CN114204751A - Induction permanent magnet synchronous motor dragging device and operation method thereof - Google Patents
Induction permanent magnet synchronous motor dragging device and operation method thereof Download PDFInfo
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- CN114204751A CN114204751A CN202111295089.5A CN202111295089A CN114204751A CN 114204751 A CN114204751 A CN 114204751A CN 202111295089 A CN202111295089 A CN 202111295089A CN 114204751 A CN114204751 A CN 114204751A
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 41
- 230000006698 induction Effects 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 67
- 230000017525 heat dissipation Effects 0.000 claims description 21
- 230000000087 stabilizing effect Effects 0.000 claims description 19
- 230000001681 protective effect Effects 0.000 claims description 8
- 238000013021 overheating Methods 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- 230000001771 impaired effect Effects 0.000 description 4
- 235000012046 side dish Nutrition 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
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- 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
-
- 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
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- 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
- H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
-
- 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
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/207—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a dragging device of an induction permanent magnet synchronous motor and an operation method thereof, in particular to the technical field of permanent magnet synchronous motors, which comprises a motor shell, wherein one side of the motor shell is provided with a first sealing cover through a screw fixing clamp, one side of the motor shell, which is far away from the first sealing cover, is provided with a second sealing cover through the screw fixing clamp, the middle part of the first sealing cover is rotatably provided with a driving shaft, one side of the driving shaft extends into the motor shell and is fixedly sleeved with a rotor assembly, one side of the motor shell, which is close to the rotor assembly, is provided with a stator assembly, the other side of the motor shell, which is close to the rotor assembly, is provided with an auxiliary magnet ring, and one side of the motor shell, which is close to the second sealing cover, is provided with a dragging assembly. Thereby synchronously improving the use effect of the permanent magnet synchronous motor.
Description
Technical Field
The invention relates to the technical field of permanent magnet synchronous motors, in particular to a dragging device of an induction permanent magnet synchronous motor and an operation method thereof.
Background
In the era of the gradual rise of new energy vehicles, the importance of a driving motor to the new energy vehicles is no better than that of an engine to a fuel vehicle, because the driving motor not only determines the starting speed of the vehicles, but also determines the acceleration performance of the vehicles, and at present, the vehicle motor popularized and used in the field of new energy mainly comprises a permanent magnet synchronous motor; because the power supply voltage of the new energy automobile is fixed, the rated back electromotive force of the motor is improved along with the increase of the rotating speed of the motor, and because the saturation of a current regulator is caused after the voltage on the direct current side of the inverter reaches the maximum value, in order to obtain a wider speed regulation range, the constant power speed regulation is realized when the new energy automobile operates at a high speed above the basic speed, and the motor needs to be subjected to weak magnetic control;
the weak magnetic control idea of the permanent magnet synchronous motor is derived from the magnetic control of a separately excited direct current motor, for the permanent magnet synchronous motor, the excitation magnetomotive force cannot be adjusted due to the generation of a permanent magnet, the aim of weak magnetic speed expansion can be achieved only by adjusting the stator current, namely increasing the demagnetizing current component of a straight shaft of a stator to maintain the voltage balance during high-speed operation, and the stator current is increased to cause great damage to batteries, electric control and motors of new energy automobiles, so that high temperature, high discharge and the like can be caused due to unsatisfactory control in many times, thereby causing the situations of smoke emission, ignition and the like of the automobiles,
in order to prevent the damage of the motor, an auxiliary magnet ring is usually used for speed regulation in the prior art, and the main technology is to flexibly change the effective magnetic induction area of a rotor assembly by changing the area of the auxiliary magnet ring wrapping the rotor assembly, so as to flexibly assist in dragging and regulating the rotating speed of a driving shaft under the condition of not changing current; however, there are problems with this way of changing the speed of the drag: the inside subassembly structure that drags that is used for driving auxiliary magnet circle horizontal migration is fairly simple, and the drive is not stable enough when auxiliary magnet circle horizontal migration to influence speed's control, secondly, lack corresponding heat dissipation part, can't carry out effectual heat dissipation to dragging subassembly and PMSM simultaneously, long-time back of using, the heat does not effectively effluvium and causes very easily drags the damage of subassembly and PMSM, for this reason, we provide an induction PMSM dragging device and operating method for solving above-mentioned problem.
Disclosure of Invention
The present invention is directed to an induction pmsm dragging apparatus and an operation method thereof, which solve the above problems of the related art.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an induction permanent magnet synchronous motor drive device, includes motor casing, one side of motor casing is equipped with first closing cap through the screw fixation card, one side that first closing cap was kept away from to motor casing is equipped with the second closing cap through the screw fixation card, the middle part of first closing cap is rotated and is equipped with the drive shaft, one side of drive shaft is extended into in the motor casing and fixed cover is equipped with the rotor subassembly, one side that is close to the rotor subassembly in the motor casing is equipped with stator module, the opposite side that is close to the rotor subassembly in the motor casing is equipped with the magnet circle of assistance, one side that is close to the second closing cap in the motor casing is equipped with and drags the subassembly, the outer wall integrated into one piece of motor casing has a plurality of radiating fin of evenly distributed.
As a preferred technical solution of the present invention, the outer wall of the stator assembly is fixedly installed with a fixing seat, and the fixing seat is fixedly installed on the inner wall of the motor housing.
As a preferred technical scheme of the present invention, a partition plate is fixedly clamped on one side of the inner wall of the motor housing, which is close to the rotor assembly, and the partition plate is located between the stator assembly and the auxiliary magnet ring.
According to a preferable technical scheme, the dragging assembly comprises a stabilizing frame, a side disc and a servo motor, the stabilizing frame is fixedly clamped on one side, close to the auxiliary magnet ring, of the inner wall of the motor shell, the side disc is fixedly clamped on one side, close to the second sealing cover, of the inner wall of the motor shell, the servo motor is fixedly clamped in the middle of the inner side of the second sealing cover, a plurality of protective sleeves distributed in an annular array mode are fixedly inserted outside the stabilizing frame, adjusting screws are rotatably clamped in the middle of the protective sleeves, inner screw cylinders are in threaded sleeve connection on one sides, close to the auxiliary magnet ring, of the adjusting screws, and one ends, far away from the adjusting screws, of the inner screw cylinders and the end portions of the auxiliary magnet ring are fixedly installed.
As a preferable technical scheme of the invention, one side of the adjusting screw rod, which is far away from the inner screw cylinder, penetrates through the side disc and is fixedly provided with the driven gear, the driving end of the servo motor is fixedly provided with the driving gear, the outer wall of one side of the side disc, which is far away from the stabilizing frame, is rotatably clamped with the auxiliary gear corresponding to the driven gear, the auxiliary gear is meshed with the corresponding driven gear, and the auxiliary gear is meshed with the driving gear.
As a preferred technical scheme of the present invention, a first bearing is fixedly clamped in the middle of the stabilizing frame, the end of the driving shaft is fixedly clamped in the middle of the first bearing, a second bearing is fixedly clamped in the middle of the first cover, and the driving shaft is fixedly clamped in the middle of the second bearing.
As a preferred technical scheme of the invention, fan blades are fixedly mounted at one end of the driving shaft close to the first bearing, the fan blades are positioned between the stabilizing frame and the side disc, through grooves are uniformly distributed on the side disc, a plurality of first air-dispersing grooves distributed in an annular array are formed in one side of the outer wall of the motor shell close to the first sealing cover, and a second air-dispersing groove correspondingly communicated with the first air-dispersing grooves is formed in one side of the inner wall of the motor shell close to the second sealing cover.
As a preferred technical scheme of the invention, a first sealing groove corresponding to the first sealing cover is formed in one side, away from the second sealing cover, of the motor shell, the first sealing cover is fixedly clamped in the first sealing groove through screws, and a first sealing gasket is arranged between the first sealing cover and the inner wall of the first sealing groove.
As a preferable technical scheme of the invention, a second sealing groove corresponding to the second sealing cover is formed in one side of the motor shell, which is far away from the first sealing cover, the second sealing cover is fixedly clamped in the second sealing groove through screws, and a second sealing gasket is arranged between the second sealing cover and the inner wall of the second sealing groove.
An operation method of a dragging device of an induction permanent magnet synchronous motor comprises the following steps:
step one, mounting of permanent magnet synchronous motor and dragging assembly
Firstly, a driving shaft, a rotor assembly, a stator assembly and a separation plate are arranged at corresponding positions on the inner wall of a motor shell, meanwhile, a first sealing cover is arranged at one side of the motor shell in a sealing mode, then, a dragging assembly with an auxiliary magnet ring is fixedly arranged at a corresponding position on the inner wall of the motor shell, the auxiliary magnet ring is movably sleeved at the other side of the rotor assembly, and a second sealing cover is arranged at the other side of the motor shell in a sealing mode;
step two, use of dragging assembly
When the rotating speed of the driving shaft needs to be adjusted, the servo motor is controlled and started, the driving gear can be driven to slowly rotate, and therefore the auxiliary gears are driven to synchronously reversely and stably slowly rotate, thereby synchronously driving a plurality of driven gears to drive the corresponding adjusting screw rods to stably and slowly rotate, thereby driving the inner screw barrel to horizontally move at the end part of the adjusting screw rods, thereby dragging the auxiliary magnet ring to stably and horizontally move back and forth, when the auxiliary magnet ring completely wraps the rotor assembly, the effective magnetic induction area of the rotor assembly is the largest, on the contrary, when the auxiliary magnetic ring is completely separated from the rotor assembly, the effective magnetic induction area of the rotor assembly is minimum, therefore, the effective magnetic induction area of the rotor assembly is flexibly changed by changing the area of the auxiliary magnet ring wrapping the rotor assembly, and the rotating speed of the driving shaft is flexibly and auxiliarily dragged and adjusted under the condition of not changing the current;
step three, synchronous heat dissipation
When using permanent magnet synchronous motor, stator module drive rotor subassembly and drive shaft rotate, thereby in drive shaft pivoted, can drive the fan blade and rotate, the inside air current that forms of motor casing, the circulation of air passes through to pass between firm frame and the side dish and gets into in motor casing is close to one side space of servo motor, carry out the heat exchange heat dissipation of wind body with servo motor, thereby effectively carry out the heat dissipation to dragging the subassembly and handle, prevent that servo motor from overheated impaired, the air current after the heat exchange gets into first wind dispelling groove through a plurality of second wind dispelling grooves, and the port through first wind dispelling groove discharges, thereby realize the circulation to air current in the motor casing, and then realize the wind body circulation heat dissipation to motor casing in step.
Compared with the prior art, the invention has the beneficial effects that:
1. by arranging the dragging component, the area of the auxiliary magnet ring wrapping the rotor component is flexibly changed, so that the effective magnetic induction area of the rotor component is flexibly changed, and the rotation speed of the driving shaft is flexibly and auxiliarily dragged and adjusted under the condition of not changing current;
2. by arranging the fan blades, the first air dispersing groove and the second air dispersing groove, when the permanent magnet synchronous motor is used, the fan blades can be driven to rotate while the driving shaft rotates, airflow is formed inside the motor shell, and air heat exchange heat dissipation is performed on the servo motor, so that heat dissipation treatment is effectively performed on the dragging assembly, overheating damage of the servo motor is prevented, the airflow after heat exchange enters the first air dispersing groove through the second air dispersing grooves and is discharged through a port of the first air dispersing groove, circulation of the airflow in the motor shell is realized, and air circulation heat dissipation of the motor shell is synchronously realized, so that the using effect of the permanent magnet synchronous motor is synchronously improved;
3. through setting up first closing cap, second closing cap and motor casing and sealing demountable installation to promoted the inside sealed effect of whole PMSM, prevented that inside from dragging the subassembly impaired, and conveniently carry out the dismantlement of first closing cap, second closing cap and dismantle the maintenance to dragging the subassembly, further promoted the result of use who drags the subassembly.
Drawings
FIG. 1 is a schematic structural view of the present invention,
FIG. 2 is a schematic connection diagram of a part of the structure of the present invention,
FIG. 3 is a schematic view of the connection structure of the auxiliary magnetic ring and the dragging component in the present invention,
FIG. 4 is a schematic view of another coupling structure of the auxiliary magnet ring and the dragging member in the present invention,
figure 5 is an enlarged view of the invention at a in figure 4,
figure 6 is a schematic view of the construction of the motor housing, first cover and second cover of the present invention,
figure 7 is an enlarged view of the invention at B in figure 6,
figure 8 is an enlarged view of the invention at C in figure 6,
fig. 9 is a perspective view of the structure of the present invention.
In the figure: 1. a motor housing; 2. a first cover; 3. a second cover; 4. a drive shaft; 5. a rotor assembly; 6. a stator assembly; 61. a fixed seat; 7. a separator plate; 8. an auxiliary magnetic ring; 9. a dragging component; 10. A fan blade; 11. a heat dissipating fin; 91. a stabilizing frame; 911. a first bearing; 912. a protective sleeve; 92. a side disc; 921. a through groove; 93. a servo motor; 931. a drive gear; 94. adjusting the screw rod; 95. An inner screw cylinder; 96. a driven gear; 961. an auxiliary gear; 21. a second bearing; 22. a first sealing gasket; 201. a first sealing groove; 31. a second sealing gasket; 301. a second sealing groove; 101. a first wind-dispelling groove; 102. and a second wind-dispersing groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b): as shown in fig. 1 to 9, the present invention provides an induction permanent magnet synchronous motor dragging device, which comprises a motor housing 1, wherein one side of the motor housing 1 is provided with a first sealing cover 2 through a screw fixing clip, one side of the motor housing 1 far away from the first sealing cover 2 is provided with a second sealing cover 3 through a screw fixing clip, the middle part of the first sealing cover 2 is rotatably provided with a driving shaft 4, one side of the driving shaft 4 extends into the motor housing 1 and is fixedly sleeved with a rotor assembly 5, one side of the motor housing 1 close to the rotor assembly 5 is provided with a stator assembly 6, the other side of the motor housing 1 close to the rotor assembly 5 is provided with an auxiliary magnet ring 8, one side of the motor housing 1 close to the second sealing cover 3 is provided with a dragging assembly 9, the outer wall of the motor housing 1 is integrally formed with a plurality of uniformly distributed radiating fins 11, and the radiating effect of the motor housing 1 is improved by arranging the plurality of radiating fins 11, thereby promoting the use effect of the whole permanent magnet synchronous motor and the internal dragging component 9.
One side fixing clip that 1 inner wall of motor casing is close to rotor subassembly 5 is equipped with division board 7, and division board 7 is located between stator module 6 and the magnet ring of assistance 8, through setting up division board 7, carries out the isolation between stator module 6 and the magnet ring of assistance 8, prevents that the magnetic field between stator module 6 and the magnet ring of assistance from taking place the influence each other.
The dragging component 9 comprises a stabilizing frame 91, a side disc 92 and a servo motor 93, the stabilizing frame 91 is fixedly clamped on one side of the inner wall of the motor shell 1 close to the auxiliary magnet ring 8, the side disc 92 is fixedly clamped on one side of the inner wall of the motor shell 1 close to the second sealing cover 3, the servo motor 93 is fixedly clamped on the middle part of the inner side of the second sealing cover 3, a plurality of protective sleeves 912 distributed in an annular array are fixedly inserted outside the stabilizing frame 91, an adjusting screw 94 is rotatably clamped in the middle of the protective sleeves 912, the adjusting screw 94 can rotate in the corresponding protective sleeves 912, an inner screw barrel 95 is respectively and threadedly sleeved on one side of the adjusting screw 94 close to the auxiliary magnet ring 8, one end of the inner screw barrel 95 far away from the adjusting screw 94 and the end part of the auxiliary magnet ring 8 are fixedly installed, the adjusting screw 94 is driven to rotate, the inner screw barrel 95 can be driven to horizontally move at the end part of the adjusting screw 94, thereby dragging the auxiliary magnet ring 8 to perform a stable horizontal back and forth movement.
One side that interior barrel 95 was kept away from to adjusting screw 94 passes side dish 92 and fixed mounting has driven gear 96, servo motor 93's drive end fixed mounting has drive gear 931, one side outer wall rotation card that stable frame 91 was kept away from to side dish 92 is equipped with the auxiliary gear 961 that corresponds with driven gear 96, auxiliary gear 961 and the driven gear 96 meshing connection that corresponds, auxiliary gear 961 and drive gear 931 meshing connection, through control and open servo motor 93, can drive gear 931 and carry out slow rotation, thereby drive the synchronous reverse stable slow rotation of a plurality of auxiliary gear 961, and then a plurality of driven gears 96 of synchronous drive correspond adjusting screw 94 and carry out stable slow rotation.
The middle part fixing clip of firm frame 91 is equipped with first bearing 911, and the end fixing clip of drive shaft 4 is in the middle part of first bearing 911, and the middle part fixing clip of first closing cap 2 is equipped with second bearing 21, and the fixed joint of drive shaft 4 has effectively improved drive shaft 4 pivoted stability through setting up first bearing 911, second bearing 21 in the middle part of second bearing 21.
The fan blades 10 are fixedly installed at one end, close to the first bearing 911, of the driving shaft 4, when the permanent magnet synchronous motor is used, the stator assembly 6 drives the rotor assembly 5 and the driving shaft 4 to rotate, so that the fan blades 10 can be driven to rotate while the driving shaft 4 rotates, airflow is formed inside the motor shell 1, the fan blades 10 are located between the stabilizing frame 91 and the side plate 92, through grooves 921 which are uniformly distributed are formed in the side plate 92, the airflow passes through the through grooves 921 through the space between the stabilizing frame 91 and the side plate 92 to enter a space, close to the servo motor 93, of one side of the motor shell 1, and carries out heat exchange and heat dissipation with the servo motor 93, so that heat dissipation treatment is effectively carried out on the dragging assembly 9, the servo motor 93 is prevented from being damaged due to overheating, the using effect of the whole dragging assembly 9 is improved, a plurality of first air-dispersing grooves 101 which are distributed in an annular array are formed in one side, close to the first sealing cover 2, of the outer wall of the motor shell 1, the second wind dispelling groove 102 that corresponds the intercommunication with first wind dispelling groove 101 is seted up to one side that the 1 inner wall of motor casing is close to second closing cap 3, the air current after the heat exchange gets into first wind dispelling groove 101 through a plurality of second wind dispelling grooves 102, and the port through first wind dispelling groove 101 is discharged, thereby realize the circulation to air current in the motor casing 1, and then realize the wind body circulation heat dissipation to motor casing 1 in step, thereby synchronous promotion permanent magnet synchronous machine's result of use.
A first seal groove 201 corresponding to the first seal cover 2 is formed in one side, away from the second seal cover 3, of the motor shell 1, the first seal cover 2 is fixedly clamped in the first seal groove 201 through screws, and a first seal gasket 22 is arranged between the first seal cover 2 and the inner wall of the first seal groove 201, so that the first seal cover 2 and one side of the motor shell 1 can be sealed and detachably mounted; one side that first closing cap 2 was kept away from to motor casing 1 is seted up the second seal groove 301 that corresponds with second closing cap 3, and second closing cap 3 passes through screw fixation joint in second seal groove 301, be equipped with second seal ring 31 between second closing cap 3 and the second seal groove 301 inner wall, realize the sealed demountable installation of second closing cap 3 and motor casing 1 one side, thereby whole permanent magnet synchronous motor inside sealed effect has been promoted, prevent that inside from dragging subassembly 9 impaired, and conveniently carry out first closing cap 2, the dismantlement of second closing cap 3 is to dragging subassembly 9 and is dismantled the maintenance, the result of use that drags subassembly 9 has further been promoted.
An operation method of a dragging device of an induction permanent magnet synchronous motor comprises the following steps:
step one, mounting of the permanent magnet synchronous motor and the dragging component 9
Firstly, a driving shaft 4, a rotor assembly 5, a stator assembly 6 and a separation plate 7 are arranged at corresponding positions on the inner wall of a motor shell 1, meanwhile, a first sealing cover 2 is arranged at one side of the motor shell 1 in a sealing mode, then, a dragging assembly 9 with an auxiliary magnet ring 8 is fixedly arranged at corresponding positions on the inner wall of the motor shell 1, the auxiliary magnet ring 8 is movably sleeved at the other side of the rotor assembly 5, and a second sealing cover 3 is arranged at the other side of the motor shell 1 in a sealing mode;
step two, use of the dragging component 9
When the rotation speed of the driving shaft 4 needs to be adjusted, the servo motor 93 is controlled and started, the driving gear 931 can be driven to slowly rotate, so that the plurality of auxiliary gears 961 are driven to synchronously and stably rotate slowly in opposite directions, and then synchronously drives a plurality of driven gears 96 to drive the corresponding adjusting screw rods 94 to stably and slowly rotate, thereby driving the inner screw cylinders 95 to horizontally move at the end parts of the adjusting screw rods 94, and then drag the auxiliary magnet ring 8 to move back and forth stably and horizontally, when the auxiliary magnet ring 8 completely wraps the rotor assembly 5, the effective magnetic induction area of the rotor assembly 5 is the largest, on the contrary, when the auxiliary magnetic ring 8 is completely separated from the rotor assembly 5, the effective magnetic induction area of the rotor assembly 5 is minimum, therefore, the effective magnetic induction area of the rotor assembly 5 is flexibly changed by changing the area of the auxiliary magnet ring 8 wrapping the rotor assembly 5, and the rotating speed of the driving shaft 4 is flexibly and auxiliarily dragged and adjusted under the condition of not changing the current;
step three, synchronous heat dissipation
When using permanent magnet synchronous motor, stator module 6 drives rotor subassembly 5 and drive shaft 4 and rotates, thereby in drive shaft 4 pivoted, can drive fan blade 10 and rotate, the inside air current that forms of motor casing 1, the air current passes through logical groove 921 entering motor casing 1 and is close to one side space of servo motor 93 between firm frame 91 and the side dish 92, carry out wind body heat exchange heat dissipation with servo motor 93, thereby effectively carry out the heat dissipation to dragging subassembly 9, prevent that servo motor 93 from overheated impaired, the air current after the heat exchange gets into in first wind-dispelling groove 101 through a plurality of second wind-dispelling grooves 102, and discharge through the port of first wind-dispelling groove 101, thereby realize the circulation to air current in the motor casing 1, and then realize the wind body circulation heat dissipation to motor casing 1 in step.
The working principle is as follows: when the rotating speed of the driving shaft 4 needs to be adjusted, the servo motor 93 is controlled and started, the driving gear 931 can be driven to slowly rotate, so as to drive the auxiliary gears 961 to synchronously reversely and stably slowly rotate, and further to synchronously drive the driven gears 96 to drive the corresponding adjusting screws 94 to stably and slowly rotate, so as to drive the inner screw barrel 95 to horizontally move at the end parts of the adjusting screws 94, and further to drag the auxiliary magnet ring 8 to stably and horizontally move back and forth, when the auxiliary magnet ring 8 completely wraps the rotor assembly 5, the effective magnetic induction area of the rotor assembly 5 is the largest, conversely, when the auxiliary magnet ring 8 completely breaks away from the rotor assembly 5, the effective magnetic induction area of the rotor assembly 5 is the smallest, so that the effective magnetic induction area of the rotor assembly 5 is flexibly changed by changing the area of the auxiliary ring 8 wrapping the rotor assembly 5, and further the rotating speed of the driving shaft 4 is flexibly assisted and adjusted without changing the current, the damage of parts inside the permanent magnet synchronous motor is prevented;
when the permanent magnet synchronous motor is used, the stator assembly 6 drives the rotor assembly 5 and the driving shaft 4 to rotate, therefore, when the driving shaft 4 rotates, the fan blades 10 can be driven to rotate, airflow is formed inside the motor shell 1, the airflow passes through the through groove 921 between the stabilizing frame 91 and the side disc 92 to enter a space on one side of the motor shell 1 close to the servo motor 93, and carries out wind heat exchange and heat dissipation with the servo motor 93, thereby effectively performing heat dissipation treatment on the dragging assembly 9 and preventing the servo motor 93 from being damaged due to overheating, thereby improving the use effect of the whole dragging assembly 9, the air flow after heat exchange enters the first ventilating slot 101 through the plurality of second ventilating slots 102, and is discharged through the port of the first ventilating groove 101, thereby achieving the circulation of the air flow in the motor housing 1, and then realize the circulation of the wind body to motor casing 1 in step and dispel the heat to the result of use that has promoted PMSM in step.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides an induction PMSM drive device, includes motor casing (1), its characterized in that: one side of motor casing (1) is equipped with first closing cap (2) through the screw fixation card, one side that first closing cap (2) were kept away from in motor casing (1) is equipped with second closing cap (3) through the screw fixation card, the middle part of first closing cap (2) is rotated and is equipped with drive shaft (4), one side of drive shaft (4) is extended into in motor casing (1) and fixed cover is equipped with rotor subassembly (5), one side that is close to rotor subassembly (5) in motor casing (1) is equipped with stator module (6), the opposite side that is close to rotor subassembly (5) in motor casing (1) is equipped with auxiliary magnet circle (8), one side that is close to second closing cap (3) in motor casing (1) is equipped with drags subassembly (9), the outer wall integrated into one piece of motor casing (1) has a plurality of radiating fin (11) of evenly distributed.
