CN102185451A - Segmented rotor type magnetic flux switching motor with hybrid excitation and magnetic adjustment method - Google Patents
Segmented rotor type magnetic flux switching motor with hybrid excitation and magnetic adjustment method Download PDFInfo
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- CN102185451A CN102185451A CN2011100979827A CN201110097982A CN102185451A CN 102185451 A CN102185451 A CN 102185451A CN 2011100979827 A CN2011100979827 A CN 2011100979827A CN 201110097982 A CN201110097982 A CN 201110097982A CN 102185451 A CN102185451 A CN 102185451A
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Abstract
The invention discloses a segmented rotor type magnetic flux switching motor with hybrid excitation and a magnetic adjustment method. The motor comprises a stator yoke, a permanent magnet, an exciting winding, an armature winding, a segmented rotor and a non-concentrating flux sleeve, wherein the stator yoke is of a 12-tooth structure and formed by arranging excitation teeth and armature teeth in a staggered mode; the permanent magnet is arranged in the excitation teeth, one surface of the permanent magnet is opposite to the rotor, and two sides of the permanent magnet are provided with concentrating flux bridges; the armature winding and the exciting winding are integrated windings and respectively wound on the excitation teeth and the armature teeth; the segmented rotor is arranged in the non-concentrating flux sleeve, thus the whole rotor forms a cylinder structure; the concentrating flux bridges at the two sides of the permanent magnet provide return circuits for electro-exciting magnetic fields generated by the exciting winding, thus permanent magnet magnetic fields are closed after passing through the permanent magnet, the stator yoke, air gaps and the segmented rotor in sequence, and electro-exciting magnetic fields are closed after passing through the stator yoke, the air gaps and the segmented stator; and a current of the exciting winding is adjusted to realize wide-range magnetic adjustment. The motor has the advantages of wider magnetic adjustment range, good fault-tolerant capability and small wind resistance and oil resistance and can be applied to the field of high-speed aviation.
Description
Technical field
The present invention relates to a kind of segmentation rotator type mixed excited magnetic pass switch motor and adjustable magnetic method, be applicable to composite excitation high speed aviation field.
Background technology
In recent years, along with the raising at full speed of the national life level and the level of consumption, China significantly rises for the consumption of natural energy resources, and various non-renewable energies are absolute minimizing trend gradually, and energy-saving and emission-reduction become flourishing long time problem.Therefore, motor-driven and governing system are when constantly enlarging application, and every economic and technical norms are also being carried out earth-shaking improvement and change.Extensively apply to the novel driving in fields such as social life production and military affairs, the focus that buncher has become current research.
Along with to the improving constantly and develop of permanent magnetic material performance, The Development of Permanent Magnet Machine is maked rapid progress, and has improved the power density of motor greatly, mainly is divided into rotor permanent-magnet type and stator permanent magnetic type electric.Classics 12/10 FSPM motor (the permanent magnet flux suitching type motor that France scholar E.Hoang proposes, Flux-Switching Permanent Magnet Machine) belongs to stator permanent magnetic type electric, compare with the rotor permanent magnet-type motor, permanent magnet is installed simple, heat radiation is convenient, moment of inertia is little, is suitable for high-speed cruising, the operating safety factor height.In addition, the permanent magnet flux switching electromotor also has advantages such as double polarity sine magnetic linkage, winding overhang is little, copper loss is little.Therefore, since proposing, the permanent magnet flux switching electromotor has obtained development at full speed.
Yet except that possessing above-mentioned advantage, the permanent magnet flux switching electromotor also has the total shortcoming of general magneto:
1) location torque is big.
Location torque is to cause owing to energy hunting that slot effect causes, is the high frequency period pulsating wave.For the big problem of magneto location torque, numerous solutions have been proposed at present, 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 method ... all obtained certain effect.
2) difficulty is regulated in magnetic field.
Permanent magnet flux suitching type motor is by regulating the armature winding electric current to reach the purpose of regulating magnetic field, and adjustable range is limited.In order under the prerequisite that keeps the every advantage of magnetic pass switching electromotor, to widen its adjustable magnetic scope as far as possible, to satisfy the requirement of occasions such as speed governing, generating, and further being applied to aviation field, Chinese scholars has been carried out extensive and deep research for mixed excited magnetic pass switching electromotor in recent years.
Summary of the invention
For solving the problem that difficulty is regulated in permanent magnet flux switching electromotor magnetic field, the present invention proposes a kind of segmentation rotator type mixed excited magnetic pass switch motor.
Segmentation rotator type mixed excited magnetic pass switch motor, comprise excitation winding, permanent magnet, armature winding, stator yoke, segmentation rotor and magnetic conduction sleeve not, 6 armature tooths and 6 excitation teeth is characterized in that being crisscross arranged on the stator yoke, armature tooth is oppositely arranged in twos, circle is around armature winding on the armature tooth, and circle is around excitation winding on the excitation tooth, and each excitation tooth is in placing permanent magnet near the inner radius fluting, the magnetic conduction sleeve does not link to each other with motor shaft, and the segmentation rotor is stuck in not in the magnetic conduction sleeve by dovetail groove.
Permanent magnet radially magnetizes, and the permanent magnet magnetizing direction of placed adjacent is opposite.
Excitation winding is in series circle on the excitation tooth, adopts and concentrates winding; Abide by the right-hand rule, the energising direction in each excitation winding all should be identical or opposite with the magnetizing direction of permanent magnet on its corresponding excitation tooth.
Armature winding is divided into three-phase, on relative two armature tooths circle around the armature winding differential concatenation form a phase.
The 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 wherein the slash front is a stator poles, the slash back is the piecemeal rotor bank.
The adjustable magnetic method of segmentation rotator type mixed excited magnetic pass switch motor, permanent magnet are placed on the excitation tooth respectively near in the permanent magnetism groove of inner radius, and one side is relative with rotor, radially magnetizes, and the permanent magnet magnetizing direction of placed adjacent is opposite; There is the magnetic conduction bridge in the permanent magnet both sides, and the electricity excitation magnetic field that produces for excitation winding provides the loop; The permanent magnetic field of permanent magnet is closed behind permanent magnet, stator yoke, air gap, segmentation rotor successively, and electricity excitation magnetic field is closed behind stator yoke, air gap, segmentation rotor, can realize the wide region adjustable magnetic by regulating the excitation winding electric current.
The present invention provides path by the magnetic conduction bridge on permanent magnet both sides for electricity excitation magnetic field.Because stator yoke magnetic field degree of saturation is not high, thereby changes direct current size in the electric magnet exciting coil, can carry out the magnetic field adjusting of wide region to motor.By changing magnetic conduction bridge width, can change the motor-field adjustable range, to adapt to the requirement of different occasions.
Owing to adopt this special construction of segmentation rotor, and armature winding is every the tooth coiling, thereby along with the rotor rotation, and the magnetic linkage of linkage carries out bipolarity and changes in the armature winding, and has short magnetic circuit feature, has effectively reduced the motor iron loss; This structure has certain effect of contraction to magnetic circuit simultaneously, has reduced the interaction between the winding, phase winding mutual inductance self-induction ratio is reduced to below 5%, thereby make motor itself have more excellent fault freedom, has improved the reliability of motor.
In sum, the segmentation rotator type mixed excited magnetic pass switch motor that the present invention proposes has the adjustable magnetic scope of broad and fault freedom preferably under the prerequisite of possessing permanent magnet flux switching electromotor advantage, be applicable to the aviation starting/generating system of high-speed cruising.
Description of drawings
Fig. 1 is a structural section schematic diagram of the present invention.
The number in the figure title: (1) excitation winding, (2) permanent magnet, (3) armature winding, (4) stator yoke, (5) magnetic conduction bridge, (6) segmentation rotor magnetic conductor, (7) are the magnetic conduction sleeve not;
A1, A2, B1, B2, C1, C2: armature tooth and the armature coil on the armature tooth;
F1, F2, F3, F4, F5, F6: excitation tooth and the magnet exciting coil on the armature tooth.
The direction of arrow is the permanent magnet magnetizing direction.
Embodiment
As shown in Figure 1, the present invention proposes a kind of segmentation rotator type mixed excited magnetic pass switch motor, by stator yoke, permanent magnet, excitation winding and armature winding, magnetic conduction sleeve, segmentation rotor do not constitute, wherein:
Stationary part is made of stator yoke, permanent magnet, excitation winding and armature winding.Stator yoke forms through silicon steel plate stacking, contains 12 tooth utmost points, is staggered by 6 armature tooths and 6 excitation teeth, and circle is around armature winding and excitation winding respectively.Open the permanent magnetism groove near inner radius on the excitation tooth, be used to place permanent magnet.6 permanent magnets all radially magnetize, and two permanent magnet magnetizing directions of placed adjacent are opposite, and shown in arrow among Fig. 1, the magnetic conduction bridge of certain width is left on the permanent magnet both sides, for electricity excitation magnetic field provides path.Excitation winding and armature winding are centralized winding.6 excitation winding are connected through certain way, when guaranteeing to lead to direct current, follow the right-hand rule, and excitation magnetic linkage direction is identical or opposite with corresponding permanent magnetism magnetizing direction: when direction was identical, machine operation was increasing magnetic state; When direction was opposite, machine operation was in weak magnetic state.Permanent magnetic field is through permanent magnet-stator yoke-air gap-segmentation rotor closure, electricity excitation magnetic field is through stator yoke (comprising the magnetic conduction bridge)-air gap-segmentation rotor closure, because stator yoke magnetic field degree of saturation is not high, thereby change direct current size in the electric magnet exciting coil, can carry out the magnetic field adjusting of wide region to motor.By changing magnetic conduction bridge width, can change the motor-field adjustable range.6 armature winding are divided into three-phase, on the radially relative armature tooth circle around armature winding form a phase through anti-phase series connection, as loop A 1 with A2 anti-phase series connection be A mutually, coil B1 with B2 anti-phase series connection be B mutually, coil C1 with C2 anti-phase series connection be C mutually.
But rotor portion by the segmentation rotor of 8 magnetic conductions and not the magnetic conduction sleeve constitute.The magnetic conduction sleeve does not link to each other with machine shaft, and the segmentation rotor is in dovetail groove snaps in not the magnetic conduction sleeve.During rotor rotation, the magnetic linkage of linkage carries out the bipolarity variation with rotor-position in the armature winding.This rotor has the effect of constraint magnetic circuit in addition, not only effectively shortens magnetic flux path, reduces the motor iron loss, and the mutual inductance between the armature winding of having weakened greatly, has strengthened the fault freedom of motor.Whole rotor portion is cylinder, and the windage in the time of can reducing to rotate, oil resistance help the motor high-speed cruising.
The present invention can be applied to other segmentation rotator type mixed excited magnetic pass switch motor, as:
1. stator poles is 12(6 armature tooth, 6 excitation teeth), rotor number of poles (segmentation magnetic inductive block number) is 5;
2. stator poles is 12(6 armature tooth, 6 excitation teeth), the rotor number of poles is 7;
3. stator poles is 12(6 armature tooth, 6 excitation teeth), the rotor number of poles is 8;
4. stator poles is 12(6 armature tooth, 6 excitation teeth), the rotor number of poles is 10;
5. stator poles is 12(6 armature tooth, 6 excitation teeth), the rotor number of poles is 11;
6. stator poles is 24(12 armature tooth, 12 excitation teeth), the rotor number of poles is 10;
7. stator poles is 24(12 armature tooth, 12 excitation teeth), the rotor number of poles is 14;
8. stator poles is 24(12 armature tooth, 12 excitation teeth), the rotor number of poles is 16;
9. stator poles is 24(12 armature tooth, 12 excitation teeth), the rotor number of poles is 20;
10. stator poles is 24(12 armature tooth, 12 excitation teeth), the rotor number of poles is 22.
In the above topology, 1., 2., 5. can make the empty load of motor back-emf have higher sinusoidal degree, but because the rotor number of poles is an odd number, motor have asymmetric magnetic pull; 3., 4. there is not the asymmetric magnetic pull of rotor in structure, but the back-emf sine to not as structure 1., 2., 5..6.-10. then can make motor in the back-emf sine, not have asymmetric magnetic pull.
Claims (6)
1. segmentation rotator type mixed excited magnetic pass switch motor, comprise excitation winding (1), permanent magnet (2), armature winding (3), stator yoke (4), segmentation rotor (6) and magnetic conduction sleeve (7) not, it is characterized in that be crisscross arranged on the stator yoke (4) 6 armature tooths and 6 excitation teeth, armature tooth is oppositely arranged in twos, circle is around armature winding (3) on the armature tooth, circle is around excitation winding (1) on the excitation tooth, each excitation tooth is in placing permanent magnet (2) near the inner radius fluting, magnetic conduction sleeve (7) does not link to each other with motor shaft, and segmentation rotor (6) is stuck in not in the magnetic conduction sleeve by dovetail groove.
2. segmentation rotator type mixed excited magnetic pass switch motor according to claim 1, it is characterized in that: permanent magnet (2) radially magnetizes, and the permanent magnet magnetizing direction of placed adjacent is opposite.
3. segmentation rotator type mixed excited magnetic pass switch motor according to claim 1, it is characterized in that: excitation winding (1) is in series circle on the excitation tooth, adopts and concentrates winding; Abide by the right-hand rule, the energising direction in each excitation winding all should be identical or opposite with the magnetizing direction of permanent magnet on its corresponding excitation tooth.
4. segmentation rotator type mixed excited magnetic pass switch motor according to claim 1, it is characterized in that: armature winding (3) is divided into three-phase, on relative two armature tooths circle around the armature winding differential concatenation form a phase.
5. segmentation rotator type mixed excited magnetic pass switch motor according to claim 1, it is characterized in that: the 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, wherein the slash front is a stator poles, and the slash back is the piecemeal rotor bank.
6. adjustable magnetic method based on the described segmentation rotator type of claim 1 mixed excited magnetic pass switch motor, it is characterized in that: permanent magnet (2) is placed on 6 excitation teeth respectively near in the permanent magnetism groove of inner radius, one side is relative with rotor, radially magnetize, the permanent magnet magnetizing direction of placed adjacent is opposite; There is magnetic conduction bridge (5) in the permanent magnet both sides, and the electricity excitation magnetic field that produces for excitation winding (1) provides the loop; The permanent magnetic field of permanent magnet is closed behind permanent magnet, stator yoke, air gap, segmentation rotor successively, and electricity excitation magnetic field is closed behind stator yoke, air gap, segmentation rotor, can realize the wide region adjustable magnetic by regulating the excitation winding electric current.
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| CN2011100979827A CN102185451A (en) | 2011-04-19 | 2011-04-19 | Segmented rotor type magnetic flux switching motor with hybrid excitation and magnetic adjustment method |
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| CN2011100979827A CN102185451A (en) | 2011-04-19 | 2011-04-19 | Segmented rotor type magnetic flux switching motor with hybrid excitation and magnetic adjustment method |
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| CN102593974A (en) * | 2012-03-17 | 2012-07-18 | 中国矿业大学 | Hybrid excitation switched flux motor |
| CN102751833A (en) * | 2012-07-19 | 2012-10-24 | 浙江大学 | Totally-enclosed permanent-magnet synchronous traction motor with unequal air gaps, skewed pole shoes and tangential magnetic circuit |
| CN102820715A (en) * | 2012-08-08 | 2012-12-12 | 中国电力科学研究院 | Method for reducing positioning torque of magnetic-flux switching permanent magnet motor |
| CN103151859A (en) * | 2013-02-01 | 2013-06-12 | 东南大学 | Magnetic flow switched and surface-mounted type permanent magnet memory motor |
| CN103178672A (en) * | 2013-04-08 | 2013-06-26 | 东南大学 | Stator-surface-mounted type doubly salient permanent magnet motor adopting modularized rotor |
| CN103199661A (en) * | 2013-04-25 | 2013-07-10 | 东南大学 | Built-in permanent magnet memory motor of magnetic flux switching type |
| CN103248148A (en) * | 2013-05-15 | 2013-08-14 | 东南大学 | Mixed excitation stator surface-mounted double-salient motor |
| CN103296798A (en) * | 2013-05-15 | 2013-09-11 | 东南大学 | Stator surface-mounted type doubly salient permanent magnet motor with double-speed windings |
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| CN103915920A (en) * | 2013-01-07 | 2014-07-09 | 济南吉美乐电源技术有限公司 | Segmented-rotor doubly salient motor with novel stamped plate structure |
| CN103929034A (en) * | 2013-01-15 | 2014-07-16 | 济南吉美乐电源技术有限公司 | Segmented-rotor paratactic mixed excitation magnetic flow switching double-salient-pole motor |
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| CN104821668A (en) * | 2015-04-29 | 2015-08-05 | 江苏大学 | Novel stator permanent magnet type motor |
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| CN102820715A (en) * | 2012-08-08 | 2012-12-12 | 中国电力科学研究院 | Method for reducing positioning torque of magnetic-flux switching permanent magnet motor |
| CN102820715B (en) * | 2012-08-08 | 2016-08-31 | 中国电力科学研究院 | A kind of method reducing flux switch permanent magnet motor location torque |
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Application publication date: 20110914 |