High-efficiency stable permanent magnet auxiliary synchronous reluctance motor

Abstract

The utility model relates to the technical field of permanent magnet auxiliary synchronous reluctance motors, and discloses a high-efficiency stable permanent magnet auxiliary synchronous reluctance motor, which comprises a base, a motor body is fixedly connected in the base, a heat dissipation opening is formed in the motor body, a stator iron core is fixedly connected in the motor body, and the stator iron core is fixedly connected in the base. A stator winding is fixedly connected to the interior of the stator core, a heat dissipation channel is formed in the interior of the stator core, a rotating shaft is rotatably connected to the interior of the motor body, a rotating block is fixedly connected to the outer wall of the rotating shaft, and an optimized rotor assembly is fixedly connected to the outer wall of the rotating block. According to the utility model, alternating current is introduced through the stator winding to drive the rotor body to rotate, and finally, the magnetic field distribution can be improved, the efficiency of the motor can be improved, the mechanical vibration and noise can be reduced, the stability and comfort of motor operation can be improved, the service life of the motor can be prolonged, and the efficiency of the motor can also be improved.

Description

Technical Field

[0001] This utility model relates to the field of permanent magnet assisted synchronous reluctance motor technology, and in particular to a high-efficiency and stable permanent magnet assisted synchronous reluctance motor. Background Technology

[0002] The high-efficiency and stable permanent magnet assisted synchronous reluctance motor is a type of motor developed based on the traditional synchronous reluctance motor. Its stator adopts a common laminated silicon steel sheet and winding structure, while the rotor is made of multiple layers of silicon steel sheets stacked to form different reluctance regions and embedding high-performance rare earth permanent magnets. The stator winding generates a rotating magnetic field through three-phase alternating current, and the rotor rotates under the action of electromagnetic torque. The torque is composed of reluctance torque and permanent magnet torque. The two work together to give the motor the advantages of high efficiency, stability and high power density. It can maintain high efficiency over a wide load and speed range, reduce torque pulsation, vibration and noise, and can be widely used in industrial drive equipment, new energy vehicles, CNC machine tools and robots.

[0003] A search revealed Chinese Patent Publication No. CN221783931U, which discloses a synchronous reluctance motor. The synchronous reluctance motor includes a stator assembly and a rotor assembly arranged coaxially. The rotor assembly includes a cylindrical rotor core, in which a plurality of first magnetic isolation slots are formed, extending axially through the rotor core and arranged parallel to each other in an extension direction perpendicular to the axial direction. A drive shaft is disposed at the center of the rotor core and extends axially through the rotor core. Each of the plurality of first magnetic isolation slots intersecting the drive shaft in the extension direction is separated by the drive shaft, and magnetic channels intersecting the drive shaft in the extension direction are interconnected around the drive shaft. A permanent magnet is disposed in the extension direction between the drive shaft and the air gap. Connecting the magnetic channels of the permanent magnet synchronous motor and placing permanent magnets in the interconnected magnetic channels can compensate for saliency, thereby improving motor efficiency.

[0004] In the aforementioned application, the stator is composed of an iron core made of stacked silicon steel sheets and windings distributed in slots in a regular manner, while the rotor includes permanent magnets and a reluctance structure composed of alternating magnetic and non-magnetic materials. However, torque pulsation still exists, which will cause mechanical vibration and noise. This will not only reduce the operating stability and comfort of the motor, but also increase the wear of mechanical parts, affect the service life of the motor, and also lead to additional energy loss and reduce motor efficiency. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a high-efficiency and stable permanent magnet assisted synchronous reluctance motor, which aims to improve the problem that the permanent magnet assisted synchronous reluctance motor in the above application leads to additional energy loss and reduced motor efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency and stable permanent magnet assisted synchronous reluctance motor, comprising a base, a motor body fixedly connected inside the base, a heat dissipation vent inside the motor body, a stator core fixedly connected inside the motor body, a stator winding fixedly connected inside the stator core, a heat dissipation channel inside the stator core, a rotating shaft rotatably connected inside the motor body, a rotating block fixedly connected to the outer wall of the rotating shaft, an optimized rotor assembly fixedly connected to the outer wall of the rotating block, and a fan fixedly connected to the outer wall of the rotating shaft.

[0007] As a further description of the above technical solution:

[0008] The base provides a stable support structure for the entire motor, and the motor body is fixedly connected inside it to ensure that the motor remains stable during operation and reduce displacement and noise caused by vibration.

[0009] Through the above technical solution: the optimized rotor assembly includes a rotor body, the rotor body is fixedly connected to the outer wall of the rotating shaft, the rotor body has an auxiliary channel inside, and a magnet is fixedly connected inside the rotor body.

[0010] As a further description of the above technical solution:

[0011] The rotor body in the optimized rotor assembly is tightly integrated with the shaft, and its internal structure is fixedly connected to the outer wall of the shaft. This connection method ensures that the rotor body can rotate synchronously and stably with the shaft, effectively reducing vibration and energy loss caused by loose connections.

[0012] Through the above technical solution, the outer wall of the rotating block is rotatably connected to the inside of the motor body.

[0013] As a further description of the above technical solution:

[0014] The rotating block's outer wall is rotatably connected to the inside of the motor body, ensuring that the rotating block rotates smoothly and flexibly within the motor body.

[0015] Through the above technical solution, the outer wall of the fan is rotatably connected to the inside of the motor body.

[0016] As a further description of the above technical solution:

[0017] The outer wall of the fan is connected to the inside of the motor body. The current drives the rotor of the motor to rotate, and the fan rotates synchronously, generating airflow to quickly dissipate heat and cool the inside of the motor.

[0018] The above technical solution involves the outer wall of the fan being disposed on the outer wall of the stator winding.

[0019] As a further description of the above technical solution:

[0020] The airflow generated by the fan rotation is used to dissipate heat from the stator windings, thereby ensuring the normal operation and stable performance of the motor.

[0021] Through the above technical solution, the outer wall of the rotor body is rotatably connected to the inside of the stator core.

[0022] As a further description of the above technical solution:

[0023] The outer wall of the rotor body is rotatably connected to the inside of the stator core to realize the conversion of electrical energy into mechanical energy.

[0024] Through the above technical solution: the motor body is provided with motor rounded corners on both sides, and the angle of the motor rounded corners is 30° to 45°.

[0025] As a further description of the above technical solution:

[0026] The rounded corners on both sides of the motor body prevent sharp edges from appearing on the motor body, making the motor easier to shape and polish during processing, thus reducing the difficulty and cost of production.

[0027] Through the above technical solution: the rotor body has rotor fillets on both sides, and the angle of the rotor fillets is 30° to 60°.

[0028] As a further description of the above technical solution:

[0029] The rounded corners of the rotor prevent sharp edges from appearing on the rotor body, making the rotor easier to handle during processing and reducing manufacturing difficulty and cost.

[0030] This utility model has the following beneficial effects:

[0031] 1. In this utility model, the rotor body is driven to rotate by passing AC current through the stator winding. Then, auxiliary channels are opened in the rotor body. Finally, the magnetic field distribution can be improved, mechanical vibration and noise can be reduced, the stability and comfort of motor operation can be improved, the service life of motor can be extended, and the efficiency of motor can also be improved.

[0032] 2. In this utility model, the design of the rotor fillet reduces the vibration amplitude and noise during motor operation, thereby improving the smoothness of motor operation. The rotor fillet design effectively reduces torque pulsation and torque fluctuation caused by changes in magnetic resistance, making the motor output torque smoother and thus improving the smoothness of motor operation. Attached Figure Description

[0033] Figure 1 This is a three-dimensional structural diagram of a high-efficiency and stable permanent magnet assisted synchronous reluctance motor proposed in this utility model.

[0034] Figure 2 This is a partial structural diagram of the stator core of a high-efficiency and stable permanent magnet assisted synchronous reluctance motor proposed in this utility model.

[0035] Figure 3 This is a partial structural diagram of the stator winding of a high-efficiency and stable permanent magnet assisted synchronous reluctance motor proposed in this utility model.

[0036] Figure 4 This is a partial structural diagram of the rotor body of a high-efficiency and stable permanent magnet assisted synchronous reluctance motor proposed in this utility model.

[0037] Legend:

[0038] 1. Base; 2. Motor body; 3. Heat dissipation vent; 4. Stator core; 5. Stator winding; 6. Heat dissipation channel; 7. Shaft; 8. Rotating block; 9. Optimized rotor assembly; 901. Rotor body; 902. Auxiliary channel; 903. Magnet; 10. Rotor fillet; 11. Fan; 12. Motor fillet. Detailed Implementation

[0039] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0040] Reference Figures 1-3 An embodiment of this utility model is provided: a high-efficiency and stable permanent magnet assisted synchronous reluctance motor, including a base 1, a motor body 2 fixedly connected inside the base 1, a heat dissipation vent 3 opened inside the motor body 2, a stator core 4 fixedly connected inside the motor body 2, a stator winding 5 fixedly connected inside the stator core 4, a heat dissipation channel 6 opened inside the stator core 4, a rotating shaft 7 rotatably connected inside the motor body 2, a rotating block 8 fixedly connected to the outer wall of the rotating shaft 7, an optimized rotor assembly 9 fixedly connected to the outer wall of the rotating block 8, and a fan 11 fixedly connected to the outer wall of the rotating shaft 7.

[0041] Specifically, the base 1 is used to fix the motor body 2, the heat dissipation vent 3 is opened inside the motor body 2 for heat dissipation, the stator core 4 is used to fix the stator winding 5, the stator core 4 has a heat dissipation channel 6 inside for heat dissipation, and the outer wall of the rotating shaft 7 can drive the fan 11 to rotate when it rotates inside the motor body 2.

[0042] Reference Figures 2-4 The optimized rotor assembly 9 includes a rotor body 901, the rotor body 901 is fixedly connected to the outer wall of the rotating shaft 7, the rotor body 901 has an auxiliary channel 902 inside, the rotor body 901 is fixedly connected to a magnet 903 inside, the outer wall of the rotating block 8 is rotatably connected to the inside of the motor body 2, the outer wall of the rotating block 8 is rotatably connected to the inside of the motor body 2, the outer wall of the fan 11 is rotatably connected to the inside of the motor body 2, and the outer wall of the fan 11 is set on the outer wall of the stator winding 5.

[0043] Specifically, when the rotor body 901 rotates, it can drive the fan 11 and the shaft 7 to rotate. The rotor body 901 also drives the magnet 903 to rotate. The rotation of the rotor body 901 inside the stator core 4 can improve the magnetic field distribution and improve the efficiency of the motor.

[0044] Reference Figures 2-4 The motor body 2 has motor fillets 12 on both sides, with an angle of 30° to 45°. The rotor body 901 has rotor fillets 10 on both sides, with an angle of 30° to 60°.

[0045] Specifically, the radius of the motor fillet 12 is 30° to 45°, which can be processed using conventional tools and molds without the need for special process equipment or complex processing procedures. This helps to improve production efficiency and reduce production costs. The radius of the rotor fillet 10 is 30° to 60°, which allows the magnetic field to be distributed more smoothly on the rotor surface, improving the electromagnetic performance of the motor and making the motor run more stably and efficiently. This improves the smoothness of motor operation, making the output torque of the motor smoother, and thus improving the smoothness of motor operation.

[0046] Working principle: When the synchronous reluctance motor is needed, AC current is applied to the stator winding 5. According to the principle of electromagnetic induction, the rotating magnetic field generated by the stator winding 5 will interact with the magnetic field of the magnet 903 inside the rotor body 901 to generate electromagnetic torque, which drives the shaft 7 to rotate. The auxiliary channel 902 opened inside the rotor body 901 reduces torque pulsation, thereby improving the magnetic field distribution. Optimizing the magnetic field distribution can reduce magnetic flux leakage and loss, making the energy conversion efficiency of the motor higher. Under the same input power, the motor can output more mechanical work and reduce energy consumption.

[0047] During motor operation, the cooling system starts working, the fan 11 rotates to promote airflow, and heat is discharged through the heat dissipation channel 6 and the heat dissipation port 3. The motor body 2 ensures the normal operating temperature of the motor. The rotor fillets 10 on both sides of the rotor body 901 reduce torque pulsation, thereby improving the smoothness of motor operation. After the smoothness of motor operation is improved, the risk of system resonance caused by vibration or pulsation is reduced, making the entire drive system more stable and reliable, especially under long-term or high-load operation conditions.

[0048] This not only reduces mechanical vibration and noise, improves the stability and comfort of motor operation, and extends the service life of the motor, but also improves the efficiency of the motor. Furthermore, the 10° radius rotor design effectively reduces torque pulsation and torque fluctuations caused by changes in magnetic resistance, making the motor output torque smoother and thus improving the stability of motor operation.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency, stable permanent magnet assisted synchronous reluctance motor, comprising a base (1), characterized in that: The base (1) is fixedly connected to the motor body (2), the motor body (2) is provided with a heat dissipation vent (3), the motor body (2) is fixedly connected to the stator core (4), the stator core (4) is fixedly connected to the stator winding (5), the stator core (4) is provided with a heat dissipation channel (6), the motor body (2) is rotatably connected to the shaft (7), the outer wall of the shaft (7) is fixedly connected to the rotating block (8), the outer wall of the rotating block (8) is fixedly connected to the optimized rotor assembly (9), and the outer wall of the shaft (7) is fixedly connected to the fan (11).

2. The high-efficiency, stable permanent magnet assisted synchronous reluctance motor according to claim 1, characterized in that: The optimized rotor assembly (9) includes a rotor body (901), the rotor body (901) is fixedly connected to the outer wall of the rotating shaft (7), the rotor body (901) has an auxiliary channel (902) inside, and a magnet (903) is fixedly connected inside the rotor body (901).

3. The high-efficiency, stable permanent magnet assisted synchronous reluctance motor according to claim 1, characterized in that: The outer wall of the rotating block (8) is rotatably connected to the inside of the motor body (2).

4. The high-efficiency, stable permanent magnet assisted synchronous reluctance motor according to claim 1, characterized in that: The outer wall of the fan (11) is rotatably connected to the inside of the motor body (2).

5. The high-efficiency, stable permanent magnet assisted synchronous reluctance motor according to claim 1, characterized in that: The outer wall of the fan (11) is disposed on the outer wall of the stator winding (5).

6. The high-efficiency, stable permanent magnet assisted synchronous reluctance motor according to claim 2, characterized in that: The outer wall of the rotor body (901) is rotatably connected to the inside of the stator core (4).

7. The high-efficiency, stable permanent magnet assisted synchronous reluctance motor according to claim 1, characterized in that: The motor body (2) has motor fillets (12) on both sides, and the angle of the motor fillets (12) is 30° to 45°.

8. A high-efficiency, stable permanent magnet assisted synchronous reluctance motor according to claim 2, characterized in that: The rotor body (901) has rotor fillets (10) on both sides, and the angle of the rotor fillets (10) is 30° to 60°.

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