CN112087117B - omega-I type stator transverse flux permanent magnet linear motor - Google Patents
omega-I type stator transverse flux permanent magnet linear motor Download PDFInfo
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- CN112087117B CN112087117B CN202010849206.7A CN202010849206A CN112087117B CN 112087117 B CN112087117 B CN 112087117B CN 202010849206 A CN202010849206 A CN 202010849206A CN 112087117 B CN112087117 B CN 112087117B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors
- H02K41/031—Synchronous motors; Motors moving step by step; Reluctance motors of the permanent magnet type
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/03—Machines characterised by aspects of the air-gap between rotor and stator
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/12—Transversal flux machines
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Linear Motors (AREA)
Abstract
The invention discloses an omega-I type stator transverse flux permanent magnet linear motor, which relates to the field of permanent magnet motors and comprises an omega type stator iron core, an I type stator iron core, a rotor iron core, a permanent magnet, a rotor bracket of a non-magnetic conductive material and an armature winding; the omega-shaped stator iron core and the I-shaped stator iron core are uniformly arranged in a staggered manner at intervals in the moving direction of the rotor and share the same armature winding; permanent magnets with opposite magnetic pole directions are embedded into two sides of the rotor core and fixed on a non-magnetic-conductive material rotor support; compared with the traditional permanent magnet linear motor, the motor integrates the omega-shaped stator core and the I-shaped stator core on the same armature winding, so that the space utilization rate of the motor is greatly improved; the motor circuit and the magnetic circuit are mutually independent, and the magnetic fields are distributed in a three-dimensional manner, so that the contradiction of mutual restriction of the tooth space size of the traditional permanent magnet motor is avoided, and the power density and the torque density of the motor are effectively improved.
Description
Technical Field
The invention relates to the field of permanent magnet motors, in particular to an omega-I type stator transverse flux permanent magnet linear motor.
Background
With the rapid consumption of traditional fossil fuels, the problem of environmental pollution is becoming more severe, so that the requirements of people on the efficiency of energy conversion and equipment and electromechanical systems are becoming more severe, and energy conservation and emission reduction become important issues of energy strategies of various countries. The motor plays an important role in national economy as an efficient electromechanical energy conversion device.
The stator tooth section and the armature winding slot section of the traditional permanent magnet motor are positioned on the same plane and are restricted with each other, so that the increase of the electric load and the increase of the magnetic load are mutually contradictory, and the power improvement is limited. The magnetic field of the motor forms a loop through the stator teeth, the larger the cross-sectional area of the stator teeth is, the smaller the equivalent magnetic resistance is, and the lower the hysteresis loss is, so that the magnetic load of the motor is improved. The increase of the tooth section under the premise of a certain motor volume necessarily sacrifices the slot area, and the reduction of the slot area leads to the reduction of the armature winding section and the turn number, so that the electric load of the motor is reduced.
However, for a transverse flux permanent magnet machine, the direction of rotation of the machine is perpendicular to the plane of the flux and is therefore referred to as "transverse flux". The stator iron core of the motor is formed by laminating silicon steel sheets, adjacent stator iron cores are spaced by a polar distance, adjacent permanent magnets on a rotor iron core are opposite in polarity, and an armature winding is embedded into a stator iron core groove. The transverse flux permanent magnet motor has the most outstanding characteristic that an armature winding and a main magnetic circuit are completely decoupled structurally, the major defect that the cross section of an inner iron core and the cross section of an armature of the traditional permanent magnet motor are mutually restricted is avoided ingeniously, the electric load and the magnetic load of the motor can be determined by independently adjusting the cross section area of a coil and the size of the magnetic circuit according to needs, and higher torque density and power density are obtained.
Compared with the traditional permanent magnet linear motor, the current direction is vertical to the motion direction, the plane of closed magnetic lines in a main magnetic circuit is parallel to the motion plane of the motor, the current direction of the omega-I type transverse flux permanent magnet linear motor is parallel to the motion direction, and the plane of the magnetic lines of the main magnetic circuit is vertical to the motion plane of the motor. The omega-I type transverse flux permanent magnet motor is complex in structure, an internal magnetic field is in complex three-dimensional distribution and is positioned on a different plane from a winding, the cross sectional area of the winding and the cross sectional area of stator teeth can be considered, decoupling on a circuit and a magnetic circuit is realized, and therefore the power density and the torque density of the motor are improved. The omega-I type stator structure is convenient for parameter adjustment, is beneficial to designing a multiphase fault-tolerant motor, and the motor with the new structure has wide application prospect in the occasions of high-torque-density direct-drive systems.
Disclosure of Invention
The invention aims to solve the technical problem of providing an omega-I type stator transverse flux permanent magnet linear motor aiming at the problem of complex motor structure in the background technology.
The invention adopts the following technical scheme for solving the technical problems:
an omega-I type stator transverse flux permanent magnet linear motor comprises an omega type stator iron core, an I type stator iron core, a rotor iron core, a permanent magnet, an armature winding and a non-magnetic-conductive material rotor support;
the rotor iron core and the permanent magnet are welded on a rotor support made of a non-magnetic permeability material, teeth on two sides of the same omega-shaped stator iron core and the same I-shaped stator iron core respectively correspond to the two rotor iron cores, the permanent magnet is embedded in the adjacent rotor iron core 3 on the same side, the magnetic poles of the permanent magnets on two sides of the rotor iron core are ensured to be different, and the magnetic poles of the corresponding permanent magnets on two sides of the same omega-shaped stator iron core and the same I-shaped stator iron core are also different;
when the linear motor operates in three phases, three identical single-phase structures need to be placed in parallel, and the stator and the rotor of each single-phase structure are staggered by 120 electrical degrees.
As a further preferable scheme of the omega-I type stator transverse flux permanent magnet linear motor, the omega type stator iron core and the I type stator iron core are laminated by silicon steel sheets, are arranged in a staggered manner at intervals in the front and back directions of the movement of the rotor and share the same armature winding;
as a further preferable scheme of the omega-I type stator transverse flux permanent magnet linear motor, permanent magnets with opposite magnetic pole directions are embedded in two sides of a rotor iron core and fixed on a rotor support made of non-magnetic materials;
as a further preferable scheme of the omega-I type stator transverse flux permanent magnet linear motor, ru iron boron is adopted as a material of the permanent magnet;
as a further preferred scheme of the omega-I type stator transverse flux permanent magnet linear motor, the non-magnetic-conductive material rotor support is made of steel;
as a further preferable scheme of the omega-I type stator transverse flux permanent magnet linear motor, each pair of omega-I type stator cores are separated by a pole pitch;
as a further preferable scheme of the omega-I type stator transverse flux permanent magnet linear motor, a plurality of pairs of omega-I type stator cores are integrated on the armature winding to improve the space utilization rate and power of the motor.
Compared with the prior art, the invention adopting the technical scheme has the following technical effects:
1. the magnetic flux density is enhanced by the magnetic gathering structure in which the rotor iron core and the permanent magnet of the omega-I type motor are alternately arranged, and the inherent end effect of the motor is avoided by the armature winding;
2. the omega-I type motor independently adjusts the cross section area and the magnetic circuit size of the windings, improves the torque density of the motor, and simultaneously decouples the windings at intervals, thus being easy to construct a multi-phase motor;
3. the stator/rotor iron core of the motor is made of silicon steel sheets which are easy to obtain and low in cost in a laminated mode, and is low in magnetic loss and high in economic benefit.
Drawings
FIG. 1 is an overall block diagram of the present invention;
FIG. 2 is a magnetic flux schematic of a pair of poles of the present invention;
FIG. 3 is an equivalent magnetic circuit diagram of the present invention;
fig. 4 is a substructure diagram of the present invention.
Description of the drawings: 1. an omega-shaped stator core; 2. an I-shaped stator core; 3. a mover core; 4. a permanent magnet; 5. an armature winding; 6. non-magnetic conductive material active cell support.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 4, an Ω -I type stator transverse flux permanent magnet linear motor includes an Ω type stator core, an I type stator core, a mover core, a permanent magnet, an armature winding, and a non-magnetic conductive material mover support;
the rotor iron core and the permanent magnet are welded on the rotor support made of the non-magnetic permeability material, teeth on two sides of the same omega-shaped stator iron core and the same I-shaped stator iron core correspond to the two rotor iron cores respectively, the permanent magnet is embedded in the adjacent rotor iron core 3 on the same side, the magnetic poles of the permanent magnets on two sides of the rotor iron core are guaranteed to be different, and the magnetic poles of the permanent magnets corresponding to two sides of the same omega-shaped stator iron core and the same I-shaped stator iron core are also different.
In the single-phase structure of the omega-I type stator transverse flux permanent magnet linear motor shown in fig. 1, three identical single-phase structures can form a three-phase motor, and meanwhile, in consideration of the particularity of an armature winding of the motor, when the motor operates in three phases, the three identical single-phase structures need to be arranged in parallel, and the stator and the rotor of each single-phase structure are staggered by 120 degrees;
a pair of magnetic circuits of the omega-I type stator transverse flux permanent magnet linear motor is shown in fig. 2: the magnetic flux passes through the permanent magnet → the rotor core → the air gap → the stator core of omega type → the air gap → the permanent magnet → the rotor core → the air gap → the stator core of I type → the air gap → the rotor core → the permanent magnet in sequence, and a closed magnetic path is formed. The equivalent magnetic circuit is shown in fig. 3, wherein the symbols are defined as follows: e-permanent magnet magnetic potential, rm-permanent magnet magnetic resistance, rs-one-pair omega-I stator core magnetic resistance, rr-rotor core magnetic resistance, rg-air gap magnetic resistance and phi-main magnetic flux.
The omega-shaped stator iron core and the I-shaped stator iron core are laminated by silicon steel sheets, are arranged in a staggered manner in the front and back directions of the movement of the rotor and share the same armature winding;
permanent magnets with opposite magnetic pole directions are embedded into two sides of the rotor core and fixed on a rotor support of a non-magnetic-conducting material;
the rotor iron core and the permanent magnet are alternately arranged to form a magnetic gathering structure rotor, and the magnetic flux of the stator iron core turn chain generates periodic change along with the motion of the rotor, so that electromotive force is generated in a winding;
the permanent magnet is made of Ru-Fe-B;
the non-magnetic material rotor support is made of steel;
and each pair of omega-I type stator cores is separated by a pole pitch.
And a plurality of pairs of omega-I type stator cores are integrated on the armature winding so as to improve the space utilization rate and power of the motor.
The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," "connecting," and "connecting" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be directly connected, and "upper," "lower," "left," and "right" are only used to indicate relative positional relationships, and when the absolute position of the object to be described is changed, the relative positional relationships may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;
and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. The utility model provides a omega-I type stator transverse flux permanent magnet linear electric motor which characterized in that: the permanent magnet motor comprises an omega-shaped stator core, an I-shaped stator core, a rotor core, a permanent magnet, an armature winding and a non-magnetic permeable material rotor support;
the rotor iron core and the permanent magnet are welded on a rotor support made of a non-magnetic permeability material, teeth on two sides of the same omega-shaped stator iron core and the same I-shaped stator iron core respectively correspond to the two rotor iron cores, the permanent magnet is embedded in the adjacent rotor iron core (3) on the same side, the magnetic poles of the permanent magnets on two sides of the rotor iron core are ensured to be different, and the magnetic poles of the permanent magnets corresponding to two sides of the same omega-shaped stator iron core and the same I-shaped stator iron core are also different;
when the linear motor operates in three phases, three identical single-phase structures are required to be placed in parallel, and the stator and the rotor of each single-phase structure are staggered by 120 electrical degrees.
2. The transverse flux permanent magnet linear motor with omega-I type stator as claimed in claim 1, wherein the omega type stator core and the I type stator core are laminated by silicon steel sheets, and are staggered in the front and back directions of the rotor motion, and share the same armature winding.
3. The omega-I type stator transverse flux permanent magnet linear motor according to claim 1, wherein permanent magnets with opposite magnetic pole directions are embedded in two sides of the rotor core and fixed on a rotor support made of non-magnetic materials.
4. The transverse flux permanent magnet linear motor with an omega-I type stator as claimed in claim 1, wherein the permanent magnet is made of Ru Fe B.
5. The transverse flux permanent magnet linear motor with the omega-I type stator as claimed in claim 1, wherein the non-magnetic material rotor support is made of steel.
6. The omega-I stator tfem of claim 1, wherein each pair of omega-I stator cores are separated by a pole pitch.
7. The omega-I stator transverse flux permanent magnet linear motor of claim 2, wherein a plurality of pairs of omega-I stator cores are integrated with the armature winding to improve space utilization and power of the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010849206.7A CN112087117B (en) | 2020-08-21 | 2020-08-21 | omega-I type stator transverse flux permanent magnet linear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010849206.7A CN112087117B (en) | 2020-08-21 | 2020-08-21 | omega-I type stator transverse flux permanent magnet linear motor |
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| Publication Number | Publication Date |
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| CN112087117A CN112087117A (en) | 2020-12-15 |
| CN112087117B true CN112087117B (en) | 2022-12-20 |
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| CN202010849206.7A Active CN112087117B (en) | 2020-08-21 | 2020-08-21 | omega-I type stator transverse flux permanent magnet linear motor |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009247180A (en) * | 2008-03-31 | 2009-10-22 | Univ Of Fukui | Traverse magnetic flux type synchronizer |
| CN104967270A (en) * | 2015-06-26 | 2015-10-07 | 南京航空航天大学 | Magnetism gathering passive rotor transverse magnetic flux single-phase motor |
| CN106877624A (en) * | 2017-03-29 | 2017-06-20 | 南京信息工程大学 | New pair of Ω type stator horizontal magnetic pass permanent magnetic line electromotor |
| CN206620042U (en) * | 2017-03-29 | 2017-11-07 | 南京信息工程大学 | New pair of Ω type stator horizontal magnetic pass permanent magnetic line electromotor |
| CN107786061A (en) * | 2016-08-24 | 2018-03-09 | 南京理工大学 | A kind of plate transverse flux linear motor |
-
2020
- 2020-08-21 CN CN202010849206.7A patent/CN112087117B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009247180A (en) * | 2008-03-31 | 2009-10-22 | Univ Of Fukui | Traverse magnetic flux type synchronizer |
| CN104967270A (en) * | 2015-06-26 | 2015-10-07 | 南京航空航天大学 | Magnetism gathering passive rotor transverse magnetic flux single-phase motor |
| CN107786061A (en) * | 2016-08-24 | 2018-03-09 | 南京理工大学 | A kind of plate transverse flux linear motor |
| CN106877624A (en) * | 2017-03-29 | 2017-06-20 | 南京信息工程大学 | New pair of Ω type stator horizontal magnetic pass permanent magnetic line electromotor |
| CN206620042U (en) * | 2017-03-29 | 2017-11-07 | 南京信息工程大学 | New pair of Ω type stator horizontal magnetic pass permanent magnetic line electromotor |
Non-Patent Citations (3)
| Title |
|---|
| 一种新型双C型定子横向磁通永磁发电机;贾周等;《中国电机工程学报》;20150605;第35卷(第11期);第2831-2837页 * |
| 圆筒型双Ω定子横向磁通永磁电机建模分析;余莉等;《现代电子技术》;20190303;第42卷(第5期);第100-103页 * |
| 横向磁通永磁电机设计与分析;孙延东等;《电机与控制应用》;20170110;第44卷(第01期);第45-50页 * |
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