CN214045385U - Multi-section split type double-linear permanent magnet synchronous motor structure - Google Patents
Multi-section split type double-linear permanent magnet synchronous motor structure Download PDFInfo
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- CN214045385U CN214045385U CN202023095144.XU CN202023095144U CN214045385U CN 214045385 U CN214045385 U CN 214045385U CN 202023095144 U CN202023095144 U CN 202023095144U CN 214045385 U CN214045385 U CN 214045385U
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Abstract
The multi-section split double-linear permanent magnet synchronous motor structure comprises a stator and a rotor which are nested, and an annular air gap is formed between the stator and the rotor; a plurality of groups of permanent magnet groove groups are uniformly embedded in the rotor along the circumferential direction, each permanent magnet groove group comprises a first permanent magnet groove, a second permanent magnet groove and a third permanent magnet groove, and the first permanent magnet groove, the second permanent magnet groove and the third permanent magnet groove are all in a straight shape; the first permanent magnet groove and the second permanent magnet groove are arranged in a line at a certain interval to form a lower permanent magnet group, and the lower permanent magnet group and the third permanent magnet groove are sequentially arranged from inside to outside along the radial direction of the rotor; a first permanent magnet is arranged in the first permanent magnet groove, a second permanent magnet is arranged in the second permanent magnet groove, and a third permanent magnet is arranged in the third permanent magnet groove; a magnetic bridge is arranged between the first permanent magnet and the second permanent magnet, and magnetic isolation grooves are arranged at two ends of the permanent magnet groove group. The utility model discloses can effectively control the motor temperature rise under the operating condition, also have certain promotion in the aspect of efficiency, electromagnetic noise when reducing the motor high frequency.
Description
Technical Field
The utility model relates to the technical field of electric machines, especially, relate to two style of calligraphy PMSM structures of multistage branch formula.
Background
The permanent magnet synchronous motor is a high-efficiency and high-precision product, represents the future development trend of the motor industry, and has good application prospect. The embedded permanent magnet motor is widely applied to the industry of hybrid vehicles due to the good performance of high power density and weak magnetic speed regulation capability. The processing of the permanent magnet of the traditional embedded permanent magnet brushless motor is generally in a single-layer linear shape or a V-shaped shape, but an air gap magnetic field is caused, the magnetic field harmonic wave is increased, the robustness is not strong, the loss is increased, and the performance of the motor is reduced. The existing motor structure is difficult to meet the requirements of new energy automobiles and hybrid vehicles.
Disclosure of Invention
In order to overcome the problems, the utility model provides a two style of calligraphy PMSM structures of multistage branch formula.
The utility model adopts the technical proposal that: the multi-section split double-linear permanent magnet synchronous motor structure comprises a stator and a rotor which are nested, and an annular air gap is formed between the stator and the rotor; a plurality of groups of permanent magnet groove groups are uniformly embedded in the rotor along the circumferential direction, each permanent magnet groove group comprises a first permanent magnet groove, a second permanent magnet groove and a third permanent magnet groove, and the first permanent magnet groove, the second permanent magnet groove and the third permanent magnet groove are all in a straight shape; the first permanent magnet groove and the second permanent magnet groove are arranged in a line at a certain interval to form a lower permanent magnet group, and the lower permanent magnet group and the third permanent magnet groove are sequentially arranged from inside to outside along the radial direction of the rotor; a first permanent magnet is arranged in the first permanent magnet groove, a second permanent magnet is arranged in the second permanent magnet groove, and a third permanent magnet is arranged in the third permanent magnet groove; a magnetic bridge is arranged between the first permanent magnet and the second permanent magnet, and magnetic isolation grooves are arranged at two ends of the permanent magnet groove group.
Further, the stator comprises stator teeth, a stator yoke and an armature winding, and the armature winding is wound on the stator teeth by adopting a three-phase armature winding.
The utility model has the advantages that: the air gap magnetic field tends to be stable, the sine of the motor is better, the magnetic field harmonic wave is improved, the higher harmonic wave is almost zero and only the fundamental wave exists, the harmonic wave loss of the motor can be greatly reduced, and the cost is reduced; the motor temperature rise under the working state can be effectively controlled, and the efficiency is improved to a certain extent; the electromagnetic noise and the torque ripple of the motor at high frequency are reduced, and the motor has great market prospect.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a full sectional view of the present invention.
FIG. 3 is a graph showing the variation of the output torque of the motor with three structures along with the current control angle.
Description of reference numerals: 1. a stator; 2. a stator yoke; 2-1, armature winding; 3. stator teeth; 4. a rotating shaft; 5-1, a first permanent magnet; 5-2, a second permanent magnet; 5-3, a third permanent magnet; 6. an air gap.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all 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 work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., appear based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to the attached drawings, the multi-section split double-linear permanent magnet synchronous motor structure comprises a stator 1 and a rotor 5 which are nested, and an annular air gap 6 is formed between the stator 1 and the rotor 5; stator 1 includes stator tooth 3, stator yoke portion 2 and armature winding 2-1, and armature winding 2-1 adopts three-phase armature winding to twine on stator tooth 3, and electromagnetic winding designs through double-deck winding list pile winding mode, prevents the magnetic leakage phenomenon with the mode of adding the magnetic bridge at the motor tip. The permanent magnet of the motor is made of neodymium iron boron materials with higher magnetic performance, the efficiency and the stability of the permanent magnet motor can be guaranteed, and the rotor iron core is formed by punching and stacking silicon steel sheets.
The rotor 5 comprises a rotor iron core, a first permanent magnet 5-1, a second permanent magnet 5-2 and a third permanent magnet 5-3; the rotor 5 has a shaft 4 made of cast steel, which has the function of fixing the rotor 5, and three permanent magnets are embedded inside the rotor 5 by punching. The rotor 5 is made of silicon steel sheets DW470, and the permanent magnet consists of a plurality of same permanent magnets.
Eight groups of permanent magnet groove groups are uniformly embedded in the rotor 5 along the circumferential direction, each permanent magnet groove group comprises a first permanent magnet groove, a second permanent magnet groove and a third permanent magnet groove, and the first permanent magnet groove, the second permanent magnet groove and the third permanent magnet groove are all in a straight shape; the first permanent magnet groove and the second permanent magnet groove are arranged in a line at a certain interval to form a lower permanent magnet group, and the lower permanent magnet group and the third permanent magnet groove are sequentially arranged from inside to outside along the radial direction of the rotor; a first permanent magnet 5-1 is arranged in the first permanent magnet groove, a second permanent magnet 5-2 is arranged in the second permanent magnet groove, and a third permanent magnet 5-3 is arranged in the third permanent magnet groove; a magnetic bridge is arranged between the first permanent magnet 5-1 and the second permanent magnet 5-2, and magnetic isolation grooves are arranged at two ends of the permanent magnet groove group. The directions of magnetic lines of force of a plurality of permanent magnet blocks of the permanent magnet are consistent; the load magnetic line of force of the motor is vertical to the permanent magnet.
As shown in fig. 3, comparing the graphs of the output torque with the current control angle of the surface mount type, the linear type, and the double linear type, the output torque of the motor is approximately decreased as the current control angle is increased. The descending range of the surface-mounted permanent magnet motor is obvious, and compared with a linear permanent magnet motor, the double linear permanent magnet motor has the advantages that the output torque is maximum when the electric angle is 20 degrees, and the stability is more stable. As the current control angle is enlarged, the output torque of the motor generally tends to decrease. The drop amplitude of the surface-mounted permanent magnet motor is obvious, the linear permanent magnet motor has a rising situation at 0-10 degrees, and the maximum output torque is 18.94 N.m when the electrical angle is 10 degrees. The performance of the double-linear permanent magnet motor is superior comprehensively.
The embodiments described in this specification are merely illustrative of implementations of the inventive concepts, and the scope of the invention should not be considered limited to the specific forms set forth in the embodiments, but rather the scope of the invention is intended to include equivalent technical means as would be understood by those skilled in the art from the inventive concepts.
Claims (2)
1. Two style of calligraphy PMSM structures of multistage partial type, its characterized in that: the motor comprises a stator (1) and a rotor (5) which are nested, and an annular air gap (6) is formed between the stator (1) and the rotor (5); a plurality of groups of permanent magnet groove groups are uniformly embedded in the rotor (5) along the circumferential direction, each permanent magnet groove group comprises a first permanent magnet groove, a second permanent magnet groove and a third permanent magnet groove, and the first permanent magnet groove, the second permanent magnet groove and the third permanent magnet groove are all in a straight shape; the first permanent magnet groove and the second permanent magnet groove are arranged in a line at a certain interval to form a lower permanent magnet group, and the lower permanent magnet group and the third permanent magnet groove are sequentially arranged from inside to outside along the radial direction of the rotor; a first permanent magnet (5-1) is arranged in the first permanent magnet groove, a second permanent magnet (5-2) is arranged in the second permanent magnet groove, and a third permanent magnet (5-3) is arranged in the third permanent magnet groove; a magnetic bridge is arranged between the first permanent magnet (5-1) and the second permanent magnet (5-2), and magnetic isolation grooves are arranged at two ends of the permanent magnet groove group.
2. The multi-segment split double-linear permanent magnet synchronous motor structure of claim 1, characterized in that: the stator (1) comprises stator teeth (3), a stator yoke (2) and an armature winding (2-1), and the armature winding (2-1) is wound on the stator teeth (3) through a three-phase armature winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023095144.XU CN214045385U (en) | 2020-12-21 | 2020-12-21 | Multi-section split type double-linear permanent magnet synchronous motor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023095144.XU CN214045385U (en) | 2020-12-21 | 2020-12-21 | Multi-section split type double-linear permanent magnet synchronous motor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214045385U true CN214045385U (en) | 2021-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023095144.XU Active CN214045385U (en) | 2020-12-21 | 2020-12-21 | Multi-section split type double-linear permanent magnet synchronous motor structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN214045385U (en) |
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- 2020-12-21 CN CN202023095144.XU patent/CN214045385U/en active Active
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