CN114421681A - Unilateral axial magnetic adjustment device of vertical hybrid excitation motor - Google Patents
Unilateral axial magnetic adjustment device of vertical hybrid excitation motor Download PDFInfo
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- CN114421681A CN114421681A CN202210081144.9A CN202210081144A CN114421681A CN 114421681 A CN114421681 A CN 114421681A CN 202210081144 A CN202210081144 A CN 202210081144A CN 114421681 A CN114421681 A CN 114421681A
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- 230000005284 excitation Effects 0.000 title claims abstract description 87
- 210000000078 claw Anatomy 0.000 claims abstract description 129
- 238000004804 winding Methods 0.000 claims abstract description 71
- 230000004907 flux Effects 0.000 claims abstract description 25
- 230000001105 regulatory effect Effects 0.000 claims abstract description 22
- 230000008859 change Effects 0.000 claims abstract description 7
- 230000005484 gravity Effects 0.000 claims description 15
- 230000009471 action Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 3
- 230000005389 magnetism Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000003044 adaptive effect Effects 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 208000029154 Narrow face Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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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
- H02K3/20—Windings for salient poles for auxiliary purposes, e.g. damping or commutating
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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
- H02K3/24—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/207—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/03—Machines characterised by aspects of the air-gap between rotor and stator
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/12—Transversal flux machines
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- 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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Abstract
The invention discloses a unilateral axial magnetic regulating device of a vertical hybrid excitation motor, which comprises an end cover, an excitation winding, claw poles and a rotor, wherein the claw poles are arranged between the end cover and the rotor and comprise inner claw poles and outer claw poles; the annular groove is arranged above a gap between the inner claw pole and the outer claw pole. According to the invention, the outer claw pole rotates to generate upward wind to blow the movable sheet and the adjusting rod to move, so that the number of turns of the winding is automatically switched, the change of axial magnetic flux is realized, and the radial main air gap magnetic field is adaptively adjusted.
Description
Technical Field
The invention relates to the field of hybrid excitation motors, in particular to a unilateral axial magnetic adjustment device of a vertical hybrid excitation motor.
Background
The permanent magnet motor has become the mainstream model of the motor for the electric automobile at present due to the advantages of high efficiency, high power density and the like, and the occupancy rate of the permanent magnet motor is on the trend of rising year by year. The traditional permanent magnet synchronous motor has the defects that the air gap field is difficult to adjust, so that the constant power area is narrow, and the operation speed regulation range is limited; in the existing axial and radial mixed excitation motor, an excitation winding is additionally arranged in the motor axial direction, the main air gap magnetic field of the motor is adjusted by adjusting the current of the excitation winding, but the adjustment of the current can be realized only by manually switching, and the operation is complex.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the invention provides a unilateral axial magnetic adjustment device of a vertical hybrid excitation motor, aiming at the technical problem that the current of different excitation windings needs to be manually switched by the outside to change the axial magnetomotive force and further adjust the magnetic field intensity of a main air gap of the motor in the existing axial and radial hybrid excitation motor.
The technical scheme adopted by the invention for solving the technical problem is as follows:
the utility model provides a magnetic device is transferred to vertical mixed excitation motor's unilateral axial, includes end cover, excitation winding, claw utmost point and rotor, the end cover with be provided with between the rotor the claw utmost point, the claw utmost point includes interior claw utmost point and outer claw utmost point, be provided with the ring channel on the end cover, be in on the up end of end cover the equipartition of ring channel department has the ventilation hole, be provided with in the ring channel excitation winding and removal piece, removal piece one end with outer wall contact in the ring channel is connected, the other end pass through the regulating rod with excitation winding contact is connected, excitation winding sets up interior wall side in the ring channel.
The excitation winding is formed by winding an excitation coil, each excitation coil is provided with a switching point, all the switching points are on the same vertical line and correspond to the adjusting rods, one end of each adjusting rod is horizontally connected with the corresponding switching point in a contact mode, and the other end of each adjusting rod is fixedly connected with the corresponding moving piece.
