CN208939797U - A kind of portable permanent synchronous motor - Google Patents
A kind of portable permanent synchronous motor Download PDFInfo
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- CN208939797U CN208939797U CN201821675757.0U CN201821675757U CN208939797U CN 208939797 U CN208939797 U CN 208939797U CN 201821675757 U CN201821675757 U CN 201821675757U CN 208939797 U CN208939797 U CN 208939797U
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- iron core
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 18
- 230000005291 magnetic effect Effects 0.000 claims abstract description 44
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000004804 winding Methods 0.000 claims abstract description 23
- 238000001816 cooling Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000003475 lamination Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 239000007787 solid Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 8
- 238000000926 separation method Methods 0.000 description 6
- 230000005405 multipole Effects 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011449 brick Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
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- Iron Core Of Rotating Electric Machines (AREA)
Abstract
A kind of portable permanent synchronous motor, including stator and rotor, the stator includes assembled piece type stator iron core and stator winding, the assembled piece type stator iron core is by multiple annular solids constituted around the equally distributed sub- iron core of rotor, stator gap is equipped between two adjacent sub- iron cores, every sub- iron core side opposite with rotor set there are two wire casing, part between two wire casings of same sub- iron core forms coiling tooth, part between the adjacent wire casing of two adjacent sub- iron cores forms uncoiled teeth, winds stator winding on the coiling tooth.The utility model uses assembled piece type stator iron core, not only simplifies electric machine structure, reduces transport, the installation and maintenance difficulty of motor, and can avoid motor phase fault, promotes the fault-tolerant ability of motor.For few slot multipolar dynamo, assembled piece type stator iron core can also improve winding coefficient and generate " poly- magnetic " effect, to improve the torque density and operational efficiency of motor.
Description
Technical field
The utility model relates to a kind of fault-tolerant abilitys by force, torque density electricity synchronous with the high portable permanent of operational efficiency
Machine belongs to magnetic-synchro technical field of generators.
Background technique
High-performance permanent magnet synchronous motor is high due to having many advantages, such as small in size, torque density and operational efficiency, in industrial work
Journey field has obtained more and more attention.With the appearance of novel permanent magnetic material in recent years and large-scale magneto manufacturing technology
Continuous development, the single-machine capacity of magneto is continuously increased.However in low-speed applications occasion, traditional integral type stator core
The shortcomings that integer slot Distributed Winding magneto, gradually highlights.The increasing that there is this motor more number of poles to make number of stator slots
Adding, increases the difficulty of design and processing, Distributed Winding end is longer in addition, while leading to it with higher copper consumption,
Also it will increase the copper loss when dosage and motor operation of phase insulation material.With the increase of conventional motors single-machine capacity, motor
Transport, assembly, maintenance difficulties can also gradually increase, while motor can be made to have bigger volume, so that motor is at runtime
Iron loss increase, reduce the operational efficiency of motor, it is therefore necessary to be improved.
Utility model content
The purpose of this utility model is that aiming at the disadvantages of the prior art, a kind of portable permanent synchronous motor is provided, with
Improve motor performance, improves the torque density and operational efficiency of motor.
Problem described in the utility model is realized with following technical proposals:
A kind of portable permanent synchronous motor includes stator and rotor in composition, and the stator includes assembled piece type stator iron
Core and stator winding, the assembled piece type stator iron core are by multiple annular solids constituted around the equally distributed sub- iron core of rotor two
Be equipped with stator gap between adjacent sub- iron core, every sub- iron core side opposite with rotor set there are two wire casing, same sub- iron core
Two wire casings between part form coiling tooth, the part between the adjacent wire casing of two adjacent sub- iron cores forms uncoiled
Tooth winds stator winding on the coiling tooth.
Above-mentioned portable permanent synchronous motor is equipped with water cooling in each stator gap of the assembled piece type stator iron core and dissipates
Heat pipe.
Above-mentioned portable permanent synchronous motor is embedded with multiple rotor magnetic poles, the rotor on the outer cylinder of the rotor
Magnetic pole is sheet, and multiple rotor magnetic poles are uniformly distributed around rotor.
