CN110556990B

CN110556990B - Axial magnetic flux low vibration disk type switch reluctance motor

Info

Publication number: CN110556990B
Application number: CN201910845407.7A
Authority: CN
Inventors: 谢颖; 马泽新; 宁召阳; 胡圣明; 毛攀; 付林; 陈鹏
Original assignee: Harbin University of Science and Technology
Current assignee: Harbin University of Science and Technology
Priority date: 2019-09-05
Filing date: 2019-09-05
Publication date: 2020-10-30
Anticipated expiration: 2039-09-05
Also published as: CN110556990A

Abstract

An axial magnetic flux low-vibration disk type switched reluctance motor relates to the technical field of switched reluctance motors. The invention aims to solve the problems of large noise and unstable torque caused by vibration of the traditional switched reluctance motor. According to the axial magnetic flux low-vibration disk type switched reluctance motor, the rotor part adopts the rotor disk, the rotor block is clamped by the disk, the axial magnetic flux low-vibration disk type switched reluctance motor is convenient to mount and dismount, and a double-salient pole structure of the motor is guaranteed. A stator tooth connecting yoke is designed between two teeth of the stator, the connecting yoke enhances the strength of the stator, the influence of radial electromagnetic force on the stator teeth is inhibited, further, the axial stator vibration is inhibited, and the vibration effect of the switched reluctance motor can be effectively reduced. The axial magnetic flux low-vibration disk type switched reluctance motor is suitable for a new energy electric vehicle.

Description

Axial magnetic flux low vibration disk type switch reluctance motor

Technical Field

The invention belongs to the technical field of switched reluctance motors.

Background

With the depletion of fossil fuels such as petroleum, electric energy is widely used as clean energy. New energy electric vehicles have gradually shown advantages. The motor is used as a power source of the electric vehicle, and the research on various aspects of the motor is more and more abundant. The switched reluctance motor has its own advantages as a power source for electric vehicles. Compared with a permanent magnet synchronous motor, the switched reluctance motor has the advantages that the rotor is not provided with the permanent magnet and is of a double-salient-pole structure, the structure is simple and stable, the switched reluctance motor is suitable for high rotating speed, and the demagnetization problem does not exist. Compared with an induction motor, the switched reluctance motor has higher efficiency and better controllability, and can realize the speed regulation within a money range. However, the switched reluctance motor has certain defects, such as large vibration noise and unstable torque.

Disclosure of Invention

The invention provides an axial magnetic flux low-vibration disk type switched reluctance motor, aiming at solving the problems of larger noise and unstable torque caused by vibration of the traditional switched reluctance motor.

An axial flux low vibration disk switched reluctance motor comprising: two stators 1, rotor 2 and motor shaft 5, stator 1 includes: the stator disc 1-0 and 12 stator teeth 1-1, 12 stator teeth 1-1 are uniformly distributed in a circular ring shape and fixed on one side of the stator disc 1-0, two adjacent stator teeth 1-1 are fixedly connected through a stator tooth connecting yoke 1-2, each stator tooth 1-1 is wound with a winding 3,

the rotor 2 includes: a circular rotor disc 2-0 and 8 rotor blocks 2-1, wherein the rotor disc 2-0 is provided with 8 through holes which are uniformly distributed in a circular shape, each rotor block 2-1 is embedded in each through hole,

the two stators 1 and the rotor 2 are coaxially sleeved on the motor rotating shaft 5, the rotor 2 is positioned between the two stators 1, an air gap is reserved between the rotor 2 and the stators 1, one surfaces of the two stators 1, which are fixed with the stator teeth 1-1, are opposite to each other, the rotor 2 and the motor rotating shaft 5 are fixed to each other, and a closed magnetic flux loop can be formed between the stator teeth 1-1 and the rotor block 2-1.

The switched reluctance motor further comprises two casings 4, each casing 4 is of a cylindrical structure with one open end, a circular hole is formed in the center of the closed end face of each casing 4, the open ends of the two casings 4 are opposite to each other and penetrate through the two ends of the motor rotating shaft 5 through the respective circular holes respectively, the open ends of the two casings 4 are connected with each other to form a cavity between the two casings, the two stators 1 and the rotor 2 are located inside the cavity, and the outer end faces of the two stators 1 are fixed to the bottoms of the two casings 4 respectively.

The switched reluctance motor further comprises two bearings 6, wherein an annular groove is formed in the outer circumference of a circular hole in the shell 4, and the two bearings 6 are respectively embedded in the annular grooves of the two shells 4, so that the shell 4 is rotatably connected with the motor rotating shaft 5 through the bearings 6.

The two housings 4 are connected by bolts.

The axial magnetic flux low-vibration disk type switched reluctance motor is of a double-stator structure. The double-stator structure is stable, the stress on two sides is uniform, and the vibration can be effectively inhibited. The basic control of the motor can be completed by adopting the traditional switched reluctance motor controller and the power converter, and the control part of the motor does not need to be additionally designed, thereby saving the cost. The rotor part adopts a rotor disc, the rotor block is clamped by the disc, the installation and the disassembly are convenient, and the double salient pole structure of the motor is ensured. A stator tooth connecting yoke is designed between two teeth of the stator, the connecting yoke enhances the strength of the stator, the influence of radial electromagnetic force on the stator teeth is inhibited, further, the axial stator vibration is inhibited, and the vibration effect of the switched reluctance motor can be effectively reduced. The stator tooth connecting yoke also plays a role in protecting the winding. The axial magnetic flux low-vibration disk type switched reluctance motor is suitable for a new energy electric vehicle.

Drawings

Fig. 1 is a schematic view of an external structure of a disk type switched reluctance motor;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is an exploded view of the disc-type switched reluctance motor according to one embodiment;

FIG. 4 is a three-dimensional schematic view of a stator having windings;

FIG. 5 is a front view of a stator with windings;

FIG. 6 is a three-dimensional schematic of a winding;

FIG. 7 is a three-dimensional schematic view of a rotor;

FIG. 8 is a front view of the rotor;

FIG. 9 is a three-dimensional schematic view of the enclosure;

FIG. 10 is a front view of the housing;

FIG. 11 is a three-dimensional schematic view of a bearing;

fig. 12 is a front view of the bearing.

Detailed Description

The first embodiment is as follows: specifically, the present embodiment will be described with reference to fig. 1 to 8, and an axial-flux low-vibration disk-type switched reluctance motor according to the present embodiment includes: two stators 1, a rotor 2 and a motor rotating shaft 5,

the stator 1 is a salient pole structure, and includes: the stator disc 1-0 and the 12 stator teeth 1-1, the 12 stator teeth 1-1 are uniformly distributed in a circular ring shape and fixed on one side of the stator disc 1-0, and the stator teeth 1-1 are important parts for forming a main magnetic flux magnetic circuit of the motor; each stator tooth 1-1 is wound with a winding 3 for providing excitation, and the windings 3 supply power in sequence and can be divided into three phases according to the winding mode of the windings 3.

Two adjacent stator teeth 1-1 are fixedly connected through a stator tooth connecting yoke 1-2, and the stator tooth connecting yoke 1-2 plays a role in reinforcing the stator teeth 1-1 and improving the natural frequency of the motor, so that the aim of reducing the vibration of the motor is fulfilled.

The rotor 2 includes: the rotor comprises a circular rotor disc 2-0 and 8 rotor blocks 2-1, wherein the rotor disc 2-0 is provided with 8 through holes which are uniformly distributed in a circular shape, and one rotor block 2-1 is embedded in each through hole.

The two stators 1 and the rotor 2 are coaxially sleeved on the motor rotating shaft 5, the rotor 2 is positioned between the two stators 1, an air gap is reserved between the rotor 2 and the stators 1, the sizes of the air gaps on the two sides of the rotor 2 are completely the same, one surfaces of the two stators 1, which are fixed with the stator teeth 1-1, are opposite to each other, the rotor 2 and the motor rotating shaft 5 are fixed with each other, and a closed magnetic flux loop can be formed between the stator teeth 1-1 and the rotor block 2-1.

The second embodiment is as follows: the present embodiment is specifically described with reference to fig. 9 to 12, and is further described with reference to the axial magnetic flux low vibration disk type switched reluctance motor in the present embodiment, the present embodiment further includes two housings 4 and two bearings 6, the housing 4 plays a role of fixing the stator 1 and supporting the rotor 2, specifically:

the casing 4 is a cylindrical structure with an opening at one end, a circular hole is arranged at the center of the closed end surface of the casing 4, a circular groove is arranged at the outer circumference of the circular hole in the casing 4,

the open ends of two casings 4 are just right each other, and pass motor shaft 5's both ends through respective circular port respectively, the open end interconnect of two casings 4 makes vacuole formation between the two, two stators 1 and rotor 2 all are located inside this cavity, and the outer terminal surface of two stators 1 fixes respectively in the bottom of two casings 4, pass through bolted connection between two casings 4, two bearings 6 are inlayed respectively in the annular groove of two casings 4, make and rotate through bearing 6 between casing 4 and the motor shaft 5 and be connected.

Claims

1. An axial flux low vibration disk switched reluctance motor comprising: two stators (1), a rotor (2) and a motor rotating shaft (5),

the stator (1) comprises: the stator comprises a stator disc (1-0) and 12 stator teeth (1-1), wherein the 12 stator teeth (1-1) are uniformly distributed in a circular ring shape and fixed on one side of the stator disc (1-0), two adjacent stator teeth (1-1) are fixedly connected through a stator tooth connecting yoke (1-2), a winding (3) is wound on each stator tooth (1-1), the winding (3) is wound on the root part of each stator tooth (1-1), the stator tooth connecting yoke (1-2) is positioned above the winding (3), and the stator tooth connecting yoke (1-2) is of two strip structures,

the rotor (2) comprises: a circular rotor disc (2-0) and 8 rotor blocks (2-1), wherein the rotor disc (2-0) is provided with 8 through holes which are uniformly distributed in a circular shape, each through hole is internally embedded with one rotor block (2-1),

two stators (1) and rotor (2) all cup joint on motor shaft (5) coaxially, rotor (2) are located between two stators (1), and leave the air gap between rotor (2) and stator (1), two stators (1) are fixed with the one side of stator tooth (1-1) and are just right each other, and mutual fixed between rotor (2) and motor shaft (5), can form closed magnetic flux return circuit between stator tooth (1-1) and rotor piece (2-1).

2. The axial magnetic flux low vibration disk type switched reluctance motor according to claim 1 further comprises two casings (4), wherein the casings (4) are cylindrical structures with one open end, a circular hole is formed in the center of the closed end surface of the casing (4), the open ends of the two casings (4) are opposite to each other and respectively penetrate through two ends of the motor rotating shaft (5) through the respective circular holes, the open ends of the two casings (4) are connected with each other to form a cavity therebetween, the two stators (1) and the rotor (2) are both located in the cavity, and the outer end surfaces of the two stators (1) are respectively fixed at the bottoms of the two casings (4).

3. An axial flux low vibration disc switched reluctance motor according to claim 2 further comprising two bearings (6),

the outer circumference of the circular hole in the inner part of the machine shell (4) is provided with an annular groove, and the two bearings (6) are respectively embedded in the annular grooves of the two machine shells (4), so that the machine shell (4) is rotatably connected with the motor rotating shaft (5) through the bearings (6).

4. An axial flux low vibration disc switched reluctance motor as claimed in claim 2, wherein the two housings (4) are bolted to each other.