CN212695877U

CN212695877U - Novel efficient composite permanent magnet motor Halbch iron core structure

Info

Publication number: CN212695877U
Application number: CN202020965309.5U
Authority: CN
Inventors: 陈虎威; 钱伟; 赵勇; 程寿国
Original assignee: Jiangsu Aerospace Power Electric Co Ltd
Current assignee: Jiangsu Aerospace Power Electric Co Ltd
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2021-03-12
Anticipated expiration: 2030-05-29

Abstract

The utility model discloses a novel high-efficient compound permanent-magnet machine Halbch iron core structure, rotor core and stator core including coaxial setting, stator core is formed by a plurality of stators towards the piece coincide, sets up the winding hole on the stator towards the interior anchor ring, places stator winding in the winding hole, and the winding hole is established to radial distribution's rectangular shape to the width is outwards crescent by the interior anchor ring, inlays the magnet steel on the rotor core outer anchor ring, and the magnet steel mode of magnetizing adopts the Halbch array, and every utmost point comprises 2 magnet steels of Halbch array, and twine through heat-resisting high strength non-metallic carbon fiber. The Halbch iron core structure of the efficient composite permanent magnet motor can reduce the harmonic content of the motor, improve the output performance index of the motor and effectively reduce the loss of the motor.

Description

Novel efficient composite permanent magnet motor Halbch iron core structure

Technical Field

The utility model belongs to the technical field of the permanent-magnet machine technique and specifically relates to a novel high-efficient compound permanent-magnet machine Halbch iron core structure.

Background

Among various driving motors, the permanent magnet synchronous motor has the advantages of high energy density, high efficiency, small volume, low inertia, quick response and good application prospect. The permanent magnet motor has the advantages of a brushless structure of an alternating current motor, reliability in operation and the like, has the advantage of good speed regulation performance of a direct current motor, does not need an excitation winding, can achieve small volume and high control efficiency, and is a hotspot for research and development and application of the current motor.

At present, the theory of the permanent magnet synchronous motor is not as perfect as that of a direct current motor and an induction motor, and a plurality of problems need to be further researched, such as motor loss reduction, output performance improvement, magnetic flux leakage reduction, air gap field enhancement and the like, and the solution of the problems has important significance for improving the running performance of the permanent magnet motor.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: a novel Halbach iron core structure of a composite permanent magnet synchronous motor is designed, so that the 380V-68p-18kW Halbach iron core structure has good operation performance, can reduce noise and vibration of the motor, and simultaneously improves the working performance of the motor.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a novel high-efficient compound permanent-magnet machine Halbch iron core structure, rotor core and stator core including coaxial setting, stator core form by a plurality of stator lamination coincide, stator lamination in set up the winding hole on the inner ring surface, place stator winding in the winding hole, the winding hole establish to radial distribution's rectangular shape to the width is outwards crescent by the inner ring surface, rotor core outer anchor ring on inlay the magnet steel, the magnet steel magnetizes the mode and adopts the Halbch array, every utmost point of Halbch array comprises 2 magnet steels to through the winding of heat-resisting high strength non-metallic carbon fiber.

Furthermore, the stator winding adopts a single-layer copper wire type.

Furthermore, the two sides of the winding hole are provided with concave parts which are arranged at the positions close to the inner ring surface, so that the stator winding is better fixed, and the stator winding is prevented from falling off from the winding hole.

Furthermore, 84 winding holes are uniformly distributed on the circumference.

Furthermore, the included angle of the edge lines at two sides of the winding hole is 4 degrees.

Further, the magnetic steel is adhered to the rotor core through heat-resistant glue.

Furthermore, the number of the magnetic steels is 136 which are uniformly distributed on the circumference.

The utility model discloses a novel high-efficient compound permanent magnetism unit Halbch iron core structure, its beneficial effect is: the rotor part adopts a Halbach magnetizing mode, so that the harmonic content of the motor is reduced, and the output performance index of the motor is improved; the control mode of a frequency converter used with the current composite permanent magnet motor is simplified, the motor loss can be effectively reduced, and the output performance can be improved; the starting time of the motor is shortened, and the locked-rotor characteristic of the motor is enhanced; compared with a permanent magnet motor driving system, the maintenance cost of the driving system is reduced.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic diagram of a winding aperture configuration;

in the figure: 1. stator core, 2 stator winding, 3 rotor core, 4 magnetic steel, 5 winding holes and 6 inner concave part.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

Rotor core 3 and stator core 1 including coaxial setting as shown in fig. 1, stator core 1 is formed by a plurality of stator punching coincide, set up winding hole 5 on the stator punching inner annular face, place stator winding 2 in the winding hole 5, winding hole 5 establishes to radial distribution's rectangular shape, and the width is outwards crescent by the inner annular face, both sides edge line contained angle is 4 (as shown in fig. 2), inlay magnet steel 4 on the 3 outer annular faces of rotor core, magnet steel 4 magnetizes the mode and adopts the Halbch array, Halbch array is every extremely by 2 magnet steels, and twine through heat-resisting high strength non-metallic carbon fiber.

The stator winding 2 adopts a single-layer copper wire type.

The number of the winding holes 5 is 84, the circumference of each winding hole is evenly distributed, concave parts 6 are arranged on two sides of each winding hole 5, and the concave parts 6 are arranged at positions close to the inner ring surface.

Magnet steel 4 pastes on rotor core 3 through heat-resisting glue, and magnet steel 4 sets up 136 of circumference equipartition.

The rotor punching sheet is made of a silicon steel material with the mark number of 50W470, and a special silicon steel sheet material is replaced, so that the purpose of saving cost is achieved under the condition that the performance reaches the standard. The magnetic steel is made of high-performance rare earth permanent magnet materials (high residual magnetic density, coercive force and high magnetic energy product), and the motor can be allowed to have large air gap length and power density, so that the magnetic steel has great flexibility and variability in the permanent magnet embedding and magnetic circuit structure design.

Will the utility model discloses a novel high-efficient compound permanent-magnet machine Halbch iron core structure applies to 380V-68p-18kW motor, and the motor possesses good operating performance to can reduce motor noise and vibration, improve the working property of motor simultaneously. In the design process, the design performance targets (the volume size, the current, the voltage and the like of the motor) are combined, and the iron core length, the rotor outer diameter and the magnetic steel of the motor are optimized and calculated by adopting a biological algorithm, so that the structure of the rotor iron core is determined. In the process of mounting the magnetic steel, a special mounting die is adopted to inlay the magnetic steel; after the installation is finished, the assembling hoisting die and the clamp are uniformly utilized to assemble the rotor.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a novel high-efficient compound permanent-magnet machine Halbch iron core structure, characterized by: rotor core (3) and stator core (1) including coaxial setting, stator core (1) form by a plurality of stator punching coincide, stator punching on set up winding hole (5), place stator winding (2) in winding hole (5), winding hole (5) establish to radial distribution's rectangular shape to the width is outwards crescent by interior anchor ring, rotor core (3) outer anchor ring on inlay magnet steel (4), magnet steel (4) magnetize the mode and adopt the Halbch array, every utmost point by 2 magnet steels of Halbch array to twine through heat-resisting high strength non-metallic carbon fiber.

2. The novel efficient composite permanent magnet motor Halbch iron core structure of claim 1, which is characterized in that: the stator winding (2) adopts a single-layer copper wire type.

3. The novel efficient composite permanent magnet motor Halbch iron core structure of claim 1, which is characterized in that: and the two sides of the winding hole (5) are provided with concave parts (6), and the concave parts (6) are arranged at the positions close to the inner ring surface.

4. The novel efficient composite permanent magnet motor Halbch iron core structure of claim 1, which is characterized in that: the winding holes (5) are 84 which are uniformly distributed on the circumference.

5. The novel efficient composite permanent magnet motor Halbch iron core structure of claim 1, which is characterized in that: the included angle of the edge lines at the two sides of the winding hole (5) is 4 degrees.

6. The novel efficient composite permanent magnet motor Halbch iron core structure of claim 1, which is characterized in that: the magnetic steel (4) is adhered to the rotor core (3) through heat-resistant glue.

7. The novel efficient composite permanent magnet motor Halbch iron core structure of claim 1, which is characterized in that: the number of the magnetic steels (4) is 136 which are uniformly distributed on the circumference.