CN209435083U - Rotor uses the outer rotor synchronous motor of mixed rotor - Google Patents
Rotor uses the outer rotor synchronous motor of mixed rotor Download PDFInfo
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- CN209435083U CN209435083U CN201821549430.9U CN201821549430U CN209435083U CN 209435083 U CN209435083 U CN 209435083U CN 201821549430 U CN201821549430 U CN 201821549430U CN 209435083 U CN209435083 U CN 209435083U
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Abstract
Rotor uses the outer rotor synchronous motor of mixed rotor, including casing, the rotor of internal side of shell, permanent magnetism assists the stator on the inside of cage barrier rotors, shaft on the inside of stator, it is characterised in that: permanent magnetism auxiliary cage barrier rotors are placed in the outside of stator, are connected by dovetail groove with casing；Rotor, which is used, assists cage barrier rotors along the permanent magnetism that axial direction is overrided to form, and adding in non-magnetic layer bottom using width and magnetizing direction is in the incorgruous charging permanent magnet of piecemeal of sinusoidal variations and wide, the close narrow not wide short circuit cage item of shaft close to air gap；Three-phase symmetrical stator winding is embedded on stator.This kind of novel permanent magnetic auxiliary cage barrier rotors have have excellent performance, structure novel, simple process, low in cost, high mechanical strength, significant advantage reliable for operation, convenient for industrialization etc..
Description
Technical field
The utility model relates to the outer rotor synchronous motors that rotor uses mixed rotor, belong to motor field problem.
Background technique
Using the embedded rotor magneto of rare earth material by high power density and torque density, high efficiency, wider
Output-constant operation range, be applied widely in numerous areas.But rare-earth permanent magnet is expensive, resource is limited,
The lasting supply of rare earth permanent-magnetic material is also an outstanding problem.Academia and industry lack rare earth to use, without rare earth permanent magnet
Great interest is shown with by the inexpensive magneto of representative of ferrite.The few rare earth of research and development/without rare earth permanent magnet electricity
Machine has important theory significance and application value.
Synchronous magnetic resistance motor obtains fast development after nineteen nineties, and by salient pole than big, speed regulation property
Energy is excellent, high-efficient, can not use or be used only the advantages such as a small amount of low cost permanent magnets, shows huge application prospect, quilt
It is considered few rare earth of a kind of great industrial potential/without rare-earth electric motor.However (rotor does not have any encourage to pure synchronous magnetic resistance motor
Magnetic), in order to obtain biggish electromagnetic torque, needs stator side to provide biggish exciting current, lead to the efficiency and power of motor
Factor is lower.To solve this problem, researcher proposes a kind of permanent magnetism auxiliary reluctance synchronous machine, i.e., is embedded in permanent magnet
Rotor magnetic hinders to provide permanent magnet flux, improves the power factor and torque density of motor.In addition, the introduction of permanent magnet helps to turn
Sub- connecting bridge saturation, and then improve saliency (difference of d-axis inductance and axis inductor numerical value).To obtain biggish convex grey subset,
The rotor of permanent magnetism auxiliary reluctance-synchronous machine is typically designed to multilayer magnetic barrier structure.But there are still torque densities for this motor
With the deficiencies of power factor is relatively low, magnetic field saturation is serious, d-q axle inductance degree of coupling is high in high-power situation, its work is limited
The popularization of industryization application.It improves therefore, it is necessary to be optimized to the rotor of this kind of motor and then promotes answering for the type motor
With with popularization.
Utility model content
Purpose of utility model: the utility model provides the outer rotor synchronous motor that rotor uses mixed rotor, and purpose exists
In proposing manufacture a kind of not only easy to process, but also rotor with salient pole rate can be increased, to improve motor torque density and excellent steady
The novel permanent magnetic of state and dynamic property assists reluctance motor structure.
Technical solution: the utility model uses following technical scheme:
Mixed rotor outer rotor synchronous motor, including casing, the rotor of internal side of shell, permanent magnetism assist on the inside of cage barrier rotors
Stator, the shaft on the inside of stator, it is characterised in that: permanent magnetism auxiliary cage barrier rotors are placed in the outside of stator, pass through dovetail groove and machine
Shell phase connects；Rotor uses and assists cage barrier rotors along the permanent magnetism that axial direction is overrided to form, and addition uses width in non-magnetic layer bottom
The incorgruous charging permanent magnet of piecemeal and wide close to air gap, the close narrow not wide short circuit cage of shaft with magnetizing direction in sinusoidal variations
Item；Three-phase symmetrical stator winding is embedded on stator.
