CN203691194U - Nonuniform air gap high-efficiency permanent-magnet synchronous motor - Google Patents
Nonuniform air gap high-efficiency permanent-magnet synchronous motor Download PDFInfo
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- CN203691194U CN203691194U CN201320861119.9U CN201320861119U CN203691194U CN 203691194 U CN203691194 U CN 203691194U CN 201320861119 U CN201320861119 U CN 201320861119U CN 203691194 U CN203691194 U CN 203691194U
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- stator
- air gap
- rotor
- synchronous motor
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 4
- 238000004080 punching Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- 238000003825 pressing Methods 0.000 abstract description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000019771 cognition Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model discloses a nonuniform air gap high-efficiency permanent-magnet synchronous motor, comprising a rotor and a stator; wherein the stator consists of a stator coil and a stator core, the rotor consists of a shaft, rotor pressing plates, a cylindrical rotor core and 2n pairs of magnetic steel, n is a positive integer; the each pair of magnetic steel piece into a V shape and are inlaid in magnetic steel grooves of the rotor core, an opening faces to an air gap, the adjacent two pairs of magnetic steel have opposite polarities, the air gap between the rotor core and the stator core is distributed in a nonuniform thickness way; a pole arc radius corresponding to the each pair of magnetic steel is made to be less than an inner circle radius of the stator, and the circle centers of the two arcs are not superposed, so that the air gap at the center of the pole arc is the smallest, the air gap increases gradually along the direction of two sides of a center line of the pole arc, an arc circle center between the adjacent pole arcs and an inner circle center of the stator are superposed. The nonuniform air gap high-efficiency permanent-magnet synchronous motor of the utility model has the beneficial effects that: by changing the shape of an outer rim of a rotor punching sheet of a motor, the waveform of an air gap magnetic field is improved, so that a magnetic field formed by a permanent magnet in the air gap approximates a sine wave. As the magnetic field formed by the permanent magnet in the air gap approximates the sine wave, various harmonic magnetic fields are greatly weakened, electromagnetic noise of the motor is reduced, iron loss caused by the harmonic magnetic fields is reduced, temperature rise of the motor is reduced, and high performance of the motor is ensured.
Description
Technical field
The utility model relates to synchronous motor, and more specifically, it relates to a kind of efficient permanent magnet synchronous motor of non-uniform gap.
Background technology
In the prior art, adjustable speed permanent magnet synchronous motor, efficiency is high, power factor height has obtained the cognition of most people, but because adjustable speed permanent magnet synchronous motor is used in air compressor machine industry mostly, rotating speed is high, and volume is little, therefore the noise of motor and temperature rise are all higher, and these are all that motor user is difficult to accept.
Summary of the invention
The purpose of this utility model is to overcome deficiency of the prior art, and the efficient permanent magnet synchronous motor of a kind of high efficiency, high-performance, temperature rise is low, noise is low non-uniform gap is provided.
The efficient permanent magnet synchronous motor of this non-uniform gap, comprises rotor and stator, and stator is made up of stator coil and stator core, and described rotor is made up of magnet steel axle, rotor press plate, columniform rotor core and 2n, and n is positive integer; Every pair of magnet steel is combined into " V " font and forms in a pair of magnet steel groove that is embedded in rotor core, and opening is towards air gap, and two pairs of adjacent magnet steel polarity are contrary, and the air gap between rotor core and stator core adopts distribution in uneven thickness.The polar arc radius that described every pair of magnet steel is corresponding is made the interior radius of circle that is less than stator, and the center of circle of two circular arcs does not overlap, thereby form polar arc center air gap minimum, increase gradually along polar arc center line two side direction air gaps, the circular arc center of circle between adjacent polar arc and the stator inner circle center of circle overlap.
As preferably: the air gap maximum ga(u)ge between described stator core and rotor core is 2.5 times of minimum thickness.
As preferably: described stator coil adopt double-layer overlapped winding configuration roll off the production line with stator core in.
As preferably: described magnet steel groove depth is than the large 0.2-0.3mm of magnet thickness.
The beneficial effects of the utility model are: by changing the shape of motor rotor punching sheet outer rim, improve the waveform of air-gap field, make the magnetic field that permanent magnet forms in air gap be approximately sinusoidal wave, by detecting this structure, the magnetic field forming in air gap due to permanent magnet approaches sine wave, has greatly weakened various harmonic fields, reduce the electromagnetic noise of motor, reduce the iron loss being caused by harmonic field, reduced the temperature rise of motor, ensured the high-performance of motor.
Brief description of the drawings
Fig. 1 is prior art radial rotor structure stator and rotor profiles;
Fig. 2 is the utility model stator and rotor profiles;
Reference numeral: stator coil 1, stator core 2, maximum air gap 3; Minimal air gap 4; Rotor core 5, magnet steel groove 5-1, magnet steel 6, axle 7.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described further.Although the utility model is described in connection with preferred embodiment, should know, do not represent that the utility model is limited in described embodiment.On the contrary, the utility model is by alternative, modified model and the equivalent contained in the scope of the present utility model that can be included in attached claims restriction.
Shown in Figure 2.8 utmost point 37KW adjustable speed permanent magnet synchronous motors of the present embodiment adopt Y2-180 seat No., comprise rotor and stator, and stator is made up of stator coil 1 and stator core 2, and stator grooved adopts Y2 series 180 seat No. stator punchings to laminate rear formation stator core 2; Stator coil 1 adopt double-layer overlapped winding configuration roll off the production line with stator core 2 in.Described rotor is made up of the permanent magnet 6 of axle 7, rotor press plate (referring to the pressing plate at rotor core end face two), 5 and 16 8 pairs of cuboids of rotor core; Permanent magnet 6 every pair be combined into " V " font and form and one be extremely evenly embedded in the magnet steel groove 5-1 of rotor core 5, opening is towards air gap, adjacent does not have two pairs of permanent magnet 6 polarity contrary.
Described rotor core 5 has the silicon steel plate stacking of some sheet gauge fixed structures and size to form, the large 0.2-0.3mm of magnet steel groove 5-1 depth ratio magnet steel 6 thickness.This synchronous motor has high efficiency, high-performance, low noise, advantage cheaply.
Claims (4)
1. the efficient permanent magnet synchronous motor of a non-uniform gap, comprise rotor and stator, stator is made up of stator coil (1) and stator core (2), it is characterized in that: described rotor is made up of magnet steel (6) axle (7), rotor press plate, columniform rotor core (5) and 2n, and n is positive integer; Every pair of magnet steel (6) is combined into " V " font and forms in a pair of magnet steel groove (5-1) that is embedded in rotor core (5), opening is towards air gap, adjacent two pairs of magnet steel (6) polarity is contrary, and the air gap between rotor core and stator core adopts distribution in uneven thickness; The polar arc radius that described every pair of magnet steel (6) is corresponding is made the interior radius of circle that is less than stator, and the center of circle of two circular arcs does not overlap, thereby form polar arc center air gap minimum, increase gradually along polar arc center line two side direction air gaps, the circular arc center of circle between adjacent polar arc and the stator inner circle center of circle overlap.
2. the efficient permanent magnet synchronous motor of non-uniform gap according to claim 1, is characterized in that: the air gap maximum ga(u)ge (3) between described stator core (2) and rotor core (5) is 2.5 times of minimum thickness (4).
3. the efficient permanent magnet synchronous motor of non-uniform gap according to claim 1, is characterized in that: described stator coil (1) adopts double-layer overlapped winding configuration to roll off the production line in stator core (2).
4. the efficient permanent magnet synchronous motor of non-uniform gap according to claim 1, is characterized in that: the large 0.2-0.3mm of described magnet steel groove (5-1) depth ratio magnet steel (6) thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320861119.9U CN203691194U (en) | 2013-12-24 | 2013-12-24 | Nonuniform air gap high-efficiency permanent-magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320861119.9U CN203691194U (en) | 2013-12-24 | 2013-12-24 | Nonuniform air gap high-efficiency permanent-magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203691194U true CN203691194U (en) | 2014-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320861119.9U Expired - Lifetime CN203691194U (en) | 2013-12-24 | 2013-12-24 | Nonuniform air gap high-efficiency permanent-magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203691194U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105186816A (en) * | 2015-07-16 | 2015-12-23 | 博格思众（常州）电机电器有限公司 | Stator and rotor combined structure |
| CN108718145A (en) * | 2018-08-30 | 2018-10-30 | 沈阳工业大学 | A kind of permasyn morot weakening interior permanent magnet machines cogging torque |
-
2013
- 2013-12-24 CN CN201320861119.9U patent/CN203691194U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105186816A (en) * | 2015-07-16 | 2015-12-23 | 博格思众（常州）电机电器有限公司 | Stator and rotor combined structure |
| US10320274B2 (en) | 2015-07-16 | 2019-06-11 | Bergstrom, Inc. | Combination structure between stator and rotor in a brushless motor |
| CN108718145A (en) * | 2018-08-30 | 2018-10-30 | 沈阳工业大学 | A kind of permasyn morot weakening interior permanent magnet machines cogging torque |
| CN108718145B (en) * | 2018-08-30 | 2024-03-19 | 沈阳工业大学 | Permanent magnet synchronous motor for weakening cogging torque of built-in permanent magnet motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140702 |
|
| CX01 | Expiry of patent term |