CN106941295A - A kind of mechanism for weakening torque ripple of permanent-magnet motor - Google Patents
A kind of mechanism for weakening torque ripple of permanent-magnet motor Download PDFInfo
- Publication number
- CN106941295A CN106941295A CN201710307017.5A CN201710307017A CN106941295A CN 106941295 A CN106941295 A CN 106941295A CN 201710307017 A CN201710307017 A CN 201710307017A CN 106941295 A CN106941295 A CN 106941295A
- Authority
- CN
- China
- Prior art keywords
- rotor
- support shaft
- permanent
- torque ripple
- magnet motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a kind of mechanism for weakening torque ripple of permanent-magnet motor, including stator, rotor and it is arranged at the transmission mechanism of rotor tip, transmission mechanism includes internal gear, support shaft and the travelling gear for being arranged in support shaft and being engaged with internal gear, travelling gear is rotated with rotor and is connected, support shaft be arranged on rotor and with the diameter parallel of rotor, internal gear is fixedly installed on stator or electric machine casing, and internal gear is coaxially disposed with stator.Simple in construction, low cost of manufacture of the invention, enables to motor output torque more to stablize.
Description
Technical field
The present invention relates to magneto field, specifically a kind of mechanism for weakening motor torque ripple.
Background technology
Motor is substantially a kind of calutron for being changed energy between electric energy and mechanical energy, and this energy
Basis is exactly air-gap field necessary to the process of conversion.The method for providing air-gap field for motor has two kinds：A kind of method is
Electric current is passed through to special Exciting Windings for Transverse Differential Protection, magnetic field, i.e. electro-magnetic motor are set up by exciting current.Electro-magnetic motor needs excitation system
System and exciting current.Another method does not then provide excitation by external circuit, but by the permanent magnet that is fixed on rotor come
Magnetic field is produced, therefore does not need slip-ring brush.This motor is magneto.
Compared to traditional electro-magnetic motor, magneto does not need Exciting Windings for Transverse Differential Protection and field power supply, can improve power of motor because
Number, simplifies electric machine structure.Rotor copper loss is not present during due to stable operation, and eliminates the maintenance of excitation unit, therefore permanent magnetism
Motor has reduction loss raising efficiency, cooling is simpler, run the advantage such as more reliable.It is based on above advantage, permanent magnetism
The application field of motor is quite varied, almost throughout Aero-Space, national defence, industrial and agricultural production and the every field of daily life.
And with the development of modern control technology, the raising of permanent magnetic material performance, the reduction of price and processing technology it is perfect.Permanent magnetism
The species of motor also constantly expands with application field.
And in numerous application scenarios, thering are many occasions to need the motor there is less torque pulsation, reduction vibration is with making an uproar
Sound.Torque pulsation is an inherent shortcoming of magneto.When torque pulsation frequency and motor stator or rotor resonance frequently
When rate is consistent, the vibration in motor and noise can be amplified.In addition, this problem of torque pulsation meeting limiting motor exists in the motor
Application in High Definition Systems.Therefore, torque pulsation is an important indicator for weighing motor performance.How to weaken or even eliminate
Torque pulsation has highly important meaning.
Torque pulsation is influenceed by electric machine structure parameter and control strategy.Electric machine structure parameter causes the factor of torque pulsation
Mainly there are influence, the influence of tooth slot structure, the influence of current commutation, the influence of armature-reaction and the mechanical technology of electromagnetic factors
Influence etc..
At present, there is the method for many weakening torque pulsations, for example：Skewed stator slot, skewed-rotor, optimization magnetic pole shape
Shape, coordinated and the method such as Optimal Control Strategy using segmentation magnetic pole, pole groove.These methods can weaken a part of torque arteries and veins
It is dynamic, but can not thoroughly solve the problems, such as torque pulsation.
The content of the invention
For the deficiencies in the prior art, torque ripple of permanent-magnet motor is weakened it is an object of the invention to provide one kind
Mechanism, weaken magneto torque pulsation.
For achieving the above object, the technical solution adopted by the present invention is：A kind of weakening torque ripple of permanent-magnet motor
Mechanism, including stator, rotor and the transmission mechanism for being arranged at rotor tip, transmission mechanism include internal gear, support shaft and setting
In the travelling gear engaged in support shaft and with internal gear, travelling gear is rotated with rotor and is connected, and support shaft is arranged on rotor
And with the diameter parallel of rotor, internal gear is fixedly installed on stator or electric machine casing, and internal gear is coaxially disposed with stator.
It is preferred that, transmission mechanism includes multiple travelling gears, and travelling gear is corresponded with support shaft, all along rotor
To direction on, between the outboard end of adjacent supports axle be provided with metal connecting plate.
It is preferred that, rotor tip is provided with multigroup separate transmission mechanism.
It is preferred that, two ends of rotor is equipped with transmission mechanism.
It is preferred that, support shaft is arranged in the lightening hole of rotor, and the length of support shaft is more than the length of rotor.
It is preferred that, support shaft is metal bar.
Simple in construction, low cost of manufacture of the invention, with stronger promotional value, the present invention is rotated using travelling gear
Speed substitutes the big mechanism of rotary inertia, and the structure can substitute traditional big flywheel, enable to motor output torque more steady
It is fixed, vibration and noise during motor operation is reduced, the application field of motor is expanded.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the structural representation of the embodiment of the present invention 1；
Fig. 3 is the structural representation of the embodiment of the present invention 2；
Fig. 4 is the structural representation of the embodiment of the present invention 3；
Fig. 5 is the structural representation of the embodiment of the present invention 4.
Embodiment
Weaken the mechanism of torque ripple of permanent-magnet motor as shown in figure 1, a kind of, including stator 1, rotor 2 and be arranged at rotor 2
The transmission mechanism of end, transmission mechanism includes internal gear 3, support shaft 4 and is arranged in support shaft 4 and is engaged with internal gear 3
Travelling gear 5, the medial extremity of support shaft 4 is connected and support shaft 4 and the diameter parallel of rotor 2 with the end of rotor 2, and internal gear 3 is fixed
On stator 1 or electric machine casing 8, and internal gear 3 is coaxially disposed with stator 1.
It is preferred that, transmission mechanism includes multiple travelling gears 5, and travelling gear 5 is corresponded with support shaft 4, turns on edge
On the circumferential direction of son 2, metal connecting plate 6 is provided between the outboard end of adjacent supports axle 4, prevent support shaft 4 shift and
Distortion.
It is preferred that, the end of rotor 2 is provided with multigroup separate transmission mechanism, and the travelling gear 5 of every group of transmission mechanism exists
In same perpendicular, the travelling gear 5 of each group realizes Multi-layers distributing, does not influence each other.
Embodiment 1
As shown in Fig. 2 internal gear 3 is fixed on stator 1, travelling gear 5 is connected by bearing with support shaft 4, and support shaft 4 is led to
Cross welding or other fixed forms are connected with rotor 2, the one end of rotor 2 is provided with transmission mechanism, when motor works, travelling gear 5
Moved with the rotation of rotor 2, simultaneously because travelling gear 5 is engaged with fixed internal gear 3 on the stator 1, travelling gear 5
Body is also around the high speed rotation of support shaft 4, when rotor 2 rotates a circle, the rotation of travelling gear 5 multiple cycles itself, specific periodicity with
Travelling gear 5 is relevant with the tooth ratio of internal gear 3.
When motor output torque pulsation is steady, travelling gear 5 is moved with rotor 2, while itself high speed rotation；Work as motor
Torque occurs after pulsation, and travelling gear 5 continues to maintain former speed to occur high speed rotation due to self inertia effect.In internal tooth
In the presence of wheel 3, rotor 2 can be hindered to pulse, weaken the amplitude of torque pulsation, the vibration of reduction motor operation and noise, maintain
The steady torque output of rotor.
Embodiment 2
As shown in figure 3, internal gear 3 is fixed on stator 1, the two ends of rotor 2 are equipped with transmission mechanism, and its course of work is with reference to real
Example 1 is applied, the transmission mechanism at the two ends of rotor 2 can make the bigger rotary inertia of generation, can further weaken the amplitude of torque pulsation,
Motor operation vibration and noise are reduced, the steady torque output of rotor is maintained.
Embodiment 3
As shown in figure 4, internal gear 3 is fixed on stator 1, to improve magneto dynamic responding speed, it will usually in rotor 2
Some lightening holes 7 are designed on iron core, this is prior art, it is preferred that support shaft 4 is metal bar, or select other rigidity strong
And non-magnetic material, the normal work of motor is not influenceed, and support shaft 4 is arranged in the lightening hole 7 of rotor 2, the length of support shaft 4
Degree is more than the length of rotor 2, so as to add the rotary inertia of transmission mechanism, travelling gear 5 is fixedly connected with support shaft 4, branch
Support axle 4 is rotated by bearing and is arranged in lightening hole 7, and support shaft 4 can be rotated in the lightening hole 7, thus realize travelling gear 5 with
The rotation connection of rotor 2, its course of work is with reference to embodiment 1.
Embodiment 4
As shown in figure 5, internal gear 3 is fixed on electric machine casing 8, stator slot will not be stopped, can be pre- for the winding overhang of stator 1
Spacing, and then motor is maintained higher copper factor, its course of work is with reference to embodiment 1.
Above example is only used to illustrative and not limiting technical scheme, although with reference to above-described embodiment to this hair
It is bright to be described in detail, it will be understood by those within the art that：Still the present invention can be modified or be waited
With replacement, any modification or partial replacement without departing from the spirit and scope of the present invention, it all should cover the power in the present invention
Among sharp claimed range.
Claims (6)
1. a kind of mechanism for weakening torque ripple of permanent-magnet motor, it is characterised in that：Including stator, rotor and it is arranged at rotor tip
Transmission mechanism, transmission mechanism includes internal gear, support shaft and the travelling gear that is arranged in support shaft and is engaged with internal gear,
Travelling gear and rotor are rotated and are connected, support shaft be arranged on rotor and with the diameter parallel of rotor, internal gear is fixedly installed on
On stator or electric machine casing, and internal gear is coaxially disposed with stator.
2. a kind of mechanism for weakening torque ripple of permanent-magnet motor according to claim 1, it is characterised in that：The driver
Structure includes multiple travelling gears, and travelling gear is corresponded with support shaft, along the direction along rotor circumference, adjacent supports axle
Outboard end between be provided with metal connecting plate.
3. a kind of mechanism for weakening torque ripple of permanent-magnet motor according to claim 2, it is characterised in that：The rotor-end
Portion is provided with multigroup separate transmission mechanism.
4. a kind of mechanism of weakening torque ripple of permanent-magnet motor according to claim 1 or 3, it is characterised in that：Described turn
Sub- two ends are equipped with transmission mechanism.
5. a kind of mechanism of weakening torque ripple of permanent-magnet motor according to claim 1 or 3, it is characterised in that：The branch
Support axle is arranged in the lightening hole of rotor, and the length of support shaft is more than the length of rotor.
