CN110112878A - A kind of extremely tangential excitation vernier magneto of alternating - Google Patents
A kind of extremely tangential excitation vernier magneto of alternating Download PDFInfo
- Publication number
- CN110112878A CN110112878A CN201910331460.5A CN201910331460A CN110112878A CN 110112878 A CN110112878 A CN 110112878A CN 201910331460 A CN201910331460 A CN 201910331460A CN 110112878 A CN110112878 A CN 110112878A
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- China
- Prior art keywords
- stator
- rotor
- tooth
- permanent magnet
- extremely
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- 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.)
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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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2746—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets arranged with the same polarity, e.g. consequent pole type
-
- 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
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/02—Details
- H02K21/021—Means for mechanical adjustment of the excitation flux
- H02K21/028—Means for mechanical adjustment of the excitation flux by modifying the magnetic circuit within the field or the armature, e.g. by using shunts, by adjusting the magnets position, by vectorial combination of field or armature sections
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Synchronous Machinery (AREA)
Abstract
The invention discloses a kind of extremely tangential excitation vernier magnetoes of alternating, comprising: stator core, winding, permanent magnet and rotor core；The winding is placed in the stator slot of the stator core；The rotor core includes rotor yoke and multiple along the equally distributed rotor tooth of rotor yoke external peripheral surface；The rotor tooth is in H type, including the main tooth of rotor and connecting bridge, and the connecting bridge is towards identical；The permanent magnet circumferentially tangential excitation, and polarity is identical, is inserted into the rotor tooth.The permanent magnet of identical polar is connected by the present invention by using H type rotor tooth, and the main magnetic circuit for keeping number of poles less passes through rotor yoke and connecting bridge, to weaken magnetic barrier effect, reduces air-gap reluctance, promotes few pole field flux density, improve the back-emf and torque density of motor；Permanent magnet dosage can be greatly decreased using alternately pole magnet structure in the present invention, reduce motor cost, and motor volume is smaller in the case where equal-wattage output, and weight is lighter.
Description
Technical field
The invention belongs to magneto technical fields, more particularly, to a kind of extremely tangential excitation vernier Permanent Magnet and Electric of alternating
Machine.
Background technique
Magneto is obtained increasingly with its simple structure and superior performance such as high power density, high torque density
More applications, achieves significant progress.Vernier magneto receives more and more attention in recent years, such motor is based on magnetic
Field mudulation effect has the advantages such as power density is high, torque density is high, structure is simple, suitable low-speed high-torque direct driving formula operation
Occasion.
Vernier magneto is similar to common magneto in structure, all has stator, rotor, permanent magnet and stator electricity
Pivot winding, however vernier permanent magnet motor stator slot is open slot, and stator and rotor number of pole-pairs is unequal.It is stable defeated in order to generate
Torque out, stator tooth play the role of pole change device, and the excitation field that permanent magnet generates exists by the modulating action of stator tooth
Two main operating fields are generated in air gap, their number of pole-pairs is respectively PaAnd Pr, the former and stator armature winding number of pole-pairs
It is equal, it is rotor number of pole-pairs and number of stator slots and/or absolute value of the difference, the latter is equal with rotor number of pole-pairs.Therefore vernier Permanent Magnet and Electric
Machine works flux density one more than common magneto, this makes vernier magneto have higher torque density.
In order to improve air gap flux density, the permanent magnet of circumferentially tangential excitation, this permanent magnetism is can be used in the permanent magnet on rotor
The poly- magnetic effect of body structure is good, and has reluctance torque, can further promote torque density.Traditional tangential excitation vernier Permanent Magnet and Electric
Machine structural schematic diagram runs through entire rotor core as shown in Figure 1, the permanent magnet of tangential excitation is inserted vertically into rotor, and adjacent two
Permanent magnet excitation is contrary.The electric machine structure main magnetic circuit schematic diagram is as shown in Fig. 2, it can be seen from the figure that vernier Permanent Magnet and Electric
The lesser magnetic flux path of number of pole-pairs is longer in two groundwork magnetic fields of machine, in the permanent magnet Jing Guo reversed excitation,
It is forced into air gap, multiple protrusions is formed, magnetic circuit reluctance is caused to increase, flux density reduces, and reduces back-emf and torque, this existing
As being referred to as " magnetic barrier effect ".Therefore, the p-m rotor of tangential excitation is used directly in effect in vernier magneto poor, meeting
Cause vernier magneto torque advantage that can not embody.
Summary of the invention
In view of the drawbacks of the prior art, the purpose of the present invention is to provide a kind of extremely tangential excitation vernier Permanent Magnet and Electrics of alternating
Machine, it is intended to which solving the problem of existing tangential excitation vernier magneto, there are magnetic barrier effects, and torque density to be caused to reduce.
To achieve the above object, the present invention provides a kind of extremely tangential excitation vernier magnetoes of alternating, comprising: stator iron
The heart, winding, permanent magnet and rotor core；
The winding is placed in the stator slot of the stator core；
The rotor core includes rotor yoke and multiple along the equally distributed rotor of rotor yoke external peripheral surface
Tooth；The rotor tooth is in H type, including the main tooth of rotor and connecting bridge, and the connecting bridge is towards identical；
The permanent magnet circumferentially tangential excitation, and polarity is identical, is inserted into the rotor tooth.
Further, the stator core include along the equally distributed stator slot of inside circumference and be located at adjacent stator slots it
Between stator tooth.
Further, the quantity Z of the rotor toothr, the stator slot quantity ZsWith the winding number of pole-pairs PaMeet such as
Lower relationship:
Wherein, GCD () indicates minimum common divisor.
Further, the stator core can also be division toothing, including stator yoke and multiple stator tooths, Mei Geding
Sub- tooth includes the main tooth of a stator and multiple assist tooths, and the bottom of the main tooth of stator is connected with the stator yoke, Mei Gesuo
The bottom for stating assist tooth is connected with the top of the main tooth of the stator.
Further, spacing and angle can be the same or different between each assist tooth in the stator tooth.
Further, the winding is centralization or distributed three-phase windings.
Further, the stator core and the rotor core are formed by silicon steel sheet laminated.
Further, the permanent magnet can be Ru-Fe-Mn, SmCo or the ferrite of cutting orientation magnetizing, and excitation direction can be with
Rotor tooth towards identical or opposite.
Contemplated above technical scheme through the invention, compared with prior art, can obtain it is following the utility model has the advantages that
(1) the extremely tangential excitation vernier magneto of alternating provided by the invention, by using H type rotor tooth by identical polar
Permanent magnet be connected, the main magnetic circuit for keeping number of poles less pass through rotor yoke and connecting bridge, thus weaken magnetic barrier effect, reduce air gap
Magnetic resistance promotes few pole field flux density, improves the back-emf and torque density of motor.
(2) permanent magnet dosage can be greatly decreased using alternately pole magnet structure in the present invention, reduce motor cost, and mention
High torque and permanent magnet volume ratio, motor volume is smaller in the case where equal-wattage output, and weight is lighter.
(3) present invention uses interior permanent magnet machine structure, has reluctance torque, can use torque capacity-electric current
Have compared to control mode of the d shaft current for zero is used than control method and reduce d shaft voltage, improves vernier magneto power
The advantage of factor.
Detailed description of the invention
Fig. 1 is traditional tangential excitation vernier permanent magnet motor structure schematic diagram；
Fig. 2 is traditional tangential excitation vernier magneto main magnetic circuit schematic diagram；
Fig. 3 is the extremely tangential excitation vernier permanent magnet motor structure schematic diagram of alternating provided in an embodiment of the present invention；
Fig. 4 is the extremely tangential excitation vernier magneto main magnetic circuit schematic diagram of alternating provided in an embodiment of the present invention；
Fig. 5 is division tooth stator structure schematic diagram；
Wherein: 1 is stator core, and 11 be stator yoke, and 12 be the main tooth of stator, and 13 be stator assist tooth, and 2 be winding, and 3 are
Permanent magnet, 4 be rotor core, and 41 be the main tooth of rotor, and 42 be connecting bridge, and 43 be rotor yoke.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in figure 3, a kind of extremely tangential excitation vernier magneto of alternating provided in an embodiment of the present invention, comprising: stator
Iron core 1, winding 2, permanent magnet 3 and rotor core 4；
The stator core 1 includes along the equally distributed stator slot of inside circumference and the stator between adjacent stator slots
Tooth；
The winding 2 is centralization or distributed three-phase windings, is placed in the stator slot of the stator core 1；
The rotor core 4 includes rotor yoke 43 and multiple along equally distributed turn of the rotor yoke external peripheral surface
Sub- tooth；The rotor tooth is in H type, including the main tooth 41 of rotor and connecting bridge 42, and the connecting bridge 42 is towards identical, in the present embodiment
Connecting bridge is oriented counterclockwise, but the present invention is not limited thereto, connecting bridge direction or clockwise direction.
The permanent magnet 3 circumferentially tangential excitation, and polarity is identical, permanent magnet excitation direction is the inverse time in the present embodiment
Needle, but the present invention is not limited thereto, and 3 excitation direction of permanent magnet may be clockwise that permanent magnet 3 is inserted into the rotor tooth,
It permanent magnet excitation direction can be with rotor tooth towards identical or opposite.
The stator core and the rotor core are formed by silicon steel sheet laminated.
The permanent magnet can be Ru-Fe-Mn, SmCo or the ferrite of cutting orientation magnetizing.
The quantity Z of the rotor toothr, the stator slot quantity ZsWith the winding number of pole-pairs PaThere are a variety of possibilities,
Following relationship need to be met:
Wherein, GCD () indicates minimum common divisor.
Above-mentioned electric machine structure main magnetic circuit schematic diagram is as shown in figure 4, first stator tooth and first permanent magnet on stator
Face, the 6th stator tooth and the 5th and the 6th permanent magnet intermediate air part face on stator, magnetic flux pass through rotor
Main tooth, first permanent magnet, connecting bridge, second stator tooth, stator yoke, the 6th stator tooth, connecting bridge, the 5th permanent magnetism
The main tooth of body, rotor, rotor yoke form the circuit of the less magnetic circuit of number of pole-pairs.Main magnetic circuit does not pass through air gap repeatedly, at multiple convex
Shape is played, so that the flux density of vernier magneto has a distinct increment, to improve the unloaded back-emf and torque density of motor.
In addition, the magnet structure of tangential excitation makes magneto generate reluctance torque, changing electric current angle can preferably be turned using magnetic resistance
Square, to further increase output torque.
As shown in figure 5, heretofore described stator core can also be division toothing further to promote torque, including
Stator yoke 11 and multiple stator tooths, each stator tooth include the main tooth 12 of a stator and multiple assist tooths 13, the stator master
The bottom of tooth 12 is connected with the stator yoke 11, the bottom of each assist tooth 13 and the top phase of the main tooth 12 of the stator
Even；Wherein, spacing can be different between each assist tooth in the stator tooth, and angle can be between each assist tooth
It is unequal.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (7)
1. a kind of extremely tangential excitation vernier magneto of alternating characterized by comprising stator core (1), winding (2), permanent magnetism
Body (3) and rotor core (4)；
The winding (2) is placed in the stator slot of the stator core (1)；
The rotor core (4) includes rotor yoke (43) and multiple along equally distributed turn of the rotor yoke external peripheral surface
Sub- tooth；The rotor tooth is in H type, including the main tooth of rotor (41) and connecting bridge (42), and the connecting bridge (42) is towards identical；
The permanent magnet (3) circumferentially tangential excitation, and polarity is identical, is inserted into the rotor tooth.
2. a kind of extremely tangential excitation vernier magneto of alternating according to claim 1, which is characterized in that the stator iron
The heart (1) includes along the equally distributed stator slot of inside circumference and the stator tooth between adjacent stator slots.
3. a kind of extremely tangential excitation vernier magneto of alternating according to claim 2, which is characterized in that the rotor tooth
Quantity Zr, the stator slot quantity ZsWith the winding number of pole-pairs PaMeet following relationship:
Wherein, GCD () indicates minimum common divisor.
4. a kind of extremely tangential excitation vernier magneto of alternating according to claim 1, which is characterized in that the stator iron
The heart (1) includes stator yoke (11) and multiple stator tooths, and each stator tooth includes a main tooth of stator (12) and multiple assist tooths
(13), the bottom of the main tooth of the stator (12) is connected with the stator yoke (11), the bottom of each assist tooth (13) with
The top of the main tooth of stator (12) is connected.
5. a kind of extremely tangential excitation vernier magneto of alternating according to claim 1-4, which is characterized in that institute
Winding (2) are stated as centralization or distributed three-phase windings.
6. a kind of extremely tangential excitation vernier magneto of alternating according to claim 1-5, which is characterized in that institute
It states stator core (1) and the rotor core (4) is formed by silicon steel sheet laminated.
7. a kind of extremely tangential excitation vernier magneto of alternating according to claim 1-6, which is characterized in that institute
State Ru-Fe-Mn, SmCo or the ferrite that permanent magnet is cutting orientation magnetizing, excitation direction and the rotor tooth towards identical or opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910331460.5A CN110112878A (en) | 2019-04-24 | 2019-04-24 | A kind of extremely tangential excitation vernier magneto of alternating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910331460.5A CN110112878A (en) | 2019-04-24 | 2019-04-24 | A kind of extremely tangential excitation vernier magneto of alternating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110112878A true CN110112878A (en) | 2019-08-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910331460.5A Pending CN110112878A (en) | 2019-04-24 | 2019-04-24 | A kind of extremely tangential excitation vernier magneto of alternating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110112878A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112491229A (en) * | 2020-12-31 | 2021-03-12 | 山东理工大学 | Variable magnetic flux hybrid excitation permanent magnet vernier motor for electric automobile |
| CN112531931A (en) * | 2020-11-09 | 2021-03-19 | 华中科技大学 | Vernier permanent magnet motor with stator provided with coding type auxiliary teeth |
| CN113991895A (en) * | 2021-10-14 | 2022-01-28 | 华中科技大学 | Split tooth integrated winding starting generator |
| WO2023108908A1 (en) * | 2021-12-17 | 2023-06-22 | 淮安威灵电机制造有限公司 | Prefabricated rotor punching sheet, rotor assembly, electric motor and electrical device |
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2019
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| US20130076159A1 (en) * | 2010-04-28 | 2013-03-28 | Korea Electrotechnology Research Institute | Winding configuration of doubly salient permanent magnet electric machine |
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| CN108768008A (en) * | 2018-05-30 | 2018-11-06 | 华中科技大学 | A kind of switch flux-linkage magneto |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112531931A (en) * | 2020-11-09 | 2021-03-19 | 华中科技大学 | Vernier permanent magnet motor with stator provided with coding type auxiliary teeth |
| CN112531931B (en) * | 2020-11-09 | 2021-10-08 | 华中科技大学 | Vernier permanent magnet motor with stator provided with coding type auxiliary teeth |
| CN112491229A (en) * | 2020-12-31 | 2021-03-12 | 山东理工大学 | Variable magnetic flux hybrid excitation permanent magnet vernier motor for electric automobile |
| CN113991895A (en) * | 2021-10-14 | 2022-01-28 | 华中科技大学 | Split tooth integrated winding starting generator |
| CN113991895B (en) * | 2021-10-14 | 2022-10-14 | 华中科技大学 | Split-tooth integrated winding starter generator |
| WO2023108908A1 (en) * | 2021-12-17 | 2023-06-22 | 淮安威灵电机制造有限公司 | Prefabricated rotor punching sheet, rotor assembly, electric motor and electrical device |
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20190809 |