CN117526659B - Low-loss switch reluctance motor and control system thereof - Google Patents
Low-loss switch reluctance motor and control system thereof Download PDFInfo
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- CN117526659B CN117526659B CN202311591299.8A CN202311591299A CN117526659B CN 117526659 B CN117526659 B CN 117526659B CN 202311591299 A CN202311591299 A CN 202311591299A CN 117526659 B CN117526659 B CN 117526659B
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- 230000005540 biological transmission Effects 0.000 claims description 26
- 238000002955 isolation Methods 0.000 claims description 24
- 230000005389 magnetism Effects 0.000 claims description 23
- 230000000903 blocking effect Effects 0.000 claims description 18
- 238000004804 winding Methods 0.000 claims description 17
- 238000003825 pressing Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 13
- 239000000696 magnetic material Substances 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000013011 mating Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K19/00—Synchronous motors or generators
- H02K19/02—Synchronous motors
- H02K19/10—Synchronous motors for multi-phase current
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/14—Estimation or adaptation of motor parameters, e.g. rotor time constant, flux, speed, current or voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/08—Reluctance motors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Synchronous Machinery (AREA)
Abstract
The invention relates to the technical field of switched reluctance motors and discloses a low-loss switched reluctance motor and a control system thereof, wherein the low-loss switched reluctance motor comprises a machine shell, a plurality of groups of stator modules are fixedly arranged in the machine shell, a rotating shaft is rotatably arranged in the machine shell, a plurality of groups of rotor modules are arranged on the surface of the rotating shaft, and the rotor modules correspond to the stator modules one by one; the rotor modules comprise fixed rotor modules and movable rotor modules; according to the low-loss switch reluctance motor and the control system thereof, through independent design of the stator module and combined design of the fixed rotor module and the movable rotor module in the rotor module, the stator modules and the rotor modules with corresponding groups can be selected according to the running rotating speed and the load torque requirement of the switch reluctance motor, so that the rotating load caused by the rotor modules without working on a rotating shaft can be reduced under the condition that the switch reluctance motor can reach the required running rotating speed and load.
Description
Technical Field
The invention relates to the technical field of switched reluctance motors, in particular to a low-loss switched reluctance motor and a control system thereof.
Background
The switch reluctance motor is an electrodeless speed regulating motor, and is an optical, mechanical and electrical integrated high and new technology integrating modern microelectronic technology, digital technology, power electronic technology and infrared photoelectric technology with modern electromagnetic theory, design and manufacturing technology.
The switch reluctance motor has the advantage of wide speed regulation range, but the stator and the rotor inside the traditional switch reluctance motor are designed integrally, the winding inside the stator is in an operation state under the operation state of low rotation speed, high rotation speed, low torque or high torque, the whole rotor is also in an operation state, and when the switch reluctance motor is in the operation state of low rotation speed, low torque or high rotation speed, the whole rotation of the rotor can increase the rotation load of the rotating shaft of the switch reluctance motor, so that the energy loss of the switch reluctance motor is increased.
Disclosure of Invention
In order to solve the problem that the stator and the rotor inside the traditional switch reluctance motor are designed integrally, when the switch reluctance motor is in a low-rotation-speed low-torque or high-rotation-speed low-torque running state, the integral rotation of the rotor can increase the rotation load of a rotating shaft of the switch reluctance motor, so that the energy loss of the switch reluctance motor is increased, the invention is realized by the following technical scheme: the low-loss switch reluctance motor comprises a machine shell, wherein a plurality of groups of stator modules are fixedly arranged in the machine shell, each group of stator modules independently exist, windings in each group of stator modules are independently connected with a power supply, a rotating shaft is rotatably arranged in the machine shell, a plurality of groups of rotor modules are arranged on the surface of the rotating shaft, the rotor modules correspond to the stator modules one by one, and after the windings in one stator module are connected with the power supply, the stator modules drive the corresponding rotor modules to rotate;
The rotor modules comprise fixed rotor modules and movable rotor modules, the fixed rotor modules are fixedly arranged on the surface of the rotating shaft, and the movable rotor modules can be rotatably arranged on the surface of the rotating shaft through bearings;
The movable rotor module can be locked on the surface of the rotating shaft, and when the windings inside the stator module corresponding to the movable rotor module are powered on, the movable rotor module and the rotating shaft are in a locking state.
According to the load torque and the rotating speed of the switch reluctance motor, the number of groups of the stator modules which are connected with the power supply is selected, so that the rotor modules with the corresponding number of groups are driven to drive the rotating shaft to rotate, the rotating speed and the rotating torque of the rotating shaft meet the requirements, the use of redundant stator modules is avoided, the energy consumption is increased, and meanwhile, the rotating load of the rotating shaft is prevented from being increased by a plurality of groups of rotor modules.
