CN105207435A - Single-winding low-cost high-power-density permanent magnet motor - Google Patents
Single-winding low-cost high-power-density permanent magnet motor Download PDFInfo
- Publication number
- CN105207435A CN105207435A CN201510695707.3A CN201510695707A CN105207435A CN 105207435 A CN105207435 A CN 105207435A CN 201510695707 A CN201510695707 A CN 201510695707A CN 105207435 A CN105207435 A CN 105207435A
- Authority
- CN
- China
- Prior art keywords
- stator
- permanent magnet
- rotor
- motor
- tooth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention discloses a single-winding low-cost high-power-density permanent magnet motor which is characterized by comprising a stator and a rotor, wherein the stator comprises a stator yoke composed of a stator back yoke and a plurality of stator slot yokes; a permanent magnet is arranged between the stator back yoke and each stator slot yoke; a stator tooth is arranged at each of the two ends of each stator slot yoke; an armature slot is formed between every two stator teeth; a set of armature winding is arranged in each armature slot; the rotor comprises a plurality of rotor teeth; a rotor slot is formed between every two adjacent rotors; a main air gap is formed between each rotor tooth and the corresponding stator teeth. The single-winding low-cost high power-density permanent magnet motor is simple in manufacturing technique and low in cost.
Description
Technical field
The present invention relates to a kind of permanent magnet motor, particularly relate to the low cost high powered density permanent magnetic motor of a kind of simplex winding.
Background technology
In recent years, along with the raising of permanent magnetic material resistance to elevated temperatures and the reduction of price, magneto obtains applying more widely in national defence, industrial and agricultural production and daily life etc., forward high-power, high performance and microminiaturized future development.The power of current magneto is from a few milliwatt to a few megawatt, and the large-scale magneto that range of application is drawn from toy motor, commercial Application to naval vessel, is widely applied in national economy, daily life, war industry, aerospace various aspects.Main application is as follows:
(1) household appliance technical field: comprise TV audio and video equipment, fan, air conditioner, food processor, cosmetic tool, lampblack absorber etc.
(2) computer and ancillary equipment field thereof: comprise computer (driver, fan etc.), printer, plotter, CD-ROM drive, CD writer etc.
(3) field of industrial production: comprise industrial drives device, material processing system, automation equipment, robot etc.
(4) automotive field: comprise permanent magnet starting motor, wiper motor, door-lock motor, seat lifting motor, sunshading ceiling motor, scavenging pump motor, recorder motor, glass lifting motor, radiator cooling fan motor, air conditioner motor, antenna lifting motor, Oil pump electrical machinery etc.
(5) public life field: comprise clock and watch, beauty treatment machinery, automatic vending machine, ATM, paper money counter etc.
(6) communications and transportation: comprise electric car, aircraft auxiliary equipment, naval vessel etc.
(7) space flight: comprise rocket, satellite, spaceship, space shuttle etc.
(8) national defence: comprise tank, guided missile, submarine, aircraft etc.
(9) medical treatment: comprise dental drill, artificial heart, medicine equipment etc.
(10) generate electricity: comprise wind power generation, cogeneration, miniature hydro-power generation, small-sized internal combustion generating set generator, and the pilot exciter etc. of high-rating generator.
Regular alternating current magneto is divided into following a few class usually: asynchronous starting permanent magnet synchronous motor, brushless, permanently excited direct current motor, speed governing permanent magnet synchronous motor.
Brshless DC motor, with substantially identical on speed governing permanent magnetic synchronous motor structure, stator be polyphase windings, rotor has permanent magnet, and their main distinction is that brshless DC motor realizes motor synchronizing according to rotor position information.Their advantage is: (1) eliminates brush-commutated device, and reliability improves; (2) loss produces primarily of stator, and radiating condition is good; (3) volume is little, lightweight.
Difference on asynchronous starting permanent magnet synchronous motor and speed governing permanent magnet synchronous motor structure is: the former rotor has the integral core of starting winding or having priming, can realize self-starting, can be incorporated into the power networks without the need to control system.
In addition, also have electric machine, electric machine needs supporting capacitor start and operation, and volume is heavy, and cost is high, and the efficiency of overall operation and power factor all lower.