The utility model discloses a switch, including the regulating rod, the ring channel is equipped with the regulating rod, the regulating rod is equipped with the T type recess on the outer wall, the regulating rod is equipped with the T type arch on the one end circumference, the T type arch sets up in the T type recess, the T type arch can reciprocate in the T type recess, under the effect of external force, the removal piece can reciprocate in the ring channel when removing the piece and removing, it drives to remove the piece the regulating rod is in switch between the switching point to change the winding number of turns in the access circuit.
The T-shaped groove is provided with a sealing cover at one end far away from the upper end face of the end cover, the adjusting rod and the moving piece are of an integrated structure, under the action of no external force, the moving piece and the adjusting rod can return to the lowest end of the T-shaped groove, namely the sealing cover, and the adjusting rod is in point contact connection with the corresponding lowest switching point.
The inner claw pole comprises an inner claw pole circular ring and an inner claw pole yoke, and the outer claw pole comprises an outer claw pole circular ring and an outer claw pole yoke.
The rotor is embedded with a tangential magnetizing permanent magnet, and a magnetic N area and a magnetic S area which are distributed at intervals are formed.
The lower terminal surface circumference equipartition of interior claw utmost point ring have with magnetism N district quantity equals interior claw utmost point yoke portion, every the upper end of interior claw utmost point yoke portion equallyd divide do not with the lower terminal surface of interior claw utmost point ring is connected, and the lower extreme is equallyd divide do not correspond rather than magnetism N district is connected, and is located magnetism N district is close to the one end of rotor central point.
The lower extreme circumference equipartition of outer claw utmost point ring have with magnetism S district quantity equals outer claw utmost point yoke portion, every the upper end of outer claw utmost point yoke portion equallyd divide do not with the lower terminal surface of outer claw utmost point ring is connected, and the lower extreme is equallyd divide do not correspond rather than magnetism S district is connected, and is located magnetism S district is kept away from the one end of rotor central point.
The inner claw pole yoke part is a common arc-shaped curved plate, and the radian of the inner claw pole yoke part is consistent with that of the inner claw pole ring.
The outer claw pole yoke part is a twisted arc-shaped curved plate and can generate wind perpendicular to the end face of the rotor and towards the end cover.
According to the anticlockwise direction, the distance from the inner side surface of the head part of the outer claw pole yoke part to the central point of the rotor is larger than the distance from the inner side surface of the tail part of the outer claw pole yoke part to the central point of the rotor, the upper half part of the outer claw pole yoke part inclines towards the outer side of the rotor, and the whole outer claw pole yoke part is in an arc-shaped twisted shape; therefore, when the outer claw pole rotates anticlockwise along with the rotor, the twisted outer claw pole yoke exerts upward thrust on air in the outer claw pole yoke due to the shape of the outer claw pole yoke, so that the air stably flows upwards along the axial direction, the annular groove is provided with the ventilation opening, the air can conveniently pass through the annular groove, and upward wind power is provided for the moving piece.
The inner claw pole ring and the outer claw pole ring are arranged in a concentric circle mode and are on the same horizontal plane, a gap is formed between the inner claw pole ring and the outer claw pole ring, and the annular groove is located right above the gap.
The external force is wind power which can also cool heat brought by electrifying the direct current excitation winding, and at the moment, the moving piece and the adjusting rod in the annular groove can be subjected to upward wind power and self gravity.
The direct current excitation winding leads out a constant direct current from a stator armature winding through a rectifier module or directly leads in a constant direct current from the outside of the motor, after the motor is started, an outer claw pole can generate a wind force towards the direction of an end cover and blows to the moving piece and the adjusting rod in the annular groove, when the self gravity of the moving piece and the adjusting rod is smaller than the wind force borne by the motor, the moving piece and the adjusting rod which are positioned at the lowest part synchronously and vertically move upwards and stop after the wind force borne by the moving piece and the adjusting rod reaches the balanced position again, at the moment, the adjusting rod can be connected with a switching point which is closest to the adjusting rod on the direct current excitation winding, the number of turns of the direct current excitation winding which is connected into the circuit is different, the number of turns of the direct current excitation winding which is connected into the circuit is more upwards, and the axial excitation magnetic flux is gradually reduced, the main air gap magnetic field gradually weakens;
after the rotating speed of the motor is reduced, wind power is reduced, the moving piece and the adjusting rod synchronously and vertically move downwards under the action of gravity, the moving piece and the adjusting rod synchronously move downwards to the position where the wind power is balanced with the gravity of the moving piece and the adjusting rod, the adjusting rod can be connected with a switching point on the direct current excitation winding, which is closest to the adjusting rod, at different switching points, the number of turns of the direct current excitation winding connected to the circuit is different, the number of turns of the connected direct current excitation winding is more downwards, axial excitation magnetic flux is gradually increased, and a main air gap magnetic field is gradually increased.
