CN210327292U - Rotary transformer magnetic pole angle positioning structure for permanent magnet synchronous motor - Google Patents
Rotary transformer magnetic pole angle positioning structure for permanent magnet synchronous motor Download PDFInfo
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- CN210327292U CN210327292U CN201921384230.7U CN201921384230U CN210327292U CN 210327292 U CN210327292 U CN 210327292U CN 201921384230 U CN201921384230 U CN 201921384230U CN 210327292 U CN210327292 U CN 210327292U
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- permanent magnet
- rotary transformer
- magnet synchronous
- synchronous motor
- flat key
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Abstract
A magnetic pole angle positioning structure of a rotary transformer for a permanent magnet synchronous motor comprises a shell, a circular permanent magnet synchronous motor stator, a permanent magnet synchronous motor rotor, a shaft and a rotary transformer, wherein the rotary transformer comprises the rotary transformer stator and a rotary transformer rotor The position relation between the wire inserting starting slot on the iron core of the transformer stator and the flat key of the motor stator corresponds.
Description
Technical Field
The utility model relates to a motor technology.
Background
The magnetic pole angle of a rotary transformer of a permanent magnet synchronous motor for the existing new energy automobile is usually positioned by fixing a rotor of the rotary transformer and then adjusting a stator of the rotary transformer within a 360-degree mechanical angle range to enable the magnetic pole angle of the rotary transformer to be consistent with the magnetic pole angle of the permanent magnet synchronous motor; there are problems: 1. the rotary transformer is inconvenient to zero, the magnetic pole angle is confirmed by self-learning of the motor controller after each zero setting, and the magnetic pole angle of the rotary transformer of one motor needs to be zero set for multiple times, so that the time consumption is long, and the efficiency is low; 2. the rotary transformer generally adopts a multi-pole structure, and is at least a two-pole structure, so that more than two zero positions exist in the circumferential direction of the magnetic pole angle, for example, the three-pair rotary transformer is only zero-adjusted by a zero adjusting machine, three zero positions exist between 360-degree circumferences, the zero positions cannot accurately correspond to the zero positions of the motor controller, and once the zero adjustment is not accurate, the speed adjustment of the controller is difficult.
Disclosure of Invention
The invention aims to provide a rotary transformer magnetic pole angle positioning structure for a permanent magnet synchronous motor, which is accurate in assembly positioning and can ensure that the magnetic pole angle of a rotary transformer is consistent with the magnetic pole angle of the permanent magnet synchronous motor without adjusting the stator of the rotary transformer.
The utility model discloses a realize like this: the rotary transformer comprises a shell with a rear end cover, a circular permanent magnet synchronous motor stator arranged in the shell, a permanent magnet synchronous motor rotor, a shaft and a rotary transformer, wherein a plurality of permanent magnets are uniformly distributed on the outer surface of the axis of the circular permanent magnet synchronous motor stator, the shaft is arranged on the axis of the permanent magnet synchronous motor rotor, the rotary transformer is arranged on the rear end cover, the rotary transformer comprises a rotary transformer stator and a rotary transformer rotor, and the rotary transformer is characterized in that the circular permanent magnet synchronous motor stator and the shell are positioned through a flat key groove arranged between an iron core of the circular permanent magnet synchronous motor stator and the shell and a motor stator flat key arranged on the flat key groove, the shell and the rear end cover are positioned through positioning pin holes arranged on the shell and the rear end cover and positioning pins inserted in the positioning pin holes, the rotary transformer stator and the rear end cover are positioned through positioning holes arranged on the iron core of the rotary transformer stator The method comprises the following steps of bolt positioning, positioning a permanent magnet synchronous motor rotor and a shaft through a flat key groove arranged between an iron core and the shaft of the permanent magnet synchronous motor rotor and a motor rotor flat key arranged on the flat key groove, positioning a rotary transformer rotor and the shaft through the flat key groove arranged between the iron core and the shaft of the rotary transformer rotor and the rotary transformer rotor flat key arranged on the flat key groove, corresponding the position relation between a permanent magnet arranged on the permanent magnet synchronous motor rotor and a motor rotor flat key on the permanent magnet synchronous motor rotor to the position relation between a permanent magnet on the rotary transformer rotor and the motor rotor flat key, and corresponding the position relation between a coil inserting starting groove on an iron core of a circular ring-shaped permanent magnet synchronous motor stator and the position relation between a coil inserting starting groove on the iron core of the rotary transformer stator and the motor stator flat key.
The position relation between the permanent magnet arranged on the permanent magnet synchronous motor rotor and the motor rotor flat key on the permanent magnet synchronous motor rotor corresponds to the position relation between the permanent magnet on the rotary transformer rotor and the motor rotor flat key, and the permanent magnet synchronous motor rotor and the rotary transformer rotor are positioned on the shaft through the motor rotor flat key and the rotary transformer rotor flat key respectively, so that the permanent magnet synchronous motor rotor and the rotary transformer rotor can be determined to have the same magnetic pole (N pole and S pole) direction and the same magnetic pole position as long as the assembly is completed.
Similarly, the position relationship between the inserting line initial slot on the circular ring-shaped permanent magnet synchronous motor stator core and the motor stator flat key corresponds to the position relationship between the inserting line initial slot on the rotary transformer stator and the motor stator flat key, and the circular ring-shaped permanent magnet synchronous motor stator core and the shell, the shell and the rear end cover, and the rear end cover and the rotary transformer stator are fixedly connected through the motor stator flat key, the positioning pin and the bolt respectively, so that the inserting line initial slot on the circular ring-shaped permanent magnet synchronous motor stator core and the inserting line initial slot on the rotary transformer stator have the same position.
Because the permanent magnet synchronous motor rotor and the rotary transformer rotor have the same magnetic pole (N pole and S pole) direction and the same magnetic pole position, the coil inserting starting groove on the circular ring-shaped permanent magnet synchronous motor stator core and the coil inserting starting groove on the rotary transformer stator have the same position, and therefore, the permanent magnet synchronous motor rotor and the rotary transformer rotor have the same magnetic pole (N pole and S pole) direction and the same included angle between the magnetic pole and the coil inserting starting groove.
Therefore, after the assembly is completed, the stator of the rotary transformer does not need to be adjusted.
Compared with the prior art, the utility model, have assembly positioning accurate, need not adjust just can guarantee that resolver magnetic pole angle and PMSM's magnetic pole angle is unanimous again to resolver's stator.
Advantageous effects
1. The consistency is guaranteed by zero setting of the motor rotary transformer, and the error-proofing effect is achieved.
2. The zero adjustment efficiency of the rotary transformer is improved, and the zero adjustment time of the rotary transformer is greatly shortened.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a sectional view a-a of fig. 1.
Fig. 3 is a schematic view of a resolver mounting on a motor.
The sequence numbers in the figures illustrate: the motor comprises a shell 1, a motor stator flat key 2, a circular ring-shaped permanent magnet synchronous motor stator 3, a permanent magnet synchronous motor rotor 4, a rear end cover 5, a shaft 6, a motor rotor flat key 7, a rotary transformer stator 8, a rotary transformer rotor 9, a rotary transformer rotor flat key 10, a bolt 11, a positioning pin 12, a permanent magnet 13 and a line inserting starting groove 14.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings and examples:
the utility model comprises a casing 1 with a rear end cover, a circular permanent magnet synchronous motor stator 3 arranged in the casing 1, a permanent magnet synchronous motor rotor 4 which is arranged on the outer surface of the axis of the circular permanent magnet synchronous motor stator 3 and is evenly provided with a plurality of permanent magnets 13, a shaft 6 arranged on the axis of the permanent magnet synchronous motor rotor 4, and a rotary transformer arranged on the rear end cover 5, wherein the rotary transformer comprises a rotary transformer stator 8 and a rotary transformer rotor 9, and the special point is that the circular permanent magnet synchronous motor stator 3 and the casing 1 are positioned by a flat key groove arranged between the circular permanent magnet synchronous motor stator 3 and the casing 1 and a motor stator flat key 2 arranged on the flat key groove, the casing 1 and the rear end cover 5 are positioned by positioning pin holes arranged on the casing 1 and the rear end cover 5 and a positioning pin 12 inserted in the positioning pin hole, the resolver stator 8 and the rear end cover 5 are positioned by positioning holes provided in the iron core of the resolver stator 8 and the rear end cover 5 and bolts 11 fixed to the positioning holes, the permanent magnet synchronous motor rotor 4 and the shaft 6 are positioned by a flat key groove provided between the iron core of the permanent magnet synchronous motor rotor and the shaft 6 and a motor rotor flat key 7 provided on the flat key groove, the resolver rotor 9 and the shaft 6 are positioned by a flat key groove provided between the iron core of the resolver rotor 9 and the shaft 6 and a resolver rotor flat key 10 provided on the flat key groove, the positional relationship between the permanent magnet 13 provided on the permanent magnet synchronous motor rotor 4 and the motor rotor flat key 7 on the permanent magnet synchronous motor rotor 4 and the permanent magnet on the resolver rotor 9 (although the permanent magnet on the resolver stator 8 is not shown in the drawings, however, since the structural principle of the resolver stator 8 is the same as that of the permanent magnet synchronous motor, therefore, referring to the illustration of the permanent magnet 13 on the stator 3 of the permanent magnet synchronous motor in the drawing, those skilled in the art know that the permanent magnet on the resolver stator 8) corresponds to the position relationship between the motor rotor flat key 7, and the position relationship between the insertion start slot 14 on the circular ring-shaped permanent magnet synchronous motor stator 3 and the motor stator flat key 2 corresponds to the insertion start slot on the resolver stator 8 (although the line start slot on the resolver stator 8 is not illustrated in the drawing, since the structural principle of the resolver stator 8 is the same as that of the permanent magnet synchronous motor, those skilled in the art know that the insertion start slot on the resolver stator 8 corresponds to the position relationship between the motor stator flat key 2 with reference to the illustration of the insertion start slot 14 on the permanent magnet synchronous motor stator 3 in the drawing.
Here, in order to facilitate the determination of the starting position of the rotor 4 of the pmsm, further improve the efficiency of the resolver zero adjustment and shorten the time for the resolver zero adjustment, the rotor flat key 7 of the electric machine is directly on the same line as the rotor flat key 10 of the resolver.
Claims (2)
1. A magnetic pole angle positioning structure of a rotary transformer for a permanent magnet synchronous motor comprises a casing with a rear end cover, a circular permanent magnet synchronous motor stator arranged in the casing, a permanent magnet synchronous motor rotor arranged on the outer surface of the axis of the circular permanent magnet synchronous motor stator and uniformly provided with a plurality of permanent magnets, a shaft arranged on the axis of the permanent magnet synchronous motor rotor, and a rotary transformer arranged on the rear end cover, wherein the rotary transformer comprises a rotary transformer stator and a rotary transformer rotor, the rotary transformer is characterized in that the circular permanent magnet synchronous motor stator and the casing are positioned by a flat key groove arranged between an iron core of the circular permanent magnet synchronous motor stator and the casing and a motor stator flat key arranged on the flat key groove, the casing and the rear end cover are positioned by positioning pin holes arranged on the casing and the rear end cover and positioning pins inserted in the positioning pin holes, the rotary transformer stator and the rear end cover are positioned through positioning holes arranged on an iron core and the rear end cover of the rotary transformer stator and bolts fixed on the positioning holes, the permanent magnet synchronous motor rotor and the shaft are positioned through a flat key groove arranged between the iron core and the shaft of the permanent magnet synchronous motor rotor and a motor rotor flat key arranged on the flat key groove, the rotary transformer rotor and the shaft are positioned through a flat key groove arranged between the iron core and the shaft of the rotary transformer rotor and a rotary transformer rotor flat key arranged on the flat key groove, the position relation between a permanent magnet arranged on the permanent magnet synchronous motor rotor and a motor rotor flat key on the permanent magnet synchronous motor rotor corresponds to the position relation between a permanent magnet on the rotary transformer rotor and a motor rotor flat key, the position relation between a rule starting groove on the iron core of the circular permanent magnet synchronous motor stator and a rule starting groove on the iron core of the rotary transformer stator and a motor fixing groove on the iron core of the circular permanent magnet synchronous motor stator The position relationship between the sub-flat keys corresponds.
2. The magnetic pole angle positioning structure of a rotary transformer for a permanent magnet synchronous motor according to claim 1, wherein the motor rotor flat key is directly on the same bar as the rotary transformer rotor flat key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921384230.7U CN210327292U (en) | 2019-08-25 | 2019-08-25 | Rotary transformer magnetic pole angle positioning structure for permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921384230.7U CN210327292U (en) | 2019-08-25 | 2019-08-25 | Rotary transformer magnetic pole angle positioning structure for permanent magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210327292U true CN210327292U (en) | 2020-04-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921384230.7U Expired - Fee Related CN210327292U (en) | 2019-08-25 | 2019-08-25 | Rotary transformer magnetic pole angle positioning structure for permanent magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210327292U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114825821A (en) * | 2022-05-12 | 2022-07-29 | 揭阳市汇宝昌电器有限公司 | Design method of permanent magnet direct current motor positioning groove for deflection angle adjustment |
-
2019
- 2019-08-25 CN CN201921384230.7U patent/CN210327292U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114825821A (en) * | 2022-05-12 | 2022-07-29 | 揭阳市汇宝昌电器有限公司 | Design method of permanent magnet direct current motor positioning groove for deflection angle adjustment |
| CN114825821B (en) * | 2022-05-12 | 2023-03-28 | 揭阳市汇宝昌电器有限公司 | Design method of permanent magnet direct current motor positioning groove for deflection angle adjustment |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200414 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |