CN209676100U - A kind of rotor sectional type magnetic circuit complementary type permanent magnet synchronous motor - Google Patents
A kind of rotor sectional type magnetic circuit complementary type permanent magnet synchronous motor Download PDFInfo
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- CN209676100U CN209676100U CN201920600576.XU CN201920600576U CN209676100U CN 209676100 U CN209676100 U CN 209676100U CN 201920600576 U CN201920600576 U CN 201920600576U CN 209676100 U CN209676100 U CN 209676100U
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- 230000001939 inductive effect Effects 0.000 claims abstract description 9
- 230000005611 electricity Effects 0.000 claims abstract description 8
- 230000011218 segmentation Effects 0.000 claims abstract description 7
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- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The utility model discloses a kind of rotor sectional type magnetic circuit complementary type permanent magnet synchronous motors, including stator and rotor, stator and rotor are all permeability magnetic material and there is air gap therebetween, and stator is equipped with magnetic teeth, are arranged alternately in magnetic teeth and concentrate armature winding and permanent magnet.Wherein armature winding is placed in slot, and permanent magnet Surface Mount radially magnetizes in tooth tip, and two permanent magnet magnetizing direction of arbitrary neighborhood is opposite；The number of stator magnetic teeth is Ns=4*m*k*n；Magnetic teeth, which is equipped with, concentrates armature winding identical with the number of permanent magnet, is 2*m*k*n, and the number that the rotor is equipped with segmentation magnetic inductive block is Nr=(2*m*k ± 1) n, wherein m is the number of phases of motor, and n and k are positive integer, and n is electric motor units number.The utility model motor has the characteristics that brushless, rotor structure is simple, every phase back-emf is symmetrical and near sinusoidal, torque pulsation is small, permanent magnet dosage is few, power density is high.The utility model can be used for the high power requirements occasion such as electric car；It is also applied for the occasions such as wind-power electricity generation, seawave power generation.
Description
Technical field
The utility model relates to a kind of permanent magnet synchronous motors, and in particular to be that a kind of rotor sectional type magnetic circuit is complementary
Type permanent magnet synchronous motor, belongs to technical field of motor manufacture.
Background technique
With the development of new energy technology, core of the motor as fields such as wind-power electricity generation, rail traffic, new-energy automobiles
Component is widely studied and applied.Direct current generator is since armature supply and exciting current can be separately adjustable, nothing
Governor control characteristics when by for motor, or as generator operation when output voltage stability be all in numerous motors most
Preferably.However, having maintenance inconvenient, poor reliability etc. lacks due to there is mechanical brush and commutator on DC motor structure
Point, to limit its use scope.AC induction motor structure is simple, is not necessarily to brush, easy to maintain, high reliablity, general
Logical transmission field is widely applied, but the speed adjusting performance of the motor is bad, power factor and efficiency are lower.It is traditional forever
For magnetic brushless AC motor since power density is big, the advantages such as power factor height have obtained faster development in recent years.But turn
Installation permanent magnet is needed to carry out excitation on son, permanent magnet is placed in motor high speed rotor, not only increases the cost of motor, Er Qiecun
By the factors bring such as high temperature, vibration demagnetization risk.
In recent years, a kind of doubly-salient brushless DC generator has obtained the extensive concern of related scholar, the rotor knot of the motor
Structure is simple, is only made of permeability magnetic material, high reliablity, and permanent magnet and armature winding are placed in stator, affected by vibration small.So
And research shows that the machine winding magnetic linkage is unipolarity, and there are shortcomings, as back-emf is asymmetric and harmonic content
Greatly, output torque pulsation is big, and power density is low etc., greatly limits its engineering practicability.
Summary of the invention
In view of the shortcomings of the prior art, the utility model aim is to provide, a kind of rotor structure is simple, cost
It is low, back-emf near sinusoidal, brushless, reliable for operation, armature winding and permanent magnet is placed in stator and permanent magnet dosage is less,
Power density and high-efficient, the low rotor sectional type magnetic circuit complementary type permanent magnet synchronous motor of torque pulsation.
To achieve the goals above, the utility model is achieved through the following technical solutions:
A kind of rotor sectional type magnetic circuit complementary type permanent magnet synchronous motor of the utility model, including stator and rotor, stator
All it is permeability magnetic material with rotor and there is air gap therebetween, stator is equipped with magnetic teeth, and concentration electricity is arranged alternately in magnetic teeth
Pivot winding and permanent magnet；The number of stator magnetic teeth is Ns=4*m*k*n；Magnetic teeth, which is equipped with, concentrates armature winding and permanent magnet
Number is identical, is 2*m*k*n, the number that rotor is equipped with segmentation magnetic inductive block is Nr=(2*m*k ± 1) n；
Permanent magnet and concentration armature winding are disposed alternately in stator magnetic teeth, and armature winding is wrapped in a stator magnetic conduction
On tooth tooth, permanent magnet Surface Mount radially magnetizes in tooth tip, and two permanent magnet magnetizing direction of arbitrary neighborhood is opposite, wherein m is motor
The number of phases, n and k are positive integer, and n is electric motor units number, and k is the concatenated concentration armature of a phase armature winding in each electric motor units
Winding logarithm.
Any one phase armature winding is composed in series concentration armature winding by k in above-mentioned each electric motor units, wherein arbitrarily
A pair concentrates two concentration armature winding in armature winding to differ half of rotor polar distance with the relative position of rotor, corresponds to 180
Electric angle is spent, the two has complementary characteristic.
A kind of above-mentioned rotor sectional type magnetic circuit complementary type permanent magnet synchronous motor is internal rotor or outer-rotor structure.Turn as outer
When minor structure, the rotor that is made of magnetic inductive block is arranged in stator exterior, when as inner rotor core, the rotor that is made of magnetic inductive block
It is arranged in stator interior.
A kind of above-mentioned rotor sectional type magnetic circuit complementary type permanent magnet synchronous motor is motor or generator.
The utility model as driving motor in use, the output power density and carrying load ability of system can be improved,
Therefore it is particularly suitable for the fields such as high-power driving occasion, such as urban track traffic driving motor, driving motor for electric automobile；This
Utility model also is suitable as generator use, and for fields such as wind-power electricity generation, seawave power generations, the electric machine structure is simple, no electricity
Brush, rotor are only made of magnetic inductive block, and structure is simple, easy to maintain.
Detailed description of the invention
It is described in detail the utility model with reference to the accompanying drawings and detailed description；
A kind of 1 electric machine structure schematic diagram of rotor sectional type magnetic circuit complementary type magneto embodiment of Fig. 1 the utility model；
A kind of rotor sectional type magnetic circuit complementary type permanent magnet of permanent magnet motor magnetizing direction schematic diagram of Fig. 2 the utility model；
A kind of 2 electric machine structure schematic diagram of rotor sectional type magnetic circuit complementary type magneto embodiment of Fig. 3 the utility model；
A kind of 3 electric machine structure schematic diagram of rotor sectional type magnetic circuit complementary type magneto embodiment of Fig. 4 the utility model；
A kind of 4 electric machine structure schematic diagram of rotor sectional type magnetic circuit complementary type magneto embodiment of Fig. 5 the utility model；
A kind of 5 electric machine structure schematic diagram of rotor sectional type magnetic circuit complementary type magneto embodiment of Fig. 6 the utility model；
Wherein, 10- rotor, 11- stator, 110- magnetic teeth, 111- armature winding, 112- permanent magnet.
Specific embodiment
A kind of rotor sectional type magnetic circuit complementary type magneto provided by the utility model, to make the purpose of this utility model
It is more readily apparent from technological means, creation characteristic and effect, develops simultaneously specific example to originally practical new below with reference to referring to attached drawing
Type is further described.It is to be appreciated that specific embodiment described herein is not used to only to explain the utility model
Limit the utility model.
Embodiment 1
Referring to Fig. 1, a kind of rotor sectional type magnetic circuit complementary type permanent magnet synchronous motor of the utility model includes 11 He of stator
All there is for permeability magnetic material and therebetween air gap in rotor 10, stator 11 and rotor 10, stator 11 is equipped with magnetic teeth 110, lead
It is arranged alternately on magnetic tooth 110 and concentrates armature winding 111 and permanent magnet 112.In the present embodiment motor, m=3, k=1, n=1,
In, m is the number of phases of motor, and n and k are positive integer, and n is electric motor units number, and k is phase armature winding series connection in each electric motor units
Concentration armature winding logarithm.That is, the motor is three-phase motor, there is A, B, C three-phase, include 1 electric motor units, Mei Ge electricity
There is k=1 to concentration armature winding in machine unit.So the number of 11 magnetic teeth 110 of stator is Ns=4*m*k*n=12, magnetic conduction
Tooth 110, which is equipped with, concentrates armature winding 111 identical with the number of permanent magnet 112, is 2*m*k*n=6；Rotor 10 is equipped with segmentation and leads
The number of magnetic patch is Nr=(2*m*k ± 1) n, works as k=1, and when m=3, n=1, Nr can be 5,7, and the present embodiment takes Nr=7.Permanent magnetism
Body 112 and concentration armature winding 111 are disposed alternately in stator magnetic teeth 110, and armature winding is wrapped in a stator magnetic teeth
On 110,112 Surface Mount of permanent magnet radially magnetizes in tooth tip, and arbitrary neighborhood two permanent magnets, 112 magnetizing directions are opposite.
In each electric motor units of the utility model motor, armature winding 111 and permanent magnet 112 is concentrated to be disposed alternately at fixed
In sub- magnetic teeth 110, the two number is all 2*m*k, any one phase armature winding it is concatenated concentrate armature winding 111 logarithm
For k, setting concentrates the magnetic teeth 110 of armature winding 111 to be known as armature winding magnetic teeth, the magnetic teeth 110 of permanent magnet 112 is arranged
Referred to as permanent magnet magnetic teeth；The arrangement mode of m phase armature winding spatially has following features, belongs to k concentration of same phase
Armature winding is placed in two adjacent armature winding magnetic teeths, is belonged to out of phase concentration armature winding 111 and is successively alternately placed in
In armature winding magnetic teeth；According to above-mentioned arrangement mode, 2*k concentration armature winding 111 for belonging to same phase forms k to complementary sets
Middle armature winding, wherein concentrating two in the armature winding relative position phases for concentrating armature winding 111 and rotor for any pair
Poor half of rotor polar distance, corresponding electromagnetic property spatially differ 180 degree electric angle, form complementary structure, one phase of composition around
When group, the back-emf harmonic wave in complementary concentration armature winding is cancelled out each other, and phase potential is more sinusoidal.The phase of n electric motor units
The connection type of armature winding is identical.
