WO2008142001A2 - Module de dent pour une pièce primaire de machine électrique - Google Patents

Module de dent pour une pièce primaire de machine électrique Download PDF

Info

Publication number
WO2008142001A2
WO2008142001A2 PCT/EP2008/055983 EP2008055983W WO2008142001A2 WO 2008142001 A2 WO2008142001 A2 WO 2008142001A2 EP 2008055983 W EP2008055983 W EP 2008055983W WO 2008142001 A2 WO2008142001 A2 WO 2008142001A2
Authority
WO
WIPO (PCT)
Prior art keywords
laminated core
tooth module
coil
tooth
permanent magnet
Prior art date
Application number
PCT/EP2008/055983
Other languages
German (de)
English (en)
Other versions
WO2008142001A3 (fr
Inventor
Zeljko Jajtic
Michael Menhart
Original Assignee
Siemens Aktiengesellschaft
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 Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2008142001A2 publication Critical patent/WO2008142001A2/fr
Publication of WO2008142001A3 publication Critical patent/WO2008142001A3/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors
    • H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors
    • H02K41/031—Synchronous motors; Motors moving step by step; Reluctance motors of the permanent magnet type
    • H02K41/033—Synchronous motors; Motors moving step by step; Reluctance motors of the permanent magnet type with armature and magnets on one member, the other member being a flux distributor
    • 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
    • H02K1/17—Stator cores with permanent magnets
    • 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
    • H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/38—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary
    • H02K21/44—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary with armature windings wound upon the magnets
    • 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
    • H02K3/18—Windings for salient poles
    • 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
    • H02K1/14—Stator cores with salient poles
    • H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • H02K1/148—Sectional cores

