CN1283033C - Split pole type permanent magnetic AC motor - Google Patents
Split pole type permanent magnetic AC motor Download PDFInfo
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- CN1283033C CN1283033C CN 200410012132 CN200410012132A CN1283033C CN 1283033 C CN1283033 C CN 1283033C CN 200410012132 CN200410012132 CN 200410012132 CN 200410012132 A CN200410012132 A CN 200410012132A CN 1283033 C CN1283033 C CN 1283033C
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The present invention discloses a split pole type permanent-magnet alternating current motor which comprises a main shaft, a shell, a stator and a rotor, wherein the stator is sheathed in the shell. Three phases of symmetrical windings are inlaid and arranged in a stator core. The rotor made of silicon steel sheets is fixed on the main shaft, a plurality of slots are arranged on an outer circle of the rotor, and guiding strips made of cast aluminum or cast copper are arranged in the slots. The present invention is characterized in that a groove is respectively arranged on side surfaces of each pair of magnetic poles, and permanent magnets are embedded into the grooves; end surfaces of the permanent magnets, which face to one side of the stator, can also be provided with anti-magnetic induction removing nets. The structure of the existing motor stator is kept unchanged by the present invention, a permanent magnet pole and a sensing pole are arranged on the rotor, the problems of the startup and the normal work of a permanent magnet motor are solved, and thus, the present invention has the advantages of simple whole structure, low cost, reliable operation, high power factors, easy startup, energy saving and environmental protection. The present invention has admirable industrial applying foreground.
Description
Technical field
The present invention relates to a kind of alternating current machine, particularly relate to a kind of permanent magnet AC motor.
Background technology
Mostly existing induction machine is to be made of stator and rotor, embeds three-phase symmetric winding in stator core, at rotor core cylindrical fluting, embeds the polyphase windings or the squirrel-cage winding of a closure.When three phase windings of stator connect three-phase alternating-current supply, can produce rotating magnetic field in air gap, lead on the rotating magnetic field cutting rotor or sliver make rotor produce induced current and electromagnetic torque, thereby promote rotor rotation, externally acting.But this motor exists, and power factor is low, the big and shortcomings such as rotational speed regulation and frequency non-linearization of induced current load.
At present, to the permanent magnet motor that utilizes magnetic energy developing to go out, existing a lot of reports.But these motor all are directly to make stator and rotor by permanent magnet mostly, though it has overcome the low shortcoming of power factor, have the cost height, be not easy to existing asynchronous induction motor such as is transformed at shortcoming.
Summary of the invention
Purpose of the present invention is intended to overcome above-mentioned shortcoming, provide a kind of with low cost, power factor is high, the split pole type permanent magnet AC motor of the existing asynchronous induction motor of easy transformation.
For reaching above-mentioned purpose; the present invention adopts following solution: comprise main shaft; shell; be enclosed within the stator in the shell; embed three-phase symmetric winding in the stator core; be fixed on the rotor that constitutes by silicon steel sheet on the main shaft; cylindrical at rotor has some grooves; cast aluminium or cast copper sliver are installed in groove; it is characterized in that: on the side of the position of the installation of rotor symmetry magnetic pole; respectively have a scalloped recess; in 360 ° of electric angles of every pair of magnetic pole; the start point of scalloped recess is 30 °-120 °, embeds permanent magnet in scalloped recess, and permanent magnet is installed good conductivity on the end face of stator one side sliver intersects the grid be made into; form the catch net that anti-air-gap field changes, promptly anti-degaussing induction net.
Above-mentioned split pole type permanent magnet AC motor is characterized in that: leave external series gap between described permanent magnet and the groove, inject the filler of diamagneticization class in the gap.
Above-mentioned split pole type permanent magnet AC motor is characterized in that: described anti-degaussing induction net is made by any good electric conducting material, implants on the end face of permanent magnet with casting or winding method.
Compared with prior art, the present invention has following advantage:
1, because the present invention has kept the structure of existing motor stator constant, just embedded permanent magnet on the side that every pair of pole pair of rotor is answered, so the present invention is easy to existing asynchronous induction motor is transformed, and its overall structure is simple, with low cost, reliable.
2, the position of installation permanent magnet is called permanent-magnet pole on the rotor of the present invention, and remainder is called induction pole.When magneto started, permanent-magnet pole and air-gap field were asynchronous, externally on average do not do work, and induction pole has induced current, produced electromagnetic torque, and progressively drove the rotor rotation, until synchronously; Magneto is when nominal load, and induction pole is not worked (induced current is zero), is that permanent-magnet pole and air-gap rotating magnetic field interact, and promotes rotor rotation acting, and does not have exciting current in the course of the work.Therefore, when the present invention does the synchronous machine operation, power factor height (near 95%), and the serviceability of motor synchronizing self-stabilization is preferably arranged when the load conversion.
3, because the present invention is provided with anti-degaussing induction net on the end face of permanent magnet, so just can prevent the erosion of external magnetic field to permanent magnet, increase diamagnetic sensitivity and anti-demagnetizing action that changes of permanent magnet, and the reduction of permanent magnet magnetic, can directly influence exerting oneself of motor, reduce the operating efficiency of motor, increase the maintenance cost of motor, so the present invention can move for a long time, reduce maintenance cost.
4, the present invention utilizes the magnetic energy acting, is easy to start.
5, energy-conserving and environment-protective of the present invention, the scope of application is wide.
Description of drawings
Fig. 1, structural representation of the present invention.
The structural representation of Fig. 2, permanent magnet of the present invention.
Among the figure: 1, shell; 2, stator; 3, rotor; 4, main shaft; 5, groove; 6, permanent magnet; 7, suspension ring; 8, cast aluminium sliver; 9, anti-degaussing induction net; 10, sliver.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
As shown in Figure 1, the present invention includes main shaft 4, shell 1, be enclosed within the stator 2 in the shell 1, embed three-phase symmetric winding A-X in stator 2 iron cores, B-Y, C-Z, be fixed on the rotor 3 that constitutes by silicon steel sheet on the main shaft 4, cylindrical at rotor 3 has some grooves, cast aluminium or cast copper sliver 8 are installed in groove, on every pair of magnetic pole side of rotor 3, are respectively had a scalloped recess 5, in 360 ° of electric angles of every pair of magnetic pole, the start point of scalloped recess 5 is θ, 30 °≤θ≤120 °, embeds rare-earth permanent magnet 6 in groove 5, leave external series gap between rare-earth permanent magnet 6 and the groove 5, in the gap, inject the filler of diamagneticization class.In the present embodiment, θ=60 °, promptly the N utmost point of rare-earth permanent magnet 6 is positioned on the fan-shaped position that 60 °-120 °, the S utmost point are positioned at 240 °-300 °.
The position that permanent magnet 6 is installed on the rotor 3 of the present invention is called permanent-magnet pole, and remainder is called induction pole, and the shared segment angle of permanent-magnet pole is θ, and the shared segment angle of induction pole is (π-θ), place the groove of sliver 8 and count P
2Count P with the groove of stator
1Satisfy formula: P
2/ 2 (π-θ) ≠ P
1/ 2 π.
As shown in Figure 2, rare-earth permanent magnet 6 is installed good conductivity on the end face of stator 2 one sides sliver 10 intersects the anti-degaussing induction net 9 that is made into, anti-degaussing induction net 9 is made by any good electric conducting materials such as copper, aluminium, implants on the end face of permanent magnet 6 with casting or winding method.Permanent magnet 6 is after magnet magnetizes, embedding rotor 3, the characteristic of magnetization of permanent magnet, be vulnerable to the influence that surrounding magnetic field changes, the opposing magnetic field of big amplitude can produce very big demagnetizing action to permanent magnet, is corroded by alternating magnetic field when the load conversion changes with the startup uniform velocity in order to prevent the permanent magnetism iron core, produces demagnetizing action, and then influence the power output of motor and life-span etc., therefore on permanent magnet 6, to install anti-degaussing induction net additional.
Stator structure of the present invention and design, consistent with general synchronous or induction machine, operation principle is also consistent.Magneto of the present invention is when nominal load, and induction pole is not worked (induced current is zero), is that permanent-magnet pole and air-gap rotating magnetic field interact, and promotes rotor rotation acting; When magneto started, permanent-magnet pole and air-gap field were asynchronous, externally on average do not do work, and induction pole has induced current, produced electromagnetic torque, and progressively drove the rotor rotation, until synchronously.
Claims (3)
1, a kind of split pole type permanent magnet AC motor, comprise main shaft, shell, be enclosed within the stator in the shell, embed three-phase symmetric winding in the stator core, be fixed on the rotor that constitutes by silicon steel sheet on the main shaft, cylindrical at rotor has some grooves, cast aluminium or cast copper sliver are installed in groove, it is characterized in that: on the side of the position of the installation of rotor symmetry magnetic pole, respectively have a scalloped recess, in 360 ° of electric angles of every pair of magnetic pole, the start point of scalloped recess is 30 °-120 °, embed permanent magnet in scalloped recess, permanent magnet is installed good conductivity on the end face of stator one side sliver intersects the anti-degaussing induction net be made into.
2, split pole type permanent magnet AC motor according to claim 1 is characterized in that: leave external series gap between described permanent magnet and the groove, inject the filler of diamagneticization class in the gap.
3, split pole type permanent magnet AC motor according to claim 1 and 2 is characterized in that: described anti-degaussing induction net is made by any good electric conducting material, implants on the end face of permanent magnet with casting or winding method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410012132 CN1283033C (en) | 2004-01-19 | 2004-01-19 | Split pole type permanent magnetic AC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410012132 CN1283033C (en) | 2004-01-19 | 2004-01-19 | Split pole type permanent magnetic AC motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1558531A CN1558531A (en) | 2004-12-29 |
| CN1283033C true CN1283033C (en) | 2006-11-01 |
Family
ID=34350963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410012132 Expired - Fee Related CN1283033C (en) | 2004-01-19 | 2004-01-19 | Split pole type permanent magnetic AC motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1283033C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107733205A (en) * | 2017-11-27 | 2018-02-23 | 南方电机科技有限公司 | A kind of magneto and the equipment including the motor |
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2004
- 2004-01-19 CN CN 200410012132 patent/CN1283033C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1558531A (en) | 2004-12-29 |
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