CN103368284A - Electromagnetic induction device - Google Patents

Abstract

Disclosed is an electromagnetic induction device, which comprises a first permanent magnet array and a second permanent magnet array. The first permanent magnet array successively changes the direction in a specific direction by the integer equal division of 2pi, and the second permanent magnet array successively changes the direction in a specific direction by the integer equal division of 2pi. The number of turns of wound coils of an armature winding can be improved using an equivalent magnaflux method.

Description

The electromagnetically induced device

Technical field

The present invention relates to the electromagnetically induced device, refer to especially a kind of electromagnetically induced device of being used as motor or being called the generator use.

Background technology

In order to improve motor or to be called the magnetic field of generator, be called the arrangement mode that arrange the Hall Bake and had.The N utmost point and the S of permanent magnet are disposed the structure that forms extremely alternately.Magnetic field all can't produce in the outside and the inboard of magnet array.Can't effectively utilize magnetic field.For this point.Arrange the Hall Bake then is the arrangement that the magnetic pole of permanent magnet is differed 90 degree with adjacent magnets.Weaken the magnetic field of magnet array one side.In the relative enhancing magnetic field of the opposite side of this magnet array.

Then can produce the stronger array of permanent magnets in one-sided magnetic field.To dispose permanent magnet turning motor and the motor of armature winding (armature coil) between the 2 row array of permanent magnets (Duel) of having used Hall Bake alignment arrangements.Use double-deck Hall Bake to arrange iron-core-free motor and the generator without iron core of permanent magnet, be that the coil turn that armature winding (armature coil) twines is increased as much as possible, but structure in the past then is coil turn not to be pursued larger coil turn under optimized situation.

Summary of the invention

Technical problem to be solved by this invention is to provide a kind of electromagnetically induced device.

For addressing the above problem, the invention provides a kind of electromagnetically induced device, have mutually the 1st array of permanent magnets, the 2nd array of permanent magnets in the face of disposing, the pole orientation of described the 1st array of permanent magnets is with minute successive transformation directions such as integer of 2 π, the magnetic field of the 2nd array of permanent magnets side consists of the effect of additivity and strengthens, and the magnetic field of the 2nd array of permanent magnets and opposition side consists of the effect of " counteracting " and weakens, and the 1st permanent magnet of a plurality of above-mentioned configurations has been arranged; And the pole orientation of the 2nd array of permanent magnets is with minute successive transformation directions such as integer of 2 π, the magnetic field of the 1st array of permanent magnets side consists of the effect of additivity and strengthens, and the magnetic field of the 1st array of permanent magnets and opposition side consists of the effect of counteracting property and weakens, and the 2nd permanent magnet of a plurality of above-mentioned configurations arranged, therefore prepared the armature winding (armature coil) that disposes between the 1st array of permanent magnets, the 2nd array of permanent magnets and two row.

Described the 1st permanent magnet and the 2nd permanent magnet have identical basal area at the face of the parallel direction of magnetization, and the interval between the 1st, the 2nd usefulness array of permanent magnets provides this basal area subduplicate electromagnetically induced device more than 1.2 times, below 1.5 times.

Further, the pole orientation of described the 1st permanent magnet is the one by one direction arrangements of rotation of described specific direction 90 degree, the pole orientation of described the 2nd permanent magnet is the one by one direction arrangements of rotation of described specific direction 90 degree, and the pole orientation of described the 1st permanent magnet is vertical with the pole orientation of described the 2nd permanent magnet or opposite.

Further, described direction is rectilinear direction.

Further, described direction is circumferencial direction.

Further, described electromagnetically induced device is motor or generator.

Electromagnetically induced device of the present invention, by with the pole orientation of the 1st array of permanent magnets minute successive transformation directions such as integer with 2 π, the pole orientation of the 2nd array of permanent magnets can provide the electromagnetically induced device of the coil turn that can promote armature winding (armature coil) winding with minute successive transformation directions such as integer of 2 π.

Description of drawings

Fig. 1 uses the double-deck Hall Bake of magnaflux method of equal value to arrange the sectional drawing in magnetic field.

Fig. 2 is key diagram 1 magnaflux method of equal value.

Fig. 3 is that the sectional drawing in magnetic field is arranged in the double-deck Hall Bake of applicable magnaflux method of equal value.

Fig. 4 is the relation table diagram of gap length and coil turn.

Fig. 5 is the relation table diagram of gap length and coil turn.

Fig. 6 is explanation best the first embodiment of the present invention, the brief strabismus map of cylinder type three-phase linear syncmotor 100.

Fig. 7 is the A-A section of Fig. 6.

Fig. 8 is the B-B section of Fig. 6.

Fig. 9 is the C-C section of Fig. 6.

Figure 10 is explanation best the second embodiment of the present invention, the brief strabismus map of three-phase synchronous motor 200.

Figure 11 A is the broad cross-section map of the three-phase synchronous motor 200 in the section of the parallel direction of magnetization.

