CN201336619Y - Energy-saving permanent magnet synchronous motor with high efficiency and high starting torque - Google Patents
Energy-saving permanent magnet synchronous motor with high efficiency and high starting torque Download PDFInfo
- Publication number
- CN201336619Y CN201336619Y CNU2008201842488U CN200820184248U CN201336619Y CN 201336619 Y CN201336619 Y CN 201336619Y CN U2008201842488 U CNU2008201842488 U CN U2008201842488U CN 200820184248 U CN200820184248 U CN 200820184248U CN 201336619 Y CN201336619 Y CN 201336619Y
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- Prior art keywords
- permanent magnet
- rotor
- synchronous motor
- fan
- magnet synchronous
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Abstract
The utility model discloses an energy-saving permanent magnet synchronous motor with high efficiency and high starting torque. The permanent magnet synchronous motor is mainly used for serving as a drive motor on a beam pumping unit. The rotor of the permanent magnet synchronous motor comprises sector magnetic poles, a magnetic shield, a trapezoidal permanent magnet, a conducting bar, a conductor end ring and the like; the sector magnetic poles with different radiuses are positioned in the center of the rotor, and are formed by stacking magnetic pole laminations which are obtained by blanking magnetic conductive sheets; the magnetic shield is made of a non-magnetic conductive material; the magnetic poles and the magnetic shield are assembled by dovetail grooves; the outside diameter of the rotor presents a petal shape; squirrel-cages used for starting are arranged on the magnetic poles; permanent magnets are arranged in clearances among the magnetic poles; the magnetizing direction of the permanent magnets is the tangential direction of the rotor; and the adjacent two permanent magnets are arranged in a way that the poles with the same polarity are opposite. The permanent magnet synchronous motor has small losses, high starting torque, large overload capacity and high running efficiency, thereby having obvious energy-saving effect when being used on the beam pumping unit.
Description
Technical field
The utility model relates to a kind of energy-efficient high starting torque permanent magnet synchronous motor, is mainly used on the beam pumping unit as dragging power.
Background technology
The shortcoming that existing torque moment permanent-magnet synchronous motor exists is: there are the gap in magnet steel and magnetic pole, occur the broken technology obstacle that damages magnet steel during the dress magnet steel, and reduced the heat dispersion of magnet steel, influenced the startability of motor, increase magnetic loss, thereby reduced electric efficiency; Its magnet steel gland influences the magnet steel heat radiation, and increases material usage, has increased production cost.
Summary of the invention
The purpose of this utility model just provides a kind of energy-efficient high starting torque permanent magnet synchronous motor, to solve that prior art exists because there are the gap in magnet steel and magnetic pole, the heat dispersion of the technology obstacle of the broken damage of appearance magnet steel, magnet steel is relatively poor when causing adorning magnet steel, influenced the startability of motor, increase magnetic loss, reduced electric efficiency; Its magnet steel gland influences the magnet steel heat radiation, and increases material usage, production cost problem of higher.
The technical solution of the utility model is: comprise stator, the rotor and the end cap of band permanent magnet, rotor coaxial is installed in the stator, the rotating shaft two ends rotational support of rotor is at the end cap center at stator two ends, it is characterized in that: described rotor comprises fan-shaped magnetic pole, magnetic shield, permanent magnet, sliver, conductor end ring and described rotating shaft, magnetic shield is sleeved in the rotating shaft, at the outer peripheral face of this magnetic shield a plurality of fan-shaped magnetic poles are installed, and the line that makes the outer circumference end top of each fan-shaped magnetic pole to constitute with described rotating shaft core be the cylinder in the center of circle, in the outer at these cylindrical two ends the conductor end ring is housed, between adjacent fan-shaped magnetic pole, leave spaced radial, a permanent magnet is housed in each this interval; Inside in the outer circumference end of described fan-shaped magnetic pole is provided with along the uniform a plurality of axial holes of this outer circumference end, in this hole sliver is housed, and the two ends of this sliver all are connected with described conductor end ring, forms the rotor mouse cage; Described magnetic shield is made by non-magnet_conductible material, and described fan-shaped magnetic pole is repeatedly adorned by the punching of multilayer magnetic conduction and formed.
