CN106230143B - A kind of switched reluctance machines - Google Patents
A kind of switched reluctance machines Download PDFInfo
- Publication number
- CN106230143B CN106230143B CN201610783848.5A CN201610783848A CN106230143B CN 106230143 B CN106230143 B CN 106230143B CN 201610783848 A CN201610783848 A CN 201610783848A CN 106230143 B CN106230143 B CN 106230143B
- Authority
- CN
- China
- Prior art keywords
- stator core
- stator
- switched reluctance
- winding
- cooling liquid
- 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.)
- Expired - Fee Related
Links
- 238000004804 winding Methods 0.000 claims abstract description 40
- 239000000110 cooling liquid Substances 0.000 claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 238000013016 damping Methods 0.000 claims abstract description 9
- 230000009467 reduction Effects 0.000 claims abstract description 9
- 230000000694 effects Effects 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000004806 packaging method and process Methods 0.000 claims description 2
- 238000009413 insulation Methods 0.000 abstract description 3
- 230000009471 action Effects 0.000 abstract description 2
- 238000009835 boiling Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000002791 soaking Methods 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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/145—Stator cores with salient poles having an annular coil, e.g. of the claw-pole type
-
- 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
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- H02K9/20—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil wherein the cooling medium vaporises within the machine casing
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Synchronous Machinery (AREA)
Abstract
The invention discloses a kind of switched reluctance machines, including stator structure, shaft, the rotor connecting with the shaft；The stator structure generally sealing structure, including stator core, the winding that is surrounded on the stator core periphery, cover in shell outside the stator core, and the connecting cylinder to form seal chamber is connect with the shell, the stator core and winding are surrounded in the seal chamber, and the evaporative cooling liquid that damping action power is generated to the vibration of the stator core and winding is packaged in the seal chamber.Using this structure, since stator core is the main component for issuing vibration and noise, and stator core is immersed in the liquid of insulation, the liquid forms great frictional resistance to any movement tendency of stator, also with regard to the vibration of damping vibration attenuation stator, in addition the propagation of sound can be also prevented, therefore vibration damping, noise reduction effect are obvious.
Description
The invention relates to a divisional application of a switched reluctance motor, wherein the original application number is 201410127817.5, the original application date is 2014, 03 and 31, and the original invention name is.
Technical Field
The invention relates to the technical field of motors, in particular to a switched reluctance motor.
Background
The electric automobile is driven by electric power to completely replace petroleum fuels, and has absolute advantages in the aspects of environmental protection, cleanness, energy conservation and the like. The driving motor of the electric automobile mainly comprises a direct current motor, an asynchronous motor, a permanent magnet brushless motor, a switched reluctance motor and the like. The switched reluctance motor becomes a powerful competitor of each driving system by the advantages of simple structure, low cost, strong applicability, wide speed regulation range and the like.
As shown in fig. 1, the diagram is a schematic diagram of a switched reluctance motor in the prior art. When the control switches S1 and S2 of the A phase winding 2 'current are closed, the A phase is electrified, meanwhile, the B phase and the C phase are not electrified, the A phase excitation generates a magnetic field, the magnetic flux of the motor is always closed along a path with the minimum magnetic resistance, and when the axis of the A phase magnetic pole is coincided with the axis of the magnetic pole a of the rotor 7', the magnetic resistance of the magnetic circuit is minimum, so that the twisted magnetic force lines generate tangential tension, the a-a 'is tried to be coincided with the A-A', and finally the rotation is stopped until the a-a 'is coincided with the A-A'. Subsequently, if the motor is required to continuously rotate, the phase B needs to be electrified, and the phase A and the phase C are simultaneously powered off, at the moment, the magnetic field in the motor is changed into a magnetic field taking the magnetic pole of the phase B as an axis, and the motor rotor 7 'continues to rotate until the magnetic field is completely overlapped with the phase B-B'. Then, the phase C is electrified, and simultaneously, the phase A and the phase B are powered off, at the moment, the magnetic field in the motor is changed into a magnetic field taking the magnetic pole of the phase C as the axis, and the motor rotor 7 'continues to rotate until the magnetic field is completely coincided with the phase C-C'. The above-mentioned cycle is repeated, and as long as the three-phase stator winding 2 ' is sequentially energized in the order of a-B-C-a …, the rotor 7 ' of the motor always rotates in the same direction around the center line of the rotating shaft 8 '.
