CN102185444B - High dynamic linear permanent magnet synchronous motor with double-armature structure - Google Patents
High dynamic linear permanent magnet synchronous motor with double-armature structure Download PDFInfo
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- CN102185444B CN102185444B CN 201110128558 CN201110128558A CN102185444B CN 102185444 B CN102185444 B CN 102185444B CN 201110128558 CN201110128558 CN 201110128558 CN 201110128558 A CN201110128558 A CN 201110128558A CN 102185444 B CN102185444 B CN 102185444B
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Abstract
The invention discloses a high dynamic linear permanent magnet synchronous motor with a double-armature structure, which relates to the field of motors and can not only meet thrust density but also improve dynamic response. A column of parallel teeth are arranged on the surface of the air gap side of a core along a direction of motion, grooves are formed between every two adjacent teeth. A rectangular winding coil is fixedly wound on the teeth, comprises active sides embedded into the grooves, and has the pitch of 1. The coils at the opposite positions of the two sides of a secondary part are of the same phase, and produce magnetic lines of force with the same direction. An armature reaction magnetic flux vertically passes through the secondary part. The short edges of plate permanent magnets with parallelogram sections are parallel to the direction of motion, a long edge forms the included angle Theta of more than 85 degrees and less than or equal to 90 degrees with the short edge, and the section is parallel to the surface of the air gap side of a substrate. N columns of permanent magnets are embedded to the substrate along the direction of motion, the permanent magnets of each column are embedded in parallel in a way of N and S alternation, and every two adjacent permanent magnets vertical to the direction of motion have the same magnetizing direction. The widths of the permanent magnets at the front and rear ends of the secondary part are less than those of the permanent magnets on a middle part, and the effective length of the secondary part is greater than a core length and less than a doubled core length. The high dynamic linear permanent magnet synchronous motor with the double-armature structure is applied to short strokes.
Description
Technical field
The present invention relates to machine field, body relates to double armature structure linear permanent magnet synchronous motor.
Background technology
Shown in Figure 8 for publication number is CN101009454A, open day is a kind of dual-edge plane three-phase linear permanent magnetic synchronization motor of Chinese patent of application on August 1st, 2007, its patent No.: ZL200710071704.8.This motor is the structure two-sided flat plated three-phase linear permanent-magnet synchronous motor of a kind of fractional-slot, and this electric machine structure both can reduce the detent force that caused by slot effect, can take into account the tooth pitch τ of motor again
tWith pole span τ
pDesign; The manufacturing process of motor is simple in addition, and the end of winding is short, and insulation is easy, and efficiency of motor is high, cost is low, has therefore improved motor properties greatly.These linear electric motors are to not restriction of stroke, both can move elementaryly, also can move secondaryly, but no matter are elementary, and are still moving secondary, but owing to the quality of mover is big, therefore, the dynamic response of motor is poor.
Summary of the invention
The present invention can improve the dynamic response of motor again in order to satisfy the pushing force density of motor, and has proposed the high dynamically linear permanent magnet synchronous motor of a kind of double armature structure.
The high dynamically linear permanent magnet synchronous motor of double armature structure is elementary and secondary composition by two, secondary be clipped in two be parallel to each other elementary between, secondary and two all have air gap between elementary; Described two primary structures are identical, and each is elementary by elementary winding and elementary unshakable in one's determination the composition; Secondaryly form by a plurality of permanent magnets and a secondary substrate; The surperficial upper edge motor movement direction of elementary air gap side unshakable in one's determination is provided with the tooth that row are parallel to each other; It between tooth and the tooth groove; The coil of elementary winding is a square coil; Square coil is fastened on the tooth of elementary iron core, and two effective edges of square coil embed respectively in the groove of elementary iron core, and the pitch of square coil is 1; The square coil that is positioned on the relative position of secondary both sides is same phase, and the magnetic line of force direction that described two square coils produce is identical, and the armature reaction magnetic flux vertically passes secondary; Described permanent magnet is that the cross section is the plate permanent magnet of parallelogram; Two minor faces and the motor movement direction of described parallelogram parallel; Angle theta between its long limit and the minor face satisfies condition: 85 °＜θ≤90 °; The surface of the cross section of permanent magnet and secondary substrate air gap side parallels, and secondary substrate upper edge motor movement direction has embedded M row permanent magnet, and wherein M is 1 or even number; A plurality of permanent magnets in every row all successively N, S replace parallel embedding, identical perpendicular to every two adjacent permanent magnets magnetizing direction of motor movement direction; The permanent magnet width of the permanent magnet of secondary front end and rear end is less than the permanent magnet width of secondary centre, and secondary effective length is greater than elementary core length, and less than 2 times of elementary core length.
The present invention is directed to the short stroke applications field; Propose the high dynamically linear permanent magnet synchronous motor of a kind of double armature structure,, both improved the pushing force density of motor through adopting special primary structure and secondary structure; Reduce mover (secondary) quality again, thereby improved the dynamic response of linear electric motors greatly.
Description of drawings
Fig. 1 is a structural representation of the present invention; Fig. 2 is elementary 1 structural representation; Fig. 3 is elementary unshakable in one's determination 12 structural representation; Fig. 4 to Fig. 6 is secondary 2 structural representation, and Fig. 7 is secondary 2 a structural representation in the embodiment nine, and Fig. 8 is the structural representation of existing dual-edge plane three-phase linear permanent magnetic synchronization motor.
Embodiment
Embodiment one: combine this execution mode of Fig. 1 to 7 explanation, this execution mode is formed by two elementary 1 and one secondary 2, and secondary 2 are clipped in two is parallel to each other between elementary 1, all has air gap between secondary 2 and two elementary 1; Described two elementary 1 structures are identical, and each elementary 1 is formed with elementary unshakable in one's determination 12 by elementary winding 11; Secondary 2 are made up of a plurality of permanent magnets 21 and a secondary substrate 22; The surperficial upper edge motor movement direction of elementary 12 air gap sides unshakable in one's determination is provided with the tooth that row are parallel to each other; It between tooth and the tooth groove; The coil of elementary winding 11 is a square coil; Square coil is fastened on elementary unshakable in one's determination 12 tooth, and two effective edges of square coil embed respectively in elementary unshakable in one's determination 12 groove, and the pitch of square coil is 1; The square coil that is positioned on the secondary 2 both sides relative positions is same phase, and the magnetic line of force direction that described two square coils produce is identical, and the armature reaction magnetic flux vertically passes secondary 2; Described permanent magnet 21 is the plate permanent magnet of parallelogram for the cross section; Two minor faces and the motor movement direction of described parallelogram parallel; Angle theta between its long limit and the minor face satisfies condition: 85 °＜θ≤90 °; The surface of the cross section of permanent magnet 21 and secondary substrate 22 air gap sides parallels, and secondary substrate 22 upper edge motor movement directions have embedded M row permanent magnet, and wherein M is 1 or even number; A plurality of permanent magnets 21 in every row all successively N, S replace parallel embedding, identical perpendicular to every two adjacent permanent magnets 21 magnetizing directions of motor movement direction; The permanent magnet 21 of secondary 2 front ends and permanent magnet 21 width of rear end are less than permanent magnet 21 width in the middle of secondary 2, and secondary 2 effective lengths are greater than elementary 12 length unshakable in one's determination, and less than 2 times of elementary 12 length unshakable in one's determination.
Embodiment two: combine Fig. 4 and Fig. 5 that this execution mode is described; This execution mode and embodiment one difference are that along the columns M of the permanent magnet 21 of motor movement direction be at 1 o'clock; It is through hole that secondary substrate 22 broad wayss have identical with permanent magnet 21 shapes, and permanent magnet 21 embeds in through hole.Other composition is identical with embodiment one with connected mode.Acute angle angle theta between long limit of the plate permanent magnet of parallelogram and the minor face is 0 °～3 °, and is as shown in Figure 5.
Embodiment three: combine Fig. 6 that this execution mode is described; This execution mode and embodiment one difference are when the columns M of the permanent magnet 21 of motor movement direction is even number; Even column permanent magnet 21 is symmetrical set with respect to the center line of secondary substrate 22 along the motor movement direction; It is through hole that secondary substrate 22 broad wayss have identical with permanent magnet 21 shapes; Permanent magnet 21 embeds in through hole, or to have identical with permanent magnet 21 shapes on the surface of secondary substrate 22 air gap sides be groove, and permanent magnet 21 embeds in groove.Other composition is identical with embodiment one with connected mode.Perpendicular to the adjacent long edges angulation of every two adjacent permanent magnets 21 of motor movement direction between 174 °～180 °.
Embodiment four: this execution mode and embodiment two or three differences are that the facewidth of the facewidth and center tooth of elementary 12 liang of end teeth unshakable in one's determination is different; The tooth depth of elementary 12 liang of end teeth unshakable in one's determination is less than the tooth depth of center tooth, and elementary 12 length L p unshakable in one's determination satisfy following relation: Lp=i τ
p+ k τ
p, wherein, i is a natural number, k=0.3～0.5, wherein τ
pBe pole span.Other composition is identical with embodiment two or three with connected mode.
Embodiment five: this execution mode and embodiment four differences are that two elementary positions of unshakable in one's determination 12 satisfy condition along the direction of motion length δ that staggers: 0≤δ≤(1/6) τ
pOther composition is identical with embodiment four with connected mode.
Embodiment six: this execution mode and embodiment five differences are that the number of phases of described motor is a three-phase, elementary unshakable in one's determination 12 tooth pitch τ of motor
tWith secondary 2 pole span τ
pBetween satisfy and to concern 3n τ
t=(3n ± 1) τ
p, wherein n is a natural number.Other composition is identical with embodiment five with connected mode.
Embodiment seven: this execution mode is that with embodiment one, two, three, five or six differences secondary substrate 22 adopts nonmagnetic conducting metal or nonmetallic materials.There is layer of metal coating on the surface of permanent magnet 21.Other composition and connected mode and embodiment one, two, three, five or six phase are together.
Embodiment eight: the difference of this execution mode and embodiment seven is permanent magnet 21 width of permanent magnet 21 and rear end of secondary 2 front ends less than 2/3 of permanent magnet 21 width in the middle of secondary 2, and other composition is identical with embodiment seven with connected mode.
Content of the present invention is not limited only to the content of above-mentioned each execution mode, and the combination of one of them or several embodiments equally also can realize the purpose of inventing.
Claims (10)
1. the high dynamically linear permanent magnet synchronous motor of double armature structure, it is made up of two elementary (1) and one secondary (2), and secondary (2) are clipped in two and are parallel to each other between elementary (1), all have air gap between secondary (2) and two elementary (1); Described two elementary (1) structures are identical, and each elementary (1) is formed by elementary winding (11) and elementary iron core (12); Secondary (2) are made up of a plurality of permanent magnets (21) and a secondary substrate (22); The surperficial upper edge motor movement direction that it is characterized in that elementary iron core (12) air gap side is provided with the tooth that row are parallel to each other; It between tooth and the tooth groove; The coil of elementary winding (11) is a square coil; Square coil is fastened on the tooth of elementary iron core (12), and two effective edges of square coil embed respectively in the groove of elementary iron core (12), and the pitch of square coil is 1; The square coil that is positioned on the relative position of secondary (2) both sides is same phase, and the magnetic line of force direction that described two square coils produce is identical, and the armature reaction magnetic flux vertically passes secondary (2); Described permanent magnet (21) is the plate permanent magnet of parallelogram for the cross section; Two minor faces and the motor movement direction of described parallelogram parallel; Angle theta between its long limit and the minor face satisfies condition: 85 °＜θ≤90 °; The surface of the cross section of permanent magnet (21) and secondary substrate (22) air gap side parallels, and secondary substrate (22) upper edge motor movement direction has embedded M row permanent magnet, and wherein M is 1 or even number; A plurality of permanent magnets (21) in every row all successively N, S replace parallel embedding, identical perpendicular to every two adjacent permanent magnets (21) magnetizing direction of motor movement direction; Permanent magnet (21) width of permanent magnet (21) of secondary (2) front end and rear end is less than permanent magnet (21) width in the middle of secondary (2), and secondary (2) effective length is greater than elementary iron core (12) length, and less than 2 times of elementary iron core (12) length.
2. the high dynamically linear permanent magnet synchronous motor of double armature structure according to claim 1; It is characterized in that along the columns M of the permanent magnet (21) of motor movement direction be at 1 o'clock; Secondary substrate (22) broad ways has and the identical through hole of permanent magnet (21) shape, and permanent magnet (21) embeds in through hole.
3. the high dynamically linear permanent magnet synchronous motor of double armature structure according to claim 1; It is characterized in that when the columns M of the permanent magnet (21) of motor movement direction is even number; Even column permanent magnet (21) is symmetrical set with respect to the center line of secondary substrate (22) along the motor movement direction; Secondary substrate (22) broad ways has and the identical through hole of permanent magnet (21) shape, and permanent magnet (21) embeds in through hole.
4. the high dynamically linear permanent magnet synchronous motor of double armature structure according to claim 1; It is characterized in that when the columns M of the permanent magnet (21) of motor movement direction is even number; Even column permanent magnet (21) is symmetrical set with respect to the center line of secondary substrate (22) along the motor movement direction; Have on the surface of secondary substrate (22) air gap side and the identical groove of permanent magnet (21) shape, permanent magnet (21) embeds in groove.
5. according to claim 2, the high dynamically linear permanent magnet synchronous motor of 3 or 4 described double armature structures; The facewidth that it is characterized in that elementary iron core (12) two end teeth is different with the facewidth of center tooth; The tooth depth of elementary iron core (12) two end teeth is less than the tooth depth of center tooth, and elementary iron core (12) length L p satisfies following relation: Lp=i τ
p+ k τ
p, wherein, i is a natural number, k=0.3～0.5, wherein τ
pBe pole span.
6. the high dynamically linear permanent magnet synchronous motor of double armature structure according to claim 5, the position that it is characterized in that two elementary iron cores (12) satisfies condition along the direction of motion length δ that staggers: 0≤δ≤(1/6) τ
p
7. the high dynamically linear permanent magnet synchronous motor of double armature structure according to claim 6, the number of phases that it is characterized in that described motor is a three-phase, the tooth pitch τ of the elementary iron core (12) of motor
tPole span τ with secondary (2)
pBetween satisfy and to concern 3n τ
t=(3n ± 1) τ
p, wherein n is a natural number.
8. according to claim 1,2,3,4, the high dynamically linear permanent magnet synchronous motor of 6 or 7 described double armature structures, it is characterized in that secondary substrate (22) adopts nonmagnetic conducting metal or nonmetallic materials.
9. the high dynamically linear permanent magnet synchronous motor of double armature structure according to claim 8 is characterized in that along the surface of motor permanent magnet (21) layer of metal coating being arranged.
10. the high dynamically linear permanent magnet synchronous motor of double armature structure according to claim 9, permanent magnet (21) width of permanent magnet (21) and rear end that it is characterized in that secondary (2) front end is less than 2/3 of permanent magnet (21) width of secondary (2) centre.
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| CN 201110128558 CN102185444B (en) | 2011-05-18 | 2011-05-18 | High dynamic linear permanent magnet synchronous motor with double-armature structure |
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|---|---|---|---|
| CN 201110128558 CN102185444B (en) | 2011-05-18 | 2011-05-18 | High dynamic linear permanent magnet synchronous motor with double-armature structure |
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| CN106350966B (en) * | 2015-07-15 | 2020-11-03 | 青岛海尔洗衣机有限公司 | Automatic putting device and washing machine |
| CN105915018B (en) * | 2016-05-20 | 2018-06-01 | 南京航空航天大学 | A kind of compound phase band winding construction of double armature cylindrical permanent linear synchronous motor |
| CN106505821A (en) * | 2016-09-19 | 2017-03-15 | 江苏大学 | A kind of primary permanent magnet vernier linear electric motors and its dividing method |
| RU2679002C1 (en) * | 2018-01-17 | 2019-02-05 | Олег Анатольевич Рокачевский | Synchronous motor |
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| KR100720753B1 (en) * | 2000-04-19 | 2007-05-22 | 가부시키가이샤 야스카와덴키 | Permanent magnet synchronous linear motor |
| CN200973056Y (en) * | 2006-11-24 | 2007-11-07 | 沈阳工业大学 | Magnetic conductance modulation permanent-magnet liner synchronous dynamo |
| CN1967980A (en) * | 2006-11-24 | 2007-05-23 | 沈阳工业大学 | Intersegmental dephasing asymmetric six-phase permanent-magnet linear servo-actuator |
| CN100566097C (en) * | 2006-12-13 | 2009-12-02 | 哈尔滨工业大学 | Cylindrical three-phase permanent magnetic linear synchronous motor |
| US8810082B2 (en) * | 2009-03-13 | 2014-08-19 | Hitachi, Ltd. | Linear motor |
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