CN111509899A - High-stability permanent magnet synchronous motor driven by single inverter - Google Patents
High-stability permanent magnet synchronous motor driven by single inverter Download PDFInfo
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- CN111509899A CN111509899A CN202010295974.2A CN202010295974A CN111509899A CN 111509899 A CN111509899 A CN 111509899A CN 202010295974 A CN202010295974 A CN 202010295974A CN 111509899 A CN111509899 A CN 111509899A
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- ball
- permanent magnet
- shell
- magnet synchronous
- synchronous motor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
Abstract
The invention belongs to the technical field of motors for inhibiting or reducing vibration and discloses a high-stability permanent magnet synchronous motor driven by a single inverter, which comprises a rotor, a stator and a shell which are sequentially arranged from inside to outside, wherein a driving shaft penetrating one end of the shell is coaxially fixed on the rotor and is rotatably connected with the shell; be equipped with the damping subassembly that offsets bottom the shell in the mount pad, damping subassembly includes a plurality of mounting panels that overlap the setting, and the mounting panel is embedded to be equipped with a plurality of first flexible buffering balls, and first flexible buffering ball includes big footpath ball and path ball, and big footpath ball and path ball are crisscross to be set up. The invention solves the problem of unstable operation of the motor caused by unbalanced moment of inertia when the motor operates in the prior art.
Description
Technical Field
The invention belongs to the technical field of motors for inhibiting or reducing vibration, and particularly relates to a high-stability permanent magnet synchronous motor driven by a single inverter.
Background
In the running process of the motor, the rotor and the driving shaft do work in rotation, so that large heat can be generated, and the rotor (a permanent magnet) is demagnetized at high temperature, so that the stable running of the motor is influenced. Meanwhile, the motor is not completely centrosymmetric or axisymmetric in physical structure, so that when the rotor and the driving shaft rotate in the operation process of the motor, the motor can not stably operate due to vibration caused by unbalance of rotational inertia, and further the power output of the motor is influenced.
Disclosure of Invention
The invention aims to provide a high-stability permanent magnet synchronous motor driven by a single inverter, so as to solve the problem that the motor is unstable in operation due to unbalance of rotational inertia when the motor operates in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme that the high-stability permanent magnet synchronous motor driven by the single inverter comprises a rotor, a stator and a shell which are sequentially arranged from inside to outside, wherein a driving shaft penetrating one end of the shell is coaxially fixed on the rotor and is rotatably connected with the shell, and the high-stability permanent magnet synchronous motor also comprises a mounting seat positioned below the shell, and the shell is vertically and slidably connected on the mounting seat; be equipped with the damping subassembly that offsets bottom the shell in the mount pad, damping subassembly includes a plurality of mounting panels that overlap the setting, and the mounting panel is embedded to be equipped with a plurality of first flexible buffering balls, and first flexible buffering ball includes big footpath ball and path ball, and big footpath ball and path ball are crisscross to be set up.
The technical principle of the technical scheme is as follows:
the vibration reduction component can be arranged to play a role in vibration reduction on the motor, so that the vibration of the motor in the operation process is reduced, and the stability of the operation of the motor is ensured. Through the overlapping setting of polylith mounting panel, all be equipped with first flexible buffering ball on the mounting panel, when the motor takes place to vibrate, can make first flexible buffering ball receive the extrusion to the energy of motor vibration is absorbed to the flexible ball, and with energy transmission to mounting panel on, the realization vibration energy is cleared up, and then plays the effect that slows down the motor vibration.
The beneficial effects of the technical scheme are as follows:
1. according to the technical scheme, the mounting plate and the first flexible buffer ball are arranged, so that the first flexible buffer ball is extruded when the motor vibrates, the first flexible buffer ball is extruded, the shell is prevented from being in rigid contact with the mounting plate, and the probability of damage to the shell is reduced;
2. when the first flexible buffer ball vibrates, the first flexible buffer ball can absorb the vibration energy of the shell and transmit the energy to the mounting plate, and the energy is resolved in the process, so that the vibration of the motor is reduced;
3. through setting up first flexible buffering ball into big footpath ball and path ball, when the vibration is less, just can realize the damping through the first flexible buffering ball of extrusion, and when the range of vibration is great, the power of the big footpath ball of extrusion can the grow, consequently, can extrude the path ball this moment, carries out the damping through the path ball, improves the effect of damping.
4. According to the technical scheme, the first flexible buffer ball is used for damping, compared with the existing method that the spring is directly used for damping, the damping effect of the spring is limited, the damping effect can only reduce damage caused by rigid contact, and due to the quick reset effect of the spring, the vibration of the whole spring is accelerated, so that the running of the motor is more unstable; therefore, the problem of unstable operation caused by large vibration of the motor in the operation process can be solved by the arrangement of the technical scheme.
The inventor discovers that the damping component can reduce the occurrence of the synchronous vibration of the damping component along with the shell by utilizing the first flexible buffer ball to buffer in the research and development process, and meanwhile, the first flexible buffer ball is embedded in the mounting plate, so that the energy of the vibration can be absorbed through the first flexible buffer ball and the mounting plate, the vibration of the motor can be reduced, and the stable operation of the motor can be ensured.
Furthermore, the large-diameter ball of the upper mounting plate is abutted against the small-diameter ball of the lower mounting plate.
Has the advantages that: the large-diameter ball and the small-diameter ball are abutted, so that the effect of downward transmission of vibration energy is better, and the vibration reduction effect can be improved.
Furthermore, the large-diameter ball of the upper mounting plate is abutted against the large-diameter ball of the lower mounting plate.
Has the advantages that: the large-diameter ball is abutted against the large-diameter ball, so that the compressible space during vibration reduction can be enlarged, and the limit of vibration reduction can be enlarged.
Furthermore, a limiting frame is arranged in the mounting seat, and the vibration reduction assembly is located in the limiting frame.
Has the advantages that: utilize spacing frame to carry on spacingly to damping subassembly, can inject damping subassembly's movement track, avoid damping subassembly to take place the dislocation, and then avoid damping subassembly's damping effect to receive the influence.
Further, the spacing frame inboard all is equipped with four buffer boards, all is equipped with the recess between the inner wall of buffer board and spacing frame, and the recess is embedded to be equipped with the flexible buffering ball of second.
Has the advantages that: the vibration of motor is not only vertical, still can take place horizontal vibration, consequently through setting up the flexible buffering ball of buffer board and second, can realize horizontal damping, further improves the damping effect.
Further, the second flexible buffer ball also comprises a large-diameter ball and a small-diameter ball, and the large-diameter ball and the small-diameter ball are arranged in a staggered mode.
Has the advantages that: the second flexible buffer ball also comprises a large-diameter ball and a small-diameter ball, and when the vibration is large, the small-diameter ball can be used for damping, so that the damping limit is improved.
Further, the first flexible buffer ball and the second flexible buffer ball are rubber balls, silica gel balls or latex balls.
Has the advantages that: rubber ball, silica gel ball and latex ball all have certain elastic deformation ability to have the effect of inhaling the vibrations, can make whole damping subassembly's damping effect good.
Further, all be equipped with the spring between the periphery of spacing frame and bottom and the mount pad.
Has the advantages that: set up the spring between spacing frame and mount pad, can avoid the impaired condition of vibration that the rigid contact of spacing frame and mount pad leads to appear. The spring is arranged between the limiting frame and the mounting seat, after vibration is absorbed by the vibration absorption assembly in the limiting frame, the vibration actually generated by the limiting frame is smaller, and the spring can play a role in buffering to avoid the damage caused by vibration; the situation that the motor vibrates due to the characteristics of the spring can be avoided.
Furthermore, a limiting piece is fixed at the bottom of the limiting frame, the limiting piece comprises a sliding barrel fixed at the bottom of the mounting seat, a pull rod is vertically and slidably connected in the sliding barrel, a sliding plate vertically and slidably connected in the sliding barrel is fixed at the bottom of the pull rod, a pressure relief opening is formed in the upper part of the sliding barrel, and a pressure relief valve is arranged in the pressure relief opening; the pull rod is also sleeved with a spring.
Has the beneficial effects that; the vibration can be slowed down through the setting of locating part. Under the condition that the vibration of motor was not cleared up completely, spacing frame can take place the vibration along with the shell, consequently can make spacing frame extrusion can stretch the pull rod, and at this in-process, under the effect of atmospheric pressure, the removal of pull rod and slide can receive the hindrance, and then can reduce the vibration of spacing frame, plays the effect of damping.
Furthermore, the upper part of the sliding barrel is provided with a rubber block at the periphery of the pull rod.
Has the advantages that: the rubber block has elastic deformation capacity and can be extruded, but the stress requirement of the deformation of the rubber block is large, so that the resistance of the sliding plate and the pull rod during sliding can be further increased, and the vibration can be reduced by utilizing the rubber block.
Drawings
FIG. 1 is a schematic structural view of example 1 of the present invention;
fig. 2 is a schematic structural diagram of a limiting member in embodiment 2 of the present invention;
fig. 3 is a schematic structural view of a motor body in embodiment 3 of the present invention;
fig. 4 is a sectional view taken along line a-a in fig. 3.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the motor comprises a motor body 1, a rotor 11, a stator 12, a cooling channel 121, an annular groove 122, a shell 13, air holes 131, a driving shaft 14, a radiating fin 141, a mounting seat 2, a limiting frame 3, a mounting plate 4, a first flexible buffer ball 41, a buffer plate 5, a second flexible buffer ball 51, a connecting plate 6, a sliding barrel 7, a sliding plate 71, a pull rod 72, a rubber block 73, an air inlet 74, an air outlet 75, a limiting ring 76 and an air guide pipe 8.
Example 1:
a high-stability permanent magnet synchronous motor driven by a single inverter is basically as shown in figure 1, and comprises a mounting seat 2 and a motor main body 1. The motor body 1 comprises a rotor 11, a stator 12 and a housing 13 (not shown in fig. 1) which are arranged in sequence from inside to outside, a driving shaft 14 is coaxially and rotatably connected to the stator 12, and the rotor 11 is wrapped outside the driving shaft 14. The left end of the driving shaft 14 penetrates the housing 13 and extends out of the housing 13, and the left end of the driving shaft 14 is rotatably connected with the housing 13. And a connecting plate 6 which is in threaded connection with the bottom of the shell 13.
Be equipped with the mounting groove in the mount pad 2, be equipped with spacing frame 3 in the mounting groove, be equipped with spring or locating part, preferred spring in this embodiment between the bottom of spacing frame 3 and lateral wall and the mounting groove. Be provided with damping assembly in the spacing frame 3, the top of spacing frame 3 is equipped with the stopper.
Damping component includes that the polylith stacks mounting panel 4 in spacing frame 3, is provided with a plurality of through-holes on mounting panel 4, and equal block has first flexible buffering ball 41 in every through-hole, and first flexible buffering ball 41 is including big footpath ball and path ball, and just the crisscross setting of big footpath ball and path ball. The big footpath ball on the adjacent mounting panel 4 offsets with the path ball or the big footpath ball on the adjacent mounting panel 4 offsets with the big footpath ball, and the big footpath ball on the adjacent mounting panel 4 of this embodiment chose to set up the mode that offsets with the big footpath ball. The bottom of the connecting plate 6 is welded with the mounting plate 4 at the top.
Still be equipped with four parallel buffer boards 5 of the side of spacing frame 3 respectively in spacing frame 3, buffer board 5 is equipped with the recess on being close to the lateral wall of spacing frame 3 one side, also is equipped with the recess on spacing frame 3's the inside wall, and the recess quantity on buffer board 5 and the spacing frame 3 equals, and mutually supports between the recess. The buffer structure further comprises second flexible buffer balls 51 which are equal to the number of the grooves in the limiting frame 3, and the second flexible buffer balls 51 are arranged in the two grooves which are matched with each other on the limiting frame 3 and the buffer plate 5. The second flexible buffer balls 51 also include large-diameter balls and small-diameter balls, and the large-diameter balls and the small-diameter balls are arranged in a staggered manner. The diameters of the large-diameter ball and the small-diameter ball are selected according to actual requirements, for example, the large-diameter ball in the embodiment is a ball body with the diameter of 2cm, and the small-diameter ball is a ball body with the diameter of 1 cm.
The first flexible buffer ball 41 and the second flexible buffer ball 51 may be rubber balls, silicone balls or latex balls, and the rubber balls are preferred in this embodiment.
The specific implementation process is as follows:
during the operation of the motor, because the structure of the motor body 1 is not completely axisymmetric, when the driving shaft 14 and the rotor 11 rotate, the moment of inertia is unbalanced, which may cause the motor body 1 to be unstable and vibrate, thereby affecting the power output of the motor. And in this in-process, when motor body 1 takes place vertical vibration, can extrude mounting panel 4 to make first flexible buffer ball 41 on the mounting panel 4 extruded, play the effect of a buffering, avoid motor body 1 and the impaired condition of shell 13 that the rigid contact of mount pad 2 leads to appear. When the first flexible buffer ball 41 is pressed, the energy of the vibration is absorbed and transmitted to the first flexible buffer ball 41 and the mounting plate 4 which are in contact with the first flexible buffer ball, so that the decomposition of the vibration energy is realized, the vibration of the motor body 1 is reduced, and the running stability is improved.
And when the lateral vibration takes place at motor body 1, can extrude buffer board 5 for buffer board 5 extrudes flexible buffering ball 51 of second, carries out the resolution of vibration energy through flexible buffering ball 51 of second and buffer board 5, thereby reduces the vibration of motor, improves the stability of motor operation.