Above-mentioned portable permanent synchronous motor, the water-cooling pipe is made of parallel water inlet pipe and outlet pipe, described
Water inlet pipe and outlet pipe are coiled pipe.
Above-mentioned portable permanent synchronous motor, the sub- iron core are cores pile in layers.
The utility model uses assembled piece type stator iron core, not only simplifies electric machine structure, reduces transport, the installation of motor
With maintenance difficulty, and can avoid motor phase fault, promote the fault-tolerant ability of motor.For few slot multipolar dynamo, spell
Piece type stator iron core can also improve winding coefficient and generate " poly- magnetic " effect, to improve the torque density and operation effect of motor
Rate.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawing.
Fig. 1 is the rotor and stator structure schematic diagram of the utility model；
Fig. 2 is the cross section and its parameter mark of the utility model；
Fig. 3 is assembled piece type stator iron core structural schematic diagram (not true to scale)；
Fig. 4 is winding coefficient with stator gap width (W0) change curve；
Fig. 5 a is 12 slot, 10 pole conventional monolithic empty load of motor distribution diagram of magnetic line of force；
Fig. 5 b is 12 slot, 10 pole assembled piece type stator iron core empty load of motor distribution diagram of magnetic line of force；
Fig. 5 c is 12 slot, 14 pole conventional monolithic empty load of motor distribution diagram of magnetic line of force；
Fig. 5 d is 12 slot, 14 pole assembled piece type stator iron core empty load of motor distribution diagram of magnetic line of force；
Fig. 6 a is the unloaded magnetic linkage comparison of wave shape figure of 12 slot 10 pole conventional monolithic motor and assembled piece type stator iron core motor；
Fig. 6 b is the unloaded magnetic linkage comparison of wave shape figure of 12 slot 14 pole conventional monolithic motor and assembled piece type stator iron core motor；
Fig. 7 is that water-cooling pipeline schematic diagram is arranged in motor stator gap.
Each label in figure are as follows: 1, rotor magnetic pole, 2, sub- iron core, 3, rotor, 4, wire casing, 5, stator gap, 6, water-cooling
Pipe, 6-1, water inlet pipe, 6-2, outlet pipe.
Specific embodiment
The utility model proposes a kind of portable permanent synchronous motor with " poly- magnetic " effect, which uses piece
Formula stator core, can be improved the torque density and operational efficiency of motor, at the same reach be readily transported motor, install, manufacture with
The purpose of maintenance.
The utility model provides a kind of novel permanent magnetic synchronous motor for few slot multipole, as shown in Figure 1, the motor is logical
The mode for crossing the insertion stator gap in uncoiled teeth, which completes, changes conventional monolithic fractional-slot concentratred winding motor stator
It makes, assembled piece type stator iron core and winding configuration are as shown in Figure 2.By taking 12 slot, 14 pole assembled piece type stator iron core motor as an example, keep around
Line tooth and its addendum width are constant, wherein coiling tooth width is 2t0, coiling tooth addendum width is ttip, inserted in uncoiled teeth
Entering width is W0Stator gap so that uncoiled teeth width be (2t0+W0), while keeping the addendum width of uncoiled teeth not
Become, is still ttip.I.e. improved motor has identical and is 2t compared with traditional integral type stator iron core motor0Coiling
Tooth width has identical and is ttipAddendum width, but uncoiled teeth width is by original 2t0Become improved (2t0+
W0).Motor described in the utility model uses embedded rotor magnetic pole, and rotor magnetic pole is sheet, is sequentially embedded outside rotor core
Surface, the pole embrace of magnetic pole is 0.7, while surface-mount type and built-in pole wheel can obtain same conclusions.
Electromagnetic principle:
For the facewidth stator structure motor such as conventional monolithic, the pitch factor k of nth harmonicp, distribution factor kd、
Winding coefficient kwIt can be calculated respectively with following formula:
kw=kp·kd#(3)
In formula, q is MgO-ZrO_2 brick；α angle (electrical angle) between slot；The pi/2 of τ=2 p is pole span；Y=2 π/NsBetween slot
Away from；P is rotor magnetic pole logarithm；NsFor number of stator slots.
