CN112134431A - Three-phase asynchronous motor capable of improving locked rotor torque and reducing locked rotor current - Google Patents
Three-phase asynchronous motor capable of improving locked rotor torque and reducing locked rotor current Download PDFInfo
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- CN112134431A CN112134431A CN202010926071.XA CN202010926071A CN112134431A CN 112134431 A CN112134431 A CN 112134431A CN 202010926071 A CN202010926071 A CN 202010926071A CN 112134431 A CN112134431 A CN 112134431A
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- 238000004804 winding Methods 0.000 claims abstract description 23
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 44
- 239000011889 copper foil Substances 0.000 claims description 24
- 229910052802 copper Inorganic materials 0.000 claims description 14
- 239000010949 copper Substances 0.000 claims description 14
- 238000010030 laminating Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 210000001503 joint Anatomy 0.000 claims 1
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 230000005672 electromagnetic field Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/30—Structural association of asynchronous induction motors with auxiliary electric devices influencing the characteristics of the motor or controlling the motor, e.g. with impedances or switches
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- H02K11/044—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/04—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for rectification
- H02K11/049—Rectifiers associated with stationary parts, e.g. stator cores
- H02K11/05—Rectifiers associated with casings, enclosures or brackets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/30—Structural association with control circuits or drive circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/12—Asynchronous induction motors for multi-phase current
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a three-phase asynchronous motor capable of improving locked rotor torque and reducing locked rotor current, which comprises a base, an end cover, a cover shell, a rectifier, a junction box, a rotating shaft and an eccentric driving part, wherein the front end of the base is provided with a vertical end cover through a bolt, and the rear end of the base is provided with a horizontal cover shell through a bolt. The invention can improve the locked-rotor torque and reduce the locked-rotor current while meeting the normal power requirement, can automatically control and increase the torque when the motor is locked-rotor, thereby forcing the motor to overcome the overhigh load and restore the normal rotation again, and can automatically connect the consumption resistor into the circuit when the motor is locked-rotor, thereby reducing the locked-rotor current, reducing the damage to the stator winding, prolonging the service life of the motor, saving the maintenance time, reducing the unnecessary resource waste, and being more environment-friendly and efficient.
Description
Technical Field
The invention relates to a three-phase asynchronous motor, in particular to a three-phase asynchronous motor which can improve locked-rotor torque and reduce locked-rotor current.
Background
The motor stalling is a condition that the motor still outputs torque when the rotating speed is 0 revolution, generally caused by mechanical or human reasons, and is a phenomenon that the motor cannot be started or stopped due to the reasons of overlarge motor load, dragging mechanical failure, bearing damage, sweeping and the like, and when the motor stalls, the power factor is extremely low, the current (called stalling current) during stalling can reach 7 times of rated current at most, the motor can be burnt out after a little long time, so that the motor is protected by improving the stalling torque and reducing the stalling current, and the service life of the motor is prolonged. At present, most of motors with high power are adopted to reduce the probability of motor stalling, and the method can cause certain resource waste, so that a novel device is needed to solve the problem.
Disclosure of Invention
The invention aims to provide a three-phase asynchronous motor for improving locked-rotor torque and reducing locked-rotor current, and the three-phase asynchronous motor is used for solving the technical problem.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an improve stifled three-phase asynchronous motor who changes torque and reduce stifled commentaries on classics electric current, includes frame, end cover, housing, rectifier, terminal box, pivot, eccentric drive part, a vertical end cover is installed through the bolt to the frame front end, a horizontally housing is installed through the bolt to the frame rear end, the anterior right-hand member of frame is fixed with a horizontally rectifier, the rectifier right-hand member is fixed with a horizontally terminal box, frame internally mounted has a horizontally pivot, frame internally mounted has an eccentric drive part.
On the basis of the technical scheme, the eccentric driving part comprises an eccentric mounting seat, eccentric mounting grooves, a limiting seat, eccentric limiting grooves, limiting magnets, eccentric stators, eccentric windings and a control part, the rear part of the rotating shaft is provided with the horizontal eccentric mounting seat, the eccentric mounting seat is provided with the eccentric mounting grooves, the rear end of the eccentric mounting seat is provided with the horizontal limiting seat through screws, the limiting seat is provided with the eccentric limiting grooves in a penetrating manner, the eccentric limiting grooves are butted with the eccentric mounting grooves, the eccentric mounting grooves are internally and movably connected with the limiting magnets respectively, the N poles of the limiting magnets are arranged outwards in the radial direction, the base is internally fixed with the horizontal eccentric stators, the eccentric stators are provided with the eccentric windings, and the control part is arranged on the upper parts of the eccentric stators.
On the basis of the technical scheme, the control part comprises an insulating switch seat, a switch slot, an upper limit platform, a lower limit platform, an upper contact copper foil, a lower contact copper foil, a switch magnet, a contact copper plate and a tension spring, wherein the upper part of the eccentric stator is provided with a horizontal insulating switch seat through a screw, the bottom end of the insulating switch seat is provided with the switch slot, the upper part of the inner wall of the switch slot is fixed with the upper limit platform in two levels, the lower part of the inner wall of the switch slot is fixed with the lower limit platform in two levels, the bottom end of the upper limit platform is respectively fixed with the upper contact copper foil in one level, the top end of the lower limit platform is respectively fixed with the lower contact copper foil in one level, the inside of the switch slot is slidably connected with the switch magnet, the N pole of the switch magnet is radially outwards arranged, the top end of the switch magnet is fixed with the horizontal contact copper plate, and the front and back parts of, and the top ends of the two tension springs are respectively fixed with the upper part of the insulating switch seat.
On the basis of the technical scheme, the inside consumption resistance that is fixed with of terminal box, frame internally mounted has stator winding and rotor, each spacing magnet can slide from top to bottom along each eccentric mounting groove, and the sliding range receives the restriction of each eccentric spacing groove, switch magnet can slide from top to bottom along the switch seat, and can drive contact copper and last contact copper foil or contact copper foil contact laminating down.
Compared with the prior art, the invention has the following advantages: the invention can improve the locked-rotor torque and reduce the locked-rotor current while meeting the normal power requirement, can automatically control and increase the torque when the motor is locked-rotor, thereby forcing the motor to overcome the overhigh load and restore the normal rotation again, and can automatically connect the consumption resistor into the circuit when the motor is locked-rotor, thereby reducing the locked-rotor current, reducing the damage to the stator winding, prolonging the service life of the motor, saving the maintenance time, reducing the unnecessary resource waste, and being more environment-friendly and efficient.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the installation of the rotating shaft of the present invention.
Fig. 3 is an installation diagram of the limiting seat of the present invention.
Fig. 4 is a schematic view of the installation of the limiting magnet of the present invention.
Fig. 5 is a schematic view of the installation of the eccentric winding of the present invention.
Fig. 6 is a schematic view of the installation of the switch magnet of the present invention.
FIG. 7 is a schematic diagram of an equivalent circuit of the present invention.
In the figure: 1. the device comprises a base, 2, an end cover, 3, a housing, 4, a rectifier, 5, a junction box, 6, a rotating shaft, 7, an eccentric driving part, 8, an eccentric mounting seat, 9, an eccentric mounting groove, 10, a limiting seat, 11, an eccentric limiting groove, 12, a limiting magnet, 13, an eccentric stator, 14, an eccentric winding, 15, a control part, 16, an insulated switch seat, 17, a switch groove, 18, an upper limiting table, 19, a lower limiting table, 20, an upper contact copper foil, 21, a lower contact copper foil, 22, a switch magnet, 23, a contact copper plate, 24, a tension spring, 25, a consumption resistor, 26 and a stator winding.
Detailed Description
The invention is explained in further detail below with reference to the figures and the specific embodiments.
As shown in fig. 1-7, a three-phase asynchronous motor for improving locked rotor torque and reducing locked rotor current comprises a base 1, an end cover 2, a housing 3, a rectifier 4, a junction box 5, a rotating shaft 6 and an eccentric driving part 7, wherein the vertical end cover 2 is installed at the front end of the base 1 through a bolt, the horizontal housing 3 is installed at the rear end of the base 1 through a bolt, the horizontal rectifier 4 is fixed at the right end of the front part of the base 1, the horizontal junction box 5 is fixed at the right end of the rectifier 4, the horizontal rotating shaft 6 is installed inside the base 1, and the eccentric driving part 7 is installed inside the base 1.
The eccentric driving part 7 comprises an eccentric mounting seat 8, an eccentric mounting groove 9, a limiting seat 10, an eccentric limiting groove 11, a limiting magnet 12, an eccentric stator 13, an eccentric winding 14 and a control part 15, a horizontal eccentric mounting seat 8 is mounted at the rear part of the rotating shaft 6, a plurality of eccentric mounting grooves 9 are formed on the eccentric mounting seat 8, a horizontal limiting seat 10 is installed at the rear end of the eccentric installation seat 8 through a screw, a plurality of eccentric limiting grooves 11 penetrate through the limiting seat 10, each eccentric limiting groove 11 is butted with each eccentric installation groove 9, a limiting magnet 12 is movably connected in each eccentric installation groove 9, the N pole of each limiting magnet 12 is arranged outwards in the radial direction, a horizontal eccentric stator 13 is fixed in the base 1, a plurality of eccentric windings 14 are mounted on the eccentric stator 13, and a control part 15 is mounted on the upper part of the eccentric stator 13.
The control part 15 includes insulating switch seat 16, switch slot 17, last spacing platform 18, lower spacing platform 19, goes up contact copper foil 20, lower contact copper foil 21, switch magnet 22, contact copper 23, extension spring 24, eccentric stator 13 upper portion has a horizontally insulating switch seat 16 through the mounting screw, insulating switch seat 16 bottom is opened has a switch slot 17, switch slot 17 inner wall upper portion is fixed with two horizontally last spacing platforms 18, switch slot 17 inner wall lower part is fixed with two horizontally lower spacing platforms 19, two go up spacing platform 18 bottom and be fixed with a horizontally last contact copper foil 20 respectively, two spacing platform 19 top is fixed with a horizontally lower contact copper foil 21 respectively down, the inside sliding connection of switch slot 17 has a switch magnet 22, switch magnet 22's the N utmost point radially outwards sets up, switch magnet 22 top is fixed with a horizontal contact copper foil 23, two extension springs 24 are respectively fixed on the front portion and the rear portion of the top end of the contact copper plate 23, and the top ends of the two extension springs 24 are respectively fixed with the upper portion of the insulation switch base 16.
Terminal box 5 internally fixed has a consumption resistance 25, frame 1 internally mounted has stator winding 26 and rotor, each spacing magnet 12 can slide from top to bottom along each eccentric mounting groove 9, and the sliding range receives the restriction of each eccentric spacing groove 11, switch magnet 22 can slide from top to bottom along the switch seat, and can drive contact copper 23 and last contact copper foil 20 or contact copper foil 21 contact laminating down.
The working principle of the invention is as follows: when the three-phase asynchronous motor is not powered on, the switch magnet 22 enables the contact copper plate 23 to be always in contact joint with the two contact copper foils 20 under the action of the tension spring 24, the rectifier 4, the eccentric winding 14 and the consumption resistor 25 are connected into a circuit, the power supply of the three-phase asynchronous motor is switched on at the moment, alternating current can be supplied to the stator winding 26, the rectifier 4 and the consumption resistor 25, the stator winding 26 generates a rotating magnetic field to drive the stator to rotate, the rectifier 4 generates direct current to supply the direct current to the eccentric winding 14, the eccentric winding 14 generates an electromagnetic field with an S pole outside through a stator iron core to drive each limit magnet 12 to be jointed with the bottom end of each eccentric mounting groove 9, the rotating shaft 6 is driven to rotate under the action of homopolar repulsion, when the rotating shaft 6 gradually reaches a normal rotating speed, each limit magnet 12 overcomes the gravity and the repulsion force of homopolar repulsion under the action of the centrifugal force, thereby extending out of the eccentric mounting groove 9, the distance between the limiting magnets 12 and the switch magnet 22 is reduced, so that the switch magnet 22 can move downwards along the switch groove 17 under the action of heteropolar attraction, the contact copper plate 23 is contacted and jointed with the two lower contact copper foils 21, at the moment, the rectifier 4 and the consumption resistor 25 are removed from the circuit, the power supply only supplies power to the stator winding 26, the direct current supplied to the eccentric winding 14 is removed, and the aim of normal operation is achieved, when the motor is locked, because the rotating shaft 6 stops rotating, each eccentric magnet is not influenced by the centrifugal force, the eccentric magnet adjacent to the switch magnet 22 is not enough to extend out of the eccentric mounting seat 8 under the attraction of the switch magnet 22, and the switch magnet 22 is also enabled to recover the contact copper plate 23 to be contacted and jointed with the two upper contact copper foils 20 under the action of the tension spring 24, therefore, the power supply of the rectifier 4 is switched on again, then the stator core generates an electromagnetic field with the S pole outside to drive each limiting magnet 12 to be attached to the bottom end of each eccentric mounting groove 9, and simultaneously the rotating shaft 6 is driven to rotate under the action of homopolar repulsion, so that the motor can be restored to rotate under the dual action of the stator winding 26 and the eccentric winding 14.
The foregoing is a preferred embodiment of the present invention, and it will be apparent to those skilled in the art that variations, modifications, substitutions and alterations can be made in the embodiment without departing from the principles and spirit of the invention.
Claims (4)
1. The utility model provides an improve stifled three-phase asynchronous motor who changes torque and reduce stifled commentaries on classics electric current, includes frame (1), end cover (2), housing (3), rectifier (4), terminal box (5), pivot (6), eccentric drive part (7), its characterized in that: the improved motor base is characterized in that a vertical end cover (2) is installed at the front end of the base (1) through a bolt, a horizontal cover shell (3) is installed at the rear end of the base (1) through a bolt, a horizontal rectifier (4) is fixed at the front right end of the base (1), a horizontal junction box (5) is fixed at the right end of the rectifier (4), a horizontal rotating shaft (6) is installed inside the base (1), and an eccentric driving part (7) is installed inside the base (1).
2. The three-phase asynchronous motor for increasing locked rotor torque and reducing locked rotor current according to claim 1, wherein: the eccentric driving part (7) comprises an eccentric mounting seat (8), eccentric mounting grooves (9), a limiting seat (10), an eccentric limiting groove (11), limiting magnets (12), an eccentric stator (13), an eccentric winding (14) and a control part (15), the rear part of the rotating shaft (6) is provided with the horizontal eccentric mounting seat (8), the eccentric mounting seat (8) is provided with a plurality of eccentric mounting grooves (9), the rear end of the eccentric mounting seat (8) is provided with the horizontal limiting seat (10) through a screw, the limiting seat (10) is provided with a plurality of eccentric limiting grooves (11) in a penetrating way, each eccentric limiting groove (11) is in butt joint with each eccentric mounting groove (9), each eccentric mounting groove (9) is internally and movably connected with one limiting magnet (12), the N pole of each limiting magnet (12) is arranged outwards in a radial direction, and the horizontal eccentric stator (13) is fixed in the machine base (1), the eccentric stator (13) is provided with a plurality of eccentric windings (14), and the upper part of the eccentric stator (13) is provided with a control part (15).
3. The three-phase asynchronous motor for increasing locked rotor torque and reducing locked rotor current according to claim 2, wherein: the control part (15) comprises an insulating switch seat (16), a switch slot (17), an upper limiting table (18), a lower limiting table (19), an upper contact copper foil (20), a lower contact copper foil (21), a switch magnet (22), a contact copper plate (23) and a tension spring (24), wherein the upper part of the eccentric stator (13) is provided with a horizontal insulating switch seat (16) through a screw, the bottom end of the insulating switch seat (16) is provided with the switch slot (17), the upper part of the inner wall of the switch slot (17) is fixed with the upper limiting table (18) with two levels, the lower part of the inner wall of the switch slot (17) is fixed with the lower limiting table (19) with two levels, the bottom end of the upper limiting table (18) is respectively fixed with the upper contact copper foil (20) with one level, the top end of the lower limiting table (19) is respectively fixed with the lower contact copper foil (21) with one level, and the switch magnet (22) is connected inside the switch, the N pole of switch magnet (22) radially outwards sets up, switch magnet (22) top is fixed with a horizontal contact copper (23), contact copper (23) top front and back two parts respectively are fixed with an extension spring (24), two extension spring (24) top is fixed with insulating switch seat (16) upper portion respectively.
4. A three-phase asynchronous motor with increased locked-rotor torque and reduced locked-rotor current according to claim 1 or 2, characterized in that: terminal box (5) internal fixation has a consumption resistance (25), frame (1) internally mounted has stator winding (26) and rotor, each spacing magnet (12) can slide from top to bottom along each eccentric mounting groove (9), and the sliding range receives the restriction of each eccentric spacing groove (11), switch magnet (22) can slide from top to bottom along the switch seat, and can drive contact copper (23) and last contact copper foil (20) or contact copper foil (21) contact laminating down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010926071.XA CN112134431B (en) | 2020-09-07 | 2020-09-07 | Three-phase asynchronous motor capable of improving locked rotor torque and reducing locked rotor current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010926071.XA CN112134431B (en) | 2020-09-07 | 2020-09-07 | Three-phase asynchronous motor capable of improving locked rotor torque and reducing locked rotor current |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112134431A true CN112134431A (en) | 2020-12-25 |
| CN112134431B CN112134431B (en) | 2021-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010926071.XA Active CN112134431B (en) | 2020-09-07 | 2020-09-07 | Three-phase asynchronous motor capable of improving locked rotor torque and reducing locked rotor current |
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| Country | Link |
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| CN (1) | CN112134431B (en) |
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|---|---|---|---|---|
| CN2184288Y (en) * | 1993-09-02 | 1994-11-30 | 湖北省云梦县电机厂 | M-phase frequency sensitive variable voltage actuator and electromotor with actuatoe |
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| CN104348272A (en) * | 2013-08-11 | 2015-02-11 | 谢向荣 | Direct current electric motor |
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-
2020
- 2020-09-07 CN CN202010926071.XA patent/CN112134431B/en active Active
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| CN112134431B (en) | 2021-06-22 |
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Effective date of registration: 20211231 Address after: 325000 room 2301, building 1, Lianhua building, Lianhua Road, Danan street, Lucheng District, Wenzhou City, Zhejiang Province Patentee after: Wenzhou Guangzhong Technology Co.,Ltd. Address before: No.122, 4th village, Tianshan, Changning District, Shanghai, 200050 Patentee before: Jiang Ying Patentee before: Solemnly |
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