CN104124846A - Permanent magnet synchronous motor - Google Patents
Permanent magnet synchronous motor Download PDFInfo
- Publication number
- CN104124846A CN104124846A CN201410399633.4A CN201410399633A CN104124846A CN 104124846 A CN104124846 A CN 104124846A CN 201410399633 A CN201410399633 A CN 201410399633A CN 104124846 A CN104124846 A CN 104124846A
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- China
- Prior art keywords
- rotor
- stator
- synchronous motor
- magnet steel
- permagnetic synchronous
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Abstract
The invention discloses a permanent magnet synchronous motor. The permanent magnet synchronous motor comprises a rotor, a stator and a stator winding, wherein a magnet is arranged in the central area of the rotor; according to the permanent magnet synchronous motor, under the condition of not increasing the volume of the motor, the output power and efficiency of the motor can be improved, the material cost can be reduced, and the volume and space usage of the motor can be reduced.
Description
Technical field
The present invention relates to a kind of motor, relate in particular to a kind of permagnetic synchronous motor.
Background technology
The power output of permagnetic synchronous motor is larger, and the motor volume needing is also larger, thereby cannot meet at less installing space, provides powerful utilization needs.
Summary of the invention
The present invention aims to provide a kind of permagnetic synchronous motor, improves power output and the efficiency of motor in the situation that not increasing motor volume.
For achieving the above object, the technical solution used in the present invention is as follows:
Permagnetic synchronous motor disclosed by the invention, comprises rotor, stator and stator winding, and the central area of described rotor comprises magnet steel.The rotor magnetic energy product of this structure is large, can make the magnetic field height that stator produces assemble, thereby makes motor output high-energy.
Preferably, described magnet steel is cylinder, and the axis of magnet steel all overlaps with the axis of rotor, stator.Magnet steel is evenly arranged centered by stator center, makes the congregational rate of stator field best, thereby makes motor output energy maximum.
Preferably, the axial two ends of described magnet steel flush with stator, when magnet steel length is less than the axial length of stator, can affect the congregational rate in magnetic field; The axial length that magnet steel length is greater than stator can increase the consumption of magnet steel, thereby increases material cost.
Further, the rotor portion between described magnet steel and stator is magnetic conductor, is conducive to passing through of the magnetic line of force, further strengthens the congregational rate in magnetic field.
Preferably, the width of air gap between described rotor and stator is 0.7～1.7mm.
Preferably, described magnet steel is SmCo magnet steel.SmCo magnet steel has high energy product, extremely low temperature coefficient, and maximum operating temperature can reach 350 ℃, and subzero temperature is not limit, and when working temperature is more than 180 ℃, its maximum magnetic energy product and temperature stability and chemical stability are all over Nd-Fe-Bo permanent magnet material.
Preferably, described rotor is cylinder, and its cylindricity is higher than 0.01mm, and the perpendicularity on rotor end-face and the face of cylinder is higher than 0.01mm.In order to guarantee the High Rotation Speed of motor.
Preferably, the case hardness HRC of the contact-making surface of the bearing of described two ends of rotor is greater than 52.Resistance to wear while guaranteeing rotor high-speed rotation.
Permagnetic synchronous motor disclosed by the invention, can make stator field height assemble, thereby output high-energy, can meet very high rotating speed simultaneously, in the situation that same motor volume, power output of the present invention exceeds several times than existing similar motor, has improved greatly efficiency, reduced material cost, reduced the volume of motor and take up room.
Accompanying drawing explanation
Fig. 1 is cutaway view of the present invention;
In figure: 1-stator, 2-rotor, 3-stator winding, 4-air gap, 5-magnet steel, 6-magnetic conductor, 7-bearing, 8-screw.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the present invention is further elaborated.
As shown in Figure 1, the present embodiment comprises rotor 2, stator 1 and stator winding 3 and other annexes, rotor 2 is cylinder, stator 1 is for hollow cylinder and surround rotor 1, and the central area of rotor 1 is magnet steel 5, magnetic, 5 is cylinder, the axis of magnet steel 5 all overlaps with the axis of rotor 2, stator 1, and the axial both ends of the surface of magnet steel 5 flush with the axial both ends of the surface of stator 1, and the rotor portion that magnet steel 5 and stator are 1 is magnetic conductor 6; Between rotor 2 and stator 1, leave air gap 4; Rotor 1 two ends are enclosed within respectively in bearing 7, and rotor 1 two ends end face adopts screw 8 to connect machine shaft, by the rotation drive motor rotating shaft of rotor 1, rotates.
