CN103944311A - Magnetic field regulating method for permanent magnet motor and permanent magnet motor high in magnetism regulation capacity - Google Patents
Magnetic field regulating method for permanent magnet motor and permanent magnet motor high in magnetism regulation capacity Download PDFInfo
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- CN103944311A CN103944311A CN201410171133.5A CN201410171133A CN103944311A CN 103944311 A CN103944311 A CN 103944311A CN 201410171133 A CN201410171133 A CN 201410171133A CN 103944311 A CN103944311 A CN 103944311A
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Abstract
The invention discloses a magnetic field regulating method for a permanent magnet motor and a permanent magnet motor high in magnetism regulation capacity and belongs to the field of permanent magnet motors. According to the permanent magnet motor high in magnetism regulation capacity, a linear bearing is arranged between the outside of a motor housing and a base, end covers are arranged on the two sides of the motor housing, a main shaft is fixed to the end covers on the two sides through swivel bearings, the end cover on one side is provided with an auxiliary moving mechanism, the main shaft and the swivel bearings are relatively static in the axial direction, the motor housing and the end covers can move by a certain range in the axial direction through the linear bearing, the moving range is controlled by the auxiliary moving mechanism so that the center line of a stator can be deviated from the center line of a rotor, coupling between the body of the stator and the rotor is changed, and the air gap effective permanent magnetic flow of the permanent magnet motor is changed. According to the magnetic field regulating method for the permanent magnet motor and the permanent magnet motor high in magnetism regulation capacity, the permanent magnet motor can be controlled accurately, the permanent magnet motor is extremely convenient to use no matter whether the permanent magnet motor serves as an electric motor or an electric generator, and the working efficiency is high.
Description
Technical field
The magnetic field regulating method and the lofty tone magnetic energy power magneto that the invention provides a kind of magneto, belong to magneto field.
Background technology
Magneto is with respect to electro-magnetic motor, and owing to adopting, permanent magnet excitation has efficiently, high torque density and High Power Factor, have significant application value, but the permanent magnetic field of magneto is difficult to adjusting and has limited its range of application.For example, as a kind of permanent magnet brushless electromotor of magneto, drive in application at electric automobile, meet efficient, the low volume weight requirement of electric automobile to drive system although there is efficient, high torque density feature, but owing to being difficult to regulate permanent magnetic field, be difficult to meet electric automobile low speed high torque and have simultaneously the driving requirement of high-speed cruising ability, have influence on the extensive use of this kind of motor in fields such as electric automobiles; Equally as two magneto alternator of magneto, owing to can not regulating permanent magnetic field, there is very high generator inherent voltage regulation, only have by the mode of rectification and inversion and realize the requirement of normal generator voltage regulation, cost and volume weight that this has increased generator system, also reduced its operational reliability.
Therefore, how to regulate the magnetic field of magneto, the adjustable magnetic ability that how to improve magneto is the emphasis of its research and development always.In sine wave permanent magnet brushless motor, by motor stator three-phase symmetrical electric current process d, q becomes friendship, direct-axis current, by regulating the size of direct-axis current to regulate the size in air gap permanent magnet magnetic field, if motor has high salient pole rate and high d-axis inductance, there is the ability that regulates relatively preferably air gap permanent magnet magnetic field, but high d-axis inductance and high salient pole rate itself are exactly contradiction, not magnetic conduction and there is high coercive force of the rare-earth permanent magnet that simultaneously permanent magnet particularly generally adopts at present itself, change the very difficulty of motor gas-gap magnetic field that permanent magnet produces, need great armature d-axis demagnetizing current, this is difficult to realize in practice, and direct-axis current itself is reactive current, the increase of direct-axis current, reduce the power factor of electric system, increase the capacity of system, in square wave permanent magnetic brushless electric machine, by the each phase winding of shorting advance, also can regulate the air gap permanent magnet magnetic field flux of motor, but can produce very large motor oscillating, have influence on the performance of motor, and in permanent magnet brush motor, air gap permanent magnet magnetic field cannot regulate at all.
Can find out, the permanent magnetic field of current variant type magneto, or can not regulate, or regulating difficulty, adjustable magnetic amplitude is little, simultaneously motor performance variation after adjustable magnetic.