The permanent magnetism auxiliary cage barrier rotors share NrA salient pole, each salient pole are by being laminated with silicon steel material along axial direction
Made of lamination constitute, rotor is connected by dovetail groove with casing.
The lamination is equipped with magnetic layer, and there are non-magnetic layers between adjacent two magnetic layer, and according to magnetic field modulation
The influence of ability selects the width ratio between suitable magnetic layer and non-magnetic layer, passes through the connected shape of dowel between magnetic layer
At an entirety.
The non-magnetic layer of the permanent magnetism auxiliary reluctance rotor uses U-shaped.
The two sides of the non-magnetic layer of each U-shaped embed the short circuit cage item of different spans.
The short circuit cage item use it is wide close to air gap, close to the narrow not wide structure of shaft, be placed on tangential trapezoidal non-
In magnetic layer, it is concentric to form multiple groups with the symmetrical two conductors connection of permanent magnetism assisting cage barrier rotor axis for the end of short circuit cage item
Loop checking installation.
According to embedding, the piecemeal for being in sinusoidal variations using width and magnetizing direction is incorgruous to be filled for the non-magnetic layer bottom of each U-shaped
Magnetic permanent magnet.
The beneficial effects of the utility model are:
The rotor of this kind of motor axial lamination magnetic hinder structure on the basis of, at non-magnetic layer add auxiliary permanent magnet and
Short circuit cage item can effectively reduce Gas-gap Magnetic Field Resonance Wave and loss while further increasing motor torque density, improve motor
Stable state and dynamic operation performance；Permanent magnetism auxiliary cage barrier rotors silicon steel sheet is laminated along axial direction, it is possible to reduce the whirlpool in rotor core
Stream loss, improves electric efficiency；It is different in the piecemeal of sinusoidal variations using the added width in the non-magnetic layer bottom of U-shaped and magnetizing direction
To the permanent magnet for arrangement of magnetizing, it can not only make the permanent magnetic field at air gap more concentrate, keep motor gas-gap magnetic flux close
Degree distribution more levels off to Sine distribution, and harmonic content is few, and flux density distribution is more uniform, can also further enhance rotor
Saliency, and then promote electromagnetic torque fan-out capability and permanent magnet utilization rate；And the offset of magnetic field of permanent magnet can increase
The verticality in the d-q axis magnetic field of rotor-side reduces magnetic field locally full degree；Short circuit cage item is added in the non-magnetic layer two of U-shaped
Side not only more specification magnetic flux path, enhancing rotor saliency can improve magnetic resistance of motor torque, and then further
Motor torque density is improved, and the dynamic response capability of motor can be improved；It does not need to use other using outer-rotor structure
Fixed measure, under consistent external physical data, external rotor structure motor can obtain bigger than internal rotor construction motor
Torque, be suitable for low speed high torque operation and mechanical device be directly connected to, transmission efficiency is high.This kind of novel permanent magnetic assisting cage
Barrier rotor have have excellent performance, structure novel, simple process, low in cost, high mechanical strength, it is reliable for operation, convenient for industrialization
Etc. significant advantage.
Detailed description of the invention
It is described in detail the utility model with reference to the accompanying drawings and detailed description.
Fig. 1 is the rotor structure schematic diagram of the utility model motor；
Fig. 2 is the stator structure schematic diagram of the utility model motor；
Fig. 3 is the auxiliary permanent magnet schematic diagram of the utility model motor；
Fig. 4 is the short circuit cage bar schematic diagram of the utility model motor；
Fig. 5 is the whole signal example of the short circuit cage item of the utility model motor.
In figure: 1. casings, 2. permanent magnetism assist cage barrier rotors, 3. stators, 4. shafts, 5. stator winding, 6. permanent magnets, 7.
Short circuit cage item, 8. magnetic layers, 9. non-magnetic layers, 10. dovetail grooves, 11. dowels.
Specific embodiment: the utility model is specifically described with reference to the accompanying drawing:
The permanent magnetism of mixed rotor outer rotor synchronous motor, including casing 1,1 inside of casing assists cage barrier rotors 2, and permanent magnetism is auxiliary
Help the stator 3 of 2 inside of cage barrier rotors, the shaft 4 of 3 inside of stator, it is characterised in that: permanent magnetism auxiliary cage barrier rotors 2 are placed in stator 3
Outside, the setting of casing 1 assists cage barrier rotors 2 to pass through dovetail groove and 1 phase of casing in permanent magnetism auxiliary cage barrier rotors 2 outside, permanent magnetism
Even；Permanent magnetism auxiliary cage barrier rotors 2 hinder formula reluctance rotor using the magnetic being overrided to form along axial direction, and permanent magnetism assisting cage hinders on rotor pack
Equipped with magnetic layer 8, magnetic layer 8 uses trapezium structure, and there are non-magnetic layer 9, the permanent magnetism auxiliary between two neighboring magnetic layer 8
The non-magnetic layer 9 of reluctance rotor uses U-shape, and is in using width and magnetizing direction in the addition of the U-shaped bottom of non-magnetic layer
The incorgruous charging permanent magnet 6 of the piecemeal of sinusoidal variations, the non-magnetic layer 9 in two sides embed short circuit cage item 7；Three-phase is embedded on stator 3
Symmetrical stator winding 5.
Permanent magnetism auxiliary cage barrier rotors 2 using silicon steel material along axial direction laminate and made of lamination, and be placed in it is fixed
3 outside of son selects the width ratio between suitable magnetic layer 8 and non-magnetic layer 9 according to the influence to magnetic field modulation ability, leads
It is connected between magnetosphere by dowel 11 and forms an entirety.
The two sides of each non-magnetic layer 9 of U-shaped embed the short circuit cage item 7 of different spans.
The short circuit cage item 7 uses not wide structure, the i.e. narrow not wide structure close to wide, the close shaft of air gap,
It is placed in the trapezoidal non-magnetic layer of rotor axis two sides, is exactly that short circuit cage item 7 on every layer is not wide, the end of short circuit cage item 7
Portion forms multiple groups annular concentric circuit with the monosymmetric conductor connection of permanent magnetism auxiliary 2 axis of cage barrier rotors.Such as Figure 4 and 5 institute
Show, for example, after connecting between the upper end of the short circuit cage item 7 in same non-magnetic layer and also being connected between lower end, shape
Circuit is circularized, is concentric loop checking installation between the loop checking installation on inside and outside adjacent non-magnetic layer.
Fig. 1 is that the permanent magnetism assisting cage of the utility model motor hinders rotor structure schematic diagram, and permanent magnetism assists cage barrier rotors 2
In 3 outside of stator, it is connected by dovetail groove 10 with casing 1.The lamination of the rotor 2 in axial direction laminated by silicon steel sheet and
At can reduce the eddy-current loss in rotor 2 in this way, improve the efficiency of motor.
As seen from Figure 1, rotor 2 is changed on the basis of magnetic hinders rotor.In figure by taking 6 pole motors as an example, magnetic
Barrier rotor is equipped with 6 salient poles in total, is provided with multiple dovetail grooves on salient pole surface, more conductors are embedded in each dovetail groove and are formed
Short circuit cage item 7, the dovetail groove opened up can make to form several magnetic layers 8 on rotor 2, and the dovetail groove opened up can be such that permanent magnetism assists
Several magnetic layers 8 are formed in cage barrier rotors 2, since the width of magnetic layer 8 influences less, in order to just rotor coupling ability
Width with processing, each magnetic layer 8 can be equal, and the width ratio between each magnetic layer 8 and non-magnetic layer 9 can phase
Deng magnetic layer 5 in homogeneous thickness will be evenly spaced on non-magnetic layer 6 on 6 rotor with salient pole at this time.It is each to make
The magnetic layer 8 being spaced apart connects into an entirety, is connected between each magnetic layer 8 by the equal dowel 11 of width, connection
Muscle 11 should ensure that enough mechanical strengths.Using magnetic barrier rotor with salient pole middle line as symmetry axis, in axial direction hinder in permanent magnetism assisting cage
It is trapezoidal every magnetosphere that multiple groups are opened up on rotor 2, will combine to form multiple groups U-shaped with the dovetail groove for embedding short circuit cage item 7 respectively every magnetosphere
Non-magnetic layer 9, to also form multiple groups U-shaped magnetic layer 8.
Fig. 2 is the stator structure schematic diagram of the utility model motor, and stator 3 is placed in 2 inside of rotor, is connected with shaft 4.
3 outer surface of stator is uniformly slotted, and three-phase symmetrical stator winding 5 is embedded in slot, embeds multi-layer winding in each slot, every layer of winding it
Between mutually insulated.Stator winding 5 is all made of short distance Distributed Winding, to improve motor powered gesture and magnetomotive waveform, reduces
Harmonic content reduces the aberration rate of output voltage and electric current.
Fig. 3 is the auxiliary permanent magnet schematic diagram of the utility model motor, is embedded at the non-magnetic layer bottom of same rotor with salient pole U-shaped
For the permanent magnet 6 in portion due to the limitation of non-magnetic thickness degree, thickness is determining but can be with width etc., and is pair with rotor with salient pole middle line
Claim axis.Permanent magnet 6 should be interference fitted with non-magnetic layer 9, to prevent from throwing away permanent magnet in motor rotary course.By permanent magnet 6
Embed torque expression formula such as formula (1) institute of the permanent magnetism auxiliary reluctance motor formed after embedding in non-magnetic 9 bottom of layer of each U-shaped
Show, by formula it is found that the auxiliary permanent magnet 6 of addition will increase the permanent-magnet torque of motor, to improve the torque density of motor.
Permanent magnet in the arrangement mode of sinusoidal variations, i.e., is divided into width not equal permanent magnet using width and magnetizing direction by permanent magnet 6
Block, each piece of permanent magnet magnetizing direction magnetize according to the direction that produced sinusoidal magnetic field needs, and the purpose is to make at air gap
Permanent magnetic field more concentrate, improve the convex grey subset of motor, and then promote electromagnetic torque fan-out capability and permanent magnetism utilization rate；Together
When, different magnetizing directions, different in width permanent magnet motor gas-gap magnetic flux distribution can be made to be more nearly sine, in addition,
The offset of magnetic field of permanent magnet can also increase the verticality in the d-q axis magnetic field of rotor-side, reduce magnetic field locally full degree, and lean on
The permanent magnet 6 at nearly non-magnetic layer edge has stronger anti-degaussing ability.
In formula, p is motor number of pole-pairs, ψfFor the magnetic linkage that permanent magnet generates, LdWith LqRespectively stator is straight, axis inductor, α
For current phasor isWith d axle clamp angle.
Fig. 4 is the short circuit cage scheme of installation of the utility model motor, is embedded in the short of non-magnetic 9 two sides of layer of each U-shaped
Road cage item 7 connects into loop checking installation by end, and loop checking installation group number should be less than or be equal to the non-magnetic number of plies, i.e., non-magnetic layer 9
In can partly or entirely embed short circuit cage item 7.The short circuit cage item 7 embedded can increase the quadrature-axis reluctance of rotor, reduce rotor
Direct axis reluctance improve rotor convex grey subset, promote the magnetic resistance of motor thus the magnetic flux path more in specification rotor
Torque.Meanwhile added short circuit cage item 7 is similar to the damping cage of magneto, after cage item is added, motor load capacity is mentioned
Height, output torque increase, torque pulsation reduction, dynamic characteristic are improved, and the runnability of motor is significantly improved.It is non-to lead
It is more than or equal to the non-magnetic slice width degree close to shaft close to the non-magnetic slice width degree of air gap in magnetosphere 9, even if axis two sides
Non-magnetic layer form trapezoidal groove profile, it is electric its purpose is to make in short circuit cage item 7 caused by faradic kelvin effect
The non-uniform influence of flow distribution reduces；The cage number of plies in non-magnetic layer 9 can be single layer or multilayer, between each layer, cage item
It mutually insulate between rotor, cage item is joined together to form circuit by end, and the purpose is to reduce induced electricity in cage item
The influence of the kelvin effect of stream reduces the loss of motor, improves efficiency, while can improve the distribution of motor gas-gap flux density, makes gas
Gap more levels off to sine, further increases the coupling ability of permanent magnetism assisting cage barrier rotor.
In conclusion the external rotor permanent magnet assisting cage barrier structure that utility model proposes can significantly increase the coupling energy of rotor
The torque density of motor not only can be improved in power, enhances the stable state and dynamic characteristic of motor, and have structure novel, cost
It is cheap, be convenient for industrialization the advantages that.
Claims (5)
1. rotor uses the outer rotor synchronous motor of mixed rotor, including casing (1), the permanent magnetism assisting cage barrier on the inside of casing (1)
Rotor (2), permanent magnetism assist the stator (3) on the inside of cage barrier rotors (2), the shaft (4) on the inside of stator (3), it is characterised in that: permanent magnetism
Auxiliary cage barrier rotors (2) is placed in the outside of stator (3), and on the outside of permanent magnetism auxiliary cage barrier rotors (2), permanent magnetism is auxiliary for casing (1) setting
Cage barrier rotors (2) are helped to be connected by dovetail groove with casing (1)；Permanent magnetism auxiliary cage barrier rotors (2) use is overrided to form along axial direction
Magnetic hinders formula reluctance rotor, and permanent magnetism assisting cage hinders rotor pack and is equipped with magnetic layer (8), and magnetic layer (8) uses trapezium structure, adjacent
There are non-magnetic layer (9) between two magnetic layers (8), the non-magnetic layer (9) of the permanent magnetism auxiliary reluctance rotor uses U-shaped shape
Shape, and the incorgruous charging permanent magnet of piecemeal (6) are added in the U-shaped bottom of non-magnetic layer, the non-magnetic layer (9) in two sides embeds short circuit
Cage item (7)；Three-phase symmetrical stator winding (5) are embedded on stator (3).
2. the outer rotor synchronous motor that rotor according to claim 1 uses mixed rotor, it is characterised in that: piecemeal is incorgruous
Charging permanent magnet (6) uses width and magnetizing direction is in the incorgruous charging permanent magnet of piecemeal (6) of sinusoidal variations.
3. the outer rotor synchronous motor that rotor according to claim 1 uses mixed rotor, it is characterised in that: the permanent magnetism
Auxiliary cage barrier rotors (2) using silicon steel material along axial direction laminate and made of lamination, and be placed on the outside of stator (3), according to
Influence to magnetic field modulation ability selects the width ratio between suitable magnetic layer (8) and non-magnetic layer (9), leads between magnetic layer
Dowel (11) are crossed to be connected and form an entirety.
4. the outer rotor synchronous motor that rotor according to claim 1 uses mixed rotor, it is characterised in that: each U-shaped is non-
The two sides of magnetic layer (9) embed the short circuit cage item (7) of different spans.
5. the outer rotor synchronous motor that rotor according to claim 1 uses mixed rotor, it is characterised in that: the short circuit
Cage item (7) uses not wide structure to be placed on rotor axis that is, close to the narrow not wide structure wide, close to shaft of air gap
In the trapezoidal non-magnetic layer of two sides, the end of short circuit cage item (7) assists the monosymmetric conductor of cage barrier rotors (2) axis with permanent magnetism
Connection forms multiple groups annular concentric circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821549430.9U CN209435083U (en) | 2018-09-21 | 2018-09-21 | Rotor uses the outer rotor synchronous motor of mixed rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821549430.9U CN209435083U (en) | 2018-09-21 | 2018-09-21 | Rotor uses the outer rotor synchronous motor of mixed rotor |
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| Publication Number | Publication Date |
|---|---|
| CN209435083U true CN209435083U (en) | 2019-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821549430.9U Active CN209435083U (en) | 2018-09-21 | 2018-09-21 | Rotor uses the outer rotor synchronous motor of mixed rotor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109167501A (en) * | 2018-09-21 | 2019-01-08 | 沈阳工业大学 | A kind of mixed rotor outer rotor synchronous motor |
| CN111446830A (en) * | 2020-04-30 | 2020-07-24 | 华中科技大学 | Double-stator tangential excitation magnetic field modulation motor |
| CN112510951A (en) * | 2020-11-18 | 2021-03-16 | 苏州英磁新能源科技有限公司 | Rotor structure and disk motor that sectional type magnet steel was arranged |
-
2018
- 2018-09-21 CN CN201821549430.9U patent/CN209435083U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109167501A (en) * | 2018-09-21 | 2019-01-08 | 沈阳工业大学 | A kind of mixed rotor outer rotor synchronous motor |
| CN109167501B (en) * | 2018-09-21 | 2023-10-31 | 沈阳工业大学 | Mixed rotor outer rotor synchronous motor |
| CN111446830A (en) * | 2020-04-30 | 2020-07-24 | 华中科技大学 | Double-stator tangential excitation magnetic field modulation motor |
| CN111446830B (en) * | 2020-04-30 | 2021-07-02 | 华中科技大学 | Double-stator tangential excitation magnetic field modulation motor |
| CN112510951A (en) * | 2020-11-18 | 2021-03-16 | 苏州英磁新能源科技有限公司 | Rotor structure and disk motor that sectional type magnet steel was arranged |
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