Existing magneto winding Problems existing is mainly:
1, existing magneto winding is generally 3 phases, and stator slot number is many, winding inserting complex process, and manufacturing cost is high; Existing most of permanent magnet of permanent magnet motor is positioned on rotor, rotate with rotor during operation, permanent magnet need adopt special procedure to fix, manufacturing cost is high, especially, when motor speed is higher, permanent magnet is fixing more difficult, because permanent magnet is positioned on rotor, heat radiation difficulty during operation, temperature rise and the vibration caused due to rotor turns can cause permanent magnet mechanical structure to be damaged and irreversible demagnetization occurs.
2, existing magneto is generally three-phase; require that the power inversion circuit of motor at least needs 6 device for power switching; as IGBT or MOSFET etc.; and the drive circuit of corresponding this device for power switching of driving and protective circuit; make power of motor inverter circuit cost quite high, even reach two to three times of motor body cost, quantity of power switches increases and adds control circuit complexity; the possibility of device failure increases, and the reliability of runtime system reduces.
3, existing magneto is that permanent magnet is directly in the face of air gap mostly, need the permanent magnet adopting radial magnetizing, because when adopting parallel magnetization, motor every pole magnetic flux can significantly reduce, reduce exerting oneself and power density of motor, but radial magnetizing permanent magnetism body cost is high, the permanent magnet obtaining uniform radial magnetizing is very difficult.
4, when existing magneto manufactures, iron core consumption is large, and motor quality is large, and when motor runs, stock utilization is low.
Therefore, it is few to seek a kind of winding number of phases, and iron core consumption is few, and motor body manufacturing process is simple, and permanent magnet is positioned on stator, easy for installation, and cost is low, and power circuit switching device number is few, controller and the low magneto of power circuit cost most important.
Summary of the invention
For solving the deficiency that prior art exists, the invention discloses the low cost high powered density permanent magnetic motor of a kind of simplex winding, the present invention has following characteristics:
1, motor of the present invention is magneto, stator only has a set of stator armature winding A, and only lay a set of armature winding in each groove of motor, phase insulation is not needed in groove, motor winding inserting operation is simple, whole cost is lower than existing all kinds of three-phase induction motor and magneto, and owing to not needing phase insulation in groove, copper factor is high.
2, motor permanent magnet of the present invention is fixed on stator, not with rotor turns, easy for installation, is conducive to heat radiation, eliminates the mechanical stress damage that common magneto produces because permanent magnet rotates with rotor, the shortcomings such as permanent magnet heat radiation is bad.
3, the power density of motor of the present invention is high, and stock utilization is high, the motor of same design power, and material usage saved by motor of the present invention, reduces costs.
4, a set of armature winding A indirect current stream is only had when motor of the present invention runs, therefore the control circuit of motor only needs two electric and electronic power switching devices, as IGBT or MOSFET, as shown in Figure 1, existing all kinds of induction motor and permanent magnet motor stator all there are three-phase and above armature winding, need at least 6 electric and electronic power switching devices, as shown in Figure 2, therefore, needed for the control system of motor of the present invention, switching device is few, cost is low, and structure is simple.In addition, because device for power switching number is few, reduce the possibility that device for power switching in circuit for controlling motor breaks down, reliability improves.
5, the permanent magnet of motor of the present invention is selected flexibly, both the permanent magnet of high energy product can have been selected, also the permanent magnet of the low magnetic energy products such as ferrite can be selected, because can by the residual flux density of the design air gap flux density determination permanent magnet of motor, pole embrace again by changing permanent magnet determines the magnetic energy product of permanent magnet, and existing magneto is subject to the restriction of number of poles due to pole embrace, usually only has and adopt high-performance permanent magnet could meet the close needs of design magnetic.
For achieving the above object, concrete scheme of the present invention is as follows:
The low cost high powered density permanent magnetic motor of a kind of simplex winding, comprise stator and rotor, described stator comprises the stator yoke be made up of stator back yoke and multiple stator slot yoke, permanent magnet is provided with between stator back yoke and each stator slot yoke, the two ends of each stator slot yoke are respectively arranged with stator tooth, be armature slot between stator tooth, in described armature slot, lay a set of armature winding;
Described rotor comprises multiple rotor tooth, is provided with rotor, is provided with main air gap between each rotor tooth and stator tooth between adjacent two rotor tooths;
When motor runs, control size of current and the direction of a set of armature winding, the magnetic field interaction that armature supply magnetic field and permanent magnet produce makes the magnetic flux on stator tooth mutually strengthen or offset, stator field is opened continuously in a certain direction or is turned off, and utilizes magnetic resistance change rate between stators and rotators to produce torque.
Further, described armature winding penetrates from an armature winding place armature slot, pass from adjacent armature slot, winding in adjacent two armature slots forms an armature coil, each armature coil is across two stator tooth distances, in adjacent two armature slots, the size of current of winding is identical, and direction is contrary.
Further, when armature winding no power, the magnetic flux that described permanent magnet produces through stator slot yoke, stator tooth and main air gap along motor radial inflow rotor tooth, permanent magnet again under adjacent rotor tooth flows out to main air gap arrival another stator slot yoke adjacent, close through stator back yoke again, form the main flux of motor.
The number n of described motor stator tooth
smeet: n
s=2*n, wherein n be more than or equal to 2 natural number.
The number n of described rotor tooth
rwith the number n of motor stator tooth
smeet: nr=n
s/ 2.
The block number n of described permanent magnet
pmwith the number n of motor stator tooth
smeet: n
pm/ m=0.5*n
s, m be more than or equal to 1 natural number.
Further, when armature winding is energized, the magnetic field that armature winding electric current produces makes the stator tooth of armature slot both sides, armature winding place present different polarity respectively, the magnetic fields produced with permanent magnet superposes, make a stator tooth display polarity, main flux magnetic flux is had to pass through, another adjacent stator tooth does not have polarity, flow through without magnetic flux, the stator tooth of half is had to have polarity in motor, the stator tooth of half does not have polarity, according to magnetic resistance minimum principle, rotate to making rotor and rotor tooth is overlapped with the stator tooth with polarity, due to the half that the rotor number of teeth is the stator number of teeth, now each rotor tooth is all just right with stator tooth, this position is the aligned position of rotor tooth and stator tooth, magnetic resistance corresponding to this position is minimum.
Further, if rotor continues to rotate, sense of current in armature winding need be changed, make the stator tooth display polarity without polarity, and originally had the stator tooth of polarity not show polarity, at this moment, according to magnetic resistance minimum principle, rotor tooth rotates to having and present four trend having polarity stator tooth to align, thus rotor is by stressed rotation, after rotor tooth overlaps again with stator, continues to change armature winding sense of current, this process will repeat always, and rotor will continue to rotate.
Further, described permanent magnet is parallel magnetization or radial magnetizing, and every block permanent magnet both can have been magnetized by a monoblock permanent magnet and form, and also can be spliced by the permanent magnet that polylith width is narrower, the polar arc width of described permanent magnet can be identical, also can be different.
Further, the magnetizing direction of the permanent magnet on described same stator slot yoke is identical, and the magnetizing direction of the permanent magnet in adjacent two stator slot yoke portions is contrary; The magnetic flux that described adjacent two pieces of permanent magnets produce enters rotor through main air gap and forms main flux.
Further, two adjacent stator tooths are connected by stator slot yoke, every two stator tooths and between stator slot yoke form one piece of integrated iron core, this integrated iron core block number n in motor
cmeet n
c=n
r, n
rfor the number of rotor tooth.
Further, the polar arc width of the permanent magnet of described motor can be determined according to the magnetic energy product of permanent magnet or residual flux density, according to the residual flux density of the air gap flux density determination permanent magnet of motor, then determined the magnetic energy product of permanent magnet by the pole embrace changing permanent magnet.And existing magneto is subject to the restriction of number of poles due to pole embrace, usually only has and adopt high-performance permanent magnet could meet the close needs of design magnetic.
Wherein, the residual flux density of permanent magnet and the width of permanent magnet are directly proportional, and therefore adopt the permanent magnet of high energy product or high residual flux density significantly can reduce the width of permanent magnet, reduce the consumption of permanent magnet.In fact magnetic energy product is permanent magnet residual magnetism density and coercitive product, but more pays close attention to residual flux density for those skilled in the art, and therefore high energy product generally just represents high residual flux density.
Described permanent magnet and stator back yoke iron core and the equal close contact of stator slot yoke core.
Only lay a set of armature winding in described stator slot, do not need phase insulation in stator slot, groove utilance is high, and winding inserting technique is simple, low cost of manufacture.
Described motor stator tooth, stator slot yoke, stator back yoke and rotor tooth form by silicon steel plate stacking or are made up of high magnetic permeability core material.
Stator slot yoke is positioned at bottom stator slot near excircle direction, permanent magnet is provided with between stator slot yoke and stator back yoke, permanent magnet is not with rotor turns, easy for installation, be conducive to heat radiation, eliminate mechanical stress that common electric machine produces because permanent magnet rotates with rotor to damage and permanent magnet dispels the heat the shortcoming such as bad
Described permanent magnet both can be that permanent magnetic material such as ferrite or the aluminium nickel cobalt of permanent magnetic material if neodymium iron boron also can be low magnetic energy product of high energy product is made.