Figure 11 B is the distribution schematic diagram of armature winding (armature coil).

Description of reference numerals

The 112nd, permanent magnet

The 111st, array of permanent magnets

The 116th, permanent magnet

The 115th, array of permanent magnets

The 131st, armature winding

Embodiment

Arrange magnetic field in the double-deck Hall Bake of rotation arrangement about magnetic pole one by one with 90 degree, use magnaflux method of equal value to obtain the average density of line of magnetic force of magnetic pole gap central authorities.Arrange double-deck Hall Bake, and the density of line of magnetic force in the array of permanent magnets outside becomes extremely low, and the specific permeability of permanent magnet is almost identical with air again.

Do not use the strong magnetic material magnetic line of force such as iron to concentrate or magnetically saturated situation just not can occur, therefore can obtain the required density of line of magnetic force of the magnetic line of force of equal value.

Fig. 1 is that the sectional drawing in magnetic field 10 is arranged in the double-deck Hall Bake of applicable magnaflux method of equal value.

Double-deck Hall Bake arrange magnetic field 10 be by the magnetic pole of permanent magnet 13 through the 1st rectilinear direction 90 degree one by one the magnetic pole of array of permanent magnets 12 and the permanent magnet 17 of rotation configuration to rotate one by one the array of permanent magnets 16 that disposes through the 1st straight line and parallel the 2nd rectilinear direction 90 degree prepared.

Array of permanent magnets 12 is that the permanent magnet 13 that opposite side weakens disposes by the side magnetic field enhancing of array of permanent magnets 16, and array of permanent magnets 16 is that the permanent magnet 17 that opposite side weakens disposes by the side magnetic field enhancing of array of permanent magnets 12.

Fig. 1 is the sectional drawing on the plane of permanent magnet 13, the 17 parallel direction of magnetizations. Permanent magnet 13 and 17 all is square on the plane of the parallel direction of magnetization, and identical basal area is arranged.

Standardize take the basal area on parallel permanent magnet 13,17 plane as 1 unit, permanent magnet 13,17 basal area then are 1, again because basal area be square, so the foursquare length of side also is 1.Between the array of permanent magnets 12 and 16,14 interval (gap is long) then is a.

Fig. 1 represents that the closed curve that is is the magnetic line of force, understands each pole span from magnetic line of force shape and all has identical magnetic flux path, and this magnetic flux path is represented with dotted line.

The main magnetic line of force of the magnetic line of force of equal value in the magnetic field, double-deck Hall Bake that Fig. 1 represents is by the magnetic flux path of Fig. 1, because magnetic circuit is symmetrical in pole center line XX, the magnetic line of force is symmetrical in respectively magnetic pole separately again, now, defines a magnetic line of force such as the mode of Fig. 2.Among Fig. 2, R is permanent magnet 13,17 magnetic force impedance, and S is the magnet basal area perpendicular to magnetic pole, long 1 meter of the pole orientation of permanent magnet, and the vacuum magnetic susceptibility is shown in following formula with μ o:

$R=\frac{l_m}{{\mathrm{\μ}}_{0}S}...\left(1\right)$

Here, the specific permeability of permanent magnet levels off to 1, again among Fig. 2, γ is that the magnetic pole strength of magnet is to the distance of longitudinal path, δ is magnetic pole strength in the gap near the distance ratio long with the gap of the point of transverse path, Sv is the basal area of longitudinal path, and Sr is the cross-sectional area of transverse path in the gap.

$S_v=\frac{\mathrm{<figure-callout\; id="2"\; label="S"\; filenames="HDA00002987466900021.png"\; state="\{\{state\}\}">S</figure-callout>}}{2},$ $S_r=\frac{a}{2}S$

So main magnetic line of force ψ 1, the ψ 2 of three closed-loop paths, ψ 3 satisfy next loop equation:

$\left\{\begin{array}{c}(4\mathrm{a\&delta;}+2\mathrm{\&gamma;}+3)R({\mathrm{\&phi;}}_1+{\mathrm{\&phi;}}_3)+\\ 4a(1-2\mathrm{\&delta;}){\mathrm{R\&phi;}}_3+(4\mathrm{a\&delta;}+2\mathrm{\&gamma;}+3)R({\mathrm{\&phi;}}_2+{\mathrm{\&phi;}}_3)={4H}_m{l}_m\\ (4\mathrm{a\&delta;}+2\mathrm{\&gamma;}+3)R({\mathrm{\&phi;}}_1+{\mathrm{\&phi;}}_3)+\frac{2(1+2\mathrm{\&gamma;})}{a}{\mathrm{R\&phi;}}_1={2H}_m{l}_m\\ (4\mathrm{a\&delta;}+2\mathrm{\&gamma;}+3)R({\mathrm{\&phi;}}_2+{\mathrm{\&phi;}}_3)+\frac{2(1+2\mathrm{\&gamma;})}{a}{\mathrm{R\&phi;}}_2={2H}_m{l}_m\end{array}\right....\left(2\right)$

Hm: the confining force of permanent magnet, l _m: the long (l in pole piece spacing _m=1).

