WO2011129773A1 - Module d'assemblage de bobine de moteur linéaire reconfigurable - Google Patents

Module d'assemblage de bobine de moteur linéaire reconfigurable Download PDF

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Publication number
WO2011129773A1
WO2011129773A1 PCT/SG2011/000150 SG2011000150W WO2011129773A1 WO 2011129773 A1 WO2011129773 A1 WO 2011129773A1 SG 2011000150 W SG2011000150 W SG 2011000150W WO 2011129773 A1 WO2011129773 A1 WO 2011129773A1
Authority
WO
WIPO (PCT)
Prior art keywords
coil assembly
module
linear motor
assembly module
coil
Prior art date
Application number
PCT/SG2011/000150
Other languages
English (en)
Inventor
Choon Wan Ho
Yuli Ke
Original Assignee
Pba (S) Pte Ltd
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 Pba (S) Pte Ltd filed Critical Pba (S) Pte Ltd
Priority to SG2012076972A priority Critical patent/SG184899A1/en
Publication of WO2011129773A1 publication Critical patent/WO2011129773A1/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
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/47—Air-gap windings, i.e. iron-free windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225—Terminal boxes or connection arrangements

Definitions

  • This invention relates to linear motors in which the moving coil assemblies are re- configurable and translates to linear thrust force when the coil assembly is incorporated into the magnet assembly.
  • this invention relates to a moving coil assembly with modular cascading ability and the method for coil setting.
  • the invention relates generally to linear motors utilizing multiple coils connected in succession to increase coil assembly length and hence increases the motor rating.
  • Ironless linear motors comprises of dual row of periodic alternating permanent magnets embedded onto two parallel ferromagnetic plates with base plate to form the 'U' channel magnet track and the poly phase coil assembly inserted into the channel, shown in Figure 2.
  • a linear force is produced which will move either the magnet track or the coil assembly.
  • the magnetic track can be stationary and the coil moving or vice-versa.
  • US Patent No. 4151447 issued to von der Heide, which describes the construction
  • US Patent No. 34647 issued to Beakley, which describes an alternative coil construction with overlapping coil and use of heat sinking medium such as epoxy and aluminum plate to dissipate heat.
  • the more commonly used method to allow replacement of cable length for example is to provide connecting cables at one end of the coil assembly as seen in US Patent No. 7170204, such that cable can be readily extended using mating connectors. Connectors can also be embedded onto one end of the coil assembly, eliminating the presence of cables dangling out from the coil assembly.
  • the present invention comprises of a plurality of coil assembly module units and inserted into a magnet track for linear motor operation.
  • Each coil assembly module in FIG. 1 features electrical connectors at both ends to electrically connect the plurality of coil assembly module units Jo achieve re-configurable capability.
  • the connectors . jare used for electrically linking up all the coil assembly modules windings to become parallel or series connected to the motor voltage bus.
  • the connectors serve to connect respective temperature sensors or thermostats found in each motor coil assembly module together to offer thermo-cutoff protection to all cascaded coil assembly modules. Connector at one end can then be connected with the matching connector terminal to the flexible motor cable.
  • each coil assembly module in FIG. 1 features assembly grooves to facilitate multiple coil assembly modules to be seamlessly cascaded.
  • the spacing between the individual coils is space at 60" electrical degrees interval, as shown in FIG. 2.
  • the edge at both ends will have sufficient space of 30" electrical degrees for the adjacent coil assembly module to overlap to form the groove joint.
  • the larger spacing interval has the advantage of allowing sufficient tolerance control such that when multiple units of coil assembly module are cascaded, any offset displacement is kept to minimal and non-cumulative.
