CN110011513B - Modularized primary permanent magnet type bilateral switch reluctance linear motor - Google Patents

Abstract

The present invention discloses a modular primary permanent magnet bilateral switched reluctance linear motor, wherein the primary of the motor is modularized, and each primary module is composed of a magnetic material, an armature winding, and a permanent magnet distributed up and down between two magnetic blocks, and the secondary is composed only of a magnetic material. The permanent magnets are magnetized in parallel, and the magnetization directions of the permanent magnets corresponding to adjacent primary modules are the same, and the magnetization directions of the upper and lower corresponding permanent magnets belonging to the same primary module are opposite. When unloaded, the permanent magnet magnetic circuit is short-circuited through the primary magnetic block, and the magnetic lines of force hardly pass through the air gap and the secondary, thereby reducing the positioning force. When loaded, the magnetic lines of force form a series magnetic circuit between the primary magnetic block and the bilateral secondary, thereby generating an electromagnetic force. In addition, the present invention has the advantages of a simple secondary structure and a large thrust density, and the permanent magnet is placed in a short primary to reduce the cost of the motor, and can be applied to long secondary occasions such as elevator drive systems.

Description

A modular primary permanent magnet bilateral switched reluctance linear motor

Technical Field

The invention relates to a modular primary permanent magnet bilateral switched reluctance linear motor, belonging to the technical field of motor manufacturing.

Background technique

With the development of industry, linear motors are increasingly used in various occasions. In the fields of rail transit, vertical lift, etc., traditional rotary motors need to rely on mechanical transmission devices, resulting in low efficiency. Compared with rotary motors, linear motor drive systems directly generate electromagnetic force, with advantages such as high power density, small size, and low noise. Therefore, the technology of using linear motors instead of rotary motors can overcome the above-mentioned shortcomings of rotary motors in the above-mentioned application occasions, improve the efficiency of the entire system, and have bright application prospects in the fields of rail transit, vertical lift, etc.

In recent years, the traditional switched reluctance motor has attracted wide attention due to its simple and sturdy structure, low cost, reliable operation and easy maintenance. The long secondary of the bilateral switched reluctance linear motor is only composed of magnetic conductive materials, and the primary is only composed of armature windings and magnetic conductive materials. It has high reliability and low cost and is suitable for long-stroke conditions. However, the traditional switched reluctance linear motor still has problems such as low thrust density and large thrust fluctuation, which limits its application in vertical lifting fields such as elevators.

The modular primary permanent magnet bilateral switched reluctance linear motor proposed in the present invention has the advantages of simple secondary structure and high power density, which improves the shortcomings of traditional switched reluctance motors. The bilateral long secondary is only composed of magnetic conductive materials, and the permanent magnet is installed on the short primary, which reduces the cost of the motor. Therefore, the motor structure has good application prospects in long-stroke fields such as vertical lifting and other elevators.

Summary of the invention

Based on the technical deficiencies described in the background, the purpose of the present invention is to provide a modular primary permanent magnet bilateral switched reluctance linear motor. The motor secondary structure of the present invention is simple, and permanent magnets and armature windings are placed on the primary magnetic conductive material. The motor has a small positioning force, a simple and reliable structure, and a high power factor and efficiency. The complementary structure in the present invention can effectively reduce the thrust fluctuation of the motor, thereby reducing the vibration of the motor during operation and improving its reliability.

To achieve the above object, the present invention is implemented through the following technical solutions:

A modular primary permanent magnet bilateral switched reluctance linear motor of the present invention comprises a primary (11) and a secondary (10), wherein an air gap exists between the primary (11) and the secondary (10). The primary (11) is composed of a primary module (110), each of the primary modules (110) comprising two magnetic conductive blocks (111), an armature winding (112), and a permanent magnet (113) disposed between the magnetic conductive blocks (111) and distributed vertically, and the secondary (10) is composed of a secondary module (100). A connecting bridge (114) is provided between two adjacent primary modules (110), and the connecting bridge (114) is made of a magnetic conductive or non-magnetic conductive material.

Each primary module (115) is composed of n*m primary modules (110), wherein n is the number of primary modules (110) belonging to the same phase contained in one primary module (115), and m is the number of motor phases. K primary modules (115) constitute a complete motor primary (11).

The distance between the central axes of two adjacent phase primary modules (110) belonging to the same primary module (115) is λ ₁ ; when k≥2, the distance between the central axes of two adjacent primary modules (115) is λ ₂ ; when n≥2, the distance between the central axes of two adjacent primary modules (110) of the same phase in the same primary module (115) is λ ₃ ; the distance between the central axes of two adjacent secondary modules (100) is τ _s ; wherein λ ₁ , λ ₂ , λ ₃ and τ _s satisfy the following relationship:

Wherein, i is a non-negative integer and p is a positive integer.

If the hth order thrust harmonic is to be eliminated, λ ₁ , λ ₂ , λ ₃ and τ _s satisfy the following relationship:

Wherein, j is a non-negative integer, and the specified thrust harmonics can be eliminated by forming a complementary structure. The k consecutive primary modules (115) are controlled separately, and the power supply of adjacent primary modules (115) differs by 1/(2h) electrical cycle.

Furthermore, the armature windings (112) within the same primary module (110) are wound in opposite directions and are in the same phase.

Furthermore, the permanent magnets (113) are magnetized horizontally, the permanent magnets (113) corresponding to adjacent primary modules (110) have the same magnetization direction, and the permanent magnets (113) corresponding to the upper and lower parts of the same primary module (110) have opposite magnetization directions. When unloaded, the permanent magnet magnetic circuit is short-circuited through the magnetic conductive block (111), thereby reducing the positioning force.

Furthermore, when λ ₁ , λ ₂ , λ ₃ and τ _s satisfy the relation (1), the k primary modules (115) are connected in series to form a whole or are controlled separately.

Furthermore, when λ ₁ , λ ₂ , λ ₃ and τ _s satisfy the relation (2), the motor forms a complementary structure, the k consecutive primary modules (115) are controlled separately, and the power supply of adjacent primary modules (115) differs by 1/(2h) electrical cycle.

Preferably, the armature winding (112) is made of copper or superconducting material.

As a transformation form of the above-mentioned motor, the modular primary permanent magnet bilateral switched reluctance linear motor is a generator or a motor.

The motor of the present invention mainly has the following advantages:

The present invention proposes a modular primary permanent magnet bilateral switched reluctance linear motor, which combines the advantages of a simple linear induction motor structure with the advantages of a traditional permanent magnet linear motor such as high power factor and high efficiency, and improves the disadvantages of a traditional switched reluctance motor such as low power density while having the advantages of high starting torque and high efficiency of the switched reluctance motor. The motor positioning force of the present invention is small, and through a complementary structure, the present invention can eliminate specified thrust harmonics, reduce thrust fluctuations, and thus effectively reduce motor thrust fluctuations and noise, improve its reliability, and reduce system requirements. The present invention has good development prospects due to its performance advantages such as high power density, output torque, and high reliability.

The present invention is further described with reference to the accompanying drawings and embodiments:

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the motor structure of a modular primary permanent magnet bilateral switched reluctance linear motor embodiment 1 of the present invention;

FIG2 is a schematic diagram of the motor structure of a modular primary permanent magnet bilateral switched reluctance linear motor embodiment 2 of the present invention;

FIG3 is a schematic diagram of the motor structure of a modular primary permanent magnet bilateral switched reluctance linear motor embodiment 3 of the present invention, the motor is a complementary structure, and can eliminate thrust harmonics of specified suborders;

FIG4 is a schematic diagram of the motor structure of a modular primary permanent magnet bilateral switched reluctance linear motor embodiment 4 of the present invention, wherein each primary module (115) includes two primary modules (110) that are in phase;

FIG5 is a schematic diagram of the motor structure of a modular primary permanent magnet bilateral switched reluctance linear motor embodiment 5 of the present invention, in which the motor in this embodiment is a five-phase motor;

Among them, 10-secondary, 11-primary, 100-secondary module, 110-primary module, 111-magnetic block, 112-armature winding, 113-permanent magnet, 114-connecting bridge, 115-primary module.

Detailed ways

The present invention provides a modular primary permanent magnet bilateral switched reluctance linear motor. To make the purpose, structural features and technical means of the invention easy to understand, the present invention is further described in detail below in conjunction with specific implementation methods. It should be clear that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

The present invention provides a modular primary permanent magnet bilateral switched reluctance linear motor, comprising a primary 11 and a secondary 10, wherein an air gap exists between the primary 11 and the secondary 10; each of the primary modules 110 comprises two magnetic conductive blocks 111 and an armature winding 112, and two permanent magnets 113 disposed between the two magnetic conductive blocks 111 and arranged in an upper and lower manner; the secondary 10 comprises a secondary module 100;

There is a connecting bridge 114 between two adjacent primary modules 110 , and the connecting bridge 114 is made of magnetic conductive or non-magnetic conductive material;

The distance between the central axes of two adjacent primary modules 110 of the same primary module 115 is λ ₁ ; when k≥2, the distance between the central axes of two adjacent primary modules 115 is λ ₂ ; when n≥2, the distance between the central axes of two adjacent primary modules 110 of the same phase in the same primary module 115 is λ ₃ ; the distance between the central axes of two adjacent secondary modules 100 is τ _s ;

Among them, λ ₁ , λ ₂ , λ ₃ and τ _s satisfy the following relationship:

Wherein, i is a non-negative integer and p is a positive integer.

If the hth order thrust harmonic is to be eliminated, λ ₁ , λ ₂ , λ ₃ and τ _s satisfy the following relationship:

Wherein, j is a non-negative integer, and the thrust harmonics can be eliminated by forming a complementary structure. The k consecutive primary modules (115) are controlled separately, and the power supply of adjacent primary modules (115) differs by 1/(2h) electrical cycle.

Furthermore, the armature windings (112) within the same primary module (110) are wound in opposite directions and are in the same phase.

Furthermore, the permanent magnets (113) are magnetized horizontally, the permanent magnets (113) corresponding to adjacent primary modules (110) have the same magnetization direction, and the permanent magnets (113) corresponding to the upper and lower parts of the same primary module (110) have opposite magnetization directions. When unloaded, the permanent magnets generate a magnetic circuit that is short-circuited through the magnetic conductive block.

Furthermore, when λ ₁ , λ ₂ , λ ₃ and τ _s satisfy the relation (1), the k primary modules (115) are connected in series to form a whole or are controlled separately.

Furthermore, when λ ₁ , λ ₂ , λ ₃ and τ _s satisfy the relation (2), the motor forms a complementary structure, the k consecutive primary modules (115) are controlled separately, and the power supply of adjacent primary modules (115) differs by 1/(2h) electrical cycle.

Preferably, the armature winding 112 is made of copper or superconducting material.

As a transformation form of the above-mentioned motor, the modular primary permanent magnet bilateral switched reluctance linear motor is a generator or a motor.

Example 1

A modular primary permanent magnet bilateral switched reluctance linear motor of the present invention is shown in FIG1 , and includes a primary 11 and a secondary 10, and an air gap is formed between the primary 11 and the secondary 10. The secondary 10 is composed of a secondary module 100, and the primary 11 is composed of a primary module 110, and each primary module 110 includes two magnetic blocks 111, an armature winding 112, and permanent magnets 113 distributed up and down between the magnetic blocks 111. The armature windings 112 in the same primary module 110 have opposite winding directions and are in the same phase; the permanent magnets 113 are magnetized horizontally, and the magnetization directions of the permanent magnets 113 corresponding to the adjacent primary modules 110 are the same, and the magnetization directions of the permanent magnets 113 corresponding to the upper and lower parts of the same primary module 110 are opposite, and the permanent magnets generate a magnetic circuit that is short-circuited through the magnetic blocks when unloaded. There is a connecting bridge 114 between two adjacent primary modules 110, and the connecting bridge 114 is a magnetic conductive or non-magnetic conductive material.

The distance between the central axes of two adjacent phase primary modules 110 belonging to the same primary module 115 is λ ₁ ; when k ≥ 2, the distance between the central axes of two adjacent primary modules 115 is λ ₂ ; n is the number of primary modules 110 of the same phase contained in the same primary module 115, when n ≥ 2, the distance between the central axes of two adjacent primary modules 110 of the same phase in the same primary module 115 is λ ₃ ; the distance between the central axes of two adjacent secondary modules 100 is τ _s ; wherein λ ₁ , λ ₂ , λ ₃ and τ _s satisfy the relation (1),

In this embodiment, m=3, n=1, k=2, i=2, where the positive and negative signs are negative. Therefore, λ ₁ =5/3τ _s , λ ₂ =3λ ₁ =5τ _s , where m is the number of phases of the motor of the present invention. The motor in this embodiment is a three-phase motor with ABC phases, and the armature winding is ABCABC cycle from left to right; n is the number of primary modules 110 of the same phase contained in each primary module 115, in this embodiment n=1; k=2, that is, two primary modules 115 constitute a complete primary 11.

The structural features of this embodiment are as follows: First, compared with the linear induction motor, the motor of the present invention has a higher power factor and efficiency; second, compared with the traditional permanent magnet linear synchronous motor, when the motor of the present invention is unloaded, the permanent magnet magnetic circuit is short-circuited through the magnetic conductive block, so the positioning force is small, the utilization rate of the permanent magnet is also higher, and the cost is lower; third, compared with the traditional switched reluctance motor, the motor of the present invention has higher output torque and power density.

Example 2

Another step ratio of a modular primary permanent magnet bilateral switched reluctance linear motor of the present invention is shown in FIG2 , and includes a primary 11 and a secondary 10, and an air gap exists between the primary 11 and the secondary 10. The secondary 10 is composed of a secondary module 100, and the primary 11 is composed of a primary module 110, and each primary module 110 includes two magnetic blocks 111, an armature winding 112, and permanent magnets 113 distributed up and down between the magnetic blocks 111. The armature windings 112 in the same primary module 110 have opposite winding directions and are in the same phase; the permanent magnets 113 are magnetized horizontally, and the magnetization directions of the permanent magnets 113 corresponding to the adjacent primary modules 110 are the same, and the magnetization directions of the permanent magnets 113 corresponding to the upper and lower parts of the same primary module 110 are opposite. When unloaded, the permanent magnet magnetic circuit is short-circuited through the magnetic blocks to reduce the positioning force.

The distance between the central axes of two adjacent phase primary modules 110 belonging to the same primary module 115 is λ ₁ ; when k ≥ 2, the distance between the central axes of two adjacent primary modules 115 is λ ₂ ; n is the number of primary modules 110 of the same phase contained in the same primary module 115, when n ≥ 2, the distance between the central axes of two adjacent primary modules 110 of the same phase in the same primary module 115 is λ ₃ ; the distance between the central axes of two adjacent secondary modules 100 is τ _s ; wherein λ ₁ , λ ₂ , λ ₃ and τ _s satisfy the relation (1),

In this embodiment, m=3, n=1, k=2, i=1, where the positive and negative signs are positive. Therefore, λ ₁ =4/3τ _s , λ ₂ =3λ ₁ =4τ _s . Wherein m is the number of phases of the motor of the present invention. The motor of this embodiment is a three-phase motor, which is ABC three-phase, and the armature winding is ACBACB cycle from left to right; n is the number of primary modules 110 belonging to the same phase contained in each primary module 115. In this embodiment, each primary module 115 contains a primary module 110 belonging to the same phase; k=2, that is, two primary modules 115 constitute a complete primary 11.

The difference between this example and Example 1 is that the primary and secondary length quantity relationship of Example 1 is λ ₂ =5τ _s , and the primary and secondary length quantity relationship of Example 2 is λ ₂ =4τ _s . The motor of Example 1 has a larger output torque, smaller torque pulsation, and higher power density at low speed, while the motor of Example 2 has better performance at high speed.

Example 3

A modular primary permanent magnet bilateral switched reluctance linear motor of the present invention, as shown in FIG3 , is a complementary structure motor, including a primary 11 and a secondary 10, and an air gap exists between the primary 11 and the secondary 10. The secondary 10 is composed of a secondary module 100, and the primary 11 is composed of a primary module 110, each of the primary modules 110 includes two magnetic blocks 111, an armature winding 112, and permanent magnets 113 distributed up and down between the magnetic blocks 111. The armature windings 112 in the same primary module 110 have opposite winding directions and are in the same phase; the permanent magnets 113 are magnetized horizontally, the magnetization directions of the permanent magnets 113 corresponding to the adjacent primary modules 110 are the same, and the magnetization directions of the permanent magnets 113 corresponding to the upper and lower parts of the same primary module 110 are opposite, and the permanent magnet magnetic circuit is short-circuited through the magnetic blocks when unloaded, reducing the positioning force.

The distance between the central axes of two adjacent primary modules 110 of the same primary module 115 is λ ₁ ; when k ≥ 2, the distance between the central axes of two adjacent primary modules 115 is λ ₂ ; n is the number of primary modules 110 of the same phase contained in the same primary module 115, when n ≥ 2, the distance between the central axes of two adjacent primary modules 110 of the same phase in the same primary module 115 is λ ₃ ; the distance between the central axes of two adjacent secondary modules 100 is τ _s ; wherein λ ₁ , λ ₂ , λ ₃ and τ _s satisfy the relation (2),

In this embodiment, m=3, n=1, i=1, j=0, h=1, k=2, where the positive and negative signs are positive, so λ ₁ =4/3τ _s , λ ₂ =4.5τ _s . Wherein m is the number of phases of the motor of the present invention. The motor of this embodiment is a three-phase motor, which is ABC three-phase, and the armature winding is ACBACB cycle from left to right; n is the number of primary modules 110 belonging to the same phase contained in each primary module 115, and each module of this embodiment contains 1 primary module 110 belonging to the same phase; the embodiment of the present invention is a complementary structure, and the relative positions of adjacent primary modules 115 and secondary 10 are different, staggered by 1/(2h) electrical cycles, and the thrust harmonics of the specified order can be eliminated by the corresponding structure; k=2, that is, two primary modules 115 constitute a complete primary 11.

This embodiment has the following characteristics: the motor can eliminate a certain thrust harmonic by adopting a complementary structure, thereby reducing thrust fluctuation and improving system stability.

Example 4

A modular primary permanent magnet bilateral switched reluctance linear motor, as shown in FIG4 , includes a primary 11 and a secondary 10, with an air gap between the primary 11 and the secondary 10. The secondary 10 is composed of a secondary module 100, and the primary 11 is composed of a primary module 110. Each primary module 110 includes two magnetic blocks 111, an armature winding 112, and permanent magnets 113 distributed up and down between the magnetic blocks 111. The armature windings 112 in the same primary module 110 have opposite winding directions and are in the same phase; the permanent magnets 113 are magnetized horizontally, the magnetization directions of the permanent magnets 113 corresponding to the adjacent primary modules 110 are the same, and the magnetization directions of the permanent magnets 113 corresponding to the upper and lower parts of the same primary module 110 are opposite. When unloaded, the permanent magnet magnetic circuit is short-circuited through the magnetic blocks to reduce the positioning force.

The distance between the central axes of two adjacent phase primary modules 110 belonging to the same primary module 115 is λ ₁ ; when k ≥ 2, the distance between the central axes of two adjacent primary modules 115 is λ ₂ ; n is the number of primary modules 110 of the same phase contained in the same primary module 115, when n ≥ 2, the distance between the central axes of two adjacent primary modules 110 of the same phase in the same primary module 115 is λ ₃ ; the distance between the central axes of two adjacent secondary modules 100 is τ _s ; wherein λ ₁ , λ ₂ , λ ₃ and τ _s satisfy the relation (1),

In this embodiment, m=3, n=2, i=4, p=2, k=1, where the positive and negative signs are positive, therefore, λ ₁ =13/3τ _s , λ ₃ =2τ _s . Wherein m is the number of phases of the motor of the present invention, the motor of this embodiment is a three-phase motor, ABC three-phase, the armature winding is AACCBB cycle from left to right; n is the number of primary modules 110 of the same phase contained in each primary module 115, in this embodiment each primary module 115 contains 2 primary modules 110 of the same phase; k=1, that is, one primary module 115 constitutes a complete primary 11.

The structural features of this embodiment are as follows: each primary module 115 includes two primary modules 110 in the same phase, that is, n=2. The primary modules in the same phase in this embodiment are arranged continuously, which can make the power supply of each phase more compact, reduce the complexity of the power supply equipment setting, and improve the system fault tolerance.

Example 5

A modular primary permanent magnet bilateral switched reluctance linear motor of the present invention, as shown in FIG5 , is a five-phase motor.

It includes a primary 11 and a secondary 10, and there is an air gap between the primary 11 and the secondary 10. The secondary 10 is composed of a secondary module 100, and the primary 11 is composed of a primary module 110. Each of the primary modules 110 includes two magnetic blocks 111, an armature winding 112, and permanent magnets 113 distributed up and down between the magnetic blocks 111. The armature windings 112 in the same primary module 110 have opposite winding directions and are in the same phase; the permanent magnets 113 are magnetized horizontally, the magnetization directions of adjacent permanent magnets 113 are the same, and the magnetization directions of the upper and lower corresponding permanent magnets 113 are opposite. When unloaded, the permanent magnet magnetic circuit is short-circuited through the magnetic blocks to reduce the positioning force.

The distance between the central axes of two adjacent phase primary modules 110 belonging to the same primary module 115 is λ ₁ ; when k ≥ 2, the distance between the central axes of two adjacent primary modules 115 is λ ₂ ; n is the number of primary modules 110 of the same phase contained in the same primary module 115, when n ≥ 2, the distance between the central axes of two adjacent primary modules 110 of the same phase in the same primary module 115 is λ ₃ ; the distance between the central axes of two adjacent secondary modules 100 is τ _s ; wherein λ ₁ , λ ₂ , λ ₃ and τ _s satisfy the relation (1),

In this embodiment, m=5, n=1, i=2, k=1, where the positive and negative signs are negative. Therefore, λ ₁ =9/5τ _s , λ ₂ =5λ ₁ =9τ _s . Wherein m is the number of phases of the motor of the present invention. The motor of this embodiment is a five-phase motor, which is ABCDE five phases, and the armature winding is ABCDE cycles from left to right; n is the number of primary modules 110 belonging to the same phase contained in each primary module. In this embodiment, each primary module contains a primary module 110 belonging to the same phase; k=1, that is, one primary module 115 constitutes a complete primary 11. Unlike the motor of embodiment 1 which is a three-phase motor, this embodiment is a five-phase motor.

The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims (4)

1. A modularized primary permanent magnet type bilateral switch reluctance linear motor comprises a primary (11) and a secondary (10), wherein an air gap is arranged between the primary (11) and the secondary (10), and the modularized primary permanent magnet type bilateral switch reluctance linear motor is characterized in that,

The primary (11) is composed of primary modules (110), each primary module (110) comprises two magnetic conduction blocks (111), an armature winding (112) and permanent magnets (113) which are arranged between the magnetic conduction blocks (111) and distributed up and down, the secondary (10) is of a tooth slot structure and is composed of secondary modules (100),

N x m primary modules (110) form a primary module (115), wherein n is the number of primary modules (110) belonging to the same phase contained in one primary module (115), m is the number of motor phases, and k primary modules (115) form a complete motor primary (11);

The distance between the central axes of two adjacent primary modules (110) belonging to the same primary module (115) is lambda ₁; when k is more than or equal to 2, the distance between the central axes of two adjacent primary modules (115) is lambda ₂; when n is more than or equal to 2, the distance between the central axes of two adjacent in-phase primary modules (110) in the same primary module (115) is lambda ₃; the distance between the central axes of two adjacent secondary modules (100) is tau _s; wherein λ ₁、λ₂、λ₃ and τ _s satisfy the following relationship:

Or (b)

Wherein i and j are non-negative integers, p and h are positive integers, and h is the number of thrust harmonics eliminated by the structure for the relation (2);

The armature windings (112) in the same primary module (110) are wound in opposite directions and belong to the same phase;

The permanent magnets (113) are horizontally magnetized, the magnetizing directions of the permanent magnets (113) corresponding to the adjacent primary modules (110) are the same, the magnetizing directions of the permanent magnets (113) corresponding to the upper and lower primary modules (110) are opposite, and the magnetic circuits generated by the permanent magnets are short-circuited through the magnetic conducting blocks (111) during no-load, so that the positioning force can be reduced;

When lambda ₁、λ₂、λ₃ and tau _s meet the relation (1), k primary modules (115) are connected in series to form an integral or separate control; when lambda ₁、λ₂、λ₃ and tau _s meet the relation (2), adjacent primary modules (115) in the motor form a complementary structure, k continuous primary modules (115) are controlled separately, and the power supply of the adjacent primary modules (115) is different by 1/(2 h) of electric cycles.

2. A modular primary permanent magnet double sided switched reluctance linear motor according to claim 1, characterized in that there is a connecting bridge (114) between two adjacent primary modules (110), the connecting bridge (114) being of magnetically conductive or non-magnetically conductive material.

3. A modular primary permanent magnet double sided switched reluctance linear motor according to claim 1 or 2, characterized in that the armature winding (112) is copper or superconducting material.

4. A modular primary permanent magnet double sided switched reluctance linear motor according to claim 1 or 2, characterized in that the modular primary permanent magnet double sided switched reluctance linear motor is a generator or a motor.