That α can be expressed as according to (2):

$\mathrm{\&alpha;}=\frac{2(2\mathrm{\&gamma;}+1)}{a^2(1-2\mathrm{\&delta;})(4\mathrm{a\&delta;}+2\mathrm{\&gamma;}+3)+2a(2\mathrm{\&gamma;}+1)+{4\mathrm{\&gamma;}}^2+8\mathrm{\&gamma;}+3}$

${\mathrm{\&phi;}}_1={\mathrm{\&phi;}}_2=\mathrm{\&alpha;}\frac{a^2(1-2\mathrm{\&delta;})H_m{l}_m}{(2\mathrm{\&gamma;}+1)R},$ ${\mathrm{\&phi;}}_3=\mathrm{\&alpha;}\frac{H_m{l}_m}{R}...\left(3\right)$

Therefore, average density of line of magnetic force Bav is expressed as following formula between the NS magnetic pole on the gap center line YY:

$B_{\mathrm{av}}=\frac{{\mathrm{\&phi;}}_3}{S_v}=\frac{{2\mathrm{\&alpha;H}}_m{l}_m}{\mathrm{SR}}={2\mathrm{\&alpha;B}}_r...\left(4\right)$

Br is the residual density of line of magnetic force of permanent magnet.

Fig. 3 arranges the sectional drawing in magnetic field 20 for the Hall Bake of applicable magnaflux method of equal value, the Hall Bake arrange magnetic field 20 be by the magnetic pole of permanent magnet 23 along the circumferential direction 90 degree to rotate one by one that the along the circumferential direction one by one rotation of about 90 degree of magnetic pole of the array of permanent magnets 22 of descending one-tenth and permanent magnet 27 is arranged in the Hall Bake, the lower array of permanent magnets 26 that form are arranged in the Hall Bake prepared.

Array of permanent magnets 22 is to be strengthened because of the additivity effect in magnetic field on one side by permanent magnet 26, arrange because of the permanent magnet 23 that the property offset effect weakens generation in another side magnetic field, array of permanent magnets 26 is to be strengthened because of the additivity effect in magnetic field on one side by permanent magnet 22, and arrange because of the permanent magnet 27 that the property offset effect weakens generation in another side magnetic field.

Fig. 3 is the sectional drawing that is parallel to permanent magnet 23,27 direction of magnetizations.The section (face parallel with paper) that is parallel to permanent magnet 23,27 direction of magnetizations is all trapezoidal, and identical basal area is arranged.Permanent magnet 23 has identical quantity with permanent magnet 27, permanent magnet 23 and 27 quantity, for instance, if 64 words are arranged, adjacent is permanent magnet 23 or is permanent magnet 27, can engage with 174 degree near 180 degree, so permanent magnet 23 and 27 can be considered approximate foursquare existence.

Situation as Fig. 1, permanent magnet 23,27 the basal area square root that will be parallel to permanent magnet 23,27 the direction of magnetization (face parallel with paper) are considered as 1 and standardize, because the square root of basal area is 1, permanent magnet 23,27 basal area also are 1, permanent magnet 23,27 section configuration that is parallel to the direction of magnetization all is similar to square again, permanent magnet 23,27 the length of side also level off to 1, and 24 interval (gap is long) then is a between array of permanent magnets 22 and the permanent magnet row 26.

As shown in Figure 3, using permanent magnet 23,27 along the circumferential direction one by one rotation of 90 degree of magnetic pole, lower formed array of permanent magnets 22,26 situation are arranged in the Hall Bake, are similar to the magnetic line of force of equal value of Fig. 2, can directly apply mechanically above-mentioned theory.

The long a in gap is 0.25,0.5,1.0,1.5,2.0 situation,, as parameter substitution (4) the Bav value following table 1 of trying to achieve is represented with mean value B0, γ and δ between the magnetic pole of the close By of the y direction magnetic line of force on the straight line YY:

Table 1

In the table 1, γ=0.25, δ=0.25th, the magnetic line of force of selection geometric center is used as the situation in path.

γ=0.10 again, δ=0.25th, with the value of B0 and Bav error minimize, B τ is to be mean value between the pole span of By according to the analytic value that resolve in quadratic power finite element method (FEM) magnetic field., suppose that density of line of magnetic force is that sinusoidal wave shape distributes between the magnetic distance here, density of line of magnetic force mean value Bav τ is Bav's

Doubly.The error of B τ and Bav τ is in γ=0.20, and δ=0.25 is minimum situation.