And at the in-process of damping, spacing frame 3 also can receive the power of a vibration, through setting up the spring, can play the effect of buffering, avoids spacing frame 3 direct and mount pad 2 to take place the impaired condition that the striking leads to and appear.
Example 2:
An air inlet 74 and an air outlet 75 are formed at the lower part of the sliding barrel 7 below the sliding plate 71, an air inlet check valve is arranged in the air inlet 74, when the sliding plate 71 slides upwards, the pressure at the lower part of the sliding barrel 7 is reduced, and therefore air is sucked in through the air inlet 74; an air outlet one-way valve is arranged in the air outlet 75, and when the sliding plate 71 slides downwards, air at the lower part of the sliding barrel 7 is extruded, so that the pressure at the lower part is increased, and the air outlet one-way valve is opened, so that the air at the lower part can be discharged. The top of the sliding plate 71 is also fixed with a rubber block 73, and the rubber block 73 wraps the pull rod 72.
The specific implementation process is as follows:
utilize the locating part to cushion, when spacing frame 3 received the vibration, can directly drive pull rod 72 and remove, because the both ends of pull rod 72 are articulated with spacing frame 3 respectively, can realize the diversified removal of pull rod 72. In the process of vibration, when the pull rod 72 moves, when the sliding plate 71 slides in the sliding barrel 7, the upper part or the lower part of the sliding barrel 7 can be extruded, the lower part of the sliding barrel 7 is sealed, and the pressure relief valve is arranged, so that buffering and shock absorption can be performed through the pressure of gas, the rubber block 73 is arranged on the upper part of the sliding barrel 7, the movement of the pull rod 72 can be limited besides the effects of buffering and shock absorption, the movement of the limiting frame 3 can be limited, the position of the limiting frame 3 is prevented from greatly moving, and the stability of the motor body 1 is ensured.
Example 3:
The specific implementation process is as follows:
the operational instability of the motor is associated with a large amount of heat generation during the operation of the motor, in addition to the vibration. By providing the heat dissipating fins 141 and the cooling channel 121, when the motor operates, the driving shaft 14 drives the heat dissipating fins 141 to rotate, thereby generating an air flow and guiding the air flow into the cooling channel 121. During the vibration of the motor, when the sliding plate 71 is pressed, the gas in the sliding barrel 7 is pressed, so that the gas enters the annular groove 122 through the flow guide pipe and then enters the cooling channel 121. The cooling channel 121 and the annular groove 122 form an air amplifier structure, according to the operation principle of the air amplifier, the flow rate of the gas in the cooling channel 121 can be accelerated, and then according to the law of conservation of energy, the temperature of the gas becomes lower after the flow rate of the gas becomes faster, so that the heat exchange between the gas and the stator 12 can be further accelerated, and the temperature of the stator 12 and the rotor 11 can be reduced; the influence of heat on the operation of the motor is reduced, and the stability of the operation of the motor is improved.
It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention, and these changes and modifications should not be construed as affecting the performance of the invention and its practical application.
Claims (10)
1. The utility model provides an utilize single inverter driven high stability PMSM, includes rotor, stator and the shell that sets gradually from interior to exterior, still coaxial fixed has the drive shaft that runs through shell one end on the rotor, and the drive shaft rotates with the shell to be connected its characterized in that: the mounting seat is positioned below the shell, and the shell is vertically connected to the mounting seat in a sliding manner; be equipped with the damping subassembly that offsets bottom the shell in the mount pad, damping subassembly includes a plurality of mounting panels that overlap the setting, and the mounting panel is embedded to be equipped with a plurality of first flexible buffering balls, and first flexible buffering ball includes big footpath ball and path ball, and big footpath ball and path ball are crisscross to be set up.
2. A high stability permanent magnet synchronous motor driven by a single inverter according to claim 1, wherein: the large-diameter ball of the upper mounting plate is abutted against the small-diameter ball of the lower mounting plate.
3. A high stability permanent magnet synchronous motor driven by a single inverter according to claim 1, wherein: the large-diameter ball of the upper mounting plate is abutted against the large-diameter ball of the lower mounting plate.
4. A high-stability permanent magnet synchronous motor driven by a single inverter according to any one of claims 1 to 3, wherein: a limiting frame is arranged in the mounting seat, and the vibration reduction assembly is located in the limiting frame.
5. The high-stability permanent magnet synchronous motor driven by the single inverter according to claim 4, wherein: the limiting frame is internally provided with four buffer plates, grooves are formed between the buffer plates and the inner wall of the limiting frame, and second flexible buffer balls are embedded in the grooves.
6. The high-stability permanent magnet synchronous motor driven by the single inverter according to claim 5, wherein: the second flexible buffer ball also comprises a large-diameter ball and a small-diameter ball, and the large-diameter ball and the small-diameter ball are arranged in a staggered mode.
7. The high-stability permanent magnet synchronous motor driven by the single inverter according to claim 6, wherein: the first flexible buffer ball and the second flexible buffer ball are both rubber balls, silica gel balls or latex balls.
8. A high stability permanent magnet synchronous motor driven by a single inverter according to claim 7, wherein: springs are arranged between the periphery and the bottom of the limiting frame and the mounting seat.
9. A high stability permanent magnet synchronous motor driven by a single inverter according to claim 7, wherein: a limiting piece is fixed at the bottom of the limiting frame and comprises a sliding barrel fixed at the bottom of the mounting seat, a pull rod is vertically and slidably connected in the sliding barrel, a sliding plate vertically and slidably connected in the sliding barrel is fixed at the bottom of the pull rod, a pressure relief opening is formed in the upper part of the sliding barrel, and a pressure relief valve is arranged in the pressure relief opening; the pull rod is also sleeved with a spring.
10. A high stability permanent magnet synchronous motor driven by a single inverter according to claim 9, wherein: the upper portion of slip bucket is located the periphery of pull rod and is equipped with the rubber block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010295974.2A CN111509899B (en) | 2020-04-15 | 2020-04-15 | High-stability permanent magnet synchronous motor driven by single inverter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010295974.2A CN111509899B (en) | 2020-04-15 | 2020-04-15 | High-stability permanent magnet synchronous motor driven by single inverter |
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| CN111509899A true CN111509899A (en) | 2020-08-07 |
| CN111509899B CN111509899B (en) | 2021-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012072890A (en) * | 2010-09-30 | 2012-04-12 | Nsk Ltd | Method of designing rolling bearing, and rolling bearing |
| CN104143892A (en) * | 2013-05-08 | 2014-11-12 | 三菱电机株式会社 | Embedded permanent magnet rotary electric machine |
| CN205960868U (en) * | 2016-07-12 | 2017-02-15 | 天津辰宝机电科技有限公司 | Be applied to interchange slowspeed machine in elevator switch door field |
| CN108206602A (en) * | 2018-02-27 | 2018-06-26 | 重庆勇略商贸有限公司 | A kind of electric motor of automobile vibration-damping radiating device |
| CN108667202A (en) * | 2018-06-19 | 2018-10-16 | 浙江欧导自动化设备有限公司 | A kind of motor base of multidirectional vibration damping and noise reduction |
-
2020
- 2020-04-15 CN CN202010295974.2A patent/CN111509899B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012072890A (en) * | 2010-09-30 | 2012-04-12 | Nsk Ltd | Method of designing rolling bearing, and rolling bearing |
| CN104143892A (en) * | 2013-05-08 | 2014-11-12 | 三菱电机株式会社 | Embedded permanent magnet rotary electric machine |
| CN205960868U (en) * | 2016-07-12 | 2017-02-15 | 天津辰宝机电科技有限公司 | Be applied to interchange slowspeed machine in elevator switch door field |
| CN108206602A (en) * | 2018-02-27 | 2018-06-26 | 重庆勇略商贸有限公司 | A kind of electric motor of automobile vibration-damping radiating device |
| CN108667202A (en) * | 2018-06-19 | 2018-10-16 | 浙江欧导自动化设备有限公司 | A kind of motor base of multidirectional vibration damping and noise reduction |
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| CN111509899B (en) | 2021-07-23 |
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Effective date of registration: 20230802 Address after: No. 57, 8th Floor, Building 1, No. 20 Jialing Road, Wuhou District, Chengdu City, Sichuan Province, 610000 Patentee after: Chengdu Huashengxin Intellectual Property Service Co.,Ltd. Address before: No.319, Honghe Avenue, Yongchuan District, Chongqing 401331 Patentee before: CHONGQING University OF ARTS AND SCIENCES Effective date of registration: 20230802 Address after: 274000 in Bohai Road intelligent manufacturing machinery and equipment Industrial Park, Heze Economic Development Zone, Shandong Province Patentee after: Shandong Kangwo Holding Co.,Ltd. Address before: No. 57, 8th Floor, Building 1, No. 20 Jialing Road, Wuhou District, Chengdu City, Sichuan Province, 610000 Patentee before: Chengdu Huashengxin Intellectual Property Service Co.,Ltd. |
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