CN110855034B - Mechanical magnetic-regulation permanent magnet like-pole type inductor motor - Google Patents
Mechanical magnetic-regulation permanent magnet like-pole type inductor motor Download PDFInfo
- Publication number
- CN110855034B CN110855034B CN201911138950.XA CN201911138950A CN110855034B CN 110855034 B CN110855034 B CN 110855034B CN 201911138950 A CN201911138950 A CN 201911138950A CN 110855034 B CN110855034 B CN 110855034B
- Authority
- CN
- China
- Prior art keywords
- magnetic
- permanent magnet
- conduction shell
- magnetic conduction
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- H02K1/17—Stator cores with permanent magnets
-
- 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
- H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/02—Casings or enclosures characterised by the material thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/12—Structural association with clutches, brakes, gears, pulleys or mechanical starters with auxiliary limited movement of stators, rotors or core parts, e.g. rotors axially movable for the purpose of clutching or braking
- H02K7/125—Structural association with clutches, brakes, gears, pulleys or mechanical starters with auxiliary limited movement of stators, rotors or core parts, e.g. rotors axially movable for the purpose of clutching or braking magnetically influenced
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The invention relates to a permanent magnet same-pole type inductor motor with mechanical magnetic regulation, which comprises: the stator comprises two sections of annular stator cores, armature windings are nested in inner rings of the two sections of annular stator cores, and rotors are wrapped inside the stator cores and the armature windings; the annular first section of magnetic conduction shell, the permanent magnet and the second section of magnetic conduction shell are arranged on the outer surface of the stator core and are connected in sequence; the first section of magnetic conduction shell, the permanent magnet and the second section of magnetic conduction shell form a magnetic conduction shell component; the outer surface of the magnetic conduction shell component is provided with a slidable circular ring-shaped magnetic adjusting ring.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a mechanical magnetic regulation permanent magnet homopolar inductor motor.
Background
The homopolar inductor motor adopts a solid rotor structure, has the characteristics of simple structure, high mechanical strength, high rotating speed, high energy storage density and the like, and has wide application prospect in the field of flywheel energy storage systems.
In flywheel energy storage systems, like pole induction machines typically employ electrical excitation to adjust the air gap field by adjusting the magnitude of the excitation current. Meanwhile, when the inductor motor is in a standby running state, the exciting current is cut off, so that the no-load electromagnetic loss of the motor caused by the exciting magnetic field is eliminated, and the self-loss rate of the motor is effectively reduced. However, when the homopolar inductor motor is in a charging and discharging operation state, excitation current needs to be introduced into the excitation winding to generate an excitation magnetic field, so that the motor generates large excitation copper consumption, and the operation efficiency of the motor is reduced. In order to restrain excitation copper loss, permanent magnet excitation can be adopted to replace electric excitation. However, due to the existence of the permanent magnetic field, the inductor motor has large no-load electromagnetic loss during standby operation, and the self-discharge rate of the motor is high.
Disclosure of Invention
Technical problem to be solved
In order to solve the above problems in the prior art, the present invention provides a mechanically modulated permanent magnet homopolar inductor motor.
(II) technical scheme
In order to achieve the above object, the present invention provides a mechanically modulated permanent magnet homopolar inductor motor, comprising:
the stator comprises two sections of annular stator cores (2), armature windings (6) are nested in inner rings of the two sections of annular stator cores (2), and rotors (1) are wrapped inside the stator cores (2) and the armature windings (6);
the stator comprises a circular first section of magnetic conduction shell (3), a permanent magnet (4) and a second section of magnetic conduction shell (3a) which are arranged on the outer surface of the stator core (2) and connected in sequence; the first section of magnetic conduction shell (3), the permanent magnet (4) and the second section of magnetic conduction shell (3a) form a magnetic conduction shell component;
the outer surface of the magnetic conduction shell component is provided with a slidable circular ring-shaped magnetic adjusting ring (5).
Preferably, the axial length of the magnetic adjusting ring (5) is greater than that of the permanent magnet (4).
Preferably, a plurality of pairs of salient poles with preset lengths are correspondingly arranged at two ends of the outer surface of the rotor (1);
preferably, the axes of the salient poles at the first end and the corresponding salient poles at the second end of the outer surface of the rotor (1) are different by 0 or pi electrical angle.
Preferably, the lengths of the two stator cores (2) are the same as the lengths of the salient poles, and the two stator cores (2) are respectively aligned with the salient poles at two ends of the rotor (1) in the axial direction.
Preferably, the permanent magnet (4) is magnetized in an axial direction.
Preferably, the material of the magnetic adjusting ring (5) is a magnetic conductive material.
Preferably, the rotor (1), the stator core (2), the first section of magnetic conduction shell (3), the second section of magnetic conduction shell (3a), the permanent magnet (4) and the magnetic adjusting ring (5) are all coaxially arranged.
(III) advantageous effects
The invention has the beneficial effects that: the invention adds the annular permanent magnet and the magnetic adjusting ring on the stator side, and the stator side has a simple structure.
The invention adopts a permanent magnet excitation form, and compared with an electric excitation homopolar inductor motor, the invention can eliminate excitation copper consumption during charging/discharging operation, thereby improving the operation efficiency of the motor.
Compared with the traditional permanent magnet motor, the permanent magnet motor adopts the arrangement of the magnetic adjusting ring, and the excitation magnetic circuit can be short-circuited through the magnetic adjusting ring during standby operation, so that the excitation magnetic field hardly passes through an air gap, the no-load electromagnetic loss of the motor is reduced, and the self-discharge loss is greatly reduced. In addition, the air gap magnetic field can be conveniently adjusted by adopting the magnetic adjusting ring structure.
Drawings
Fig. 1 is a schematic three-dimensional structure diagram of a mechanically modulated permanent magnet homopolar inductor motor according to an embodiment of the present invention;
fig. 2 is a half sectional view of a mechanically modulated permanent magnet homopolar inductor motor in an embodiment of the present invention;
fig. 3 is a schematic magnetic circuit diagram of a mechanically-modulated permanent magnet homopolar inductor motor in an embodiment of the invention, in which a magnetic modulation ring is not short-circuited in an excitation loop;
fig. 4 is a schematic magnetic circuit diagram of a mechanically-modulated permanent magnet homopolar inductor motor in an embodiment of the invention, in which a magnetic modulation loop is short-circuited with an excitation loop.
[ description of reference ]
1: a rotor;
2: a stator core;
3: a first section of magnetically conductive housing;
3 a: a second section of magnetically conductive housing;
4: a permanent magnet;
5: adjusting a magnetic ring;
6: an armature winding;
7: an excitation magnetic circuit a;
8: the magnetic circuit b is excited.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.
In this embodiment, referring to fig. 1, a mechanically-modulated permanent magnet homopolar inductor motor is characterized by including: the stator comprises two sections of annular stator cores 2, armature windings 6 are nested in inner rings of the two sections of annular stator cores 2, and rotors 1 are wrapped inside the stator cores 2 and the armature windings 6.
The stator core is provided with a circular first section of magnetic conduction shell 3, a permanent magnet 4 and a second section of magnetic conduction shell 3a which are arranged on the outer surface of the stator core 2 and connected in sequence; the first section of magnetic conduction shell 3, the permanent magnet 4 and the second section of magnetic conduction shell 3a form a magnetic conduction shell component.
In this embodiment, the outer surface of the magnetic conduction housing assembly is slidably provided with a circular magnetic ring 5.
In this embodiment, the axial length of the magnetic adjusting ring 5 is greater than the axial length of the permanent magnet 4.
In the embodiment, two ends of the outer surface of the rotor 1 are correspondingly provided with a plurality of pairs of salient poles with preset lengths;
in the embodiment, the axis between the salient pole at the first end of the outer surface of the rotor 1 and the corresponding salient pole at the second end is different by 0 or pi electrical angle.
In this embodiment, the lengths of the two stator cores 2 are the same as the lengths of the salient poles, and the two stator cores 2 are respectively aligned with the salient poles at the two ends of the rotor 1 in the axial direction.
In the present embodiment, the armature winding 6 is spaced from the rotor 1 by a predetermined distance.
The permanent magnet 4 in this embodiment is magnetized in an axial direction.
In this embodiment, the material of the magnetic adjusting ring 5 is a magnetic conductive material.
In this embodiment, the rotor 1, the stator core 2, the first section of the magnetic conductive housing 3, the second section of the magnetic conductive housing 3a, the permanent magnet 4 and the magnetic adjustment ring 5 are all coaxially disposed.
In this embodiment, the air gap magnetic field can be adjusted by adjusting the relative position between the magnetic adjusting ring 5 and the permanent magnet 4. The high efficiency of the induction sub-motor in the flywheel energy storage system in the energy storage/release working state and the operation with almost no standby electromagnetic loss in the standby state are realized, so that the operation efficiency of the whole motor system is improved.
In this embodiment, when the magnetic adjusting ring is attached to the magnetic conductive housing, as shown in fig. 3, the magnetic circuit of the permanent magnet 4 generating the magnetic field is as curve 7. The air gap flux densities of the left section and the right section of the stator core 2 are opposite unipolar magnetic fields. The resulting airgap magnetic field is fourier decomposed into a dc component, a fundamental component, and a series of harmonic components. The pole pair number p of the fundamental component in the air gap is equal to the corresponding number of rotor teeth Z. In the present embodiment, when the number of salient poles of the left and right rotor segments is 4, a fundamental wave magnetic field having a pole pair number of 4 is formed in the corresponding air gap.
In this embodiment, when the axial middle position of the magnetic flux adjusting ring 5 coincides with the axial middle position of the permanent magnet 4, the curves of the excitation magnetic paths of the magnetic field generated by the permanent magnet 4 are 7 and 8. Because the permanent magnetic field is short-circuited by the magnetic adjusting block, the magnetic field passing through the air gap is almost 0, so that the standby electromagnetic loss of the permanent magnetic excitation inductor motor during no-load operation can be greatly eliminated, and the operation efficiency of the whole system is improved.
The technical principles of the present invention have been described above in connection with specific embodiments, which are intended to explain the principles of the present invention and should not be construed as limiting the scope of the present invention in any way. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive efforts, which shall fall within the scope of the present invention.
Claims (7)
1. A mechanically modulated permanent magnet like pole inductor motor, comprising: the stator comprises two sections of annular stator cores (2), armature windings (6) are nested in inner rings of the two sections of annular stator cores (2), and rotors (1) are wrapped inside the stator cores (2) and the armature windings (6);
the stator comprises a circular first section of magnetic conduction shell (3), a permanent magnet (4) and a second section of magnetic conduction shell (3a) which are arranged on the outer surface of the stator core (2) and connected in sequence; the first section of magnetic conduction shell (3), the permanent magnet (4) and the second section of magnetic conduction shell (3a) form a magnetic conduction shell component;
the outer surface of the magnetic conduction shell component is provided with a slidable annular magnetic adjusting ring (5);
the material of the magnetic adjusting ring (5) is magnetic conductive material.
2. The electrical machine according to claim 1, characterized in that the axial length of the dimming ring (5) is greater than the axial length of the permanent magnet (4).
3. The machine according to claim 1, characterized in that the rotor (1) is provided with pairs of salient poles of a predetermined length at both ends of its outer surface, respectively.
4. A machine as claimed in claim 3, characterized in that the rotor (1) has an outer surface with axes between salient poles at a first end and corresponding salient poles at a second end differing by 0 or pi electrical degrees.
5. The machine according to claim 4, characterized in that the lengths of the two stator core segments (2) are both the same as the lengths of the salient poles, and the two stator core segments (2) are axially aligned with the salient poles at both ends of the rotor (1), respectively.
6. The machine according to claim 1, characterized in that the permanent magnets (4) are magnetized in the axial direction.
7. The electric machine according to claim 1, characterized in that the rotor (1), the stator core (2), the first magnetically conductive housing (3), the second magnetically conductive housing (3a), the permanent magnet (4) and the magnetic modulating ring (5) are all coaxially arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911138950.XA CN110855034B (en) | 2019-11-20 | 2019-11-20 | Mechanical magnetic-regulation permanent magnet like-pole type inductor motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911138950.XA CN110855034B (en) | 2019-11-20 | 2019-11-20 | Mechanical magnetic-regulation permanent magnet like-pole type inductor motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110855034A CN110855034A (en) | 2020-02-28 |
| CN110855034B true CN110855034B (en) | 2020-12-01 |
Family
ID=69602746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911138950.XA Active CN110855034B (en) | 2019-11-20 | 2019-11-20 | Mechanical magnetic-regulation permanent magnet like-pole type inductor motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110855034B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114268177A (en) * | 2021-12-23 | 2022-04-01 | 江苏辛艾络科技研发有限公司 | Transverse magnetic field doubly salient permanent magnet motor |
| CN117650648B (en) * | 2024-01-30 | 2024-05-07 | 江西红声技术有限公司 | Reluctance motor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5455473A (en) * | 1992-05-11 | 1995-10-03 | Electric Power Research Institute, Inc. | Field weakening for a doubly salient motor with stator permanent magnets |
| CN101699713B (en) * | 2009-10-28 | 2011-08-10 | 南京航空航天大学 | Rotor sectional type flux switching motor and method for improving sine degree of back electromotive force thereof |
| CN102035270B (en) * | 2010-12-17 | 2012-11-14 | 南京航空航天大学 | Axial excitation double salient pole motors |
| DE112012006225T5 (en) * | 2012-04-10 | 2015-01-15 | Mitsubishi Electric Corporation | electric motor |
| CN109217550A (en) * | 2017-06-29 | 2019-01-15 | 维多利亚联结有限公司 | Flywheel energy storage system |
| CN108063532A (en) * | 2017-11-30 | 2018-05-22 | 南京工业大学 | Double-stator structure two-phase doubly salient permanent magnet motor |
-
2019
- 2019-11-20 CN CN201911138950.XA patent/CN110855034B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110855034A (en) | 2020-02-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108964396B (en) | Stator partition type alternate pole hybrid excitation motor | |
| CN106981966B (en) | A kind of permanent magnet bias bearing-free switch magnetic-resistance starting/generator | |
| KR102078684B1 (en) | Mechanical drive to the motor and alternator | |
| CN110707841B (en) | Magnetism-gathering type double-salient-pole hybrid permanent magnet memory motor | |
| CN111049288A (en) | Surrounding type winding magnetic flux modulation stator structure | |
| CN111181262B (en) | Stator structure using built-in magnetic flux modulation ring of winding | |
| CN113437849B (en) | Double-rotor single-stator axial magnetic flux hybrid excitation motor | |
| CN110855034B (en) | Mechanical magnetic-regulation permanent magnet like-pole type inductor motor | |
| CN110601482A (en) | Axial magnetic field flywheel pulse synchronous generator system | |
| CN105515314A (en) | Hybrid excitation magnetic linkage parallel double-rotor combined motor | |
| CN113067446A (en) | Double-modularization hybrid excitation flux switching motor | |
| CN111786527A (en) | Excitation compensation type hybrid magnetic source magnetic field modulation motor | |
| CN105141104B (en) | A kind of yoke portion Exciting Windings for Transverse Differential Protection high power density composite excitation permanent magnet linear electric generator | |
| CN111953161B (en) | Double-winding axial magnetic field multiphase flywheel pulse generator system | |
| US9831753B2 (en) | Switched reluctance permanent magnet motor | |
| CN205081587U (en) | Excitation winding high power density mixed excitation permanent magnet linear generator of yoke portion | |
| Tarımer et al. | Performance comparision of internal and external rotor structured wind generators mounted from same permanent magnets on same geometry | |
| CN111224477A (en) | Parallel structure brushless mixed excitation synchronous generator based on harmonic winding excitation | |
| CN203151346U (en) | Rare-earth permanent magnet generator | |
| CN112491231B (en) | Hybrid excitation salient pole block rotor switch flux motor | |
| CN112910131B (en) | Rotor magnetic pole modulation type bypass type mixed excitation motor | |
| CN105915007B (en) | A kind of reluctance type disc type electric machine | |
| CN115224903A (en) | Mixed excitation type bearingless switched reluctance motor | |
| CN111953163B (en) | Multiphase permanent magnet synchronous motor system and magnetic field adjusting method thereof | |
| Tarimer et al. | Performance Comparision of Internal and External Rotor Structured Wind Generators Mounted from Same Permanent Magnets on Same Geometry. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |