CN109951049A - Synchronous Reluctance Linear Motor - Google Patents

Abstract

The present invention discloses a kind of synchronous reluctance formula linear motor, including stator and mover, several are provided in stator along the groove of stator length directional spreding, winding is wound in groove, air that several groups are distributed along mover length direction is provided in mover every magnetic magnetic bridge group, every group of air includes at least one air every magnetic magnetic bridge every magnetic magnetic bridge group, each air every magnetic magnetic bridge be arc shape structure and each air every the both ends of magnetic magnetic bridge towards stator curving；The present invention in mover by being arranged air that several groups are distributed along mover length direction every magnetic magnetic bridge group, every group of air includes at least one air every magnetic magnetic bridge every magnetic magnetic bridge group, each air every magnetic magnetic bridge be arc shape structure and each air every the both ends of magnetic magnetic bridge towards stator curving, so, it can reduce the weight of mover, so as to improve the efficiency of synchronous reluctance formula linear motor.

Description

Synchronous Reluctance Linear Motor

technical field

The invention relates to the technical field of linear motors, in particular to a synchronous reluctance type linear motor.

Background technique

Currently, known linear motors on the market generally include permanent magnet linear motors and induction linear motors. The permanent magnet linear motor has a high cost, and the permanent magnet linear motor always exists when it is working, so when the permanent magnet linear motor fails, there will be a phenomenon that cannot be demagnetized, which will give the safety of the motor. Bring hidden dangers; and induction linear motors have problems of high loss and low efficiency.

SUMMARY OF THE INVENTION

In view of the deficiencies of the prior art, the present invention provides a synchronous reluctance linear motor, which includes several groups of air-isolated magnetic bridge groups distributed along the length of the mover in the mover, and each group of air-isolated magnetic bridge groups Each includes at least one air-isolated magnetic bridge, each air-isolated magnetic bridge is an arc-shaped structure, and both ends of each air-isolated magnetic bridge are bent toward the stator side, so that the weight of the mover can be reduced , so that the efficiency of the synchronous reluctance linear motor can be improved.

The synchronous reluctance linear motor of the present invention includes a stator and a mover. The stator is provided with several grooves distributed along the length of the stator, windings are wound in the grooves, and the mover is provided with several groups along the length of the mover. The air magnetic isolation magnetic bridge group distributed in the direction, each group of air magnetic isolation magnetic bridge group includes at least one air magnetic isolation magnetic bridge, each air magnetic isolation magnetic bridge is arc-shaped structure, and each air magnetic isolation magnetic bridge has two parts. Both ends are bent towards the stator side.

In the synchronous reluctance linear motor of the present invention, each group of air-isolated magnetic bridges includes several air-isolated magnetic bridges, and the several air-isolated magnetic bridges in each group of air-isolated magnetic bridges are composed of adjacent magnetic bridges. One side of the stator is spaced toward the side remote from the stator.

In the synchronous reluctance type linear motor of the present invention, two adjacent air magnetic isolation magnetic bridges in each group of air magnetic isolation magnetic bridge groups are arranged parallel to each other.

In the synchronous reluctance linear motor of the present invention, the distance between two adjacent air magnetic isolation magnetic bridges in each group of air magnetic isolation magnetic bridge groups is gradually reduced, and the air magnetic isolation magnetic bridge group in each group is closest to the stator. The distance between two adjacent air-isolated magnetic bridges on the side is greater than the distance between two adjacent air-isolated magnetic bridges farthest from the stator.

In the synchronous reluctance linear motor of the present invention, each group of air-isolated magnetic bridges includes one, two, three or four air-isolated magnetic bridges.

In the synchronous reluctance type linear motor of the present invention, the aperture of each air magnetic isolation magnetic bridge in each group of air magnetic isolation magnetic bridge groups gradually increases from one end to the other end.

In the present invention, several groups of air magnetic isolation magnetic bridge groups distributed along the length direction of the mover are arranged in the mover, each group of air magnetic isolation magnetic bridge groups includes at least one air magnetic isolation magnetic bridge, and each air magnetic isolation magnetic bridge is It is an arc-shaped structure and both ends of each air-isolated magnetic bridge are bent toward the stator side, so that the weight of the mover can be reduced, thereby improving the efficiency of the synchronous reluctance linear motor.

Description of drawings

The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The schematic embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation of the present application. In the attached image:

Fig. 1 is the structural representation of stator and mover;

FIG. 2 is a schematic structural diagram of another mover.

Detailed ways

Various embodiments of the present invention will be disclosed in the drawings below, and for the sake of clarity, many practical details will be described together in the following description. It should be understood, however, that these practical details should not be used to limit the invention. That is, in some embodiments of the invention, these practical details are unnecessary. In addition, for the purpose of simplifying the drawings, some well-known structures and components will be shown in a simple schematic manner in the drawings.

In addition, descriptions such as “first”, “second”, etc. in the present invention are only for the purpose of description, and do not refer to the meaning of order or sequence, nor are they used to limit the present invention. The components or operations are described by the same technical terms, and should not be construed as indicating or implying their relative importance or implying the quantity of the indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In addition, the technical solutions between the various embodiments can be combined with each other, but must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of such technical solutions does not exist. , is not within the scope of protection required by the present invention.

The synchronous reluctance linear motor of the present invention includes a stator 1 and a mover 2. The stator 1 is provided with a plurality of grooves 11 distributed along the length direction of the stator 1. The coils 3 are wound in the grooves 11. There are several groups of air magnetic isolation magnetic bridge groups distributed along the length direction of the mover 2, each group of air magnetic isolation magnetic bridge groups includes at least one air magnetic isolation magnetic bridge 21, and each air magnetic isolation magnetic bridge 21 is arc-shaped structure and both ends of each air-isolated magnetic bridge 21 are bent toward one side of the stator 1 .

Each group of air magnetic isolation magnetic bridge groups includes several air magnetic isolation magnetic bridges 21 , and the several air magnetic isolation magnetic bridges 21 in each group of air magnetic isolation magnetic bridge groups are from the side close to the stator 1 to the side away from the stator 1 . One side is spaced apart; since each group of air magnetic isolation magnetic bridges includes several air magnetic isolation magnetic bridges, the weight of the mover can be reduced, thereby improving the efficiency of the synchronous reluctance linear motor.

The adjacent two air-isolated magnetic bridges 21 in each group of air-isolated magnetic bridges are arranged parallel to each other; In this way, the output torque of the synchronous reluctance linear motor can be improved.

The distance between the adjacent two air magnetic isolation magnetic bridges 21 in each group of air magnetic isolation magnetic bridge groups is gradually reduced, and the adjacent two air magnetic isolation magnetic bridges in each group of air magnetic isolation magnetic bridge groups closest to the side of the stator 1 are gradually reduced. The distance between the bridges 21 is greater than the distance between two adjacent air-isolated magnetic bridges 21 farthest from the stator 1 .

Each group of air-isolated magnetic bridges includes one, two, three, or four air-isolated magnetic bridges 21; when multiple air-isolated magnetic bridges are used in each group of air-isolated magnetic bridges, the dynamic It can improve the efficiency of the synchronous reluctance linear motor.

As shown in Fig. 2, the aperture of each air magnetic isolation magnetic bridge 21 in each group of air magnetic isolation magnetic bridge groups gradually increases from one end to the other end; after adopting this structure, each group of air magnetic isolation magnetic bridges Each air-isolated magnetic bridge in the bridge group forms a non-left-right symmetrical structure, so that it has the advantage of low torque ripple, thereby improving the torque quality.

When the invention is in operation, the windings on the stator are connected to a voltage, a current is generated in the windings, and the air-isolated magnetic bridge on the mover plans a magnetic circuit to generate a reluctance torque, so that the mover can be driven to move in the horizontal direction; In the invention, several groups of air magnetic isolation magnetic bridge groups distributed along the length direction of the mover are arranged in the mover, each group of air magnetic isolation magnetic bridge groups includes at least one air magnetic isolation magnetic bridge, and each air magnetic isolation magnetic bridge is The arc-shaped structure and both ends of each air-isolated magnetic bridge are bent toward the stator side, so that the weight of the mover can be reduced, thereby improving the efficiency of the synchronous reluctance linear motor.

The above description is merely an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and variations of the present invention are possible for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

Claims (6)

1. A synchronous reluctance linear motor, comprising a stator (1) and a mover (2), the stator (1) is provided with a plurality of grooves (11) distributed along the length direction of the stator (1), so A winding (3) is wound in the groove (11), and it is characterized in that: the mover (2) is provided with several groups of air magnetic isolation magnetic bridge groups distributed along the length direction of the mover (2), each group The air magnetic isolation magnetic bridge groups each include at least one air magnetic isolation magnetic bridge (21), each air magnetic isolation magnetic bridge (21) has an arc-shaped structure, and both ends of each air magnetic isolation magnetic bridge (21) face toward each other. The stator (1) is bent on one side. 2. The synchronous reluctance linear motor according to claim 1, characterized in that, each group of air-isolated magnetic bridges comprises several air-isolated magnetic bridges (21), and in each group of air-isolated magnetic bridges The several air-isolated magnetic bridges (21) are distributed at intervals from the side close to the stator (1) to the side away from the stator (1). 3 . The synchronous reluctance linear motor according to claim 2 , characterized in that, two adjacent air magnetic isolation magnetic bridges ( 21 ) in each group of air magnetic isolation magnetic bridge groups are arranged parallel to each other. 4 . 4. The synchronous reluctance linear motor according to claim 2, characterized in that, the spacing between two adjacent air magnetic isolation magnetic bridges (21) in each group of air magnetic isolation magnetic bridge groups is gradually reduced, and each group The distance between two adjacent air magnetic isolation magnetic bridges (21) on the side closest to the stator (1) in the air magnetic isolation magnetic bridge group is greater than the distance between the two adjacent air magnetic isolation magnetic bridges farthest from the stator (1). (21) spacing between. 5. The synchronous reluctance linear motor according to any one of claims 1-4, wherein each group of air-isolated magnetic bridges comprises one or two or three or four air-isolated magnetic bridges ( twenty one). 6. The synchronous reluctance linear motor according to any one of claims 1-4, characterized in that, the aperture of each air magnetic isolation magnetic bridge (21) in each group of air magnetic isolation magnetic bridge groups is determined by one end of the aperture. Gradually increase towards the other end.