CN102714433A - Machine comprising a multipart coil element - Google Patents

Machine comprising a multipart coil element Download PDF

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Publication number
CN102714433A
CN102714433A CN2011800072907A CN201180007290A CN102714433A CN 102714433 A CN102714433 A CN 102714433A CN 2011800072907 A CN2011800072907 A CN 2011800072907A CN 201180007290 A CN201180007290 A CN 201180007290A CN 102714433 A CN102714433 A CN 102714433A
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CN
China
Prior art keywords
machine
elements
groove
gap
magnetic flux
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2011800072907A
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Chinese (zh)
Inventor
S.A.埃文斯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
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Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of CN102714433A publication Critical patent/CN102714433A/en
Pending legal-status Critical Current

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    • 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

Abstract

The invention relates to an electromagnetic machine comprising two parts which are movable relative to one another, of which one comprises several elements for conducting a magnetic field, wherein two of the elements are separated from each other by an air gap intersecting the magnetic field direction. One of the two elements comprises in the air gap region a groove extending in the magnetic field direction.

Description

Machine with multipart coil part
Prior art
Changing electric energy into mechanical energy or opposite machine and generally include two parts that move relative to each other, works between them in magnetic field.At least one parts in these parts comprise that being used for current transitions is magnetic field or opposite coil windings.Particularly in the zone of such coil windings, use the magnetic flux element, with guiding and pack magnetic field.
Owing to the normally multi-part design of these magnetic flux elements of the reason on the manufacturing technology, wherein, keep air-gap in the zone between adjacent magnetic flux element, said air-gap can damage the conduction in magnetic field.
Task of the present invention provides a kind of like this electromagnetism machine, i.e. the propagation in the magnetic field between the adjacent element of improvement magnetic flux element in a kind of like this electromagnetism machine.
Summary of the invention
The present invention has solved this problem through the electromagnetism machine with claim 1 characteristic.Dependent claims has been described some favourable forms of implementation.
But the electromagnetism facility have two parts of relative motion each other, and one of them parts comprises the element that a plurality of guiding magnetic fields are used.Two elements in these elements are separated from each other through the air-gap of cutting magnetic field direction.An element in these elements has the groove that extends along magnetic direction in the air-gap zone.These elements can be the parts of motor stator, and stator can support coil windings.
Through the surface that groove has limited element, in said surface,, so just limited eddy current owing to fringe magnetic field meeting inductive loop in the zone of air-gap.Through this measure the heating of element is minimized, and make the maximizing efficiency of electromagnetism machine.
Element can comprise the plate that some pile up, and groove is arranged in the external plate of stacking.Cause the eddy current of eddy current loss mainly to appear in the zone of plate of ragged edge, like this, can realize effectively minimizing of eddy current loss, and simultaneously through groove can avoid go up most and under plate between the zone in material unaccounted-for (MUF).
Each element in two elements can have groove, and wherein, these grooves are in alignment with each other.The groove of two elements misplaces along air-gap each other in another form of implementation.Correspondingly two elements can have the groove of varying number.
By these remodeling approach can realize groove for example with the geometry condition, particularly suitable with the width of element.In addition, coordinated with each other the reaching of the groove through two elements suppressed fringing field effectively, and therefore also suppresses eddy current.
At least one element in these elements can be used to produce the coil encircling in magnetic field.The electromagnetism machine can have stator or rotor; It comprises a plurality of elements that are used for guiding magnetic field; Wherein, these coils can be wound into respectively on the single element, or the coil that before these elements are formed stator or rotor, will wind pushes away and installs on the element.Can effectively utilize the intermediate cavity between the element of assembling especially through this measure, regulation is used to hold coil with these chambers.Like this, can be with the loading density maximization of the wire turn of the coil in the intermediate cavity, thus can improve the production capacity and the efficient of electromagnetism machine.
Said machine can be motor or engine especially, and wherein, extend along the circumferencial direction of a motor or a machine in air-gap in magnetic field.Can have a plurality of 1 shape elements through this measure the present invention, and use on disclosed magnetic flux element itself.
Instead magnetic field can be extended along the radial direction of a motor or a machine in air-gap.Like this, the present invention can be used on also that another has been disclosed, and has in the magnetic flux element of a plurality of T shape sections, and said T shape section is surrounded by a ring.
In another form of implementation, the present invention can use in the linear motor of the magnetic flux element with multi-part formula.
Description of drawings
With reference to accompanying drawing the present invention is described in more details below.These accompanying drawings are:
Fig. 1: first form of implementation of motor with brushless of stator;
Fig. 2: second form of implementation of motor with brushless of stator;
Fig. 3: the zone of the magnetic flux element that the I shape of the stator among Fig. 1 is provided with;
Fig. 4: the zone of the magnetic flux element that the T shape of the stator among Fig. 2 is provided with;
The zone of Fig. 5: Fig. 3 with magnetic flux element, wherein, said magnetic flux element is provided with groove;
The zone of Fig. 6: Fig. 4 with magnetic flux element, wherein, said magnetic flux element is provided with groove;
The flexible program of the flux plate adjacent one another are of the magnetic flux element of Fig. 7 A-E: Fig. 5 and Fig. 6.
Embodiment
Fig. 1 illustrates the motor 100 of the brushless of the stator that has in first form of implementation 110 and rotor 120.Stator 110 comprises and a plurality ofly basically be that the magnetic flux element 130 of T shape, said magnetic flux element are so circular settings that promptly they surround rotor 120.Each magnetic flux element in the magnetic flux element 130 all supports coil 140.In the exemplary form of implementation that illustrates, used three kinds of dissimilar coils 140, these coils are represented with solid line, stroke dotted line or pecked line respectively.One type coil is electrically connected to each other, and therefore, what produce in this example is three-phase machine.
Rotor 120 comprises at least one permanent magnet (not shown).For rotor 120 is rotated with respect to stator 110, alternating current is provided for coil 140.Through the magnetic field that these alternating currents change in coil 140, these magnetic fields are by 130 channeling conducts of magnetic flux element, and coupled to each other.Therefore, on the section of the inside sensing of the magnetic flux element 130 of T shape, form the north and south poles of the magnetic in the magnetic field that causes through alternating electric field.The north and south poles of the magnetic that produces produces attraction or produces repulsive interaction the South Pole or the arctic of the magnetic of the permanent magnet of rotor 120, and rotor 120 is directed in the magnetic field that produces like this.
Trigger rotation 105 motions of the magnetic field that produces by stator 110 through electricity, and because magnetic couplings rotor 120 is also followed this rotatablely moving around motor 100 to the alternation of coil 140.Through can obtain the rotary speed of rotor 120 to the corresponding triggering of coil 140.
Can motor 100 be used for from rotor 120 rotatablely moving at coil 140 induced current with respect to stator 110 similarly.Motor 100 is as sending out machine works in this case.The title of rotor 120 and stator 110 can be interchangeable according to observer's angle, and the form of implementation shown in being not limited to.In another form of implementation, also can magnetic flux element 130 and coil 140 be installed on the rotor 120 of motor 100.
Load onto coil 140 for the logical element 130 of single electromagnetism, its way is individually to twine each element 130 with coil 140, or the coil 140 that will in advance wind be installed to single magnetic flux element 130 towards rotation 105 section on.Just, magnetic flux element 130 just magnetic flux element 130 is assembled on the stator 110 after being provided with coil 140.Between adjacent magnetic flux element 130, remain with air-gap 150, said air-gap can damage the propagation in the magnetic field between the adjacent magnetic flux element 130.Air-gap 150 between the magnetic flux element 130 radially extends towards rotation 105 directions of motor 100.
Fig. 2 illustrates the motor 100 of the brushless of the rotor 120 among the stator that has in second form of implementation 110 and Fig. 1.Magnetic flux element 130 is connected to each other along the inner periphery of stator 110.Externally magnetic flux element 130 is surrounded by ring-type element 210, for example through magnetic flux element 130 is pressed in the ring-type element 210.Air-gap 150 between magnetic flux element 130 and the ring-type element 210 along the circumferential direction extends around the rotation 105 of motor 100.Other the above-mentioned explanation with reference to figure 1 is identical.
Fig. 3 illustrates a zone of the magnetic flux element 130 that 1 shape of the stator 110 of Fig. 1 is provided with.Magnetic flux element 130 left side and the right is adjacent with air-gap 150 respectively.For the ease of understanding this air-gap amplification is illustrated.Each magnetic flux element 130 is made up of a folded flux plate 220.
Between magnetic flux element 130, propagate the magnetic flux φ that changes.In the fringe region of the magnetic flux element 130 of the both sides of air-gap 150, there is φ in the vicissitudinous edge flux FeAnd φ FaEdge flux φ FaMainly be in the extension plane of flux plate 220, to extend.The edge flux φ that changes FaBlade inlet angle and blade outlet angle with respect to flux plate 220 are 90 °.There is magnetic flux φ at edge by changing FaThe eddy current i that causes FaVery little, because can form eddy current i therein FaGeometric areas receive the restriction of the thickness of flux plate 220.The thickness of the flux plate 220 of motor 100 for example can be 0.5 millimeter.So eddy current i FaEnough is little, can ignore in this case.