Further, a linkage assembly is arranged between the movable rotor module and the rotating shaft, the movable rotor module and the rotating shaft are in a locking state or a relative rotation state by using the linkage assembly, and the linkage assembly comprises:
The swivel is fixedly arranged on the outer ring surface of the bearing and is fixedly connected with the movable rotor module;
the first linkage disc is axially and slidably arranged on the surface of the swivel, pushing blocks are fixedly arranged on the surface of the first linkage disc, and the pushing blocks are circumferentially distributed in an annular shape;
and the second linkage disc is fixedly arranged on the surface of the rotating shaft, a telescopic block is arranged on the surface of one side of the second linkage disc, which is close to the first linkage disc, the blocks are distributed in an annular circumferential direction, and the blocks can be matched with the pushing blocks.
When the first linkage disc and the second linkage disc are in a mutually separated state, the movable rotor module and the rotating shaft are in a relative rotation state, when the first linkage disc approaches the second linkage disc, the push block is matched with the stop block, the movable rotor module and the rotating shaft are in a locking state, and the rotation of the movable rotor module can provide driving force for the rotation of the rotating shaft.
Meanwhile, the movable rotor module is linked with the rotating shaft in a mode of matching the push block and the stop block, so that when the rotating speed of the movable rotor module is the same as that of the lower rotating shaft, driving force is provided for the rotating shaft, and the problem that when the rotating shaft starts the movable rotor module in an operating state, larger friction loss is generated due to larger rotating speed difference between the rotating shaft and the movable rotor module is solved, and the clutch of the automobile can be solved.
Further, push blocks are arranged in the two rotation directions of the first linkage disc, and blocking blocks are arranged in the two rotation directions of the second linkage disc;
When the block in one direction extends out of the surface of the second linkage disc, the block in the other direction is stored in the second linkage disc, and the block extending out of the surface of the second linkage disc can be matched with the push block in the corresponding rotation direction of the surface of the first linkage disc.
The push block and the blocking block are respectively arranged in the two rotation directions of the first linkage disc and the second linkage disc, so that the movable rotor module can provide driving force for the rotating shaft in the two directions of forward rotation and reverse rotation.
Further, a notch is formed in the surface of the second linkage disc, a supporting plate is slidably mounted in the notch, the blocking block is located in the notch, a telescopic spring is arranged between the blocking block and the supporting plate, and a reset spring is arranged between the supporting plate and the bottom surface of the notch;
The inside of the second linkage disc is provided with guide grooves which are distributed in a crossing way, two cross grooves in the guide grooves are arc-shaped grooves, the two cross grooves are respectively distributed in an extending way along two rotating directions of the second linkage disc, and one ends of the two cross grooves, which are far away from the center of the second linkage disc, are respectively communicated with the corresponding notches in the two directions;
The ball pushing device is characterized in that pushing balls are placed in the two crossed grooves, limiting parts protruding inwards are arranged at positions, close to the crossing points, of the arc edges at the outer sides of the two crossed grooves, limiting plates are installed on the surfaces of the limiting parts in a rotating mode, and the limiting plates can rotate 90 degrees from the positions shown in fig. 13 to the ball pushing rolling directions.
When the rotating shaft rotates, the pushing balls roll in the direction away from the center of the second linkage disc under the action of centrifugal force, the pushing balls in the intersecting grooves with the extending distribution direction opposite to the rotating direction of the rotating shaft roll in the inner arc-shaped sides of the intersecting grooves, the corresponding limiting plates are pushed away to move to the other ends of the intersecting grooves, and the supporting plates in the corresponding notch are pushed to move to the outer side of the second linkage disc under the action of the centrifugal force, so that the blocking blocks in the corresponding notch are pushed out.
The pushing ball in the other cross groove can be limited to roll under the action of the limiting part, and the blocking block in the notch corresponding to the pushing ball cannot extend out of the surface of the second linkage disc under the action of the reset spring, so that the blocking block in the corresponding direction can be automatically pushed out of the surface of the second linkage disc according to the rotation direction of the rotating shaft.
Further, the second linkage disc is made of magnetic isolation materials, the limiting plate is made of magnetic attraction materials, the pushing ball is made of magnetic materials, and one end, close to the center of the second linkage disc, of the cross groove is provided with the magnetic materials and used for resetting the pushing ball, and meanwhile the fact that the limiting plate is pushed away by the pushing ball when the second linkage disc does not rotate is avoided.
The magnetic field that the linkage disc II adopted the magnetism isolation material to avoid stator module to produce leads to the fact the influence to pushing away the ball, pushes away the ball and adopts the magnetic material design, and the limiting plate adopts the magnetism to inhale the material design, can utilize to push away the ball when restoring to the throne to the limiting plate's suction, resets the limiting plate.
Further, an adjusting box is fixedly arranged between the two corresponding stator modules of the linkage assembly, a fluted disc is rotatably arranged in the adjusting box, a plurality of arc-shaped adjusting grooves are formed in the side surface of the fluted disc, and the arc-shaped adjusting grooves are distributed circumferentially in an annular mode;
a plurality of fan-shaped magnetic isolation plates are radially and slidably arranged in the adjusting box, guide posts are arranged on the surfaces of the magnetic isolation plates, and the guide posts are positioned in the adjusting groove;
The magnetic isolation plates are combined to form a circular ring when being contacted in sequence, and the magnetic isolation plates are made of magnetic isolation materials.
When the fluted disc rotates, the adjusting groove is matched with the guide post to drive the magnetism isolating plate to slide radially, and when the magnetism isolating plates are combined to form a circular ring, at least one side of the magnetism isolating plate is in a non-connected state with a power supply, so that a magnetic field generated by the stator module connected with the power supply is prevented from acting on a rotor module at the other side of the magnetism isolating plate, and the directional acting effect of the stator module is improved.
Further, a telescopic pressing block is arranged on the surface of the swivel, the pressing block is arched, a wedge-shaped rod is axially and slidably arranged in the swivel, one end of the wedge-shaped rod is fixedly connected with the first linkage disc, a compression spring is arranged between the other end of the wedge-shaped rod and the swivel, the wedge-shaped end of the wedge-shaped rod corresponds to the pressing block, when the pressing block moves towards the inner direction of the swivel, the pressing block pushes the wedge-shaped rod to move, the wedge-shaped rod drives the first linkage disc to move away from the second linkage disc, and a pushing block on the first surface of the linkage disc is separated from a blocking block on the second surface of the linkage disc;
The inner ring surface of the magnetism isolating plate is matched with the surface of the swivel, the magnetism isolating plate can contact with the pressing block when moving in the center direction of the adjusting box, magnetism isolating effect can be improved, meanwhile, the pressing block can be pushed to move in the inner direction of the swivel, and the pressing block adopts an arch design, so that the swivel can be pushed by the magnetism isolating plate when rotating positively or reversely.
Further, the fixed rotor modules are two groups, and the two groups of fixed rotor modules are symmetrically distributed on two sides of a radial center plane of a stator formed by a plurality of stator modules;
when the number of the movable rotor modules is even, two movable rotor modules are in a group, and the two movable rotor modules in the same group are symmetrically distributed on two sides of the radial center plane;
When the number of the movable rotor modules is odd, one movable rotor module is a group, the movable rotor modules are arranged on the surface of the rotating shaft by taking the radial central plane as a symmetrical plane, the other two movable rotor modules are a group, and the two movable rotor modules in the same group are symmetrically distributed on two sides of the radial central plane;
the connection states of the two movable rotor modules in the same group and the rotating shaft are the same.
The distribution design of the fixed rotor module and the movable rotor module can balance the driving force born by the surface of the rotating shaft.
Further, the surface of the fluted disc is meshed with a transmission gear;
The inside of casing rotates installs the transmission shaft, and the transmission shaft is rotated by micro motor drive, drive gear is located the surface of transmission shaft, the keyway has been seted up on the surface of transmission shaft, drive gear's inner ring surface radial slidable mounting has the fixture block, the fixture block can with the keyway cooperation, the fixture block is driven by the electromagnetism piece, and the electromagnetism piece is installed in the fixture block drive gear's of keyway one side of keeping away from, and when the electromagnetism piece was put through the power, can produce magnetic force to the fixture block, and when fixture block and keyway cooperation, drive gear rotated with the transmission shaft in step, and when fixture block and keyway separated, drive gear did not rotate along with the transmission shaft.
A low loss switched reluctance motor control system, the SRD system comprising:
The rotating speed and torque setting identification module is used for setting the running rotating speed and the load torque of the switched reluctance motor and simultaneously identifying and acquiring the rotating speed and the load torque of the switched reluctance motor running;
The power supply control module comprises a stator winding circuit control module and an electromagnetic block power supply connection control module;
the stator winding circuit control module is used for switching on a power supply for windings in the corresponding stator module according to the running rotating speed and the load torque of the switched reluctance motor set by the rotating speed and torque setting identification module;
the electromagnetic block power-on control module is used for switching on the power supply for the corresponding electromagnetic block according to the running rotating speed and the load torque of the switched reluctance motor set by the rotating speed and torque setting identification module.
Compared with the prior art, the invention has the following beneficial effects:
1. According to the low-loss switch reluctance motor and the control system thereof, through independent design of the stator module and combined design of the fixed rotor module and the movable rotor module in the rotor module, the stator modules and the rotor modules with corresponding groups can be selected according to the running rotating speed and the load torque requirement of the switch reluctance motor, so that the rotating load of the rotor module without working on a rotating shaft can be reduced under the condition that the switch reluctance motor can reach the required running rotating speed and load, and the integral energy consumption of the switch reluctance motor is reduced.