6. a kind of mechanism of weakening torque ripple of permanent-magnet motor according to claim 1 or 3, it is characterised in that：The branch
Support axle is metal bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710307017.5A CN106941295B (en) | 2017-05-04 | 2017-05-04 | A kind of mechanism for weakening torque ripple of permanent-magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710307017.5A CN106941295B (en) | 2017-05-04 | 2017-05-04 | A kind of mechanism for weakening torque ripple of permanent-magnet motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106941295A true CN106941295A (en) | 2017-07-11 |
| CN106941295B CN106941295B (en) | 2018-06-29 |
Family
ID=59464081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710307017.5A Expired - Fee Related CN106941295B (en) | 2017-05-04 | 2017-05-04 | A kind of mechanism for weakening torque ripple of permanent-magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106941295B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6329731B1 (en) * | 1999-08-10 | 2001-12-11 | The Swatch Group Management Services Ag | Driving unit including a liquid cooled electric motor and a planetary gear |
| CN201260107Y (en) * | 2008-08-27 | 2009-06-17 | 莫祖雄 | Planetary electric motor |
| CN103199650A (en) * | 2013-01-05 | 2013-07-10 | 张元敏 | Three-phase inner rolling type meshing motor |
| CN105099069A (en) * | 2014-05-22 | 2015-11-25 | 奥迪股份公司 | Electric machine |
| CN105958725A (en) * | 2016-06-16 | 2016-09-21 | 安乃达驱动技术（江苏）有限公司 | Composite motor structure |
| CN205901557U (en) * | 2016-08-12 | 2017-01-18 | 河南行星智能电子科技有限公司 | Novel brushless motor that built -in planetary reducer constructs |
-
2017
- 2017-05-04 CN CN201710307017.5A patent/CN106941295B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6329731B1 (en) * | 1999-08-10 | 2001-12-11 | The Swatch Group Management Services Ag | Driving unit including a liquid cooled electric motor and a planetary gear |
| CN201260107Y (en) * | 2008-08-27 | 2009-06-17 | 莫祖雄 | Planetary electric motor |
| CN103199650A (en) * | 2013-01-05 | 2013-07-10 | 张元敏 | Three-phase inner rolling type meshing motor |
| CN105099069A (en) * | 2014-05-22 | 2015-11-25 | 奥迪股份公司 | Electric machine |
| CN105958725A (en) * | 2016-06-16 | 2016-09-21 | 安乃达驱动技术（江苏）有限公司 | Composite motor structure |
| CN205901557U (en) * | 2016-08-12 | 2017-01-18 | 河南行星智能电子科技有限公司 | Novel brushless motor that built -in planetary reducer constructs |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106941295B (en) | 2018-06-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4434045B2 (en) | Rotating electric machine and wind power generation system | |
| CN101741200B (en) | Claw-pole motor | |
| CN103180611B (en) | For the electric motor-driven compressor of vehicle | |
| CN204156618U (en) | Brushless electric machine | |
| CN205622461U (en) | Device of making an uproar falls in brushless motor | |
| CN204030760U (en) | The rotor structure of permagnetic synchronous motor | |
| US10680475B2 (en) | Rotor for rotary electric machine | |
| CN107852045A (en) | Electric rotating motivation | |
| CN109038894A (en) | A kind of disk rotor structure and disc type electric machine | |
| CN204858787U (en) | Rotor punching and permanent -magnet machine who uses thereof | |
| CN109412294B (en) | Permanent magnet synchronous motor of asymmetric V-shaped magnetic steel of electric automobile | |
| CN204721115U (en) | A kind of stator structure of double-rotor radial magnetic field permanent magnet motor | |
| CN101944787A (en) | Outer surface structure of magnetic steel embedded rotor | |
| CN105119450A (en) | Low-speed large-torque magnetic drive composite motor | |
| CN100385773C (en) | Column-projection-polar composite rotor structure | |
| CN103326530B (en) | 12/14 structure bearingless switched reluctance motor | |
| CN106941295A (en) | A kind of mechanism for weakening torque ripple of permanent-magnet motor | |
| CN207339438U (en) | Motor | |
| CN106803709B (en) | Permanent magnet synchronous motor and assembling method thereof | |
| CN212086044U (en) | Brushless motor | |
| CN204906033U (en) | Permanent -magnet machine's rotor structure | |
| CN210041604U (en) | 24 groove 10 utmost point axial magnetic current motor and electric vehicle | |
| CN209593227U (en) | A kind of ceiling fan even air gap brushless single phase motor | |
| CN207939379U (en) | Switched reluctance machines | |
| CN108683275A (en) | Direct driving motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180629 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |