CN205792178U - A kind of magnetic controllable permanent magnetic arrangements for speed regulation - Google Patents
A kind of magnetic controllable permanent magnetic arrangements for speed regulation Download PDFInfo
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- CN205792178U CN205792178U CN201620532121.5U CN201620532121U CN205792178U CN 205792178 U CN205792178 U CN 205792178U CN 201620532121 U CN201620532121 U CN 201620532121U CN 205792178 U CN205792178 U CN 205792178U
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- magnetic
- rotor
- stator winding
- speed regulation
- arrangements
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Abstract
The utility model discloses a kind of magnetic controllable permanent magnetic arrangements for speed regulation, be made up of field frame assembly, the first rotor, the second rotor, controller etc., field frame assembly, the first rotor and the second rotor coaxial are arranged, adjacent there is air gap between the two.Being provided with permanent magnet in described the first rotor, number of pole-pairs is N1, and N1 is to pole field in generation, and described stator winding number of pole-pairs is M, and M is to pole field in generation, and described second rotor adjustable magnetic ring periodicity is N2, and three meets the relation of magnetic resonance.Described stator winding is connected with controller, can control electric current and the magnetic field of generation in winding.Control that winding is non-carbonate and slip ring, reliability is high, energy can draw equipment and can feedback grid, device efficiency is high, cooling is simple, control capability is little, have soft start function, is applicable to high-power and super high power speed governing and applies.
Description
Technical field
This utility model belongs to stepless variable transmission technique field, is specifically related to a kind of electromagnetic coupled arrangements for speed regulation.
Background technology
In commercial production or daily life, substantial amounts of dynamic power machine it is frequently necessary to carry out rotational speed regulation, to reach the mesh of energy-saving and emission-reduction
, the application such as such as centrifugal blower, pump class, wind-powered electricity generation, Ship Propeling, owing to technology requires more and more higher, step speed regulation fills
Put and the most seldom apply in this technical field, and progressively replaced by stepless speed regulation.Existing main stepless speed regulation technology means mainly have
Two big classes a: class is that motor is joined directly together with load, use converter change grid side electrical quantity, i.e. input end of motor voltage with
Frequency, regulates rotating speed；Another kind of is to be connected with both with using coupling machinery between motor in load, such as fluid coupling and forever
Magnetic coupler, by regulation degree of coupling (or regulation liquid measure, or regulation size of gaps) change output torque characteristics, by turn
Square characteristic regulates rotating speed with the change of the operating point of load characteristic.For the former (converter), there is efficiency height, energy-saving effect
Wait well technological merit, but have that floor space is big, grid side high frequency pollutes, environmental suitability is poor, poor anti jamming capability, daily
Technical disadvantages such as maintenance workload is big, service life is shorter and increase with capacity that to make control difficulty increase very fast, are unsuitable for big
Power and super high power speed governing field.And for the latter (bonder), compared to converter, there is reliability height, floor space
The technological merits such as little, environmental suitability is strong, but have that efficiency is low, caloric value big, cooling is complicated (particularly with powerful device)
Etc. shortcoming.
Specifically, existing bonder uses fluid coupling or employing permanent magnetic coupling to be all two-spool structural shapes,
There is coupling moment between two rotors, and rotate around same axis.The bonder of this structure, though consider do not have other because of
In the case of element impact, according to Newton's third law, two coupling torques should meet equal in magnitude, universal law in opposite direction, by
In at work, the input rotor speed of bonder is constant, and the rotating speed of outfan carries out gearshift adjustment.Can arrange and write its characteristic
Formula is as follows:
Ti=To (1)
Pi=Ti×ni (2)
Po=To×no (3)
For centrifugal load of the pumps
To=k × no 2 (4)
Then it is lost
K in formula, is definite value with n1, and note peak power is
Pmax=k × n1 3 (6)
As no/n1=2/3, there is theoretical maximum in loss Δ P, is 14.8% × Pmax。
Visible by above analysis, the structure of existing bonder, for load of the pumps, all reflect that efficiency is low, caloric value is bigger
Etc. shortcoming.Its maximum caloric value is about the 15% of nominal load power.Further, we it is seen that, this technological deficiency is
Principle defect, it is difficult to designed by local optimum and improved.Along with the lifting of coupled power, this caloric value is increasingly difficult to
Remove.Therefore, it is necessary to propose a kind of brand-new structural shape, to solve the problems referred to above.
This utility model, for above-mentioned major defect, proposes a kind of novel magnetic controllable permanent magnetic arrangements for speed regulation, have efficiency high,
The technological merits such as cooling is simple, good energy-conserving effect, are particularly suitable for application to high-power and super high power speed control device.
Utility model content
The utility model proposes a kind of novel magnetic controllable permanent magnetic arrangements for speed regulation, it is intended that overcome prior art caloric value big,
Inefficient technological deficiency, it is provided that one have energy-efficient, cool down simple Variable Speed Technology scheme, can be applicable to big merit
Rate and the technical scheme of super high power stepless speed regulation.
The technical solution of the utility model is: a kind of magnetic controllable permanent magnetic arrangements for speed regulation, including field frame assembly, the first rotor, second
Rotor, controller, described field frame assembly, the first rotor and the second rotor coaxial arrange, adjacent there is air gap between the two；
Described field frame assembly, is made up of with stator winding stator core；Described stator core is processed by soft magnetic materials, uses
In conduct magnetic field, described stator winding is installed on above described stator core, and described stator winding electrically connects with described controller,
By electric current and produce magnetic field；
Described the first rotor is provided with permanent magnet, produces permanent magnetic field；
The second described rotor is provided with adjustable magnetic ring, permeability magnetic material and non-permeable material periodic intervals arrange and form.
Further, described stator winding number of pole-pairs is M, and the first rotor permanent magnet pole logarithm is N1, the second rotor magnetic conduction material
Material and the periodicity of non-magnet material are N2, should meet following relation:
M+N1=N2 (7)
Or
N1-M=N2 (8)
And described stator winding number of pole-pairs M and the first rotor permanent magnet pole logarithm N1 also should meet relation:
M/N1〈1/5； (9)
Described stator winding is three-phase windings.
Further, the described converter plant in controller is formed by controlled thyristor is in series with a resistor, by regulating controlled crystalline substance
The dutycycle of brake tube break-make, regulates winding current.
Further, described controller converter plant is in series with resistance and inductance by three-phase bridge controlled thyristor, by adjusting
The dutycycle of joint controlled thyristor break-make, regulates winding current.
Further, described controller converter plant is by handing over orthogonal commutation inversion loop to be connected with line series, stator winding electricity
Stream feed-in electrical network.
Further, described stator winding is single-phase, two-phase or polyphase windings.
Further, described stator core is processed by stalloy.
Further, the second described rotor is arranged by permeability magnetic material and diamagnetic material periodic intervals and is formed.
Having the beneficial effect that of this utility model:
(1) compared with frequency control scheme, the control energy of the stator winding of the technical program is less, need not use and motor
The 20% of the controller that capacity is suitable, generally less than total capacity is a kind of the most high-power or the speed governing solution party of super high power
Case.
(2) compared with the bonder that two traditional rotors intercouple, controller is the side by electric current of the energy in stator winding
Formula derives speed control device itself, and this electric energy can reclaim electrical network by handing over the energy back feed device of orthogonal commutation inversion, or passes through resistance
Heating system dispels the heat.The bonder heat radiation of complexity in the limited closed space of device interior avoiding traditional two rotors to intercouple is asked
Topic.
(3) not rotating due to stator, equipment is connected with controller without carbon brush and slip ring, reduces the maintenance of equipment, and generates heat
Stator winding in the stator, the problem that the most there is not rotatory sealing during cooling, enhance equipment reliability of operation.
(4) there is the function of soft starter for motor: before the motor being connected with equipment is not actuated, i.e. the first rotor and second turn
When son does not rotates, pass to alternating current in the stator windings and produce the permanent magnet interaction in rotating excitation field, with the first rotor,
The first rotor and the second rotor startup can be driven, thus drive the rotor of outside to rotate, turn to certain when rotor rotates
After speed, restart motor, it is to avoid produce dash current when motor directly initiates, it is achieved the function of soft start.
Accompanying drawing explanation
Fig. 1 is that the structure of this utility model the first instantiation is always schemed；
Fig. 2 is the controller deflector structure figure of this utility model the first instantiation；
Fig. 3 is that this utility model the second instantiation structure is always schemed；
Fig. 4 is the first rotor structure chart of this utility model the second instantiation；
Fig. 5 is the second rotor structure figure of this utility model the second instantiation；
Fig. 6 is the exploded view of the field frame assembly of this utility model the second instantiation；
Fig. 7 is the controller deflector structure figure of this utility model the first instantiation；
In figure: 1, field frame assembly, 2, stator winding, 3, stator core, 4, support, the 5, second rotor, 6, non-magnetic
Material, 7, permeability magnetic material, 8, the first rotor, 9, permanent magnet, 10, rosette, 11, the first rotor block bearing, 12,
Second rotor supporting bearing, 13, mutual block bearing, the 14, second rotor shaft, 15, the first rotor rotating shaft, 16, connecting rod,
17, end cap, 18, controller, 19, adjustable magnetic ring；
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out clear,
It is fully described by, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.
Based on the embodiment in this utility model, the institute that those of ordinary skill in the art are obtained under not making creative work premise
There are other embodiments, broadly fall into the scope of this utility model protection.
