343780A1 (en) * 2019-04-24 2020-10-29 Black & Decker Inc. Outer rotor brushless motor stator mount
US11670977B2 (en) * 2019-04-24 2023-06-06 Black & Decker Inc. Outer rotor brushless motor stator mount
CN113224923A (zh) * 2021-05-06 2021-08-06 安徽朗轶工业自动化系统有限公司 一种小型电机的钢板法兰端盖加工工艺
US20230396130A1 (en) * 2022-06-07 2023-12-07 GM Global Technology Operations LLC Axial flux motor assemblies with integrated power electronics and double-sided cooling

Also Published As

Publication number Publication date
DE102013101084A1 (de) 2014-08-07

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