CN208386261U - A kind of permanent magnet direct driving motor - Google Patents
A kind of permanent magnet direct driving motor Download PDFInfo
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- CN208386261U CN208386261U CN201821127089.8U CN201821127089U CN208386261U CN 208386261 U CN208386261 U CN 208386261U CN 201821127089 U CN201821127089 U CN 201821127089U CN 208386261 U CN208386261 U CN 208386261U
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- Iron Core Of Rotating Electric Machines (AREA)
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Abstract
The utility model discloses a kind of permanent magnet direct driving motors, including motor stator and rotor, the stator includes the stator core of wire casing, armature winding in insertion stator core wire casing and the magnetic inductive block of stator core inner ring is set, the rotor includes rotor core, rotor with salient pole, arcuate permanent magnetic iron is provided on the inside of the rotor core, the arcuate permanent magnetic iron is arranged successively along rotor core, thermal vias corresponding with arcuate permanent magnetic iron is provided on the rotor with salient pole, air gap is equipped between the rotor with salient pole and magnetic inductive block, rotor weight is light, high reliablity, stator structure, so that the harmonic content and rotor loss of magneto air-gap field reduce, increase motor flux leakage coefficient and reactance, air-gap reluctance distribution, be conducive to improve the rotation speed of permanent magnet flux, be conducive to improve Rated motor output torque and power is close Degree, starting current is small, and heat-sinking capability is strong, is conducive to the eddy-current loss for reducing motor, to improve electric efficiency.
Description
Technical field
The utility model relates to a kind of motor more particularly to a kind of permanent magnet direct driving motors.
Background technique
According to design of electrical motor principle, in the case where rated power determines, rotary speed of rotator is higher, the volume of motor,
Weight and manufacturing cost are with regard to smaller.It is usually huge using volume in low speed occasions such as much wind-power electricity generations, electric car drivings
The mechanical devices such as big gear-box carry out variable speed drives, need it to take into account design requirement and the big torque of the slow-speed of revolution of high-speed motor
Between contradiction.And the use of a large amount of mechanical devices inevitably will bring noise, mechanical loss and need periodic maintenance etc.
Problem, and the complexity and volume and weight that structure will be obviously increased.
Direct driving motor is used directly for speed operation, eliminates the intermediate conversions device such as additional gear-box, significantly simple
Change system structure, reduces the volume and weight of whole system, meanwhile, reliability, efficiency and power density of system etc. will
It is effectively improved, therefore, direct driving motor is increasingly becoming the research hotspot of domestic and foreign scholars.But generally conventional direct driving motor
Big with volume, stator and rotor have much the features such as to pole, bring very big difficulty to motor manufacturing and installation, manufacture at
This is higher, and traditional permanent magnet synchronous direct-driven motor, rotor are overrided to form using silicon steel sheet, and structure is complicated, anti-vibrating and impact energy
Power is not strong, and reliability is not high；Stator is using opening slot structure, and in motor rotary course, magnetic field is changed greatly in air gap, air gap
Harmonic content in magnetic field improves, and core loss and rotor eddy current loss increase, while location torque and torque pulsation increase.Separately
On the one hand, using this trench structure, the magnetic leakage factor of motor can be reduced, and leakage reactance is caused to reduce, and inductance reduces, peak value short circuit electricity
Stream increases, and reduces the operating point of permanent magnet in a short-circuit situation, improves the risk of permanent magnet short circuit loss of excitation；Compared with stator,
The radiating condition of rotor is poor, and the raising of rotor eddy current loss, can improve the operating temperature of permanent magnet, so that permanent magnet is gone
Magnetic inflection point improves, and increases the risk that rail traffic direct driving motor loss of excitation is burnt.Especially under this operating condition of high temperature short circuit.
Utility model content
To solve the above problems, the utility model provides a kind of permanent magnet direct driving motor, rotor weight is light, high reliablity, fixed
Minor structure increases motor flux leakage coefficient and reactance so that the harmonic content of magneto air-gap field and rotor loss reduce,
Air-gap reluctance distribution is conducive to the rotation speed for improving permanent magnet flux, is conducive to improve Rated motor output torque and power is close
Degree, starting current is small, and heat-sinking capability is strong, is conducive to the eddy-current loss for reducing motor, to improve electric efficiency.
To achieve the above object, the utility model uses following technological means:
The utility model provides a kind of permanent magnet direct driving motor, including motor stator and rotor, and the stator includes line
Stator core, the armature winding in insertion stator core wire casing and the magnetic inductive block that stator core inner ring is set of slot, it is described
Rotor includes rotor core, rotor with salient pole, is provided with arcuate permanent magnetic iron on the inside of the rotor core, the arcuate permanent magnetic iron along
Rotor core is arranged successively, and thermal vias corresponding with arcuate permanent magnetic iron, the rotor with salient pole are provided on the rotor with salient pole
Air gap is equipped between magnetic inductive block.
Further, the stator core inner ring has been uniformly arranged along the circumference several grooves one, and the magnetic inductive block is arc-shaped
It is arranged, is provided with convex block one corresponding with groove one on the magnetic inductive block, encapsulating has epoxy between the convex block one and groove one
Resin is conducive to preferably fix magnetic inductive block, can effectively reduce the harmonic content of magneto air-gap field, reduces rotor
Loss increases motor flux leakage coefficient and reactance, reduces short circuit current, improves the operating point of permanent magnet, improves permanent-magnet synchronous direct drive
The reliability of motor.
Further, the rotor core inner ring has been uniformly arranged along the circumference several grooves two, the groove two and heat dissipation
Through-hole connection, the arcuate permanent magnetic iron are arranged in groove two through epoxy resin encapsulated, are conducive to preferably fix arc forever
Magnet, fixed, high reliablity are easy to process.
Further, the arcuate permanent magnetic iron is alternately arranged along rotor core circumferential direction N, S pole, makes the magnetic flux density in air gap
At class Sine distribution, be conducive to preferably improve motor working efficiency.
Further, the magnetic inductive block is covered with stator core inner surface, is conducive to preferably reduce magneto air gap magnetic
The harmonic content of field reduces rotor loss, increases motor flux leakage coefficient and reactance, reduces short circuit current, improves the work of permanent magnet
Make the reliability for a little improving permanent magnet synchronous direct-driven motor.
Further, the rotor core is magnetic conductive metal material, after being formed using machining or die sinking
Machining, anti-vibrating and impact ability is strong, high reliablity.
The utility model has the beneficial effects that
The utility model structure is simple, and rotor weight is light, high reliablity, stator structure, so that magneto air-gap field
Harmonic content and rotor loss reduce, increase motor flux leakage coefficient and reactance, air-gap reluctance distribution is conducive to improve permanent magnetism
The rotation speed of magnetic flux is conducive to improve Rated motor output torque and power density, and starting current is small, and heat-sinking capability is strong, has
Conducive to the eddy-current loss for reducing motor, to improve electric efficiency.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the rotor core structure schematic diagram of the utility model.
Specific embodiment
With reference to the accompanying drawing and specific embodiment is described further the utility model.
Embodiment 1: as shown in Figs. 1-2, the present embodiment provides a kind of permanent magnet direct driving motors, including motor stator and motor to turn
Son, the stator include the stator core 1 of wire casing, the armature winding 2 in insertion stator core wire casing and are arranged in stator iron
The magnetic inductive block 3 of in-core circle, the rotor include rotor core 4, rotor with salient pole 5, are provided with arc forever on the inside of the rotor core
Magnet 6, the arcuate permanent magnetic iron are arranged successively along rotor core, are provided on the rotor with salient pole corresponding with arcuate permanent magnetic iron
Thermal vias 7, air gap 8 is equipped between the rotor with salient pole and magnetic inductive block, the quantity of rotor with salient pole is greater than the pole of armature winding
Logarithm, air-gap reluctance distribution are conducive to the rotation speed for improving permanent magnet flux, are conducive to improve Rated motor output torque and function
Rate density.
Wherein, 1 inner ring of stator core has been uniformly arranged along the circumference several one 1-1 of groove, and the magnetic inductive block 3 is arc-shaped
It is arranged, is provided with convex block one 3-1 corresponding with one 1-1 of groove, encapsulating between the convex block one and groove one on the magnetic inductive block
There is epoxy resin, be conducive to preferably fix magnetic inductive block, the harmonic content of magneto air-gap field can be effectively reduced, drops
Low rotor loss, increases motor flux leakage coefficient and reactance, reduces short circuit current, improves the operating point of permanent magnet, and it is same to improve permanent magnetism
Walk the reliability of direct driving motor.
4 inner ring of rotor core has been uniformly arranged along the circumference several two 4-1 of groove, and two 4-1 of groove and heat dissipation are logical
Hole 7 is connected to, and the arcuate permanent magnetic iron 6 is arranged in groove two through epoxy resin encapsulated, is conducive to preferably fix arc forever
Magnet, fixed, high reliablity are easy to process.
The arcuate permanent magnetic iron 6 is alternately arranged along rotor core circumferential direction N, S pole, makes the magnetic flux density in air gap at class sine
Distribution, is conducive to preferably improve motor working efficiency.
The magnetic inductive block 3 is covered with stator core inner surface, is conducive to the harmonic wave for preferably reducing magneto air-gap field
Content reduces rotor loss, increases motor flux leakage coefficient and reactance, reduces short circuit current, improves the operating point of permanent magnet, improves
The reliability of permanent magnet synchronous direct-driven motor.
The rotor core 4 is magnetic conductive metal material, can be equal using machining after machining or die sinking molding
Can, anti-vibrating and impact ability is strong, high reliablity.
Claims (6)
1. a kind of permanent magnet direct driving motor, which is characterized in that including motor stator and rotor, the stator includes determining for wire casing
Sub- iron core, the armature winding in insertion stator core wire casing and the magnetic inductive block that stator core inner ring is set, the rotor packet
Rotor core, rotor with salient pole are included, is provided with arcuate permanent magnetic iron on the inside of the rotor core, the arcuate permanent magnetic iron is along rotor iron
Core is arranged successively, and thermal vias corresponding with arcuate permanent magnetic iron, the rotor with salient pole and magnetic conduction are provided on the rotor with salient pole
Air gap is equipped between block.
2. a kind of permanent magnet direct driving motor according to claim 1, which is characterized in that the stator core inner ring is circumferentially equal
Even to be provided with several grooves one, the magnetic inductive block arc-shaped setting is provided with convex block corresponding with groove one on the magnetic inductive block
One, encapsulating has epoxy resin between the convex block one and groove one.
3. a kind of permanent magnet direct driving motor according to claim 1, which is characterized in that the rotor core inner ring is circumferentially equal
Even to be provided with several grooves two, the groove two is connected to thermal vias, and the arcuate permanent magnetic iron setting passes through in groove two
Epoxy resin encapsulated.
4. a kind of permanent magnet direct driving motor according to claim 1, which is characterized in that the arcuate permanent magnetic iron is along rotor core
The circumferential pole N, S is alternately arranged.
5. a kind of permanent magnet direct driving motor according to claim 1, which is characterized in that the magnetic inductive block is covered in stator core
Surface.
6. a kind of permanent magnet direct driving motor according to claim 1, which is characterized in that the rotor core is magnetic conductive metal material
Material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821127089.8U CN208386261U (en) | 2018-07-16 | 2018-07-16 | A kind of permanent magnet direct driving motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821127089.8U CN208386261U (en) | 2018-07-16 | 2018-07-16 | A kind of permanent magnet direct driving motor |
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| Publication Number | Publication Date |
|---|---|
| CN208386261U true CN208386261U (en) | 2019-01-15 |
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ID=64964264
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821127089.8U Active CN208386261U (en) | 2018-07-16 | 2018-07-16 | A kind of permanent magnet direct driving motor |
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| Country | Link |
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| CN (1) | CN208386261U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112087108A (en) * | 2020-09-15 | 2020-12-15 | 华育昌(肇庆)智能科技研究有限公司 | Rare earth permanent magnet synchronous motor with absolute origin signal |
| TWI716322B (en) * | 2020-06-01 | 2021-01-11 | 國立成功大學 | Electric mechanical structure and stator core component thereof |
-
2018
- 2018-07-16 CN CN201821127089.8U patent/CN208386261U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI716322B (en) * | 2020-06-01 | 2021-01-11 | 國立成功大學 | Electric mechanical structure and stator core component thereof |
| CN112087108A (en) * | 2020-09-15 | 2020-12-15 | 华育昌(肇庆)智能科技研究有限公司 | Rare earth permanent magnet synchronous motor with absolute origin signal |
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