CN216774577U - Double-stator multi-winding permanent magnet synchronous motor - Google Patents
Double-stator multi-winding permanent magnet synchronous motor Download PDFInfo
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- CN216774577U CN216774577U CN202122928167.2U CN202122928167U CN216774577U CN 216774577 U CN216774577 U CN 216774577U CN 202122928167 U CN202122928167 U CN 202122928167U CN 216774577 U CN216774577 U CN 216774577U
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Abstract
The utility model discloses a double-stator multi-winding permanent magnet synchronous motor which comprises a shell, a transmission gear train, an input shaft, an output shaft, a first stator, a second stator, a first rotor and a second rotor, wherein the first stator and the second stator are coaxially arranged in the shell, the first rotor, the second rotor and the input shaft are sequentially coaxially connected, the first rotor is rotatably arranged in the first stator, the second rotor is movably arranged in the second stator, the input shaft is connected with the transmission gear train, and the output end of the transmission gear train is connected with the output shaft. The utility model meets the full working condition that the loader needs large torque at low speed, high power and high efficiency at overspeed, and the working principle is that the windings between the double stators and the multiple windings are adopted to achieve high efficiency and high power by the mutual phase change of the controllers.
Description
Technical Field
The utility model relates to the field, in particular to a double-stator multi-winding permanent magnet synchronous motor.
Background
Because the existing permanent magnet synchronous motor has the condition that the speed regulation range is small, the flux weakening control is needed when the speed exceeds the rated rotating speed, the efficiency of the motor is reduced when the speed exceeds the rated rotating speed, the working time of the loader is shortened, the electric quantity of a battery is increased in the same time, and the cost of the existing battery cannot be reduced.
A double-stator multi-winding permanent magnet synchronous motor is needed to solve the above problems.
Disclosure of Invention
The utility model provides a double-stator multi-winding permanent magnet synchronous motor, which aims to solve the problems that the speed regulation range of a permanent magnet synchronous motor in the prior art is small, the efficiency of the motor is reduced when the speed exceeds a rated rotating speed and needs to be subjected to weak magnetic control, the working time of a loader is shortened, the electric quantity of a battery needs to be increased in the same time, and the cost of the existing battery cannot be reduced.
The utility model provides a double-stator multi-winding permanent magnet synchronous motor which comprises a shell, a transmission gear train, an input shaft, an output shaft, a first stator, a second stator, a first rotor and a second rotor, wherein the first stator and the second stator are coaxially arranged in the shell, the first rotor, the second rotor and the input shaft are sequentially coaxially connected, the first rotor is rotatably arranged in the first stator, the second rotor is movably arranged in the second stator, the input shaft is connected with the transmission gear train, and the output end of the transmission gear train is connected with the output shaft.
According to the double-stator multi-winding permanent magnet synchronous motor, as a preferable mode, the first rotor and the second rotor are permanent magnets.
Because the rotor is made of permanent magnets, the magnetic flux density is high, exciting current is not needed, and excitation loss is eliminated. Compared with asynchronous motor, it reduces exciting current of stator winding and copper and iron loss of rotor, and greatly reduces reactive current, because stator and rotor are synchronous in magnetic potential, and rotor core has no iron loss of fundamental wave, so that its efficiency (related to active electric energy) and power factor (related to reactive electric energy) are higher than those of asynchronous motor. Permanent magnet synchronous motors are typically designed for high power factor and efficiency even when operating at light loads. From the load change of the motor, the rare earth permanent magnet synchronous motor can keep the high power factor and high efficiency in the range of 1-200% of rated power to operate, and the highest efficiency can reach 97% of work
According to the double-stator multi-winding permanent magnet synchronous motor, as a preferred mode, the inner ring of the first stator is axially provided with a plurality of windings, and the second stator is provided with the windings at the position corresponding to the first stator.
According to the double-stator multi-winding permanent magnet synchronous motor, as a preferred mode, the transmission gear train comprises the input gear and the output gear, the input gear and the output gear are meshed with each other, the input gear is connected with the input shaft, and the output gear is connected with the output shaft.
According to the double-stator multi-winding permanent magnet synchronous motor, as a preferred mode, the diameter of the reference circle of the input gear is smaller than that of the reference circle of the output gear.
According to the double-stator multi-winding permanent magnet synchronous motor, as a preferred mode, the first stator is provided with three groups of windings, and the three groups of windings are uniformly distributed on the inner wall of the first stator.
According to the double-stator multi-winding permanent magnet synchronous motor, as a preferred mode, the second stator is provided with three groups of windings, and the three groups of windings are uniformly distributed on the inner wall of the second stator.
The utility model has the following beneficial effects:
(1) the permanent magnet synchronous motor adopts a multi-winding design, so that the power efficiency and the power factor are improved;
(2) the heating of the permanent magnet synchronous motor is small, so that the motor cooling system has a simple structure, a small volume and low noise;
(3) the system adopts a totally-enclosed structure, is free of lubricating oil and maintenance
Drawings
FIG. 1 is a schematic diagram of a dual stator multi-winding permanent magnet synchronous machine;
fig. 2 is a schematic diagram of a transmission gear train of a double-stator multi-winding permanent magnet synchronous motor.
Reference numerals:
1. a housing; 2. a transmission gear train; 21. an input gear; 22. an output gear; 3. an input shaft; 4. an output shaft; 5. a first stator; 6. a second stator; 7. a first rotor; 8. a second rotor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1
As shown in fig. 1, a double-stator multi-winding permanent magnet synchronous motor comprises a housing 1, a transmission gear train 2, an input shaft 3, an output shaft 4, a first stator 5, a second stator 6, a first rotor 7 and a second rotor 8, wherein the first stator 5 and the second stator 6 are coaxially arranged inside the housing 1, the first rotor 7, the second rotor 8 and the input shaft 3 are sequentially coaxially connected, the first rotor 7 is rotatably arranged inside the first stator 5, the second rotor 8 is movably arranged inside the second stator 6, the input shaft 3 is connected with the transmission gear train 2, and the output end of the transmission gear train 2 is connected with the output shaft 4.
The first rotor 7 and the second rotor 8 are permanent magnets.
A plurality of windings are axially arranged on the inner ring of the first stator 5, and the windings are arranged at the positions of the second stator 6 corresponding to the first stator 5. The first stator 5 is provided with three groups of windings which are uniformly distributed on the inner wall of the first stator 5. The second stator 6 is provided with three groups of windings which are uniformly distributed on the inner wall of the second stator 6.
As shown in fig. 2, the transmission gear train 2 includes an input gear 21 and an output gear 22, the input gear 21 and the output gear 22 are engaged with each other, the input gear 21 is connected to the input shaft 3, and the output gear 22 is connected to the output shaft 4.
The input gear 21 pitch diameter is smaller than the output gear 22 pitch diameter.
The permanent magnet synchronous motor has the advantages that the rotating speed and the frequency of the permanent magnet synchronous motor maintain a strict and unchangeable fixed relation, the rotating speed and the frequency of the permanent magnet synchronous motor are different from a larger slip ratio when the asynchronous motor runs under load, the permanent magnet synchronous motor has a harder mechanical characteristic, and the permanent magnet synchronous motor has stronger bearing capacity for motor torque disturbance caused by load change. The rotor core of the permanent magnet synchronous motor can be made into a hollow structure to reduce the inertia of the rotor, the starting time and the braking time of the permanent magnet synchronous motor are much faster than those of an asynchronous motor, and the permanent magnet synchronous motor is more suitable for running under the condition of fast response than the asynchronous motor due to the high torque/inertia ratio.
The size of the permanent magnet synchronous motor is greatly reduced compared with that of an asynchronous motor, and the weight is also greatly reduced. The power density of the permanent magnet synchronous motor with the same heat dissipation condition and the insulating material is more than 3 times greater than that of a three-phase asynchronous motor.
The permanent magnet synchronous vector control is adopted, the direct current of the battery is inverted into a plurality of groups of three-phase alternating currents through the controller and is output to the motor, the frequency, the voltage and the torque of the motor are controlled to drive the rotating speed of the motor and control the power and the torque of the motor
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (7)
1. The utility model provides a many windings of two stators PMSM which characterized in that: including casing (1), transmission gear train (2), input shaft (3), output shaft (4), first stator (5), second stator (6), first rotor (7) and second rotor (8), first stator (5) with second stator (6) coaxial set up in inside casing (1), first rotor (7), second rotor (8) and input shaft (3) coaxial line is connected in proper order, first rotor (7) rotatable set up in inside first stator (5), second rotor (8) mobile set up in inside second stator (6), input shaft (3) are connected transmission gear train (2), transmission gear train (2) output is connected output shaft (4).
2. A double stator multiple winding permanent magnet synchronous machine according to claim 1, characterized in that: the first rotor (7) and the second rotor (8) are permanent magnets.
3. A double stator multiple winding permanent magnet synchronous machine according to claim 1, characterized in that: the inner ring of the first stator (5) is axially provided with a plurality of windings, and the second stator (6) and the first stator (5) are provided with windings at corresponding positions.
4. A double stator multiple winding permanent magnet synchronous machine according to claim 1, characterized in that: the transmission gear train (2) comprises an input gear (21) and an output gear (22), the input gear (21) and the output gear (22) are meshed with each other, the input gear (21) is connected with the input shaft (3), and the output gear (22) is connected with the output shaft (4).
5. A double stator multiple winding permanent magnet synchronous machine according to claim 4, characterized in that: the input gear (21) pitch circle diameter is smaller than the output gear (22) pitch circle diameter.
6. A double stator multiple winding permanent magnet synchronous machine according to claim 3, characterized in that: the first stator (5) is provided with three groups of windings, and the three groups of windings are uniformly distributed on the inner wall of the first stator (5).
7. A double stator multiple winding permanent magnet synchronous machine according to claim 3, characterized in that: the second stator (6) is provided with three groups of windings, and the three groups of windings are uniformly distributed on the inner wall of the second stator (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122928167.2U CN216774577U (en) | 2021-11-26 | 2021-11-26 | Double-stator multi-winding permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122928167.2U CN216774577U (en) | 2021-11-26 | 2021-11-26 | Double-stator multi-winding permanent magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216774577U true CN216774577U (en) | 2022-06-17 |
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ID=81962915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122928167.2U Active CN216774577U (en) | 2021-11-26 | 2021-11-26 | Double-stator multi-winding permanent magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216774577U (en) |
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2021
- 2021-11-26 CN CN202122928167.2U patent/CN216774577U/en active Active
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