It can be seen from the above working process that the electromagnetic torque generated by the switched reluctance motor is not stable like the electromagnetic torque of the conventional ac and dc motors, but is of a pulsating nature, and the corresponding magnetic pulling force has not only a tangential component but also a radial component, wherein the tangential component of the magnetic pulling force is used for pulling the motor to operate, and the motor operates unstably, generates deformation and vibration due to the pulsating nature thereof, and further generates serious noise. The radial component of the magnetic pull changes with the position of the rotor 7 ' and the current of the stator winding 2 ', which leads to deformation and vibration of the stator core 1 ' of the motor, and thus, more serious noise is generated.
In view of the above, it is desirable to further optimize the switched reluctance motor in the prior art to eliminate the vibration and noise generated by the stator core and enhance the working stability of the switched reluctance motor.
Disclosure of Invention
The invention aims to provide a switched reluctance motor, wherein a stator structure of the motor is an integral sealing structure, a stator core and a winding are enclosed in a sealing cavity, and evaporative cooling liquid is encapsulated in the sealing cavity, so that the vibration and noise can be reduced, and the working stability of the switched reluctance motor is enhanced.
In order to solve the technical problem, the invention provides a switched reluctance motor which comprises a stator structure, a rotating shaft and a rotor connected with the rotating shaft; the whole seal structure that is of stator structure, including stator core, surround in the winding of stator core periphery, cover in the outer casing of stator core, and with the connecting cylinder that forms sealed chamber is connected to the casing, stator core and winding surround in sealed chamber, it is right to encapsulate in the sealed chamber the evaporative cooling liquid that produces damping effort to the vibration of stator core and winding.
By adopting the structure, because the evaporative cooling liquid is low-boiling point, high-insulation and non-combustible evaporative cooling liquid, when the motor runs, a large amount of heat is generated by the winding, the stator core and other structural components due to various losses, so that the temperature of the evaporative cooling liquid filled around the winding, the stator core and other structural components is raised until the saturated temperature of the liquid medium corresponding to the pressure in the cavity is reached, the evaporative cooling liquid starts to boil, further the evaporative cooling liquid absorbs heat and is vaporized to be in a gas-liquid two-phase state, the heating components are fully cooled, and the temperature of the boiling working medium is basically distributed near the saturated temperature point during boiling heat exchange, so that the temperature distribution of each stator part soaked by the medium is relatively uniform, and particularly the end part of the. The density of the vapor cooling liquid in a gas-liquid two-phase state is less than that of the liquid medium, buoyancy is generated to rise upwards to meet the condenser at the top, heat is transferred to condensed water in the vapor cooling liquid, and the condensed water is condensed into liquid and dripped back to the original place, so that self-circulation and noiseless evaporative cooling at normal temperature is realized. Most importantly, because the stator core is the main component which emits vibration and noise, and the stator core is soaked in the insulating liquid, the liquid forms great friction resistance to any movement trend of the stator, so that the vibration of the stator is damped and attenuated, and sound transmission is also prevented, and the vibration reduction and noise reduction effects are obvious.
Preferably, the connecting cylinder is cylindrical, the connecting cylinder is integrally arranged between the rotor and the stator core, and two axial ends of the connecting cylinder are connected with the shell.
Preferably, the connecting cylinder axially connects the stator core and the housing, the winding and the housing, and the connecting cylinder encloses the winding from the inside, and the inner wall of the sealed cavity includes the inner wall of the stator core and the inner wall of the connecting cylinder.
Preferably, the connecting cylinder comprises two identical half cylinder structures, each half cylinder structure comprises arc-shaped connecting plates with the same number as that of the stator cores, and each connecting plate comprises a press-fitting section and a connecting section; the press-fitting sections are press-fitted on the inner sides of the windings, and every two adjacent press-fitting sections form a groove for accommodating the stator core; the connecting sections are connected end to form an annular structure, the annular structure is connected with the shell, and the press-fitting sections of the two half-cylinder structures are in butt joint to form the connecting cylinder.
Preferably, in the cross section of the switched reluctance motor, the inner surface of the press-fitting section and the inner surface of the stator core are located on the same arc with the center of the rotating shaft of the switched reluctance motor as the center of a circle.
Preferably, the connecting sections of every two adjacent connecting plates are butted end to form the annular structure, and each connecting plate is connected with the shell.
Preferably, the connecting sections of every two adjacent connecting plates are overlapped end to form the annular structure, and every two connecting plates are connected with the shell at the overlapped part.
Preferably, the two ends of the connecting sections, which are alternately arranged in the annular structure, are provided with bent parts, and the bent parts are overlapped with the adjacent connecting sections.
Preferably, the connecting plate is provided with a first positioning hole, the housing comprises an end cover and a fixed cylinder arranged on one side of the end cover, the fixed cylinder is provided with a second positioning hole corresponding to the first positioning hole, and the fixed cylinder and the annular structure are connected through a threaded fastener inserted in the first positioning hole and the second positioning hole.
Drawings
FIG. 1 is a schematic diagram of a switched reluctance motor;
fig. 2 is a schematic view of a stator sealing structure of an embodiment of a switched reluctance motor provided in the present invention;
FIGS. 3 and 4 are a front sectional view and a side sectional view of the sealing cartridge of FIG. 2;
fig. 5 is a schematic view of a stator sealing structure of another embodiment of a switched reluctance motor provided in the present invention;
FIG. 6 is a cross-sectional view of the stator seal structure shown in FIG. 5;
FIG. 7 is a perspective view of one embodiment of a half-cartridge configuration of the connector cartridge of FIG. 6;
FIG. 8 is a schematic structural view of the connection plate of FIG. 7;
FIG. 9 is a perspective view of another embodiment of a half-cartridge configuration of the connector cartridge of FIG. 6;
fig. 10 and 11 are front and side views of a housing of a switched reluctance motor according to the present invention.
Wherein, the corresponding relationship between the reference numbers and the component names in fig. 1 is:
a stator core 1'; a winding 2'; a housing 3'; a rotor 7'; a rotating shaft 8';
the correspondence between reference numerals and part names in fig. 2 to 11 is:
a stator core 1;
a winding 2;
a housing 3; an end cap 31; a fixed cylinder 32; the second positioning hole 321;
a connecting cylinder 4; a half-cylinder structure 4 a; a connecting plate 41; a press-fitting section 411; a connecting section 412; a first positioning hole 4121; a bent portion 4122; the groove 42;
a sealed cavity 5; evaporating the cooling liquid 6; a rotor 7; a rotating shaft 8; a condenser 9.
Detailed Description
The core of the invention is to provide a switched reluctance motor, the stator structure of the motor is an integral sealing structure, a stator core and a winding are enclosed in a sealing cavity, and evaporative cooling liquid is encapsulated in the sealing cavity, the evaporative cooling liquid generates a friction damping effect on the vibration of a stator, so that the vibration and noise can be reduced, and the working stability of the switched reluctance motor is enhanced.
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
It should be noted that the term "axial" as used herein refers to a direction in which the axis of the main shaft to which the rotor is attached extends, i.e., a direction extending left and right in fig. 5; the direction word "outer" refers to a direction radially outwardly spreading from the central axis of the rotating shaft of the motor, i.e., a direction radially outwardly spreading from the center of a circle in fig. 6; the opposite is true of the directional word "inner". It should be understood that these terms of orientation are set forth with reference to the drawings in the specification and their presence should not be construed to affect the scope of the present invention.
Referring to fig. 2, fig. 2 is a schematic view of a stator sealing structure of a switched reluctance motor according to an embodiment of the present invention.
In one embodiment, as shown in fig. 2, the present invention provides a switched reluctance motor comprising a stator structure, a shaft 8, and a rotor 7 connected to the shaft 8. The whole seal structure that is of stator structure, including stator core 1, surround in stator core 1 periphery winding 2, cover in stator core 1 outer casing 3 to and be connected the connecting cylinder 4 that forms sealed chamber with casing 3, stator core 1 and winding 2 surround in sealed chamber, and sealed intracavity is packaged with right stator core 1 and winding 2's vibration produces the evaporative cooling liquid 6 of damping effort.
Since the above-described switched reluctance motor generates a pulsating electromagnetic wave, such a radial magnetic attraction force is minimum when the teeth of the stator core 1 are opposed to the slots of the rotor 7, and is maximum when the teeth of the stator core 1 are opposed to the teeth of the rotor 7. The stator is of a shell structure, so that the vibration of regular compression and expansion caused by the action of radial pulsating magnetic attraction force cannot be avoided, and the vibration emits noise outwards through the shell, so that the stator structure is a main source of noise of the switched reluctance motor.
After the structure is adopted, because the evaporative cooling liquid is the evaporative cooling liquid 6 with low boiling point, high insulation and non-combustion, when the motor runs, the winding 2, the stator core 1 and other structural components generate a large amount of heat due to various losses, so that the temperature of the evaporative cooling liquid 6 filled around the winding is raised until reaching the saturation temperature of the liquid medium corresponding to the pressure in the cavity, the evaporative cooling liquid starts to boil, and further absorbs heat and vaporizes to form a gas-liquid two-phase state, so that heating components are fully cooled, and the temperature of a boiling working medium is basically distributed near the saturation temperature point during boiling heat exchange, so that the temperature distribution of each stator part soaked by the medium is relatively uniform, and particularly, the end part of the stator has no local overheating point. The density of the vapor cooling liquid in a gas-liquid two-phase state is less than that of the liquid medium, buoyancy is generated to rise upwards to meet the condenser 9 at the top, heat is transferred to condensed water in the vapor cooling liquid, and the condensed water is condensed into liquid and dripped back to the original place, so that self-circulation and noiseless evaporative cooling at normal temperature is realized.
Most importantly, the stator core is a main component which emits vibration and noise, and is soaked in insulating liquid, the distribution condition of electromagnetic force is obtained through magnetic field analysis, then vibration calculation in the whole structure of the stator is carried out, and the vibration calculation is carried out by using an electromechanical analogy method, so that the vibration and noise can be obtained
The vibration speed of the stator core and the motor shell is as follows:
the amplitude of the vibratory displacement is:
in the formula: pnIs an equivalent concentration force, rm1、rm2The viscous damping coefficients of the core and the housing, omega the angular frequency of vibration, K1、K2Respectively, the stiffness of the core and the housing, m1、m2Respectively the mass of the core and the housing.
After the evaporative cooling medium soaks the whole stator, the viscous damping coefficient r in the formulas (1) and (2) is greatly increasedm1And rm2The method is equivalent to obviously reducing the vibration speed and the vibration amplitude, and practice proves that when the rated operation capacity of the motor is 2500KW, the noise is less than 100db and is reduced by more than 20% compared with the noise of the asynchronous motor with the same type of conventional structure. Moreover, after the motor adopts a soaking type evaporative cooling stator mode, the motor has the best cooling effect, the volume of the motor is reduced by one third compared with the conventional structure of the same type, and the output power is also obviously improved, so that the invention aim of low vibration noise is fulfilled.
Therefore, after the stator sealing structure is adopted, the evaporative cooling liquid can form great friction resistance to any movement trend of the stator on the basis of cooling, so that the vibration of the stator is damped and attenuated, and in addition, the sound transmission is also prevented, so that the vibration reduction and noise reduction effects are obvious.
In a first embodiment, as shown in fig. 3 and 4, fig. 3 and 4 are a front sectional view and a side sectional view of the sealing cylinder in fig. 2, respectively, the connecting cylinder 4 may be a cylindrical shape, the connecting cylinder 4 is integrally provided between the rotor 7 and the stator core 1, and both axial ends of the connecting cylinder 4 are connected to the housing 3.
Like this, during the installation, only need to follow one side with cylinder connecting cylinder 4 and directly insert into the clearance between stator core 1 and the rotor 7, then be connected the both ends and the casing 3 of connecting cylinder 4, this connecting cylinder 4 can form sealed chamber with casing 3 for stator structure has simple structure, and processing manufacturing is convenient characteristics. This construction is premised on the gap between the stator core 1 and the rotor 7 being large enough to accommodate the cylindrical connecting cylinder.
Referring to fig. 5 and 6, fig. 5 is a schematic view illustrating a stator sealing structure of a switched reluctance motor according to the present invention; fig. 6 is a cross-sectional view of the stator seal structure shown in fig. 5.
In a second embodiment, as shown in fig. 5 and 6, the connecting cylinder 4 axially connects the stator core 1 and the housing 3, the winding 2 and the housing 3, the connecting cylinder 4 encloses the winding 2 from the inside, and the inner wall of the sealed cavity 5 includes the inner wall of the stator core 1 and the inner wall of the connecting cylinder 4.
With this structure, the connecting cylinder 4 connects the axial space between the stator core 1 and the housing 3, the axial space between the winding 2 and the housing 3, and the inner wall of the sealed chamber 5 includes the inner wall of the stator core 1 and the inner wall of the connecting cylinder 4, and therefore, the inner wall of the stator core 1 is not encapsulated, so that the inner wall of the stator core 1 serves as a part of the inner wall of the sealed chamber 5. Compared with the first embodiment, the gap between the inner wall of the stator core 1 and the outer surface of the rotor 7 is not occupied, and a small gap (generally not more than 0.4mm) can still be maintained between the inner surface of the stator core 1 and the outer surface of the rotor 7. Therefore, the stator sealing structure can not only play a role in vibration reduction and noise reduction, but also avoid the increase of magnetic leakage and ensure the working stability of the switched reluctance motor.
Referring to fig. 7 and 8, fig. 7 is a perspective view of one embodiment of the connector barrel 4 of fig. 6; fig. 8 is a schematic structural view of the connecting plate 41 in fig. 7.
In a more specific aspect, as shown in fig. 7 and 8, the connecting cylinder 4 includes two identical half cylinder structures 4a, each half cylinder structure 4a includes arc-shaped connecting plates 41 having the same number as that of the stator cores 1, and each connecting plate 41 includes a press-fitting section 411 and a connecting section 412; the press-fitting sections 411 are press-fitted to the inner side of the winding 2, and every two adjacent press-fitting sections 411 form a groove 42 for accommodating the stator core 1; a plurality of connecting segments 412 are connected end to form an annular structure which is connected to the housing 3, and the press-fitting segments 411 of the two half-cylinder structures 4a are butted to form the connecting cylinder 4.
By adopting the structure, in the installation process, the two half-cylinder structures 4a are respectively inserted from the two ends of the stator core 1 to the middle part along the axial direction, so that the press-fitting section 411 of each arc-shaped connecting plate 41 is pressed on the inner side of the winding 2, the two half-cylinder structures 4a are butted to form the connecting cylinder 4, then the connecting section 412 of the connecting plate 41 is connected with the shell 3, and finally the encapsulation of the stator sealing structure is completed.
In this way, the press-fitting sections 411 of the arc-shaped connecting plate 41 function to seal the winding 2, the groove 42 formed between every two adjacent press-fitting sections 411 is used for accommodating the stator core 1, and the connecting cylinder 4 formed by connecting the connecting sections 412 of the arc-shaped connecting plate 41 is arranged in the axial space between the end of the stator core 1 and the housing 3, and between the winding 2 and the housing 3, so as to function as axial connection. The connecting cylinder 4 with the structure can simply and conveniently realize the axial connection of the stator core 1 and the shell 3 and the axial connection of the winding 2 and the shell 3.
The connecting cylinder 4 is not limited to the two half-cylinder structure, and may be an integrated structure, and the connecting cylinder 4 may be inserted from one side of the stator core 1 during installation.
In a further scheme, as shown in fig. 6, in the cross section of the switched reluctance motor, the inner surface of the press-fitting section 411 and the inner surface of the stator core 1 are located on the same arc with the center of the rotating shaft 8 of the switched reluctance motor as the center of a circle.
Because the press-fitting section 411 of the connecting plate 41 and the inner surface of the stator core 1 jointly form the inner surface of the sealed cavity 5, by adopting the structure, the distance from the inner wall of the whole sealed cavity 5 to the center of the rotating shaft 8 is the same, the subsequent packaging work is facilitated, the structure of the switched reluctance motor is symmetrical, and the vibration and the noise are further reduced. This structure enables the volume inside the sealed cavity 5 to be maximized so as to accommodate more of the evaporative coolant 6, further reducing the vibration and noise of the switched reluctance motor, as compared with the sealed stator structure in which the press-fitting section 411 is provided outside the inner surface of the stator core 1.
The specific connection mode of the connecting cylinder 4 can be further set.
In one embodiment, the connecting sections 412 of two adjacent connecting plates 41 are butted end to form a ring structure, and each connecting plate 41 is connected with the shell 3.
By adopting the structure, the connecting cylinder 4 has simple and symmetrical structure, and the mounting and dismounting operations of the connecting plates 41 are convenient.
It is conceivable that the above-described connector 4 is not limited to the above-described structure.
