CN108599439A - Permanent-magnet synchronous submersible motor - Google Patents
Permanent-magnet synchronous submersible motor Download PDFInfo
- Publication number
- CN108599439A CN108599439A CN201810616913.4A CN201810616913A CN108599439A CN 108599439 A CN108599439 A CN 108599439A CN 201810616913 A CN201810616913 A CN 201810616913A CN 108599439 A CN108599439 A CN 108599439A
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- Prior art keywords
- rotor
- stator
- permanent
- slot
- submersible motor
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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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- 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
-
- 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
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The present invention provides a kind of permanent-magnet synchronous submersible motor, it is related to permanent-magnet synchronous submersible motor technical field, permanent-magnet synchronous submersible motor includes the stator core being mutually overrided to form by multiple stator punchings and the rotor core that is mutually overrided to form by multiple rotor punchings；Stator punching is equipped with the stator slot that quantity is odd number, arbitrary two phase coil being wound in stator slot in X phase coils, Y phase coils and Z phase coils；Rotor punching is equipped with rotor slot, and permanent magnet is inserted in rotor slot.The technical problem that Electric Submersible Motor Power factor in the prior art is low, electric efficiency is low and energy consumption is big is alleviated, the technology that latent oil magneto normally starts under scalar potential control is realized.
Description
Technical field
The present invention relates to permanent-magnet synchronous submersible motor technical fields, in particular to a kind of permanent-magnet synchronous submersible motor.
Background technology
Submersible motor is the engine of submersible electric pump, it drives the well liquid of oil-submersible centrifugal pump absorption underground.In the prior art,
Submersible motor belongs to AC asynchronous motor, and structure is essentially identical with common asynchronous moter, but in order to adapt to submersible electric pump
Special use environment, also its special structure, mainly by elongated fixed part (stator) and rotating part (rotor) group
At one elongated steel pipe of entire outer image is mainly made of outer tubular envelope, motor shaft and cable, diameter is in 90mm-
Within the scope of 160mm, according to watt level length about in 6m-12m, elongated electric machine structure is formed.
Existing Electric Submersible Motor Power factor is low, and motor will absorb a large amount of reactive current from power grid, cause power grid defeated
There are a large amount of reactive currents in transformer equipment and generating equipment, and then the quality factor of power grid is made to decline, has aggravated power grid and defeated change
The load of electric equipment and generating equipment, while reactive current is intended to consumption part in power grid, power transmission and transforming equipment and generating equipment
Electric energy causes electric power network efficiency to be lower, and affects efficiently using for electric energy；In addition, rotor also needs to exciting current, not only damage
Consuming electric power also will produce rotor copper loss, reduces electric efficiency, cannot satisfy the use demand.Meanwhile existing permanent-magnet submersible motor
It cannot achieve and directly initiated by V/F control frequency converters.
Invention content
The purpose of the present invention is to provide a kind of permanent-magnet synchronous submersible motor, to alleviate submersible motor work(in the prior art
Rate factor is low, electric efficiency is low and energy consumption is big, and the technology that the frequency converter that latent oil magneto is controlled with V/F can not directly initiate is asked
Topic.
The present invention provides a kind of permanent-magnet synchronous submersible motor, includes the stator iron being mutually overrided to form by multiple stator punchings
Core and the rotor core being mutually overrided to form by multiple rotor punchings；
The stator punching is equipped with the stator slot that quantity is odd number, and X phase coils, Y phase coils are wound in the stator slot
With arbitrary two phase coil in Z phase coils；
The rotor punching is equipped with rotor slot, and permanent magnet is inserted in the rotor slot.
Further；The stator slot is closed stator slot, and the inner wall of open circles is formed in the stator punching away from institute
The shortest distance for stating stator slot is 0.2mm-0.5mm.
Further；The stator slot is 15, and is circumferentially evenly distributed on the stator punching.