2. According to the low-loss switch reluctance motor and the control system thereof, through the design of the bidirectional push block on the surface of the first linkage disc and the bidirectional block on the surface of the second linkage disc in the linkage assembly and the combined design of the cross groove, the limiting part, the limiting plate, the push ball, the supporting plate and the block in the second internal guide groove of the linkage disc, the forward and reverse linkage locking between the movable rotor module and the rotating shaft can be realized, meanwhile, the block in the corresponding direction can be automatically pushed out of the second linkage disc according to the different rotating directions of the rotating shaft, so that the push block in the corresponding surface direction of the linkage disc is matched with the corresponding block.
Drawings
FIG. 1 is a perspective view of a switched reluctance motor according to the present invention;
FIG. 2 is a perspective view of a rotor module and shaft engaging structure of the present invention;
FIG. 3 is a perspective view of the linkage assembly of the present invention;
FIG. 4 is a perspective view of a stator module and rotor module mating structure of the present invention;
FIG. 5 is a perspective view of the stator module, the adjustment box and the rotor module mating structure of the present invention;
FIG. 6 is a perspective view of the engagement structure of the toothed disc and the magnetic shield of the present invention;
FIG. 7 is a perspective view of a stator module and rotor module mating structure of the present invention;
FIG. 8 is a front view of the internal structure of the linkage assembly and adjustment box of the present invention;
FIG. 9 is a schematic view of the structure of FIG. 8A according to the present invention;
FIG. 10 is a perspective view of a linkage disc of the present invention;
FIG. 11 is a perspective view of a second structure of the linkage disc of the present invention;
FIG. 12 is a schematic view of the internal structure of a second embodiment of the invention;
FIG. 13 is a schematic view of the structure of FIG. 12B according to the present invention;
FIG. 14 is a schematic view of the internal partial cross-sectional structure of a second embodiment of the invention;
FIG. 15 is a schematic view of the internal structure of the drive shaft and drive gear of the present invention;
FIG. 16 is a perspective view of a rotor module and shaft engaging structure of the present invention;
FIG. 17 is a flow chart of a switched reluctance motor control system of the present invention.
In the figure: 1. a housing; 2. a stator module; 3. fixing the rotor module; 31. a movable rotor module; 4. a rotating shaft; 5. a bearing; 6. a swivel; 61. briquetting; 62. a wedge bar; 7. a first linkage disc; 71. a pushing block; 8. a second linkage disc; 81. a notch; 811. a block; 812. a support plate; 82. a guide groove; 821. pushing the ball; 822. a limit part; 823. a limiting plate; 9. an adjustment box; 91. fluted disc; 911. an adjustment tank; 92. a magnetism isolating plate; 10. a transmission shaft; 11. a transmission gear; 111. and (5) clamping blocks.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiments of the low-loss switched reluctance motor and the control system thereof are as follows:
Referring to fig. 1-16, a low-loss switched reluctance motor includes a casing 1, a plurality of groups of stator modules 2 are fixedly installed in the casing 1, each group of stator modules 2 exists independently, windings in each group of stator modules 2 are individually connected with a power supply, a rotating shaft 4 is rotatably installed in the casing 1, a plurality of groups of rotor modules are installed on the surface of the rotating shaft 4, the rotor modules are in one-to-one correspondence with the stator modules 2, and when the windings in one stator module 2 are connected with the power supply, the stator modules 2 drive the corresponding rotor modules to rotate.
The rotor modules comprise a fixed rotor module 3 and a movable rotor module 31, wherein the fixed rotor module 3 is fixedly arranged on the surface of the rotating shaft 4, and the movable rotor module 31 can be rotatably arranged on the surface of the rotating shaft 4 through a bearing 5.
The movable rotor module 31 can be locked on the surface of the rotating shaft 4, and when the windings inside the stator module 2 corresponding to the movable rotor module 31 are powered on, the movable rotor module 31 and the rotating shaft 4 are in a locked state.
According to the load torque and the rotation speed of the switch reluctance motor, the number of groups of the stator modules 2 which are connected with the power supply is selected, so that the rotor modules with the corresponding number of groups are driven to drive the rotating shaft 4 to rotate, the rotation speed and the rotation torque of the rotating shaft 4 reach the requirements, the use of redundant stator modules 2 is avoided, the energy consumption is increased, and meanwhile, the rotation load of the rotating shaft 4 is prevented from being increased by the rotor modules with multiple groups.
A linkage assembly is arranged between the movable rotor module 31 and the rotating shaft 4, the movable rotor module 31 and the rotating shaft 4 are in a locking state or a relative rotating state by utilizing the linkage assembly, and the linkage assembly comprises a swivel 6, a first linkage disc 7 and a second linkage disc 8; the swivel 6 is fixedly arranged on the outer ring surface of the bearing 5 and is fixedly connected with the movable rotor module 31; the first linkage disc 7 is axially and slidably arranged on the surface of the swivel 6, the push blocks 71 are fixedly arranged on the surface of the first linkage disc 7, and the push blocks 71 are distributed circumferentially in a ring shape.
