Rotary motor

Abstract

The invention discloses a rotating motor, and belongs to the technical field of motor production. Comprising a rotor, a stator, a stator winding, a rotor shaft and a fixing device, the rotor is in a barrel shape with a hole in the center, the hole in the center of the rotor is a rotor center hole, the stator is cylindrical, a stator center hole is formed in the center of the stator, an outer center hole is formed in the center of the fixing device, the stator is embedded into an inner cavity of the rotor, and the fixing device is arranged on the other side of the stator. The rotor shaft penetrates through the rotor center hole, the stator center hole and the outer center hole, the stator winding is wound on the stator, and the stator and the fixing device are fixed through a fixing rod in a threaded connection mode. The rotor of the motor is integrally formed and cast by the steel material with strong magnetic conductivity, the integral forming process is relatively simple, the motor has the advantages of low cost and high finished product quality, the magnetic conductivity is good, no permanent magnet is needed, and the production cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of motor production, and in particular to a rotating motor. Background Art

[0002] The motor is a highly efficient device. In modern society, the use of motors can be said to be everywhere. It is widely used in daily life and production practice. Chinese invention patent CN215772692U discloses a stator core silicon steel sheet fixing structure, which includes a stacked silicon steel sheet structure and clips. The stacked silicon steel sheet structure is composed of multiple silicon steel sheets stacked layer by layer. However, the rotor and stator are generally made of ordinary silicon steel sheets stacked together, which has low overall structural strength, high manufacturing costs, and complex production processes. Furthermore, the use of two sets of permanent magnets within the motor further increases material costs, resulting in high manufacturing costs for the motor. Summary of the Invention

[0003] The purpose of the present invention is to provide a rotating electrical machine that solves the shortcomings of relatively complex manufacturing process, high cost, low overall structural strength, the need for permanent magnets, and high production cost.

[0004] In order to achieve the above object, the present invention provides the following technical solutions: A rotating electric machine comprises a rotor (1), a stator (2), a stator winding (3), a rotor shaft (4), and a fixing device (5); the rotor (1) is barrel-shaped with a central opening; the central opening of the rotor (1) is a rotor central hole (11); and the rotor central hole (11) extends inwardly to form a tubular side wall; The stator (2) is cylindrical, a stator center hole (6) is provided at the center of the stator (2), a winding hole (7) is provided on the outermost circle of the stator (2), and a plurality of stator fixing holes (8) are provided between the winding hole (7) and the stator center hole (6); An outer center hole (9) is provided at the center of the fixing device (5), and a plurality of outer fixing holes (10) are provided outside the outer center hole (9); The stator (2) is embedded in the internal cavity of the rotor (1), the fixing device (5) is provided on the other side of the stator (2), the rotor shaft (4) passes through the rotor center hole (11), the stator center hole (6) and the outer center hole (9), and the stator winding (3) is wound on the stator (2); Fixing rods (12) are provided in the outer fixing hole (10) and the stator fixing hole (8); the stator (2) and the fixing device (5) are screwed and fixed via the fixing rods (12).

[0005] Furthermore, the rotor (1) is a magnetic steel having an integrally formed structure.

[0006] Furthermore, one end of the rotor shaft (4) extends out of the rotor (1).

[0007] Furthermore, the fixing device (5) is a base.

[0008] Furthermore, the stator winding (4) is a four-phase winding.

[0009] Furthermore, a motor driver is used in combination with the present application, and the hardware topology of the motor driver is a four-phase full-bridge mode; the algorithms used by the motor driver include synthetic algorithms such as four-phase orthogonal PWM pulse width modulation and S-curve generation.

[0010] The beneficial effects of the present invention include: the rotor of the inventive motor is integrally cast from a highly magnetically permeable steel material. This relatively simple integral molding process offers the advantages of low cost and high-quality finished products. The excellent magnetic permeability eliminates the need for permanent magnets, reducing production costs. Furthermore, a synthetic algorithm, such as S-curve generation, is employed to maximize the smoothness of the motor's output while minimizing noise and impact.

[0011] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 FIG. 1 is a schematic diagram of the internal structure of a motor according to an embodiment of the present invention.

[0013] Figure 2 FIG. 1 is a schematic structural diagram of a stator according to an embodiment of the present invention.

[0014] Figure 3 FIG. 1 is a schematic structural diagram of a rotor according to an embodiment of the present invention.

[0015] Figure 4 FIG. 1 is a schematic diagram of a square connection winding pattern of a stator according to an embodiment of the present invention.

[0016] Figure 5 This is a schematic diagram of the star-connected winding mode structure of a stator shown in one embodiment of the present invention.

[0017] Figure 6 FIG. 1 is a circuit diagram of a hardware topology according to an embodiment of the present invention.

[0018] 1. Rotor; 2. Stator; 3. Stator winding; 4. Rotor shaft; 5. Fixing device; 6. Stator center hole; 7. Winding hole; 8. Stator fixing hole; 9. Outer center hole; 10. Outer fixing hole; 11. Rotor center hole; 12. Fixing rod. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0020] Reference Figure 1 This embodiment provides a rotating electric machine whose rotor is integrally molded and cast from a steel material with strong magnetic conductivity. The integral molding process is relatively simple, and has the advantages of low cost and high product quality. Good magnetic conductivity does not require permanent magnets, reducing production costs. The rotating electric machine includes a rotor 1, a stator 2, a stator winding 3, a rotor shaft 4, and a fixing device 5. The rotor 1 is barrel-shaped with a central opening. The central opening of the rotor 1 is a rotor center hole 11, and a tubular sidewall extends inward from the rotor center hole 11. The stator 2 is cylindrical, with a stator center hole 6 at the center of the stator 2, a winding hole 7 at the outermost circle of the stator 2, and a plurality of stator fixing holes 8 between the winding hole 7 and the stator center hole 6; An outer center hole 9 is provided at the center of the fixing device 5, and a plurality of outer fixing holes 10 are provided outside the outer center hole 9; The stator 2 is embedded in the internal cavity of the rotor 1. A fixing device 5 is provided on the other side of the stator 2. The rotor shaft 4 passes through the rotor center hole 11, the stator center hole 6 and the outer center hole 9. The stator winding 3 is wound on the stator 2. Fixing rods 12 are provided in the outer fixing hole 10 and the stator fixing hole 8 ; the stator 2 and the fixing device 5 are screwed and fixed via the fixing rods 12 .

[0021] The rotor 1 is an integrally formed structure of magnetically conductive steel, and one end of the rotor shaft 4 extends out of the rotor 1 .

[0022] The fixing device 5 can be any one of a base and a bearing. In this embodiment, the fixing device 5 is a base.

[0023] The stator winding 3 can be any one of a four-phase winding and a star winding. In this embodiment, the stator winding 3 is a four-phase winding.

[0024] The core feature of the rotor is the one-piece high magnetic permeability steel material, which can be any one of carbon steel, pure iron, and iron alloy.

[0025] Specifically, a motor driver is used in combination with the present application. The motor driver driving the present application has the following advantages: 1. The hardware topology of the motor driver is a four-phase full-bridge mode. If a three-phase drive is used, the torque pulsation will be too large; 2. The four-phase orthogonal PWM pulse width modulation is an algorithm improved and optimized based on the VF algorithm. For the strategy of rotating motor control, the first is to give the speed based on the frequency, and the second is to give the torque based on the duty cycle. In order to enhance the performance of the rotating motor, synthetic algorithms such as S-curve generation are also used. This algorithm can maximize the softness of the motor's output and reduce noise and impact. It is a typical application of motion control theory in the motor control industry.

[0026] In summary, the present invention provides a rotating electric machine whose rotor is integrally cast from a highly magnetically permeable steel material. This one-piece molding process is relatively simple, yet offers the advantages of low cost and high-quality finished products. The excellent magnetic permeability eliminates the need for permanent magnets, reducing production costs. Furthermore, a synthetic algorithm, such as S-curve generation, is employed to maximize the smoothness of the motor's output while minimizing noise and impact.

[0027] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A rotating electrical machine, characterized in that: The invention comprises a rotor (1), a stator (2), a stator winding (3), a rotor shaft (4), and a fixing device (5); the rotor (1) is barrel-shaped with a central opening; the central opening of the rotor (1) is a rotor central hole (11); and a tubular side wall extends inwardly from the rotor central hole (11); The stator (2) is cylindrical, a stator center hole (6) is provided at the center of the stator (2), a winding hole (7) is provided at the outermost circle of the stator (2), and a plurality of stator fixing holes (8) are provided between the winding hole (7) and the stator center hole (6); An outer center hole (9) is provided at the center of the fixing device (5), and a plurality of outer fixing holes (10) are provided outside the outer center hole (9); The stator (2) is embedded in the internal cavity of the rotor (1); the fixing device (5) is provided on the other side of the stator (2); the rotor shaft (4) passes through the rotor center hole (11), the stator center hole (6) and the outer center hole (9); and the stator winding (3) is wound on the stator (2); Fixing rods (12) are provided in the external fixing hole (10) and the stator fixing hole (8); the stator (2) and the fixing device (5) are screwed and fixed via the fixing rods (12).

2. The rotating electrical machine according to claim 1, characterized in that The rotor (1) is a magnetically conductive steel with an integrally formed structure.

3. The rotating electrical machine according to claim 1, characterized in that One end of the rotor shaft (4) extends out of the rotor (1).

4. The rotating electrical machine according to claim 1, wherein: The fixing device (5) is a base.

5. The rotating electrical machine according to claim 1, characterized in that The stator winding (3) is a four-phase winding.

6. The rotating electrical machine according to claim 1, characterized in that Also used in combination with the present application is a motor driver, the hardware topology of which is a four-phase full-bridge mode; the algorithms used by the motor driver include synthesis algorithms such as four-phase orthogonal PWM pulse width modulation and S-curve generation.

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