CN100444502C - Full range distribution winding and doubly salient permanent magnet motor with auxiliary exciting winding - Google Patents
Full range distribution winding and doubly salient permanent magnet motor with auxiliary exciting winding Download PDFInfo
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- CN100444502C CN100444502C CNB2006100393576A CN200610039357A CN100444502C CN 100444502 C CN100444502 C CN 100444502C CN B2006100393576 A CNB2006100393576 A CN B2006100393576A CN 200610039357 A CN200610039357 A CN 200610039357A CN 100444502 C CN100444502 C CN 100444502C
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Abstract
The present invention discloses a double-salient pole permanent-magnet motor with full range winding distribution and auxiliary exciting windings, which relates to a configuration method for an armature winding of a double-salient pole permanent-magnet motor. Stator salient poles (3) are uniformly distributed on the inner circumference of a stator (2) of the permanent-magnet motor and permanent magnets (1) which are symmetric to the circle center of the stator are arranged in pairs; a first armature winding (5) and a second armature winding (7) are in full range winding distribution on the stator (2), namely, the distance of the adjacent permanent magnets (1) is the width of two stator salient poles (3); the windings of the armature winding are distributed by crossing the two stator salient poles (3) arranged at both sides of the permanent magnet, namely, each stator slot (8) for placing the armature winding contains two windings of which the middle of each winding is provided with an empty slot and the armature winding just occupies the half slot space of the stator side. Under the condition without reducing the motor output power, the present invention can save half of a conducting body in the slot; the present invention can greatly reduce copper consumption quantity of the double-salient pole permanent-magnet motor, raise the motor efficiency and increase the motor processing efficiency.
Description
Technical field
The present invention is a kind of method of constructing about the armature winding of novel doubly-salient magneto, belongs to the technical field of design of electrical motor.
Background technology
Switched reluctance machines (Switched Reluctance Motor) has typical biconvex electrode structure, the structure of motor is simple especially, reliable, system's good speed adjustment features, efficient is higher, cost is low, therefore caused increasing researcher's attention after the sixties in last century, switched reluctance machines has obtained practical application in many occasions now, has brought in one seat in the buncher field of fast development.But along with going deep into of research, some inherent shortcomings of switched reluctance machines also progressively display.At first, only energising could produce positive torque to switched reluctance machines to winding when winding inductance increases with rotor position angle, thereby two intervals that may be used for producing torque in turn-on cycle have only one to obtain utilizing, and operational efficiency and stock utilization are relatively low; Secondly, switched reluctance machines is a kind of monolateral excitation electromotor in essence, not only comprises torque component in the winding current, also has excitation component, has so not only increased the voltammetric capacity of winding and power inverter, also can produce extra supplementary load loss; Moreover winding inductance is bigger, and it is slow to turn-off the after-current decay, is extended to negative torque district for avoiding winding to turn-off after-current, winding must be turn-offed in advance, thereby slacken motor and exert oneself, or the like.In order to overcome the shortcoming of switched reluctance machines, keep this extremely simple structural shape of the biconvex utmost point simultaneously, professor T.A.Lipo of U.S. Wisconsin-Madison university equals at first to have introduced the high-performance permanent magnet beginning of the nineties in switched reluctance machines, thereby has produced so-called doubly salient permanent magnet motor.Kept whole characteristics of switched reluctance machines on the doubly salient permanent magnet motor structure, promptly rotor is salient pole, has not both had winding on the rotor and has not also had permanent magnet, and simple in structure, firm, the high-speed cruising ability is strong; Lay centralized winding on the stator poles, the end of winding is short, economizes copper, and loss is little, the efficient height.Different with switched reluctance machines, permanent magnet has been placed by doubly salient permanent magnet motor stator yoke portion, in motor gas-gap, set up permanent magnetic field, the permanent magnetism magnetic linkage of every phase winding institute linkage changes with rotor-position, when of the be changed to timing of permanent magnetism magnetic linkage with rotor position angle, in corresponding winding, feed forward current, and when magnetic linkage with the rate of change of rotor-position when negative, in corresponding winding, feed negative current, all can produce positive torque, thereby two intervals that can produce torque have all obtained utilization in a turn-on cycle.In addition, owing to embedded the very low permanent magnet of magnetic permeability in stator core, winding inductance greatly reduces, and winding current is commutated fast becomes possibility.Like this, doubly salient permanent magnet motor has just in time remedied the deficiency of switched reluctance machines, has the power density height, and the efficient height is simple in structure, controls advantages such as flexible.