As shown in Figure 1, the magnetic pole of permanent magnet 13 is through the one by one rotation of the 1st rectilinear direction 90 degree, array of permanent magnets 12 under arrange the Hall Bake is spent one by one rotation through the 1st rectilinear direction with the 2nd parallel rectilinear direction 90 with the magnetic pole of permanent magnet 17, array of permanent magnets 16 under arrange the Hall Bake, permanent magnet 13,17 possess foursquare shape, magnetic field 10 and is as shown in Figure 3 arranged in double-deck Hall Bake with basal area same as described above, the along the circumferential direction one by one rotation of 90 degree of the pole orientation of permanent magnet 23, array of permanent magnets 22 under arrange the Hall Bake and the along the circumferential direction one by one rotation of 90 degree of the magnetic pole of permanent magnet 27, array of permanent magnets 26 under arrange the Hall Bake, permanent magnet 23,27 possess approximate foursquare section, double-deck Hall Bake with basal area same as described above arranges 20, as described above, the average density of line of magnetic force Bav τ between the NS pole span on the center line YY of gap is:

$B_{\mathrm{av\&tau;}}=\sqrt{2}\mathrm{\&alpha;}{B}_r...\left(4^{\&prime;}\right)$

Br is the residual density of line of magnetic force of permanent magnet, and α is:

$\mathrm{\&alpha;}=\frac{2(2\mathrm{\&gamma;}+1)}{a^2(1-2\mathrm{\&delta;})(4\mathrm{a\&delta;}+2\mathrm{\&gamma;}+3)+2a(2\mathrm{\&gamma;}+1)+{4\mathrm{\&gamma;}}^2+8\mathrm{\&gamma;}+3}...\left(5\right)$

Count Ф with the magnetic circuit basal area S of each pole span if double-deck Hall Bake is arranged the magnetic interlinkage of the armature winding (armature coil) that disposes in the gap in magnetic field, turn number N represents:

Φ＝NSB _avτ……………(6)

The armature winding that disposes in the interval (armature coil), wide the filling up of pole span made the number of turn that can obtain maximum under the gap, the square root of permanent magnet basal area is considered as 1 in the face of the parallel direction of magnetization, in the foursquare situation of section, the square length of side is 1, and be similar in the foursquare situation at the permanent magnet section, the approximate square length of side is 1, S is the ratio of the degree of depth 1 (the permanent magnet length of square section craspedodrome direction) in magnetic field, N is the ratio of the degree of depth 1 and the long a in gap, the fixed number take k as ratio.

If N=kal ... (7)

S=2l then ... (8)

Formula (7), formula (8) substitution formula (6) magnetic interlinkage are counted Ф and can be expressed as:

$\mathrm{\&Phi;}={\mathrm{kl}}^{2}a{B}_{\mathrm{av\&tau;}}=\sqrt{2}{\mathrm{kl}}^2\mathrm{aa}{B}_r...\left(9\right)$

On the one hand, as above-mentioned, γ in the formula (5)=0.20, δ=0.22 o'clock, the Bav τ of formula (4) just becomes the calculating formula of average density of line of magnetic force between the actual pole pitch of expression, and therefore, actual magnetic interlinkage can be by γ=0.20, the formula (9) of δ=0.22 o'clock calculates, because k and 1 is fixed fixed number in the formula.

$f\left(a\right)=\mathrm{a\&alpha;}=\frac{2(2\mathrm{\&gamma;}+1)a}{a^2(1-2\mathrm{\&delta;})(4\mathrm{a\&delta;}+2\mathrm{\&gamma;}+3)+2a(2\mathrm{\&gamma;}+1)+{4\mathrm{\&gamma;}}^2+8\mathrm{\&gamma;}+3}$ (∵γ＝0.20，δ＝0.22)

……………(10)

Can make function f (a) reach the maximum long a value in gap and exist, arrange magnetic field with the double-deck Hall of long formation Bake, this gap, can reach maximum magnetic interlinkage number.

Function f (a) is graphical, be Fig. 4.Owing to there is maximum:

" $\frac{\mathrm{df}\left(a\right)}{\mathrm{da}}=0$

Can obtain a=1.2 by following formula.That is to say subduplicate 1.2 times of the permanent-magnetic field basal area that is parallel to the direction of magnetization, section is foursquare situation, and gap length is got 1.2 times of the length of side, is approximate foursquare situation, get 1.2 times that are similar to the square length of side, can under the number of turn of regulation, obtain maximum magnetic interlinkage number.

Because magnetic field is arranged in the Hall Bake and armature winding is the relation of relative motion, in order not allow permanent magnet contact with armature winding, reality need leave space to a certain degree when being formulated in armature coil in the gap, magnetic field, armature winding is electric wire around axle and the electric wire spooled with the fixing row of model again, therefore the thickness of coil is not all to be filled up by conductor, if 1 centimeter of the square section of permanent magnet one length of side, between magnetic field and coil-conductor, there is about 1 millimeter electrical insulator in the face of on the face in magnetic field.

In this case, the square root of the permanent magnet basal area of the parallel direction of magnetization is considered as 1, when section is square, the foursquare length of side is 1, permanent magnet is when being similar to square, the approximate foursquare length of side is 1, the situation of the armature winding number of turn N that disposes in the gap, magnetic field such as cotype (7).

With N=k (a-0.2) l ... (II) represent,

Therefore, the magnetic interlinkage is counted the gap length of maximum and is:

(∵γ＝0.20，δ＝0.22_

……………(12)

Take the function g (a) of following formula definition for distance between maximum.

Function g (a) is graphical, be Fig. 5.Owing to there is maximum:

$\frac{\mathrm{dg}\left(a\right)}{\mathrm{da}}=0$

Can obtain a=1.5 by following formula.That is to say subduplicate 1.5 times of the permanent-magnetic field basal area that is parallel to the direction of magnetization, section is foursquare situation, and gap length is got 1.5 times of the length of side, is approximate foursquare situation, get 1.5 times that are similar to the square length of side, can under the number of turn of regulation, obtain maximum magnetic interlinkage number.

Just like this, subduplicate 1.2～1.5 times for the permanent magnet basal area of the parallel direction of magnetization are grown in the gap in arrangement magnetic field, double-deck Hall Bake, permanent magnet is in the foursquare situation, gap length is set as 1.2～1.5 times of the square length of side, to be similar in the foursquare situation at section, gap length is set as 1.2～1.5 times that are similar to the square length of side, can obtains maximum magnetic interlinkage number at armature winding.

The 1st embodiment

The 1st embodiment of the best of the present invention, cylinder type three-phase linear syncmotor, Fig. 6 are explanation best the first embodiment of the present invention, the brief strabismus map of cylinder type three-phase linear syncmotor 100, Fig. 7 is the A-A section of Fig. 6, and Fig. 8 is the B-B section of Fig. 6, and Fig. 9 is the C-C section of Fig. 6.

But cylinder type three-phase linear syncmotor 100 is to be axially moveable and but to possess the cylindric mover 107 of breach prepared by the drive unit 109 of external power source 108 supply capabilities with mover 107 by stator cylindraceous 105 and stator 105.

Stator 105 is that the magnetic pole by annular permanent magnnet 112 is comprising on the section of central shaft, the outside array of permanent magnets 111 of the 1st array of permanent magnets that one by one rotation adjacency of 90 degree consists of, comprising on the section of central shaft with the magnetic pole of annular permanent magnnet 116, the inboard array of permanent magnets 115 of the 2nd array of permanent magnets that one by one rotation adjacency of 90 degree consists of, with the inboard at medial surface, with the 1st fixing circular fixed component of the 1st array of permanent magnets 111, outboard tube 113, with the inboard at lateral surface, with the 2nd fixing circular fixed component of array of permanent magnets 115, inside tube 113, but with in order not interfere mover 107, fixing outboard tube 113 jaggy is prepared with the fixed head 123 of inside tube 117.

And, stator 105 is guide rod 121 to be enclosed with guide rod supports member 211,213 by the outer upper of outboard tube 113 and bottom, guide rod 121 surfaces are upper to be divided into fixedly top electrode 203,205,207,209 of two sections with guide rod supports member 211 side end points to the scope between the guide rod supports member, and the wire 141 that each electrode is drawn bundles via the lead path 143 that arranges on the guide rod supports member 211 and imports drive unit 109.

But mover 107 is by the three-phase coil 131 packages fixing breach fixed head 139 of the barbed portion of exert oneself ring 137 and the ring 137 of exerting oneself be furnished with of the fixing barbed portion in coil loop 133 and coil loop 133 two ends and will to be attached to the coil loop 133 of the ring 137 end points part of exerting oneself prepared along the linear bearing 135 that guide rod 121 enters out.Linear bearing 135 possesses sliding electrode 201, the monolateral end points that the set electrodes 203,205,207,209 in guide rod 121 surface contacts separately and passes the lead path 143 connection sliding electrodes 201 that arrange on exert oneself ring 137 and the linear bearing 135 by the wire 141 of three-phase coil 131 contacts.Therefore, three-phase coil 131 be pass each electrode 203,205,207 of stator 105 sides, 209 with drive unit 109 electric power on be connected.Here, each electrode 203,205,207,209 flows to respectively relative three-phase alternating current U phase, V phase, W phase, the neutral point current of three-phase alternating voltage that produces with drive unit 109, but the thrust that produces along with three-phase coil 131 excitations allows mover 107 move axially.

Permanent magnet 112 quantity of outside permanent magnet 111 are identical with permanent magnet 116 quantity of inboard array of permanent magnets 115, and are identical with the pole orientation of inboard permanent magnet 115 internal diameter directions permanent magnet magnetized 116 in the pole orientation of permanent magnet 112 internal diameter directions permanent magnet magnetized 112 of the outside array of permanent magnets 111 that same radius disposes.Permanent magnet magnetized 112 direction of magnetizations of permanent magnet 112 interior direction of principal axis in the outside array of permanent magnets 111 that same radius disposes are opposite with the permanent magnet 116 interior direction of principal axis permanent magnet magnetized 116 of inboard array of permanent magnets 115.

Because outside array of permanent magnets 111 is magnetic pole edge direction of principal axis 90 degree by permanent magnet 112 rotates one by one the limit and arranges and form, the field weakening of one side (present embodiment is the outside) of arranging, (present embodiment is inboard to opposite side, inboard array of permanent magnets 115 sides) then be and the enhancing that weakens ratio and be directly proportional, can be in one-sided (present embodiment be inboard) strong magnetic field of generation of outside array of permanent magnets 111.Rotate one by one the limit and arrange and form because inboard array of permanent magnets 115 is magnetic pole edge direction of principal axis 90 degree by permanent magnet 116 again, the field weakening of one side of arranging (present embodiment is inboard), (present embodiment is the outside to opposite side, inboard array of permanent magnets 111 sides) then be and the enhancing that weakens ratio and be directly proportional, can strong magnetic field occur one-sided (present embodiment is the outside) of inboard array of permanent magnets 115.

Because outside magnet array 111 and inboard magnet array 115 are such as aforementioned arrangement, the magnetic field grow in the space between outside array of permanent magnets 111 and the inboard array of permanent magnets 115, the outside of outside array of permanent magnets 111 and the inboard of inboard array of permanent magnets 115 can produce magnetic leakage hardly on the one hand.And in the space between outside array of permanent magnets 111 and the inboard array of permanent magnets 115 the distributed pole multipath to the magnetic line of force.The distributed pole multipath to the space of the magnetic line of force in dispose three-phase coil 131 since the magnetic line of force mostly and three-phase coil 131 the more efficient thrust that converts to of electric power that provides from drive unit 109 is provided.Because the magnetic field grow in field of configuration three-phase coil 131, three-phase coil 131 do not need to use the iron core just can strong excitation, but and can produce powerful thrust mover 107 is moved axially.So, owing to do not use iron core, just do not have teeth groove and energy reduced volume.

Outside array of permanent magnets 111 is that foursquare annular permanent magnnet 112 stacks and consists of by footpath direction and the magnetized section of thickness direction.Inboard array of permanent magnets 115 is that foursquare annular permanent magnnet 116 stacks and consists of by footpath direction and the magnetized section of thickness direction again.The inside cylindrical magnetic field that the outside cylindrical magnetic field that outside array of permanent magnets 111 consists of and inboard array of permanent magnets 115 consist of consists of double-deck Hall Bake and arranges magnetic field.Outside cylindrical magnetic field and inside cylindrical magnetic field cylinder magnetic field center axle separately overlaps mutually.The distance on the surface in the inner face in outside cylindrical magnetic field and inside cylindrical magnetic field be the Hall Bake arrange magnetic field between distance, this distance is set as 1.2 times of square root (the monolateral length that is equivalent to permanent magnet 112,116 square section) of the square cross-sectional area in the face of parallel annular permanent magnnet 112,116 direction of magnetizations.Present embodiment consists of by the insulating coating copper strips ring-type package with the about 1.3 times width (4/3 times) of the fixed thickness of each armature winding 131, permanent magnet 112,116 the square section length of side.The dimensional accuracy and the occupation efficiency that consist of like this are higher, even if distance is almost filled up conductor and this magnetic field of consisting of also can not contact with armature coil between magnetic field, therefore, take above-mentioned (10) formula as the basic magnetic interlinkage number that can maximize armature coil 131, the axle thrust of every 1A increases.

Above-mentioned enforcement, because three-phase coil 131 is configured in the distributed pole multipath in the space of the magnetic line of force, the magnetic line of force mostly and three-phase coil 131 intersect vertically, a small amount of electric current produces powerful thrust, outside array of permanent magnets 111 be by the magnetic pole of permanent magnet 112 axially 90 degree one by one rotation arrange and form, the outside field weakening of outside array of permanent magnets 111, inboard then strengthen according to the ratio that weakens, inboard in outside array of permanent magnets 111 produces strong magnetic field, again inboard array of permanent magnets 115 be by the magnetic pole of permanent magnet 116 axially 90 degree one by one rotation arrange and form, the inboard field weakening of inboard array of permanent magnets 115, the outside then strengthens according to the ratio that weakens, the outside in outside array of permanent magnets 111 produces strong magnetic field, but not necessarily want the one by one rotation of 90 degree, for example 45 degree rotate one by one and also can, axially rotate one by one the integer five equilibrium of 2 π, direction of principal axis is arranged a plurality of the 1st permanent magnets, then the magnetic field of the 1st array of permanent magnets inboard can strengthen because of the additivity effect, weaken because of the property offset effect in the magnetic field in the outside, along the circumferential direction the rightabout with the 1st permanent magnet rotates, circumferencial direction is arranged the 2nd a plurality of permanent magnets, be disposed at the inboard of the 1st array of permanent magnets, the magnetic field in the 2nd array of permanent magnets outside can strengthen because of the additivity effect, and inboard magnetic field is weakened also passable because of the property offset effect.

The 2nd embodiment

The 2nd embodiment of the best of the present invention is three-phase synchronous generator.Figure 10 is explanation best the second embodiment of the present invention, the brief strabismus map of three-phase synchronous motor 200.Figure 11 A is the broad cross-section map of the three-phase synchronous motor 200 in the section of the parallel direction of magnetization.Figure 11 B is the distribution schematic diagram of armature winding (armature coil).

The generator 200 of present embodiment is prepared by rotor 250 and stator 260.Installation shaft 240 on rotor 250, and rotating shaft 240, can consist of generator.Rotor 250 is by array of permanent magnets 210,220 prepared.Stator 26 is prepared by coil arrangement 230.Array of permanent magnets 210,220 consists of with ring-type separately, and coil arrangement 230 also consists of with ring-type.Permanent magnet 210,220 and coil arrangement 230 be the concentric circles configuration.Array of permanent magnets 220 is arranged on the inboard of array of permanent magnets 20.

Array of permanent magnets 210,220 is respectively to be arranged institute and consist of in the Hall Bake of rotation one by one by permanent magnet 211,221 magnetic pole, 90 degree.

The permanent magnet 211 of array of permanent magnets 210 is identical with permanent magnet 221 quantity of array of permanent magnets 220, and the pole orientation of permanent magnet 211 internal diameter directions permanent magnet magnetized 221 of the array of permanent magnets 210 that disposes at same radius is identical with the pole orientation of array of permanent magnets 220 internal diameter directions permanent magnet magnetized 221.Permanent magnet magnetized 211 direction of magnetizations of permanent magnet 211 inner periphery directions of the array of permanent magnets 210 that disposes at same radius are opposite with the permanent magnet 221 inner periphery directions permanent magnet magnetized 221 of array of permanent magnets 220.

Because array of permanent magnets 210 is magnetic pole edge circumferencial direction 90 degree by permanent magnet 211 rotates one by one the limit and arranges and form, the field weakening of one side (present embodiment is the outside) of arranging, opposite side (present embodiment for inboard) then is and the enhancing that weakens ratio and be directly proportional, can strong magnetic field occurs at 210 one-sided (present embodiment is for inboard) that permanent magnet 211 is arranged.Rotate one by one the limit and arrange and form because array of permanent magnets 220 is magnetic pole edge circumferencial direction 90 degree by permanent magnet 221 again, the field weakening of one side of arranging (present embodiment is inboard), opposite side (present embodiment is the outside) then is and the enhancing that weakens ratio and be directly proportional strong magnetic field to occur 220 one-sided (present embodiment is the outside) that permanent magnet 221 is arranged.

Because array of permanent magnets 210 and array of permanent magnets 220 are arrangements as described above, the magnetic field grow in the space between array of permanent magnets 210 and the array of permanent magnets 220, the outside of array of permanent magnets 210 and the inboard of array of permanent magnets 220 can produce magnetic leakage hardly on the one hand.And dispose coil arrangement 230 between array of permanent magnets 210 and the array of permanent magnets 220, can produce high voltage.Under so arranging, because the magnetic field, field of coil arrangement 230 configurations strengthens, even if the coil 231 that coil arrangement 230 consists of does not use iron core, also can produce high voltage.So, owing to do not use iron core, just do not have the teeth groove again can reduced volume.And shown in Figure 11 B, coil arrangement 230 is to be entwined by the order that a plurality of coil 231 takes U picture-V phase-W phase, produces three-phase alternating current.

Present embodiment, 240 weeks of rotating shaft consist of for being arranged according to the Hall Bake by permanent magnet 211,221, consist of double-deck Hall Bake by inside and outside two groups magnet row 201,220 and arrange magnetic field.Each and every one permanent magnet 211, rough equating of radially (section parallel with the direction of magnetization) basal area of 221,, permanent magnet 211 inner faces that consist of outside magnet row 210 face one another with permanent magnet 221 outsides that consist of inboard magnet row 220.The radially section that each and every one consists of the permanent magnet 211 of outside magnet row 210 and consist of the permanent magnet 221 of inboard magnet row 220 is all trapezoidal, respectively gets 64 and consists of double-deck Hall Bakes and arrange magnetic field.Armature winding 231 is configured in double-deck Hall Bake and arranges in the magnetic field, but outside magnet row 210 all are 64 limit shapes with inboard magnet row 220, and there are connection angle in adjacent permanent magnet 211,221 clearance plane.The three-phase synchronous generator 200 of present embodiment, the radially section profile of armature winding 231 is rectangle, this amplitude is exactly 211,221 both estimation angles from the spindle central to the permanent magnet, and armature winding 231 twines flange bearing by the insulating coating circular copper wire and consists of again.The inner face of the permanent magnet 211 of formation outside magnet 210 is long with the gap that the distance of the outside of the permanent magnet 221 that consists of inboard magnet 220 becomes the arrangement of Hall Bake.The thickness that this gap is long, consider joint angle, bearing flange, permanent magnet 211,221 and the gap of bearing flange, be set as 1.5 times of the long-pending square root of trapezoidal cross-section when being similar to square (be equivalent to permanent magnet 211,221, the foursquare length of side) of permanent magnet 211, the 221 parallel direction of magnetizations.That is to say, interval, magnetic field length is set as 1.5 times of trapezoidal radially basal area in the gap, magnetic field that aspectant permanent magnet 211,221 subtend bread enclose.For the magnetic field that makes present embodiment is 64 limit shapes, above-mentioned connection angle is about 174 degree, permanent magnet 211, the rough square that can be considered of 221 radially section, therefore take formula (12) as the basis, synchronous generator in the present embodiment, armature winding can reach maximum magnetic interlinkage number, can increase generating voltage in fixed specified winding number.

The above embodiments, the array of permanent magnets 210 of generator 200 are to rotate one by one the limit arrangement by about 90 degree of the magnetic pole edge circumferencial direction of permanent magnet 211 to form, and arrange outside field weakening, and inboard then equal proportion strengthens.In the strong magnetic field of 210 inboard generations that permanent magnet 211 is arranged, array of permanent magnets 220 is to rotate one by one the limit arrangement by about 90 degree of the magnetic pole edge circumferencial direction of permanent magnet 221 to form, and arranges inboard field weakening, and the outside then equal proportion strengthens.Produce strong magnetic field in 220 outsides that permanent magnet 221 is arranged, but not necessarily want the one by one rotation of 90 degree, for example 45 degree rotate one by one and also can, along the circumferential direction rotate one by one the integer five equilibrium of 2 π, circumferencial direction is arranged the 1st a plurality of permanent magnets, then the magnetic field of the 1st array of permanent magnets inboard can strengthen because of the additivity effect, weaken because of the property offset effect in the magnetic field in the outside, along the circumferential direction the rightabout with the 1st permanent magnet rotates, circumferencial direction is arranged the 2nd a plurality of permanent magnets, be disposed at the inboard of the 1st array of permanent magnets, the magnetic field in the 2nd array of permanent magnets outside can strengthen because of the additivity effect, and inboard magnetic field is weakened also passable because of the property offset effect.

As above explanation, subduplicate 1.2～1.5 times of the long permanent magnet basal area for the parallel direction of magnetization in the gap in magnetic field is arranged in double-deck Hall Bake, permanent magnet is in the foursquare situation, be set as 1.2～1.5 times of the square length of side, permanent magnet is approximate foursquare situation, then be set as 1.2～1.5 times that are similar to the square length of side, according to above-mentioned situation, armature winding can obtain large magnetic interlinkage number.Therefore, the situation of generator reaches maximum voltage with minimum magnet amount, and motor reaches maximum moment of torsion in the magnet amount of minimum again, because the permanent magnet amount in arrangement magnetic field, double-deck Hall Bake can reach to be minimized, can reach the effect of low consumption and resource-saving again.

Claims (5)

1. an electromagnetically induced device is characterized in that: comprise the 1st array of permanent magnets and the 2nd array of permanent magnets; Described the 1st array of permanent magnets and the 2nd array of permanent magnets face one another configuration, described the 1st array of permanent magnets is along the integer five equilibrium of specific direction 2 π change direction one by one, one side magnetic field of described the 2nd array of permanent magnets strengthens because of the additivity effect, opposite side disposes a plurality of the 1st permanent magnets in this way because the property offset effect weakens; Described the 2nd array of permanent magnets is that one side magnetic field of described the 1st array of permanent magnets strengthens because of the additivity effect along the integer five equilibrium of specific direction 2 π change direction one by one, and opposite side disposes a plurality of the 2nd permanent magnets in this way because the property offset effect weakens; Dispose armature winding between described the 1st array of permanent magnets and the 2nd array of permanent magnets;

Described the 1st permanent magnet and the 2nd permanent magnet have identical basal area at the section of the parallel direction of magnetization;

In the interval of described the 1st array of permanent magnets and the 2nd array of permanent magnets, the electromagnetically induced device of the aforementioned basal area square root that disposes size more than 1.2 times, below 1.5 times.

2. electromagnetically induced device as claimed in claim 1, it is characterized in that: the pole orientation of described the 1st permanent magnet is the one by one arrangements of rotation of described specific direction 90 degree, the pole orientation of described the 2nd permanent magnet is the one by one arrangements of rotation of described specific direction 90 degree, and the pole orientation of described the 1st permanent magnet is vertical with the pole orientation of described the 2nd permanent magnet or opposite.

3. electromagnetically induced device as claimed in claim 1 or 2, it is characterized in that: described direction is rectilinear direction.

4. electromagnetically induced device as claimed in claim 1 or 2, it is characterized in that: described direction is circumferencial direction.

5. electromagnetically induced device as claimed in claim 1, it is characterized in that: described electromagnetically induced device is motor or generator.

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