The invention has the following positive beneficial effects:
1. according to the invention, the moving sheet and the adjusting rod are blown by upward wind generated when the outer claw pole yoke part rotates along with the rotor to move in the annular groove, so that the number of turns of the excitation winding is switched, the change of axial magnetic flux is realized, the radial main air gap magnetic field is adjusted, and the adjustment of the magnetic field of the permanent magnet motor is realized.
2. When the excitation winding adjusts the axial magnetic flux, the excitation magnetic potential is adjusted without changing the input current manually from the outside, only a constant direct current is led out from the armature winding or is led in from the outside of the motor, and the excitation magnetic potential is adjusted by the movable sheet and the adjusting rod in the end cover according to the rotating speed of the rotor and the number of turns of the winding in a self-adaptive adjusting mode, so that the complexity of motor control is reduced.
3. According to the invention, the upward wind generated by the rotation of the outer claw pole yoke part not only can blow the moving sheet to realize winding switching, but also can cool the direct-current excitation winding, reduce the heat caused by the energization of the winding and prolong the service life of the direct-current excitation winding.
Drawings
Fig. 1 is a schematic structural diagram of a single-side axial magnetic adjustment device of a vertical hybrid excitation motor according to the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is a schematic diagram showing the structural relationship among the moving plate, the adjusting rod and the field winding according to the present invention;
FIG. 5 is a schematic diagram showing the positional relationship of the moving plate, the adjusting rod and the field winding in the end cap according to the present invention;
FIG. 6 is a view showing the positional relationship between a part of the T-shaped projection and the T-shaped groove in the present invention;
FIG. 7 is a bottom view of the end cap of the present invention;
fig. 8 is a schematic structural diagram of the rotor, the outer claw pole and the inner claw pole in the axial adaptive magnetization device of the vertical single-side motor in the embodiment 1 of the invention;
fig. 9 is a schematic structural diagram of the rotor, the outer claw-pole yoke portion and the inner claw-pole yoke portion in the axial adaptive flux-modulating device of the vertical single-side motor in the embodiment 1 of the invention.
Fig. 10 is a schematic structural diagram of the rotor and the outer claw pole and the inner claw pole in the axial adaptive flux modulation device of the vertical single-side motor according to embodiment 2 of the present invention;
fig. 11 is a front view of fig. 10.
Detailed Description
Embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but rather are provided for a more thorough and complete understanding of the present invention. It should be understood that the drawings and the embodiments of the present invention are illustrative only and are not intended to limit the scope of the present invention.
The term "include" and variations thereof as used herein are open-ended, i.e., "including but not limited to".
It should be noted that the terms "first", "second", and the like in the present invention are only used for distinguishing different devices, modules or units, and are not used for limiting the order or interdependence relationship of the functions performed by the devices, modules or units.
The names of messages or information exchanged between devices in the embodiments of the present invention are for illustrative purposes only, and are not intended to limit the scope of the messages or information.
Referring to fig. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 and 11, in which: 1-end cover, 2-excitation winding, 3-rotor, 4-inner claw pole, 4-1-inner claw pole ring, 4-2-inner claw pole yoke, 5-outer claw pole, 5-1-outer claw pole ring, 5-2-outer claw pole yoke, 6-permanent magnet, 7-magnet N area, 8-magnet S area, 9-annular groove, 10-vent hole, 11-moving sheet, 12-regulating rod, 13-switching point, 14-T-shaped groove and 15-T-shaped protrusion.
Example 1: the tangential permanent magnet motor forms a magnetic N area 7 and a magnetic S area 8 which are distributed at intervals on a rotor 3, an inner claw pole yoke part 4-2 is placed in the magnetic N area 7, an outer claw pole yoke part 5-2 is placed in the magnetic S area 8, and both the inner claw pole 4 and the outer claw pole 5 rotate along with the rotor 3 of the motor; the main magnetic circuit of the permanent magnet 6 in the tangential permanent magnet motor is a permanent magnet 6N pole- > rotor 3- > stator- > rotor 3- > permanent magnet 6S pole; because the inner claw pole 4 and the outer claw pole 5 are both made of materials with high magnetic permeability, the permanent magnet 6 can form axial magnetic leakage through the inner claw pole 4, the outer claw pole 5 and the end cover 1, which is not existed in the original permanent magnet motor, and the magnetic circuit of the axial magnetic leakage is that the permanent magnet N pole- > the rotor magnet N area 7- > the inner claw pole 4- > the end cover 1- > the outer claw pole 5- > the rotor magnet S area 8- > the permanent magnet S pole, so that the main air gap magnetic field is weakened.
The embodiment provides a unilateral axial magnetic adjustment device of a vertical mixed excitation motor, a direct current excitation winding 2 leads out a constant direct current from a stator armature winding or leads in a constant direct current from the outside of the motor, a magnetic flux magnetic path generated by the direct current excitation winding is an end cover 1- > an inner claw pole 4- > a rotor magnetic N area 7- > a stator- > a rotor magnetic S area 8- > an outer claw pole 5- > the end cover 1, the direction of the excitation magnetic flux formed by the direct current excitation winding 2 is opposite to the axial leakage magnetic flux direction of a permanent magnet 6 at the end cover 1, the inner claw pole 4 and the outer claw pole 5, and is the same with the main magnetic path magnetic flux direction of the permanent magnet 6 at a main air gap, so the axial excitation magnetic flux can supplement the main air gap magnetic flux, because the product of the direct current value and the number of turns of the direct current winding is a magnetomotive force, the larger the generated excitation magnetic flux is larger, and the number of turns of the direct current excitation winding is increased by 2, excitation magnetic flux enlarges gradually, and main air gap magnetic field strengthens gradually, adjusts the axial magnetic flux size through changing direct current winding number of turns, and then adjusts the magnetic flux that lets in rotor 3 to realize the regulation of main air gap magnetic field, solve the problem that permanent magnet motor accent magnetism is difficult, change axial magnetomotive force through adjusting 2 numbers of turns of axial excitation winding promptly, realize adjusting radial main air gap magnetic field, and then realize the regulation in permanent magnet motor magnetic field.
Specifically including end cover 1, excitation winding 2, claw utmost point and rotor 3, be provided with the claw utmost point between end cover 1 and the rotor 3, end cover 1 is connected with motor housing, is provided with the pivot in the rotor 3, and end cover 1 is passed in the pivot, and the claw utmost point passes through sticky fixation on 3 terminal surfaces of rotor.
The claw pole comprises an inner claw pole 4 and an outer claw pole 5, the inner claw pole 4 and the outer claw pole 5 are made of magnetic materials, and the inner claw pole and the outer claw pole 5 are arranged concentrically at intervals.
The inner claw pole comprises an inner claw pole circular ring 4-1 and an inner claw pole yoke 4-2, the outer claw pole 5 comprises an outer claw pole circular ring 5-1 and an outer claw pole yoke 5-2, and the inner claw pole circular ring 4-1 and the outer claw pole circular ring 5-1 are both regular circular ring shapes.
The rotor 3 is embedded with permanent magnets 6 magnetized in the tangential direction, the magnetic poles of two adjacent permanent magnets 6 are oppositely arranged, a sector magnetic N area 7 and a sector magnetic S area 8 which are distributed at intervals are integrally formed, the permanent magnets 6 penetrate through the upper end face and the lower end face of the rotor 3, the magnetic N area 7 on the upper surface of the rotor 3 is vertically corresponding to the magnetic N area 7 on the lower surface of the rotor 3, and the magnetic S area 8 on the upper surface of the rotor 3 is vertically corresponding to the magnetic S area 8 on the lower surface of the rotor 3.
Inner claw pole yokes 4-2 with the same number as the magnetic N areas 7 are uniformly distributed on the circumference of the lower end face of the inner claw pole ring 4-1, the upper end of each inner claw pole yoke 4-2 is respectively connected with the lower end face of the inner claw pole ring 4-1, and the lower ends are respectively and tightly connected with the corresponding magnetic N areas through gluing; and is located at the narrow face end on the sector-shaped magnetic N region 7.