Described rotor is symmetrical field spider, notch cuttype rotor or turbine-like rotor.
Motor of the present invention specifically carrys out work like this, the stator core of motor of the present invention and rotor core adopt silicon steel plate stacking to form or the core material of high permeability is once made, when armature winding no power, the magnetic flux that described permanent magnet produces is through stator slot yoke, stator tooth and main air gap are along motor radial inflow rotor tooth, again through adjacent rotor tooth flow out to main air gap arrive another extremely under permanent magnet, then to close through stator back yoke, form the main flux of motor.When armature winding is energized, the magnetic field that armature winding electric current produces makes the stator tooth of armature slot both sides, armature winding place present different polarity respectively, the magnetic fields produced with permanent magnet superposes, make a stator tooth display polarity, main flux magnetic flux is had to pass through, another adjacent stator tooth does not have polarity, flow through without magnetic flux, because armature winding is arranged every a groove, therefore, the stator tooth of half is had to have polarity in motor, the stator tooth of half does not have polarity, according to magnetic resistance minimum principle, rotate to making rotor and rotor tooth is overlapped with the stator tooth with polarity, due to the half that the rotor number of teeth is the stator number of teeth, now just in time each rotor tooth is all just right with stator tooth, this position is the aligned position of rotor tooth and stator tooth, magnetic resistance corresponding to this position is minimum.Now, want rotor and continue to rotate, sense of current in armature winding need be changed, make the stator tooth display polarity just now without polarity, and originally had the stator tooth of polarity not show polarity, at this moment, according to magnetic resistance minimum principle, rotor tooth rotates to having and present four trend having polarity stator tooth to align, thus rotor is by stressed rotation, after rotor tooth overlaps again with stator, continues to change armature winding sense of current, this process will repeat always, and rotor will continue to rotate.
Beneficial effect of the present invention:
1, motor of the present invention only has a set of winding, winding construction is simple, simplify inserting-coil process, reduce manufacturing cost, only need the size of current and the direction that control a set of armature winding during operation, power circuit only needs two device for power switching, and common three phase electric machine needs at least 6 device for power switching, electric machine controller power demand switching device number is few, and cost is low.
The magnetic field that when 2 motors of the present invention run, armature winding and permanent magnet produce mutually strengthens on the stator teeth or offsets, when motor runs, armature winding and excitation winding complete period are energized simultaneously, therefore, the power density of motor of the present invention is high, stock utilization is high, the motor of same design power, material usage saved by motor of the present invention, reduces costs.
3, motor permanent magnet of the present invention is fixed on stator, not with rotor turns, easy for installation, is conducive to heat radiation, eliminates the mechanical stress damage that common magneto produces because permanent magnet rotates with rotor, the shortcomings such as permanent magnet heat radiation is bad.
4, only lay a set of winding in each stator slot of motor of the present invention, motor winding inserting technique is simple, does not need to place phase insulation in groove, is conducive to improving copper factor and groove utilance; Torque dead-band can be eliminated by the rotor structure changing motor of the present invention, improve the starting performance of motor, such as can adopt asymmetric rotor, turbine-like rotor or stepped rotor etc.
5, the cost due to the permanent magnet of motor polar arc wider width is higher, easily break time mechanically stressed, comparatively difficult during installation, the situation that the permanent magnet that mechanical strength is less not as good as polylith polar arc width is spliced, and the permanent magnet in motor of the present invention can be the permanent magnet that one piece of entirety magnetizes, also can be spliced by polylith permanent magnet, therefore motor manufacturing technology of the present invention is simple, and cost is low.
6, because the polar arc width of the permanent magnet of motor of the present invention can be determined flexibly according to the design magnetic energy product of permanent magnet or design residual flux density, so motor of the present invention both can adopt the permanent magnet of high energy product also can adopt the permanent magnet of low magnetic energy product, high energy product permanent magnet and low magnetic energy product permanent magnet mix and match can also be adopted, can according to the residual flux density of the design air gap flux density determination permanent magnet of motor in actual design, the magnetic energy product of required permanent magnet is determined again by the pole embrace of permanent magnet, and existing magneto is subject to the restriction of number of poles due to pole embrace, usually the needs adopting high-performance permanent magnet could meet high performance motor are only had.
7, because motor permanent magnet of the present invention is not directly towards air gap, permanent magnet both can be radial magnetizing also can be parallel magnetization, the mode that magnetizes is different little on the impact of motor performance, and for other surface-mounted permanent magnet machines, during employing parallel magnetization, magnetic flux reduces, the energy index of meeting appreciable impact motor, and it is comparatively difficult to obtain uniform radial magnetizing permanent magnetism body, processing cost is high.
Accompanying drawing explanation
The power converter circuit figure of Fig. 1 motor of the present invention;
The existing brushless direct current permanent magnetic of Fig. 2 and permagnetic synchronous motor power converter circuit figure;
Fig. 3 is motor embodiment 1 structural representation of the present invention;
Fig. 4 is motor embodiment 2 structural representation of the present invention;
Wherein, 1. stator tooth, 2. stator back yoke, 3. stator slot yoke, 4. armature slot, 5. armature winding, 6. permanent magnet, 7. rotor tooth, 8. rotor, 9. main air gap.
Embodiment:
Below in conjunction with accompanying drawing, the present invention is described in detail:
Embodiment 1 as shown in Figure 3, the present embodiment motor stator number of teeth is 8, the rotor number of teeth is 4, permanent magnet blocks number is 4, present embodiment comprises stator, rotor and main air gap, stator comprises stator core, permanent magnet and stator slot, stator core comprises stator tooth 1, stator back yoke 2 and stator slot yoke 3, stator core is made up of high permeability ferromagnetic material, stator core is provided with stator slot, stator slot is armature slot 4, armature winding 5 is laid in armature slot 4, armature winding 5 penetrates from an armature slot, pass from another adjacent armature slot, form a coil, make the size of current in every adjacent two armature slots identical, direction is contrary, lay arc-shaped permanent magnet 6 between stator slot yoke 3 and stator back yoke 2, permanent magnet 6 adopts the ferrite permanent magnet material of low magnetic energy product, and permanent magnet 6 takes parallel magnetization, and the magnetizing direction of adjacent two pieces of permanent magnets is contrary, rotor comprises rotor tooth 7 and rotor 8, and rotor tooth 7 is circumferentially symmetrical, is provided with main air gap 9 between rotor tooth 7 and stator tooth 1.
The magnetic flux that adjacent two pieces of permanent magnets produce enters rotor through main air gap and forms main flux, the polarity of two stator tooths corresponding under same permanent magnet is identical, the polarity of two stator tooths that other one piece of permanent magnet adjacent is with it corresponding then in contrast, and the magnetic field that armature winding electric current produces makes the magnetic direction on two adjacent stator tooths of these armature slot both sides, winding place contrary, increasing magnetic action is risen to a stator tooth, demagnetizing effect is risen to another stator tooth, therefore, armature winding current field and the mutual acting in conjunction of magnetic field of permanent magnet make the magnetic field of same permanent magnet corresponding two stator tooths mutually to strengthen or to offset, by controlling size of current and the direction of armature winding, turning on and off of the direction in magnetic field on stator tooth can be controlled, when the magnetic field on this stator tooth strengthens " open-minded " mutually, according to magnetic resistance minimum principle, this stator tooth has the trend attracting rotor tooth to align with it, therefore torque is produced, when this stator tooth aligns mutually with rotor tooth, after reaching the minimum position of magnetic resistance, change armature winding sense of current, magnetic field on this stator tooth is weakened " shutoff " mutually, now this stator tooth and rotor tooth sucking action disappear, but the magnetic field of stator tooth adjacent with it strengthens " open-minded " mutually, continue to attract rotor tooth, rotor is rotated continuously.
Embodiment 2 as shown in Figure 4, the present embodiment motor stator number of teeth is 8, the rotor number of teeth is 4, permanent magnet blocks number is 12, present embodiment comprises stator, rotor, main air gap, stator comprises stator core, permanent magnet and stator slot, stator core comprises stator tooth 1, stator back yoke 2 and stator slot yoke 3, stator core is made up of high permeability ferromagnetic material, stator core is provided with stator slot, stator slot is armature slot 4, armature winding 5 is laid in armature slot 4, armature winding 5 penetrates from an armature slot, pass from another adjacent armature slot, form a coil, make the size of current in every adjacent two armature slots identical, direction is contrary, arc-shaped permanent magnet 6 is laid between stator slot yoke 3 and stator back yoke 2, each stator slot yoke 3 there are 3 pieces of permanent magnets, permanent magnet 6 adopts the Nd-Fe-B permanent magnet material of high energy product, permanent magnet 6 takes radial magnetizing, the magnetizing direction of 3 pieces of permanent magnets on same stator slot yoke is identical, and the magnetizing direction of the permanent magnet on adjacent different stator slot yokes is contrary, rotor comprises rotor tooth 7 and rotor 8, and rotor is turbine shape, and when rotor tooth 7 aligns with stator tooth 1, this rotor tooth is different from the magnetic resistance of adjacent two stator tooths, is conducive to eliminating torque dead-band, improves motor starting performance, main air gap 9 is provided with between rotor tooth 7 and stator tooth 1.
The magnetic flux that adjacent two pieces of permanent magnets produce enters rotor through main air gap and forms main flux, the polarity of two stator tooths corresponding under same permanent magnet is identical, the polarity of two stator tooths that other one piece of permanent magnet adjacent is with it corresponding then in contrast, and the magnetic field that armature winding electric current produces makes the magnetic direction on two adjacent stator tooths of these armature slot both sides, winding place contrary, increasing magnetic action is risen to a stator tooth, demagnetizing effect is risen to another stator tooth, therefore, armature winding current field and the mutual acting in conjunction of magnetic field of permanent magnet make the magnetic field of same permanent magnet corresponding two stator tooths mutually to strengthen or to offset, by controlling size of current and the direction of armature winding, turning on and off of the direction in magnetic field on stator tooth can be controlled, when the magnetic field on this stator tooth strengthens " open-minded " mutually, according to magnetic resistance minimum principle, this stator tooth has the trend attracting rotor tooth to align with it, therefore torque is produced, when this stator tooth aligns mutually with rotor tooth, after reaching the minimum position of magnetic resistance, change armature winding sense of current, magnetic field on this stator tooth is weakened " shutoff " mutually, now this stator tooth and rotor tooth sucking action disappear, but the magnetic field of stator tooth adjacent with it strengthens " open-minded " mutually, continue to attract rotor tooth, rotor is rotated continuously.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (10)
1. the low cost high powered density permanent magnetic motor of simplex winding, it is characterized in that, comprise stator and rotor, described stator comprises the stator yoke be made up of stator back yoke and multiple stator slot yoke, permanent magnet is provided with between stator back yoke and each stator slot yoke, the two ends of each stator slot yoke are respectively arranged with stator tooth, be armature slot, lay a set of armature winding in described armature slot between stator tooth;
Described rotor comprises multiple rotor tooth, is provided with rotor, is provided with main air gap between each rotor tooth and stator tooth between adjacent two rotor tooths;
When motor runs, control size of current and the direction of a set of armature winding, the magnetic field interaction that armature supply magnetic field and permanent magnet produce makes the magnetic flux on stator tooth mutually strengthen or offset, stator field is opened continuously in a certain direction or is turned off, and utilizes magnetic resistance change rate between stators and rotators to produce torque.
2. the low cost high powered density permanent magnetic motor of a kind of simplex winding as claimed in claim 1, it is characterized in that, described armature winding penetrates from an armature winding place armature slot, pass from adjacent armature slot, winding in adjacent two armature slots forms an armature coil, each armature coil is across two stator tooth distances, and in adjacent two armature slots, the size of current of winding is identical, and direction is contrary.
3. the low cost high powered density permanent magnetic motor of a kind of simplex winding as claimed in claim 1, it is characterized in that, when armature winding no power, the magnetic flux that described permanent magnet produces through stator slot yoke, stator tooth and main air gap along motor radial inflow rotor tooth, permanent magnet again under adjacent rotor tooth flows out to main air gap arrival another stator slot yoke adjacent, close through stator back yoke again, form the main flux of motor.
4. the low cost high powered density permanent magnetic motor of a kind of simplex winding as claimed in claim 1, is characterized in that, the number n of described motor stator tooth
smeet: n
s=2*n, wherein n be more than or equal to 2 natural number;
The number n of described rotor tooth
rwith the number n of motor stator tooth
smeet: nr=n
s/ 2;
The block number n of described permanent magnet
pmwith the number n of motor stator tooth
smeet: n
pm/ m=0.5*n
s, m be more than or equal to 1 natural number.
5. the low cost high powered density permanent magnetic motor of a kind of simplex winding as claimed in claim 4, it is characterized in that, when armature winding is energized, the magnetic field that armature winding electric current produces makes the stator tooth of armature slot both sides, armature winding place present different polarity respectively, the magnetic fields produced with permanent magnet superposes, make a stator tooth display polarity, main flux magnetic flux is had to pass through, another adjacent stator tooth does not have polarity, flow through without magnetic flux, the stator tooth of half is had to have polarity in motor, the stator tooth of half does not have polarity, according to magnetic resistance minimum principle, rotate to making rotor and rotor tooth is overlapped with the stator tooth with polarity, due to the half that the rotor number of teeth is the stator number of teeth, now each rotor tooth is all just right with stator tooth, this position is the aligned position of rotor tooth and stator tooth, magnetic resistance corresponding to this position is minimum.
6. the low cost high powered density permanent magnetic motor of a kind of simplex winding as claimed in claim 5, it is characterized in that, if rotor continues to rotate, sense of current in armature winding need be changed, make the stator tooth display polarity without polarity, and originally had the stator tooth of polarity not show polarity, at this moment, according to magnetic resistance minimum principle, rotor tooth rotates to having and present four trend having polarity stator tooth to align, thus rotor is by stressed rotation, after rotor tooth overlaps again with stator, continue to change armature winding sense of current, this process will repeat always, rotor will continue to rotate.
7. the low cost high powered density permanent magnetic motor of a kind of simplex winding as claimed in claim 1, it is characterized in that, described permanent magnet is parallel magnetization or radial magnetizing, every block permanent magnet both can have been magnetized by a monoblock permanent magnet and form, also can be spliced by the permanent magnet that polylith width is narrower, the polar arc width of described permanent magnet can be identical, also can be different.
8. the low cost high powered density permanent magnetic motor of a kind of simplex winding as claimed in claim 1, is characterized in that, the magnetizing direction of the permanent magnet on same stator slot yoke is identical, and the magnetizing direction of the permanent magnet in adjacent two stator slot yoke portions is contrary; The magnetic flux that adjacent two pieces of permanent magnets produce enters rotor through main air gap and forms main flux.
9. the low cost high powered density permanent magnetic motor of a kind of simplex winding as claimed in claim 1, it is characterized in that, two adjacent stator tooths are connected by stator slot yoke, every two stator tooths and between stator slot yoke form one piece of integrated iron core, this integrated iron core block number n in motor
cmeet n
c=n
r, n
rfor the number of rotor tooth.
10. the low cost high powered density permanent magnetic motor of a kind of simplex winding as claimed in claim 1, it is characterized in that, the polar arc width of the permanent magnet of described motor can be determined according to the magnetic energy product of permanent magnet or residual flux density, according to the residual flux density of the air gap flux density determination permanent magnet of motor, then determined the magnetic energy product of permanent magnet by the pole embrace changing permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510695707.3A CN105207435B (en) | 2015-10-22 | 2015-10-22 | A kind of low cost high powered density permanent magnetic motor of simplex winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510695707.3A CN105207435B (en) | 2015-10-22 | 2015-10-22 | A kind of low cost high powered density permanent magnetic motor of simplex winding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105207435A true CN105207435A (en) | 2015-12-30 |
| CN105207435B CN105207435B (en) | 2018-03-23 |
Family
ID=54954935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510695707.3A Active CN105207435B (en) | 2015-10-22 | 2015-10-22 | A kind of low cost high powered density permanent magnetic motor of simplex winding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105207435B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111262355A (en) * | 2020-01-17 | 2020-06-09 | 山东大学 | Low-cost high-power density single-phase high-speed permanent magnet motor and method |
| CN112688444A (en) * | 2020-12-11 | 2021-04-20 | 杭州星成电气科技有限公司 | Single-phase reluctance motor with self-starting capability |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101552497A (en) * | 2009-05-14 | 2009-10-07 | 浙江大学 | A mixed excitation biconvex pole motor T |
| CN101552494A (en) * | 2009-05-14 | 2009-10-07 | 浙江大学 | A mixed excitation switch magnetic linkage motor |
| CN101562384A (en) * | 2009-05-14 | 2009-10-21 | 浙江大学 | Magnetic-field-enhanced permanent-magnetic switching flux linkage motor with high fault tolerance |
| CN103490533A (en) * | 2013-09-18 | 2014-01-01 | 东南大学 | Stator split magnetic flow switching type permanent magnetic memory motor |
| CN205081651U (en) * | 2015-10-22 | 2016-03-09 | 山东大学 | Low -cost high power density permanent magnet motor of simplex winding |
-
2015
- 2015-10-22 CN CN201510695707.3A patent/CN105207435B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101552497A (en) * | 2009-05-14 | 2009-10-07 | 浙江大学 | A mixed excitation biconvex pole motor T |
| CN101552494A (en) * | 2009-05-14 | 2009-10-07 | 浙江大学 | A mixed excitation switch magnetic linkage motor |
| CN101562384A (en) * | 2009-05-14 | 2009-10-21 | 浙江大学 | Magnetic-field-enhanced permanent-magnetic switching flux linkage motor with high fault tolerance |
| CN103490533A (en) * | 2013-09-18 | 2014-01-01 | 东南大学 | Stator split magnetic flow switching type permanent magnetic memory motor |
| CN205081651U (en) * | 2015-10-22 | 2016-03-09 | 山东大学 | Low -cost high power density permanent magnet motor of simplex winding |
Non-Patent Citations (1)
| Title |
|---|
| YI CHENG, CHARLES POLLOCK, HELEN POLLOCK: "A Permanent Magnet Flux Switching Motor for Low Energy Axial Fans", 《FOURTIETH IAS ANNUAL MEETING. CONFERENCE RECORD OF THE 2005 INDUSTRY APPLICATIONS CONFERENCE》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111262355A (en) * | 2020-01-17 | 2020-06-09 | 山东大学 | Low-cost high-power density single-phase high-speed permanent magnet motor and method |
| CN112688444A (en) * | 2020-12-11 | 2021-04-20 | 杭州星成电气科技有限公司 | Single-phase reluctance motor with self-starting capability |
| CN112688444B (en) * | 2020-12-11 | 2021-11-26 | 杭州星成电气科技有限公司 | Single-phase reluctance motor with self-starting capability |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105207435B (en) | 2018-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108964396B (en) | Stator partition type alternate pole hybrid excitation motor | |
| CN111049288B (en) | Surrounding type winding magnetic flux modulation stator structure | |
| CN105207436B (en) | A kind of ring-shaped yoke portion armature winding high power density composite excitation permanent magnet motor | |
| CN201038839Y (en) | Twisted mutually-supplementary magnetic pass switching dual protrusion pole permanent magnetic motor | |
| CN106981966B (en) | A kind of permanent magnet bias bearing-free switch magnetic-resistance starting/generator | |
| CN105186749B (en) | A kind of ring-shaped yoke portion double winding composite excitation permanent magnet motor | |
| CN105680652A (en) | Hybrid magnetic circuit double-stator weak-magnetic speed multiplying solid rotor permanent magnet synchronous motor and method thereof | |
| CN111181262B (en) | Stator structure using built-in magnetic flux modulation ring of winding | |
| CN205081652U (en) | Armature winding high power density mixed excitation permanent magnet motor of annular yoke portion | |
| CN104883019A (en) | Stator permanent magnet mixed excitation vernier motor | |
| CN105763009A (en) | Hybrid magnetic circuit low harmonic wave multi-stator flux-weakening speed extension permanent magnet synchronous motor, and method thereof | |
| CN205081598U (en) | Duplex winding high power density mixed excitation permanent magnet motor | |
| CN105207384B (en) | A kind of double winding high power density composite excitation permanent magnet motor | |
| CN205081651U (en) | Low -cost high power density permanent magnet motor of simplex winding | |
| CN105141104A (en) | Yoke excitation winding high power density hybrid excitation permanent magnet linear generator | |
| CN205081602U (en) | Low -cost high power density permanent magnet motor of single concentrated winding of annular | |
| CN105207435B (en) | A kind of low cost high powered density permanent magnetic motor of simplex winding | |
| CN108880182A (en) | A kind of division tooth modularization vernier permanent-magnetism linear motor | |
| CN103178672B (en) | Stator-surface-mounted type doubly salient permanent magnet motor adopting modularized rotor | |
| CN205081587U (en) | Excitation winding high power density mixed excitation permanent magnet linear generator of yoke portion | |
| CN108418375B (en) | Multi-section spoke staggered rotor permanent magnet synchronous motor for electric automobile and method thereof | |
| CN106100272A (en) | The double-salient-pole magnetic flux controllable motor that a kind of few rare earth tooth yoke is complementary | |
| CN105186733A (en) | Double-winding high-powder-density mixed excitation permanent-magnet linear generator | |
| CN105186750A (en) | Hybrid excitation permanent magnet linear generator with duplex windings on yokes | |
| CN205081600U (en) | Duplex winding mixed excitation permanent magnet motor of annular yoke portion |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |