CN204131350U - Bimorph transducer simplex winding vernier magneto - Google Patents
Bimorph transducer simplex winding vernier magneto Download PDFInfo
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- CN204131350U CN204131350U CN201420383686.2U CN201420383686U CN204131350U CN 204131350 U CN204131350 U CN 204131350U CN 201420383686 U CN201420383686 U CN 201420383686U CN 204131350 U CN204131350 U CN 204131350U
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Abstract
The utility model discloses a kind of bimorph transducer simplex winding vernier magneto, comprising: rotor, it is annular, and in ring body circumference, interval is furnished with multiple permanent magnet, produces excitation field; Stator, it is different two of diameter, two stators are all cylindrical and arrange in coaxial inside and outside socket, described rotor coaxial is sleeved between this two stator, multiple groove is all had on described external stator 2 cylindrical shell internal perisporium He on internal stator cylindrical shell periphery wall, bossing between each groove forms stator tooth, and the groove groove number on two stators is identical, and the wherein stator tooth of stator tooth and the external stator 2 of internal stator apart half slot-pitch angle in the circumferential; It is characterized in that, in the stator slot of one of them stator only in both described internal stator and external stator 2, stator winding is set.The utility model by arranging winding in the stator slot of an only stator wherein, thus solves that existing bimorph transducer vernier motor internal stator cooling structure is complicated, heat radiation suffering and the not high problem of reliability.
Description
Technical field
The utility model belongs to vernier motor field, is specifically related to a kind of bimorph transducer simplex winding vernier magneto.
Background technology
When invariablenes turning speed, the torque of motor is relevant with its unloaded back-emf size, and for traditional motor, the number of pole-pairs of stators and rotators is identical, and increase number of poles can reduction stator magnetic linkage in proportion, thus do not improve unloaded back-emf by increasing number of poles.
Vernier motor (Vernier Machine) is in recent years subject to industry and more and more payes attention to, and the topological structure of such motor has that power density is high, the simple advantage of mechanical structure, is expected to obtain large-scale engineering applications.As shown in Figure 1, the similar of existing vernier motor and common magneto, is made up of rotor and stator, and the topmost feature of vernier motor is that the number of pole-pairs of its rotor is different, and the number of pole-pairs of rotor is several times of stator poles logarithm usually.In invariablenes turning speed situation, the many alternative frequencies that can improve stator magnetic linkage of rotor pole logarithm, the number of pole-pairs of stator makes stator magnetic linkage can not reduce in proportion because rotor number of poles increases less simultaneously, this feature solves conventional motors and increases the problem that number of pole-pairs can reduce stator magnetic linkage in proportion, thus magnetic linkage alternative frequency and stator magnetic linkage product can be increased, and then increase unloaded back-emf, increase torque and power density.
The major defect of existing vernier motor is that its power factor is low, when causing given power output, drives current transformer desired volume to increase, thus brings cost to raise, the problems such as system operation reliability reduction.The reason that vernier magneto power factor is low is relevant with (main magnetic linkage)/(product of motor inductances and phase current), and the power factor of this ratio more heavy motor is lower.Compared with conventional motors, vernier motor rotor number of poles is a lot, close with the number of teeth, as seen from Figure 1, a large amount of magnetic flux directly passes through stator teeth from magnetic pole through air gap, then returns another magnetic pole, and does not have and stator winding interlinkage, therefore belonging to leakage flux, this feature makes permanent magnet leakage flux compare common electric machine to be increased greatly.Meanwhile, when adjacent permanent magnet one is in the face of stator teeth, one will in the face of stator slot, and the magnetic circuit reluctance that adjacent permanent magnet is formed is large, causes main flux very low, so existing vernier motor power factor is very low.In fact, when adopting the electric loading close with conventional permanent magnet motor, the vernier motor power factor of prior art can be low to moderate 0.2 ~ 0.3, and the power factor of conventional permanent magnet motor can reach more than 0.90.
A kind of radial magnetic field double-stator structural electromotor is disclosed, as shown in Figure 2 in CN103178668A.This structure is made up of two stators and a rotor 3 ', and rotor 3 ' is in the middle of external stator 2 ' and internal stator 5 ', and three is concentric shafts, and this topology is containing two air gap.Stator winding adopts single-phase or polyphase windings, (Fig. 2 only depicts the live part of winding 3 ', and end does not draw); Rotor permanent magnet 1 ' adopts built-in, cutting orientation magnetizing, and as shown by arrows, inside and outside two stators have identical stator poles and groove number to permanent magnet 1 ' magnetic direction, can have the combination of multiple rotor number of poles and number of stator slots.In above-mentioned electric machine structure, internal stator tooth differs half slot-pitch angle with external stator 2 ' tooth at circumferencial direction, and namely internal stator tooth is relative with external stator 2 ' groove.Again because rotor pole logarithm is close with the stator number of teeth, so, internal stator tooth and external stator 2 ' tooth respectively with adjacent pole shoe relative as shown in Figure 2, adjacent permanent magnet 1 ' is ' faced by ' stator tooth that magnetic resistance is little simultaneously, the magnetic flux that adjacent pole produces, by entering inside and outside two stators respectively, greatly reduces leakage flux, utilizes this magnet modes of emplacement can also realize poly-magnetic effect in addition, substantially increase main flux, thus improve power factor.
But this bimorph transducer vernier magneto internal stator 5 ' heat radiation difficulty, especially water-cooled bimorph transducer vernier magneto, its internal stator 5 ' cooling structure is complicated.In addition, internal stator winding 6 ' end is longer makes rotor supports complicated in mechanical structure, reliability decrease, finds that the unreliable of rotor supporting structure directly increases assembly difficulty, considerably increase the failure rate of whole motor simultaneously in Practical Project.
Utility model content
For above defect or the Improvement requirement of prior art, the utility model provides a kind of bimorph transducer simplex winding vernier magneto, it is by arranging winding in the stator slot of an only stator wherein, thus solve that existing bimorph transducer vernier motor internal stator cooling structure is complicated, heat radiation suffering and the not high problem of reliability.
According to an aspect of the present utility model, a kind of bimorph transducer simplex winding vernier magneto is provided, comprises:
Rotor, it is annular, and in ring body circumference, interval is furnished with multiple permanent magnet, produces excitation field;
Stator, it is different two of diameter, two stators are all cylindrical and arrange in coaxial inside and outside socket, described rotor coaxial is sleeved between this two stator, multiple groove is all had on described external stator cylindrical shell internal perisporium He on internal stator cylindrical shell periphery wall, bossing between each groove forms stator tooth, and the groove groove number on two stators is identical, and the wherein stator tooth of stator tooth and the external stator of internal stator apart half slot-pitch angle in the circumferential;
It is characterized in that, in the stator slot of one of them stator only in described internal stator and external stator, stator winding is set.
As improvement of the present utility model, the stator tooth of described internal stator and the groove of external stator are just to layout.
As improvement of the present utility model, described motor with adding diamagnetic material (as superconduction block material) in the stator slot of winding, does not strengthen its magnetic field modulation effect.
As improvement of the present utility model, described each permanent magnet is by pole piece spacing, and each pole shoe is connected by silicon steel bridge or non-magnet material.
As improvement of the present utility model, described rotor is one-body molded, and described permanent magnet is contained in the groove that on rotor, circumference is arranged.
As improvement of the present utility model, described external stator is fixed on casing, and described internal stator is fixed by stationary axle or support arm.
As improvement of the present utility model, described rotor shaft is fixedly connected with the torque tube be arranged in rotating shaft by axial bolt.
As improvement of the present utility model, described torque tube is that one end is fixed on cantilever structure in rotating shaft or is fixedly supported on structure on stationary axle rotatably by bearing for one end is fixed on the other end in rotating shaft.
According to another aspect of the present utility model, provide the application of a kind of above-mentioned bimorph transducer vernier motor in wind generator system or Marine power plant.
In general, the above technical scheme conceived by the utility model compared with prior art, has following beneficial effect:
(1) the utility model gathers magnetic mode by rotor, promote permanent magnet excitation magnetic field, improve power factor, further raising torque density, while overcoming the low problem of existing single stator single rotor vernier magneto power factor, solve the problem that existing bimorph transducer vernier permanent magnet motor structure is complicated, internal stator heat radiation is difficult, have huge practical potentiality.After adopting radial magnetic field double-stator simplex winding structure, when close with the torque density of traditional vernier motor, power factor significantly improves, and can reach more than 0.8, and electric motor internal stator does not need the special type of cooling simultaneously.
(2) the utility model eliminates one of them stator winding, only retains a stator winding, and stator tooth slot structure retains, and it only plays magnetic field modulation effect.First, cooling structure can be made more simple, also reduce rule difficulty simultaneously.Secondly, the utility model motor directly can adopt the cooling structure of conventional motors, simply ripe, can give full play to the torque output capability of motor, under research display same volume, bimorph transducer simplex winding vernier magneto Driving Torque can reach three times of conventional motors.Simultaneously because there is no stator winding, simplify processing technology, and because not needing to consider that internal stator winding taken up space, so be easy to the bilateral support structure realizing rotor, greatly increase reliability of structure.