The lower end surface of the outer claw pole circular ring 5-1 is evenly distributed with outer claw pole yoke parts 5-2 with the same number as the magnetic S area 8, the upper end of each outer claw pole yoke part 5-2 is respectively connected with the lower end surface of the outer claw pole circular ring 5-1, the lower ends are respectively and closely connected with the corresponding magnetic S area through gluing, and the lower ends are positioned on the wide surface end of the fan-shaped magnetic S area 8.
The inner claw pole yoke part 4-2 is a common arc-shaped curved plate, and the radian of the inner claw pole yoke part is consistent with that of the inner claw pole circular ring 4-1.
The outer claw pole yoke part 5-2 is a twisted arc-shaped curved plate and can generate wind perpendicular to the end face of the rotor 3 and towards the end cover 1.
According to the anticlockwise direction, the distance from the inner side surface of the head part of the outer claw pole yoke part 5-2 to the center point of the rotor 3 is larger than the distance from the inner side surface of the tail part of the outer claw pole yoke part 5-2 to the center point of the rotor 3, and the upper half part of the outer claw pole yoke part 5-2 inclines towards the outer side of the rotor 3 and is twisted integrally.
The inner claw pole ring 4-1 and the outer claw pole ring 5-1 are arranged in a concentric circle mode, a gap is formed between the inner claw pole ring 4-1 and the outer claw pole ring 5-1 on the same horizontal plane, the annular groove 9 is arranged on the end cover 1, the opening is downward, and the annular groove 9 is located right above the gap.
The end cover 1 is provided with an annular groove 9, vent holes 10 are uniformly distributed at the position of the annular groove 9 on the upper end face of the end cover 1, air entering the annular groove 9 conveniently goes out of the vent holes 10, an excitation winding 2 and a moving sheet 11 are arranged in the annular groove 9, one end of the moving sheet 11 is in contact connection with the outer wall in the annular groove 9, the other end of the moving sheet is in contact connection with the excitation winding 2 through a regulating rod 12, the excitation winding 2 is arranged on the inner wall side in the annular groove 9, the regulating rod 12 is conductive, a winding lead-out wire is connected, the moving sheet 11 is not magnetic and non-conductive, has certain weight and can move up and down.
The movable piece 11 has a certain weight, which means that the movable piece 11 moves only when the wind reaches a certain intensity, but the movable piece 11 is not blown as long as a little wind exists, so that the movable piece 11 can be ensured to move up and down stably.
The excitation winding 2 is formed by winding an excitation coil, each excitation coil is provided with a switching point 13, all the switching points 13 are on the same vertical line and correspond to the adjusting rod 12, one end of the adjusting rod 12 is horizontally connected with the corresponding switching point 13 in a contact mode, and the other end of the adjusting rod is fixedly connected with the moving piece 11.
Remove piece 11 and be annular removal piece 11, and the cover is in ring channel 9, the equipartition has T type recess 14 on the outer wall in the ring channel 9, the equipartition has the T type arch 15 corresponding with T type recess 14 on the one end circumference of keeping away from regulating rod 12 on the removal piece 11, T type arch 15 sets up in T type recess 14, T type arch 15 can reciprocate in T type recess 14, under the effect of external force, removal piece 11 can reciprocate in ring channel 9, when removal piece 11 removes, removal piece 11 drives regulating rod 12 and switches between switching point 13, in order to change the winding number of turns in the access circuit.
One end of the T-shaped groove 14, which is far away from the upper end face of the end cover 1, is provided with a sealing cover, the adjusting rod 12 and the moving piece 11 are of an integrated structure, under the action of no external force, the moving piece 11 and the adjusting rod 12 can return to the lowest end of the T-shaped groove 14, namely, the sealing cover, and the adjusting rod 12 is in contact connection with the corresponding switching point 13 at the lowest part.
When the direct current excitation circuit works, a constant direct current is led out from a stator armature winding through a rectifier module by the direct current excitation winding 2 or is directly led in from the outside of the motor, after the motor is started, the outer claw pole 5 can generate wind power towards the direction of the end cover 1 and blow the wind power to the moving piece 11 and the adjusting rod 12 in the annular groove 9, when the self gravity of the moving piece 11 and the adjusting rod 12 is smaller than the received wind power, the moving piece 11 and the adjusting rod 12 at the lowest position synchronously and vertically move upwards, the wind power moves upwards to the position where the gravity of the received wind power is balanced with the gravity of the moving piece 11 and the gravity of the adjusting rod 12 again and stops, at the moment, the adjusting rod 12 can be connected with a switching point 13 which is closest to the adjusting rod 12 on the direct current excitation winding 2, the number of turns of the direct current excitation winding 2 connected into the circuit is different, the number of turns of the direct current excitation winding 2 connected into the circuit is smaller, and the axial excitation is gradually smaller, the main air gap magnetic field gradually weakens;
after the rotating speed of the motor is reduced, the wind power is reduced, the moving piece 11 and the adjusting rod 12 synchronously and vertically move downwards under the action of gravity, the moving piece stops after moving downwards to the position where the wind power is balanced with the gravity of the moving piece 11 and the gravity of the adjusting rod 12, the adjusting rod 12 can be connected with a switching point 13 which is closest to the adjusting rod 12 on the direct current excitation winding 2, the number of turns of the connected direct current excitation winding 2 is different at different switching points 13, the more downwards the number of turns of the connected direct current excitation winding 2 is, the axial excitation magnetic flux is gradually increased, and the main air gap magnetic field is gradually increased.
Example 2: different from the embodiment 1, the outer claw pole ring 5-1 has a regular circular ring structure outside and a pentagonal structure inside, so that the outer claw pole 5 can have better magnetic conductivity, and the structure can fully exert the upward wind generated by the outer claw pole yoke part 5-2.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (7)
1. The utility model provides a unilateral axial magnetic field modulation device of vertical hybrid excitation motor, includes end cover, excitation winding, claw utmost point and rotor, the end cover with be provided with between the rotor the claw utmost point, the claw utmost point includes interior claw utmost point and outer claw utmost point, be provided with ring channel, characterized by on the end cover: the upper end face of the end cover is uniformly provided with vent holes at the annular groove, the annular groove is internally provided with the excitation winding and the moving sheet, one end of the moving sheet is in contact connection with the outer wall in the annular groove, the other end of the moving sheet is in contact connection with the excitation winding through an adjusting rod, and the excitation winding is arranged on the inner wall side in the annular groove.
2. The single-side axial flux regulating device of the vertical hybrid excitation motor as claimed in claim 1, wherein: the excitation winding is formed by winding an excitation coil, each excitation coil is provided with a switching point, all the switching points are on the same vertical line, one end of the adjusting rod is horizontally connected with the corresponding switching point in a contact mode, and the other end of the adjusting rod is fixedly connected with the moving piece.
3. The single-side axial flux regulating device of the vertical hybrid excitation motor as claimed in claim 2, wherein: the utility model discloses a switch, including the regulating rod, the ring channel is equipped with the regulating rod, the regulating rod is equipped with the T type recess on the outer wall, the regulating rod is equipped with the T type arch on the one end circumference, the T type arch sets up in the T type recess, the T type arch can reciprocate in the T type recess, under the effect of external force, the removal piece can reciprocate in the ring channel when removing the piece and removing, it drives to remove the piece the regulating rod is in switch between the switching point to change the winding number of turns in the access circuit.
4. The single-side axial flux regulating device of the vertical hybrid excitation motor as claimed in claim 3, wherein: the T-shaped groove is provided with a sealing cover at one end far away from the upper end face of the end cover, the adjusting rod and the moving piece are of an integrated structure, under the action of no external force, the moving piece and the adjusting rod can return to the lowest end of the T-shaped groove by means of self gravity, and the adjusting rod is in point contact connection with the switching point at the corresponding lowest part.
5. The single-side axial flux regulating device of the vertical hybrid excitation motor as claimed in claim 4, wherein: the inner claw utmost point includes inner claw utmost point ring sum inner claw utmost point yoke portion, outer claw utmost point includes outer claw utmost point ring sum outer claw utmost point yoke portion, the shape of inner claw utmost point yoke portion is ordinary arc form curved plate, its radian with the radian of inner claw utmost point ring is unanimous, outer claw utmost point yoke portion is the arc form curved plate of distortion, can produce with the rotor terminal surface vertically to the wind of end cover direction.
6. The single-side axial flux regulating device of the vertical hybrid excitation motor as claimed in claim 5, wherein: the inner claw pole ring and the outer claw pole ring are arranged in a concentric circle mode and are on the same horizontal plane, a gap is formed between the inner claw pole ring and the outer claw pole ring, and the annular groove is located right above the gap.
7. The single-sided axial flux regulating device of the vertical hybrid excitation motor as claimed in any one of claims 1 to 6, wherein: the direct current excitation winding leads out a constant direct current from a stator armature winding through a rectifier module or directly leads in a constant direct current from the outside of the motor, after the motor is started, an outer claw pole can generate a wind force towards the direction of an end cover and blows to the moving piece and the adjusting rod in the annular groove, when the self gravity of the moving piece and the adjusting rod is smaller than the wind force borne by the motor, the moving piece and the adjusting rod which are positioned at the lowest part synchronously and vertically move upwards and stop after the wind force borne by the moving piece and the adjusting rod reaches the balanced position again, at the moment, the adjusting rod can be connected with a switching point which is closest to the adjusting rod on the direct current excitation winding, the number of turns of the direct current excitation winding which is connected into the circuit is different, the number of turns of the direct current excitation winding which is connected into the circuit is more upwards, and the axial excitation magnetic flux is gradually reduced, the main air gap magnetic field gradually weakens;
after the rotating speed of the motor is reduced, wind power is reduced, the moving piece and the adjusting rod synchronously vertically move downwards under the action of gravity, the moving piece and the adjusting rod synchronously move downwards to the position where the wind power is balanced with the gravity of the moving piece and the adjusting rod, the adjusting rod can be connected with a switching point on the direct current excitation winding, which is closest to the adjusting rod, at different switching points, the number of turns of the direct current excitation winding connected into the circuit is different, the number of turns of the direct current excitation winding connected into the circuit is more downwards, the axial excitation magnetic flux is gradually increased, and the main air gap magnetic field is gradually increased.
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| CN202210081144.9A CN114421681A (en) | 2022-01-24 | 2022-01-24 | Unilateral axial magnetic adjustment device of vertical hybrid excitation motor |
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| CN202210081144.9A CN114421681A (en) | 2022-01-24 | 2022-01-24 | Unilateral axial magnetic adjustment device of vertical hybrid excitation motor |
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| CN2105134U (en) * | 1991-11-27 | 1992-05-20 | 郭占生 | Voltage-stablizing permanent magnet dynamo |
| EP1202431A1 (en) * | 2000-10-25 | 2002-05-02 | Denso Corporation | Rotor of revolving field type AC generator |
| CN101946390A (en) * | 2008-02-13 | 2011-01-12 | 三菱电机株式会社 | Rotating electrical machine |
| US20120212096A1 (en) * | 2011-02-21 | 2012-08-23 | Mitsubishi Electric Corporation | Rotary electric machine |
| CN107276356A (en) * | 2017-07-17 | 2017-10-20 | 华中科技大学 | A kind of axial magnetic flux brushless hybrid excitation motor |
| CN112968542A (en) * | 2021-02-03 | 2021-06-15 | 贵州航天林泉电机有限公司 | Brushless claw-pole motor structure |
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2022
- 2022-01-24 CN CN202210081144.9A patent/CN114421681A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2105134U (en) * | 1991-11-27 | 1992-05-20 | 郭占生 | Voltage-stablizing permanent magnet dynamo |
| EP1202431A1 (en) * | 2000-10-25 | 2002-05-02 | Denso Corporation | Rotor of revolving field type AC generator |
| CN101946390A (en) * | 2008-02-13 | 2011-01-12 | 三菱电机株式会社 | Rotating electrical machine |
| US20120212096A1 (en) * | 2011-02-21 | 2012-08-23 | Mitsubishi Electric Corporation | Rotary electric machine |
| CN107276356A (en) * | 2017-07-17 | 2017-10-20 | 华中科技大学 | A kind of axial magnetic flux brushless hybrid excitation motor |
| CN112968542A (en) * | 2021-02-03 | 2021-06-15 | 贵州航天林泉电机有限公司 | Brushless claw-pole motor structure |
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