Further；The inner wall of formation open circles is 0.2mm away from the shortest distance of the stator slot in the stator punching.
Further；The stator slot is peariform slot.
Further；There are four the rotor slots and is strip, the straight line where the perpendicular bisector of the rotor slot long side
Intersect with the central axis of the rotor punching, four rotor slots are circumferentially evenly distributed on the rotor punching.
Further；The permanent magnet is that either the SmCo neodymium iron boron or SmCo are plugged in the rotor to neodymium iron boron
The center of slot.
Further；The both ends of the rotor core are installed with rotor block, and the thickness of the rotor block is 2mm-
3mm。
Further；The rotor block is stainless steel plate.
Further；The rotor core shares ten sections, and the adjacent rotor core is connected by alignment bearing, and ten sections turn
It is equipped with motor shaft in the cavity of sub- iron core composition.
Compared with the existing technology, permanent-magnet synchronous submersible motor provided by the invention has the beneficial effect that：
Permanent-magnet synchronous submersible motor provided by the invention, including stator core and rotor core, stator core is by multiple circles
The stator punching of shape is mutually overrided to form, and rotor core is mutually overrided to form by multiple circular rotor punchings, wherein setting is fixed
Stator slot number in sub- punching is odd number, and compared to the design that traditional stator slot is even number, which greatly suppresses latent
The harmonic effect of oily motor keeps motor gas-gap Distribution of Magnetic Field more uniform, improves the performance and power factor of submersible motor, realizes
The technology that latent oil magneto normally starts under scalar potential control.
In addition, compared to a phase coil is only wound in traditional each stator slot, the present invention can twine in stator slot
Arbitrary two phase coil being wound in X phase coils, Y phase coils and Z phase coils, substantially increases the utilization rate of motor material, is convenient for
Best pitch is selected, makes the rotating excitation field of submersible motor closer to sine wave, is conducive to the mechanical strength that radiates and increase,
So that submersible motor temperature under continue working is maintained in tolerance interval, improves the service life of submersible motor.
Finally, by being arranged permanent magnet in the rotor slot of rotor punching, rather than copper conducting bar, by traditional alternating current asynchronous
Motor is changed to permanent magnet synchronous motor, and the excitation field of submersible motor is made to be provided by permanent magnet, and rotor does not need exciting current, therefore
Motor does not have rotor copper loss, submersible motor efficiency to improve, and compared with asynchronous machine, arbitrary rotating speed point saves electric energy, especially exists
This advantage is especially apparent when rotating speed is relatively low；In addition, replacing rotor windings by permanent magnet so that the air gap of magneto
Magnetic field is greatly enhanced compared with induction machine, and the volume and weight of magneto can greatly be reduced compared with induction machine, and then is reduced
The consumption of making material, reduction manufacture cost, meet the needs of people.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is the left view structural representation of stator core in permanent-magnet synchronous submersible motor provided in an embodiment of the present invention；
Fig. 2 is the enlarged drawing A in Fig. 1；
Fig. 3 is the structural schematic diagram of rotor punching in permanent-magnet synchronous submersible motor provided in an embodiment of the present invention；
Fig. 4 is that the part-structure of rotor windings and motor shaft shows in permanent-magnet synchronous submersible motor provided in an embodiment of the present invention
It is intended to；
Fig. 5 be permanent-magnet synchronous submersible motor provided in an embodiment of the present invention under different name-plate voltages, according to different capacity
The efficiency curve of output；
Fig. 6 is that permanent-magnet synchronous submersible motor provided in an embodiment of the present invention obtains performance diagram after actual test.