Accompanying drawing explanation
Fig. 1 is traditional vernier motor structural representation.
Fig. 2 is bimorph transducer vernier motor structural representation of the prior art.
Fig. 3 is the structural representation of the bimorph transducer simplex winding vernier magneto according to the utility model embodiment.
Fig. 4 is the structural representation cancelling the bimorph transducer simplex winding vernier magneto that winding decided at the higher level but not officially announced retains according to the utility model embodiment China and foreign countries stator winding.
Fig. 5 is the structural representation of the bimorph transducer simplex winding vernier magneto adding superconduction block material 5 according to the internal stator of the utility model embodiment.
Fig. 6 is the magnetic line of force distribution schematic diagram of the bimorph transducer simplex winding vernier magneto according to the utility model embodiment.；
Fig. 7 is the perspective view of the bimorph transducer simplex winding vernier magneto according to the utility model embodiment.
Fig. 8 (a)-(d) is the multiple bimorph transducer simplex winding vernier magneto mechanical structure schematic diagrames according to the utility model embodiment.
Embodiment
In order to make, the purpose of this utility model, technical scheme and effect are more clear to be understood, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, following examples are only for explaining the utility model, do not form restriction of the present utility model.In addition, if below in described each execution mode of the utility model involved technical characteristic do not form conflict each other and just can mutually combine.
As shown in Figure 3, the bimorph transducer simplex winding vernier magneto of the utility model embodiment, it is by external stator 2, and rotor 3 and internal stator 5 form.Wherein, two stators are coaxially socketed, and rotor 3 coaxial sleeve is between two stators, and permanent magnet 1 cutting orientation magnetizing is embedded in rotor core.External stator 2 has armature winding 4, and internal stator 5 only plays the effect forming magnetic circuit without winding.Internal stator 5 has differed half slot-pitch angle in a circumferential direction with external stator 2 teeth portion, namely internal stator 5 tooth is relative with external stator 2 groove, again because rotor 3 number of poles is close with the stator number of teeth, so, internal stator 5 tooth and external stator 2 tooth rotor 3 pole shoe respectively with adjacent is relative, as shown in Figure 3, adjacent permanent magnet 1 is ' faced by ' stator tooth that magnetic resistance is little simultaneously, the magnetic flux that adjacent pole produces will enter inside and outside two stators respectively, greatly reduce leakage flux, utilize magnet modes of emplacement to realize poly-magnetic effect in addition, substantially increase main flux, improve power factor.Fig. 6 is the magnetic line of force distribution schematic diagram of the bimorph transducer simplex winding vernier magneto according to the utility model embodiment.Fig. 7 is the perspective view of the bimorph transducer simplex winding vernier magneto according to the utility model embodiment.
The present embodiment rotor permanent magnet 1 preferably adopts built-in, cutting orientation magnetizing, inside and outside two stators preferably have identical stator poles and groove number, can have the combination of multiple rotor number of poles and number of stator slots, the vernier motor in Fig. 3 of the present embodiment preferably has 44 rotor poles, 4 stator poles and 24 grooves.
The present embodiment vernier motor adjacent pole magnetic circuit is specially: the teeth portion of first passing internal stator 5 from internal stator 5 yoke portion, again through the air gap internal stator 5 and rotor 3, then through pole shoe and the air gap external stator 2 and rotor 3, and external stator 3 teeth portion is to the yoke portion of external stator 3.
Internal stator 5 surround by rotor 3, internal stator 5 thermal source can only be delivered to rotor 3 by interior air gap, and then pass to external stator 2 through outer air gap, dispel the heat eventually through casing 10, internal stator 5 like this dispels the heat very difficult, if do not installed internal stator 5 cooling duct additional, easily cause internal stator 5 temperature rise to exceed standard, and external stator 2 temperature rise surplus is comparatively large, in order to meet temperature increase requirement, have to reduce electric loading, sacrifice motor performance.If install internal stator 5 cooling duct additional, greatly will increase structural complexity, reduce whole motor reliability.
Adopt the structure of this bimorph transducer simplex winding, the ingenious external stator 2 that make use of is total to magnetic circuit with internal stator 5 magnetic field, same electrical load produces the same feature of the ability of torque at external stator 2 and internal stator 5 and magnetic fields, remove internal stator winding 6, internal stator winding 6 electric loading is transferred to external stator 2, ensure that bimorph transducer simplex winding and existing double winding scheme have identical even higher electric loading (external stator more easily dispels the heat), also just ensure that overall torque output capability is constant even to increase, eliminate the copper loss of internal stator 5 simultaneously, also (iron loss proportion is smaller to be just equivalent to eliminate internal stator 5 main heating source, and ferromagnetic medium permission temperature rise is also higher), this addresses the problem internal stator 5 to dispel the heat the problem that difficulty brings overall performance to reduce.
As shown in Figure 4, the motor in the utility model also can adopt external stator winding to cancel, the mode that internal stator winding 6 retains.Internal stator 5 has armature winding 6, and external stator 2 only plays the effect forming magnetic circuit without winding.Internal stator 5 differs half slot-pitch angle in a circumferential direction with external stator 2 teeth portion, and namely internal stator 5 tooth is relative with external stator 2 groove, again because rotor 3 number of poles is close with the stator number of teeth, so internal stator 5 tooth and external stator 2 tooth rotor 3 pole shoe respectively with adjacent is relative.
As shown in Figure 5, in another embodiment of the present utility model, diamagnetic material 7 (as superconduction block material) can also be added, to strengthen its magnetic field modulation effect in the stator slot of the stator (being in the present embodiment in internal stator 5) without winding.
Fig. 8 (a)-(d) is the bimorph transducer simplex winding vernier magneto mechanical structure according to the utility model embodiment.Stator vernier magneto contains bimorph transducer and a rotor.Fig. 8 (a)-(d) gives four kinds of mechanical structure signals, but the utility model is not limited to this several mechanical structure, and other similar structures are also at protection range of the present utility model.
Fig. 8 (a) is cantilever beam structure, and rotor 3 is connected by axial bolt with torque tube 9, and torque tube 9 is cantilever beam form, and external stator 2 is fixedly installed on casing 10, and internal stator 5 is fixedly installed on stationary axle 8 by bracing frame.There is support the axial both sides of Fig. 8 (b) rotor, namely rotor 3 is fixed by the bracing frame at axial two ends after utilizing axial bolt to connect by torque tube 9, external stator 2 is fixedly installed on casing 10, and internal stator 5 is fixedly installed on stationary axle 8 by bracing frame.In Fig. 8 (c), internal stator 5 is placed on stationary axle 8, stationary axle 8 is fixedly installed on casing 10, now without the need to stationary axle, rotor structure and Fig. 8 (a) similar.Stator structure in Fig. 8 (d) is identical with Fig. 8 (a), and the live part of rotor 3 is connected with torque tube 9, without the need to beating bolt hole again on this construction rotor 3 pole shoe by the pressure of two bearings.
As a kind of electromechanical energy conversion device, the generation of motor torque can ascribe stator rotating magnetic field to and interaction rotor driven in rotor field rotates (motor), and in order to produce constant torque, two rotating magnetic field numbers of poles must be the same.Vernier motor only need meet rotor number of pole-pairs sum and equal groove number and can realize its function.Specifically, the magnetic field that rotor permanent magnet 1 produces and stator teeth groove interact, produce a lot of magnetic field harmonics, when meeting rotor number of pole-pairs sum and equaling this condition of number of stator slots, in the air-gap field that rotor permanent magnet 1 produces, the harmonic field content identical with stator poles is very large, and the magnetic field interaction that now this harmonic field and stator produce produces constant torque, thus realizes power generation.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (8)
1. a bimorph transducer simplex winding vernier magneto, comprising:
Rotor (3), it is annular, and in ring body circumference, interval is furnished with multiple permanent magnet (1), produces excitation field;
Stator (2,5), it is different two of diameter, two stators are all cylindrical and arrange in coaxial inside and outside socket, described rotor (3) coaxial package is between this two stator, multiple groove is all had on external stator (2) cylindrical shell internal perisporium He on internal stator (5) cylindrical shell periphery wall, bossing between each groove forms stator tooth, groove groove number on two stators is identical, and wherein the stator tooth of the stator tooth of internal stator (5) and external stator (2) in the circumferential at a distance of half slot-pitch angle;
It is characterized in that, in the stator slot of one of them stator only in both described internal stator (5) and external stator (2), stator winding (6) is set.
2. a kind of bimorph transducer simplex winding vernier magneto according to claim 1, wherein, the stator tooth of described internal stator (5) and the groove of external stator (2) are just to layout.
3. a kind of bimorph transducer simplex winding vernier magneto according to claim 1, wherein, described motor not with adding diamagnetic material (7) in the stator slot of winding, to strengthen its magnetic field modulation effect.
4. a kind of bimorph transducer simplex winding vernier magneto according to any one of claim 1-3, wherein, described each permanent magnet is by pole piece spacing, and each pole shoe is connected by silicon steel bridge or non-magnet material.
5. a kind of bimorph transducer simplex winding vernier magneto according to any one of claim 1-3, wherein, described rotor (3) is one-body molded, and described permanent magnet (1) is contained in the groove of the upper circumference setting of rotor (3).
6. a kind of bimorph transducer simplex winding vernier magneto according to any one of claim 1-3, wherein, described external stator (2) is fixed on casing, and described internal stator (5) is fixed by stationary axle or support arm.
7. a kind of bimorph transducer simplex winding vernier magneto according to any one of claim 1-3, wherein, described rotor (3) rotating shaft is fixedly connected with the torque tube be arranged in rotating shaft (9) by axial bolt.
8. a kind of bimorph transducer simplex winding vernier magneto according to claim 7, wherein, described torque tube (9) is fixed on cantilever structure in rotating shaft for one end or is fixedly supported on structure on stationary axle rotatably by bearing for one end is fixed on the other end in rotating shaft.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420383686.2U CN204131350U (en) | 2014-07-11 | 2014-07-11 | Bimorph transducer simplex winding vernier magneto |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420383686.2U CN204131350U (en) | 2014-07-11 | 2014-07-11 | Bimorph transducer simplex winding vernier magneto |
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| CN204131350U true CN204131350U (en) | 2015-01-28 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104113173A (en) * | 2014-07-11 | 2014-10-22 | 华中科技大学 | Double-stator single-winding vernier permanent magnet motor |
| CN104795917A (en) * | 2015-03-17 | 2015-07-22 | 华中科技大学 | Multi-phase motor winding mechanism |
| CN105006932A (en) * | 2015-08-03 | 2015-10-28 | 苏州威莫磁力传动技术有限公司 | Dual-stator rotating motor |
| CN107492998A (en) * | 2017-07-31 | 2017-12-19 | 湖北江鹏新能源汽车科技有限公司 | Double-stator Permanent Magnet Synchronous Motor |
| CN107733195A (en) * | 2017-12-01 | 2018-02-23 | 林先敏 | Cantilevered multiple stators motor |
| WO2021104123A1 (en) * | 2019-11-27 | 2021-06-03 | 南方电机科技有限公司 | Motor and device comprising said motor |
| CN113285578A (en) * | 2021-06-09 | 2021-08-20 | 东南大学 | Static seal excitation single-loop superconducting magnetic gear motor and application |
| CN114050704A (en) * | 2021-11-23 | 2022-02-15 | 西安交通大学 | Built-in permanent magnet variable voltage frequency converter based on magnetic field modulation principle and design method |
-
2014
- 2014-07-11 CN CN201420383686.2U patent/CN204131350U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104113173A (en) * | 2014-07-11 | 2014-10-22 | 华中科技大学 | Double-stator single-winding vernier permanent magnet motor |
| CN104795917A (en) * | 2015-03-17 | 2015-07-22 | 华中科技大学 | Multi-phase motor winding mechanism |
| CN104795917B (en) * | 2015-03-17 | 2018-01-05 | 华中科技大学 | A kind of polyphase machine winding mechanism |
| CN105006932A (en) * | 2015-08-03 | 2015-10-28 | 苏州威莫磁力传动技术有限公司 | Dual-stator rotating motor |
| CN107492998A (en) * | 2017-07-31 | 2017-12-19 | 湖北江鹏新能源汽车科技有限公司 | Double-stator Permanent Magnet Synchronous Motor |
| CN107733195A (en) * | 2017-12-01 | 2018-02-23 | 林先敏 | Cantilevered multiple stators motor |
| WO2021104123A1 (en) * | 2019-11-27 | 2021-06-03 | 南方电机科技有限公司 | Motor and device comprising said motor |
| CN113285578A (en) * | 2021-06-09 | 2021-08-20 | 东南大学 | Static seal excitation single-loop superconducting magnetic gear motor and application |
| CN114050704A (en) * | 2021-11-23 | 2022-02-15 | 西安交通大学 | Built-in permanent magnet variable voltage frequency converter based on magnetic field modulation principle and design method |
| CN114050704B (en) * | 2021-11-23 | 2022-09-27 | 西安交通大学 | Built-in permanent magnet variable voltage frequency converter based on magnetic field modulation principle and design method |
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