CN208835970U - Single-phase permanent magnet motor - Google Patents
Single-phase permanent magnet motor Download PDFInfo
- Publication number
- CN208835970U CN208835970U CN201821271830.8U CN201821271830U CN208835970U CN 208835970 U CN208835970 U CN 208835970U CN 201821271830 U CN201821271830 U CN 201821271830U CN 208835970 U CN208835970 U CN 208835970U
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- China
- Prior art keywords
- air gap
- air
- permanent magnet
- gap
- section
- 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.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
-
- 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
- H02K1/12—Stationary parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/03—Machines characterised by aspects of the air-gap between rotor and stator
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
Abstract
The utility model relates to a kind of single-phase permanent magnet motor (1), it is constructed with air gap winding (21) in the air gap (3,4) between stator (10) and rotor (20), wherein the rotor (20) is equipped with the permanent magnet for constructing magnetic pole, it is characterized in that, the air gap (3,4) is circumferentially observed asymmetrically and/or is constructed using the air gap that vary.Single-phase permanent magnet motor according to the present utility model makes it possible reliably but to simply implement the starting at all rotor-positions all.
Description
Technical field
The utility model relates to a kind of motor with single-phase air gap winding.
Background technique
The utility model relates to rotating electric machines, and especially with the rotating electric machine of air gap winding, wherein stator coil is fixed
Ground is arranged in stator side.In the past, the rotating electric machine with air gap winding has become more and more popular.The master of such machine
Be characterized in that: stator coil is arranged in the space between stator core and rotor, that is to say, that in air gap.In addition to space
Except effective use, coil windings are arranged in had the further advantage that in air gap the magnetic flux density of stator coil tempestuously by
It improves and the power or ability to work of motor this whereby and machine is enhanced.In addition, needing in the motor less
Iron, so that iron loss becomes smaller.Because iron loss disproportionately increases with revolving speed, in these machines, efficiency is in height
It is enhanced under revolving speed.
In the case where rotating electric machine, coil windings are arranged in air gap and are particularly advantageous.However, with air gap around
The single-phase permanent magnet rotating electric machine of group, which has the drawback that, to be difficult to carry out independent starting after being powered to winding.
In order to cause starting and the continued access torque unrelated with rotor-position defined by this motor, need to make with electricity
The stable point for the torque that magnetic mode generates is moved relative to each other with self-locking torque, this is in practice usually by single-phase motor
Middle application such as under type is realized: implementing the stator with guide groove, winding is located in the guide groove.In order to guarantee to start, teeth portion is closed
Asymmetrically implement in its axis, that is to say, that air gap inwardly constructs non-constantly all.The cogging torque being consequently formed
Optimum position (self-locking position) is constructed, after winding is powered cutting and stopping of slowing down, rotor is maintained at the preferred position
It sets.At each position in these positions, energization winding all can produce torque, so that ensuring the starting of motor.The solution
The premise of scheme is slotted to stator, to shape teeth portion asymmetry.Due to being formed in teeth portion with revolving speed not
Proportionally increased iron loss, efficiency reduce at high speed.
Therefore, non-groove stator is used for high revolving speed, more and more thus to reduce iron loss.However, in slotless electricity
In the case where motivation, it is completely absent the teeth portion that may be asymmetrically carried out.
Thus it is known in the art that this motor is implemented with auxiliary winding or with the number of phases > 1.However,
This causes cost to improve and the manufacturing cost in terms of coil switching technique and power electronics is caused to be enhanced.
Utility model content
Therefore, the task that the utility model is based on is: the shortcomings that referring to before overcoming and further research and development have
The motor with permanent magnet of single-phase air gap winding, so that reliably but to simply implement the starting at all rotor-positions all
It is possibly realized.
The task is solved by combining according to following characteristics.
Single-phase permanent magnet motor according to the present utility model is with the air gap winding in the air gap between stator and rotor
Construct, wherein the rotor is equipped with the permanent magnet for constructing magnetic pole, the air gap circumferentially observe asymmetrically and/or
It is constructed using the air gap that vary.
Particularly, the asymmetry of the air gap is asymmetry circumferentially.
Particularly, the ladder that the asymmetry of the air gap circumferentially constructs on the stator by least two is come real
It is existing.
Particularly, the asymmetry of the air gap is realized in the following way: between the stator and the rotor
Air gap circumferentially at least in two air gap sections continuously or great-jump-forward be reduced to smaller second from corresponding first spacing between
Away from.
Particularly, there is ladder on the transition part of the air gap section, air-gap separation becomes in the transition department great-jump-forward
Change.
Particularly, there is transition part section on the transition part of the air gap section, on the transition part section, the air gap
Spacing continuously changes.
The air-gap separation continuously changes in the circumferential range from 1 ° to 4 °.
Particularly, the variation of the air-gap separation in the air gap section is realized in the following way: in corresponding gas
In gap section, the wall intensity of the stator correspondingly changes, wherein when air-gap separation increases the stator wall strength reduction,
And the wall intensity of the stator increases when air-gap separation reduces.
Particularly, circumferentially observe, be alternately connected with respectively with it is biggish however in the transition part section it is permanent
First air gap section of fixed air-gap separation and interstice section with the air-gap separation lesser however constant relative to this.
Particularly, the length of the air gap section is circumferentially observed isometric respectively.
The basic thought of the utility model is: the air gap of air gap winding is circumferentially observed asymmetrically to construct, thus
It can produce the torque for starting.For this purpose, the utility model unevenly implements non-groove stator on internal diameter, the slotless is fixed
Son is made of ferromagnetic ring.Routinely resulting asymmetry leads to cogging torque.Cogging torque turns with what is generated by winding
Square superposition and result cause: motor can produce positive torque in each rotor-position so that motor it is no auxiliary around
Independently start in the case where group or other measures from the position.
According to the utility model, implement that there is air gap winding in a kind of air gap between unslotted stator and rotor thus
Single-phase permanent magnet motor, wherein the rotor is equipped with the permanent magnet for constructing magnetic pole, and wherein the air gap is circumferentially observed
Asymmetrically and/or with the air gap that varies construct.
Provided in a preferred embodiment of the utility model: the asymmetry of air gap be asymmetry circumferentially and
Air gap or spacing between stator and rotor circumferentially change.
For this purpose, in a preferred embodiment, corresponding air gap section can be set, the air gap section is separately connected that
This.
In this way, in one embodiment, the asymmetric of air gap can be by least two on the wall of stator along week
It is realized to the ladder of construction.Whereby, on these ladders, change to air gap great-jump-forward.It, can depending on ladder height and air gap
Correspondingly to generate appropriately sized cogging torque.
It provides in another advantageous design scheme of the utility model, realizes the not right of air gap in the following way
Claim: the air gap between stator and rotor is circumferentially at least in two air gap sections continuously from corresponding first spacing (air gap ruler
It is very little) it is reduced to smaller second spacing (void dimension) and therefore the region of the air gap that is therefore respectively provided with reduction is circumferentially handed over
It alternately connects each other.In the simplest case, air gap has the section of this radian for being respectively provided with 180 ° of exactly two.
On the corresponding transition part of (be that is connected thereto) air gap section adjacent from an air gap section to its,
Ladder can be set on the inner wall of the stator, thus air-gap separation changes to great-jump-forward on the stator.But it is optional
The inner wall on ground, stator can also construct transition part section, on the transition part section, air-gap separation (therefore circular
In stepped profile) continuously change first and then preferably changes to great-jump-forward again.
It is further favourable that realizing the variation of the air-gap separation in corresponding air gap section in the following way:
In corresponding air gap section, the wall intensity of the stator of unslotted correspondingly changes, wherein the stator when air-gap separation increases
Wall strength reduction, and the wall intensity of stator increases when air-gap separation reduces.
It is also advantageous that circumferentially observe, respectively alternately, an air gap section with it is biggish however in the section
Constant air-gap separation is connected in the air gap section with the air-gap separation lesser however constant relative to this, this can lead to
The wall thickness of annular stator being correspondingly alternately carried out securely is crossed to realize.
In each embodiment, the length of corresponding air gap section is circumferentially observed preferably respectively isometric.
Single-phase permanent magnet motor according to the present utility model makes reliably but to simply implement in all rotors
Starting at position is all possibly realized.
Detailed description of the invention
Other advantageous expansion schemes of the utility model below with the preferred embodiment to the utility model
Description is further illustrated according to attached drawing together.
Wherein:
Fig. 1 show respectively with 1 north and south poles 2 pole embodiments the air gap asymmetrically constructed first
Embodiment；
Fig. 2 shows second of the air gap asymmetrically constructed in the 4 pole embodiments respectively with 2 north and south poles
Embodiment；
Fig. 3 shows the third in the air gap of the 2 pole embodiments respectively with 1 north and south poles asymmetrically constructed
Embodiment；
Fig. 4 show respectively with 1 north and south poles 2 pole embodiments the air gap asymmetrically constructed the 4th
Embodiment；
Fig. 5 show respectively with 1 north and south poles 2 pole embodiments the air gap asymmetrically constructed the 5th
Embodiment.