Chinese patent application CN03805520.1 discloses a kind of brushless permanent magnet motor with fixed radial air gap, makes it with the rotating speed operation far above normal maximal rate by reducing effective magnetic pole intensity.Between p-m rotor and constant velocity bearing, the increase of axially displaced amount should reduce the corresponding increase of rotating speed and torque phase.P-m rotor axial dipole field, so that axially displaced between rotor magnetic pole and stator to be provided, reduces to offer effective magnetic pole intensity or the magnetic flux of stator.Integral constant speed linear bearing is for connecting the motor rotary shaft of movable rotor and fixed position.The magnetic force that thrust bearing drives magnet rotor opposing to attract is mutually offset to stator.Utilize constant speed linear bearing to make motor rotary shaft in the time that rotor-position is offset, radially support bearing, position coder, cooling fan, and output coupling remains on fixed position.First this mandate patent of invention is the object that reaches the dislocation of rotor center line by moving axially rotor, rotor rotation itself, and then move axially, this work, manufacture to motor brings very large difficulty; Secondly, this mandate patent of invention does not provide the method for designing of motor itself.
Summary of the invention
According to above deficiency of the prior art, problem to be solved by this invention is: provide one to make magneto control accurate, connect easy to use, by mechanical method, by the skew of magneto stator and rotor longitudinal center line, reduce the magnetic coupling between stator and rotor, thereby indirectly reduced the effective permanent magnet flux of air gap of motor, reach the magnetic field regulating method of the object that regulates permanent magnetic field, and lofty tone magnetic energy power magneto.
The technical solution adopted for the present invention to solve the technical problems is: a kind of magnetic field regulating method of magneto, comprise the stator of magneto, rotor, main shaft, swivel bearing, casing, both sides end cap and basis, rotor relatively rotates by swivel bearing and stator, it is characterized in that: between casing outside and basis, linear bearing is set, end cap is arranged on casing both sides, main shaft is fixed on two side ends by swivel bearing and covers, one side end cap arranges auxiliary moving mechanism, main shaft is relative static vertically with swivel bearing, casing and end cap have certain moving range vertically by linear bearing, auxiliary moving mechanism controls moving range, stator center line and rotor centerline are offset, change the coupling between stator body and rotor, change the effective permanent magnet flux of air gap of magneto.
As magneto, in stator and rotor, one permanent magnet formation p-m rotor or permanent-magnet stator are installed, another just becomes armature, and armature comprises armature winding and armature core.P-m rotor (or permanent-magnet stator) is identical with common magneto, and same armature is also identical with common magneto.In the time that p-m rotor (or permanent-magnet stator) aligns with armature center line, permanent magnetic field and armature are coupled completely, the permanent magnetism air-gap flux maximum of motor, in the time that both center lines depart from, the effective permanent magnet flux of air gap of motor reduces, when permanent-magnet stator (or p-m rotor) is not axially having when overlapping with armature, the effective permanent magnetism air gap of the air gap magnetic in armature, with reaching minimum, approximates 0.By auxiliary moving mechanism make casing together with end cap with respect to main axle moving, can make the effective permanent magnet flux amplitude of variation of air gap of motor very large, met the adjustable magnetic requirement of variant magneto.It is flexible that main shaft is connected and fixed mode, is not subject to applying working condition and load effect.
This method can be that rotor maintains static vertically, and stator is offset by linear bearing vertically, realizes magnetic-coupled adjustment between stator and rotor; Can be outer-rotor structure, outside, stator be in inside for rotor, to outer-rotor structure motor, can be equally that rotor axial position is motionless and stator moves along axis, can be also that stator shaft orientation position is motionless and rotor moves vertically.
Wherein:
On described main shaft, fix p-m rotor, the inner fixed stator of casing.Be applicable to external stator motor.
Fixed stator on described main shaft, the inner fixing p-m rotor of casing.Be applicable to external rotor electric machine.
This method is applicable to permanent magnetic brushless, forms and comprises sine-wave permanent magnet synchronous motor and square wave permanent magnetic brshless DC motor, and the former can also can be for generator for motor, and the latter is mainly used in motor.To permanent magnetic brushless, rotor is placed permanent magnet, and therefore stator is armature, can adopt inner rotor core also can adopt outer-rotor structure.The rotor of permanent magnetic brushless or stator axially have certain moving range, stator or rotor one of them can move by linear bearing vertically, stator and rotor longitudinal center line is departed from, regulate the object in air gap permanent magnet magnetic field thereby reach.Rotor longitudinal center line more departs from aligned position, and the air gap permanent magnet magnetic field of rotor coupling is just less, and the effective permanent magnet flux of air gap of motor is just lower, concerning generator, stator winding permanent-magnetic electromotive force is just lower, and concerning motor, the weak magnetic tachometer of motor is just higher.
This method is also applicable to permanent magnet brush direct current machine, and now stator is installed permanent magnetism magnetic pole, and rotor is armature, and generally adopts inner rotor core.Stator can move vertically by linear bearing, thereby realizes departing from of stator and rotor axial center line, realizes the object that the effective permanent magnet flux of motor gas-gap regulates, and meets the performance requirement that permanent magnet brush direct current machine regulates permanent magnetism air-gap field to realize.
Described moving range refers to that stator and rotor centerline overlap to the offset distance that stator and rotor edge depart from completely.
Described moving range is 0～(stator thickness+rotor thickness)/2.
A kind of lofty tone magnetic force magneto that uses above-mentioned magnetic field regulating method, comprise stator, rotor, main shaft, swivel bearing, casing, both sides end cap and the basis of magneto, rotor relatively rotates by swivel bearing and stator, it is characterized in that: between casing outside and basis, linear bearing is set, end cap is fixedly installed on casing both sides, main shaft is fixed on two side ends by swivel bearing and covers, end cap central authorities arrange tubular slideway, swivel bearing is arranged on slideway, and the end cap of a side contrary to main shaft arranges auxiliary moving mechanism.
Main shaft is relative static vertically with swivel bearing, casing and end cap have certain moving range vertically by linear bearing, auxiliary moving mechanism controls moving range, stator center line and rotor centerline are offset, change the coupling between stator body and rotor, change the effective permanent magnet flux of air gap of magneto.
On described main shaft, fix p-m rotor, the inner fixed stator of casing.
The described outside end cap arranged outside of casing tooth bar, auxiliary moving mechanism comprises control motor, gear, gear is fixed on the output shaft of controlling motor, wheel and rack engagement.Control motor and rotarily drive gear, wheel and rack transmission, moves horizontally casing, realizes stator center line and rotor centerline and is offset.Main shaft, as output, does not produce horizontal displacement, connection load is set simple, easy for installation, and transmission efficiency is high.
Fixed stator on described main shaft, the inner fixing p-m rotor of casing.
The described outside end cap arranged outside of casing annular gear ring, auxiliary moving mechanism comprises control motor, gear, and gear is fixed on the output shaft of controlling motor, and gear engages with annular gear ring, when annular gear ring rotation, realizes and moving axially.Gear drive is moved end cap vertically, is applicable to outer-rotor structure.
Compared with prior art, the magnetic field regulating method of this magneto and the beneficial effect that magnetic force magneto has are to a high-profile: by regulating permanent magnet motor stator or rotor axial position, realize departing from of stator and rotor axial center line, thereby realize the magnetic coupling adjustment between rotor, indirectly realized the adjusting of the effective permanent magnet flux of motor gas-gap.Concrete upper:
(1) regulate the effective permanent magnetic field of air gap of magneto by the relative axial position of mobile stator or rotor, there is very large adjustable magnetic ability, avoid sine wave permanent magnet brushless electric machine to carry out adjustable magnetic by very large d-axis armature supply, efficient, high power density and the High Power Factor of motor are ensured, avoid square wave permanent magnetic brushless electric machine to carry out adjustable magnetic and cause the deterioration of motor performance by shorting advance each phase current, realized equally the object of permanent magnet DC motor adjustable magnetic;
(2) moving to axial of stator of the present invention and rotor is the method by electronic or manual, realizes by linear bearing.
(3) lofty tone magnetic energy power magneto of the present invention is having very high weak magnetism speed expansion ability when the motor, and the utmost point is suitable for low speed high torque and has simultaneously the occasion of the little torque service requirement of high speed, as electric automobile drives and machine tool chief axis drives;
(4) lofty tone magnetic energy power magneto of the present invention has good voltage stability when as generator, has avoided common permanent magnet generator must adopt commutation inversion to meet the performance requirement of voltage stability, has low cost and efficient advantage.
