CN103929034A - Segmented-rotor paratactic mixed excitation magnetic flow switching double-salient-pole motor - Google Patents
Segmented-rotor paratactic mixed excitation magnetic flow switching double-salient-pole motor Download PDFInfo
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- CN103929034A CN103929034A CN201310012999.7A CN201310012999A CN103929034A CN 103929034 A CN103929034 A CN 103929034A CN 201310012999 A CN201310012999 A CN 201310012999A CN 103929034 A CN103929034 A CN 103929034A
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Abstract
The invention discloses a segmented-rotor paratactic mixed excitation magnetic flow switching double-salient-pole motor. The segmented-rotor paratactic mixed excitation magnetic flow switching double-salient-pole motor is characterized in that six electro-magnetic portion armature teeth (9) and six electro-magnetic portion excitation teeth (10) are arranged on an electro-magnetic portion stator yoke (4) in a staggered mode, the electro-magnetic portion armature teeth (9) and the electro-magnetic portion excitation teeth (10) are respectively arranged oppositely, armature windings (3) are wound on the electro-magnetic portion armature teeth (9), and excitation armature windings (1) are wound on the electro-magnetic portion excitation teeth (10). Six permanent magnet portion armature teeth (11) and six permanent magnet portion excitation teeth (12) are arranged on a permanent magnet portion stator yoke (5) in a staggered mode and respectively arranged oppositely, armature windings (3) are wound on the permanent magnet portion armature teeth (11), permanent magnets (2) attach to the permanent magnet portion excitation teeth (12), a magnet-shielding bush (7) is connected with a motor shaft (13), a segmented rotor (6) is clamped in the magnet-shielding bush (7) through a dovetail groove (14), and the electro-magnetic portion stator yoke (4) and the permanent magnet portion stator yoke (5) are nested in a motor magnet-shielding casing (8).
Description
Technical field
The present invention relates to a kind of segmented-rotor block form mixed excited magnetic pass switch dual salient pole machine, be applicable to the horizontal electrical domain that takes place frequently of speed change.
Background technology
Along with to the improving constantly and develop of permanent magnetic material performance, the development of magneto is maked rapid progress, and has greatly improved the power density of motor, is mainly divided into rotor permanent magnet type and stator permanent magnetic type electric.Segmented-rotor permanent magnet flux switch dual salient pole machine belongs to stator permanent magnetic type electric, compares with rotor permanent magnet type motor, and permanent magnet is installed simple, and heat radiation is convenient, and moment of inertia is little, is suitable for high-speed cruising, and operating safety factor is high.In addition, segmented-rotor permanent magnet flux switch dual salient pole machine also has the advantages such as double polarity sine magnetic linkage, winding overhang is little, copper loss is little.Therefore, segmented-rotor permanent magnet flux switch dual salient pole machine has obtained development at full speed.Yet except possessing above-mentioned advantage, segmented-rotor permanent magnet flux switch dual salient pole machine also has the total shortcoming of general magneto: 1) location torque is large.Location torque is to cause due to energy hunting that slot effect causes, is high frequency period pulsating wave.For the large problem of magneto location torque, numerous solutions have been proposed at present, as measures such as number of pole-pairs coupling, basic parameter optimization (changing pole embrace, channel opening width, gas length), skewed slot, pole form optimization, magnetic pole displacement, tooth pairing, auxiliary tooth/groove, knuckle, current harmonics penalty methods, all obtained certain effect.2) flux control difficulty.Segmented-rotor permanent magnet flux switch dual salient pole machine is by regulating armature winding electric current to reach the object that regulates magnetic field, and adjustable range is limited.In order to widen as far as possible its adjustable magnetic scope under the prerequisite retaining the every advantage of segmented-rotor permanent magnet flux switch dual salient pole machine, to meet the requirement of the occasions such as speed governing, generating, furtherd investigate segmented-rotor block form mixed excited magnetic pass switch dual salient pole machine.
Summary of the invention
For solving the problem of segmented-rotor permanent magnet flux switch dual salient pole machine flux control difficulty, the present invention proposes a kind of segmented-rotor block form mixed excited magnetic pass switch dual salient pole machine.This segmented-rotor block form mixed excited magnetic pass switch dual salient pole machine, comprise excitation winding, permanent magnet, armature winding, electricity excitation part stator yoke, permanent magnetism partial stator yoke, segmented-rotor, every magnetic lining and motor every magnetic shell body, it is characterized in that: 6 electric excitation part armature tooths and 6 electric excitation division minute excitation teeth are crisscross arranged in electric excitation part stator yoke, electricity excitation part armature tooth and an electric excitation division minute excitation tooth are oppositely arranged respectively between two, on electricity excitation part armature tooth, circle is around armature winding, electricity excitation division divides on excitation tooth circle around excitation winding, 6 permanent magnetism part armature tooths and 6 permanent magnetism part excitation teeth are crisscross arranged on permanent magnetism partial stator yoke, permanent magnetism part armature tooth and permanent magnetism part excitation tooth are oppositely arranged respectively between two, on permanent magnetism part armature tooth, circle is around armature winding, Surface Mount permanent magnet on permanent magnetism part excitation tooth, every magnetic lining, be connected with motor shaft, segmented-rotor is stuck in magnetic lining by dovetail groove, electricity excitation part stator yoke and permanent magnetism partial stator yoke are nested in motor in magnetic shell body.Permanent magnet radially magnetizes, and the permanent magnet magnetizing direction of placed adjacent is contrary.Excitation winding is in series circle on electric excitation division minute excitation tooth, adopts and concentrates winding; In accordance with the right-hand rule, the energising direction in each excitation winding all should be identical or contrary with the magnetizing direction of permanent magnet on its corresponding permanent magnetism part excitation tooth.Armature winding circle is divided into three-phase on the electric excitation part electric excitation part armature tooth corresponding with permanent magnetism part and permanent magnetism part armature tooth, on relative two armature tooths circle around armature winding differential concatenation form a phase.Rotor number of poles can be expanded and be: 12/5,12/7,12/8,12/10,12/11,24/10,24/14,24/16,24/20,24/22, and before slash, be wherein stator poles, be segmented-rotor number after slash.
The adjustable magnetic method of segmented-rotor block form mixed excited magnetic pass switch dual salient pole machine, permanent magnet Surface Mount is on 6 excitation teeth of permanent magnetism part, relative with rotor, radially magnetizes, and the permanent magnet magnetizing direction of placed adjacent is contrary; Permanent magnetic field is closed after permanent magnet, stator yoke, air gap, segmented-rotor successively, and electricity excitation magnetic field is closed after stator yoke, air gap, segmented-rotor, by regulating excitation winding electric current can realize wide region adjustable magnetic.
The present invention, by changing direct current size in electric excitation magnet exciting coil partly, can carry out to motor the flux control of wide region, to adapt to the requirement of variable speed constant frequency generator.Owing to adopting this special construction of segmented-rotor, and armature winding is every tooth coiling, thereby along with rotor, in armature winding, the magnetic linkage of linkage carries out bipolarity variation, and has short magnetic circuit feature, effectively reduced motor iron loss; This structure has certain effect of contraction to magnetic circuit simultaneously, has reduced the interaction between winding, can make phase winding mutual inductance self-induction ratio be down to below 5%, thereby make motor itself have preferably fault freedom, has improved the reliability of motor.
In sum, the segmented-rotor block form mixed excited magnetic pass switch dual salient pole machine that the present invention proposes is being possessed under the prerequisite of segmented-rotor permanent magnet flux switch dual salient pole machine advantage, there is wider adjustable magnetic scope and good fault freedom, be applicable to variable speed constant frequency generator system.
Accompanying drawing explanation
Fig. 1 is that structure of the present invention is combined to schematic cross-section;
Fig. 2 is electric excitation division separation structure schematic cross-section of the present invention;
Fig. 3 is permanent magnetism part-structure schematic cross-section of the present invention;
Number in the figure title: 1, excitation winding, 2, permanent magnet, 3, armature winding, 4, electric excitation part stator yoke, 5, permanent magnetism partial stator yoke, 6, segmented-rotor, 7, every magnetic lining, 8, motor every magnetic shell body, 9, electric excitation part armature tooth, 10, electric excitation division divides excitation tooth, 11, permanent magnetism part armature tooth, 12, permanent magnetism part excitation tooth, 13, motor shaft
, 14,dovetail groove.Al, A2, Bl, B2, Cl, C2: electric excitation part armature tooth and around the armature coil on electric excitation part armature tooth; Fl, F2, F3, F4, F5, F6: electric excitation division divides excitation tooth and around the magnet exciting coil on electric excitation part armature tooth; Al1, A22, Bl1, B22, Cl1, C22: permanent magnetism part armature tooth and around the armature coil on permanent magnetism part armature tooth; Fl1, F22, F33, F44, F55, F66: permanent magnetism part excitation tooth and the superincumbent permanent magnet of Surface Mount.The direction of arrow is permanent magnet magnetizing direction.
Embodiment
As shown in the figure, a kind of segmented-rotor block form mixed excited magnetic pass switch dual salient pole machine, comprise excitation winding 1, permanent magnet 2, armature winding 3, electricity excitation part stator yoke 4, permanent magnetism partial stator yoke 5, segmented-rotor 6, every magnetic lining 7 and motor every magnetic shell body 8, it is characterized in that: 6 electric excitation part armature tooths 9 and 6 electric excitation division minute excitation teeth 10 are crisscross arranged in electric excitation part stator yoke 4, electricity excitation part armature tooth 9 is oppositely arranged respectively between two with an electric excitation division minute excitation tooth 10, on electricity excitation part armature tooth 9, circle is around armature winding 3, electricity excitation division divides on excitation tooth 10 circle around excitation winding 1, 6 permanent magnetism part armature tooths 11 and 6 permanent magnetism part excitation teeth 12 are crisscross arranged on permanent magnetism partial stator yoke 5, permanent magnetism part armature tooth 11 is oppositely arranged respectively between two with permanent magnetism part excitation tooth 12, on permanent magnetism part armature tooth 11, circle is around armature winding 3, Surface Mount permanent magnet 2 on permanent magnetism part excitation tooth 12, every magnetic lining 7, be connected with motor shaft 13, segmented-rotor 6 is stuck in magnetic lining 7 by dovetail groove 14, electricity excitation part stator yoke 4 and permanent magnetism partial stator yoke 5 are nested in motor in magnetic shell body.Described permanent magnet 2 radially magnetizes, and the permanent magnet magnetizing direction of placed adjacent is contrary.Excitation winding 1 is in series circle on electric excitation division minute excitation tooth 10, adopts and concentrates winding; In accordance with the right-hand rule, the energising direction in each excitation winding all should be identical or contrary with the magnetizing direction of permanent magnet on its corresponding permanent magnetism part excitation tooth 12.Armature winding 3 circles are divided into three-phase on the electric excitation part electric excitation part armature tooth 9 corresponding with permanent magnetism part and permanent magnetism part armature tooth 11, on relative two armature tooths circle around armature winding differential concatenation form a phase.Rotor number of poles is expanded and to be: 12/5,12/7,12/8,12/10,12/11,24/10,24/14,24/16,24/20,24/22, and before slash, be wherein stator poles, be segmented-rotor number after slash.A kind of adjustable magnetic method based on above-mentioned segmented-rotor block form mixed excited magnetic pass switch dual salient pole machine, it is characterized in that: permanent magnet 2 Surface Mounts are on 6 excitation teeth 12 of permanent magnetism part, relative with rotor, radially magnetize, the permanent magnet magnetizing direction of placed adjacent is contrary; Permanent magnetic field is closed after permanent magnet, stator yoke, air gap, segmented-rotor successively, and electricity excitation magnetic field is closed after stator yoke, air gap, segmented-rotor, by regulating excitation winding electric current can realize wide region adjustable magnetic.
Stationary part of the present invention consists of every magnetic shell body, electric excitation part stator yoke, permanent magnetism partial stator yoke, permanent magnet, excitation winding and armature winding motor.As shown in Figure 2, electricity excitation part stator yoke and permanent magnetism partial stator yoke are formed by silicon steel plate stacking, contain separately 12 tooth utmost points, by 6 armature tooths and 6 excitation teeth, be staggered, 6 armature tooths of electric excitation part and 6 excitation tooth difference circles are around armature winding and excitation winding.As shown in Figure 3, on 6 armature tooths of permanent magnetism part circle around armature winding, 6 excitation tooth Surface Mount permanent magnets.6 permanent magnets all radially magnetize, and two permanent magnet magnetizing directions of placed adjacent are contrary, and as shown by the arrows in Figure 3, excitation winding and armature winding are centralized winding, electric excitation part and a set of armature winding of permanent magnetism partial common.6 excitation winding are connected through certain way, while guaranteeing logical direct current, follow the right-hand rule, and excitation flux linkage direction is identical or contrary with corresponding permanent magnetism magnetizing direction: when direction is identical, machine operation is increasing magnetic state; During opposite direction, machine operation is in weak magnetic state.Permanent magnetic field is closed through permanent magnet one stator yoke one air gap one segmented-rotor, electricity excitation magnetic field is closed through stator yoke one air gap one segmented-rotor, because stator yoke magnetic field degree of saturation is not high, thereby change direct current size in electric magnet exciting coil, can carry out to motor the flux control of wide region.6 armature winding are divided into three-phase, on radially relative armature tooth circle around armature winding through anti-phase series connection, form a phase, if loop A l and the anti-phase series connection of A2 are A phase, the anti-phase series connection of coil Bl and B2 is B phase, the anti-phase series connection of coil Cl and C2 is C phase.
Rotor portion of the present invention is by 8 segmented-rotors of electric excitation part, 8 segmented-rotors of permanent magnetism part and form every magnetic lining.Every magnetic lining, be connected with machine shaft, segmented-rotor snaps in magnetic lining through dovetail groove.When rotor rotates, in armature winding, the magnetic linkage of linkage carries out bipolarity variation with rotor-position.In addition this rotor has the effect of constraint magnetic circuit, not only effectively shortens magnetic flux path, reduces motor iron loss, and has greatly weakened the mutual inductance between armature winding, has strengthened the fault freedom of motor.Whole rotor portion is cylinder, and the windage in the time of can reducing to rotate, is conducive to high speed operation of motor.
The present invention can be applied to other segmented-rotor block form mixed excited magnetic pass switch dual salient pole machine, as:
A. stator poles is 12 (6 armature tooths, 6 excitation teeth), and rotor number of poles (segmented-rotor piece number) is 5;
B. stator poles is 12 (6 armature tooths, 6 excitation teeth), and rotor number of poles is 7;
C. stator poles is 12 (6 armature tooths, 6 excitation teeth), and rotor number of poles is 8;
D. stator poles is 12 (6 armature tooths, 6 excitation teeth), and rotor number of poles is 10;
E. stator poles is 12 (6 armature tooths, 6 excitation teeth), and rotor number of poles is 11;
F. stator poles is 24 (12 armature tooths, 12 excitation teeth), and rotor number of poles is 10;
G. stator poles is 24 (12 armature tooths, 12 excitation teeth), and rotor number of poles is 14;
H. stator poles is 24 (12 armature tooths, 12 excitation teeth), and rotor number of poles is 16;
I. stator poles is 24 (12 armature tooths, 12 excitation teeth), and rotor number of poles is 20;
J. stator poles is 24 (12 armature tooths, 12 excitation teeth), and rotor number of poles is 22.
In above topology, a, b, e can make empty load of motor back-emf have higher sinusoidal degree, but because rotor number of poles is odd number, motor has asymmetric magnetic pull; There is not the asymmetric magnetic pull of rotor in c, d structure, but back-emf sine is to being not so good as structure a, b, e.H mono-j can make motor in back-emf sine, does not have asymmetric magnetic pull.
Claims (6)
1. a segmented-rotor block form mixed excited magnetic pass switch dual salient pole machine, comprise excitation winding (1), permanent magnet (2), armature winding (3), electricity excitation part stator yoke (4), permanent magnetism partial stator yoke (5), segmented-rotor (6), every magnetic lining (7) and motor every magnetic shell body (8), it is characterized in that: 6 electric excitation part armature tooths (9) and 6 electric excitation division minute excitation teeth (10) are crisscross arranged in electric excitation part stator yoke (4), electricity excitation part armature tooth (9) is oppositely arranged respectively between two with an electric excitation division minute excitation tooth (10), the upper circle of electricity excitation part armature tooth (9) is around armature winding (3), electricity excitation division divides the upper circle of excitation tooth (10) around excitation winding (1), 6 permanent magnetism part armature tooths (11) and 6 permanent magnetism part excitation teeth (12) are crisscross arranged on permanent magnetism partial stator yoke (5), permanent magnetism part armature tooth (11) is oppositely arranged respectively between two with permanent magnetism part excitation tooth (12), the upper circle of permanent magnetism part armature tooth (11) is around armature winding (3), the upper Surface Mount permanent magnet (2) of permanent magnetism part excitation tooth (12), every magnetic lining (7), be connected with motor shaft (13), segmented-rotor (6) is stuck in magnetic lining (7) by dovetail groove (14), electricity excitation part stator yoke (4) and permanent magnetism partial stator yoke (5) are nested in motor in magnetic shell body (8).
2. segmented-rotor block form mixed excited magnetic pass switch dual salient pole machine according to claim 1, is characterized in that: described permanent magnet (2) radially magnetizes, and the permanent magnet magnetizing direction of placed adjacent is contrary.
3. segmented-rotor block form mixed excited magnetic pass switch dual salient pole machine according to claim 1, is characterized in that: excitation winding (1) is in series circle around electric excitation division minute excitation tooth (10) above, adopts and concentrates winding; In accordance with the right-hand rule, the energising direction in each excitation winding all should be identical or contrary with the magnetizing direction of permanent magnet on its corresponding permanent magnetism part excitation tooth (12).
4. segmented-rotor block form mixed excited magnetic pass switch dual salient pole machine according to claim 1, it is characterized in that: armature winding (3) circle is divided into three-phase on the electric excitation part electric excitation part armature tooth (9) corresponding with permanent magnetism part and permanent magnetism part armature tooth (11), on relative two armature tooths circle around armature winding differential concatenation form a phase.
5. segmented-rotor block form mixed excited magnetic pass switch dual salient pole machine according to claim 1, it is characterized in that: rotor number of poles is expanded and is: 12/5,12/7,12/8,12/10,12/11,24/10,24/14,24/16,24/20,24/22, before slash, being wherein stator poles, is segmented-rotor number after slash.
6. the adjustable magnetic method based on segmented-rotor block form mixed excited magnetic pass switch dual salient pole machine claimed in claim 1, it is characterized in that: permanent magnet (2) Surface Mount is on 6 excitation teeth (12) of permanent magnetism part, relative with rotor, radially magnetize, the permanent magnet magnetizing direction of placed adjacent is contrary; Permanent magnetic field is closed after permanent magnet, stator yoke, air gap, segmented-rotor successively, and electricity excitation magnetic field is closed after stator yoke, air gap, segmented-rotor, by regulating excitation winding electric current can realize wide region adjustable magnetic.
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| CN201310012999.7A CN103929034A (en) | 2013-01-15 | 2013-01-15 | Segmented-rotor paratactic mixed excitation magnetic flow switching double-salient-pole motor |
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| CN201310012999.7A CN103929034A (en) | 2013-01-15 | 2013-01-15 | Segmented-rotor paratactic mixed excitation magnetic flow switching double-salient-pole motor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103178672A (en) * | 2013-04-08 | 2013-06-26 | 东南大学 | Stator-surface-mounted type doubly salient permanent magnet motor adopting modularized rotor |
| CN105553128A (en) * | 2016-01-25 | 2016-05-04 | 江苏大学 | Hybrid excitation flux switching motor |
| CN105634247A (en) * | 2016-01-26 | 2016-06-01 | 中国石油大学(华东) | Six-phase static sealing high-temperature superconducting motor |
| CN106787307A (en) * | 2017-03-09 | 2017-05-31 | 东南大学 | Rotor adjustable magnetic type flux switch motor |
| CN109962596A (en) * | 2019-04-26 | 2019-07-02 | 南京航空航天大学 | A kind of rotor sectional type magnetic circuit complementary type permanent magnet synchronous motor |
| CN111092499A (en) * | 2019-12-31 | 2020-05-01 | 南京航空航天大学 | Harmonic excitation electro-magnetic doubly salient motor and control method thereof |
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| CN102832768A (en) * | 2012-09-07 | 2012-12-19 | 南京航空航天大学 | Parallel hybrid excitation brushless direct-current motor |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103178672A (en) * | 2013-04-08 | 2013-06-26 | 东南大学 | Stator-surface-mounted type doubly salient permanent magnet motor adopting modularized rotor |
| CN105553128A (en) * | 2016-01-25 | 2016-05-04 | 江苏大学 | Hybrid excitation flux switching motor |
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| CN105634247A (en) * | 2016-01-26 | 2016-06-01 | 中国石油大学(华东) | Six-phase static sealing high-temperature superconducting motor |
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| CN109962596A (en) * | 2019-04-26 | 2019-07-02 | 南京航空航天大学 | A kind of rotor sectional type magnetic circuit complementary type permanent magnet synchronous motor |
| CN111092499A (en) * | 2019-12-31 | 2020-05-01 | 南京航空航天大学 | Harmonic excitation electro-magnetic doubly salient motor and control method thereof |
| CN111092499B (en) * | 2019-12-31 | 2021-11-05 | 南京航空航天大学 | Harmonic excitation electro-magnetic doubly salient motor and control method thereof |
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Application publication date: 20140716 |