Specific embodiment
Below, the utility model is further described by according to illustrative embodiment referring to figs. 1 to 5, wherein phase
Same appended drawing reference shows identical structure and/or functional character.
In Fig. 1 to 5, it is schematically shown that the setting according to the utility model respectively of the air gap asymmetrically constructed
Meter.2 pole embodiments respectively with 1 north and south poles are respectively illustrated in Fig. 1 and 3 to 5, and are shown in FIG. 2 each
The 4 pole embodiments with 2 north and south poles.
For this purpose, having air gap in respectively illustrating the air gap 3,4 between annular stator 10 and rotor 20 in Fig. 1 to 5
The single-phase permanent magnet motor 1 of winding 21.
Rotor 20 is loaded with permanent magnet and is used to construct magnetic pole.In all embodiments, air gap 3,4 is circumferentially observed respectively
Asymmetrically change.
In the embodiment of Fig. 1 and 2, the asymmetry of air gap 3,4 passes through two (in Fig. 1) or four (in Fig. 2)
Air gap section 3A, 4A for being respectively provided with the air gap continuously changed circumferentially constructed is realized, wherein respectively from the first air gap section
The transition part of 3A to the interstice section 4A being connected thereto that closely lands on stator 10 by being respectively configured on inner wall 11
Ladder S realize.In corresponding air gap section 3A, 4A, air gap is from corresponding first spacing between stator 10 and rotor 20
D1 continuously changes to smaller second space D 2, wherein then air gap the position of ladder S again great-jump-forward change to spacing
D1, then continuously (circumferentially to observe) until next ladder S is reduced in space D 2 again.
The embodiment according to Fig. 1 is corresponded essentially to according to the embodiment of Fig. 4, wherein transition part is not great-jump-forward
Ground, but as seen from the figure as (out of, circumferential about 2% shorter range, that is in about 4 °
Radian in) continuous reduce ground to realize.
In the embodiment according to Fig. 3 and 5, the gas in corresponding air gap section 3A, 4A is realized in the following way
The variation of gap spacing: in corresponding air gap section 3A, 4A, the wall thickness of stator 10 correspondingly changes, wherein such a
In the 3A of region, the wall thickness of stator 10 is smaller, and the wall thickness in region 4A inner stator 10 is larger.Through this, circumferentially observe,
The first air gap section 3A for the air-gap separation D1 for having biggish however constant in the section is alternately obtained respectively and there is phase
The interstice section 4A of the air-gap separation D2 lesser however constant for this.
The utility model is not limited in preferred embodiment explained above in terms of its embodiment.More precisely
It says, multiple variant schemes are all conceivable, even if shown solution is in the feelings of substantially different embodiment
Also these variant schemes, such as combination of each feature from the embodiment mentioned before are used under condition.
Claims (10)
1. a kind of single-phase permanent magnet motor (1), with the air gap in the air gap (3,4) between stator (10) and rotor (20)
Winding (21) constructs, wherein the rotor (20) is equipped with the permanent magnet for constructing magnetic pole, which is characterized in that the air gap
(3,4) are circumferentially observed asymmetrically and/or are constructed using the air gap that vary.
2. single-phase permanent magnet motor (1) according to claim 1, which is characterized in that the asymmetry of the air gap (3,4)
It is asymmetry circumferentially.
3. single-phase permanent magnet motor (1) according to claim 1 or 2, which is characterized in that the air gap (3,4) is no
Symmetrically pass through at least two ladder (S) Lai Shixian circumferentially constructed on the stator (10).
4. single-phase permanent magnet motor (1) according to claim 1 or 2, which is characterized in that realize in the following way
The asymmetry of the air gap (3,4): the air gap between the stator (10) and the rotor (20) is circumferentially at least at two
In air gap section (3A, 4A) continuously or great-jump-forward be reduced to smaller second spacing (D2) from corresponding first spacing (D1).
5. single-phase permanent magnet motor (1) according to claim 4, which is characterized in that in the air gap section (3A, 4A)
Have on transition part ladder (S), air-gap separation changes in the transition department great-jump-forward.
6. single-phase permanent magnet motor (1) according to claim 4, which is characterized in that in the air gap section (3A, 4A)
There is transition part section (U) on transition part, on the transition part section, the air-gap separation continuously changes.
7. single-phase permanent magnet motor (1) according to claim 6, which is characterized in that the air-gap separation from 1 ° to
Continuously change in 4 ° of circumferential range.
8. single-phase permanent magnet motor (1) according to claim 4, which is characterized in that realize in the following way
The variation of air-gap separation in the air gap section (3A, 4A): in corresponding air gap section (3A, 4A), the stator (10)
Wall intensity correspondingly changes, wherein when air-gap separation increases the stator (10) wall strength reduction, and in air-gap separation
The wall intensity of the stator (10) increases when reduction.
9. single-phase permanent magnet motor (1) according to claim 6, which is characterized in that circumferentially observe, respectively alternately
It is connected with the first air gap section (3A) and tool with biggish however constant in transition part section air-gap separation (D1)
There is the interstice section (4A) of the air-gap separation lesser however constant relative to this (D2).
10. single-phase permanent magnet motor (1) according to claim 4, which is characterized in that the length of the air gap section is along week
It is isometric respectively to observation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018113422.3A DE102018113422A1 (en) | 2018-06-06 | 2018-06-06 | Engine with a single-prism air gap winding |
| DE102018113422.3 | 2018-06-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208835970U true CN208835970U (en) | 2019-05-07 |
Family
ID=66308693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821271830.8U Active CN208835970U (en) | 2018-06-06 | 2018-08-08 | Single-phase permanent magnet motor |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN208835970U (en) |
| DE (1) | DE102018113422A1 (en) |
| WO (1) | WO2019233976A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112003391A (en) * | 2020-08-20 | 2020-11-27 | 珠海格力电器股份有限公司 | Stator core, magnetic suspension bearing and motor |
| WO2020253462A1 (en) * | 2019-06-17 | 2020-12-24 | 广东肇庆爱龙威机电有限公司 | Motor |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5653567A (en) * | 1979-10-06 | 1981-05-13 | Secoh Giken Inc | Manufacture of brushless small dc motor |
| JPS5783149A (en) * | 1980-10-28 | 1982-05-24 | Derufuai:Kk | Motor fan |
| JPS607681U (en) * | 1983-06-27 | 1985-01-19 | 高橋 義照 | A cylindrical brushless motor with one position sensing element, one coil, and a two-pole magnetic rotor. |
| JPH0255563A (en) * | 1988-08-22 | 1990-02-23 | Shicoh Eng Co Ltd | Single phase brushless vibrating motor |
| JPH0255560A (en) * | 1988-08-22 | 1990-02-23 | Shicoh Eng Co Ltd | Single phase brushless motor |
| AU5503194A (en) * | 1993-02-22 | 1994-08-25 | General Electric Company | Single phase electronically commutated motor system and method |
| DE10149560A1 (en) * | 2001-10-08 | 2003-04-17 | Laing Oliver | Electric motor for pump unit, has stationary winding around rotor with sections in air gap between edges of short circuit ring at angle to rotation axis and back alternately until 360 degrees covered |
| HU0301907D0 (en) * | 2003-06-23 | 2003-08-28 | Kiss Pal | Single-phase induction motor with steppes air gap |
| JP2006211883A (en) * | 2005-01-30 | 2006-08-10 | Yoshimitsu Okawa | Permanent magnet single-phase motor having ring-shaped stator coil |
| CN101976895B (en) * | 2010-07-26 | 2012-09-05 | 深圳华任兴科技有限公司 | Motor with slotless amorphous iron alloy radial magnetic circuit and process method thereof |
| DE202016104307U1 (en) * | 2015-08-07 | 2016-11-24 | Johnson Electric S.A. | Motor, motor driver circuit and integrated circuit for driving a motor |
| CN106487132A (en) * | 2015-09-01 | 2017-03-08 | 德昌电机(深圳)有限公司 | Electric machine |
| DE102016118507A1 (en) * | 2015-09-30 | 2017-03-30 | Johnson Electric S.A. | Brushless motor |
| DE102016113436A1 (en) * | 2016-07-21 | 2018-01-25 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Stand of a rotary field machine |
-
2018
- 2018-06-06 DE DE102018113422.3A patent/DE102018113422A1/en active Pending
- 2018-08-08 CN CN201821271830.8U patent/CN208835970U/en active Active
-
2019
- 2019-06-04 WO PCT/EP2019/064409 patent/WO2019233976A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020253462A1 (en) * | 2019-06-17 | 2020-12-24 | 广东肇庆爱龙威机电有限公司 | Motor |
| CN112003391A (en) * | 2020-08-20 | 2020-11-27 | 珠海格力电器股份有限公司 | Stator core, magnetic suspension bearing and motor |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102018113422A1 (en) | 2019-12-12 |
| WO2019233976A1 (en) | 2019-12-12 |
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