Icon：1- stator cores；2- rotor cores；3- neodymium iron borons；4- epoxy resin；5- motor shafts；6- rightings
Bearing；11- stator punchings；21- rotor punchings；22- rotor blocks；111- stator slots；211- rotor slots.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for the description present invention and simplify description, do not indicate or imply the indicated device or element must have a particular orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for description purposes only, and is not understood to indicate or imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
As Figure 1-Figure 4, the embodiment of the present invention provides a kind of permanent-magnet synchronous submersible motor, including is rushed by multiple stators
The stator core 1 that piece 11 is mutually overrided to form and the rotor core 2 being mutually overrided to form by multiple rotor punchings 21；Stator punching
11 are equipped with the stator slot 111 that quantity is odd number, are wound in stator slot 111 arbitrary in X phase coils, Y phase coils and Z phase coils
Two phase coils；Rotor punching 21 is equipped with rotor slot 211, and permanent magnet is inserted in rotor slot 211.
Permanent-magnet synchronous submersible motor provided in an embodiment of the present invention, including stator core 1 and rotor core 2, stator core 1
Mutually be overrided to form by multiple circular stator punchings 11, rotor core 2 mutually laminated by multiple circular rotor punchings 21 and
At, wherein 111 number of stator slot on setting stator punching 11 is odd number, is setting for even number compared to traditional stator slot 111
Meter, the design greatly suppress the harmonic effect of submersible motor, keep motor gas-gap Distribution of Magnetic Field more uniform, improve submersible motor
Performance and power factor, realize latent oil magneto technology for normally starting under scalar potential control.
In addition, compared to a phase coil is only wound in traditional each stator slot 111, the present invention is in stator slot 111
Arbitrary two phase coil that can be wound in X phase coils, Y phase coils and Z phase coils, substantially increases the utilization of motor material
Rate makes the rotating excitation field of submersible motor closer to sine wave convenient for selecting best pitch, is conducive to the machine that radiates and increase
Tool intensity makes submersible motor temperature under continue working be maintained in tolerance interval, improves the service life of submersible motor.
Finally, by the way that permanent magnet, rather than copper conducting bar, by traditional friendship are arranged in the rotor slot 211 of rotor punching 21
Stream asynchronous machine is changed to permanent magnet synchronous motor, and the excitation field of submersible motor is made to be provided by permanent magnet, and rotor does not need excitation electricity
Stream, therefore motor does not have rotor copper loss, submersible motor efficiency to improve, compared with asynchronous machine, arbitrary rotating speed point saves electric energy,
Especially this advantage is especially apparent when rotating speed is relatively low；In addition, replacing rotor windings by permanent magnet so that magneto
Air-gap field greatly enhanced compared with induction machine, the volume and weight of magneto can greatly be reduced compared with induction machine, into
And reducing the consumption of making material, cost is manufactured in reduction, meets the needs of people.
Specifically, the submersible motor parameter of the present embodiment design is respectively：Rated voltage 2500V, rated speed are
3600rpm, rated power 200HP, nominal torque 390Nm, motor frequency conversion start.On the basis of above-mentioned parameter, by using
Above structure, compared to the submersible motor of existing same parameter, motor rated power factor improves, and reduces power factor compensation
Cost, power consumption can reduce by 26% or so, save the operation cost of power grid；Meanwhile the submersible motor in the present embodiment
Volume can reduce 50%, material economy 50%, and light-weight about 50%.
It also needs it is worth noting that, the stator punching 11 and rotor punching 21 that the present embodiment uses are with quality
The silicon steel sheet of energy, in order to ensure that submersible motor in the working strength of underground, wraps up the shell of stator core 1 by high-quality carbon structure
Steel is made, and then has enough intensity, can play the role of support and connection.
In addition, X phase coils, Y phase coils and Z phase coils can be mutually mixed winding, can also be arranged independently of each other, preferably
, the present embodiment setting X phase coils, Y phase coils and Z phase coils are mutual indepedent, and stator winding is using the double-deck lap winding.
Specifically, the present embodiment also the concrete structure of permanent-magnet synchronous submersible motor is done it is described in detail below.
First, as depicted in figs. 1 and 2, the present embodiment setting stator slot 111 is closed stator slot 111, stator punching 11
The inner wall of middle composition open circles is 0.2mm-0.5mm away from the shortest distance of the stator slot 111.
Stator slot 111 i.e. in the present embodiment is not provided with opening, and by complicated processing technology, makes stator slot 111
Minimum thickness between inner wall and the inner wall of stator punching 11 is 0.2mm-0.5mm, at this point, in conjunction with but stator slot 111 wind
Two-phase designs, and greatly reduces the harmonic wave inside submersible motor, reduces slot effect, improves the electromagnetic compatibility of submersible motor
Performance reduces mechanical oscillation, reduces noise, also improves the stability of submersible motor.
Specifically, the minimum thickness (hereinafter referred to as scrap (bridge)) between the inner wall and the inner wall of stator punching 11 of stator slot 111
Smaller, the mechanical oscillation that submersible motor generates when working are lower, and noise is smaller, and stability is also better, as the excellent of the present embodiment
Scheme is selected, as shown in Fig. 2, under the premise of can complete processing and manufacturing, the inner wall for forming open circles in stator punching 11 is set
The shortest distance away from stator slot 111 is 0.2mm.
Further, as shown in Figure 1, it is 15 to also set up stator slot 111, and circumferentially it is evenly distributed on stator punching 11
On.
Specifically, in the present embodiment, the outer diameter of setting stator punching 11 is about 100mm, and internal diameter is about 52mm, in the size
Under, 15 stator slots 111 design, and can further suppress the harmonic effect of motor, keep motor gas-gap Distribution of Magnetic Field more uniform,
Improve the performance and power factor of motor.
As the preferred embodiment of the present embodiment, it is peariform slot to also set up stator slot 111, so that the leakage field of submersible motor is more
It is small.
Specifically, two arc radius of the present embodiment setting peariform slot are respectively 4.2mm and 5.95mm, two centers of circle it
Between distance be 8.2mm, the straight line where two centers of circle intersects with the central axis of stator punching 11, and the smaller circular arc of radius leans on
Nearly stator punching 11 is centrally disposed.
It is noted that the present embodiment is also set at the inner wall of stator punching 11 there are two the first locating slot, rushed in stator
Second locating slot there are one being set at the outer wall of piece 11, wherein the first locating slot is in order in the mutual folded of multiple stator punchings 11
When molded, the positioning to stator punching 11；Second locating slot is then to facilitate assembly between stator core 1 and shell and fixed
Position.
Specifically, it is square groove that the first locating slot, which is arranged, in the present embodiment, length and width are 1.6mm, and the second locating slot is half
Circular trough, radius 1.575mm.
Further, as shown in figure 3, the present embodiment also sets up there are four rotor slots 211 and is strip, rotor slot 211
Straight line where the perpendicular bisector of long side intersects with the central axis of rotor punching 21, and four rotor slots 211 are circumferentially uniformly distributed
On rotor punching 21.
Wherein, the length that rotor slot 211 is used to place the region of permanent magnet is 24mm, width 4.5mm, and length and width are right
Answer the width and height of permanent magnet.
By the way that four permanent magnets are separately fixed at instead of copper conducting bar in four rotor slots 211, can be formed two pairs of poles N and
The poles S generate rotor-exciting, and rotor does not need exciting current, therefore motor does not have rotor copper loss, further increases electric efficiency.
Further, the present embodiment setting permanent magnet be neodymium iron boron 3 either SmCo neodymium iron boron 3 or SmCo be plugged in turn
The both ends of the center of pilot trench 211, rotor slot 211 are fixed with epoxy resin 4.
Wherein, neodymium iron boron 3 is one kind of magnet, containing a large amount of rear earth element nd and iron and boron, characteristic it is hard and
It is crisp.Since surface is easily by oxidation corrosion, neodymium iron boron 3 must carry out surface coated treatment.Neodymium iron boron 3 is used as rare earth permanent-magnetic material
One kind, have high magnetic energy product and coercivity and high-energy density；In addition, its also have it is cost-effective, have good machine
The advantages of tool characteristic.
The present embodiment provides magnetic field using neodymium iron boron 3 so that the air-gap field of magneto is further compared with induction machine
Enhancing, the volume and weight of magneto most can greatly be reduced compared with induction machine.
In addition, epoxy resin 4 refers to the high-molecular compound containing epoxy group in molecular structure, the asphalt mixtures modified by epoxy resin after solidification
Fat 4 has good physics, chemical property, it has excellent adhesive strength, dielectric to the surface of metal and nonmetallic materials
Functional, deformation retract rate is small, and product size stability is good, and hardness is high, and flexibility is preferable, steady to alkali and most of solvent
It is fixed, thus be widely used in national defence, each department of national economy, it pours into a mould, impregnate, the purposes such as lamination material, bonding agent, coating.
In the present embodiment, epoxy resin 4 prevents neodymium iron boron 3 as lamination material and bonding agent for fixing neodymium iron boron 3
It shakes and damages relative to rotor slot 211, ensure that the stabilization of 2 structure of rotor core.
Specifically, as shown in figure 4, in the present embodiment, the both ends of rotor core 2 are installed with rotor block 22, rotor block
22 thickness is 2mm-3mm.
Rotor punching 21 of the rotor block 22 respectively with both ends in rotor core 2 mutually laminates molding, existing to prevent leak-stopping magnetic
As.
As the preferred embodiment of the present embodiment, setting rotor block 22 is stainless steel plate.
Stainless steel plate is circular ring shape plate, and the parameters such as outer diameter and internal diameter are identical as the parameter of rotor punching 21.
Further, as shown in figure 4, the present embodiment, which also sets up rotor core 2, shares ten sections, adjacent rotor iron core 2 passes through
Alignment bearing 6 connects, and motor shaft 5 is equipped in the cavity of ten sections of rotor cores 2 composition.
Specifically, motor shaft 5 is made of high duty alloy, main function is to form one by being keyed rotor core 2
It is whole, and transmit the torque of the output of rotor core 2.The hollow structure of axis can be such that dynamo oil recycles wherein, to ensure motor
The effect of bearing lubrication and heat dissipation.
And alignment bearing 6 therein is then used to prevent elongate rotor operating from mutually having wiped centralizing function with stator.
When using above-mentioned preferred parameter and structure, submersible motor provided in this embodiment specifically has the advantage that：
1. as shown in figure 5, electric efficiency value improves, relative to the 80% of international most advanced level, this submersible motor efficiency value
About 95.1%.
2. power factor improves, the existing reference value of industry is 0.86 or so at present, this Electric Submersible Motor Power factor is reachable
0.93。
Specifically, as shown in fig. 6, in full load rate section, the power factor and efficiency of motor quickly risen 90%
More than, and maintained very high level.
3. volume becomes smaller, conventional motors are bulky, and common electric machine length at 10 meters or so, only have by this submersible motor length
About 4.6 meters.
4. weight becomes smaller, few with material, conventional motors manufacture consumptive material height, and this product can save material consumption nearly 50%.
5. accessible startup can be realized with the frequency converter of arbitrary control model, existing latent oil magneto technology, only
It can realize and realize that startup, the frequency converter that the present invention realizes V/F controls arbitrarily start by the frequency converter of vector controlled.Such as following table,
In testing, V/F controls, six square waves has successively been used to have adjusted and start synchronizing frequency and acceleration time, while will bear
Load has been loaded into name plate rating, all accessible startup.
Following table is to start to test, and frequency converter is controlled using V/F, six square wave inverter modes, is tested in different startups frequency
Load has been loaded into name plate rating, all accessible startups by rate, acceleration time.
| Initiation culture | Hertz | 3 | 5 | 7 | 10 | 10 |
| Acceleration time | Second | 20 | 20 | 20 | 20 | 15 |
| Setting speed | Hertz | 100 | 100 | 100 | 100 | 100 |
| Load | Kilowatt | 137 | 137 | 137 | 137 | 137 |
| Voltage | Volt | 2500 | 2500 | 2500 | 2500 | 2500 |
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of permanent-magnet synchronous submersible motor, which is characterized in that include the stator iron being mutually overrided to form by multiple stator punchings
Core and the rotor core being mutually overrided to form by multiple rotor punchings；
The stator punching is equipped with the stator slot that quantity is odd number, and X phase coils, Y phase coils and Z phases are wound in the stator slot
Arbitrary two phase coil in coil；
The rotor punching is equipped with rotor slot, and permanent magnet is inserted in the rotor slot.
2. permanent-magnet synchronous submersible motor according to claim 1, which is characterized in that the stator slot is closed stator
Slot, the inner wall of composition open circles is 0.2mm-0.5mm away from the shortest distance of the stator slot in the stator punching.
3. permanent-magnet synchronous submersible motor according to claim 2, which is characterized in that form open circles in the stator punching
The shortest distance of the inner wall away from the stator slot be 0.2mm.
4. permanent-magnet synchronous submersible motor according to claim 2, which is characterized in that the stator slot is 15, and around circle
It is evenly distributed in week on the stator punching.
5. permanent-magnet synchronous submersible motor according to claim 4, which is characterized in that the stator slot is peariform slot.
6. according to claim 1-5 any one of them permanent-magnet synchronous submersible motor, which is characterized in that the rotor slot has four
A and be strip, the straight line where the perpendicular bisector of the rotor slot long side intersects with the central axis of the rotor punching, and four
A rotor slot is circumferentially evenly distributed on the rotor punching.
7. permanent-magnet synchronous submersible motor according to claim 6, which is characterized in that the permanent magnet is neodymium iron boron or samarium
Cobalt, the neodymium iron boron or SmCo are plugged in the center of the rotor slot.
8. permanent-magnet synchronous submersible motor according to claim 7, which is characterized in that the both ends of the rotor core are installed with
The thickness of rotor block, the rotor block is 2mm-3mm.
9. permanent-magnet synchronous submersible motor according to claim 8, which is characterized in that the rotor block is stainless steel plate.
10. permanent-magnet synchronous submersible motor according to claim 9, which is characterized in that the rotor core shares ten sections, phase
The adjacent rotor core is connected by alignment bearing, and motor shaft is equipped in the cavity of ten sections of rotor cores composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810616913.4A CN108599439A (en) | 2018-06-14 | 2018-06-14 | Permanent-magnet synchronous submersible motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810616913.4A CN108599439A (en) | 2018-06-14 | 2018-06-14 | Permanent-magnet synchronous submersible motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108599439A true CN108599439A (en) | 2018-09-28 |
Family
ID=63627603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810616913.4A Withdrawn CN108599439A (en) | 2018-06-14 | 2018-06-14 | Permanent-magnet synchronous submersible motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108599439A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110649723A (en) * | 2019-09-24 | 2020-01-03 | 上海电气集团上海电机厂有限公司 | Closed slot structure of motor iron core |
| WO2022007898A1 (en) * | 2020-07-08 | 2022-01-13 | 浙江都美电气技术股份有限公司 | Submersible permanent magnet synchronous motor |
-
2018
- 2018-06-14 CN CN201810616913.4A patent/CN108599439A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110649723A (en) * | 2019-09-24 | 2020-01-03 | 上海电气集团上海电机厂有限公司 | Closed slot structure of motor iron core |
| WO2022007898A1 (en) * | 2020-07-08 | 2022-01-13 | 浙江都美电气技术股份有限公司 | Submersible permanent magnet synchronous motor |
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Application publication date: 20180928 |