And the second linkage disc 8 is fixedly arranged on the surface of the rotating shaft 4, the surface of the second linkage disc 8, which is close to one side of the first linkage disc 7, is provided with telescopic blocking blocks 811, the blocking blocks 811 are distributed circumferentially in a ring shape, and the blocking blocks 811 can be matched with the pushing blocks 71.
When the first linkage disc 7 and the second linkage disc 8 are in a mutually separated state, the movable rotor module 31 and the rotating shaft 4 are in a relative rotation state, when the first linkage disc 7 approaches the second linkage disc 8, the push block 71 is matched with the stop block 811, the movable rotor module 31 and the rotating shaft 4 are in a locking state, and the rotation of the movable rotor module 31 can provide driving force for the rotation of the rotating shaft 4.
Push blocks 71 are arranged in the two rotation directions of the first linkage disc 7, and blocking blocks 811 are arranged in the two rotation directions of the second linkage disc 8; when the block 811 in one direction extends out of the surface of the second linkage disc 8, the block 811 in the other direction is accommodated in the second linkage disc 8, and the block 811 extending out of the surface of the second linkage disc 8 can be matched with the push block 71 in the corresponding rotation direction of the surface of the first linkage disc 7.
The push block 71 and the stop block 811 are respectively arranged in the two rotation directions of the first linkage disc 7 and the second linkage disc 8, so that the movable rotor module 31 can provide driving force for the rotating shaft 4 in both the forward rotation direction and the reverse rotation direction.
Meanwhile, the movable rotor module 31 and the rotating shaft 4 are linked in a mode of matching the push block 71 and the blocking block 811, so that when the rotating speed of the movable rotor module 31 is the same as that of the lower rotating shaft 4, driving force is provided for the rotating shaft 4, and the problem that when the rotating shaft 4 starts the movable rotor module 31 in an operating state, large friction loss is generated due to large rotating speed difference between the rotating shaft 4 and the movable rotor module 31 is avoided, and the clutch of the automobile can be solved.
The notch 81 has been seted up on the surface of linkage dish two 8, and the inside slidable mounting of notch 81 has backup pad 812, and the holding block 811 is located the inside of notch 81, is equipped with the extension spring between holding block 811 and the backup pad 812, is equipped with reset spring between the bottom surface of backup pad 812 and notch 81.
The guide slot 82 of cross distribution has been seted up to the inside of linkage dish two 8, and two cross grooves of guide slot 82 inside are the arc groove, and two cross grooves extend along the two rotation direction of linkage dish two 8 respectively and distribute, and two cross grooves keep away from the one end at linkage dish two 8 centers and communicate with the notch 81 on two directions that correspond respectively.
The pushing balls 821 are arranged in the two crossed grooves, inward protruding limiting portions 822 are arranged at positions, close to the crossing points, of the arc edges of the outer sides of the two crossed grooves, limiting plates 823 are rotatably arranged on the surfaces of the limiting portions 822, and the limiting plates 823 can rotate 90 degrees from the positions shown in fig. 13 to the rolling directions of the pushing balls 821.
When the rotating shaft 4 rotates, the pushing balls 821 roll in a direction away from the center of the second linkage disc 8 under the action of centrifugal force, the pushing balls 821 in the intersecting grooves with the extending and distributing directions opposite to the rotating direction of the rotating shaft 4 in the two intersecting grooves roll along the inner arc edges of the intersecting grooves and push the corresponding limiting plates 823 to move to the other ends of the intersecting grooves, and the supporting plates 812 in the corresponding notch 81 are pushed to move to the outer side of the second linkage disc 8 under the action of the centrifugal force, so that the blocking blocks 811 in the corresponding notch 81 are pushed out.
The push ball 821 in the other cross groove is limited to roll under the action of the limiting part 822, and the block 811 in the corresponding notch 81 does not extend out of the surface of the second linkage disc 8 under the action of the return spring, so that the block 811 in the corresponding direction is automatically pushed out of the surface of the second linkage disc 8 according to the rotation direction of the rotating shaft 4.
The second linkage disc 8 is made of a magnetic isolation material, the limiting plate 823 is made of a magnetic attraction material, the pushing ball 821 is made of a magnetic material, and one end, close to the center of the second linkage disc 8, of the cross groove is provided with the magnetic material and used for resetting the pushing ball 821, and meanwhile the pushing ball 821 is prevented from pushing the limiting plate 823 away when the second linkage disc 8 does not rotate.
The second linkage disc 8 adopts a magnetism isolating material, so that the magnetic field generated by the stator module 2 can be prevented from influencing the push ball 821, the push ball 821 adopts a magnetic material design, the limiting plate 823 adopts a magnetic attraction material design, and when the push ball 821 is reset, the attraction force of the push ball 821 to the limiting plate 823 can be utilized to reset the limiting plate 823.
An adjusting box 9 is fixedly arranged between the two corresponding stator modules 2 of the linkage assembly, a fluted disc 91 is rotatably arranged in the adjusting box 9, a plurality of arc-shaped adjusting grooves 911 are formed in the side surface of the fluted disc 91, and the arc-shaped adjusting grooves 911 are distributed in the annular circumferential direction; a plurality of fan-shaped magnetism isolating plates 92 are radially and slidably arranged in the adjusting box 9, guide posts are arranged on the surfaces of the magnetism isolating plates 92, and the guide posts are located in the adjusting groove 911.
When the plurality of magnetic isolation plates 92 are sequentially contacted, the magnetic isolation plates 92 are combined to form a circular ring, the magnetic isolation plates 92 are made of magnetic isolation materials, when the fluted disc 91 rotates, the adjusting groove 911 is matched with the guide pillar to drive the magnetic isolation plates 92 to radially slide, and when the plurality of magnetic isolation plates 92 are combined to form the circular ring, at least one side of the magnetic isolation plates 92 is in a non-connected state with a power supply, so that a magnetic field generated by the stator module 2 connected with the power supply is prevented from acting on a rotor module at the other side of the magnetic isolation plates 92, and the directional effect of the stator module 2 is mentioned.
The surface of swivel 6 is equipped with telescopic briquetting 61, briquetting 61 is the arch, the inside axial slidable mounting of swivel 6 has wedge pole 62, the one end and the first 7 fixed connection of linkage disc of wedge pole 62 are equipped with compression spring between the other end and the swivel 6, the wedge end of wedge pole 62 corresponds with briquetting 61, when briquetting 61 moves to the inside direction of swivel 6, briquetting 61 promotes wedge pole 62 and removes, wedge pole 62 drives linkage disc one 7 to the direction removal of keeping away from linkage disc two 8, make the ejector pad 71 on linkage disc one 7 surface separate with the dog 811 on linkage disc two 8 surfaces.
The inner annular surface of the magnetism isolating plate 92 is matched with the surface of the swivel 6, when the magnetism isolating plate 92 moves towards the center direction of the adjusting box 9, the magnetism isolating plate can be contacted with the pressing block 61, the magnetism isolating effect can be improved, meanwhile, the pressing block 61 can be pushed to move towards the inner direction of the swivel 6, and the pressing block 61 adopts an arch-shaped design, so that the swivel 6 can be pushed by the magnetism isolating plate 92 when rotating forwards or reversely.
The fixed rotor modules 3 are two groups, and the two groups of fixed rotor modules 3 are symmetrically distributed on two sides of a radial center plane of a stator formed by a plurality of stator modules 2; when there are an even number of movable rotor modules 31, two movable rotor modules 31 are in a group, and two movable rotor modules 31 in the same group are symmetrically distributed on two sides of the radial center plane.
When the number of the movable rotor modules 31 is odd, one movable rotor module 31 is a group, the movable rotor modules are arranged on the surface of the rotating shaft 4 by taking the radial center plane as a symmetrical plane, the other movable rotor modules 31 are a group, and the two movable rotor modules 31 in the same group are symmetrically distributed on two sides of the radial center plane; the connection states of the two movable rotor modules 31 in the same group and the rotating shaft 4 are the same, and the driving force born by the surface of the rotating shaft 4 can be balanced by the distributed design of the fixed rotor modules 3 and the movable rotor modules 31.
The surface of the fluted disc 91 is meshed with a transmission gear 11; the inside rotation of casing 1 installs transmission shaft 10, transmission shaft 10 is rotated by micro motor drive, drive gear 11 is located the surface of transmission shaft 10, the keyway has been seted up on the surface of transmission shaft 10, radial slidable mounting in the inner ring surface of drive gear 11 has fixture block 111, fixture block 111 can cooperate with the keyway, fixture block 111 is driven by the electromagnetism piece, the inside of drive gear 11 of the keyway one side is kept away from at fixture block 111 is installed to the electromagnetism piece, when the electromagnetism piece switch on, can produce magnetic force to fixture block 111, when fixture block 111 cooperates with the keyway, drive gear 11 rotates with transmission shaft 10 in step, when fixture block 111 and keyway separate, drive gear 11 does not rotate along with transmission shaft 10.
Referring to fig. 17, a low-loss switched reluctance motor control system includes a rotational speed and torque setting identification module and a power control module; the rotating speed and torque setting identification module is used for setting the operating rotating speed and the load torque of the switched reluctance motor and simultaneously identifying and acquiring the rotating speed and the load torque of the switched reluctance motor.
The power supply control module comprises a stator winding circuit control module and an electromagnetic block power supply connection control module; the stator winding circuit control module is used for setting the running rotating speed and the load torque of the switched reluctance motor set by the identification module according to the rotating speed and the torque, and switching on a power supply for the windings in the corresponding stator module 2; the electromagnetic block power-on control module is used for setting the running rotating speed and the load torque of the switched reluctance motor set by the identification module according to the rotating speed and the torque, and switching on the power supply for the corresponding electromagnetic block.
Low loss switched reluctance motor principle of operation:
When the switch reluctance motor is used, the number of groups of the stator module 2 which is connected with a power supply is selected according to the load torque and the rotating speed of the switch reluctance motor, so that the rotor module which is used for driving the corresponding number of groups drives the rotating shaft 4 to rotate, the rotating speed and the rotating torque of the rotating shaft 4 meet the requirements, after the corresponding rotor module is determined, the micro motor is started to drive the transmission shaft 10 to rotate, the electromagnetic block in the corresponding transmission gear 11 is connected with the power supply, the clamping block 111 is matched with the key groove on the surface of the transmission shaft 10 by the electromagnetic block, and the transmission shaft 10 rotates to drive the corresponding transmission gear 11 to rotate.
The transmission gear 11 is meshed with the fluted disc 91 to drive the fluted disc 91 to rotate, when the fluted disc 91 rotates, the adjusting groove 911 is matched with the guide pillar to drive the magnetism isolating plate 92 to radially slide, when the magnetism isolating plate 92 is separated from the swivel 6, the first linkage disc 7 moves towards the second linkage disc 8 under the action of the compression spring at one end of the wedge-shaped rod 62, and when the movable rotor module 31 rotates, the push block 71 on the surface of the first linkage disc 7 is matched with the block 811 on the surface of the second linkage disc 8 to drive the rotating shaft 4 to rotate.
When the number of the movable rotor modules 31 is required to be increased while the switched reluctance motor is in the running state, the first linkage disc 7 is moved in the direction of the second linkage disc 8 in the above manner, and when the rotational speed of the increased movable rotor modules 31 reaches the rotational speed of the lower rotating shaft 4, the push blocks 71 on the surface of the first linkage disc 7 are matched with the block 811 on the surface of the second linkage disc 8 at this time, and when the movable rotor modules 31 continue to rotate, the driving force is provided for the rotating shaft 4.
When the switch reluctance motor is in an operating state and the number of movable rotor modules 31 is required to be reduced, the fluted disc 91 is reversely driven to rotate in the above manner, so that the plurality of magnetic isolation plates 92 are combined to form a circular ring, the magnetic isolation plates 92 are utilized to push the pressing block 61 to move towards the inside of the swivel 6, and the first linkage disc 7 and the second linkage disc 8 are separated through the wedge-shaped rod 62.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A low loss switched reluctance motor comprising a housing (1), characterized in that: a plurality of groups of stator modules (2) are fixedly arranged in the machine shell (1), a rotating shaft (4) is rotatably arranged in the machine shell (1), a plurality of groups of rotor modules are arranged on the surface of the rotating shaft (4), and the rotor modules correspond to the stator modules (2) one by one;
The rotor modules comprise fixed rotor modules (3) and movable rotor modules (31), the fixed rotor modules (3) are fixedly arranged on the surface of the rotating shaft (4), and the movable rotor modules (31) can be rotatably arranged on the surface of the rotating shaft (4) through bearings (5);
the movable rotor module (31) can be locked on the surface of the rotating shaft (4), and when the windings inside the stator modules (2) corresponding to the movable rotor module (31) are powered on, the movable rotor module (31) and the rotating shaft (4) are in a locking state;
a linkage assembly is arranged between the movable rotor module (31) and the rotating shaft (4), the movable rotor module (31) and the rotating shaft (4) are in a locking state or a relative rotating state by utilizing the linkage assembly, and the linkage assembly comprises:
The swivel (6) is fixedly arranged on the outer ring surface of the bearing (5) and is fixedly connected with the movable rotor module (31);
the first linkage disc (7) is axially and slidably arranged on the surface of the swivel (6), pushing blocks (71) are fixedly arranged on the surface of the first linkage disc (7), and the pushing blocks (71) are circumferentially distributed in a ring shape;
The second linkage disc (8) is fixedly arranged on the surface of the rotating shaft (4), telescopic blocking blocks (811) are arranged on the surface, close to one side of the first linkage disc (7), of the second linkage disc (8), the blocking blocks (811) are distributed circumferentially in a ring shape, and the blocking blocks (811) can be matched with the pushing blocks (71);
An adjusting box (9) is fixedly arranged between the two corresponding stator modules (2) of the linkage assembly, a fluted disc (91) is rotatably arranged in the adjusting box (9), a plurality of arc-shaped adjusting grooves (911) are formed in the side surface of the fluted disc (91), and the arc-shaped adjusting grooves (911) are distributed in an annular circumferential direction;
A plurality of fan-shaped magnetic isolation plates (92) are radially and slidably arranged in the adjusting box (9), guide posts are arranged on the surfaces of the magnetic isolation plates (92), and the guide posts are positioned in the adjusting groove (911);
The magnetic isolation plates (92) are combined to form a circular ring when being contacted in sequence, and the magnetic isolation plates (92) are made of magnetic isolation materials;
the surface of the swivel (6) is provided with a telescopic pressing block (61), a wedge-shaped rod (62) is axially and slidably arranged in the swivel (6), one end of the wedge-shaped rod (62) is fixedly connected with the first linkage disc (7), a compression spring is arranged between the other end of the wedge-shaped rod and the swivel (6), and the wedge-shaped end of the wedge-shaped rod (62) corresponds to the pressing block (61);
The inner annular surface of the magnetism isolating plate (92) is matched with the surface of the swivel (6), and the magnetism isolating plate (92) can be contacted with the pressing block (61) when moving towards the center direction of the adjusting box (9).
2. The low-loss switched reluctance motor of claim 1 wherein: push blocks (71) are arranged in the two rotation directions of the first linkage disc (7), and blocking blocks (811) are arranged in the two rotation directions of the second linkage disc (8);
When the block (811) in one direction extends out of the surface of the second linkage disc (8), the block (811) in the other direction is accommodated in the second linkage disc (8), and the block (811) extending out of the surface of the second linkage disc (8) can be matched with the push block (71) in the corresponding rotation direction of the surface of the first linkage disc (7).
3. The low-loss switched reluctance motor of claim 2 wherein: a notch (81) is formed in the surface of the second linkage disc (8), a supporting plate (812) is slidably arranged in the notch (81), a block (811) is positioned in the notch (81), a telescopic spring is arranged between the block (811) and the supporting plate (812), and a reset spring is arranged between the supporting plate (812) and the bottom surface of the notch (81);
The inside of the second linkage disc (8) is provided with guide grooves (82) which are distributed in a crossing way, two intersecting grooves in the guide grooves (82) are arc-shaped grooves, the two intersecting grooves are respectively distributed in an extending way along two rotating directions of the second linkage disc (8), and one ends of the two intersecting grooves, which are far away from the center of the second linkage disc (8), are respectively communicated with the corresponding notch (81) in two directions;
Push balls (821) are placed in the two crossed grooves, limiting portions (822) protruding inwards are arranged at positions, close to the crossing points, of arc edges on the outer sides of the two crossed grooves, and limiting plates (823) are rotatably mounted on the surfaces of the limiting portions (822).
4. A low loss switched reluctance machine according to claim 3, wherein: the second linkage disc (8) is made of a magnetic isolation material, the limiting plate (823) is made of a magnetic attraction material, and the pushing ball (821) is made of a magnetic material.
5. The low-loss switched reluctance machine of claim 4 wherein: the fixed rotor modules (3) are two groups, and the two groups of fixed rotor modules (3) are symmetrically distributed on two sides of a radial center plane of a stator formed by a plurality of stator modules (2);
When the number of the movable rotor modules (31) is even, the two movable rotor modules (31) are in a group, and the two movable rotor modules (31) in the same group are symmetrically distributed on two sides of the radial center plane;
When the number of the movable rotor modules (31) is odd, one movable rotor module (31) is a group, the movable rotor modules are arranged on the surface of the rotating shaft (4) by taking the radial center plane as a symmetrical plane, the other two movable rotor modules (31) are a group, and the two movable rotor modules (31) in the same group are symmetrically distributed on two sides of the radial center plane;
The connection states of the two movable rotor modules (31) in the same group and the rotating shaft (4) are the same.
6. The low-loss switched reluctance machine of claim 5 wherein: the surface of the fluted disc (91) is meshed with a transmission gear (11);
the inside rotation of casing (1) is installed transmission shaft (10), drive gear (11) are located the surface of transmission shaft (10), the keyway has been seted up on the surface of transmission shaft (10), radial slidable mounting in inner ring surface of drive gear (11) has fixture block (111), fixture block (111) can with the keyway cooperation, fixture block (111) are driven by the electromagnetism piece.
7. A low loss switched reluctance motor control system employing the low loss switched reluctance motor of claim 6 comprising an SRD system characterized by: the SRD system comprises:
The rotating speed and torque setting identification module is used for setting the running rotating speed and the load torque of the switched reluctance motor and simultaneously identifying and acquiring the rotating speed and the load torque of the switched reluctance motor running;
The power supply control module comprises a stator winding circuit control module and an electromagnetic block power supply connection control module;
the stator winding circuit control module is used for switching on a power supply for windings in the corresponding stator module (2) according to the running rotating speed and the load torque of the switched reluctance motor set by the rotating speed and torque setting identification module;
the electromagnetic block power-on control module is used for switching on the power supply for the corresponding electromagnetic block according to the running rotating speed and the load torque of the switched reluctance motor set by the rotating speed and torque setting identification module.
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