After magneto comprises that a common defects of doubly salient permanent magnet motor is that in case the electric machine structure size is selected, be difficult to the magnetic field of motor is regulated and controlled, this has limited the application of magneto in many instances, for example, need the generator of adjustable side voltage, need the wide range speed control motor of weak magnetism speed expansion operation.For this reason, existing having researched and proposed doubly salient permanent magnet motor additional electrical excitation winding is that the method for composite excitation is carried out weak magnetic control system to motor.But, existing two windings in the doubly salient permanent magnet motor stator slot, increase excitation winding and have very big difficulty, the one, increase the difficulty of processing unwrapping wire, the 2nd, the utilance of reduction slot space, the 3rd, the stator slot that needs to increase excitation winding certainly will need to expand segment space, causes the stator magnetic circuit of motor and stator poles shape asymmetric, and back-emf, inductance produce deviation and then influence control precision between phase and phase to make polyphase machine.
Summary of the invention
Technical problem: the doubly salient permanent magnet motor that the objective of the invention is to propose a kind of range distributed winding and band additive excitation winding, the doubly salient permanent magnet motor of employing range distributed winding can be under the condition that does not reduce the motor power output, save the groove inner wire of half, significantly reduce the motor copper consumption on the whole, improve efficiency of motor, improve the efficient of motor processing.
Technical scheme: the doubly salient permanent magnet motor of range distributed winding of the present invention and band additive excitation winding is made up of stator, rotor and the permanent magnet, first armature winding, second armature winding, the excitation winding that are fixed on the stator; Uniform stator salient poles on the inner periphery of stator wherein, permanent magnet is symmetrical in the center of circle of stator and arranges in pairs; On stator, first armature winding, second armature winding are the range distributed winding, and the distance that promptly keeps adjacent permanent magnet is two stator salient poles; Two stator salient poles that the armature winding coil is striden the permanent magnet both sides distribute, and promptly each is laid in the stator slot of armature winding and holds two coils, then have a dead slot, armature winding only to take half slot space of stator side in the middle of each coil.The coil both sides of excitation winding are distributed in the adjacent dead slot, and every groove only has a coil, and all coils polyphone is formed the additive excitation winding.
Be illustrated in figure 1 as stator 4 utmost points/rotor 6 utmost point range distributed winding doubly salient permanent magnet motors, stator side is evenly distributed with four stator poles, two permanent magnets lay respectively at stator yoke portion, two stator poles (tooth) at interval each other, and the pole span of motor equals two stator poles (tooth) like this.The range distributed winding is striden two stator poles (tooth) from A+ to A-.The groove that groove is adjacent can be inserted the additive excitation winding therewith, and span also is two stator poles (tooth).Structure to the range distributed winding can be promoted, make the distance of adjacent permanent magnet stride two stator poles (tooth) all the time, the span that the pole span of motor equals permanent magnet also is two stator poles (tooth), all armature winding are placed every a groove, this groove of vacating then is used for placing excitation winding, so, stator 8 utmost points/rotor 12 utmost point range distributed winding doubly salient permanent magnet motors just as shown in Figure 2.
Beneficial effect: range distributed winding doubly salient permanent magnet motor both can be used as the generator of high power density, for example wind-driven generator, aerogenerator or naval vessels generator etc., the motor that can be used as big torque output and wide speed regulating range again, for example electric motor car, lathe driving etc.
1, under the situation that does not reduce the motor power output, make armature winding quantity reduce 1/2nd, the conductor of armature winding in groove reduces half, reduced the motor copper consumption on the whole, armature resistance descends to some extent, and efficient increases, and the motor course of processing is efficient more, simple;
2, can increase the additive excitation winding according to actual needs, can not take the armature winding slot space, make motor stator flute profile and stator salient poles shape keep best.
3, additive excitation winding feeding direct current can carry out weak magnetic control system, enlarges the constant-power speed regulation scope of motor, also can increase magnetic control system, satisfies the requirement of low speed high torque load.
4, during generator operation by the size of current and the direction of control additive excitation winding, can control generator voltage.
The doubly salient permanent magnet motor of employing range distributed winding can be under the condition that does not reduce the motor power output, save the groove inner wire of half, though winding overhang length increases to some extent, the axial length of considering most of occasion motors is greater than diameter, thereby significantly reduced the motor copper consumption on the whole, improved efficiency of motor.The employing of range distributed winding also makes the quantity of armature winding compare minimizing 1/2nd with former scheme, improved the efficient of motor processing, and every groove winding quantity only is one, can further improve the utilance of groove area.In addition, after adopting the range distributed winding, the groove that half quantity will be arranged is empty, these slot spaces can be used for laying the additive excitation winding, feeding direct current can produce degaussing or increase magnetic action, motor is carried out stepless weak magnetic control system, the speed adjustable range of increasing motor or the output end voltage of regulator generator.
Description of drawings
Fig. 1 is the structure chart of stator 4 utmost points/rotor 6 utmost point range distributed winding doubly salient permanent magnet motors;
Fig. 2 is the structure chart of stator 8 utmost points/rotor 12 utmost point range distributed winding doubly salient permanent magnet motors;
Fig. 3-6 is based on the oscillogram that obtains of magnetic field FEM (finite element) calculation, wherein:
Fig. 3 is that 4/6 utmost point range distributed winding doubly salient permanent magnet motor A phase magnetic permanent magnetism chain changes;
Fig. 4 is the unloaded counter potential waveform of 4/6 utmost point range distributed winding doubly salient permanent magnet motor;
Fig. 5 be 4/6 utmost point doubly salient permanent magnet motor concentrate winding and range distributed winding scheme the Flux-MMF curve ratio;
Fig. 6 is that the range distributed winding doubly salient permanent magnet motor of 4/6 utmost point band additive excitation winding passes to the unloaded counter potential waveform that obtains under the different weak magnetic direct currents.
Have among the above figure: permanent magnet 1, stator 2, stator salient poles 3, rotor 4, first armature winding 5, excitation winding 6, second armature winding 7, stator slot 8.A+-A-is the two ends of first armature winding 5, and B+-B-is the two ends of second armature winding 7, and F-F is the two ends of excitation winding 6.
Embodiment
The doubly salient permanent magnet motor of range distributed winding of the present invention and band additive excitation winding is made up of stator 2, rotor 4 and the permanent magnet 1, first armature winding 5, second armature winding 7, the excitation winding 6 that are fixed on the stator 2; Uniform stator salient poles 3 on the inner periphery of stator 2 wherein, permanent magnet 1 is symmetrical in the center of circle of stator 2 and arranges in pairs; On stator 2, first armature winding 5, second armature winding 7 are the range distributed winding, the distance that promptly keeps adjacent permanent magnet 1 is two stator salient poles 3, two stator salient poles 3 that the armature winding coil is striden permanent magnet 1 both sides distribute, be that each is laid in the stator slot 8 of armature winding and holds two coils, then there are a dead slot, armature winding only to take half slot space of stator side in the middle of each coil.The coil both sides of excitation winding 6 are distributed in the adjacent dead slot, and every groove only has a coil, and all coils polyphone is formed the additive excitation winding.
With single-phase stator 4 utmost points/rotor 6 utmost point motors is example, and its sectional view has 4 equally distributed utmost points as shown in Figure 1 on the stator, 6 equally distributed utmost points are arranged on the rotor.The silicon steel sheet that with thickness is 0.5mm is washed into stator punching and rotor punching by shape shown in Figure 1, punching with capacity laminates into stator core and rotor core, in stator core, arrange 2 permanent magnets, permanent magnet is two stator poles (tooth) at interval, an armature winding groove is at interval placed, dead slot between the armature winding is used for laying the additive excitation winding, and motor has armature winding and excitation winding that two ranges distribute like this, can constitute single-phase or two-phase magnetic field scalable motor.
Below be a design parameter that rated power is the 1.5KW doubly salient permanent magnet motor:
When winding is concentrated in employing, four utmost points of stator will respectively have an armature winding, the number of turn of each winding is 60 circles, aspectant two windings in series that extremely go up are formed a phase, form another phase after two windings in series that extremely go up in addition, so whenever, the total number of turns that is in series is 120 circles/phase, because phase phasic difference 180 degree of two-phase can form single-phase output with this two-phase differential concatenation.After adopting the range distributed winding, between stator poles in four grooves two grooves adjacent with permanent magnetism vacate or be used for laying the additive excitation winding, two grooves are used for laying armature winding in addition, two armature winding can be formed two-phase, every have an armature winding mutually, the series connection total number of turns is 60 circles/phase, because phase phasic difference 180 degree of two-phase can form single-phase output with this two-phase differential concatenation.Above-mentioned two kinds of schemes are carried out magnetic field calculation with Finite Element Method, can obtain both permanent magnetism magnetic linkages, unloaded counter potential waveform respectively, as shown in Figure 3 and Figure 4.As seen from Figure 3, adopting the phase magnetic linkage of range distributed winding motor no longer is unidirectional variation, but has formed from just changing to positive two-way magnetic linkage from negative to negative again, and the peak-to-peak value that magnetic linkage changes equates with the peak-to-peak value of concentrated winding.In fact the variation of both magnetic linkages just differs a deviant, and the rule that magnetic linkage changes is in full accord, also just is understood that so both unloaded counter potential waveforms are just the same, as shown in Figure 4.Can be used for weighing the size of the output average torque of motor by Flux-MMF figure shown in Figure 5, Flux-MMF figure shows that the average torque that range distributed winding and concentrated winding are produced equates (area that both surrounded is equal substantially) substantially.Fig. 6 has then shown when unloaded the situation that magnetic or demagnetizing effect are regulated back-emf that increases by excitation winding.
Claims (2)
1, the doubly salient permanent magnet motor of a kind of range distributed winding and band additive excitation winding is characterized in that this magneto is made up of stator (2), rotor (4) and the permanent magnet (1), first armature winding (5), second armature winding (7), the excitation winding (6) that are fixed on the stator (2); Uniform stator salient poles (3) on the inner periphery of stator (2) wherein, permanent magnet (1) is symmetrical in the center of circle of stator (2) and arranges in pairs; On stator (2), first armature winding (5), second armature winding (7) are the range distributed winding, the distance that promptly keeps adjacent permanent magnet (1) is two stator salient poles (3), two stator salient poles (3) that the armature winding coil is striden permanent magnet (1) both sides distribute, be to hold two coils in each stator slot of laying armature winding (8), then there are a dead slot, armature winding only to take half slot space of stator side in the middle of each coil.
2, the doubly salient permanent magnet motor of range distributed winding according to claim 1 and band additive excitation winding, the coil both sides that it is characterized in that excitation winding (6) are distributed in the adjacent dead slot, every groove only has a coil, and all excitation winding pole coil polyphones are formed the additive excitation winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100393576A CN100444502C (en) | 2006-04-07 | 2006-04-07 | Full range distribution winding and doubly salient permanent magnet motor with auxiliary exciting winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100393576A CN100444502C (en) | 2006-04-07 | 2006-04-07 | Full range distribution winding and doubly salient permanent magnet motor with auxiliary exciting winding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1845428A CN1845428A (en) | 2006-10-11 |
| CN100444502C true CN100444502C (en) | 2008-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100393576A Expired - Fee Related CN100444502C (en) | 2006-04-07 | 2006-04-07 | Full range distribution winding and doubly salient permanent magnet motor with auxiliary exciting winding |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100472071C (en) * | 2007-06-27 | 2009-03-25 | 何世政 | Refrigeration compressor |
| CN110798042B (en) * | 2019-12-11 | 2021-03-12 | 山东理工大学 | Motor for reducing armature reaction distortion for electric automobile |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5672925A (en) * | 1992-08-06 | 1997-09-30 | Electric Power Research Institute, Inc. | Doubly salient variable reluctance machine with stationary permanent magnets or auxiliary field windings |
| CN2376125Y (en) * | 1999-05-14 | 2000-04-26 | 石正铎 | Stator structure of permasyn motor |
| CN1255766A (en) * | 1999-12-08 | 2000-06-07 | 东南大学 | Double-feed brush-free DC motor with dual salient poles |
-
2006
- 2006-04-07 CN CNB2006100393576A patent/CN100444502C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5672925A (en) * | 1992-08-06 | 1997-09-30 | Electric Power Research Institute, Inc. | Doubly salient variable reluctance machine with stationary permanent magnets or auxiliary field windings |
| CN2376125Y (en) * | 1999-05-14 | 2000-04-26 | 石正铎 | Stator structure of permasyn motor |
| CN1255766A (en) * | 1999-12-08 | 2000-06-07 | 东南大学 | Double-feed brush-free DC motor with dual salient poles |
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| CN1845428A (en) | 2006-10-11 |
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Assignee: Nantong Weike Electromechanical Manufacturing Co., Ltd. Assignor: Southeast University Contract fulfillment period: 2009.3.12 to 2015.3.12 contract change Contract record no.: 2009320000402 Denomination of invention: Full range distribution winding and doubly salient permanent magnet motor with auxiliary exciting winding Granted publication date: 20081217 License type: Exclusive license Record date: 2009.3.18 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.3.12 TO 2015.3.12; CHANGE OF CONTRACT Name of requester: NANTONG WEIKE MACHANICAL MANUFACTURING CO., LTD Effective date: 20090318 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081217 Termination date: 20170407 |