  • the larger spacing interval will provide improved insulation between individual coils in 220V high voltage applications.
  • the concentrate-wound coils are disposed in a row at equal interval of 120° electrical degrees, forming two sets of Phase A, Phase B, Phase C coils.
  • the winding direction of the first set is such that A-phased coil is wound in the clockwise direction, B-phased coil is wound in the counter-clockwise direction, C-phased coil is wound in the clockwise direction.
  • the winding direction of the second set is such that A-phased coil is wound in the counter-clockwise direction, B-phased coil is wound in the clockwise direction, C-phased coil is wound in the counter-clockwise direction.
  • a total of six coils are required to form one coil assembly module of the re-configurable linear motor.
  • each coil assembly module the connectors are embedded and sealed at both ends during the manufacturing process. Prior to sealing, the end pins of each connector are soldered onto both ends of a PCB board (FIG. 3A and 3B).
  • This PCB board is designed to connect each individual motor phase lead wires as a three-phase Star connection.
  • the person skilled in the art can have the PCB can be designed to achieve Delta connection.
  • the PCB also includes temperature sensors or thermostats to be connected for thermo-cutoff protection.
  • the coils are then encapsulate-molded using thermally conductive epoxy material and pressed into shape or using injection-molding process.
  • the final process involves embedding the connectors PCB to the molded coil and sealed with a coil assembly cap.
  • Each coil assembly module is capable of running singularly, or re-configured as multiple units of coil assembly modules by using the same coil assembly module for cascading.
  • the coil assembly can allow for a higher input current than its rating without causing over-heating. This is because there will be a long cooling period when the coil is not energized whenever the moving magnet assembly is not in close proximity.
  • Fully modular and re-configurable coil assembly module allows partial replacement of damaged coil assembly modules and replacement of cables and parts, reducing wastage.
  • FIG. 1 is the perspective view of the re-configurable linear motor coil assembly module of the first embodiment of the invention and illustrates the features necessary to achieve full modular capability.
  • FIG. 2 shows the coil layout view of one coil assembly module of the invention and describes the coil spacing and edge spacing in electrical degrees.
  • FIG. 3 shows the doubled layer PCB artwork that details the coil winding connections with the connector terminals at the edges of the board.
  • FIG. 3A shows the top layer artwork routing.
  • FIG. 3B shows the bottom layer artwork routing.
  • FIG. 4 is the perspective view of the ironless linear motor design comprises of a coil assembly unit and magnet track.
  • FIG. 5 shows the perspective view of the re-configurable linear motor in the second embodiment.
  • FIG. 1 is the perspective view of the of the re-configurable linear motor coil assembly module of the first embodiment of the invention and illustrates the features necessary to achieve full modular capability.
  • a single coil assembly module is designated as 1.
  • each coil assembly module 1 in FIG. 1 features electrical connectors 2 at both ends to electrically connect the plurality of coil assembly module units to achieve re-configurable capability.
  • Connectors 2 are used for electrically linking up all the coil assembly modules windings to become parallel or series connected to the motor voltage bus.
  • Connectors 2 also serve to connect respective temperature sensors or thermostats found internally in each coil assembly module together to offer thermo-cutoff protection to all cascaded modules 1.
  • Connector 2 at one end can then be connected with the matching connector terminal to the flexible motor cable.
  • locking mechanism 4 is used for all cascading joints. Locking mechanism 4 will prevent the series of interlocking coil assembly modules 1 to disengage during motion and mechanical stress.
  • Each coil assembly module 1 in FIG. 1 features assembly grooves 3 to facilitate identical coil assembly modules 1 to be seamlessly cascaded.
  • the spacing between the individual coils (7A, 7B, 7C, 8A, 8B, 8C) is spaced at 60° electrical degrees interval, as shown in FIG. 2.
  • the groove edge 3 at both ends will have sufficient space of 30° electrical degrees for the adjacent coil assembly module 1 to overlap to form the groove joint.
  • the larger spacing interval has the advantage of allowing sufficient tolerance control such that when multiple units of coil assembly modules are cascaded, any offset displacement is kept to minimal and non-cumulative.
  • the groove edge 3 serves to strengthen the mechanical structure by having the contact surface along the entire edges of the coil assembly module.
  • the concentrate-wound coils (7A, 7B, 7C, 8A, 8B, 8C) in FIG. 2 are disposed in a row at equal interval of 120 ° electrical degrees, forming two sets of Phase A, Phase B, Phase C coils.
  • the individual coils will carry the respective current in terms of electrical degree as:
  • the winding direction of the first set (7A, 7B, 7C) is such that A-phased coil 7A is wound in the clockwise direction, B-phased coil 7B is wound in the counter-clockwise direction, C-phased coil 7C is wound in the clockwise direction.
  • the winding direction of the second set (8A, 8B, 8C) is such that A-phased coil 8A is wound in the counter-clockwise direction, B- phased coil 8B is wound in the clockwise direction, C-phased coil 8C is wound in the counterclockwise direction.
  • the individual set of coil lead wires are reinforced with conducting pins 9, 10, 11, 12, 13, 14 for connections. A total of six coils are required to form one coil assembly module 1 of the re-configurable linear motor.
  • a PCB board 9 in FIG. 3 is designed to connect each individual motor phase lead wires as a three-phase Star configuration.
  • the PCB board 9 has a doubled-layer artwork and the front and back routing artwork is shown in FIG. 3A and FIG. 3B respectively.
  • Pin 9 of FIG. 2 is soldered to solder pad 18 of FIG. 3
  • Pin 10 of FIG. 2 is soldered to solder pad 19 of FIG. 3
  • Pin 11 of FIG. 2 is soldered to solder pad 20 of FIG. 3
  • Pin 12 of FIG. 2 is soldered to solder pad 21 of FIG. 3
  • Pin 13 of FIG. 2 is soldered to solder pad 22 of FIG. 3
  • Pin 14 of FIG. 2 is soldered to solder pad 23 of FIG. 3.
  • Terminals 16 and 17 are meant for the pins of the connectors 2 to be inserted.
  • Soldering pad 24 will be soldered with the internal thermal sensor or thermostat inside the coil assembly module 1.
  • the person skilled in the art can have the PCB can be designed to achieve Delta connection.
  • the coils module 1 is then encapsulate-molded using thermally conductive epoxy material and pressed into shape or using injection-molding process.
  • the final process involves sealing the molded coil 1 with a coil assembly cap 5 as illustrated in FIG. 1.
  • the coil assembly cap 5 serves as a mounting medium in which external mechanical assembly will be attached. Attachment is possible using a series of tap holes 6, spaced evenly along the length of the coil assembly cap 5. Tap holes 6 can also be made on the side profile of coil assembly cap 5 for vertical mounting as an option.
  • the coil assembly module 1 is inserted into the magnet track, shown in FIG. 4.
  • the magnet track comprises of dual row of periodic alternating permanent magnets, denoted as 30 and 31.
  • the array of magnets is embedded onto two parallel ferromagnetic plates 26 and 27 with base plate 28 to form the 'U' channel magnet track.
  • Mounting holes 32 are located on both sides of the ferromagnetic plates 26 and 27 and at the bottom of the base plate 28.
  • FIG. 5 shows the perspective view of the re-configurable linear motor in the second embodiment.
  • the magnet track serves as the moving member and coil modular assembly 1 is made stationery, particularly for long travel applications.
  • the present invention differs from the prior art discussed such that a single motor coil assembly spanning the entire length of motion travel becomes infeasible.