In another embodiment, as shown in fig. 9, fig. 9 is a perspective view of another embodiment of the connector barrel 4 of fig. 6, the connecting segments 412 of each two adjacent connecting plates 41 overlap end to form a ring-shaped structure, and each two connecting plates 41 are connected with the housing 3 at the overlapping portion. With this structure, the housing 3 is connected to the plurality of connection plates 41 at the same time, and every two adjacent connection plates 41 are also connected to each other, so that the reliability of the connection between the connector barrel 4 and the housing 3 can be enhanced.
In a specific embodiment, as shown in fig. 9, two ends of the connecting segments 412 (for example, the first, third, and five of the six connecting plates 41) arranged at intervals are provided with outward bent portions 4122, the remaining connecting plates 41 (for example, the second, fourth, and six of the six connecting plates 41) arranged at intervals are normally arranged, and the bent portions 4122 are overlapped with the adjacent connecting segments 412.
It is conceivable that the two adjacent connecting plates 41 are overlapped, but the manner is not limited to this, for example, one end of the connecting section 412 of each arc-shaped connecting plate 41 may be provided with the bent portion 4122, and the other end may be normally arranged, so that one end of one connecting plate 41 having the bent portion 4122 overlaps the other end of the other connecting plate 41 not provided with the bent portion, so as to form an end-to-end overlap of the two connecting plates 41.
The above-mentioned specific connection mode of the connecting cylinder 4 and the housing 3 may be further provided.
In another embodiment, as shown in fig. 10 and 11, fig. 10 and 11 are front and side views of a housing of a switched reluctance motor according to the present invention, the connecting plate 41 may be provided with a first positioning hole 4121, the housing 3 includes an end cap 31 and a fixed cylinder 32 disposed at one side of the end cap 31, the fixed cylinder 32 is provided with a second positioning hole 321 corresponding to the first positioning hole 4121, and the fixed cylinder 32 and the ring structure are connected by a threaded fastener inserted into the first positioning hole 4121 and the second positioning hole 321.
By adopting the structure, the connection between the annular structure and the connecting cylinder 4 of the shell 3 can be simply and conveniently realized, and the connection reliability of the annular structure and the connecting cylinder is stronger. It is contemplated that the housing 3 and ring structure are not limited to being connected by threaded fasteners, and may be connected in other ways, such as by providing mating annular grooves in the ring structure in the retaining cylinder 32 of the housing 3. After one side of each connecting plate 41 of the annular structure is pressed on the inner side of the winding 2 and the other side forms the annular structure, the annular structure can be in interference fit with the annular groove, and the stable connection between the annular structure and the annular groove can also be realized.
The switched reluctance motor provided by the present invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (7)
1. A switched reluctance motor comprises a stator structure, a rotating shaft (8) and a rotor (7) connected with the rotating shaft (8), and is characterized in that the stator structure is of an integral sealing structure, evaporative cooling liquid (6) is packaged in a sealing cavity (5) formed by the stator structure after the stator structure is packaged, and the evaporative cooling liquid (6) generates a friction damping effect on the vibration of the stator structure to enhance the working stability of the switched reluctance motor; wherein,
the stator structure comprises a stator core (1), a winding (2) surrounding the periphery of the stator core (1), a shell (3) covering the stator core (1), and a connecting cylinder (4) connected with the shell (3);
the connecting cylinder (4) comprises two identical half cylinder structures (4a), each half cylinder structure (4a) comprises arc-shaped connecting plates (41) with the same number as that of the stator cores (1), each connecting plate (41) comprises a press-fitting section (411) and a connecting section (412),
the two half-cylinder structures (4a) are inserted from two ends of the stator core (1) to the middle part along the axial direction respectively, so that the press-fitting section (411) of each arc-shaped connecting plate (41) is pressed on the inner side of the winding (2), the two half-cylinder structures (4a) are butted to form the connecting cylinder (4), and then the connecting section (412) of the connecting plate (41) is connected with the shell (3) to complete the packaging of the stator structure.
2. The switched reluctance machine according to claim 1, wherein the stator structure comprises a stator core (1), a winding (2) surrounding the stator core (1), a housing (3) covering the stator core (1), and a connecting cylinder (4) connected to the housing (3),
the connecting cylinder (4) is directly inserted into a gap between the stator core (1) and the rotor (7) from one side, and two axial ends of the connecting cylinder (4) are connected with the shell (3) to form the sealed cavity (5).
3. The switched reluctance machine according to claim 1, wherein the stator structure comprises a stator core (1), a winding (2) surrounding the outer circumference of the stator core (1), a housing (3) covering the stator core (1), and a connecting cylinder (4),
connecting cylinder (4) axial connection stator core (1) with casing (3) winding (2) with casing (3), just connecting cylinder (4) are sealed from the inboard winding (2), the inner wall of sealed chamber (5) includes the inner wall of stator core (1) with the inner wall of connecting cylinder (4).
4. A switched reluctance machine according to claim 2 or 3, wherein a gap of not more than 0.4mm is maintained between the inner surface of the stator core (1) and the outer surface of the rotor (7).
5. The switched reluctance machine according to claim 4, wherein the stator core (1) and the windings (2) are enclosed in the sealed cavity (5), and wherein the evaporative cooling liquid (6) encapsulated in the sealed cavity (5) damps the vibrations of the stator core (1) and the windings (2) to achieve vibration and noise reduction of the stator structure.
6. Switched reluctance machine according to claim 5, wherein said switched reluctance machine immerses said stator structure in said evaporative cooling liquid (6).
7. A switched reluctance machine according to claim 2 or 3, wherein the evaporative cooling liquid (6) damps and reduces noise of the stator structure by:
when the motor runs, the heat generated by the heating component raises the temperature of the evaporative cooling liquid (6) filled around the heating component to the saturation temperature of the liquid medium corresponding to the pressure in the cavity, and then the evaporative cooling liquid (6) absorbs heat and vaporizes to be in a gas-liquid two-phase state, so that the heating component is cooled, the density of the vapor cooling liquid (6) in the gas-liquid two-phase state is less than that of the liquid medium, the vapor cooling liquid generates buoyancy and floats upwards to meet the condenser (9), the heat is transferred to condensed water in the vapor cooling liquid and then is condensed into liquid and then dripped back to the original position, and self-circulation and noiseless evaporative cooling at normal temperature is realized, and the vibration and noise reduction of the stator structure is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610783848.5A CN106230143B (en) | 2014-03-31 | 2014-03-31 | A kind of switched reluctance machines |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610783848.5A CN106230143B (en) | 2014-03-31 | 2014-03-31 | A kind of switched reluctance machines |
| CN201410127817.5A CN103840574B (en) | 2014-03-31 | 2014-03-31 | Switched reluctance motor |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410127817.5A Division CN103840574B (en) | 2014-03-31 | 2014-03-31 | Switched reluctance motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106230143A CN106230143A (en) | 2016-12-14 |
| CN106230143B true CN106230143B (en) | 2019-02-12 |
Family
ID=50803808
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610783848.5A Expired - Fee Related CN106230143B (en) | 2014-03-31 | 2014-03-31 | A kind of switched reluctance machines |
| CN201410127817.5A Active CN103840574B (en) | 2014-03-31 | 2014-03-31 | Switched reluctance motor |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410127817.5A Active CN103840574B (en) | 2014-03-31 | 2014-03-31 | Switched reluctance motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN106230143B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578469B (en) * | 2015-01-22 | 2017-11-10 | 北京建筑大学 | A kind of method, apparatus for reducing switched reluctance machines vibration and noise |
| DE102016217734A1 (en) | 2016-09-16 | 2018-03-22 | Siemens Aktiengesellschaft | Rotor with coil arrangement and winding carrier |
| CN108471198B (en) * | 2018-04-26 | 2023-07-28 | 北京建筑大学 | Control method, device and system for switched reluctance motor and controller |
| CN108390511B (en) * | 2018-04-26 | 2023-07-28 | 北京建筑大学 | Switch reluctance motor and control method, device and system thereof |
| CN109194037B (en) * | 2018-10-30 | 2021-06-01 | 清华大学 | Oil-cooled motor for isolating space where motor stator and rotor are located |
| CN110690793B (en) * | 2019-09-23 | 2021-03-16 | 中国科学院电工研究所 | Evaporative cooling motor |
| CN112648333B (en) * | 2020-12-08 | 2024-10-29 | 中冶赛迪信息技术(重庆)有限公司 | Suspended anti-disturbance structure, device and manufacturing method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2495052Y (en) * | 2001-09-07 | 2002-06-12 | 张云 | Open type shield submersible electric motor |
| CN201887602U (en) * | 2010-11-08 | 2011-06-29 | 肖富凯 | Air cooling structure for a motor and horizontal type motor |
| CN202121449U (en) * | 2011-06-28 | 2012-01-18 | 中科盛创（青岛）电气有限公司 | Wind driven generator stator evaporation cooling glass fiber reinforced plastic isolation sleeve and sealing apparatus thereof |
| CN102594026A (en) * | 2012-03-13 | 2012-07-18 | 肖富凯 | Motor employing immersion type evaporative cooling and structure optimization method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1241773B1 (en) * | 2001-03-14 | 2012-09-12 | Nissan Motor Co., Ltd. | Rotating electrical machine with air-gap sleeve |
| JP2004023806A (en) * | 2002-06-12 | 2004-01-22 | Nissan Motor Co Ltd | Motor cooling structure |
| CN1756030A (en) * | 2004-09-28 | 2006-04-05 | 乐金电子(天津)电器有限公司 | Stator core of motor |
| CN103050330A (en) * | 2013-01-06 | 2013-04-17 | 中国科学院电工研究所 | Vacuum switch |
| CN103151879A (en) * | 2013-04-03 | 2013-06-12 | 天津市松正电动汽车技术股份有限公司 | Liquid-cooled motor |
| CN203774890U (en) * | 2014-03-31 | 2014-08-13 | 北京建筑大学 | Switch magnetic resistance motor |
-
2014
- 2014-03-31 CN CN201610783848.5A patent/CN106230143B/en not_active Expired - Fee Related
- 2014-03-31 CN CN201410127817.5A patent/CN103840574B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2495052Y (en) * | 2001-09-07 | 2002-06-12 | 张云 | Open type shield submersible electric motor |
| CN201887602U (en) * | 2010-11-08 | 2011-06-29 | 肖富凯 | Air cooling structure for a motor and horizontal type motor |
| CN202121449U (en) * | 2011-06-28 | 2012-01-18 | 中科盛创（青岛）电气有限公司 | Wind driven generator stator evaporation cooling glass fiber reinforced plastic isolation sleeve and sealing apparatus thereof |
| CN102594026A (en) * | 2012-03-13 | 2012-07-18 | 肖富凯 | Motor employing immersion type evaporative cooling and structure optimization method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103840574B (en) | 2017-02-22 |
| CN103840574A (en) | 2014-06-04 |
| CN106230143A (en) | 2016-12-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106230143B (en) | A kind of switched reluctance machines | |
| JP6599005B2 (en) | Consecutive pole type rotor, electric motor and air conditioner | |
| JP6832935B2 (en) | Consequential pole type rotor, electric motor and air conditioner | |
| JP5392101B2 (en) | Motor cooling structure | |
| JP7013285B2 (en) | Heat pipes, rotors and rotary machines | |
| US10404135B2 (en) | High torque density electric motor and/or generator | |
| JP2005012989A (en) | Cooling structure of stator in rotating electric machine | |
| JP6545393B2 (en) | Conscious pole rotor, motor and air conditioner | |
| CN103109011A (en) | Brushless motor for washing machine and drum-type washing machine provided with same | |
| JP2004147489A (en) | Electric motor | |
| CA2929597A1 (en) | Modular permanent magnet motor and pump assembly | |
| CN109923757B (en) | Permanent magnet type rotating electrical machine and compressor using the same | |
| JP2016220298A (en) | Axial gap type rotary electric machine | |
| CN103001424B (en) | The outer rotating motor of Axial and radial excitation brushless, permanently | |
| JP6072199B1 (en) | Rotating electric machine | |
| CN103840573B (en) | Stator seal structure of switched reluctance motor | |
| JP5507131B2 (en) | Motor unit | |
| CN203774890U (en) | Switch magnetic resistance motor | |
| JP2008109794A (en) | Axial gap type motor and compressor therewith | |
| JP2008154319A (en) | Rotary electric machine | |
| JP2011050179A (en) | Rotor and motor | |
| JP2002247782A (en) | Rotating electric machine and its stator | |
| JP2003125547A (en) | Dynamo-electric machine | |
| JP2009303445A (en) | Permanent magnet motor | |
| JP4446867B2 (en) | Stator insulation structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190212 Termination date: 20190331 |