For assembled piece type stator iron core motor, due to stator gap W0Presence have no effect on each phase coil in stator
In relative position, as shown in Fig. 2, and each phase adjacent windings electromotive force direction it is identical.Therefore assembled piece type stator iron core motor
With the breadth coefficient mutually same with integrated motor, i.e.,
kd=k 'd=1# (4)
In formula, kdFor the breadth coefficient of integral type motor；kd' be assembled piece type stator iron core motor breadth coefficient.
Fig. 3 is assembled piece type stator iron core structural schematic diagram, as seen from the figure, due to the presence of stator gap, so that motor
Separation is reduced compared to integrated motor, can specifically be obtained by following formula:
2yNew=2y- α0#(6)
Formula (5), formula (6) are substituted into formula (1) and can be obtained:
Wherein, α0For stator gap W0The mechanical angle shared by stator inner circle；yNewFor assembled piece type stator iron core motor
Separation；kp' be assembled piece type stator iron core motor pitch factor；RinIt is stator core internal bore radius.
By formula (1) and formula (7) it is found that the fundamental wave winding coefficient of assembled piece type stator iron core motor is with stator gap width W0
Variation tendency is as shown in Figure 4.As shown in Figure 4, for 12 slot, 14 pole motor, with the increase of stator gap width, motor
Separation and pole span can be gradually equal so that winding coefficient reaches maximum value (maximum value 1), this is because for 12
For 14 pole motor of slot, because its separation is greater than pole span, thus while the presence of stator gap can be such that the separation of motor reduces,
But the ratio y of separation and pole span is enabledNew/ τ increases, to improve the pitch factor of assembled piece type stator iron core motor.Hereafter, slot
Spacing with stator gap width increase (W0> 4.5mm) continue to reduce, and gradually it is less than pole span, so that winding coefficient is reaching
It is on a declining curve after to maximum value.
By taking 12 slot, 10 pole and 12 slot, 14 pole motor as an example, illustrate that multiple-grooved lacks pole and few slot multipole assembled piece type stator iron core respectively
Motor distinctive " poly- magnetic " and " scattered magnetic " effect.The no-load magnetic field of assembled piece type stator iron core motor is distributed such as Fig. 5 (a) -5 (d) institute
Show, in figure, rotor is in position when making A phase magnetic linkage maximum, i.e. field axis is overlapped place with tooth center.By Fig. 5 (a) -5
(d) it is found that the presence of stator gap makes the magnetic line of force of other phases for 12 slot, 10 pole assembled piece type stator iron core motor
It is difficult to enter A phase, this is because the magnetic line of force needs to first pass through stator gap, and the magnetic conductivity of air is far inferior to ferromagnetic material.This
Just directly result in the A phase magnetic linkage (φ of 12 slot, 10 pole assembled piece type stator iron core motor (shown in such as Fig. 5 (b))A) relative to one
Reduced for formula motor (shown in such as Fig. 5 (a)), meanwhile, C phase magnetic linkage (φC) be increased slightly, this is " scattered magnetic " phenomenon.Phase
Instead, for 12 slot, 14 pole assembled piece type stator iron core motor, pass through the magnetic field of comparison integrated motor (shown in such as Fig. 5 (c))
Distribution is it is found that its stator gap prevents the magnetic line of force of A phase to be scattered in other phases, so that 12 slot, 14 pole assembled piece type stator iron core electricity
The A phase magnetic linkage (φ of machine (shown in such as Fig. 5 (d))A) increased for integrated motor, and B phase magnetic linkage (φB)
Reduce, this is " poly- magnetic " phenomenon.
Shown in unloaded every phase magnetic linkage waveform such as Fig. 6 (a) -6 (b) of two kinds of stator structure motors.As seen from the figure, in different slots
Under the configuration of pole, the amplitude of the every phase magnetic linkage waveform of motor can change with the difference of stator structure.It is (more for 12 slot, 10 pole
Slot lacks pole) for motor, because of " scattered magnetic " effect, so that the unloaded magnetic linkage waveform of assembled piece type stator iron core motor compares integral type
It decreases for stator motor, as shown in Fig. 6 (a)；And for 12 slot, 14 pole (few slot multipole) motor, assembled piece type is fixed
The unloaded magnetic linkage of sub- iron core motor increases, and as shown in Fig. 6 (b), in addition to " poly- magnetic " effect, relatively higher winding coefficient is same
Sample plays positive effect.
It is new to what is proposed by calculating and finite element method by taking 12 slot, 14 pole fractional-slot concentratred winding magneto as an example
Type assembled piece type stator iron core is emulated, and promotion of the assembled piece type stator iron core to few slot multipolar dynamo winding coefficient is demonstrated.Cause
For " poly- magnetic " effect, so that the unloaded magnetic linkage of few slot multipole assembled piece type stator iron core motor also increased, therefore, assembled piece type is fixed
The application of sub- iron core can the substantive torque density and operational efficiency for promoting motor.Meanwhile assembled piece type stator iron core and single layer collection
The winding configuration of middle winding can greatly simplify the transport and installation of Wind turbines, avoid phase fault, improve the appearance of motor
Wrong ability.Water-cooling pipeline is arranged in motor stator gap, as shown in fig. 7, being difficult in casing when can take away motor operation
The heat to shed further increases the operational efficiency of motor, has good answer to the development of high-power offshore wind generators
Use prospect.
Claims (5)
1. a kind of portable permanent synchronous motor, characterized in that include stator and rotor (3) in composition, the stator includes spelling
Piece type stator iron core and stator winding, the assembled piece type stator iron core are the rings being made of multiple equally distributed sub- iron cores (2)
Body is equipped with stator gap (5) between two adjacent sub- iron cores (2), and every sub- iron core (2) side opposite with rotor (3) is equipped with
Two wire casings (4), the part between two wire casings (4) of same sub- iron core (2) form coiling tooth, two adjacent sub- iron cores (2)
Adjacent wire casing (4) between part form uncoiled teeth, wind stator winding on the coiling tooth.
2. a kind of portable permanent synchronous motor according to claim 1, characterized in that the assembled piece type stator iron core
Water-cooling pipe (6) are equipped in each stator gap (5).
3. a kind of portable permanent synchronous motor according to claim 1 or 2, characterized in that the column jacket of the rotor (3)
It is embedded with multiple rotor magnetic poles (1) on face, the rotor magnetic pole (1) is sheet, and multiple rotor magnetic poles (1) are uniform around rotor (3)
Distribution.
4. a kind of portable permanent synchronous motor according to claim 2, characterized in that the water-cooling pipe (6) by
Parallel water inlet pipe (6-1) and outlet pipe (6-2) are constituted, and the water inlet pipe (6-1) and outlet pipe (6-2) are coiled pipe.
5. a kind of portable permanent synchronous motor according to claim 4, characterized in that the sub- iron core (2) is lamination
Iron core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821675757.0U CN208939797U (en) | 2018-10-16 | 2018-10-16 | A kind of portable permanent synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821675757.0U CN208939797U (en) | 2018-10-16 | 2018-10-16 | A kind of portable permanent synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208939797U true CN208939797U (en) | 2019-06-04 |
Family
ID=66724788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821675757.0U Expired - Fee Related CN208939797U (en) | 2018-10-16 | 2018-10-16 | A kind of portable permanent synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208939797U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110797993A (en) * | 2019-11-28 | 2020-02-14 | 华北电力大学（保定） | Stator yoke segmented block type motor |
| GB2582941A (en) * | 2019-04-09 | 2020-10-14 | Centre National De La Reacherche Scient | A stator winding arrangement |
| WO2022246700A1 (en) * | 2021-05-24 | 2022-12-01 | 东南大学 | Modular motor having inter-phase magnetic isolation capability |
-
2018
- 2018-10-16 CN CN201821675757.0U patent/CN208939797U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2582941A (en) * | 2019-04-09 | 2020-10-14 | Centre National De La Reacherche Scient | A stator winding arrangement |
| GB2582941B (en) * | 2019-04-09 | 2023-08-02 | Centre Nat Rech Scient | A stator winding arrangement |
| CN110797993A (en) * | 2019-11-28 | 2020-02-14 | 华北电力大学（保定） | Stator yoke segmented block type motor |
| WO2022246700A1 (en) * | 2021-05-24 | 2022-12-01 | 东南大学 | Modular motor having inter-phase magnetic isolation capability |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190604 |