  • the present invention combines the fully re-configurable coil assembly module 1 and the appropriate switching controls to trigger the respective coil assembly module segment. With current control switching, the individual coil assembly 1 will not be energized continuously, thus will allow for a higher input current than its rating without causing over-heating which in turn capable of producing a higher output force. There is a long cooling period when the coil is not energized whenever the moving magnet assembly is not in close proximity.
  • each coil assembly module 1 in FIG. 5 features (A) electrical connectors 2 at both ends to electrically connect the plurality of modular coil assembly units to achieve re-configurable capability.
  • Connectors 2 are used for electrically linking up all the coil assembly modules windings to become parallel or series connected to the motor voltage bus.
  • Connectors 2 also serve to connect respective temperature sensors or thermostats found internally in each coil assembly module together to offer thermo-cutoff protection to all the cascaded coil assembly modules 1.
  • Connector 2 at one end can then be connected with the matching connector terminal to the flexible motor cable.
  • locking mechanism 4 is used for all cascading joints.
  • Each coil assembly module 1 in FIG. 5 features assembly grooves 3 to facilitate identical coil assembly modules 1 to be seamlessly cascaded.
  • the spacing between the individual coils (7 A, 7B, 7C, 8A, 8B, 8C) is spaced at 60° electrical degrees interval, as shown in FIG. 2.
  • the groove edge 3 at both ends will have sufficient space of 30 ° electrical degrees for the adjacent coil assembly module 1 to overlap to form the groove joint.
  • the larger spacing interval has the advantage of allowing sufficient tolerance control such that when multiple coil assembly modules are cascaded, any offset displacement is kept to minimal and non-cumulative.
  • the groove edge 3 serves to strengthen the mechanical structure by having the contact surface along the entire edges of the coil assembly module.
  • the coils module 1 in FIG. 5 is then encapsulate-molded using thermally conductive epoxy material and pressed into shape or using injection-molding process.
  • the final process involves sealing the molded coil 1 with a coil assembly cap 5 as illustrated in FIG. 1.
  • the coil assembly cap 5 serves as a mounting medium in which external mechanical assembly will be attached. Attachment is possible using a series of tap holes 6, spaced evenly along the length of the coil assembly cap 5. Tap holes 6 can also be made on the side profile of coil assembly cap 5 for vertical mounting as an option.
  • the coil assembly module 1 is inserted into the magnet track, shown in FIG. 5.
  • the magnet track comprises of dual row of periodic alternating permanent magnets, denoted as 30 and 31.
  • the array of magnets is embedded onto two parallel ferromagnetic plates 26 and 27 with base plate 28 to form the 'U' channel magnet track.
  • Mounting holes 32 are located on both sides of the ferromagnetic plates 26 and 27 and at the bottom of the base plate 28.
  • the magnet track module can be cascaded to increase the output force.
  • only a single coil assembly module 1 needs to be replicated and re-configured to achieve longer stroke.
  • the Third embodiment is a variation of First and Second Embodiment such that the person skilled in the art will note that two extreme edge clearances are half of the coil spacing. This edge spacing can vary without affecting the replicate capability while maintaining the individual coil coils (7A, 7B, 7C, 8A, 8B, 8C) phase displacement of 120° electrical degree.
  • Similar features to those of First and Second Embodiment are present and will not be described further.
  • the present invention allows for air or liquid cooling to be incorporated into the coil capping 5. Cascading of multiple coil assembly modules 1 with this feature can be bought about using appropriate sealant and cooling duct connectors.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Linear Motors (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Windings For Motors And Generators (AREA)

Abstract

La présente invention concerne un procédé plus productif et plus efficace d'assemblage de bobine. La bobine comporte des connecteurs électriques aux deux extrémités et des rainures d'assemblage pour permettre à de multiples modules d'assemblage de bobine d'être cascadés de façon homogène afin d'augmenter la force de sortie. Un seul module d'assemblage de bobine standard nécessite donc d'être produit au lieu de multiples modules de différentes tailles, ce qui permet donc un remplacement localisé d'un module d'assemblage de bobine endommagé quelconque. L'agencement concentré des bobines permet de faciliter la fabrication des bobines et est moins sujet aux dommages par rapport aux bobines fabriquées se chevauchant.
PCT/SG2011/000150 2010-04-16 2011-04-15 Module d'assemblage de bobine de moteur linéaire reconfigurable WO2011129773A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SG2012076972A SG184899A1 (en) 2010-04-16 2011-04-15 Re-configurable linear motor coil assembly module

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SG2010026987A SG175462A1 (en) 2010-04-16 2010-04-16 Re-configurable linear motor coil assembly module
SG201002698-7 2010-04-16

Publications (1)

Publication Number Publication Date
WO2011129773A1 true WO2011129773A1 (fr) 2011-10-20

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012204919A1 (de) * 2012-03-27 2013-10-02 Beckhoff Automation Gmbh Statorvorrichtung für einen linearmotor und lineares transportsystem
CN105814776A (zh) * 2013-11-13 2016-07-27 包米勒公司 电动的驱动系统
US9689712B2 (en) 2012-03-27 2017-06-27 Beckhoff Automation Gmbh Position detection device for a movable element in a drive device
US9997985B2 (en) 2012-03-27 2018-06-12 Beckhoff Automation Gmbh Stator device for a linear motor, and linear transport system
EP3422537A1 (fr) * 2017-06-30 2019-01-02 Etel S.A. Système de bobine et kit modulaire de boîtier pour un système de bobine d'un moteur électrique

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020047323A1 (en) * 2000-03-29 2002-04-25 Shuichi Kawada Linear motor armature
US6622369B1 (en) * 1999-08-13 2003-09-23 Mirae Corporation Method for assembling an armature of a moving coil type linear motor
WO2008003539A1 (fr) * 2006-07-03 2008-01-10 Siemens Aktiengesellschaft Partie primaire pour un moteur électrique linéaire

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6622369B1 (en) * 1999-08-13 2003-09-23 Mirae Corporation Method for assembling an armature of a moving coil type linear motor
US20020047323A1 (en) * 2000-03-29 2002-04-25 Shuichi Kawada Linear motor armature
WO2008003539A1 (fr) * 2006-07-03 2008-01-10 Siemens Aktiengesellschaft Partie primaire pour un moteur électrique linéaire

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10177640B2 (en) 2012-03-27 2019-01-08 Beckhoff Automation Gmbh Stator device for a linear motor and linear transport system
US10181780B2 (en) 2012-03-27 2019-01-15 Beckhoff Automation Gmbh Stator device for a linear motor and linear transport system
DE102012204919A1 (de) * 2012-03-27 2013-10-02 Beckhoff Automation Gmbh Statorvorrichtung für einen linearmotor und lineares transportsystem
US9689712B2 (en) 2012-03-27 2017-06-27 Beckhoff Automation Gmbh Position detection device for a movable element in a drive device
US9997985B2 (en) 2012-03-27 2018-06-12 Beckhoff Automation Gmbh Stator device for a linear motor, and linear transport system
EP2884639A1 (fr) * 2012-03-27 2015-06-17 Beckhoff Automation GmbH Système de transport linéaire
US10103599B2 (en) 2013-11-13 2018-10-16 Baumueller Nuernberg Gmbh Electromotive drive system electronic housing with plug connections for DC voltage supplies, field busses and digital inputs and outputs
CN105814776B (zh) * 2013-11-13 2018-12-21 包米勒公司 电动的驱动系统
CN105814776A (zh) * 2013-11-13 2016-07-27 包米勒公司 电动的驱动系统
US20190006902A1 (en) * 2017-06-30 2019-01-03 Etel S.A. Coil arrangement and housing module set for a coil arrangement of an electric motor
EP3422537A1 (fr) * 2017-06-30 2019-01-02 Etel S.A. Système de bobine et kit modulaire de boîtier pour un système de bobine d'un moteur électrique
CN109217615A (zh) * 2017-06-30 2019-01-15 艾塔尔公司 线圈装置和用于电动机的线圈装置的壳体模块组
JP2019024301A (ja) * 2017-06-30 2019-02-14 エテル・ソシエテ・アノニム 電動機用のコイル装置およびコイル装置のためのケーシングモジュールセット
CN109217615B (zh) * 2017-06-30 2022-02-18 艾塔尔公司 线圈装置和用于电动机的线圈装置的壳体模块组
JP7085917B2 (ja) 2017-06-30 2022-06-17 エテル・ソシエテ・アノニム 電動機用のコイル装置およびコイル装置のためのケーシングモジュールセット

Also Published As

Publication number Publication date
SG175462A1 (en) 2011-11-28
SG184899A1 (en) 2012-11-29

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