CN206313551U - A kind of magneto - Google Patents
A kind of magneto Download PDFInfo
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- CN206313551U CN206313551U CN201621473555.9U CN201621473555U CN206313551U CN 206313551 U CN206313551 U CN 206313551U CN 201621473555 U CN201621473555 U CN 201621473555U CN 206313551 U CN206313551 U CN 206313551U
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Abstract
The utility model is related in a kind of magneto, magnetic induction intensity at second arc surface of soft magnetism pole is less than the magnetic induction intensity at the first arc surface of permanent-magnet pole, but the second arc surface due to soft magnetism pole and the air gap between the cavity volume inwall of rotor cavity volume are less than the air gap between first arc surface and the cavity volume inwall of rotor cavity volume of permanent-magnet pole, so, magnetic pressure drop between second arc surface of soft magnetism pole and the cavity volume inwall of rotor cavity volume is less than the magnetic pressure drop between first arc surface and the cavity volume inwall of rotor cavity volume of permanent-magnet pole, so, soft magnetism pole differs smaller with the magnetic induction intensity that the magnetic field produced by permanent-magnet pole is transmitted to stator core, so, the pulsation of motor torque is just smaller, vibration and noise produced by motor is just smaller.
Description
Technical field
The utility model is related to a kind of magneto and its control method, belongs to technical field of motor manufacture.
Background technology
Why efficiently magneto is a kind of high efficiency motor, because permanent magnet machine rotor uses rare earth permanent-magnetic material
The permanent magnet pole (permanent-magnet pole) being made carrys out excitation, substituted for the mode of traditional magnet exciting coil excitation, thus larger reduction
The copper loss of motor, improves the efficiency of motor.Simultaneously magneto have power factor higher and it is easily controllable the characteristics of,
It is widely applied in fields such as electric automobile, Aero-Space, industrial equipments.
Due to permanent-magnet material costly, if the magnetic pole of rotor all uses permanent magnet pole, motor into
Originally will be high, permanent-magnet pole is made up of permanent-magnet material, and soft magnetism pole is the boss on rotor core, and rotor core is by ferromagnetic material
Material is made, and soft magnetism magnetic pole itself can not produce magnetic field, and it is fixed that the main field that permanent-magnet pole is produced is transferred to by its corresponding air gap
Sub- iron core, then enter soft magnetism pole by soft magnetic pole surfaces air gap, so soft magnetism pole surface induction intensity is less than permanent-magnet pole surface
Magnetic induction intensity, due in the magneto that is distributed with soft pole piece spacing using permanent-magnet pole, the magnetic at permanent-magnet pole and soft magnetism pole
, this can cause the magnetic induction intensity in motor unbalanced, occur the phenomenon of torque pulsation when motor operation, and
Motor is caused to produce vibration and noise；Additionally, generally, the magnetic induction intensity at soft magnetism pole is less than produced by permanent-magnet pole
Magnetic induction intensity, so, the magneto being distributed with soft pole piece spacing using permanent-magnet pole relative to all using permanent-magnet pole forever
The magnetic induction intensity that magneto can be generated is smaller, and the output torque of motor is also smaller.
Utility model content
The shortcoming of prior art in view of the above, the purpose of this utility model is to provide a kind of magneto and its control
Method processed, can reduce the vibration produced by motor and noise.
To achieve the above object, the utility model provides a kind of magneto, adopts the following technical scheme that：A kind of Permanent Magnet and Electric
Machine, including stator core and rotor core, the stator core have the rotor cavity volume of cylinder, and the rotor core wears
In the rotor cavity volume, the outer peripheral face of the rotor core is provided with multiple soft magnetism poles；Set between two adjacent soft magnetism poles
There is a permanent-magnet pole, the permanent-magnet pole has first arc surface relative with the cavity volume inwall of rotor cavity volume, and the soft magnetism is great
There is second arc surface relative with the cavity volume inwall of rotor cavity volume；Between second arc surface and the cavity volume inwall of rotor cavity volume
Air gap less than air gap between the first arc surface and the cavity volume inwall of rotor cavity volume.
Preferably, the air gap between the middle part of second arc surface and the cavity volume inwall of rotor cavity volume is less than first
Air gap between the both sides position of arc surface and the cavity volume inwall of rotor cavity volume.
Preferably, the stator core has the armature tooth that multiple circumferencial directions along stator core are distributed, adjacent two
Teeth groove of the opening towards rotor core is formed between individual armature tooth, opening towards the auxiliary of rotor core is additionally provided with the armature tooth
Help groove.
Further, the A/F of the auxiliary tank and the A/F of teeth groove are equal.
Further, the auxiliary tank is uniformly distributed with teeth groove along the circumferencial direction of rotor cavity volume.
The utility model also provides a kind of control method of magneto, adopts the following technical scheme that：A kind of magneto
Control method, for controlling above-mentioned technical proposal or the magneto described in any preferred technical scheme, including following control
Step processed：
1) phase angle of the induced electromotive force produced by the Exciting Windings for Transverse Differential Protection of detection stator core；
2) phase angle of the terminal voltage of detection motor；
If 3) by step 1) in induced electromotive force obtained by detection phase angle and step 2) in terminal voltage obtained by detection
Phase angle be compared, if the difference at the phase angle of the phase angle of induced electromotive force and terminal voltage is less than 45 degree, change end
The phase angle of voltage makes the phase angle of terminal voltage increase with the phase angle difference of induced electromotive force；
4) repeat step 1) to 3), until the phase angle of induced electromotive force is more than 45 with the difference at the phase angle of terminal voltage
Degree.
As described above, a kind of magneto that the utility model is related to, has the advantages that：Of the present utility model
In a kind of magneto, because soft magnetism magnetic pole itself can not produce magnetic field, the magnetic induction at the second arc surface of soft magnetism pole is strong
Degree less than the magnetic induction intensity at the first arc surface of permanent-magnet pole, but by adjust soft magnetism pole and rotor cavity volume cavity volume inwall it
Between air gap so that first of air gap between the second arc surface of soft magnetism pole and the cavity volume inwall of rotor cavity volume less than permanent-magnet pole
Air gap between arc surface and the cavity volume inwall of rotor cavity volume, so, the second arc surface of soft magnetism pole and the cavity volume of rotor cavity volume
Magnetic pressure drop between inwall drops less than the magnetic pressure between first arc surface and the cavity volume inwall of rotor cavity volume of permanent-magnet pole, so,
Soft magnetism pole differs smaller with the magnetic induction intensity that the magnetic field produced by permanent-magnet pole is transmitted to stator core, so, motor internal magnetic
Field is relatively symmetrical, and the pulsation of motor torque is just smaller, and the vibration and noise produced by motor are just smaller.With one kind of the present utility model
Correspondingly, a kind of control method of magneto of the present utility model also has above-mentioned beneficial effect to magneto certainly, herein
Repeat no more.
Brief description of the drawings
Fig. 1 is shown as a kind of structural representation of the first embodiment of magneto of the present utility model.
Fig. 2 is shown as the enlarged diagram of the partial structurtes in Fig. 1.
Fig. 3 is shown as a kind of structural representation of the second embodiment of magneto of the present utility model.
Fig. 4 is shown as the enlarged diagram of the partial structurtes in Fig. 3.
Component label instructions
The arc surface of 1 stator core 7 second
The armature tooth of 2 rotor core 8
The teeth groove of 3 rotor cavity volume 9
The auxiliary tank of 4 soft magnetism pole 10
The cavity volume inwall of 5 permanent-magnet pole 11
The Exciting Windings for Transverse Differential Protection of 6 first arc surface 12
Specific embodiment
Implementation method of the present utility model is illustrated by particular specific embodiment below, those skilled in the art can be by this
Content disclosed by specification understands other advantages of the present utility model and effect easily.
It should be clear that structure, ratio, size depicted in this specification institute accompanying drawings etc., is only used to coordinate specification to be taken off
The content shown, so that those skilled in the art understands and reads, is not limited to the enforceable restriction bar of the utility model
Part, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influenceing
Under effect that the utility model can be generated and the purpose to be reached, all should still fall in the technology disclosed in the utility model
In the range of Rong get Neng is covered.Meanwhile, in this specification it is cited as " on ", D score, "left", "right", " centre " and " one "
Deng term, be merely convenient to narration understand, and be not used to limit the enforceable scope of the utility model, its relativeness
It is altered or modified, under without essence change technology contents, when being also considered as the enforceable category of the utility model.
First embodiment：
As depicted in figs. 1 and 2, the utility model provides a kind of magneto, including stator core 1 and rotor core 2, institute
Stating stator core 1 has the rotor cavity volume 3 of cylinder, and the rotor core 2 is arranged in the rotor cavity volume 3, described turn
The outer peripheral face of sub- iron core 2 is provided with multiple soft magnetism poles 4；A permanent-magnet pole 5 is provided between two adjacent soft magnetism poles 4, such as Fig. 2 institutes
Show, the permanent-magnet pole 5 have first arc surface 6 relative with the cavity volume inwall 11 of rotor cavity volume 3, the soft magnetism pole 4 have with
The second relative arc surface 7 of the cavity volume inwall 11 of rotor cavity volume 3；The cavity volume inwall 11 of second arc surface 7 and rotor cavity volume 3
Between air gap less than air gap between the first arc surface 6 and the cavity volume inwall 11 of rotor cavity volume 3.First arc surface of permanent-magnet pole
It is the polar arc of permanent-magnet pole, the second arc surface of soft magnetism pole is the polar arc of soft magnetism pole, and " air gap " refers to the first arc surface 6 or the second
Along the distance of rotor core radial direction between arc surface 7 and the cavity volume inwall 11 of rotor cavity volume 3, in a kind of permanent magnetism of the present utility model
In motor, because soft magnetism magnetic pole itself can not produce magnetic field, the magnetic induction intensity at the second arc surface of soft magnetism pole is less than forever
Magnetic induction intensity at first arc surface of magnetic pole, but by adjusting the gas between soft magnetism pole and the cavity volume inwall of rotor cavity volume
Gap so that first arc surface of the air gap less than permanent-magnet pole between the second arc surface of soft magnetism pole and the cavity volume inwall of rotor cavity volume
And the air gap between the cavity volume inwall of rotor cavity volume, so, the second arc surface of soft magnetism pole and the cavity volume inwall of rotor cavity volume it
Between magnetic pressure drop less than permanent-magnet pole the first arc surface and the cavity volume inwall of rotor cavity volume between magnetic pressure drop, so, soft magnetism pole
The magnetic induction intensity for being transmitted to stator core with the magnetic field produced by permanent-magnet pole differs smaller, so, motor internal magnetic field is more right
Claim, the pulsation of motor torque is just smaller, and the vibration and noise produced by motor are just smaller.
In a kind of magneto of the present utility model, it is provided with stator core 1 and is used to be the excitation of the excitation of stator core 1
Winding 12, rotor core 2 is provided with the opposite polarity of the permanent-magnet pole 5 and soft magnetism pole 4 being spaced apart, permanent-magnet pole 5 and soft magnetism pole 4,
Magnetic induction intensity at second arc surface of soft magnetism pole 4 is less than the magnetic induction intensity at the first arc surface of permanent-magnet pole, in order to subtract
The pulsation of small machine output torque, the air gap between second arc surface 7 and the cavity volume inwall 11 of rotor cavity volume 3 of soft magnetism pole 4 is small
Air gap between first arc surface 6 and the cavity volume inwall 11 of rotor cavity volume 3 of permanent-magnet pole 5.The radian of second arc surface 7 with
The radian of first arc surface 6 is unequal, and the second arc surface 7 of soft magnetism pole 4 holds than the first arc surface 6 of permanent-magnet pole 5 closer to rotor
The cavity volume inwall 11 in chamber 3.On the circumferencial direction of the second arc surface 7, the magnetic induction intensity ratio at the middle part of the second arc surface 7
The magnetic induction intensity at the both sides position of the second arc surface 7 is smaller, as a preferred mode, the second circle of each soft magnetism pole 4
Air gap between the middle part of cambered surface 7 and the cavity volume inwall 11 of rotor cavity volume 3 is less than the both sides position of the first arc surface 6 and turns
Air gap between the cavity volume inwall 11 of sub- cavity volume 3, so, the air gap at the middle part of the second arc surface 7 is smaller, the second circular arc
Magnetic pressure drop at the middle part in face 7 is also just smaller, so magnetic induction intensity at the air gap that is faced of soft magnetism pole and permanent-magnet pole
Difference is smaller, can just make the magnetic induction intensity everywhere along the circumferencial direction of rotor core 2 more balanced, so that motor torque
Pulsation is smaller.
Second embodiment：
In a kind of magneto of the present utility model, the magnetic field in motor can produce teeth groove to turn the teeth groove of stator core
Square, soft magnetism pole causes the magnetic field in motor asymmetric with the alternate structure of permanent-magnet pole, and when motor is rotated, cogging torque can cause electricity
The pulsation increase of machine output torque.From unlike the magneto of first embodiment, the magneto of second embodiment is first
On the basis of the magneto of embodiment, auxiliary tank 10 is increased on the cavity volume inwall 11 of the rotor cavity volume 3 of stator core 1.
As shown in Figure 3 and Figure 4, stator core 1 has the armature tooth 8 that multiple circumferencial directions along stator core 1 are distributed, adjacent two
Teeth groove 9 of the opening towards rotor core 2 is formed between armature tooth 8, opening towards rotor core 2 is additionally provided with the armature tooth 8
Auxiliary tank 10.Can so make the torque pulsation of teeth groove 9 of motor more uniform, reduce vibration and the noise of motor.Preferably,
The A/F of the auxiliary tank 10 is equal with the A/F of teeth groove 9, increases the cycle of cogging torque, weakens cogging torque
Amplitude.It is further preferable that auxiliary tank 10 is uniformly distributed with teeth groove 9 along the circumferencial direction of rotor cavity volume 3, so can further subtract
The torque of teeth groove 9 of small machine, reduces vibration and the noise of motor.
It is soft due to employing the mode that permanent-magnet pole 5 and soft magnetism pole 4 are spaced apart in a kind of magneto of the present utility model
Magnetic induction intensity produced by magnetic pole 4 is weaker, so, with all using the magneto of permanent-magnet pole 5 compared with, it is of the present utility model
A kind of output torque of magneto is smaller.The shortcoming small to make up output torque, the utility model provides a kind of magneto
Control method, introduce reluctance torque, increase motor output torque.The output torque computing formula of magneto is as follows：
Wherein,
Te is the output torque of motor；
M is the number of phases of motor；
The induced electromotive force of stator when E0 is zero load；
U is the terminal voltage of motor；
ω is the mechanical angular speed of motor；
Xd is direct-axis synchronous reactance；
Xq is quadrature axis synchronous reactance；
θ is power angle.
In the computing formula of above-mentioned motor output torque, Section 1 represents permanent magnet torque, and Section 2 is reluctance torque.
A kind of magneto of the present utility model, as a result of the structure that permanent-magnet pole 5 and soft magnetism pole 4 are spaced apart, permanent-magnet pole 5 and soft
The material of magnetic pole 4 is different, and Xq is more than Xd, so 1/Xq-1/Xd is negative value, in the computing formula of above-mentioned motor output torque
The reluctance torque of Section 2 is with permanent magnet torque direction conversely, in order to reluctance torque is converted into useful torque, can pass through
Control system controls power angle θ, makes power angle θ more than 45 degree, then second in the computing formula of above-mentioned motor output torque
The reluctance torque of item is on the occasion of identical with permanent magnet torque direction；Reluctance torque and permanent magnet torque Tongfang in this case
To after both are superimposed so that the output torque increase of motor.Power angle θ can be characterized as between induced electromotive force and terminal voltage
Phase difference, so, control the phase difference between induced electromotive force and terminal voltage to turn reluctance torque by control system
Turn to useful torque equidirectional with permanent magnet torque.Thus, the utility model also provides a kind of controlling party of magneto
Method, is used to improve the output torque of motor, and a kind of control method of magneto of the present utility model is used to control above-mentioned technology
Magneto described in scheme or any preferred technical scheme, including following rate-determining steps：
1) phase angle of the induced electromotive force produced by the Exciting Windings for Transverse Differential Protection 12 of detection stator core 1；
2) phase angle of the terminal voltage of detection motor；
If 3) by step 1) in induced electromotive force obtained by detection phase angle and step 2) in terminal voltage obtained by detection
Phase angle be compared, if the difference at the phase angle of the phase angle of induced electromotive force and terminal voltage is less than 45 degree, change end
The phase angle of voltage makes the phase angle of terminal voltage increase with the phase angle difference of induced electromotive force；
4) repeat step 1) to 3), until the phase angle of induced electromotive force is more than 45 with the difference at the phase angle of terminal voltage
Degree.
In above-mentioned steps 1) in, it is the sense produced by the Exciting Windings for Transverse Differential Protection 12 that stator core 1 is detected under motor load state
Answer the phase angle of electromotive force.
In sum, the utility model effectively overcomes various shortcoming of the prior art and has high industrial exploitation value
Value.
Above-described embodiment only illustrative principle of the present utility model and its effect are new not for this practicality is limited
Type.Any person skilled in the art can all be carried out under without prejudice to spirit and scope of the present utility model to above-described embodiment
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the essence disclosed in the utility model
All equivalent modifications completed under god and technological thought or change, should be covered by claim of the present utility model.
Claims (5)
1. a kind of magneto, including stator core (1) and rotor core (2), the stator core (1) turning with cylinder
Sub- cavity volume (3), the rotor core (2) is arranged in the rotor cavity volume (3), it is characterized in that：Outside the rotor core (2)
Side face is provided with multiple soft magnetism poles (4)；A permanent-magnet pole (5), the permanent-magnet pole are provided between two adjacent soft magnetism poles (4)
(5) with first arc surface (6) relative with the cavity volume inwall (11) of rotor cavity volume (3), the soft magnetism pole (4) with rotor
Relative the second arc surface (7) of the cavity volume inwall (11) of cavity volume (3)；Second arc surface (7) and the cavity volume of rotor cavity volume (3)
Air gap between inwall (11) is less than the air gap between the first arc surface (6) and the cavity volume inwall (11) of rotor cavity volume (3).
2. magneto according to claim 1, it is characterised in that：The middle part of second arc surface (7) with turn
Air gap between the cavity volume inwall (11) of sub- cavity volume (3) is less than the both sides position of the first arc surface (6) and the appearance of rotor cavity volume (3)
Air gap between cavity wall (11).
3. magneto according to claim 1, it is characterised in that：The stator core (1) is with multiple along stator iron
The armature tooth (8) of the circumferencial direction distribution of core (1), forms opening towards rotor core (2) between two adjacent armature tooths (8)
Teeth groove (9), be additionally provided with the armature tooth (8) opening towards rotor core (2) auxiliary tank (10).
4. magneto according to claim 3, it is characterised in that：The A/F and teeth groove of the auxiliary tank (10)
(9) A/F is equal.
5. magneto according to claim 3, it is characterised in that：The auxiliary tank (10) is held with teeth groove (9) along rotor
The circumferencial direction in chamber (3) is uniformly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621473555.9U CN206313551U (en) | 2016-12-30 | 2016-12-30 | A kind of magneto |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621473555.9U CN206313551U (en) | 2016-12-30 | 2016-12-30 | A kind of magneto |
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| Publication Number | Publication Date |
|---|---|
| CN206313551U true CN206313551U (en) | 2017-07-07 |
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ID=59247721
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621473555.9U Active CN206313551U (en) | 2016-12-30 | 2016-12-30 | A kind of magneto |
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| Country | Link |
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| CN (1) | CN206313551U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107046337A (en) * | 2016-12-30 | 2017-08-15 | 浙江众邦机电科技有限公司 | A kind of magneto and its control method |
| CN109510337A (en) * | 2018-10-31 | 2019-03-22 | 浙江大学 | A kind of double-stator permanent magnet generator of alternating poles |
| CN117239969A (en) * | 2023-11-15 | 2023-12-15 | 湖南大学 | Outer rotor variable magnetic flux alternating pole permanent magnet synchronous motor |
-
2016
- 2016-12-30 CN CN201621473555.9U patent/CN206313551U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107046337A (en) * | 2016-12-30 | 2017-08-15 | 浙江众邦机电科技有限公司 | A kind of magneto and its control method |
| CN107046337B (en) * | 2016-12-30 | 2024-02-02 | 浙江众邦机电科技有限公司 | Permanent magnet motor and control method thereof |
| CN109510337A (en) * | 2018-10-31 | 2019-03-22 | 浙江大学 | A kind of double-stator permanent magnet generator of alternating poles |
| CN117239969A (en) * | 2023-11-15 | 2023-12-15 | 湖南大学 | Outer rotor variable magnetic flux alternating pole permanent magnet synchronous motor |
| CN117239969B (en) * | 2023-11-15 | 2024-03-15 | 湖南大学 | Outer rotor variable magnetic flux alternating pole permanent magnet synchronous motor |
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