Interior Zhou Duan at described fan-shaped magnetic pole has dovetail groove, is assembled on the dovetail of magnetic shield.
The cross section of described permanent magnet is trapezoidal, and its top is towards the outer peripheral face of rotor, and its magnetizing direction is the tangential direction of rotor, and adjacent two permanent magnet same polarities are relative.
The arc diameter of described fan-shaped magnetic pole outer circumference end makes the cross section of this rotor be petal less than described cylindrical diameter.
The utlity model has following characteristics:
1, eliminated the gap of prior art magnet steel (permanent magnet) with minimum 30 microns of magnetic pole, the taper permanent magnet can closely cooperate with fan-shaped magnetic pole, and to have strengthened magnetic close, improved magnetic flux, reduce the consumption of magnet steel, the broken technology obstacle that damages magnet steel appears when having solved the dress magnet steel, strengthen the heat dispersion of magnet steel, prolonged useful life.
2, the petal rotor profile makes between rotor and the stator and forms non-uniform gap, has improved startability, has reduced various losses, has improved the close property of magnetic of magnetic pole, has improved motor efficiency.
3, deduct the magnet steel gland, carry out air and be convenient to the magnet steel heat radiation, reduced the material consumption, improve processing technology, reduce production costs every magnetic.
Description of drawings
Fig. 1 is the axial cutaway view of general structure of the present utility model;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is the structural representation of fan-shaped magnetic pole one side of the present utility model;
Fig. 4 is the end face structure schematic diagram of the utility model magnetic shield;
Fig. 5 is the perspective view of the utility model permanent magnet;
Fig. 6 is the perspective view of the utility model rotor mouse cage (being that sliver is connected the back with the conductor end ring).
Embodiment
Referring to Fig. 1～Fig. 6, the utility model comprises stator (end cap that comprises two ends) 6 and rotor B, and rotor B is coaxial to be installed in the stator 6, and the two ends rotational support of the rotating shaft 7 of rotor B is at the end cap center at stator two ends.Described rotor B comprises fan-shaped magnetic pole 1, magnetic shield 2, permanent magnet 3, sliver 4, conductor end ring 5 and described rotating shaft 7, magnetic shield 2 is sleeved in the rotating shaft 7, be plugged on mutually at the outer peripheral face of this magnetic shield 2 dovetail groove 11 by dovetail 21 Zhou Duan in a plurality of fan-shaped magnetic poles 1, and the axle center that the line that makes the outer circumference end top of each fan-shaped magnetic pole 1 constitutes with described rotating shaft 7 is the cylinder 9 in the center of circle, conductor end ring 5 is equipped with in outer at the two ends of this cylinder 9, leave spaced radial 81 of adjacent fan-shaped magnetic pole, in each this interval 8, a permanent magnet 3 is housed.Inside in the outer circumference end of described fan-shaped magnetic pole 1 is provided with along the uniform a plurality of axial holes (groove) 12 of this outer circumference end, in this hole 12 sliver 4 is housed, and the two ends of this sliver 4 all are connected with described conductor end ring 5, forms rotor mouse cage as shown in Figure 6.Described magnetic shield 2 is made by non-magnet_conductible material, described fan-shaped magnetic pole 1 by multilayer magnetic conduction punching (as silicon steel sheet etc.) repeatedly dress form.
The cross section of described permanent magnet 3 is trapezoidal (as shown in Figure 5), and its top is towards the outer peripheral face of rotor, and the magnetizing direction of permanent magnet 3 is tangential direction of rotor, and adjacent two permanent magnet 3 same polarities relative (polarity of an adjacent side is identical).
The arc diameter of described fan-shaped magnetic pole 1 outer circumference end makes the cross section of this rotor be petal (as shown in Figure 2) less than the diameter (center of circle of just fan-shaped magnetic pole 1 outer circumference end does not overlap with the axle center of cylinder 9) of described cylinder 9.
Claims (4)
1. energy-efficient high starting torque permanent magnet synchronous motor, comprise stator, the rotor and the end cap of band permanent magnet, rotor coaxial is installed in the stator, the rotating shaft two ends rotational support of rotor is at the end cap center at stator two ends, it is characterized in that: described rotor comprises fan-shaped magnetic pole, magnetic shield, permanent magnet, sliver, conductor end ring and described rotating shaft, magnetic shield is sleeved in the rotating shaft, at the outer peripheral face of this magnetic shield a plurality of fan-shaped magnetic poles are installed, and the line that makes the outer circumference end top of each fan-shaped magnetic pole to constitute with described rotating shaft core be the cylinder in the center of circle, in the outer at these cylindrical two ends the conductor end ring is housed, between adjacent fan-shaped magnetic pole, leave spaced radial, a permanent magnet is housed in each this interval; Inside in the outer circumference end of described fan-shaped magnetic pole is provided with along the uniform a plurality of axial holes of this outer circumference end, in this hole sliver is housed, and the two ends of this sliver all are connected with described conductor end ring, forms the rotor mouse cage; Described magnetic shield is made by non-magnet_conductible material, and described fan-shaped magnetic pole is repeatedly adorned by the punching of multilayer magnetic conduction and formed.
2. energy-efficient high starting torque permanent magnet synchronous motor according to claim 1, it is characterized in that: the interior Zhou Duan at described fan-shaped magnetic pole has dovetail groove, outer peripheral face at described magnetic shield is provided with the dovetail that cooperates with this dovetail groove, and this dovetail groove and dovetail assemble mutually.
3. energy-efficient high starting torque permanent magnet synchronous motor according to claim 1, it is characterized in that: the cross section of described permanent magnet is trapezoidal, this trapezoidal top is towards the outer peripheral face of rotor, the magnetizing direction of this permanent magnet is the tangential direction of rotor, and adjacent two permanent magnet same polarities are relative.
4. energy-efficient high starting torque permanent magnet synchronous motor according to claim 1 is characterized in that: the arc diameter of described fan-shaped magnetic pole outer circumference end makes the cross section of this rotor be petal less than described cylindrical diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201842488U CN201336619Y (en) | 2008-12-29 | 2008-12-29 | Energy-saving permanent magnet synchronous motor with high efficiency and high starting torque |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201842488U CN201336619Y (en) | 2008-12-29 | 2008-12-29 | Energy-saving permanent magnet synchronous motor with high efficiency and high starting torque |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201336619Y true CN201336619Y (en) | 2009-10-28 |
Family
ID=41288281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201842488U Expired - Fee Related CN201336619Y (en) | 2008-12-29 | 2008-12-29 | Energy-saving permanent magnet synchronous motor with high efficiency and high starting torque |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201336619Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185449A (en) * | 2011-02-23 | 2011-09-14 | 华北电力大学 | Self-starting permanent magnet motor with three-section-circular-arc magnetic pole structure |
| CN106059148A (en) * | 2016-08-04 | 2016-10-26 | 上海电机学院 | Permanent magnetic motor and rotor thereof |
-
2008
- 2008-12-29 CN CNU2008201842488U patent/CN201336619Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185449A (en) * | 2011-02-23 | 2011-09-14 | 华北电力大学 | Self-starting permanent magnet motor with three-section-circular-arc magnetic pole structure |
| CN106059148A (en) * | 2016-08-04 | 2016-10-26 | 上海电机学院 | Permanent magnetic motor and rotor thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091028 Termination date: 20121229 |