In the present embodiment, the diameter of rotor 2 is 60mm, and its cylindricity is 0.01mm, and the perpendicularity on rotor 2 end faces and the face of cylinder is 0.01mm; Stator 1 external diameter is 140mm, the axial dimension of stator 1 is 170mm, the axial full-size that stator 1 adds after stator winding 3 is 265mm, air gap 4 width between rotor 2 and stator 1 are 1.5mm, the width of air gap 4 is 1.5mm, magnet steel 5 adopts 200 ℃ of SmCo magnet steel assurances not demagnetize, and the case hardness HRC of the contact-making surface of bearing 7 is greater than 52.
The specified input voltage of the present embodiment is 380V, and rated output power is 75Kw, rated speed 3000rpm, and efficiency is greater than 95%, speed adjustable range 0～3000rpm stepless speed regulation.
Certainly; the present invention also can have other various embodiments; in the situation that not deviating from spirit of the present invention and essence thereof; those of ordinary skill in the art can make according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (8)
1. a permagnetic synchronous motor, comprises rotor, stator and stator winding, it is characterized in that: the central area of described rotor comprises magnet steel.
2. permagnetic synchronous motor according to claim 1, is characterized in that: described magnet steel is cylinder, and the axis of magnet steel all overlaps with the axis of rotor, stator.
3. permagnetic synchronous motor according to claim 1, is characterized in that: the axial two ends of described magnet steel flush with stator.
4. permagnetic synchronous motor according to claim 1, is characterized in that: the rotor portion between described magnet steel and stator is magnetic conductor.
5. permagnetic synchronous motor according to claim 1, is characterized in that: the width of air gap between described rotor and stator is 0.7～1.7mm.
6. permagnetic synchronous motor according to claim 1, is characterized in that: described magnet steel is SmCo magnet steel.
7. permagnetic synchronous motor according to claim 1, is characterized in that: described rotor is cylinder, and its cylindricity is higher than 0.01mm, and the perpendicularity on rotor end-face and the face of cylinder is higher than 0.01mm.
8. permagnetic synchronous motor according to claim 1, is characterized in that: the case hardness HRC of the contact-making surface of the bearing of described two ends of rotor is greater than 52.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410399633.4A CN104124846A (en) | 2014-08-13 | 2014-08-13 | Permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410399633.4A CN104124846A (en) | 2014-08-13 | 2014-08-13 | Permanent magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104124846A true CN104124846A (en) | 2014-10-29 |
Family
ID=51770148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410399633.4A Pending CN104124846A (en) | 2014-08-13 | 2014-08-13 | Permanent magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104124846A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4908347A (en) * | 1985-11-20 | 1990-03-13 | Allied-Signal Inc. | Dynamoelectric machine with diamagnetic flux shield |
| JPH089611A (en) * | 1994-06-21 | 1996-01-12 | Fuji Electric Co Ltd | Reverse salient cylinder permanent-magnet synchronous motor |
| CN1298220A (en) * | 1999-11-25 | 2001-06-06 | 株式会社日立制作所 | Ultrahigh speed permanent-magnetic rotary electric machine system |
| TW550871B (en) * | 1999-07-23 | 2003-09-01 | Advamced Rotary Systems Llc | Electric drive options |
| CN202679186U (en) * | 2012-07-20 | 2013-01-16 | 成都皮克电源有限公司 | A rare earth permanent magnetic moment automatic voltage-adjusting synchronous generator |
| CN103117633A (en) * | 2013-03-22 | 2013-05-22 | 湖南大学 | High-speed permanent magnet synchronous motor and assembly method thereof |
-
2014
- 2014-08-13 CN CN201410399633.4A patent/CN104124846A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4908347A (en) * | 1985-11-20 | 1990-03-13 | Allied-Signal Inc. | Dynamoelectric machine with diamagnetic flux shield |
| JPH089611A (en) * | 1994-06-21 | 1996-01-12 | Fuji Electric Co Ltd | Reverse salient cylinder permanent-magnet synchronous motor |
| TW550871B (en) * | 1999-07-23 | 2003-09-01 | Advamced Rotary Systems Llc | Electric drive options |
| CN1298220A (en) * | 1999-11-25 | 2001-06-06 | 株式会社日立制作所 | Ultrahigh speed permanent-magnetic rotary electric machine system |
| CN202679186U (en) * | 2012-07-20 | 2013-01-16 | 成都皮克电源有限公司 | A rare earth permanent magnetic moment automatic voltage-adjusting synchronous generator |
| CN103117633A (en) * | 2013-03-22 | 2013-05-22 | 湖南大学 | High-speed permanent magnet synchronous motor and assembly method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141029 |