CN115459473A - Short magnetic circuit switch reluctance motor - Google Patents
Short magnetic circuit switch reluctance motor Download PDFInfo
- Publication number
- CN115459473A CN115459473A CN202211091209.4A CN202211091209A CN115459473A CN 115459473 A CN115459473 A CN 115459473A CN 202211091209 A CN202211091209 A CN 202211091209A CN 115459473 A CN115459473 A CN 115459473A
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- Prior art keywords
- stator
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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
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
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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
- H02K1/17—Stator cores with permanent magnets
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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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/18—Windings for salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Synchronous Machinery (AREA)
Abstract
The invention belongs to the technical field of electromechanics, and discloses a short magnetic circuit switched reluctance motor which comprises a shell, a stator and a rotor, wherein the stator and the rotor are positioned in the shell; the number of the stator magnetic poles of the stator is three times that of the magnetic conduction poles of the rotor, the polarities of two adjacent stator magnetic poles are opposite, and each stator magnetic pole is an independent winding; each magnetic conduction pole corresponds to two stator magnetic poles which are pure direct current power supplies; the number of the magnetic poles of the rotor is 2N, wherein N is greater than or equal to 1, and the magnetic poles are uniformly distributed on the rotor; every adjacent three stator magnetic poles are set into a group and are sequentially set into three phases, coils of each group of stator magnetic poles are connected in series or in parallel according to the phase sequence of the three phases, the three phases at one end are electrically connected with the positive pole of a power supply after being electrically connected with the three linked intelligent control switches, and the three phases at the other end are electrically connected with the negative pole of the power supply after being connected in parallel. The invention has the advantages of shortest winding end, shortest magnetic circuit, simple structure, high power density, high efficiency and low production cost.
Description
Technical Field
The invention belongs to the technical field of electromechanics, and particularly relates to a short-magnetic-circuit switched reluctance motor which is simple in structure, high in power density and low in production cost.
Background
The prior art switched reluctance motor includes a housing, a stator located on an inner wall of the housing, and a rotor located in an inner cavity of the stator. The switched reluctance motor with the structure has the advantages of only 1/3 or less stator magnetic pole output, low power density,
the magnetic pole of the rotor of the existing permanent magnet motor is made of permanent magnet materials, the permanent magnet materials need to be made of rare earth, and the mining and smelting cost of the permanent magnet materials is high. The permanent magnet of the permanent magnet motor is easy to demagnetize, the rated temperature is generally designed to be 50 ℃, the permanent magnet is particularly afraid of high temperature, and the existing permanent magnet is demagnetized at 150 ℃.
The switched reluctance motor has low power density, large torque pulsation and complex control.
In summary, the conventional switched reluctance motor has low power density, large torque ripple and complex control.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the short magnetic circuit switched reluctance motor which is simple in structure, high in power density and low in production cost.
In order to solve the technical problems, the invention adopts the following technical scheme:
a short magnetic circuit switch reluctance motor comprises a shell, a stator and a rotor, wherein the stator and the rotor are positioned in the shell; wherein: the number of the stator magnetic poles of the stator is three times that of the magnetic conduction poles of the rotor, the polarities of two adjacent stator magnetic poles are opposite, and each stator magnetic pole is an independent winding;
each magnetic conduction pole corresponds to two stator magnetic poles, and the stator magnetic poles are pure direct current power supplies;
the number of the magnetic poles of the rotor is 2N, wherein N is greater than or equal to 1, and the magnetic poles are uniformly distributed on the rotor;
every adjacent three stator magnetic poles are set into a group and are sequentially set into three phases, coils of each group of stator magnetic poles are connected in series or in parallel according to the phase sequence of the three phases, the three phases at one end are electrically connected with the positive pole of a power supply after being electrically connected with the three linked intelligent control switches, and the three phases at the other end are electrically connected with the negative pole of the power supply after being connected in parallel.
Due to the structure, the adjacent two stator magnetic poles have opposite polarities, so that the magnetic circuit is shortest and the magnetic leakage is least; each stator magnetic pole is an independent winding, so the winding end is shortest, and the efficiency is improved. 2/3 of magnetic poles are applied with force at any working moment, so that the power density is almost 2 times of that of the existing switched reluctance motor. And has simple structure, high power density, high efficiency and low production cost.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a schematic structural diagram of the inner rotor motor according to the structural embodiment of the present invention at the position of the stator and the rotor;
fig. 4 is a schematic structural diagram of a stator and a rotor in the external rotor motor structural embodiment of the present invention;
fig. 5 is a schematic structural diagram of a stator and a rotor in an embodiment of the inner and outer double-stator motor structure of the present invention.
Detailed Description
In order that those skilled in the art can better understand the present invention, the following technical solutions are further described in conjunction with the accompanying drawings and examples:
referring to fig. 1 to 5, a short magnetic circuit switched reluctance motor includes a housing 1, a stator 2 and a rotor 3 in the housing 1; the method is characterized in that: the number of the stator magnetic poles 201 of the stator 2 is three times that of the magnetic poles 301 of the rotor 3, the polarities of the two adjacent stator magnetic poles 201 are opposite, and each stator magnetic pole 201 is an independent winding;
each magnetic conductive pole 301 corresponds to two stator magnetic poles 201, and the stator magnetic poles 201 are pure direct current power supplies;
the number of the magnetic poles 301 of the rotor 3 is 2N, wherein N is greater than or equal to 1, and the magnetic poles 301 are uniformly distributed on the rotor 3;
every three adjacent stator magnetic poles 201 are set as a group and are sequentially set as three phases, coils of each group of stator magnetic poles 201 are connected in series or in parallel according to the phase sequence of the three phases, wherein the three phases at one end are electrically connected with the positive pole of the power supply after being electrically connected with the three linked intelligent control switches 5, and the three phases at the other end are electrically connected with the negative pole of the power supply after being connected in parallel. In this embodiment, the adjacent two stator poles 201 of the stator 2 have opposite polarities, so the magnetic path is shortest, the leakage flux is least, and the efficiency is improved. 2/3 of the magnetic poles work under the action of force at any working moment, so that the power density is almost 2 times that of the conventional switched reluctance motor. Simple structure, easy manufacture and low production cost.
In the above embodiment, referring to fig. 2, the three adjacent stator poles 201 denoted by A1, B1, C1 are a first group, the three adjacent stator poles 201 denoted by A2, B2, C2 are a second group, and the three adjacent stator poles 201 denoted by A3, B3, C3 are a third group; the three adjacent stator poles 201 indicated by A4, B4, and C4 are in the fourth group, the three adjacent stator poles 201 indicated by A5, B6, and C5 are in the fifth group, and the three adjacent stator poles 201 indicated by A6, B6, and C6 are in the sixth group. Wherein A1 is connected with A2 to A6 in series or in parallel, B1 is connected with B2 to B6 in series or in parallel, and C1 is connected with C2 to C6 in series or in parallel.
In order to ensure the sealing performance and prolong the service life of the whole switched reluctance motor, in the above embodiment, preferably: the shell 1 is provided with mounting lugs 6, and an end cover 7 of the rotor 3 is fixed on the mounting lugs 6 through bolts.
For ease of installation, in the above embodiment, preferably: and a motor mounting seat 4 is arranged on the shell 1.
Referring to fig. 5, in the above embodiment, preferably: the number of the stators 2 is two, and the stator poles 201 between the two stators 2 are arranged in a staggered manner. In this embodiment, at the instant when the stator poles 201 of one stator 2 are commutating, i.e. the switched reluctance motor loses driving force, the stator poles 201 of the other stator 2 are generating torque, so the torque ripple is small and the output power is smoother.
The switched reluctance motor can be made into an inner rotor motor, an outer rotor motor, a disc type motor or an inner and outer double-layer stator motor, a left and right double-stator motor and a disc type left and right double-stator motor. Referring to fig. 5, when the disc-type left and right double-stator motor is configured as the inner and outer double-layer stator motor, the left and right double-stator motor, and the disc-type left and right double-stator motor, the stator poles 201 between the two stators 2 need to be arranged in a staggered manner. In this embodiment, the coils of the respective sets of stator poles 201 on the two stators are connected in series or in parallel, respectively, in the phase sequence of the three phases.
In the above embodiment, referring to fig. 2, the control operation process is as follows: when the KAKB is turned on, under the pulling of the magnetic force, the magnetic conductive pole 301 is aligned with the two corresponding stator poles, specifically, the magnetic conductive pole D1 is aligned with the stator pole A1 and the stator pole B1, the magnetic conductive pole D2 is aligned with the stator pole A2 and the stator pole B2, the magnetic conductive pole D3 is aligned with the stator pole A3 and the stator pole B3, the magnetic conductive pole D4 is aligned with the stator pole A4 and the stator pole B4, the magnetic conductive pole D5 is aligned with the stator pole A5 and the stator pole B5, and the magnetic conductive pole D6 is aligned with the stator pole A6 and the stator pole B6.
Clockwise, (1) when KA is disconnected, KBKC is closed, and under the magnetic force pulling, the magnetic conduction pole D1 is aligned with the stator magnetic pole B1C 1. The rotor is now rotated clockwise through the angle of one stator pole. (2) Next, KB is opened and KCKA is closed, magnetically pulling, magnetically permeable pole D1 to align with stator pole C1 A2. The rotor is now rotated clockwise through an angle of one stator pole again. (3) Next, KC is opened, KAKB is closed, and magnetically permeable pole D1 is aligned with stator pole A2B2 as pulled by the magnetic force. The rotor is now rotated clockwise through an angle of one stator pole again. The switch K rotates in this cycle, and the rotor rotates clockwise.
Reverse, (1) when KB is open, KAKC is closed, and magnetically pulled, magnetically permeable pole D1 is aligned with stator pole A1C 6. The rotor is now rotated counterclockwise through the angle of one stator pole. (2) Next, KA is opened and KCKB is closed, and magnetically pulled, the magnetically permeable pole D1 is aligned with the stator pole C6B 6. The rotor is now rotated clockwise through an angle of one stator pole again. (3) Next, KC is opened and KBKA is closed, and magnetically pulled, magnetically permeable pole D1 is aligned with stator pole A6B 6. The rotor is now rotated clockwise through an angle of one stator pole again. The switch K cycles in this sequence and the rotor rotates in a counterclockwise direction. This scheme but switched reluctance motor wide application is: the electric vehicle and the compressor can better adapt to the severe change of torque and the frequent start and stop of the compressor because of the wide constant power rotating speed range, and the washing machine has high efficiency because of the wide rotating speed range, the low speed of 30-40 revolutions is stable in washing, the torque is large, and the rotating speed is about 1000 revolutions during dehydration. The motor of the invention has the advantages of high power density, simple structure, firmness, durability and low production cost. The motor can normally work at-30 to 90 ℃.
All the components are commercially available products, the description about the program control is not the point of the invention to be protected, and the description about the program control is convenient for a person skilled in the art to understand the technical scheme of the invention.
The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art at the filing date or prior to the priority date of the application, so that those skilled in the art can now appreciate that all of the above-described techniques in this field and have the ability to apply routine experimentation before this date can be combined with one or more of the present teachings to complete and implement the present invention, and that certain typical known structures or known methods do not pose any impediments to the implementation of the present invention by those skilled in the art. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.
Claims (4)
1. A short magnetic circuit switch reluctance motor comprises a shell (1), a stator (2) and a rotor (3) which are positioned in the shell (1); the method is characterized in that: the number of the stator magnetic poles (201) of the stator (2) is three times that of the magnetic poles (301) of the rotor (3), the polarities of two adjacent stator magnetic poles (201) are opposite, and each stator magnetic pole (201) is an independent winding;
each magnetic conductive pole (301) corresponds to two stator magnetic poles (201), and the stator magnetic poles (201) are pure direct current power supplies;
the number of the magnetic poles (301) of the rotor (3) is 2N, wherein N is greater than or equal to 1, and the magnetic poles (301) are uniformly distributed on the rotor (3);
every three adjacent stator magnetic poles (201) are set into a group and are sequentially set into three phases, coils of each group of stator magnetic poles (201) are connected in series or in parallel according to the phase sequence of the three phases, wherein the three phases at one end are electrically connected with the positive pole of a power supply after being electrically connected with the three linked intelligent control switches (5), and the three phases at the other end are electrically connected with the negative pole of the power supply after being connected in parallel.
2. The short magnetic circuit switched reluctance motor of claim 1, wherein: the rotor is characterized in that the shell (1) is provided with a mounting lug (6), and an end cover (7) of the rotor (3) is fixed on the mounting lug (6) through a bolt.
3. A short magnetic circuit switched reluctance machine according to claim 1 or 2, wherein: and a motor mounting bracket (4) is arranged on the shell (1).
4. A short magnetic circuit switched reluctance machine according to claim 1, wherein: the number of the stators (2) is two, and the stator magnetic poles (201) between the two stators (2) are arranged in a staggered mode.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211091209.4A CN115459473A (en) | 2022-09-07 | 2022-09-07 | Short magnetic circuit switch reluctance motor |
| PCT/CN2022/120332 WO2024050876A1 (en) | 2022-09-07 | 2022-09-21 | Short magnetic circuit switched reluctance motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211091209.4A CN115459473A (en) | 2022-09-07 | 2022-09-07 | Short magnetic circuit switch reluctance motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115459473A true CN115459473A (en) | 2022-12-09 |
Family
ID=84302377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211091209.4A Pending CN115459473A (en) | 2022-09-07 | 2022-09-07 | Short magnetic circuit switch reluctance motor |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115459473A (en) |
| WO (1) | WO2024050876A1 (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4942345A (en) * | 1989-02-14 | 1990-07-17 | Emerson Electric Co. | Pole changing switched reluctance motor and method |
| US5111095A (en) * | 1990-11-28 | 1992-05-05 | Magna Physics Corporation | Polyphase switched reluctance motor |
| US6028385A (en) * | 1995-10-19 | 2000-02-22 | Tridelta Industries, Inc. | Switched reluctance motor |
| CN101707428B (en) * | 2009-11-06 | 2013-01-30 | 张世清 | Three-phase single-section/double-section multiple-pole switching reluctance motor |
| JP6060296B1 (en) * | 2016-04-19 | 2017-01-11 | Ｋａｉｓｅｉモータ株式会社 | Switched reluctance motor device with constant current control |
| CN106655916B (en) * | 2016-12-20 | 2018-11-06 | 合肥工业大学 | A kind of control circuit of switched reluctance machines |
| CN110048660B (en) * | 2019-04-08 | 2020-12-04 | 中国计量大学 | Switch reluctance motor comprehensive power converter system |
-
2022
- 2022-09-07 CN CN202211091209.4A patent/CN115459473A/en active Pending
- 2022-09-21 WO PCT/CN2022/120332 patent/WO2024050876A1/en unknown
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| Publication number | Publication date |
|---|---|
| WO2024050876A1 (en) | 2024-03-14 |
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