CN117833584A - Low-rotation-speed high-torque synchronous motor and manufacturing method thereof - Google Patents
Low-rotation-speed high-torque synchronous motor and manufacturing method thereof Download PDFInfo
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- CN117833584A CN117833584A CN202211193125.1A CN202211193125A CN117833584A CN 117833584 A CN117833584 A CN 117833584A CN 202211193125 A CN202211193125 A CN 202211193125A CN 117833584 A CN117833584 A CN 117833584A
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 54
- 239000010959 steel Substances 0.000 claims abstract description 54
- 239000000463 material Substances 0.000 claims abstract description 17
- 230000000903 blocking effect Effects 0.000 claims abstract description 6
- 238000005070 sampling Methods 0.000 claims description 21
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 15
- 238000004364 calculation method Methods 0.000 claims description 11
- 230000000087 stabilizing effect Effects 0.000 claims description 9
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 239000003063 flame retardant Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 4
- 150000002910 rare earth metals Chemical class 0.000 claims description 4
- 230000007935 neutral effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 230000009471 action Effects 0.000 abstract description 4
- 230000002411 adverse Effects 0.000 abstract description 3
- 230000009466 transformation Effects 0.000 abstract description 2
- 238000004804 winding Methods 0.000 description 7
- 238000005265 energy consumption Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000007943 implant Substances 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The present invention relates to: a plurality of magnetic steels are implanted on a rotor of the low-rotation-speed high-torque synchronous motor, a gap between two adjacent magnetic steels is filled with a magnetic blocking material, a steel sleeve is further arranged on the outer side of each magnetic steel on the rotor, and the magnetic steels are arranged in a stepped parallel mode; the manufacturing method of the low-rotation-speed high-torque synchronous motor comprises the following steps of 1, taking a rotor parent body of a three-phase asynchronous motor for transformation; step 2: manufacturing a motor protection device; step 3: assembling; the invention has the following advantages: the permanent magnets are implanted into the rotor to thoroughly eliminate exciting current, so that rotor loss is eliminated, the magnetic steel adopts unique shape arrangement, and the magnetic steel is matched with the action of the magnetic resistance material to synchronize the waveforms of the rotor magnetic field and the stator magnetic field to form a pure sine wave magnetic field, so that adverse effects of harmonic waves are eliminated, demagnetizing and reverse torque are not generated, and the temperature rise is low, so that a remarkable energy-saving effect is generated.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a low-rotation-speed high-torque synchronous motor and a manufacturing method thereof.
Background
Most of motors used in the current market are high-energy-consumption low-efficiency three-phase asynchronous motors, and after three-phase symmetrical alternating current is fed through three-phase stator windings, a rotating magnetic field is generated, the rotating magnetic field cuts rotor windings, so that induced current is generated in the rotor windings, current-carrying rotor conductors generate electromagnetic force under the action of the rotating magnetic field of the stator, and electromagnetic torque is formed on a motor rotating shaft to drive the motor to rotate. As the load changes, the rated speed of the asynchronous motor also changes, which greatly reduces the efficiency.
In addition, the permanent magnet material of the common permanent magnet synchronous motor used in the current market is inserted in the middle of the rotor in a V-shaped, U-shaped or composite mode by rectangular square blocks, and the technology can only solve the problem of slot tooth harmonic wave through a stator iron core chute because the rotor magnetic steel cannot be arranged in a chute way, and cannot generate pure sine waves.
Disclosure of Invention
The technical problems to be solved by the invention are the high energy consumption of the three-phase asynchronous motor and the technical defects of the common permanent magnet synchronous motor, and the low-rotation-speed high-torque synchronous motor is provided.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: the utility model provides a high moment of torsion synchronous motor of low rotational speed, includes stator, rotor, bearing cap, end cover, pivot, bearing, fan, housing, the rotor is fixed in the pivot to be placed in the stator, stator one end is equipped with the end cover, is equipped with the bearing cap on the end cover, the one end that the pivot is close to the end cover is equipped with the bearing, the bearing is installed on the bearing cap, the one end that the bearing was kept away from to the pivot is equipped with the fan, and the fan upper cover has the housing, the one end that the end cover was kept away from at the stator is installed to the housing, still be equipped with the terminal box on the stator, implant a plurality of magnet steel on the rotor, it has the magnetism blocking material to fill in the space between two adjacent magnet steel, on the rotor, the outside of magnet steel still is equipped with the steel bushing.
Furthermore, the magnetic steels are arranged in a stepped and parallel mode.
Further, the magnetic steel comprises a plurality of silicon steel sheets, the components of the silicon steel sheets contain rare earth, and the magnetic resistance material is a fireproof high-temperature-resistant flame-retardant belt and is wound on the outer sides of the silicon steel sheets.
Further, a motor protection device is arranged in the junction box
Further, the motor protection device comprises a voltage and current sampling unit, an AC voltage stabilizing module, a rotating speed sampling unit, a temperature sampling unit, a single chip microcomputer calculation processing unit, a time delay circuit and a switch, wherein the input end of the single chip microcomputer calculation processing unit is connected with the voltage and current sampling unit, the AC voltage stabilizing module, the rotating speed sampling unit and the temperature sampling unit, the output end of the single chip microcomputer calculation processing unit is connected with the input end of the time delay circuit, the output end of the time delay circuit is connected with a relay, the output end of the relay is connected with a neutral line, the input end of the voltage and current sampling unit is connected with an A phase, a B phase and a C phase of a three-phase power supply, the input end of the AC voltage stabilizing module is connected with the C phase of the three-phase power supply, and the switch is installed on a fire wire of the three-phase power supply.
The manufacturing method of the low-rotation-speed high-torque synchronous motor specifically comprises the following steps:
step 1: the rotor parent body of the three-phase asynchronous motor is modified: cutting off part of the iron core on the outer circumference of the rotor according to the size, shape and installation position of the magnetic steel, implanting the magnetic steel on the rotor, filling magnetic resistance materials in gaps between the magnetic steel, and installing a steel sleeve on the outer side of the magnetic steel on the rotor;
step 2: manufacturing a motor protection device: all parts of circuit components in the motor protection device are connected and installed in the junction box.
Step 3: and (3) assembling: and the modified rotor, the junction box and other components are installed together.
The invention has the following advantages: the permanent magnets are implanted into the rotor to thoroughly eliminate exciting current, so that rotor loss is eliminated, the magnetic steel adopts unique shape arrangement, and the magnetic steel is matched with the action of the magnetic resistance material to synchronize the waveforms of the rotor magnetic field and the stator magnetic field to form a pure sine wave magnetic field, so that adverse effects of harmonic waves are eliminated, demagnetizing and reverse torque are not generated, and the temperature rise is low, so that a remarkable energy-saving effect is generated.
Drawings
Fig. 1 is a schematic structural diagram of a low-rotation-speed high-torque synchronous motor according to the present invention.
Fig. 2 is a schematic diagram of a rotor structure of a low-rotation-speed high-torque synchronous motor according to the present invention.
Fig. 3 is a schematic longitudinal section structure of a rotor of a low-rotation-speed high-torque synchronous motor according to the present invention.
Fig. 4 is a circuit diagram of a motor protection device of a low-rotation-speed and high-torque synchronous motor according to the present invention.
As shown in the figure: 1. a stator; 2. a rotor; 3. a bearing cap; 4. an end cap; 5. a rotating shaft; 6. a bearing; 7. a fan; 8. a housing; 9. a junction box; 10. magnetic steel; 11. a magnetic blocking material; 12. and (5) a steel sleeve.
Detailed Description
The present invention will be described in further detail with reference to examples.
Example 1: the utility model provides a high torque synchronous motor of low rotational speed, includes stator 1, rotor 2, bearing cap 3, end cover 4, pivot 5, bearing 6, fan 7, housing 8, rotor 2 is fixed in pivot 5 to be arranged in stator 1, stator 1 one end is equipped with end cover 4, is equipped with bearing cap 3 on the end cover 4, the one end that pivot 5 is close to end cover 4 is equipped with bearing 6, bearing 6 installs on bearing cap 3, the one end that bearing 6 was kept away from to pivot 5 is equipped with fan 7, and the fan 7 upper cover has housing 8, housing 8 installs the one end that end cover 4 was kept away from at stator 1, still be equipped with terminal box 9 on the stator 1, implant a plurality of magnet steel 10 on the rotor 2, it has the magnetism blocking material 11 to fill in the space between two adjacent magnet steel 10, on the rotor 2, the outside of magnet steel 10 still is equipped with steel bushing 12.
When the motor is in specific implementation, after three-phase alternating current is fed into the three-phase stator winding of the motor, a synchronous rotating magnetic field is generated, the magnetic field interacts with the magnetic field of the rotor to drive the motor rotor to rotate, so that the loss of the motor during operation is reduced, meanwhile, the rotor does not generate pig iron loss and eddy current loss, the self loss of the motor is reduced, the high power factor enables the stator current to be smaller, the resistance loss of the stator winding is smaller, and the efficiency is improved, thereby achieving the purposes of energy conservation and consumption reduction.
The magnetic steel 10 is arranged in a stepped and parallel manner, is arranged in a unique shape, and is matched with the action of a magnetic resistance material, so that the three-phase permanent magnet synchronous motor with a self-starting function (a low-power motor or an idle starting motor) is formed, and the three-phase permanent magnet synchronous motor is simple in structure and convenient to use.
When the method is implemented, the waveform of the rotor magnetic field and the waveform of the stator magnetic field are synchronous, a pure sine wave magnetic field is formed, adverse effects of harmonic waves are eliminated, demagnetizing and reverse torque are not generated, and the temperature rise is low, so that a remarkable energy-saving effect is generated.
The magnetic steel 10 comprises a plurality of silicon steel sheets, wherein the components of the silicon steel sheets contain rare earth, and the magnetic resistance material 11 is a fireproof high-temperature-resistant flame-retardant belt in the prior art and is wound on the outer side of the silicon steel sheets.
The magnetic steel of the common motor is made of silicon steel sheets, the internal resistance circulation is large, the temperature generated during operation is high, the magnetic loss of the silicon steel sheets is large at high temperature, the highest working temperature is low, and the reliability of the motor is poor when the highest working temperature is heated to exceed a certain temperature.
The magnetic steel in the embodiment is wound with the flame-retardant material (fireproof high-temperature-resistant flame-retardant belt) on the outer side of the silicon steel sheet, and rare earth is added into the silicon steel sheet, so that internal resistance circulation of the magnetic steel is greatly reduced, the temperature of the magnetic steel generated in the operation of a motor is reduced, the operation reliability of the magnetic steel is improved, the magnetic loss is reduced, and the energy-saving effect is achieved.
A motor protection device is arranged in the junction box 9.
As shown in fig. 4, the motor protection device comprises a voltage and current sampling unit, an ac voltage stabilizing module, a rotation speed sampling unit, a temperature sampling unit, a single-chip microcomputer calculation processing unit, a time delay circuit and a switch, wherein the input end of the single-chip microcomputer calculation processing unit is connected with the voltage and current sampling unit, the ac voltage stabilizing module, the rotation speed sampling unit and the temperature sampling unit, the output end of the single-chip microcomputer calculation processing unit is connected with the input end of the time delay circuit, the output end of the time delay circuit is connected with a relay, the output end of the relay is connected with a neutral line, the input end of the voltage and current sampling unit is connected with an A phase, a B phase and a C phase of a three-phase power supply, the input end of the ac voltage stabilizing module is connected with the C phase of the three-phase power supply, and the switch is arranged on a fire wire of the three-phase power supply.
In the embodiment, the protection system which is automatically researched and developed by the company is installed in the junction box, so that overload, overtemperature and out-of-step of the ultra-efficient synchronous motor are protected, the motor is prevented from being burnt, and accidents are effectively prevented. When the voltage and the current are abnormal, namely overvoltage, open-phase, overcurrent and overload occur, and when the rotating speed is abnormal and the temperature exceeds the standard. The single chip microcomputer calculation processing unit calculates and processes signals of the single chip microcomputer calculation processing unit, and sends results to the delay circuit unit. When the fault phenomenon continuously exceeds 30 seconds, a high potential is output to enable K to be attracted. And after the K is sucked, the motor power supply is disconnected, so that the motor stops working, and the aim of protecting the motor is fulfilled.
A manufacturing method of a low-rotation-speed high-torque synchronous motor is characterized by comprising the following steps of: the method specifically comprises the following steps:
step 1: the rotor parent body of the three-phase asynchronous motor is modified: cutting off part of the iron core of the outer circumference of the rotor 2 according to the size, shape and installation position of the magnetic steel 10, implanting the magnetic steel 10 on the rotor 2, filling a magnetic resistance material 11 in a gap between the magnetic steels 10, and installing a steel sleeve 12 on the outer side of the magnetic steel 10 on the rotor 2;
step 2: manufacturing a motor protection device: the circuit components of the motor protection device are connected and installed into the junction box 9.
Step 3: and (3) assembling: the modified rotor 2, the junction box 9 and other components are mounted together.
In specific implementation, the embodiment adopts the three-phase asynchronous motor with high energy consumption in the prior art for transformation.
1. Detecting, analyzing and evaluating the waste motor (three-phase asynchronous motor);
2. testing and analyzing the insulation level of the primary winding, and completely replacing the waste winding;
3. reshaping the silicon steel sheet groove shape;
4. the rotor is machined by a numerical control lathe (part of the iron core on the outer circumference of the rotor 2 is cut off according to the size, shape and installation position of the magnetic steel 10), and the rotating shaft, the rotor silicon steel sheet and the rotor conducting bars are reused maximally;
5. the shell, the end cover and other structural members can be reused after being repaired;
6. the magnetic steel 10 is planted on the side wall of the processed rotor 2, the gaps between the magnetic steel 10 are filled with the magnetic resistance material 11, and the steel sleeve is sleeved, so that a new three-phase motor permanent magnet rotor is formed.
7. According to the circuit shown in fig. 4, a control circuit board is fabricated by connection.
8. The assembly mounts the retrofitted rotor 2, terminal box 9 and other components together.
While the invention has been described in detail in the foregoing general description and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
Claims (6)
1. The utility model provides a high moment of torsion synchronous motor of low rotational speed, includes stator (1), rotor (2), bearing cap (3), end cover (4), pivot (5), bearing (6), fan (7), housing (8), rotor (2) are fixed on pivot (5) to put in stator (1), stator (1) one end is equipped with end cover (4), is equipped with bearing cap (3) on end cover (4), the one end that pivot (5) is close to end cover (4) is equipped with bearing (6), bearing (6) are installed on bearing cap (3), the one end that bearing (6) were kept away from to pivot (5) is equipped with fan (7), and the fan (7) are gone up to be covered with housing (8), the one end that end cover (4) was kept away from in stator (1) is installed to housing (8), still be equipped with terminal box (9) on stator (1), its characterized in that: a plurality of magnetic steels (10) are implanted on the rotor (2), a gap between two adjacent magnetic steels (10) is filled with a magnetic blocking material (11), and a steel sleeve (12) is further arranged on the outer side of each magnetic steel (10) on the rotor (2).
2. The low-rotation-speed high-torque synchronous motor and the manufacturing method thereof according to claim 1, wherein: the magnetic steels (10) are arranged in a stepped and parallel mode.
3. The low-rotation-speed high-torque synchronous motor and the manufacturing method thereof according to claim 1, wherein: the magnetic steel (10) comprises a plurality of silicon steel sheets, wherein the components of the silicon steel sheets contain rare earth, and the magnetic resistance material (11) is a fireproof high-temperature-resistant flame-retardant belt and is wound on the outer side of the silicon steel sheets.
4. The low-rotation-speed high-torque synchronous motor and the manufacturing method thereof according to claim 1, wherein: and a motor protection device is arranged in the junction box (9).
5. The low-rotation-speed high-torque synchronous motor and the manufacturing method thereof according to claim 4, wherein: the motor protection device comprises a voltage and current sampling unit, an AC voltage stabilizing module, a rotating speed sampling unit, a temperature sampling unit, a singlechip calculation processing unit, a delay circuit and a switch, wherein the input end of the singlechip calculation processing unit is connected with the voltage and current sampling unit, the AC voltage stabilizing module, the rotating speed sampling unit and the temperature sampling unit, the output end of the singlechip calculation processing unit is connected with the input end of the delay circuit, the output end of the delay circuit is connected with a relay, the output end of the relay is connected with a neutral line, the input end of the voltage and current sampling unit is connected with an A phase, a B phase and a C phase of a three-phase power supply, the input end of the AC voltage stabilizing module is connected with the C phase of the three-phase power supply, and the switch is arranged on a fire wire of the three-phase power supply.
6. A manufacturing method of a low-rotation-speed high-torque synchronous motor is characterized by comprising the following steps of: the method specifically comprises the following steps:
step 1: the rotor parent body of the three-phase asynchronous motor is modified: cutting off part of the iron core of the outer circumference of the rotor (2) according to the size, shape and installation position of the magnetic steel (10), implanting the magnetic steel (10) on the rotor (2), filling a magnetic blocking material (11) in a gap between the magnetic steels (10), and installing a steel sleeve (12) on the outer side of the magnetic steel (10) on the rotor (2);
step 2: manufacturing a motor protection device: all parts of circuit components in the motor protection device are connected and installed into a junction box (9).
Step 3: and (3) assembling: and the modified rotor (2), the junction box (9) and other components are mounted together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211193125.1A CN117833584A (en) | 2022-09-28 | 2022-09-28 | Low-rotation-speed high-torque synchronous motor and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211193125.1A CN117833584A (en) | 2022-09-28 | 2022-09-28 | Low-rotation-speed high-torque synchronous motor and manufacturing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN117833584A true CN117833584A (en) | 2024-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211193125.1A Pending CN117833584A (en) | 2022-09-28 | 2022-09-28 | Low-rotation-speed high-torque synchronous motor and manufacturing method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN117833584A (en) |
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- 2022-09-28 CN CN202211193125.1A patent/CN117833584A/en active Pending
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