Brief description of the drawings
Fig. 1 is the torque rotary speed characteristic curve of common magneto torque rotary speed characteristic curve and load request during as motor;
Fig. 2 is the structure chart of the present invention while being used as internal rotor permanent-magnetic brushless motor;
Fig. 3 is the schematic diagram of stator 1 center line in Fig. 1 (be equivalent to stator core 1-1 center line, lower with) while overlapping with rotor 2 center lines;
Fig. 4 is schematic diagram when stator 1 left side overlaps with rotor 2 right sides in Fig. 1;
Fig. 5 be in Fig. 1 stator 1 with rotor 2 between the centre position of Fig. 3 and Fig. 4 schematic diagram;
Fig. 6 is test characteristic curve of the present invention;
Wherein: 1-1 is stator core, 1-2 is stator winding, and 2 is p-m rotor, and 3 is motor left end cap, and 4 is casing, and 5 is right end cap, and 6 is swivel bearing, and 7 is auxiliary moving mechanism, and 8 is linear bearing, and 9 is basis.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described:
Embodiment 1:
As shown in Figure 1, the peak torque speed characteristic curve that wherein ABCr is load request, and AB section is Qi Daheng torque section, BCr is Qi Daheng power section; ABCs is for common permanent magnet motor is only for the Daheng torque that meets load moves the torque rotary speed characteristic curve having; ABxCr meets the peak torque speed characteristic curve that output-constant operation must have for the Daheng torque operation that common magneto not only meets load simultaneously.
Common permanent magnet brushless electromotor has the torque rotary speed characteristic curve as shown in ABCs in Fig. 1, and wherein AB section is permanent torque target phase, and BCs is weak magnetism speed expansion section, n
bfor turnover rotating speed, n
smaxfor the maximum speed that motor can reach, because common permanent magnetic brushless permanent magnetic field is difficult to regulate, therefore weak magnetism speed expansion section is relatively short, i.e. n
smaxcompare n
bwhat increase is not a lot.And numerous loads needs low speed high torque to need high-speed cruising as electric automobile drives load simultaneously, need the weak magnetism speed expansion section grown very much, as figure BCr section, i.e. n
rmaxcompare n
bmuch larger, that is to say, if common permanent magnetic brushless just meets the permanent torque service requirement of load, can not meet the permanent power weak magnetism speed expansion requirement of load simultaneously.Obviously common permanent magnet synchronous motor wants to meet permanent torque request and the permanent power requirement of load simultaneously, meets dynamic characteristic ABC
r, only have the maximum power that increases motor, thereby increase the capacity of inverter, make motor there is the torque rotary speed characteristic curve of ABxCr, this has increased the capacity of inverter and cost, volume greatly, only has electric system to have the torque rotary speed characteristic curve of ABxCr, could meet load ABC
rload characteristic.
A kind of magnetic field regulating method of magneto, comprise the stator of magneto, rotor, main shaft, swivel bearing, casing, both sides end cap and basis, rotor relatively rotates by swivel bearing and stator, it is characterized in that: between casing outside and basis, linear bearing is set, end cap is arranged on casing both sides, main shaft is fixed on two side ends by swivel bearing and covers, one side end cap arranges auxiliary moving mechanism, main shaft is relative static vertically with swivel bearing, casing and end cap have certain moving range vertically by linear bearing, auxiliary moving mechanism controls moving range, stator center line and rotor centerline are offset, change the coupling between stator body and rotor, change the effective permanent magnet flux of air gap of magneto.
As magneto, in stator and rotor, one permanent magnet formation p-m rotor or permanent-magnet stator are installed, another just becomes armature, and armature comprises armature winding and armature core.P-m rotor (or permanent-magnet stator) is identical with common magneto, and same armature is also identical with common magneto.In the time that p-m rotor (or permanent-magnet stator) aligns with armature center line, permanent magnetic field and armature are coupled completely, the permanent magnetism air-gap flux maximum of motor, in the time that both center lines depart from, the effective permanent magnet flux of air gap of motor reduces, when permanent-magnet stator (or p-m rotor) is not axially having when overlapping with armature, the effective permanent magnetism air gap of the air gap magnetic in armature, with reaching minimum, approximates 0.By auxiliary moving mechanism make casing together with end cap with respect to main axle moving, can make the effective permanent magnet flux amplitude of variation of air gap of motor very large, met the adjustable magnetic requirement of variant magneto.It is flexible that main shaft is connected and fixed mode, is not subject to applying working condition and load effect.
Embodiment 2:
On the basis of embodiment 1, on main shaft, fix p-m rotor, the inner fixed stator of casing.Be applicable to external stator motor.Can be permanent magnetic brushless, can be also permanent magnet brush direct current machine, is now generally inner rotor core, and stator installation permanent magnet, and rotor is armature.At this moment, general rotor maintains static vertically, and stator can move vertically.
Embodiment 3:
On the basis of embodiment 1, fixed stator on main shaft, the inner fixing p-m rotor of casing.Be applicable to external rotor electric machine.
Embodiment 4:
On the basis of embodiment 1, this method for permanent magnetic brushless, forms and comprises sine-wave permanent magnet synchronous motor and square wave permanent magnetic brshless DC motor, and the former can also can be for generator for motor, and the latter is mainly used in motor.To permanent magnetic brushless, rotor is placed permanent magnet, and therefore stator is armature, can adopt inner rotor core also can adopt outer-rotor structure.
The rotor of permanent magnetic brushless or stator axially have certain moving range, stator or rotor one of them can move by linear bearing vertically, stator and rotor longitudinal center line is departed from, regulate the object in air gap permanent magnet magnetic field thereby reach.Rotor longitudinal center line more departs from aligned position, and the air gap permanent magnet magnetic field of rotor coupling is just less, and the effective permanent magnet flux of air gap of motor is just lower, concerning generator, stator winding permanent-magnetic electromotive force is just lower, and concerning motor, the weak magnetic tachometer of motor is just higher.
Embodiment 5:
On the basis of embodiment 1, this method is for permanent magnet brush direct current machine, and now stator is installed permanent magnetism magnetic pole, and rotor is armature, and generally adopts inner rotor core.Stator can move vertically by linear bearing, thereby realizes departing from of stator and rotor axial center line, realizes the object that the effective permanent magnet flux of motor gas-gap regulates, and meets the performance requirement that permanent magnet brush direct current machine regulates permanent magnetism air-gap field to realize.
Embodiment 6:
On the basis of embodiment 4, in the time that this method is used for permanent magnet motor, in the time carrying out design of electrical motor, the design of aliging with rotor 2 center lines with stator 1 center line, meet the low speed high torque service requirement of motor, make stator center line and rotor centerline skew by this method, realize weak magnetism speed expansion operation, can both meet the high rotating speed service requirement of load.
Embodiment 7:
On the basis of embodiment 4, this method can be for having the permanent magnet generator of good voltage regulation performance.Shown in Fig. 2, can be considered as having the magneto alternator of good voltage regulation performance.Concerning generator, basic performance requirement is voltage stability, and, along with the increase of load, output voltage will remain unchanged, or in a very little mobility scale.Common magneto alternator is because air gap permanent magnet magnetic field is non-adjustable, and therefore its voltage stability is to realize by the commutation inversion of output voltage, increased system cost, reduced the efficiency of system.When the present invention is used for magneto alternator, can, along with the size of load, by regulating the relative position of stator 1 center line and rotor 2 center lines, change the effective permanent magnet flux of air gap of motor, thereby the Permanent Magnet and Electric kinetic potential that changes stator armature winding, can ensure that output voltage is constant.
In the time that this method is applied to permanent magnet generator and keeps output voltage constant, overlap with rotor 2 center lines with stator 1 center line and design the specified running status of motor, now can output rated voltage, along with the reduction of load, progressively make stator 1 center line depart from rotor 2 center lines, thereby reduce the effective permanent magnet flux of air gap of motor, reduce the Permanent Magnet and Electric kinetic potential of armature, ensure the constant of output voltage.
Embodiment 8:
On the basis of above embodiment, moving range refers to that stator and rotor centerline overlap to the offset distance that stator and rotor edge depart from completely.For example, moving range is 0～(stator thickness+rotor thickness)/2.
Embodiment 9:
A kind of lofty tone magnetic force magneto that uses above-described embodiment 1 magnetic field regulating method, comprise stator, rotor, main shaft, swivel bearing, casing, both sides end cap and the basis of magneto, rotor relatively rotates by swivel bearing and stator, it is characterized in that: between casing outside and basis, linear bearing is set, end cap is fixedly installed on casing both sides, main shaft is fixed on two side ends by swivel bearing and covers, end cap central authorities arrange tubular slideway, swivel bearing is arranged on slideway, and the end cap of a side contrary to main shaft arranges auxiliary moving mechanism.
Main shaft is relative static vertically with swivel bearing, casing and end cap have certain moving range vertically by linear bearing, auxiliary moving mechanism controls moving range, stator center line and rotor centerline are offset, change the coupling between stator body and rotor, change the effective permanent magnet flux of air gap of magneto.
Embodiment 10:
As shown in Figure 2, on main shaft, fix p-m rotor 2, the inner fixed stator main body 1 of casing 4.Stator core 1-1 and stator winding 1-2 have formed stator body 1, stator body 1, left end cap 3, casing 4, right end cap 5 have formed the stator of motor, p-m rotor 2 is by swivel bearing 6 with respect to stator rotation, and auxiliary moving mechanism 7 makes stator move axially along basis 9 by linear bearing 8.
By mobile stator, make stator center line (being equivalent to stator core 1-1 center line) and rotor 2 disalignments, thereby reduce the coupling of rotor and stator, reduce the effective permanent magnet flux of motor gas-gap, reach the object of permanent magnetic brushless weak magnetism speed expansion, thereby make motor there is the torque rotary speed characteristic curve as ABCr in Fig. 1, thereby under the prerequisite that does not increase motor maximum power and inverter capacity, meet the driving requirement of load.
In the time that stator 1 center line overlaps with rotor 2 center lines, as shown in Figure 3, the effective permanent magnet flux maximum of motor gas-gap, now machine operation, in AB section as shown in Figure 1, realizes the permanent torque operation of motor, at B point, motor reaches maximum power, and inverter Maximum Power Output, in the time that stator 1 center line departs from rotor 2 center line gradually, the effective permanent magnet flux of air gap diminishes, thereby motor is moved along BCr weak magnetism speed expansion.In the time that stator left side arrives rotor 2 right part face, as shown in Figure 4, motor gas-gap useful flux minimum, approaches 0, can make motor reach very high rotating speed (n
rmax); As shown in Figure 5, stator 1 center line departs from rotor 2 center lines, and the effective permanent magnet flux of motor gas-gap is less than magnetic flux as shown in Figure 3, is greater than magnetic flux as shown in Figure 4, and therefore the running speed of motor is also just between n
band n
rmaxbetween.
Embodiment 11:
On the basis of embodiment 9 and/or embodiment 10, the outside end cap 5 arranged outside tooth bars of casing 4, auxiliary moving mechanism 7 comprises control motor, gear, gear is fixed on the output shaft of controlling motor, wheel and rack engagement.Control motor and rotarily drive gear, wheel and rack transmission, moves horizontally casing, realizes stator center line and rotor centerline and is offset.Main shaft, as output, does not produce horizontal displacement, connection load is set simple, easy for installation, and transmission efficiency is high.
Embodiment 12:
On the basis of embodiment 9, fixed stator on main shaft, the inner fixing p-m rotor of casing.
Embodiment 13:
On the basis of embodiment 9 and/or embodiment 12, the outside end cap arranged outside of casing annular gear ring, auxiliary moving mechanism comprises control motor, gear, gear is fixed on the output shaft of controlling motor, gear engages with annular gear ring, when annular gear ring rotation, realizes and moving axially.Gear drive is moved end cap vertically, is applicable to outer-rotor structure.
Experimental results show that:
Be illustrated in figure 6 5kW, the implementation result of 1500r/min magneto (employing inner rotor core) in the time adopting patent of the present invention, wherein normal 5kW magneto has the torque rotary speed curve of ABCs in figure, at Cs point, reach the highest running speed (the highest running speed is 2400r/min), but output torque has reduced to 0, therefore there is no power stage; Adopting after patent of the present invention, AB section remains unchanged, but high regime becomes BCr from BCs, and the maximum speed of motor reaches 4350r/min, the more important thing is the power stage that now also has 8Nm, and now the power output of motor also has 3.7kW.By adopting patent of the present invention, obtain good high-speed cruising effect, not only expand speed adjustable range, and also had at a high speed torque output.
Claims (10)
1. the magnetic field regulating method of a magneto, comprise the stator of magneto, rotor, main shaft, swivel bearing, casing, both sides end cap and basis, rotor relatively rotates by swivel bearing and stator, it is characterized in that: between casing outside and basis, linear bearing is set, end cap is arranged on casing both sides, main shaft is fixed on two side ends by swivel bearing and covers, one side end cap arranges auxiliary moving mechanism, main shaft is relative static vertically with swivel bearing, casing and end cap have certain moving range vertically by linear bearing, auxiliary moving mechanism controls moving range, stator center line and rotor centerline are offset, change the coupling between stator body and rotor, change the effective permanent magnet flux of air gap of magneto.
2. the magnetic field regulating method of magneto according to claim 1, is characterized in that: on described main shaft, fix p-m rotor, the inner fixed stator of casing.
3. the magnetic field regulating method of magneto according to claim 1, is characterized in that: fixed stator on described main shaft, the inner fixing p-m rotor of casing.
4. the magnetic field regulating method of magneto according to claim 1, is characterized in that: described moving range refers to that stator and rotor centerline overlap to the offset distance that stator and rotor edge depart from completely.
5. according to the magnetic field regulating method of the magneto described in claim 1 or 4, it is characterized in that: described moving range is 0～(stator thickness+rotor thickness)/2.
6. a lofty tone magnetic force magneto, comprise stator, rotor, main shaft, swivel bearing, casing, both sides end cap and the basis of magneto, rotor relatively rotates by swivel bearing and stator, it is characterized in that: between casing outside and basis, linear bearing is set, end cap is fixedly installed on casing both sides, and main shaft is fixed on two side ends by swivel bearing and covers, and end cap central authorities arrange tubular slideway, swivel bearing is arranged on slideway, and the end cap of a side contrary to main shaft arranges auxiliary moving mechanism.
7. lofty tone magnetic force magneto according to claim 6, is characterized in that: on described main shaft, fix p-m rotor, the inner fixed stator of casing.
8. according to the lofty tone magnetic force magneto described in claim 6 or 7, it is characterized in that: the described outside end cap arranged outside of casing tooth bar, auxiliary moving mechanism comprises control motor, gear, gear is fixed on the output shaft of controlling motor, wheel and rack engagement.
9. lofty tone magnetic force magneto according to claim 6, is characterized in that: fixed stator on described main shaft, the inner fixing p-m rotor of casing.
10. according to the lofty tone magnetic force magneto described in claim 6 or 7, it is characterized in that: the described outside end cap arranged outside of casing annular gear ring, auxiliary moving mechanism comprises control motor, gear, gear is fixed on the output shaft of controlling motor, gear engages with annular gear ring, when annular gear ring rotation, realizes and moving axially.
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| CN201410171133.5A CN103944311A (en) | 2014-04-26 | 2014-04-26 | Magnetic field regulating method for permanent magnet motor and permanent magnet motor high in magnetism regulation capacity |
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| CN201410171133.5A CN103944311A (en) | 2014-04-26 | 2014-04-26 | Magnetic field regulating method for permanent magnet motor and permanent magnet motor high in magnetism regulation capacity |
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| CN110635644A (en) * | 2019-10-23 | 2019-12-31 | 六安正辉优产机电科技有限公司 | Power increasing component of brushless permanent magnet motor |
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| CN110635649A (en) * | 2019-10-23 | 2019-12-31 | 六安正辉优产机电科技有限公司 | Speed regulation component of permanent magnet brushless motor |
| CN110635643A (en) * | 2019-10-23 | 2019-12-31 | 六安正辉优产机电科技有限公司 | Power increasing and speed increasing method of brushless permanent magnet motor |
| CN112072809A (en) * | 2020-08-24 | 2020-12-11 | 清华大学 | Permanent magnet rotating armature motor capable of adjusting magnetic field in mechanical mode |
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| WO2019081106A1 (en) * | 2017-10-23 | 2019-05-02 | Wabco Gmbh | Compressor assembly for operating a compressed air supply system, compressed air supply system, and vehicle |
| CN110635644A (en) * | 2019-10-23 | 2019-12-31 | 六安正辉优产机电科技有限公司 | Power increasing component of brushless permanent magnet motor |
| CN110635643A (en) * | 2019-10-23 | 2019-12-31 | 六安正辉优产机电科技有限公司 | Power increasing and speed increasing method of brushless permanent magnet motor |
| CN110635649A (en) * | 2019-10-23 | 2019-12-31 | 六安正辉优产机电科技有限公司 | Speed regulation component of permanent magnet brushless motor |
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| CN112994344A (en) * | 2021-02-04 | 2021-06-18 | 广州橙行智动汽车科技有限公司 | Motor, method for changing input current of motor, readable medium and automobile |
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| CN115962243A (en) * | 2022-12-13 | 2023-04-14 | 华中科技大学 | Axial flux permanent magnet hysteresis damper with adjustable air gap |
| CN115962243B (en) * | 2022-12-13 | 2023-11-07 | 华中科技大学 | Axial magnetic flux permanent magnet hysteresis damper with adjustable air gap |
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