Embodiment one:
Fig. 1 to Fig. 2 is an instantiation of the present utility model: a kind of magnetic controllable permanent magnetic arrangements for speed regulation, as it is shown in figure 1, in
Radial arrangement, forms, field frame assembly 1, first including field frame assembly 1, the first rotor the 8, second rotor 5, controller 18 etc.
Rotor 8 and the second rotor 5 are coaxially arranged, adjacent there is air gap between the two.
Described field frame assembly 1, is made up of with stator winding 2 stator core 3, and stator core 3 is by soft magnetic materials (such as stalloy)
Process, and have teeth groove, in the embedding groove being around in stator core 3 of stator winding 2, around being made as 2 to pole winding, generation 2
Magnetic field to pole.
Described the first rotor is provided with permanent magnet 9, and number of pole-pairs is equal to 16, produces 16 magnetic fields to pole；
The second described rotor is provided with adjustable magnetic ring 19, by permeability magnetic material 7 and non-permeable material 6 (or diamagnetic material) cycle
Property interval layout form, its periodicity is 18.
Described stator winding number of pole-pairs M is spaced apart with non-magnet material equal to the second rotor magnetic conduction plus permanent magnet pole logarithm N1
Periodicity N2, and M/N1=1/8.
Described stator winding is three-phase windings, and three lead-out wires are attached respectively with three terminals of rosette 10.
During work, described the first rotor rotating shaft 15 connects outside mechanical power source, drives the first rotor 8 to rotate, the first rotor
The permanent magnet 9 arranged in 8 produces periodic permeability magnetic material 7 and the non-magnet material 6 that magnetic field is arranged in the second rotor 9
Adjustable magnetic effect, form the rotating excitation field that can couple, and generation induced potential in stator winding 2 with stator winding 2.
Described controller 18, as shown in Figure 2, it is characterised in that, the converter plant terminal T1 of external controller 18, T2,
T3 is connected with three terminals of rosette.Controller 18 converter plant is by rectification module, DC support electric capacity, inversion module
Constitute friendship orthogonal commutation inversion loop, by controlling the dutycycle of power electronic devices in commutation inversion, regulate combined-voltage,
Thus regulating the electric current in stator winding 2,18 electric energy inversions of controller simultaneously enter electrical network, to avoid equipment heating, improve effect
Rate.
Embodiment two:
Fig. 3 to Fig. 7 is an instantiation of the present utility model: a kind of magnetic controllable permanent magnetic arrangements for speed regulation, as it is shown on figure 3, in
Axial type is arranged, forms including field frame assembly 1, the first rotor the 8, second rotor 5, controller 18 etc., field frame assembly 1, the
One rotor 8 and the second rotor 5 are coaxially arranged, adjacent there is axial air-gap between the two.
Described field frame assembly 1, is made up of with stator winding 2 and machine 4 etc. stator core 3, as shown in Figure 6, and stator core 3
For disc type iron core, in the embedding groove being around in stator core 3 of stator winding 2, around being made as disc type winding.
As shown in Figure 4, described the first rotor is provided with permanent magnet 9, the back-to-back mounted in pairs in disc type
As it is shown in figure 5, the second described rotor is made up of connecting rod 16, permeability magnetic material (bulk) 7 and non-permeable material dish 6.
Permeability magnetic material (bulk) 7 and non-permeable material 6 mounted in pairs all back-to-back, is connected by connecting rod 16.
Described stator winding number of pole-pairs M is spaced apart with non-magnet material equal to the second rotor magnetic conduction plus permanent magnet pole logarithm N1
Periodicity N2, and M/N1 < 1/5.
Described stator winding is three-phase windings, and three lead-out wires are attached respectively with three terminals of rosette 10.
Described controller 18, as it is shown in fig. 7, be made up of, by controlled whole controllable rectifier module, Support Capacitor, resistance etc.
Flow module regulation output voltage, thus regulation is by resistor current, and then regulation is by the electric current in stator winding 2, it is achieved magnetic
Field controls, thus regulates torque and rotating speed.
Specifically, the operation principle of the technical program is as follows:
Described the first rotor, between the second rotor and stator, there is air gap.Being provided with winding in described stator, winding alives,
Rotating excitation field can be produced. alternating current size can be changed by external controller, thus control rotating excitation field, this magnetic field and second
After the adjustable magnetic ring adjustable magnetic that rotor is arranged, the magnetic field produced with the permanent magnet of the first rotor intercouples.Use this principle, it is achieved
Intercoupling between stator, the first rotor, the second rotor three, thus avoid in the aforementioned problem being coupled heating by both.
According to magnetic modulation principle, the rotational speed of magnetic field WM of stator winding generation and stator torque TM, the first rotor rotating speed W1 and its torque
T1, the second rotor speed W2 and its torque T2, three produces coupled relation:
T2=T1+TM (12)
Formula (11) is substituted into, then by formula (9)
Above formula stator torque TMThe input torque T of the first rotor relatively1Less, in the electromagnetic equipment that design is good, torque is general
Be certain proportion relation with winding current, then in stator winding, electric current is the most relatively small, and the control power of winding is the least.Typically
Less than total capacity 20%.
Simultaneously, it is contemplated that TMLess, then
T2=T1+TM≈T1 (14)
Above formula explanation the first rotor and the second rotor torque are substantially suitable, can realize the effect of moment transmission.
One of ordinary skill in the art will appreciate that all or part of flow process realizing in above-described embodiment method, can be by meter
Calculation machine program instructs relevant hardware and completes, and described program can be stored in a computer read/write memory medium, this journey
Sequence is upon execution, it may include such as the flow process of the embodiment of above-mentioned each method.Wherein, described storage medium can be magnetic disc, CD,
Read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM)
Deng.
The above is preferred implementation of the present utility model, it is noted that come for those skilled in the art
Saying, on the premise of without departing from this utility model principle, it is also possible to make some improvements and modifications, these improvements and modifications also regard
For protection domain of the present utility model.
Claims (8)
1. magnetic controllable permanent magnetic arrangements for speed regulation, it is characterised in that: including field frame assembly, the first rotor, the second rotor, controller, described field frame assembly, the first rotor and the second rotor coaxial are arranged, adjacent there is air gap between the two；
Described field frame assembly, is made up of with stator winding stator core；Described stator core is processed by soft magnetic materials, and for conduct magnetic field, described stator winding is installed on above described stator core, and described stator winding electrically connects with described controller, by electric current and produce magnetic field；
Described the first rotor is provided with permanent magnet, produces permanent magnetic field；
The second described rotor is provided with adjustable magnetic ring, permeability magnetic material and non-permeable material periodic intervals arrange and form.
2. magnetic controllable permanent magnetic arrangements for speed regulation as claimed in claim 1 a kind of, it is characterised in that: described stator winding number of pole-pairs is M, and the first rotor permanent magnet pole logarithm is N1, the second rotor admittance material is N2 with the periodicity of non-magnet material, should meet following relation:
M+N1=N2
Or
N1-M=N2
And described stator winding number of pole-pairs M and the first rotor permanent magnet pole logarithm N1 also should meet relation:
M/N1〈1/5；
Described stator winding is three-phase windings.
3. a kind of magnetic controllable permanent magnetic arrangements for speed regulation as claimed in claim 1, it is characterised in that: the described converter plant in controller is formed by controlled thyristor is in series with a resistor, by regulating the dutycycle of controlled thyristor break-make, regulates winding current.
4. a kind of magnetic controllable permanent magnetic arrangements for speed regulation as claimed in claim 3, it is characterised in that: described controller converter plant is in series with resistance and inductance by three-phase bridge controlled thyristor, by regulating the dutycycle of controlled thyristor break-make, regulates winding current.
5. a kind of magnetic controllable permanent magnetic arrangements for speed regulation as claimed in claim 3, it is characterised in that: described controller converter plant is by handing over orthogonal commutation inversion loop to be connected with line series, stator winding current feed-in electrical network.
6. a kind of magnetic controllable permanent magnetic arrangements for speed regulation as claimed in claim 1, it is characterised in that: described stator winding is single-phase, two-phase or polyphase windings.
7. a kind of magnetic controllable permanent magnetic arrangements for speed regulation as claimed in claim 1, it is characterised in that: described stator core is processed by stalloy.
8. a kind of magnetic controllable permanent magnetic arrangements for speed regulation as claimed in claim 1, it is characterised in that: the second described rotor is arranged by permeability magnetic material and diamagnetic material periodic intervals and is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620532121.5U CN205792178U (en) | 2016-06-02 | 2016-06-02 | A kind of magnetic controllable permanent magnetic arrangements for speed regulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620532121.5U CN205792178U (en) | 2016-06-02 | 2016-06-02 | A kind of magnetic controllable permanent magnetic arrangements for speed regulation |
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| Publication Number | Publication Date |
|---|---|
| CN205792178U true CN205792178U (en) | 2016-12-07 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620532121.5U Expired - Fee Related CN205792178U (en) | 2016-06-02 | 2016-06-02 | A kind of magnetic controllable permanent magnetic arrangements for speed regulation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106059251B (en) * | 2016-06-02 | 2018-09-04 | 武汉磁创科技有限公司 | A kind of magnetic controllable permanent magnetic speed regulation device |
-
2016
- 2016-06-02 CN CN201620532121.5U patent/CN205792178U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106059251B (en) * | 2016-06-02 | 2018-09-04 | 武汉磁创科技有限公司 | A kind of magnetic controllable permanent magnetic speed regulation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20210602 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |