CN109391049B - Variable magnetic flux permanent magnet motor of electric automobile pre-wound coil - Google Patents
Variable magnetic flux permanent magnet motor of electric automobile pre-wound coil Download PDFInfo
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- CN109391049B CN109391049B CN201811413839.2A CN201811413839A CN109391049B CN 109391049 B CN109391049 B CN 109391049B CN 201811413839 A CN201811413839 A CN 201811413839A CN 109391049 B CN109391049 B CN 109391049B
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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
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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
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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
- H02K1/26—Rotor cores with slots for windings
- H02K1/265—Shape, form or location of the slots
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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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention provides a variable magnetic flux permanent magnet motor of a pre-wound coil of an electric automobile, and belongs to the technical field of automobile motors. The method is characterized in that: the permanent magnet motor comprises a convex lens-shaped iron core, a non-magnetic-conductive rotor iron core, a stator iron core, a magnetic modulation winding, an armature winding, a permanent magnet and the like, wherein 12 stator poles with different widths are arranged on the inner side of the stator iron core, the magnetic modulation stator poles and the armature stator poles are arranged at intervals, and the pole arc angle of the magnetic modulation stator poles is 12 degrees larger than that of the armature stator poles; the arc-shaped groove of the non-magnetic-conducting rotor iron core is embedded with a convex lens-shaped iron core formed by laminating silicon steel sheets, a yoke part connecting two stator poles is embedded with a planar permanent magnet, and the permanent magnet and the arc tangential direction form an included angle of 45 degrees. The technology of the invention can realize that after the pre-wound winding is embedded into the broken stator pole, the stator iron core is bent into a circle and put into the motor shell.
Description
Technical Field
The invention relates to a variable magnetic flux permanent magnet motor of a pre-wound coil of an electric automobile, and belongs to the technical field of automobile motors.
Background
Energy conservation and environmental protection are always pursued targets for automobiles. The problems of environment deterioration and energy shortage are increasingly highlighted in the current society, and the requirements of the whole society on energy conservation and environmental protection are promoting the development of new energy automobiles. Electric vehicles are becoming a major direction of development as representatives of new energy vehicles. The driving motor is one of the key technologies to be researched by the electric automobile. The improvement of the motor efficiency can improve the driving range of the automobile, reduce the faults caused by the heating of the motor and prolong the service life.
The automobile, especially military vehicles, require the automobile motor to have higher reliability, and the motor fault-tolerant technology can be used for improving the reliability of the motor, for example, the motor can still run in a derating way under the condition of partial fault. However, fault tolerant motors are premised on effective fault isolation, which can negatively impact other normal components if such a fault cannot be effectively isolated.
In order to realize the isolation among windings of the motor, researchers put forward the concept of an integrated modular motor, the motor is designed into a segmented pole shoe and a concentrated winding which are electromagnetically separated from each other, each pole is provided with an independent driving circuit unit and combined into a complete motor system, and the modular motor has certain fault-tolerant capability due to the design of a redundant structure, so that the modular motor is the development direction of a future electric traction system.
When the traditional distributed winding motor winding is short-circuited, induced electromotive force can be generated in normal phase, so that the system performance of the motor is influenced. To achieve magnetic isolation, it is essential to reduce the mutual inductance between the windings of the phases. The modular motor can realize magnetic isolation by adopting concentrated windings, each stator pole is provided with only one set of windings, the self inductance of the windings is far greater than the mutual inductance of the windings, and the modular motor has stronger magnetic isolation capability and can effectively avoid the phenomenon of fault infection.
The high-reliability multi-phase fault-tolerant motor enhances the reliability and fault-tolerant performance of the motor by effectively isolating phases, and in the motor with an isolating function, the existing related applications mainly have the following application numbers: patent application for invention of CN 201010120847.5: a fault-tolerant permanent magnet linear motor comprises a stator, a rotor and an armature winding. A plurality of armature teeth are uniformly distributed on a stator at intervals, an armature winding is wound on the armature teeth, a set of armature winding is arranged in a tooth slot of each armature tooth, and an isolation tooth is arranged between every two adjacent armature teeth; the permanent magnet is attached to the end part of the armature tooth, and the height of the isolation tooth is greater than that of the armature tooth attached with the permanent magnet; the rotor is in a salient pole shape consisting of a rotor iron core and a plurality of rotor teeth. The invention has the advantages of simple structure, high power density and high reliability, physical isolation, thermal isolation and magnetic circuit decoupling are realized between motor phases, the permanent magnet is suitable for heat dissipation, and the fault operation and fault tolerance performance are strong.
However, the conventional reluctance motor cannot effectively achieve magnetic isolation, and the magnetic circuits of the phases of the conventional reluctance motor are coupled with each other, for example, the number of stator and rotor poles of the conventional three-phase reluctance motor should be 6/4 pole structure, 12 stator poles correspond to 8 rotor poles, and the yoke part is shared by three-phase windings. The invention provides a novel motor with a magnetic circuit structure, and the stator and the rotor with the isolation function are all modularized motor technology.
Based on the advantages, the invention provides the hybrid excitation reluctance motor which has the advantages of an electric excitation motor, the advantages of a reluctance motor and the advantages of a modularized motor. The invention provides a variable magnetic flux permanent magnet motor of an electric automobile pre-wound coil, wherein 12 stator poles with equal width are arranged on the inner side of a stator iron core, and a non-magnetic-conductive rotor iron core is provided with 10 arc-shaped grooves; convex lens-shaped iron cores formed by laminating silicon steel sheets are embedded in the circular arc-shaped grooves, a magnetic regulating winding is wound on each stator pole on each stator iron core, armature windings are wound on the other stator poles, a planar permanent magnet is embedded in a yoke part connecting the two stator poles, and an included angle of 45 degrees is formed between the permanent magnet and the tangential direction of the circular arc. The technology of the invention can realize that after the pre-wound winding is embedded into the broken stator pole, the stator iron core is bent into a circle and put into the motor shell. Meanwhile, the technology of the invention is a short magnetic circuit motor, and the iron loss is small under the same magnetic density; the winding is a short-moment winding, so that a large amount of copper materials can be saved, the heat of the generator can be reduced, and the efficiency of the generator is improved; the outer side of each stator tooth of the motor is only provided with one phase of winding, the windings are not overlapped, the slot utilization rate is high, and the slot fullness rate is high. The motor stator core is integral, the structure is reliable, but each phase of magnetic circuit is relatively independent, and each winding is isolated from each other, so that fault propagation can be effectively prevented; meanwhile, the motor has the advantages of simple structure, large stator and rotor contact surface, high power density and the like.
At present, the applicant does not search the technology related to the invention through domestic and foreign search.
Disclosure of Invention
In order to provide the variable magnetic flux permanent magnet motor of the pre-wound coil of the electric automobile, which has a modular structure, a short-moment armature winding and a magnetic regulating winding which are isolated from each other, and can improve the slot fullness rate by the pre-wound winding, the invention adopts the following technical scheme:
the permanent magnet motor comprises a convex lens-shaped iron core, a non-magnetic-conductive rotor iron core, a stator iron core, a magnetic regulating winding, an armature winding, a shaft, a screw, a pressing sheet and a permanent magnet;
the inner side of the stator core is provided with 12 stator poles with equal width;
the non-magnetic conducting rotor core is positioned at the inner side of the stator core and fixed on the shaft; the non-magnetic-conductive rotor core is provided with 10 circular arc grooves; a convex lens-shaped iron core formed by laminating silicon steel sheets is embedded in the circular arc-shaped groove, a through hole is formed in the middle of the convex lens-shaped iron core, a screw penetrates through the pressing sheet and the convex lens-shaped iron core, and the convex lens-shaped iron core is fixed on the non-magnetic-conductive rotor iron core by the pressing sheet;
stator slots are arranged between the two stator poles, the length of the outer arc of the convex lens-shaped iron core is greater than the sum of the arc length of one stator pole and the arc length of one stator slot, and the length of the outer arc of the convex lens-shaped iron core is not greater than the sum of the arc length of one stator pole and the arc lengths of the two stator slots;
the magnetic regulating winding and the armature winding are both centralized short-moment windings;
winding a magnetic regulating winding on every other stator pole on the stator iron core, winding armature windings on the other stator poles, and enabling the winding directions of all the magnetic regulating windings to be consistent; all armature windings are wound in the same direction;
one or two vertical plane permanent magnets are embedded in the yoke part connecting the two stator poles; when the permanent magnet is one piece, an included angle of 45 degrees is formed between the permanent magnet and the arc tangential direction of the permanent magnet.
When the number of the permanent magnets is two, the included angles between the two V-shaped permanent magnets and the tangential direction of the arc are 45 degrees and 135 degrees respectively.
A planar permanent magnet is embedded in a yoke part of each stator pole, the permanent magnet divides a stator core into 12 modules, and the outermost sides of two adjacent modules are connected by 1mm, so that the 12 modules of the stator core are not completely disconnected; two adjacent modules can be broken off around the joint of the yoke part of the stator;
the magnetic regulating coils which are tightly wound and bonded into a whole form a pre-wound magnetic regulating winding, and the armature coils which are tightly arranged and bonded into a whole form a pre-wound armature winding; after the pre-wound magnetic regulating winding and the armature winding are respectively embedded into the magnetic regulating pole and the armature pole, 12 modules of the stator core are wound into a circle and placed into a motor shell.
The magnetic regulating coils which are tightly wound and bonded into a whole form a pre-wound high-slot-fullness magnetic regulating winding, and the armature coils which are tightly arranged and bonded into a whole form a pre-wound high-slot-fullness armature winding; after the pre-wound magnetic regulating winding and the armature winding are respectively embedded into the broken magnetic regulating pole and the broken armature pole, 12 modules of the stator core are bent into a circle and placed into a motor shell.
As above electric automobile prewound variable magnetic flux permanent-magnet machine, its characterized in that:
the middle of the convex lens-shaped iron core is provided with a through hole, a screw passes through the pressing sheet and the convex lens-shaped iron core, and the convex lens-shaped iron core is fixed on the cast aluminum rotor iron core by utilizing the pressing sheet.
The invention has the following beneficial effects:
1. according to the variable magnetic flux permanent magnet motor of the pre-wound coil of the electric automobile, after the pre-wound coil is embedded into the broken stator pole, the stator iron core is bent into a round shape and placed into the motor shell, and compared with the traditional motor wire embedding technology, the slot fullness rate is greatly improved;
2. the structure adopted by the invention is provided with the permanent magnet and the magnetic regulating winding, the air gap magnetic field can be regulated at any time, and the structure is suitable for electric operation flux weakening speed regulation and power generation operation voltage regulation;
3. the magnetic circuits of all phases of the motor stator are relatively independent, and all windings are mutually isolated, so that fault propagation can be effectively prevented, and the motor stator has the advantages of modular motor;
4. the total flux linkage length can be effectively reduced, and the iron loss is reduced;
5. the rotor core conducts magnetism gradually, square wave counter electromotive force of a traditional reluctance motor can be changed into approximate sine waves, and harmonic waves and pulsation are reduced;
6. the winding is a short-moment winding, so that a large amount of copper materials can be saved, the heat of the generator can be reduced, and the efficiency of the generator is improved;
7. the magnetic conduction part of the rotor core is simple and reliable to fix.
Drawings
Fig. 1 is a schematic structural diagram of a variable-flux permanent magnet motor of a pre-wound coil of an electric vehicle. Wherein: 1. convex lens shape iron core, 2, cast aluminum rotor iron core, 3, stator iron core, 4, magnetic regulating winding, 5, armature winding, 6, shaft, 7, screw, 8, pressing sheet, 9 and permanent magnet.
Fig. 2 is a coil insert of the variable-flux permanent magnet motor of the pre-wound coil of the electric vehicle. Wherein: 1-12 represent 12 poles, respectively, F, A, B and C represent a field adjusting winding and a-phase armature winding, B-phase armature winding and C-phase armature winding, respectively.
Fig. 3 is a schematic diagram of a single piece of planar magnetic steel embedded in a stator yoke of a variable magnetic flux permanent magnet motor of a pre-wound coil of an electric vehicle.
Fig. 4 is a schematic diagram of two pieces of vertical plane magnetic steel embedded in a stator yoke part of a variable magnetic flux permanent magnet motor of the pre-wound coil of the electric vehicle.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a modular motor of a pre-wound high slot-fill-rate winding of an electric vehicle. The label F is the pole where the magnetic adjusting winding is located, and A, B and C are the poles where the A-phase, B-phase and C-phase armature windings are located respectively.
The permanent magnet motor comprises a convex lens-shaped iron core, a non-magnetic-conductive rotor iron core, a stator iron core, a magnetic regulating winding, an armature winding, a shaft, a screw, a pressing sheet and a permanent magnet;
the inner side of the stator core is provided with 12 stator poles with equal width;
the non-magnetic conducting rotor core is positioned at the inner side of the stator core and fixed on the shaft; the non-magnetic-conductive rotor core is provided with 10 circular arc grooves; a convex lens-shaped iron core formed by laminating silicon steel sheets is embedded in the circular arc-shaped groove, a through hole is formed in the middle of the convex lens-shaped iron core, a screw penetrates through the pressing sheet and the convex lens-shaped iron core, and the convex lens-shaped iron core is fixed on the non-magnetic-conductive rotor iron core by the pressing sheet;
stator slots are arranged between the two stator poles, the length of the outer arc of the convex lens-shaped iron core is greater than the sum of the arc length of one stator pole and the arc length of one stator slot, and the length of the outer arc of the convex lens-shaped iron core is not greater than the sum of the arc length of one stator pole and the arc lengths of the two stator slots;
one or two vertical plane permanent magnets are embedded in the yoke part connecting the two stator poles; when the permanent magnet is one piece, an included angle of 45 degrees is formed between the permanent magnet and the arc tangential direction of the permanent magnet.
When the number of the permanent magnets is two, the included angles between the two V-shaped permanent magnets and the tangential direction of the arc are 45 degrees and 135 degrees respectively.
A planar permanent magnet is embedded in a yoke part of each stator pole, the permanent magnet divides a stator core into 6 modules, and the outermost sides of two adjacent modules are connected by 1mm, so that 12 modules of the stator core are not completely disconnected; two adjacent modules can be broken off around the joint of the yoke part of the stator;
the magnetic regulating coils which are tightly wound and bonded into a whole form a pre-wound magnetic regulating winding, and the armature coils which are tightly arranged and bonded into a whole form a pre-wound armature winding; after the pre-wound magnetic regulating winding and the armature winding are respectively embedded into the magnetic regulating pole and the armature pole, 12 modules of the stator core are wound into a circle and placed into a motor shell.
The magnetic regulating coils which are tightly wound and bonded into a whole form a pre-wound high-slot-fullness magnetic regulating winding, and the armature coils which are tightly arranged and bonded into a whole form a pre-wound high-slot-fullness armature winding; after the pre-wound magnetic regulating winding and the armature winding are respectively embedded into the broken magnetic regulating pole and the broken armature pole, 12 modules of the stator core are bent into a circle and placed into a motor shell.
The modular motor with the pre-wound high-slot-fill-ratio winding for the electric automobile is characterized in that:
the middle of the convex lens-shaped iron core is provided with a through hole, a screw passes through the pressing sheet and the convex lens-shaped iron core, and the convex lens-shaped iron core is fixed on the cast aluminum rotor iron core by utilizing the pressing sheet.
Fig. 2 is a coil insert of the variable-flux permanent magnet motor of the pre-wound coil of the electric vehicle. Wherein: 1-12 represent 12 poles, respectively, F, A, B and C represent a field adjusting winding and a-phase armature winding, B-phase armature winding and C-phase armature winding, respectively. The magnetic regulating winding and the armature winding are both centralized short-moment windings.
Winding a magnetic regulating winding on every other stator pole on the stator iron core, winding armature windings on the other stator poles, and enabling the winding directions of all the magnetic regulating windings to be consistent; all armature windings are wound in the same direction.
Fig. 3 is a schematic diagram of a single piece of planar magnetic steel embedded in a stator yoke of a variable magnetic flux permanent magnet motor of a pre-wound coil of an electric vehicle.
A planar permanent magnet is embedded in a yoke part of each stator pole, the permanent magnet divides a stator core into 12 modules, and the outermost sides of two adjacent modules are connected by 1mm, so that the 12 modules of the stator core are not completely disconnected;
the magnetic regulating coils which are tightly wound and bonded into a whole form a pre-wound magnetic regulating winding, and the armature coils which are tightly arranged and bonded into a whole form a pre-wound armature winding; after the pre-wound magnetic regulating winding and the armature winding are respectively embedded into the magnetic regulating pole and the armature pole, 12 modules of the stator core are wound into a circle and placed into a motor shell.
Fig. 4 is a schematic diagram of two pieces of vertical plane magnetic steel embedded in a stator yoke part of a variable magnetic flux permanent magnet motor of the pre-wound coil of the electric vehicle.
Two perpendicular plane permanent magnets are embedded in a yoke part of each stator pole, included angles between the two permanent magnets and the tangential direction of the arc are 45 degrees and 135 degrees respectively, the stator core is divided into 12 modules by the permanent magnets, and the outermost sides of the two adjacent modules are connected by 1mm, so that the 12 modules of the stator core are not completely disconnected.
The magnetic regulating coils which are tightly wound and bonded into a whole form a pre-wound magnetic regulating winding, and the armature coils which are tightly arranged and bonded into a whole form a pre-wound armature winding; after the pre-wound magnetic regulating winding and the armature winding are respectively embedded into the magnetic regulating pole and the armature pole, 12 modules of the stator core are wound into a circle and placed into a motor shell.
The following is a description of the working principle of the variable flux permanent magnet motor of the pre-wound coil of the electric vehicle according to the present invention.
The variable magnetic flux permanent magnet motor of the electric automobile pre-wound coil drives the rotor to rotate through the rotation of the shaft, and the magnetic regulating winding generates a radial magnetic field at the moment. The magnetic field on the stator core is adjusted to form a closed magnetic circuit through the stator pole, the air gap, the magnetic rotor core, the air gap, the other stator pole of the stator core, the permanent magnet and the stator yoke part in sequence on the stator core and finally returning to the initial stator pole. When the rotor pole connects one-phase armature stator pole and the magnetic regulating stator pole, the magnetic resistance of the armature winding on the phase armature stator pole is minimum, the magnetic linkage is maximum, and the mutual inductance of the phase armature winding and the magnetic regulating winding is maximum. When the rotor pole makes the armature stator pole of one phase not communicate with the magnetic modulation stator pole, the magnetic resistance of the armature winding turn chain on the stator pole of the phase is maximum, and the magnetic linkage is minimum.
A phase winding of the variable magnetic flux permanent magnet motor of the pre-wound coil of the electric automobile, which has an ascending inductance, is energized with a forward current, so that the winding can generate a positive torque; a positive current is applied to one phase winding of the inductor step-down, which can generate a negative torque. The invention is also obviously different from the traditional technology, and the rotor poles are fully distributed on the circumference of the rotor, so that the magnetic flux which can be conducted is large, and the power is large.
Because of the rotor modularization, each armature winding and the magnetic regulating winding can only form a magnetic loop at the adjacent stator pole and can not pass through other stator poles, and the motor has high magnetic isolation performance. Therefore, when one phase winding fails, the rest phase windings are not affected, and derating operation can be continued.
When the magnetic regulating winding is electrified in a forward direction with large current in a short time, the permanent magnet can be magnetized; when the magnetic regulating winding is electrified reversely by large current in short time, the permanent magnet is demagnetized; in the operation process, the magnetic flux of the armature winding is changed by continuously magnetizing and demagnetizing.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (3)
1. Electric automobile is variable magnetic flux permanent-magnet machine of coiling coil in advance, its characterized in that:
the permanent magnet motor comprises a convex lens-shaped iron core, a cast aluminum rotor iron core, a stator iron core, a magnetic regulating winding, an armature winding, a shaft, a screw, a pressing sheet and a permanent magnet;
the inner side of the stator core is provided with 12 stator poles with different widths, wherein one half of the stator poles are magnetic modulating stator poles, the other half of the stator poles are armature stator poles, and the magnetic modulating stator poles and the armature stator poles are arranged at intervals; a stator slot is arranged between the two stator poles, pole shoes are arranged on the stator poles, and the pole arc angle of the magnetism regulating stator pole is 12 degrees larger than that of the armature stator pole;
the cast aluminum rotor core is positioned at the inner side of the stator core and fixed on the shaft; the cast aluminum rotor core is provided with 10 circular arc grooves; a convex lens-shaped iron core formed by laminating silicon steel sheets is embedded in the circular arc-shaped groove; the outer arc angle of the convex lens-shaped iron core is not more than the sum of the pole arc angle of one magnetism regulating stator pole and the arc angles of the two stator slots;
the magnetic regulating winding and the armature winding are both centralized short-moment windings; all the magnetic regulating windings are wound in the same direction; all armature windings are wound in the same direction;
one or two planar permanent magnets are embedded in a yoke part connecting the two stator poles, and the permanent magnets are neodymium nickel cobalt permanent magnets;
when the permanent magnet is one piece, an included angle of 45 degrees is formed between the permanent magnet and the arc tangential direction of the permanent magnet;
when the number of the permanent magnets is two, the included angles between the two permanent magnets which are arranged in a V shape and the tangential direction of the arc are 45 degrees and 135 degrees respectively;
the permanent magnet divides the stator core into 12 modules, and the outermost sides of two adjacent modules are connected by 1mm, so that the 12 modules of the stator core are not completely disconnected;
when the magnetic regulating winding is electrified in a forward direction with large current in a short time, the permanent magnet can be magnetized; when the magnetic regulating winding is electrified reversely by large current in short time, the permanent magnet is demagnetized; in the operation process, the magnetic flux of the armature winding is changed by continuously magnetizing and demagnetizing.
2. The variable flux permanent magnet motor of electric vehicle pre-wound coils as claimed in claim 1, wherein:
the magnetic regulating coils which are tightly wound and bonded into a whole form a pre-wound magnetic regulating winding, and the armature coils which are tightly arranged and bonded into a whole form a pre-wound armature winding; after the pre-wound magnetic regulating winding and the armature winding are respectively embedded into the magnetic regulating pole and the armature pole, 12 modules of the stator core are rolled into a circle and put into a motor shell.
3. The variable flux permanent magnet motor of electric vehicle pre-wound coils as claimed in claim 1, wherein:
the middle of the convex lens-shaped iron core is provided with a through hole, a screw passes through the pressing sheet and the convex lens-shaped iron core, and the convex lens-shaped iron core is fixed on the cast aluminum rotor iron core by utilizing the pressing sheet.
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| CN201811413839.2A CN109391049B (en) | 2018-11-26 | 2018-11-26 | Variable magnetic flux permanent magnet motor of electric automobile pre-wound coil |
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| CN201811413839.2A CN109391049B (en) | 2018-11-26 | 2018-11-26 | Variable magnetic flux permanent magnet motor of electric automobile pre-wound coil |
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| CN109391049B true CN109391049B (en) | 2020-12-25 |
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Families Citing this family (3)
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| WO2020211690A1 (en) * | 2019-04-18 | 2020-10-22 | 苏州阿福机器人有限公司 | Motor magnetic flux changing method and device |
| CN110957832B (en) * | 2019-12-09 | 2021-10-19 | 山东唐骏欧铃汽车制造有限公司 | Automobile engine driven permanent magnet generator |
| CN110932443B (en) * | 2019-12-09 | 2021-10-19 | 山东唐骏欧铃汽车制造有限公司 | Low-harmonic-content hub motor of electric automobile |
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| JP2006246571A (en) * | 2005-03-01 | 2006-09-14 | Nagasaki Univ | Reluctance motor |
| CN102185451A (en) * | 2011-04-19 | 2011-09-14 | 南京航空航天大学 | Segmented rotor type magnetic flux switching motor with hybrid excitation and magnetic adjustment method |
| CN202997721U (en) * | 2013-01-07 | 2013-06-12 | 济南吉美乐电源技术有限公司 | Segmented rotor double salient pole electromotor equipped with novel punching sheet structure |
| CN103151859A (en) * | 2013-02-01 | 2013-06-12 | 东南大学 | Magnetic flow switched and surface-mounted type permanent magnet memory motor |
| CN104578477A (en) * | 2014-12-11 | 2015-04-29 | 东南大学 | Mixed permanent magnetic pole-alternating and magnetic flux-switching memory motor and winding switching magnetism-weakening control method thereof |
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