Definitions

  • Tooth module for a primary part of an electrical machine
  • the invention relates to a tooth module for a primary part of an electrical machine, wherein the tooth module has at least one coil and a permanent magnet. Furthermore, the invention relates to a primary part with one or more tooth modules and an electrical machine with a primary part, which has one or more tooth modules.
  • Electrical machines have a primary part and a secondary part.
  • electrical machines can be constructed in such a way that the primary part and / or the secondary part can have permanent magnets.
  • the primary part is the part which has electrically energizable windings.
  • the primary part is formed for example as a stator of a rotary electric machine or as a moving part of a linear electric machine with a single or multi-phase winding.
  • the secondary part is, for example, a rotor of a rotary electric machine or a fixed part of a linear motor. In linear motors, both the primary part and the secondary part may be formed as a moving part.
  • Stator and rotor for electrical machines generally have a laminated core, consisting of individual electric sheets, wherein the winding or permanent magnets for generating magnetic fields are arranged on the laminated core.
  • the individual sheets for stator and rotor are usually individually punched and joined together, for example via stamping package, welding, stapling or riveting to laminated cores.
  • toothed plates are usually used in winding-carrying stators and / or rotors. In grooves of the laminated core, the winding is arranged.
  • an electric machine is known whose secondary part has no active means, such as energizable windings or permanent magnets, for generating magnetic fields.
  • the primary part energizable windings and permanent magnets, the secondary part having only a tooth structure of, for example, a ferrous material.
  • a tooth module for a permanent magnet excited primary part of an electric machine wherein the tooth module has a permanent magnet and a coil.
  • a primary part of an electrical machine can be modularly constructed.
  • the object of the present invention is to provide a tooth module for an electrical machine, which is designed such that excessive heating of the permanent magnet is avoided.
  • Other objects of the invention are to provide a primary part and an electric machine with such a tooth module.
  • the tooth module according to the invention for a primary part of an electrical machine has at least one coil and a permanent magnet, wherein a thermal contact resistance is formed between the coil and the permanent magnet.
  • a thermal contact resistance or heat transfer resistance arises between at least two different materials or media.
  • the thermal contact resistance is dependent on the heat-transferring surface and the surface condition, the temperature and the contact pressure.
  • the coil and the permanent magnet are thermally decoupled from each other, which ensures that the permanent magnet heats only minimally or to a small extent.
  • the permanent magnet is spared and its life extended.
  • more cost-effective permanent magnets can be used by forming a thermal contact resistance, since now only a slight warming of the permanent magnet occurs.
  • the tooth module has a first laminated core and a second laminated core.
  • Each laminated core has a plurality of individual electrical sheets.
  • the permanent magnet is arranged on the first laminated core and the coil on the second laminated core. Due to the formation of at least two laminated cores, each of which carries a means for generating magnetic fields, a first thermal decoupling of coil and permanent magnet already takes place.
  • the first laminated core and the second laminated core are formed such that the thermal contact resistance between the two laminated cores is present.
  • Such a thermal contact resistance can be formed, for example, by means of a narrow air gap between the permanent magnet-carrying first laminated core and the coil-carrying second laminated core.
  • Such an air gap is at least partially present between the first and second sheet metal package.
  • the air gap is formed so that a thermal contact resistance is formed over the portion in which the permanent magnet and the coil face each other and have a small or small distance from each other.
  • this air gap is formed over as long as possible.
  • the thermal contact resistance can also be formed by means of a thermally and / or electrically insulating material between the first and second laminated core.
  • a thermally and / or electrically insulating material may be plastic, for example.
  • the resulting in operation of the electrical machine heat loss in the coil is derived from the second laminated core carrying the coil.
  • the heat is then dissipated to the surface or to other cooling elements, such as cooling coil, cooling plate, or water cooling via the coil-carrying laminated core.
  • the second laminated core preferably has one or more cooling elements for cooling the coil.
  • a cooling element is for example a cooling tube, wherein the cooling tube, for example, with a cooling medium, for example water, flows through.
  • a cooling medium for example water
  • the tooth module is constructed in several parts. It is the first laminated core and the second laminated core each constructed at least two parts.
  • the first laminated core on which the permanent magnet is arranged, has two laminated core halves, which are arranged perpendicular to a running direction of the primary part next to each other and wherein the permanent magnet between the laminated core halves is also arranged perpendicular to the direction.
  • Such a structure of the first laminated core allows a simple arrangement of the permanent magnet in the tooth module.
  • Permanent magnet can be inserted for example between the laminated core halves.
  • the second laminated core which carries the coil is also constructed at least in two parts, wherein the two laminated core halves are also arranged perpendicular to a direction of the primary part next to each other.
  • the two laminated core halves of the second laminated core are arranged such that in each case a laminated core part of the second laminated core is arranged next to a laminated core part of the first laminated core.
  • the two laminated core halves of the second laminated core abut respectively on the outer sides of the laminated core halves of the first laminated core. Both the first and the second laminated cores could also be constructed in one piece.
  • the tooth module preferably has a fastening groove for attaching the tooth module to a housing of the primary part.
  • a housing part a corresponding counterpart, which is referred to as a sliding block, on, wherein the sliding block engages in the mounting groove of the tooth module.
  • a primary part according to the invention for an electrical machine has one or more tooth modules, which each have a thermal contact resistance between the coil and the permanent magnet.
  • a plurality of tooth modules are preferably arranged side by side in the running direction.
  • any number of tooth modules can be arranged.
  • Tooth modules can be modular build a primary part, whereby various variants can be provided with respect to, for example, the length of a primary part.
  • the electric machine according to the invention has a primary part and a secondary part, wherein the primary part and the secondary part are spaced apart by an air gap.
  • the electric machine in this case has a primary part, which is composed of several tooth modules according to the invention. Since the primary part already has a plurality of active means for generating magnetic fields, the secondary part has no active means for generating magnetic fields, but is merely a toothed structure, for example made of iron.
  • the electric machine is preferably designed as a permanent magnet synchronous linear motor.
  • the primary part is designed as a moving part, wherein the tooth modules according to the invention are arranged next to one another in the direction of the linear motor and essentially form the primary part.
  • Such moving primary parts can be produced inexpensively, since the permanent magnets are present only in the primary part and do not have to be arranged over the entire length of the fixed secondary part.
  • the electrical machine can also be designed as a rotary permanent magnet synchronous motor, wherein the primary part is preferably designed as a fixed part, i. as a stator.
  • FIG. 2 shows a second embodiment of a tooth module according to the invention and
  • FIG. 3 shows a detail of a primary part according to the invention.
  • the tooth module 1 shows a first embodiment of a tooth module 1 according to the invention.
  • the tooth module 1 has a coil 2 and a permanent magnet 3.
  • the coil 2 is preferably designed as a tooth coil, also referred to as a pole coil.
  • the tooth module 1 has the first laminated core 4 and the second laminated core 5.
  • the first laminated core 4 carries the permanent magnet 3.
  • the second laminated core 5 carries the coil. 2
  • the first laminated core 4 is according to the first embodiment of several parts, in particular two parts, constructed.
  • the first laminated core 4 has two laminated core parts 4a, which are divided in a running direction 9 of a linear motor, not shown. Between the two laminated core parts 4a of the permanent magnet 3 is arranged.
  • the permanent magnet 3 is also arranged perpendicular to the running direction 9.
  • the permanent magnet 3 could also be arranged horizontally to the running direction 9 or in any other direction and shape in the tooth module 1 or in the first laminated core 4.
  • the first laminated core 4 could for example also be integrally formed.
  • the two laminated core parts 4a could be connected to one another, for example by means of webs in the region of the end regions of the permanent magnet 3.
  • the second laminated core 5, which carries the coil 2 is constructed in two parts according to this embodiment.
  • the two laminated core parts 5a of the second laminated core 5 are also divided perpendicular to the running direction 9 and arranged next to the laminated core parts 4a.
  • a laminated core part 5a is arranged next to a laminated core part 4a.
  • a laminated core part 5a arranged to the left and right of a laminated core part 4a, so that the laminated core parts 5a 5a enclose the laminated core parts 4a from the outside.
  • the laminations of the laminated cores 4 and 5 are formed such that between these two laminated cores, a thermal contact resistance 6 is present.
  • the thermal contact resistance 6 is realized by means of the air gap 7.
  • the air gap 7 is formed as narrow as possible in order to enable thermal decoupling between coil 2 and permanent magnet 3 with the least possible disturbance of the magnetic fluxes.
  • the second laminated core 5 is formed so that it forms the yoke 13, wherein the laminated core 5 in the region of
  • Jochs 13 directly abuts in a portion of the laminated core parts 4a of the first laminated core 4.
  • the yoke 13 of the second laminated core 5 forms a common conclusion with the laminated core parts 4a.
  • the coil 2 surrounds the second laminated core 5 and lies on two sides completely on the second laminated core 5. This ensures optimal heat transfer from the coil 2 to the second laminated core 5.
  • FIG. 2 shows a second embodiment of a tooth module 1 according to the invention.
  • the tooth module 1 according to FIG. 2 essentially corresponds to the embodiment according to FIG. 1, wherein the second laminated core 5 with its two laminated core parts 5 a has a cooling element, which is designed as a cooling tube 8.
  • the cooling tube 8 is provided for the flow through with a cooling medium, such as water, wherein the two cooling tubes 8 are connected to each other on the outer sides, for example, the front sides of the tooth module in the direction 9.
  • the electric machine 16 is designed as a permanent-magnet synchronous linear motor.
  • the primary part 14 has a plurality of tooth modules 1 according to the invention, which are arranged side by side in the running direction 9 of the primary part 14.
  • the tooth modules 1 are arranged on a housing part 11.
  • the housing part 11 has, at a predeterminable distance, sliding blocks 12, by means of which the toothed modules 1 are fastened to the housing part 11.
  • the tooth module 1 is held by means of the sliding block 12, which engages in the fastening groove 10 of the tooth module 1.
  • a tooth module 1 is inserted transversely to the direction of movement 9 of the primary part 14.
  • the tooth modules 1 are arranged such that in each case the second laminated cores 5 abut one another, so that optimum grooves for receiving the coils 2 are provided.
  • the length of the primary part 14 can be made variable. It can toothed modules 1 are strung together to a desired length. In this case, the tooth modules 1 can be lined up in any desired number and direction, whereby a modular construction of a primary part 14 is provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electromagnetism (AREA)
  • Linear Motors (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

Module de dent (1) pour une pièce primaire (4) de machine électrique, qui comporte au moins une bobine (2) et un aimant permanent (3), une résistance de contact thermique (6) étant située entre la bobine (2) et l'aimant permanent (3).
PCT/EP2008/055983 2007-05-21 2008-05-15 Module de dent pour une pièce primaire de machine électrique WO2008142001A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007023606.0 2007-05-21
DE102007023606A DE102007023606A1 (de) 2007-05-21 2007-05-21 Zahnmodul für ein Primärteil einer elektrischen Maschine

Publications (2)

Publication Number Publication Date
WO2008142001A2 true WO2008142001A2 (fr) 2008-11-27
WO2008142001A3 WO2008142001A3 (fr) 2009-05-07

Family

ID=39917182

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/055983 WO2008142001A2 (fr) 2007-05-21 2008-05-15 Module de dent pour une pièce primaire de machine électrique

Country Status (2)

Country Link
DE (1) DE102007023606A1 (fr)
WO (1) WO2008142001A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012130814A3 (fr) * 2011-04-01 2012-11-22 Wobben Properties Gmbh Épanouissement polaire
CN108199507A (zh) * 2018-03-28 2018-06-22 郑州轻工业学院 一种模块化电机定子结构
WO2021092118A1 (fr) * 2019-11-07 2021-05-14 Hyperloop Technologies, Inc. Actionneur électromagnétique de production de force

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1238273A (fr) * 1959-05-06 1960-08-12 Normacem Sa Inducteur pour machines électriques tournantes
WO1992012567A1 (fr) * 1990-12-28 1992-07-23 Toeroek Vilmos Moteur electrique
US5821661A (en) * 1996-06-03 1998-10-13 Hilti Aktiengesellschaft Electromotor
WO2000007285A1 (fr) * 1998-07-31 2000-02-10 Magnetic Revolutions Limited, L.L.C. Procedes permettant de commander la trajectoire d'un flux magnetique emis par un aimant permanent et dispositifs faisant appel a cet aimant permanent
US6522035B1 (en) * 2001-07-05 2003-02-18 Anorad Corporation Forcer and associated three phase linear motor system
US20040032170A1 (en) * 2000-11-21 2004-02-19 Masafumi Tamai Linear motor
WO2007033857A1 (fr) * 2005-09-22 2007-03-29 Siemens Aktiengesellschaft Module de dent pour partie primaire d'une machine electrique excitee par des aimants permanents

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH308095A (de) * 1952-03-11 1955-06-30 R Prof Jaeger Erwin Elektrische Maschine mit Vorrichtung zur Kühlung des geschichteten Magneteisenkörpers.
JPH02142332A (ja) * 1988-11-22 1990-05-31 Sharp Corp 電気機器
EP0723330B1 (fr) * 1995-01-23 1998-01-07 Siemens Aktiengesellschaft Machine synchrone du type à jambe
DE102004045992A1 (de) 2004-09-22 2006-04-06 Siemens Ag Elektrische Maschine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1238273A (fr) * 1959-05-06 1960-08-12 Normacem Sa Inducteur pour machines électriques tournantes
WO1992012567A1 (fr) * 1990-12-28 1992-07-23 Toeroek Vilmos Moteur electrique
US5821661A (en) * 1996-06-03 1998-10-13 Hilti Aktiengesellschaft Electromotor
WO2000007285A1 (fr) * 1998-07-31 2000-02-10 Magnetic Revolutions Limited, L.L.C. Procedes permettant de commander la trajectoire d'un flux magnetique emis par un aimant permanent et dispositifs faisant appel a cet aimant permanent
US20040032170A1 (en) * 2000-11-21 2004-02-19 Masafumi Tamai Linear motor
US6522035B1 (en) * 2001-07-05 2003-02-18 Anorad Corporation Forcer and associated three phase linear motor system
WO2007033857A1 (fr) * 2005-09-22 2007-03-29 Siemens Aktiengesellschaft Module de dent pour partie primaire d'une machine electrique excitee par des aimants permanents

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012130814A3 (fr) * 2011-04-01 2012-11-22 Wobben Properties Gmbh Épanouissement polaire
JP2014514902A (ja) * 2011-04-01 2014-06-19 ヴォッベン プロパティーズ ゲーエムベーハー ポールシュー
KR101546175B1 (ko) 2011-04-01 2015-08-20 보벤 프로퍼티즈 게엠베하 자극편
CN108199507A (zh) * 2018-03-28 2018-06-22 郑州轻工业学院 一种模块化电机定子结构
CN108199507B (zh) * 2018-03-28 2019-06-25 郑州轻工业学院 一种模块化电机定子结构
WO2021092118A1 (fr) * 2019-11-07 2021-05-14 Hyperloop Technologies, Inc. Actionneur électromagnétique de production de force
WO2021092106A1 (fr) * 2019-11-07 2021-05-14 Hyperloop Technologies, Inc. Machine électromagnétique produisant une force
US11848595B2 (en) 2019-11-07 2023-12-19 Hyperloop Technologies, Inc. Channel segment for a track of a mover device
US11936271B2 (en) 2019-11-07 2024-03-19 Hyperloop Technologies, Inc. Replaceable windings for an electromagnetic machine
US11962212B2 (en) 2019-11-07 2024-04-16 Hyperloop Technologies, Inc. Electrical windings for a low pressure environment

Also Published As

Publication number Publication date
WO2008142001A3 (fr) 2009-05-07
DE102007023606A1 (de) 2008-12-04

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