2. The driving device of the induction permanent magnet synchronous motor according to claim 1, wherein: the outer wall fixed mounting of stator module (6) has fixing base (61), fixing base (61) fixed mounting is at the inner wall of motor casing (1).
3. The driving device of the induction permanent magnet synchronous motor according to claim 1, wherein: one side fixing clamp that motor casing (1) inner wall is close to rotor subassembly (5) is equipped with division board (7), division board (7) are located between stator module (6) and auxiliary magnet circle (8).
4. The driving device of the induction permanent magnet synchronous motor according to claim 1, wherein: the dragging component (9) comprises a stable frame (91), a side disc (92) and a servo motor (93), the stabilizing frame (91) is fixedly clamped on one side of the inner wall of the motor shell (1) close to the auxiliary magnet ring (8), the side disc (92) is fixedly clamped on one side of the inner wall of the motor shell (1) close to the second sealing cover (3), the servo motor (93) is fixedly clamped in the middle of the inner side of the second sealing cover (3), a plurality of protective sleeves (912) distributed in a ring array are fixedly inserted outside the stabilizing frame (91), the middle part of the protective sleeve (912) is rotatably clamped with an adjusting screw rod (94), an inner screw cylinder (95) is sleeved on one side of the adjusting screw rod (94) close to the auxiliary magnet ring (8) in a threaded manner, one end of the inner screw cylinder (95) far away from the adjusting screw rod (94) and the end part of the auxiliary magnet ring (8) are fixedly arranged.
5. The induction PMSM dragging device according to claim 4, characterized in that: one side of the adjusting screw rod (94) far away from the inner screw cylinder (95) penetrates through the side disc (92) and is fixedly provided with the driven gear (96), the driving end of the servo motor (93) is fixedly provided with the driving gear (931), the outer wall of one side of the side disc (92) far away from the stabilizing frame (91) is rotatably clamped with the auxiliary gear (961) corresponding to the driven gear (96), the auxiliary gear (961) is meshed with the corresponding driven gear (96), and the auxiliary gear (961) is meshed with the driving gear (931).
6. The induction PMSM dragging device according to claim 4, characterized in that: the middle fixing clamp of the stabilizing frame (91) is provided with a first bearing (911), the end part of the driving shaft (4) is fixedly clamped in the middle of the first bearing (911), the middle fixing clamp of the first sealing cover (2) is provided with a second bearing (21), and the driving shaft (4) is fixedly clamped in the middle of the second bearing (21).
7. The driving device of the induction permanent magnet synchronous motor according to claim 6, wherein: one end of the driving shaft (4) close to the first bearing (911) is fixedly provided with fan blades (10), the fan blades (10) are located between the stabilizing frame (91) and the side disc (92), the side disc (92) is provided with through grooves (921) which are uniformly distributed, one side, close to the first sealing cover (2), of the outer wall of the motor shell (1) is provided with a plurality of first air dispersing grooves (101) which are distributed in an annular array mode, and one side, close to the second sealing cover (3), of the inner wall of the motor shell (1) is provided with second air dispersing grooves (102) which are correspondingly communicated with the first air dispersing grooves (101).
8. The driving device of the induction permanent magnet synchronous motor according to claim 1, wherein: one side, far away from second closing cap (3), of motor casing (1) is provided with a first sealing groove (201) corresponding to first closing cap (2), and first closing cap (2) is fixed and clamped in first sealing groove (201) through a screw, and a first sealing washer (22) is arranged between inner walls of first closing cap (2) and first sealing groove (201).
9. The driving device of the induction permanent magnet synchronous motor according to claim 1, wherein: one side, far away from the first sealing cover (2), of the motor shell (1) is provided with a second sealing groove (301) corresponding to the second sealing cover (3), the second sealing cover (3) is fixedly clamped in the second sealing groove (301) through screws, and a second sealing gasket (31) is arranged between the inner walls of the second sealing cover (3) and the second sealing groove (301).
10. An operation method of a dragging device of an induction permanent magnet synchronous motor is characterized by comprising the following steps:
step one, mounting of the permanent magnet synchronous motor and the dragging component (9)
Firstly, a driving shaft (4), a rotor assembly (5), a stator assembly (6) and a separation plate (7) are installed at corresponding positions of the inner wall of a motor shell (1), meanwhile, a first sealing cover (2) is installed at one side of the motor shell (1) in a sealing mode, then, a dragging assembly (9) with an auxiliary magnet ring (8) is fixedly installed at corresponding positions of the inner wall of the motor shell (1), the auxiliary magnet ring (8) is movably sleeved at the other side of the rotor assembly (5), and a second sealing cover (3) is installed at the other side of the motor shell (1) in a sealing mode;
step two, use of the dragging component (9)
When the rotating speed of the driving shaft (4) needs to be adjusted, the servo motor (93) is controlled and started, the driving gear (931) can be driven to slowly rotate, so that the auxiliary gears (961) are driven to synchronously and reversely stably slowly rotate, and then the driven gears (96) are driven to synchronously drive the corresponding adjusting screws (94) to stably and slowly rotate, so that the inner screw barrel (95) is driven to horizontally move at the end parts of the adjusting screws (94), and further the auxiliary magnet ring (8) is dragged to stably and horizontally move back and forth, when the auxiliary magnet ring (8) completely wraps the rotor assembly (5), the effective magnetic induction area of the rotor assembly (5) is the largest, conversely, when the auxiliary magnet ring (8) completely breaks away from the rotor assembly (5), the effective magnetic induction area of the rotor assembly (5) is the smallest, so that the area of the rotor assembly (5) is wrapped by the auxiliary magnet ring (8) is changed, therefore, the effective magnetic induction area of the rotor assembly (5) is flexibly changed, and the rotation speed of the driving shaft (4) is flexibly and auxiliarily dragged and adjusted under the condition of not changing the current;
step three, synchronous heat dissipation
When the permanent magnet synchronous motor is used, the stator component (6) drives the rotor component (5) and the driving shaft (4) to rotate, therefore, when the driving shaft (4) rotates, the fan blades (10) can be driven to rotate, airflow is formed inside the motor shell (1), and the airflow passes through the through groove (921) between the stabilizing frame (91) and the side disc (92) and enters a space on one side of the motor shell (1) close to the servo motor (93) to exchange heat with the servo motor (93) to dissipate heat of the air, thereby effectively carrying out heat dissipation treatment on the dragging assembly (9), preventing the servo motor (93) from being damaged due to overheating, leading the air flow after heat exchange to enter the first ventilating groove (101) through the plurality of second ventilating grooves (102) and be discharged through the port of the first ventilating groove (101), thereby realize the circulation to air current in motor casing (1), and then realize the wind circulation heat dissipation to motor casing (1) in step.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111295089.5A CN114204751A (en) | 2021-11-03 | 2021-11-03 | Induction permanent magnet synchronous motor dragging device and operation method thereof |
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| CN202111295089.5A CN114204751A (en) | 2021-11-03 | 2021-11-03 | Induction permanent magnet synchronous motor dragging device and operation method thereof |
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- 2021-11-03 CN CN202111295089.5A patent/CN114204751A/en active Pending
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| JP2006246662A (en) * | 2005-03-07 | 2006-09-14 | Mitsubishi Electric Corp | Permanent magnet rotary machine |
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