CN106849429A - Single-phase self-starting permanent magnet synchronous motor - Google Patents
Single-phase self-starting permanent magnet synchronous motor Download PDFInfo
- Publication number
- CN106849429A CN106849429A CN201710137253.7A CN201710137253A CN106849429A CN 106849429 A CN106849429 A CN 106849429A CN 201710137253 A CN201710137253 A CN 201710137253A CN 106849429 A CN106849429 A CN 106849429A
- Authority
- CN
- China
- Prior art keywords
- rotor
- permanent magnet
- pole
- stator
- synchronous motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 17
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims 1
- 229910000859 α-Fe Inorganic materials 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 230000001154 acute effect Effects 0.000 abstract 1
- 229910001004 magnetic alloy Inorganic materials 0.000 abstract 1
- 230000010349 pulsation Effects 0.000 abstract 1
- 238000013016 damping Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 238000004804 winding Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/02—Details of the magnetic circuit characterised by the magnetic material
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
A single-phase self-starting permanent magnet synchronous motor comprising: the stator and the permanent magnet rotor have the same pole number; the width of the air gap between the stator and the rotor is narrowed along the set circumferential direction under each pole, so that in a free state, the axis of each pole of the rotor deflects by an acute angle along the set circumferential direction by taking the axis of the closest one pole of the stator as a reference; the method is characterized in that: the cylindrical surface of the permanent magnet rotor is fastened in a cylinder made of soft magnetic alloy. The design can weaken the vibration noise caused by the rotation speed pulsation and maintain the efficiency of the motor without increasing the cost of electromagnetic materials.
Description
Technical field
The present invention relates to a kind of single-phase self-starting permanent magnet synchronous motor, more particularly to its rotor structure, in international monopoly
In classification chart, classification can belong to H02P25/00.
Background technology
There are Instantaneous Speed Fluctuations and cause vibration noise in prior art single-phase self-starting permanent magnet synchronous motor when operating.
The content of the invention
The technical problems to be solved by the invention are：Propose a kind of single-phase self-starting permanent magnet synchronous motor, can have compared with
Low-vibration noise, cost is relatively low.
The technical scheme that the present invention solves technical problem is a kind of single-phase self-starting permanent magnet synchronous motor, including：Equally
The stator and p-m rotor of number of poles；The width of air gap is received in the circumferencial direction that each pole lower edge sets between the stator and rotor
It is narrow, thus in a free state, each pole axis line of rotor with the axis of the pole of hithermost stator one as reference, along the circumference side of setting
To deflecting a sharp angle；It is characterized in that：The face of cylinder of the p-m rotor is anchored in the cylinder that magnetically soft alloy is made.
The rotor is prior in addition to the quality due to cylinder increases and forms inertia damping to the Instantaneous Speed Fluctuations of rotor
It is that, according to Lenz's law, the cylinder is both made up of magnetically soft alloy, its satisfactory electrical conductivity can be to the transient speed ripple of p-m rotor
Movable property gives birth to electromagnetic damping, thus weakens vibration noise caused by speed ripple；Its good magnetic conductivity makes its position for occupying allow work
Make the low loss of magnetic flux to pass through, thus be maintained the efficiency of motor, without increasing electromagnetic material cost.
One of further design of above-mentioned technical proposal is：The magnetically soft alloy is electrical pure iron.Electrical pure iron has excellent
Elegant magnetic conductivity and the performance for being easy to machine cut or pressure processing, its moderate electrical conductivity are producing enough electromagnetic dampings
On the basis of, rotor circuit power factor can be improved and larger induction torque is produced, improve startability.
The two of the further design of above-mentioned technical proposal are：The magnetically soft alloy is ferritic stainless steel.Its electromagnetic performance
Less than electrical pure iron, but without anticorrosion.
Technical scheme and effect will be further described with reference to accompanying drawing in a specific embodiment.
Brief description of the drawings
Fig. 1 is embodiment of the present invention motor electromagnetism basic structure schematic diagram；
Fig. 2 is embodiment of the present invention motor rotor structure schematic diagram.
Specific embodiment
Prior art single-phase self-starting permanent magnet synchronous motor electromagnetism base as described in CNCN201510649087.X specifications
This structure is as shown in figure 1, it includes：
--- rotor 200, is that its section is divided into 4 sectors of symmetrical 90 ° with two orthogonal symmetry axis 400
And each radial magnetizing is the 4 pole p-m rotors of N, S, N, S；
--- stator 100 is constituted by with 4 circular iron cores of salient pole 101 and winding 12；Winding 12 is each in 4 salient poles
Around a coil part with Insulating frame, then by around being 4 poles to being connected in series, and thus produce wearing for 4 poles when being powered
The main flux of air gap more between rotor；
--- gradual change is narrowed the width of air gap in the counterclockwise direction between each salient pole of stator core 101 and rotor 200；Therefore exist
Free state be no power and without outer gas stream and rotational structure it is good in the case of, rotor 200 is attracted by stator core, respectively
The geometrical axis of pole is the permanent magnet flux axis 700,800 for passing through air gap between rotor respectively with the geometry of adjacent stators salient pole
Axis is that to pass through the main flux axis 500,600 of air gap between rotor be reference, one is deflected in the counterclockwise direction less sharp
Angle Ω.The present embodiment designs the mechanical angle for 5 ° (10 ° of electrical angle).Change the ratio that the angle can be narrowed with gradual change, and shadow
Ring detent torque and efficiency.The design can avoid rotor in a free state from staying in its axis being overlapped with the axis of stator salient poles
And detent torque is zero so-called " dead point " position when making energization, the reluctance torque for being formed also helps turning in preventing from operating
Son does not produce torque and stalls when alternating current zero passage；But exactly the electromagnetic structure makes to produce reluctance torque during motor running
Vibration.
Embodiment of the present invention motor continues to use the basic structure of above-mentioned motor, and it compares CN201510649087.X explanations
The improvement of motor described in book is mainly：
--- the cylinder 201 that electrical pure iron is made is increased, it is tightly placed in former p-m rotor external cylindrical surface, sees Fig. 1 and Fig. 2
(can respectively compare the Figure of description 1 of CN201510649087.X).
Due to less demanding and be reduces cost, electrical pure iron is from the trade mark DT3 in national standard.Use the electrician
Pure iron material is drawn into internal diameter and corresponds to the cylindrical shape of former p-m rotor external diameter, and takes axially long with former p-m rotor identical
Degree, then former p-m rotor is penetrated in cylinder, reaches fixation while to p-m rotor end and axle sleeve injection molding, or with
Tight fit tolerance is directly fastened.
The wall thickness of cylinder takes 0.15~0.8mm.Generally thicker, electromagnetic damping effect is better and startability is slightly worse, and right
The useful space is utilized and slightly reduced.Can suitably be adjusted according to experiment, resultant effect.
Because electrical pure iron gets rusty easily, it is necessary to take appropriate rust preventing by prior art depending on use condition, including
To the inside and outside face of cylinder plating of cylinder or compound fine copper or thin layer of pure aluminiurn.The thin layer is except can also strengthen electromagnetic damping effect in addition to antirust
Really.Wherein, it is higher based on induced-current frequency when starting to cylinder inner cylinder face plating or compound fine copper or thin layer of pure aluminiurn, have
Beneficial to taking into account startability and electromagnetic damping.
Certainly, can also be changed to use 400 series ferritic stainless steels.
The control circuit and method of the water pump can still according to embodiment described in CN201510649087.X specifications.When electronic
When machine does not need directional-rotation, motor winding can also directly input AC power and work without electronic switching circuit.
Above-mentioned motor is 4 pole motors, or 2 pole motors, such as U-iron core single-phase permanent-magnet synchronous motor,
It can be seen that China Machine Press's version in 2009《Small-power permanent magnet motor principle, design and application》.
Claims (2)
1. a kind of single-phase self-starting permanent magnet synchronous motor, including：The stator and p-m rotor of same number of poles；The stator with turn
The width of air gap is narrowed in the circumferencial direction that each pole lower edge sets between son, thus in a free state, each pole axis line of rotor with
The axis of the pole of hithermost stator one is reference, and a sharp angle is deflected along the circumferencial direction of setting；It is characterized in that：It is described forever
The face of cylinder of magnet rotor is anchored in the cylinder that magnetically soft alloy is made.
2. according to motor described in claim 1, it is characterised in that：The magnetically soft alloy is electrical pure iron or ferrite stainless
Steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710137253.7A CN106849429A (en) | 2017-03-09 | 2017-03-09 | Single-phase self-starting permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710137253.7A CN106849429A (en) | 2017-03-09 | 2017-03-09 | Single-phase self-starting permanent magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106849429A true CN106849429A (en) | 2017-06-13 |
Family
ID=59143367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710137253.7A Pending CN106849429A (en) | 2017-03-09 | 2017-03-09 | Single-phase self-starting permanent magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106849429A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110707840A (en) * | 2018-07-10 | 2020-01-17 | 建准电机工业股份有限公司 | Single-phase motor |
| CN111725925A (en) * | 2020-08-04 | 2020-09-29 | 珠海格力电器股份有限公司 | Single-phase permanent magnet self-starting motor and electric equipment with same |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2452197Y (en) * | 2000-11-16 | 2001-10-03 | 沈阳工业大学 | Rare-earth permasyn motor with high constant-power speed regulation ratio |
| DE102007062010A1 (en) * | 2007-10-19 | 2009-04-23 | Kaltenbach & Voigt Gmbh | Rotor for electric motor, electric motor and dental handpiece |
| CN102013780A (en) * | 2009-09-07 | 2011-04-13 | 德昌电机(深圳)有限公司 | Miniature brushless motor |
| CN102545432A (en) * | 2011-12-31 | 2012-07-04 | 浙江大学 | Self-starting permanent magnet synchronous motor rotor adopting conductive sleeve |
| CN104806540A (en) * | 2015-04-06 | 2015-07-29 | 叶露微 | Small-power ventilation fan directly driven by permanent magnet motor |
| CN105186947A (en) * | 2015-10-07 | 2015-12-23 | 叶露微 | Directional rotation single-phase self-starting permanent-magnet synchronous motor |
| CN105490412A (en) * | 2014-08-06 | 2016-04-13 | 德昌电机(深圳)有限公司 | Motor rotor and brushless DC motor applying same |
| CN205283356U (en) * | 2015-12-28 | 2016-06-01 | 江苏中能金石机电设备有限公司 | Permanent magnet synchronous motor rotor |
| CN105811614A (en) * | 2016-03-17 | 2016-07-27 | 重庆大学 | Rotor structure for high speed permanent magnet synchronous machine |
| CN106230152A (en) * | 2016-09-26 | 2016-12-14 | 威灵（芜湖）电机制造有限公司 | Rotor core assembly, rotor and self-starting permanent magnet synchronous motor |
-
2017
- 2017-03-09 CN CN201710137253.7A patent/CN106849429A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2452197Y (en) * | 2000-11-16 | 2001-10-03 | 沈阳工业大学 | Rare-earth permasyn motor with high constant-power speed regulation ratio |
| DE102007062010A1 (en) * | 2007-10-19 | 2009-04-23 | Kaltenbach & Voigt Gmbh | Rotor for electric motor, electric motor and dental handpiece |
| CN102013780A (en) * | 2009-09-07 | 2011-04-13 | 德昌电机(深圳)有限公司 | Miniature brushless motor |
| CN102545432A (en) * | 2011-12-31 | 2012-07-04 | 浙江大学 | Self-starting permanent magnet synchronous motor rotor adopting conductive sleeve |
| CN105490412A (en) * | 2014-08-06 | 2016-04-13 | 德昌电机(深圳)有限公司 | Motor rotor and brushless DC motor applying same |
| CN104806540A (en) * | 2015-04-06 | 2015-07-29 | 叶露微 | Small-power ventilation fan directly driven by permanent magnet motor |
| CN105186947A (en) * | 2015-10-07 | 2015-12-23 | 叶露微 | Directional rotation single-phase self-starting permanent-magnet synchronous motor |
| CN205283356U (en) * | 2015-12-28 | 2016-06-01 | 江苏中能金石机电设备有限公司 | Permanent magnet synchronous motor rotor |
| CN105811614A (en) * | 2016-03-17 | 2016-07-27 | 重庆大学 | Rotor structure for high speed permanent magnet synchronous machine |
| CN106230152A (en) * | 2016-09-26 | 2016-12-14 | 威灵（芜湖）电机制造有限公司 | Rotor core assembly, rotor and self-starting permanent magnet synchronous motor |
Non-Patent Citations (2)
| Title |
|---|
| 李喜娇: "《加工工艺学》", 30 May 2009 * |
| 陈光等: "《新材料概论》", 30 April 2013 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110707840A (en) * | 2018-07-10 | 2020-01-17 | 建准电机工业股份有限公司 | Single-phase motor |
| CN111725925A (en) * | 2020-08-04 | 2020-09-29 | 珠海格力电器股份有限公司 | Single-phase permanent magnet self-starting motor and electric equipment with same |
| CN111725925B (en) * | 2020-08-04 | 2021-11-26 | 珠海格力电器股份有限公司 | Single-phase permanent magnet self-starting motor and electric equipment with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170613 |
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| RJ01 | Rejection of invention patent application after publication |