CN221328750U - Self-fan air-cooled permanent magnet synchronous variable-pitch motor - Google Patents
Self-fan air-cooled permanent magnet synchronous variable-pitch motor Download PDFInfo
- Publication number
- CN221328750U CN221328750U CN202323492910.XU CN202323492910U CN221328750U CN 221328750 U CN221328750 U CN 221328750U CN 202323492910 U CN202323492910 U CN 202323492910U CN 221328750 U CN221328750 U CN 221328750U
- Authority
- CN
- China
- Prior art keywords
- motor
- magnetic
- rotor
- fan
- permanent magnet
- 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.)
- Active
Links
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 20
- 238000004080 punching Methods 0.000 claims abstract description 14
- 230000005389 magnetism Effects 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Motor Or Generator Cooling System (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model discloses a self-fan air-cooled permanent magnet synchronous variable-pitch motor, which comprises a casing, a fan and a motor for driving the fan to run, wherein the motor comprises a motor rotor, the outer edge of a rotor punching sheet of the motor rotor consists of a plurality of symmetrically distributed eccentric circular arcs, each eccentric circular arc comprises a group of magnetic grooves and buckling points, and the thickness of a magnetic bridge formed by the magnetic grooves and the outer circle of the rotor punching sheet is 1mm. According to the utility model, through the magnetic circuit structure formed by the magnetic grooves and the magnetic bridges, the temperature rise of the motor is reduced, and the cooling effect of the variable-pitch motor under the rated working condition is improved.
Description
Technical Field
The utility model belongs to the technical field of permanent magnet synchronous motors, and particularly relates to a self-fan air-cooled permanent magnet synchronous variable pitch motor.
Background
With the widespread attention of renewable energy sources, wind power generation technology has been rapidly developed as a clean energy source solution. The performance and efficiency of a pitch motor, which is one of the core components in a wind power generation system, directly affects the energy conversion efficiency of the overall system. The permanent magnet synchronous motor has the advantages of high efficiency, high power density, small volume and the like, is widely applied to a wind power generation system, generates a strong magnetic field through a permanent magnet, eliminates excitation loss in the traditional induction motor, and improves the overall efficiency. Wind power plants are usually in a severe environment, and high temperature is easy to generate when a motor runs for a long time. Therefore, the adoption of an air cooling system for heat dissipation of a motor is a common and effective means. The self-fan air cooling system directly installs the fan on the motor, and utilizes wind power to cool the motor, thereby improving the stability and the service life of the system. The air cooling system of the current variable-pitch motor needs lower temperature rise of stable operation of the motor, is limited by the inner space of the variable-pitch motor, and brings great challenges to the design of the motor.
Disclosure of utility model
In order to solve the defects in the prior art, the utility model aims to provide a self-fan air-cooled permanent magnet synchronous variable-pitch motor, which reduces temperature rise and improves cooling effect.
In order to achieve the above object, the present utility model adopts the following technical scheme:
The utility model provides a from fan forced air cooling's synchronous variable pitch motor of permanent magnetism, includes casing, fan and drive fan moving motor, the motor includes motor rotor, motor rotor's rotor towards the outside of piece and constitute by a plurality of symmetrical distribution's eccentric circular arc, including a set of magnetic groove and knot point in every eccentric circular arc, the magnetic groove with the magnetic bridge thickness that rotor towards the excircle formation is 1mm.
The technical scheme is further defined that the magnetic grooves and the buckling points are 8 groups and are symmetrically distributed, and the adjacent included angles of the magnetic grooves are 45 degrees.
Further, a riveting hole is formed right below the magnetic groove 7, and the diameter of the riveting hole is 3mm.
Further, a convex key 2 matched with the rotor rotating shaft 6 is arranged at the inner diameter of the rotor punching sheet 10.
The beneficial effects are that: compared with the existing permanent magnet synchronous variable-pitch motor, the self-fan air-cooled permanent magnet synchronous motor provided by the utility model has the advantages that the magnetic circuit structure formed by the magnetic grooves and the magnetic bridges reduces the temperature rise of the motor and improves the cooling effect of the variable-pitch motor under the rated working condition; the iron loss of the motor is reduced through the outer circle design of the rotor punching sheet, and the air gap sinusoidal is improved; the utility model provides a more sustainable and efficient solution for the wind power generation industry, further reduces the maintenance cost, prolongs the service life of the motor, improves the reliability and performance of the whole system, and has strong practicability and wide applicability.
Drawings
FIG. 1 is a schematic structural diagram of a permanent magnet synchronous variable pitch motor provided by the utility model;
fig. 2 is a component diagram of a motor rotor of the permanent magnet synchronous variable pitch motor provided by the utility model;
fig. 3 is an isometric view of a motor rotor of the permanent magnet synchronous variable pitch motor provided by the utility model;
fig. 4 is a schematic structural diagram of a rotor sheet of the permanent magnet synchronous variable pitch motor provided by the utility model.
The meaning of the symbols in the drawings is as follows:
1. The motor comprises a shell, 2, a motor stator, 3, a motor rotor, 4, a fan housing, 5, a fan, 6, a rotor rotating shaft, 7, a magnetic groove, 8, a convex key, 9, a buckling point, 10 and a rotor punching sheet.
Detailed Description
The utility model is described in detail below with reference to the drawings and the specific embodiments.
The implementation provides a self-fan air-cooled permanent magnet synchronous variable-pitch motor, the structural schematic diagram of which is shown in figures 1-4, and the specific structure is as follows.
The permanent magnet synchronous variable pitch motor comprises a shell 1, a fan 5, a motor stator 2 and a motor rotor 3. The motor stator 2 is arranged on the shell 1 through a hot sleeve, the motor rotor 3 comprises a rotor rotating shaft 6 and a rotor punching sheet 10 which are matched with each other, the rotor rotating shaft 6 is connected with the shell 1 through a bearing, and the shell 1 is also connected with the fan housing 4 through a screw. The rotor rotating shaft 6 is in interference fit with the fan 5, and the fan 5 is driven by the rotation of the motor rotor 3 to cool the surface of the shell. In this embodiment, the fan 5 is a centrifugal fan, and is fixedly connected to the rotor shaft through a screw, and adopts a precise bearing and seal design, air enters the fan area through the fan housing, and flows out of the ventilation duct along with the movement of the fan 5, so as to achieve the purpose of cooling the housing.
The inner diameter of the rotor punching sheet 10 is provided with the convex key 2 matched with the rotor rotating shaft 6, the outer edge of the rotor punching sheet 10 is composed of 8 symmetrically distributed eccentric arcs, the air gap magnetic density waveform sine degree is higher by the design, the eccentric arcs are related to the center distance of the inner hole of the motor rotor 3 and the motor air gap length, the shape of the eccentric arcs is optimized, the center distance of the eccentric arcs and the motor air gap length are ensured to be matched, and the air gap magnetic density waveform sine degree is improved. Each eccentric arc comprises a group of magnetic grooves 7 and buckling points 9, so that the magnetic grooves 7 and the buckling points 9 are 8 groups and are symmetrically distributed. The magnetic grooves 7 are steel magnetic grooves, and the adjacent included angles of the 8 magnetic grooves 7 are 45 degrees, so that the uniformity of magnetic field distribution is improved. The thickness of a magnetic bridge formed by the magnetic groove 7 and the outer circle of the rotor punching sheet 10 is 1mm, so that the degree of sinusoidal of the magnetic density waveform can be improved, and enough structural strength can be maintained.
The rotor punching sheet forms a rotor through lamination, and the permanent magnet is inserted in the magnetic steel groove. The permanent magnetic field generated by the rotor and the stator magnetic field are interlinked to output power, so in order to prevent the generation of the tilted sheet after lamination of the rotor punching sheet 10, a riveting hole is respectively arranged right below the corresponding magnetic groove 7, and the diameter of the riveting hole is 3mm. The magnetic steel groove, the magnetic bridge and the riveting hole are all magnetic structures belonging to punching sheets, and the motor output performance can be more excellent through the design of the parts.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be appreciated by persons skilled in the art that the above embodiments are not intended to limit the utility model in any way, and that all technical solutions obtained by means of equivalent substitutions or equivalent transformations fall within the scope of the utility model.
Claims (4)
1. The utility model provides a from fan-cooled synchronous variable pitch motor of permanent magnetism, includes casing (1), fan (5) and drive fan (5) moving motor, the motor includes motor rotor (3), its characterized in that, the outside of rotor punching (10) of motor rotor (3) comprises a plurality of symmetric distribution's eccentric circular arc, includes a set of magnetic groove (7) and knot point (9) in every eccentric circular arc, magnetic groove (7) with the magnetic bridge thickness that rotor punching (10) excircle formed is 1mm.
2. A self-fan air-cooled permanent magnet synchronous variable pitch motor according to claim 1, wherein the number of the magnetic grooves (7) and the buckling points (9) is 8, the magnetic grooves are symmetrically distributed, and the adjacent included angles of the magnetic grooves (7) are 45 degrees.
3. The self-fanning air-cooled permanent magnet synchronous variable-pitch motor according to claim 1, wherein a riveting hole is arranged right below the magnetic groove (7), and the diameter of the riveting hole is 3mm.
4. A self-fanning air-cooled permanent magnet synchronous variable pitch motor according to claim 1, wherein the inside diameter of the rotor sheet (10) is provided with a protruding key (2) which is matched with the rotor shaft (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323492910.XU CN221328750U (en) | 2023-12-21 | 2023-12-21 | Self-fan air-cooled permanent magnet synchronous variable-pitch motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323492910.XU CN221328750U (en) | 2023-12-21 | 2023-12-21 | Self-fan air-cooled permanent magnet synchronous variable-pitch motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221328750U true CN221328750U (en) | 2024-07-12 |
Family
ID=91784757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323492910.XU Active CN221328750U (en) | 2023-12-21 | 2023-12-21 | Self-fan air-cooled permanent magnet synchronous variable-pitch motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221328750U (en) |
-
2023
- 2023-12-21 CN CN202323492910.XU patent/CN221328750U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202260856U (en) | Radiating device of permanent magnet motor rotor | |
| CN111181259A (en) | Linear rotation permanent magnet motor with E-shaped stator structure | |
| CN101557150A (en) | Permanent magnet synchronous direct-drive wind power generator without iron core | |
| CN201584875U (en) | Megawatt high-voltage permanent magnet synchronous wind power generator | |
| CN201360183Y (en) | Closed air cooling permanent magnet generator | |
| CN221328750U (en) | Self-fan air-cooled permanent magnet synchronous variable-pitch motor | |
| CN110380575B (en) | Self-excited synchronous generator with radial-flow type heat-dissipation wind wheel | |
| CN112383191A (en) | Self-fan cold axial flux motor with external centrifugal fan | |
| CN101060258A (en) | A transverse flux permanent magnet wind generator | |
| CN110748458A (en) | Road magnetic suspension wind driven generator and power generation device | |
| CN101741177A (en) | Cooling mechanism of power generator | |
| CN212033853U (en) | Self-starting permanent magnet synchronous motor | |
| CN209982270U (en) | Self-excited synchronous generator with radial-flow type heat-dissipation wind wheel | |
| CN204517647U (en) | A kind of low-loss stator core construction, containing its stator and motor | |
| CN204349706U (en) | A kind of 6kW generator | |
| CN102122870A (en) | 5 MW direct-driven permanent magnet wind generator with dual rotors, dual stators and dual air gaps | |
| CN215817867U (en) | Three-phase self-starting permanent magnet synchronous motor | |
| CN111181338A (en) | High-voltage permanent magnet intelligent driving system for water conservancy vertical shaft | |
| CN104539089A (en) | Plug-in mounting type quick radiating electricity generator | |
| CN216851485U (en) | Sectional type rotor structure of permanent magnet motor | |
| CN221202239U (en) | Magnetic pole, motor and water turbine | |
| CN217642891U (en) | Stator and rotor iron core of punching sheet | |
| CN204349751U (en) | Permanent-magnet synchronous submersible motor | |
| CN215817689U (en) | Permanent magnet rotor assembly | |
| CN102904402B (en) | A kind of wind-driven generator of multimode output |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |