CN111769714A

CN111769714A - Primary and secondary bimodulus permanent magnet synchronous linear motor

Info

Publication number: CN111769714A
Application number: CN202010744071.8A
Authority: CN
Inventors: 欧阳庆生; 李静
Original assignee: Zhongke Weizhi Intelligent Manufacturing Technology Jiangsu Co ltd
Current assignee: Zhongke Weizhi Intelligent Manufacturing Technology Jiangsu Co ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2020-10-13

Abstract

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.

Description

Primary and secondary bimodulus permanent magnet synchronous linear motor

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.

The first embodiment is as follows:

as shown in fig. 1, the primary and secondary dual-modular permanent magnet synchronous linear motor of this embodiment includes a primary component and a secondary component, and an air gap 5 is formed between the primary component and the secondary component.

The primary assembly comprises a first primary module 1, a second primary module 2 and a third primary module 3, as shown in fig. 2, each primary module is composed of a primary iron core 1-1 and an armature winding 1-2, the primary iron cores of the modules are completely identical and comprise back yokes and tooth groove structures, and 12 grooves are adopted; the armature windings 1-2 are arranged in the tooth grooves, and the armature windings of each primary module are arranged differently according to the distance between two adjacent primary modules. The distance between two adjacent primary modules is S₁＝(k₁+1/3)τ，k₁Is an integer, tau is the pole pitch, and the electrical angle between the in-phase windings of adjacent primary modules is 60 deg.. The winding sequence of each primary module is reset, 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 each phase of winding of the three phases comprises two coils close to end teeth, so that the spatial symmetrical distribution is realized, and the phenomenon of asymmetric inductance is eliminated.

The sub-assembly is composed of a plurality of sub-modules 4, each sub-module 4 adopting a 2-pole structure. As shown in FIG. 3, each secondary module 4 is composed of a permanent magnet 4-1 and a secondary magnetA secondary iron core 4-2, each secondary module 4 having 2m permanent magnets 4-1, m being an integer. The permanent magnet 4-1 is attached to the secondary iron core 4-2 according to the N-S pole interphase distribution; the interval between two adjacent secondary modules 4 is S₂τ is the pole pitch, 2 τ.

Each section of secondary iron core 4-2 has a length of l₂Satisfy l₂2m τ, τ is the pole pitch; each primary module primary core has a length l₁Satisfy l₁≥l₂+S₂。

Example two:

as shown in fig. 4, the differences between the present embodiment and the first embodiment are: distance S between two adjacent primary modules₁＝(k₁+2/3) τ, τ being the polar distance, k₁The electrical angle between the in-phase windings of adjacent primary modules is 120 degrees, the winding sequence on each primary module is reset, 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, and the third primary module 3 is arrayed according to the sequence of C-Y-A-Z-B-X.

The primary and secondary dual-modular permanent magnet synchronous linear motor provided by the application is described in detail above, and a specific example is applied in the description to explain the principle and the implementation of the application, and the description of the above embodiment is only used to help understand the method and the core idea of the application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

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。