阅读说明：本技术 初次级双模块化永磁同步直线电机 (Primary and secondary bimodulus permanent magnet synchronous linear motor ) 是由 欧阳庆生 李静 于 2020-07-29 设计创作，主要内容包括：本发明涉及一种初次级双模块化永磁同步直线电机,包括初级组件和次级组件；初级组件分为多个初级模块,每个初级模块均由初级铁心和电枢绕组构成,初级铁心包括背轭和齿槽结构,电枢绕组设置在齿槽内；所述次级组件分为多个相同的次级模块,永磁体按照N-S极相间分布表贴在次级铁心表面；初级组件和次级组件之间为气隙。本发明同时实现了直线电机初级和次级的模块化设计,整个电机结构灵活可调,通过多段初级模块和多段次级模块的组合,既能获得长行程电机,也能获得大推力电机,增大电机的传送容量并提高电机的传输效率,可应用于各种自动化及智能化生产线上。(The invention relates to a primary and secondary double-modularization permanent magnet synchronous linear motor, which comprises a primary component and a secondary component; the primary assembly is divided into a plurality of primary modules, each primary module is composed of a primary iron core and an armature winding, the primary iron core comprises a back yoke and a tooth space structure, and the armature winding is arranged in the tooth space; the secondary assembly is divided into a plurality of same secondary modules, and the permanent magnets are attached to the surface of the secondary iron core according to the N-S pole interval distribution; an air gap is formed between the primary assembly and the secondary assembly. The invention realizes the modular design of the primary and the secondary of the linear motor at the same time, the whole motor structure is flexible and adjustable, and through the combination of the multi-section primary module and the multi-section secondary module, a long-stroke motor and a high-thrust motor can be obtained, the transmission capacity of the motor is increased, the transmission efficiency of the motor is improved, and the linear motor can be applied to various automatic and intelligent production lines.)

1. The utility model provides a primary and secondary bimodulus permanent magnetism synchronous linear electric motor which characterized in that: comprises a primary component and a secondary component, wherein an air gap (5) is arranged between the primary component and the secondary component;

the primary assembly comprises a plurality of primary modules, each primary module is composed of a primary iron core (1-1) and an armature winding (1-2), each primary iron core (1-1) comprises a back yoke and a tooth groove structure, and the armature windings (1-2) are arranged in the tooth grooves; the secondary assembly is composed of a plurality of secondary modules (4), each secondary module (4) is composed of a permanent magnet (4-1) and a secondary iron core (4-2), and the permanent magnets (4-1) are attached to the secondary iron cores (4-2) according to the N-S pole interval distribution.

2. The primary and secondary dual-modular permanent magnet synchronous linear motor of claim 1, wherein: the distance between two adjacent primary modules is S₁＝(k₁+1/3)τ，k₁Is an integer, tau is a polar distance, and the electrical angle between the same-phase windings of the adjacent primary modules is 60 degrees; and arranging the winding sequence on each primary module, wherein the first primary module (1) is arrayed according to the sequence of A-Z-B-X-C-Y, the second primary module (2) is arrayed according to the sequence of C-Y-A-Z-B-X, the third primary module (3) is arrayed according to the sequence of B-X-C-Y-A-Z, and the like.

3. The primary and secondary dual-modular permanent magnet synchronous linear motor of claim 1, wherein: distance S between two adjacent primary modules₁＝(k₁+2/3) τ, τ being the polar distance, k₁Is an integer, and the electrical angle between the same-phase windings of the adjacent primary modules is 120 degrees; and arranging the winding sequence on each primary module, wherein the first primary module (1) is arrayed according to the sequence of A-Z-B-X-C-Y, the second primary module (2) is arrayed according to the sequence of B-X-C-Y-A-Z, the third primary module (3) is arrayed according to the sequence of C-Y-A-Z-B-X, and the like.

4. The primary and secondary dual-modular permanent magnet synchronous linear motor of claim 1, wherein: each secondary module (4) is provided with 2m permanent magnets (4-1), and m is an integer; the interval between two adjacent secondary modules (4) is S₂τ is the pole pitch, 2 τ.

5. The primary and secondary dual-modular permanent magnet synchronous linear motor of claim 4, wherein: each section of secondary iron core (4-2) has a length of l₂Satisfy l₂τ is the pole pitch, 2m τ.

6. The primary and secondary pair of claim 5Synchronous linear electric motor of modularization permanent magnetism, its characterized in that: each primary module primary core has a length l₁Satisfy l₁≥l₂+S₂。

Technical Field

The invention belongs to the technical field of motors, and particularly relates to a primary-secondary double-modularized permanent magnet synchronous linear motor.

Background

The linear motor system abandons a complex transmission mechanism in the middle when in direct transmission, has the advantages of simple and reliable structure, large thrust, high efficiency and the like, and the application field of the linear motor system is gradually expanded to various fields of production and life. In automated and intelligent production line applications, the motion state between multiple loads needs to be dynamically adjusted. The conventional single mover module permanent magnet synchronous linear motor system in the industrial field can only realize the reciprocating motion of a single load, and the mode seriously restricts the production and transmission efficiency of the whole system. Therefore, a primary-level dual-modularized permanent magnet synchronous linear motor structure is provided, and the motor can flexibly adjust a long-stroke motor or a high-thrust motor through the combination of multiple sections of primary modules and multiple sections of secondary modules, so that the transmission capacity is increased, and the transmission efficiency is improved. Meanwhile, the modular structure can effectively inhibit the end effect of the linear motor, effectively offset the end force among the modules and inhibit the positioning force and thrust fluctuation of the linear motor system.

Disclosure of Invention

The invention aims to solve the technical problem of providing a primary-secondary dual-modularized permanent magnet synchronous linear motor, and solves the problems of single structure and large thrust fluctuation of a long-stroke single-rotor permanent magnet synchronous linear motor in the prior art.

In order to solve the technical problems, the invention adopts a technical scheme that: a primary and secondary double-modularization permanent magnet synchronous linear motor comprises a primary assembly and a secondary assembly, wherein an air gap is formed between the primary assembly and the secondary assembly;

the primary assembly comprises a plurality of primary modules, each primary module is composed of a primary iron core and an armature winding, each primary iron core comprises a back yoke and a tooth groove structure, and the armature winding is arranged in the tooth groove; the secondary assembly is composed of a plurality of secondary modules, each secondary module is composed of a permanent magnet and a secondary iron core, and the permanent magnets are attached to the secondary iron cores according to the N-S pole interval distribution.

Further, the distance between two adjacent primary modules is S₁＝(k₁+1/3)τ，k₁Is an integer, tau is a polar distance, and the electrical angle between the same-phase windings of the adjacent primary modules is 60 degrees; and arranging the winding sequence on each primary module, wherein the first primary module is arrayed according to the sequence of A-Z-B-X-C-Y, the second primary module is arrayed according to the sequence of C-Y-A-Z-B-X, the third primary module is arrayed according to the sequence of B-X-C-Y-A-Z, and the like.

Further, the distance S between two adjacent primary modules₁＝(k₁+2/3) τ, τ being the polar distance, k₁Is an integer which is the number of the whole,the electrical angle between the same-phase windings of the adjacent primary modules is 120 degrees; and arranging the winding sequence on each primary module, wherein the first primary module is arrayed according to the sequence of A-Z-B-X-C-Y, the second primary module is arrayed according to the sequence of B-X-C-Y-A-Z, the third primary module is arrayed according to the sequence of C-Y-A-Z-B-X, and the like.

Furthermore, each secondary module is provided with 2m permanent magnets, and m is an integer; the interval between two adjacent secondary modules is S₂τ is the pole pitch, 2 τ.

Further, each section of the secondary iron core has a length of l₂Satisfy l₂τ is the pole pitch, 2m τ.

Further, each primary module primary core has a length of l₁Satisfy l₁≥l₂+S₂。

The advantages of the invention are as follows:

(1) by the aid of the primary iron core modular structure and the reset of the winding sequence, end effects can be effectively inhibited, the phenomenon of asymmetric inductance is eliminated, and thrust fluctuation of the motor is reduced without influencing thrust output of the motor;

(2) the primary and secondary are modularized, and the structure of the motor is flexible and adjustable through free combination of the primary multi-module and the secondary multi-module, so that a long-stroke motor can be obtained, a high-thrust motor can be obtained, the transmission capacity of the motor is increased, and the transmission efficiency of the motor is improved.

Drawings

Fig. 1 is a schematic structural diagram of a primary and secondary dual-modular permanent magnet synchronous linear motor according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of the structure of each primary module of the present invention.

Fig. 3 is a schematic structural diagram of each secondary module of the present invention.

Fig. 4 is a schematic structural diagram of a primary and secondary dual-modular permanent magnet synchronous linear motor according to a second embodiment of the present invention.

Description of reference numerals: 1. a first primary module; 1-1, a primary core; 1-2, armature winding; 2. a second primary module; 3. a third primary module; 4. a secondary module; 4-1, permanent magnets; 4-2, a secondary core; 5. an air gap.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be embodied in other specific forms other than those described herein, and it will be apparent to those skilled in the art that the present invention may be practiced without departing from the spirit and scope of the present invention.