By k=1 in this present embodiment, therefore it is disposed alternately at permanent magnet 112 the concentration armature in stator magnetic teeth 110
The number of winding 111 is 6, wherein belonging to out of phase armature winding A, B, C are successively alternately placed in armature winding magnetic teeth 110
On, 2 concentration armature winding 111 for belonging to same phase form armature winding in 1 pair of complementary sets, two concentrations armature winding 111 and
The relative position of rotor 10 differs half of rotor polar distance, and corresponding electromagnetic property spatially differs 180 degree electric angle.Such as Fig. 1
Middle A phase two concentrates armature winding A1 and A2.At this point, the stator tooth center line where concentrating armature winding A1 faces 10 mould of rotor
Block center line, and the stator tooth center line where concentrating armature winding A2 faces the center line between two rotors, 10 module, two
Person differs half of rotor polar distance with the relative position of rotor 10, and the two spatially differs 180 degree electric angle.Pass through change
A1, A2 direction of winding are overlapped mutually the two back-emf.Therefore, after permanent magnet 112 is passed through direct current, armature winding A1 is concentrated
It is about each 2 times for concentrating back-emf fundamental wave value in armature winding with the A2 back-emf fundamental wave value for being composed in series A phase winding.But
It is that during rotor 10 rotates 360 ° of an electrical cycle (that is, one rotor polar distance of rotation), A phase concentrates armature winding A1
There are the differences on magnetic circuit with 10 relative position of rotor with A2.When position as shown in Figure 1, such as assume to concentrate armature winding A1 at this time
In magnetic linkage be approximately zero, referred to as the first equilbrium position, at this time concentrate armature winding A2 in magnetic linkage be also approximately at zero, due to collection
Middle armature winding A2 is different from the position of A1 relative rotor, differs half of rotor polar distance, therefore the position is known as the second balance position
It sets.During one electrical cycle of rotation counterclockwise of rotor 10, A phase concentrates magnetic linkage amplitude change procedure in armature winding A1
Are as follows: the first equilbrium position --- positive maximum amplitude --- the second equilbrium position --- negative maximum amplitude --- first equilbrium position；
And A phase concentrates magnetic linkage amplitude change procedure in armature winding A2 are as follows: the second equilbrium position --- positive maximum amplitude --- first is flat
Weighing apparatus position --- negative maximum amplitude --- second equilbrium position.Therefore, the magnetic linkage variation tendency in two parts armature winding is symmetrical
It is complementary.It is all bipolarity magnetic linkage (that is, have just have negative) that A phase, which concentrates the magnetic linkage generated in armature winding A1 and A2, this feature and is passed
The double salient-pole electric machine of system is different.A phase concentrates the counter potential waveform generated in armature winding A1 and A2 also to have symmetry, series connection group
After A phase winding, harmonic component is cancelled out each other, and obtained opposite potential has preferable sinuso sine protractor, is turned to reduce
Square fluctuation is highly suitable for brushless ac (BLAC) control.
B, C two-phase equally have the characteristics that A phase, 120 ° of electrical angles of phase mutual deviation between three-phase.
Fig. 2 is a kind of rotor sectional type magnetic circuit complementary type permanent magnet of permanent magnet motor magnetizing direction of the utility model embodiment 1
Schematic diagram.Embodiments described below permanent magnet magnetizing direction is similar with the present embodiment, repeats no more.
Embodiment 2
Fig. 3 is also a three-phase rotor sectional type magnetic circuit complementary type permanent magnet synchronous motor.The present embodiment and 1 motor of embodiment
The difference is that only, the present embodiment uses inner rotor core, and rotor 10 is placed in inside stator 11, there is gas therebetween
Gap, therefore the characteristics of the present embodiment motor is likewise supplied with the utility model motor.
Embodiment 3
Fig. 4 is also a rotor sectional type magnetic circuit complementary type permanent magnet synchronous motor.In the present embodiment, k=1, n=2, m=
3, that is, the motor is three-phase motor, includes 2 electric motor units, has k=1 to concentration armature winding in each electric motor units.Institute
With the number of, 11 magnetic teeth 110 of stator for Ns=24, magnetic teeth 110, which is equipped with, concentrates armature winding 111 and permanent magnet 112
Number is identical, is 12；It can be 10,14 that the number of segmentation magnetic inductive block in rotor 10, which is Nr=(2*m*k ± 1) n, Nr, this reality
It applies example and takes Nr=14.112 magnetizing directions of adjacent two permanent magnet in stator 11 on the contrary, A phase armature winding by two concentration armatures
Winding A1, A2 are composed in series.Half of rotor polar distance of relative position mutual deviation of armature winding A1 and A2 and rotor are concentrated, corresponds to 180
Spend electric angle.Therefore, concentrate armature winding A1 and A2 that there is complementary characteristic, when the two is composed in series A phase winding, wherein being produced
Raw back-emf harmonic content is cancelled out each other, and opposite potential is more sinusoidal.Equally, 112 sum aggregate of permanent magnet in the second electric motor units
Middle armature winding A3 and A4 also has the characteristic of first motor unit, and therefore, concentrating between armature winding A3 and A4 also has mutually
Mend characteristic.When concentration the armature winding A1, A2, A3 and A4 in two electric motor units are composed in series A phase winding, produced in concentratred winding
Raw back-emf higher hamonic wave is cancelled out each other, and A phase winding back-emf fundamental voltage amplitude is approximately to concentrate around A1, A2, A3 and A4 fundamental wave
Four times of amplitude have preferable sine.
Embodiment 4
Fig. 5 is also a three-phase rotor sectional type magnetic circuit complementary type permanent magnet synchronous motor.In the present embodiment, k=2, n=1,
M=3, the i.e. motor be three-phase motor, include 1 electric motor units, have in each electric motor units k=2 to concentrate armature winding,
So the number of 11 magnetic teeth 110 of stator is Ns=24, magnetic teeth 110 is equipped with for concentrating armature winding 111 and permanent magnet 112
Number is identical, is 12；It can be 11,13 that the number of segmentation magnetic inductive block in rotor, which is Nr=(2*m*k ± 1) n, Nr, the present embodiment
Take Nr=13.As it can be seen that the concentration armature winding 111 and permanent magnet 112 of the present embodiment motor are disposed alternately at stator magnetic teeth 110
On, any one phase armature winding the concatenated logarithm for concentrating armature winding 111 be k=2, threephase armature winding is spatially
Arrangement mode has the characteristics that k=2 concentration armature winding for belonging to same phase is placed in two adjacent armature winding magnetic teeths
(armature winding A1, A2 are concentrated in such as Fig. 4) belongs to out of phase concentration armature winding and is successively alternately placed in armature winding magnetic teeth
On.According to above-mentioned arrangement mode, the arrangement mode of armature winding in three-phase set are as follows: A1A2--B1B2--C1C2--A3A4--
B3B4--C3C4.2*k=4 concentration armature winding for belonging to same phase forms k=2 to armature winding in complementary sets, wherein arbitrarily
A pair concentrates two in armature winding to concentrate phase of the armature winding (as concentrated armature winding A1 and A3 or A2 and A4) with rotor
Half of rotor polar distance is differed to position, corresponding electromagnetic property spatially differs 180 degree electrical angle, forms complementary structure, series connection
When forming a phase winding, the back-emf harmonic wave in complementary concentration armature winding is cancelled out each other, and phase potential is more sinusoidal.It is worth saying
Bright, due to concentrating armature winding A1 and A2, the relative position of A3 and A4 and rotor 10 are closer to, and are concentrated around A1, A2, A3 with
When A4 is composed in series A phase winding, A phase winding back-emf amplitude is slightly smaller than concentrated around A1, A2, four times of A3 and A4 fundamental voltage amplitude.
Embodiment 5
Fig. 6 is also a five phase rotor sectional type magnetic circuit complementary type permanent magnet synchronous motors.In the present embodiment, k=1, n=1,
M=5, the i.e. motor be five-phase induction motor, include 1 electric motor units, have in each electric motor units k=1 to concentrate armature winding,
So the number of 11 magnetic teeth 110 of stator is Ns=20, magnetic teeth 110 is equipped with for concentrating armature winding 111 and permanent magnet 112
Number is identical, is 10；It can be 9,11 that the number of segmentation magnetic inductive block in rotor, which is Nr=(2*m*k ± 1) n, Nr, and the present embodiment takes
Nr=9.
In the present embodiment five-phase induction motor, every phase winding is composed in series by two concentration armature winding, as A phase winding is concentrated by two
Armature winding A1 and A2 at this point, the stator tooth center line where concentrating armature winding A1 faces rotor module center line, and collect
Stator tooth center line where middle armature winding A2 faces the center line between two rotor modules.Therefore, which equally has
The magnetic circuit complementary characteristic for having the utility model to be proposed, generated back-emf harmonic component is cancelled in every phase armature winding,
Sine degree of back electromotive force is good, and torque pulsation is small, especially suitable for brushless ac (BLAC) operational mode.
The rotor sectional type magnetic circuit complementary type permanent magnet synchronous motor of the utility model can be outer-rotor structure or internal rotor
Structure may operate in motor or Generator Status.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (6)
1. a kind of rotor sectional type magnetic circuit complementary type permanent magnet synchronous motor, including stator (11) and rotor (10), the stator
(11) and all there is for permeability magnetic material and therebetween air gap in rotor (10), and the stator (11) is equipped with magnetic teeth (110), leads
It is arranged alternately on magnetic tooth (110) and concentrates armature winding (111) and permanent magnet (112), which is characterized in that
The number of stator (11) magnetic teeth (110) is Ns=4*m*k*n；The magnetic teeth (110) be equipped with concentrate armature around
Group (111) is identical with the number of permanent magnet (112), is 2*m*k*n, and the number that the rotor (10) is equipped with segmentation magnetic inductive block is
Nr=(2*m*k ± 1) n；
The permanent magnet (112) and concentration armature winding (111) are disposed alternately on stator magnetic teeth (110), and armature winding twines
It is wound on a stator magnetic teeth (110), permanent magnet (112) Surface Mount radially magnetizes in tooth tip, two permanent magnet of arbitrary neighborhood
(112) magnetizing direction is opposite；
Wherein, m is the number of phases of motor, and n and k are positive integer, and n is electric motor units number, and k is any one phase electricity in each electric motor units
Concentration armature winding (111) logarithm of pivot windings in series.
2. a kind of rotor sectional type magnetic circuit complementary type permanent magnet synchronous motor according to claim 1, which is characterized in that each
Any one phase armature winding is composed in series concentration armature winding (111) by k in electric motor units, wherein any pair of concentration armature
Two concentration armature winding in winding (111) differ half of rotor polar distance with the relative position of rotor (10), correspond to 180 degree electricity
Air horn degree, the two have complementary characteristic.
3. a kind of rotor sectional type magnetic circuit complementary type permanent magnet synchronous motor according to claim 1, which is characterized in that described
A kind of rotor sectional type magnetic circuit complementary type permanent magnet synchronous motor is internal rotor or outer-rotor structure.
4. a kind of rotor sectional type magnetic circuit complementary type permanent magnet synchronous motor according to claim 1, which is characterized in that described
Stator (11) or rotor (10) constitute bimorph transducer or birotor segmented magnetic circuit complementary type permanent magnet synchronous electric by overturning variation
Machine.
5. a kind of rotor sectional type magnetic circuit complementary type permanent magnet synchronous motor according to claim 1, which is characterized in that described
Concentrating armature winding (111) is copper or superconductor.
6. a kind of rotor sectional type magnetic circuit complementary type permanent magnet synchronous motor described in any one according to claim 1~5, special
Sign is, a kind of rotor sectional type magnetic circuit complementary type permanent magnet synchronous motor is motor or generator.
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| CN201920600576.XU CN209676100U (en) | 2019-04-26 | 2019-04-26 | A kind of rotor sectional type magnetic circuit complementary type permanent magnet synchronous motor |
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| CN201920600576.XU CN209676100U (en) | 2019-04-26 | 2019-04-26 | A kind of rotor sectional type magnetic circuit complementary type permanent magnet synchronous motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109962596A (en) * | 2019-04-26 | 2019-07-02 | 南京航空航天大学 | A kind of rotor sectional type magnetic circuit complementary type permanent magnet synchronous motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109962596A (en) * | 2019-04-26 | 2019-07-02 | 南京航空航天大学 | A kind of rotor sectional type magnetic circuit complementary type permanent magnet synchronous motor |
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