CN214176999U - Stator and rotor punching sheet magnetic circuit structure used in permanent magnet synchronous motor and motor - Google Patents
Stator and rotor punching sheet magnetic circuit structure used in permanent magnet synchronous motor and motor Download PDFInfo
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- CN214176999U CN214176999U CN202023032804.XU CN202023032804U CN214176999U CN 214176999 U CN214176999 U CN 214176999U CN 202023032804 U CN202023032804 U CN 202023032804U CN 214176999 U CN214176999 U CN 214176999U
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- stator
- permanent magnet
- magnet synchronous
- synchronous motor
- rotor punching
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Abstract
The utility model relates to a stator and rotor punching magnetic circuit structure and motor for permanent magnet synchronous motor is inside, including permanent magnet synchronous motor stator punching, permanent magnet synchronous motor stator is equipped with a plurality of stator slots on the punching, permanent magnet synchronous motor stator punching is hollow structure, and its inside permanent magnet synchronous motor rotor punching that still is equipped with, permanent magnet synchronous motor rotor punching is multipolar embedded magnet steel structure, and every utmost point is equipped with the polylith magnet steel, still is equipped with between at different levels and is used for inside ventilation cooling's fluting. Compared with the prior art, the utility model has the advantages of no-load tooth's socket torque is little, the motor is undulant little, the back emf harmonic is little when the operation.
Description
Technical Field
The utility model relates to a PMSM inner structure especially relates to a stator and rotor punching magnetic circuit structure who is used for PMSM inside.
Background
In the rubber tire industry, a driving motor for an internal mixer is turning from a three-phase asynchronous motor to a permanent magnet motor, and a 2500Kw high-voltage permanent magnet motor is newly developed by companies in order to adapt to the industry development and expand the product range.
The existing similar products in the market are analyzed, the torque fluctuation is 20%, and when the method is applied to an internal mixer, the produced rubber plate has larger thickness fluctuation. Meanwhile, the noise and vibration of the motor are large during operation.
The high-voltage permanent magnet synchronous motor with low torque fluctuation characteristic is developed and applied to rubber tire mixing equipment, the thickness fluctuation of a rubber plate can be reduced, the quality of produced tires is improved, the noise and vibration during the operation of the equipment are reduced, and the workshop production environment is improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a stator and rotor punching magnetic circuit structure for permanent magnet synchronous motor is inside in order to overcome the defect that above-mentioned prior art exists.
The purpose of the utility model can be realized through the following technical scheme:
the utility model provides a stator and rotor punching magnetic circuit structure for permanent magnet synchronous motor is inside, includes permanent magnet synchronous motor stator punching, be equipped with a plurality of stator slots on the permanent magnet synchronous motor stator punching, permanent magnet synchronous motor stator punching is hollow structure, and its inside still is equipped with permanent magnet synchronous motor rotor punching, permanent magnet synchronous motor rotor punching is multipolar embedded magnet steel structure, and every utmost point is equipped with polylith magnet steel, still is equipped with between each utmost point to be used for inside ventilation cooling's fluting.
Furthermore, the number of the stator slots is at least 72.
Furthermore, the groove type of the stator groove is a square open groove.
Further, the outer diameter of the stator punching sheet of the permanent magnet synchronous motor is 1120 mm.
Furthermore, the number of poles of the multi-pole embedded magnetic steel structure is 6.
Furthermore, each pole of the multi-pole embedded magnetic steel structure is provided with 4 pieces of magnetic steel.
Further, the inner diameter of the stator punching sheet of the permanent magnet synchronous motor is 800 mm.
Furthermore, the magnetic steel is arranged on each pole of the multi-pole embedded magnetic steel structure in a mode that two groups of magnets are symmetrical to form an included angle.
Further, the included angle is 160 degrees.
Further, each clearance distance between the magnet steel is 3mm, and the interval of fluting is 3 mm.
The utility model also provides a motor, its inside adoption be used for inside stator and the rotor punching magnetic circuit structure of PMSM.
Compared with the prior art, the utility model has the advantages of it is following:
(1) the torque of the no-load tooth socket is small and is 1 per mill of rated torque.
(2) The counter potential harmonic wave is small, and the waveform is close to an ideal sine wave.
(3) The motor has small torque fluctuation when in operation, the torque fluctuation is 1.2 percent when in rated torque, and the quality of products produced by equipment can be improved. If the rubber plate thickness fluctuation is obviously reduced when the rubber plate thickness fluctuation is applied to an internal mixer, and the noise and vibration are reduced when equipment runs, so that the workshop production environment is improved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the structure size of the local groove type of the middle stator punching sheet of the present invention;
FIG. 3 is a schematic diagram of the size of the local groove structure of the rotor according to the present invention;
in the figure, 1 is a stator punching sheet, and 2 is a rotor punching sheet.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
As shown in FIG. 1, an overall structure diagram of a magnetic circuit of a stator and a rotor punching of a permanent magnet synchronous motor with a center height of 630mm and a pole number of 6 poles is provided. The stator punching sheet is 1, and the rotor punching sheet is 2. The number of stator slots is 72 slots, the number of rotor is 6 poles, each pole is divided into 4 slots, and the number of slots is 24.
As shown in fig. 2, a schematic size diagram of a local 1-slot structure of a stator lamination is shown. The stator has an outer diameter of 1120mm and an inner diameter of 800 mm. The stator slot is square open slot, and is wide 17.5mm, and the depth is 75 mm. The notch can be used for placing a slot wedge, and the specific structure is shown in figure 2.
As shown in fig. 3, the structural size of a local 1-pole type of the rotor sheet is schematically illustrated. The maximum outer dimension of the rotor is 792mm, and the outer shape of the rotor is an eccentric arc with the outer radius of 264.2 mm. The number of magnetic steel grooves of each pole is 4, the size is 77mm multiplied by 35mm, the middle included angle is 160 degrees, the rib width is 3mm, and the magnetic isolation bridge width is 3 mm. And slots are formed between the magnetic poles, so that ventilation and heat dissipation in the motor are facilitated, and the running temperature of the motor is reduced. The inner diameter of the rotor sheet is 450 mm.
The utility model discloses an at first replace old and old asynchronous machine with PMSM, the magnet steel has used the abundant sintered neodymium iron boron magnetic steel of china's tombarthite resource reserves, is to the extension of the peculiar tombarthite resource industry of chinese, make full use of resource, the national conditions of standing, the advantage of developing is kept away.
The utility model discloses utilize PMSM to replace asynchronous machine, at first motor peak value moment of torsion and peak power can improve by a wide margin, and the application that can be fine needs to use on the equipment that the heavy load starts. And secondly, the motor efficiency is improved by 1 to 2 points, the electric energy consumption is reduced, the electric charge of equipment can not be reduced, and more importantly, less electricity brings about the reduction of CO2 greenhouse gas emission.
The utility model has the advantages of simple manufacture, the rotor magnet steel is fixed firm reliable, rotor intensity reasonable in design, and motor tooth's socket torque is low, and the torque is undulant little during the operation, and vibration noise low grade.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a stator and rotor punching magnetic circuit structure for permanent magnet synchronous motor is inside, its characterized in that, includes permanent magnet synchronous motor stator punching, be equipped with a plurality of stator slots on the permanent magnet synchronous motor stator punching, permanent magnet synchronous motor stator punching is hollow structure, and its inside permanent magnet synchronous motor rotor punching that still is equipped with, permanent magnet synchronous motor rotor punching is multipolar embedded magnet steel structure, and every utmost point is equipped with polylith magnet steel, still is equipped with between each utmost point to be used for inside ventilation cooling's fluting.
2. The magnetic circuit structure of the stator and the rotor punching sheet in the permanent magnet synchronous motor as claimed in claim 1, wherein the number of the stator slots is at least 72 slots.
3. The magnetic circuit structure of the stator and the rotor punching sheet used in the permanent magnet synchronous motor as claimed in claim 1, wherein the slot shape of the stator slot is a square open slot.
4. The magnetic circuit structure of the stator and the rotor punching sheet in the permanent magnet synchronous motor according to claim 1, wherein the outer diameter of the stator punching sheet of the permanent magnet synchronous motor is 1120 mm.
5. The magnetic circuit structure of the stator and the rotor punching sheet used in the permanent magnet synchronous motor as claimed in claim 1, wherein the number of poles of the multi-pole embedded magnetic steel structure is 6.
6. The magnetic circuit structure of the stator and the rotor punching sheet used in the permanent magnet synchronous motor as claimed in claim 1, wherein each pole of the multi-pole embedded magnetic steel structure is provided with 4 pieces of magnetic steel.
7. The magnetic circuit structure of the stator and the rotor punching sheet in the permanent magnet synchronous motor according to claim 1, wherein the inner diameter of the stator punching sheet of the permanent magnet synchronous motor is 800 mm.
8. The structure of claim 1, wherein the magnetic steel is disposed on each pole of the multi-pole embedded magnetic steel structure in a manner that two groups of magnets are symmetrically arranged to form an included angle.
9. The magnetic circuit structure of stator and rotor punching sheet in permanent magnet synchronous motor according to claim 8, wherein said included angle is 160 °, the gap distance between each of said magnetic steels is 3mm, and the distance between said slots is 3 mm.
10. An electric machine characterized in that the magnetic structure of the stator and rotor punching sheet used in the interior of the permanent magnet synchronous machine according to any one of claims 1 to 9 is adopted in the electric machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023032804.XU CN214176999U (en) | 2020-12-16 | 2020-12-16 | Stator and rotor punching sheet magnetic circuit structure used in permanent magnet synchronous motor and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023032804.XU CN214176999U (en) | 2020-12-16 | 2020-12-16 | Stator and rotor punching sheet magnetic circuit structure used in permanent magnet synchronous motor and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214176999U true CN214176999U (en) | 2021-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023032804.XU Active CN214176999U (en) | 2020-12-16 | 2020-12-16 | Stator and rotor punching sheet magnetic circuit structure used in permanent magnet synchronous motor and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214176999U (en) |
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2020
- 2020-12-16 CN CN202023032804.XU patent/CN214176999U/en active Active
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