The edge flux φ that changes FeBlade inlet angle and blade outlet angle with respect to flux plate 220 also are 90 °.Through the edge flux φ that changes FeThe eddy current i that causes FeBecause the size in the zone of flux plate 220-in this zone eddy current deployable-reach considerable numerical value.This zone receives the restriction of the width of flux plate 220, and said width can be 20 times more than of thickness of flux plate 220 in miniature motor 100.Pass through the edge flux φ of variation with it accordingly FeThe eddy current i that causes FeSufficiently big, so that cause in the zone of air-gap 150 heating to flux plate 220, and the efficient of infringement motor 100.
Fig. 4 illustrates a zone of the magnetic flux element 130 that the T shape of the stator 110 of Fig. 2 is provided with.The magnetic flux φ that changes crosses the magnetic flux element 130 of air-gap 150 above propagating into from following magnetic flux element 130, and to the right be distributed to identical parts left.As Fig. 3, it is folded that these two magnetic flux elements 130 are designed to flux plate 220 respectively.In Fig. 4, in air-gap 150 zones, also form the edge flux φ that changes FeAnd φ Fa
The edge flux φ that changes FaBlade inlet angle and blade outlet angle with respect to flux plate 220 are 90 °.As top illustrated during with reference to figure 3, through the edge flux φ that changes aOnly cause little eddy current i Fa, because have only few space to supply eddy current i because the thickness of flux plate 220 is restricted FaExpansion use.
The edge flux φ that changes FeInlet angle and blade outlet angle with respect to flux plate 220 also are 90 °.Through the edge flux φ that changes FeCaused eddy current i FeOnly have because the space of the restriction of the width of flux plate 220 offers its expansion use, and can reach appreciable numerical value.These eddy current i FeCan cause heating, and reduce the efficient of motor 100 the magnetic flux element 130 in air-gap 150 zones.
Fig. 5 illustrates the zone of the Fig. 3 with magnetic flux element 130, and said magnetic flux element is provided with groove 510.These grooves 510 are the extension of φ direction along magnetic field, and the alignment in couples in two magnetic flux elements 130 of these grooves 510.
Vertically be divided into a plurality of sections through groove 510 flux plate 220 in the zone of air-gap 150.Therefore, the edge flux φ through changing FeCaused turbine i FeHave the space that obviously is reduced and be used for expansion, like this, all eddy current i FeSummation be reduced significantly.Consequently reduce magnetic flux element 130 heated trend in air-gap 150 zones, and improved the efficient of motor 100.
These grooves 510 just are set in the flux plate 220 shown in the foremost.Those are not to be positioned at the outside, but the flux plate 220 between two flux plates 220 does not have groove 510, because in these flux plates, there is not the edge flux φ of variation FeIn Fig. 5, be not illustrated in the groove 510 in the last flux plate 220, the groove 510 ground effects shown in these groove correspondences flux plate 220 up front.
Fig. 6 illustrates the zone that having of Fig. 4 is provided with the magnetic flux element 130 of groove 510.According to as top with reference to figure 5 described corresponding manners, the form of implementation shown in Fig. 6 be that in the difference of the form of implementation shown in Fig. 4 these grooves 510 are to be set in the top and following magnetic flux element 130.
Two grooves in the last magnetic flux element 130 in couples with following magnetic flux element 130 in groove 510 align.Two grooves 510 in addition in the last magnetic flux element 130 are positioned at the opposite of the outer edge region of magnetic flux element 130 down.Also be in Fig. 6, these grooves 510 produce the edge flux φ to the space in magnetic flux element 130-through changing in said space FeThe eddy current i that causes FeExpansion-generation restriction.Eddy current i consequently FeSummation less than the eddy current i among Fig. 4 FeSummation.
As shown in Figure 5, these grooves 510 are respectively to extend in the uppermost and invisible nethermost flux plate 220 of superincumbent and following magnetic flux element 130.
Fig. 7 illustrates some modification of flux plate adjacent one another are of the magnetic flux element 130 of Fig. 5 and Fig. 6.As shown in Fig. 7 A to 7D, can the groove 510 of any amount be set in the magnetic flux element 130, perhaps be set in their the external flux plate 220.Groove 510 in magnetic flux element 130 adjacent with air-gap 150 or external flux plate 220 can align shown in Fig. 7 A and Fig. 7 B each other in couples, perhaps shown in Fig. 7 C and Fig. 7 D, shifts to install each other.The quantity of the groove 510 in two magnetic flux elements 130 or flux plate 220 can be like Fig. 7 A with identical shown in the 7B, and is perhaps inequality shown in Fig. 7 C and Fig. 7 D.
Fig. 7 E illustrates a kind of modification of the present invention, in described modification, is set to the groove shown in the solid line 510 in the top flux plate of two flux plates that stack 220.These grooves 510 are opposed each other with respect to air-gap 150, shown in Fig. 7 A.Be set in place in the following flux plate 220 below top flux plate 220 with drawing the groove 510 that is shown in dotted line, wherein, these grooves 510 are provided with shown in Fig. 7 B.These grooves also can be arranged in other relative positions like Fig. 7 C and Fig. 7 D shownly in other forms of implementation.

Claims (10)

1. the electromagnetism machine (100) that has two parts that can move relative to each other (110,120); One of them parts (110) comprise a plurality of elements (130) that are used for guiding magnetic field (φ); Wherein, Two elements in these elements (130) are separated from each other through the air-gap (150) that the direction with magnetic field (φ) intersects, and it is characterized in that, an element in two elements (130) has the groove (510) that (φ) direction is extended along magnetic field in the zone of air-gap (150).
2. according to the described electromagnetism machine of claim 1 (100), it is characterized in that element (130) comprises the plate (220) that piles up, and groove (510) is set in the external plate (220) of heap.
3. according to claim 1 or 2 described electromagnetism machines (100), it is characterized in that each element in said two elements (130) all has groove (510), wherein, these grooves (510) are in alignment with each other.
4. according to each the described electromagnetism machine (100) in the aforementioned claim, it is characterized in that said two elements (130) have groove (510) respectively, said groove misplaces along air-gap (150) each other.
5. according to the described electromagnetism machine of claim 4 (100), it is characterized in that, said two elements (130) have the groove (510) of varying number with respect to the opposed plate of air-gap (150) (220).
6. according to each the described electromagnetism machine (100) in the claim 2 to 5, it is characterized in that the different plate (220) of an element in these elements (130) has groove (510) respectively, wherein, the groove (510) of element (130) misplaces each other.
7. according to each the described electromagnetism machine (100) in the aforementioned claim, it is characterized in that, at least one element (130) in these elements by coil (140) around, to produce magnetic field (φ).
8. according to each the described electromagnetism machine (100) in the aforementioned claim, wherein, electromagnetism machine (100) is motor or sends out machine, it is characterized in that, magnetic field (φ) extends along the radial direction of a motor or a machine in air-gap (150).
9. according to each the described electromagnetism machine (100) in the claim 1 to 7, wherein, drive unit is motor or sends out machine, it is characterized in that, magnetic field (φ) extends along the circumferencial direction of a motor or a machine in air-gap (150).
10. according to each the described electromagnetism machine (100) in the claim 1 to 7, wherein, electromagnetism machine (100) is a linear motor.
CN2011800072907A 2010-01-27 2011-01-19 Machine comprising a multipart coil element Pending CN102714433A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE201010001242 DE102010001242A1 (en) 2010-01-27 2010-01-27 Machine with multipart coil element
DE102010001242.4 2010-01-27
PCT/EP2011/050690 WO2011092096A2 (en) 2010-01-27 2011-01-19 Machine comprising a multipart coil element

Publications (1)

Publication Number Publication Date
CN102714433A true CN102714433A (en) 2012-10-03

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CN2011800072907A Pending CN102714433A (en) 2010-01-27 2011-01-19 Machine comprising a multipart coil element

Country Status (5)

Country Link
EP (1) EP2529470A2 (en)
CN (1) CN102714433A (en)
DE (1) DE102010001242A1 (en)
IN (1) IN2012DN06396A (en)
WO (1) WO2011092096A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019217876A1 (en) * 2019-11-20 2021-05-20 Lenze Drives Gmbh Kit for an electric drive and set of electric drives

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6087755A (en) * 1997-08-20 2000-07-11 Minebea Co., Ltd. Radial gap type cylindrical motor
EP1460746A1 (en) * 2001-11-29 2004-09-22 Yamaha Hatsudoki Kabushiki Kaisha Axial gap type dynamo-electric machine
EP1811630A1 (en) * 2006-01-24 2007-07-25 ALSTOM Technology Ltd Rotating electrical machine
DE102004008688B4 (en) * 2004-02-21 2008-07-31 Oswald Elektromotoren Gmbh linear motor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6087755A (en) * 1997-08-20 2000-07-11 Minebea Co., Ltd. Radial gap type cylindrical motor
EP1460746A1 (en) * 2001-11-29 2004-09-22 Yamaha Hatsudoki Kabushiki Kaisha Axial gap type dynamo-electric machine
DE102004008688B4 (en) * 2004-02-21 2008-07-31 Oswald Elektromotoren Gmbh linear motor
EP1811630A1 (en) * 2006-01-24 2007-07-25 ALSTOM Technology Ltd Rotating electrical machine

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Publication number Publication date
WO2011092096A2 (en) 2011-08-04
IN2012DN06396A (en) 2015-10-02
EP2529470A2 (en) 2012-12-05
WO2011092096A3 (en) 2011-10-13
DE102010001242A1 (en) 2011-07-28

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Application publication date: 20121003