CN101938204A - Permanent magnet rotary motor and elevator device employing the same - Google Patents
Permanent magnet rotary motor and elevator device employing the same Download PDFInfo
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- CN101938204A CN101938204A CN201010118008XA CN201010118008A CN101938204A CN 101938204 A CN101938204 A CN 101938204A CN 201010118008X A CN201010118008X A CN 201010118008XA CN 201010118008 A CN201010118008 A CN 201010118008A CN 101938204 A CN101938204 A CN 101938204A
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Abstract
The present invention provides a permanent magnet rotary motor and an elevator device employing the same, wherein the permanent magnet rotary motor is capable of restraining rise cost due to a rotor core and reducing torque pulsation. The permanent magnet rotary motor includes a stator and a rotor, the stator is provided with a stator core and a stator winding, the stator core is provided with a plurality of stator projecting poles radially, the stator winding is accepted in narrow slits, each of which is formed between two neighboring stator projecting poles, the rotor includes the rotor core and multiple permanent magnets, the permanent magnets are arranged on the surface of the rotor with an equal interval around the rotor core, the rotor is characterized in that the permanent magnets are parallel to the axial direction of the rotor, and circumferential distribution of magneto resistance of a clearance between the rotor and the stator is varied along the axial direction of the rotor.
Description
Technical field
The present invention relates to a kind of permanent-magnet rotary electric machine and use its elevator gear.
Background technology
In permanent-magnet rotary electric machine, the torque pulsation that produces during based on the torque pulsation of cogging torque or energising becomes problem.Particularly, in the permanent-magnet rotary electric machine in being applicable to the hoist engine of lift, owing to seek at the low torque ripple (being about 1% under the p-p) under the wide cut zone of nominal torque during up to breakdown torque, so problem is more deep.As the countermeasure of reply torque pulsation, widely used usually is to utilize the permanent magnet of half-conical shape to wait the skew (skew) that carries out stator or rotor.
Particularly, the technology of the rotor of pasting the surperficial magnet-type structure of permanent magnet on the surface of rotor core being carried out skew is disclosed in the patent documentation 1,2.In patent documentation 1,2 disclosed permanent-magnet rotary electric machines,, constitute a plurality of permanent magnets mutual structure that axially reaches the circumferential misalignment configuration on the magnet pasting face of each rotor core along rotor in order to reduce the high order harmonic component of magnetic flux distributions.
Patent documentation 1: TOHKEMY 2006-304407 communique
Patent documentation 2: TOHKEMY 2008-48481 communique
Patent documentation 3: TOHKEMY 2008-161801 communique
Under the situation of the skew that carries out rotor, because a plurality of permanent magnets reach circumferential misalignment along the axial of rotor mutually on the magnet pasting face of each rotor core, so the magnet pasting face also forms along the shape of the axial and circumferential misalignment of rotor.Thus, be under the situation of cast iron in rotor core, be difficult to the magnet pasting face be cut based on milling cutter processing.In addition, be under the situation of electromagnetism copper coin in rotor core, the dislocation of corresponding magnet, and make electromagnetism copper coin rotation stacked or to make the electromagnetism copper coin of a plurality of models stacked with it again.Thus, cause flow chart to increase, cost rises.As its example, in the permanent-magnet rotary electric machine of patent documentation 1, by milling cutter processing to the magnet pasting face of the rotor core of cast iron along the skew of magnet and axially and circumferentially cutting at rotor.Particularly, be under the situation on plane at the face of the rotor core side of permanent magnet, must be circumferentially and form a plurality of grooves rectangular-shaped, a plurality of bottom surfaces axially.In order to form a groove milling cutter is carried out in each bottom surface and add man-hour, cut is wasted man-hour, causes cost to rise.In the research and development of permanent-magnet rotary electric machine, though reduced torque pulsation, because the situation that this problem causes being difficult to carry out skew usually exists.
Summary of the invention
To this, the present invention makes in order to address the above problem, its purpose is, the cost that provides a kind of processing that can suppress because of rotor core to cause rises, can reduce the permanent-magnet rotary electric machine of torque pulsation again, thereby applicable to low torque ripple is had under the situation of extremely being strict with as the permanent-magnet rotary electric machine in the hoist engine that is applied to lift.
In order to address the above problem, permanent-magnet rotary electric machine of the present invention has stator and rotor, described stator has stator core and stator winding, this stator core radially is extruded with the prominent utmost point of a plurality of stators, and this stator winding is accommodated in the slit, and this slit is formed between the prominent utmost point of adjacent described stator, described rotor has rotor core and a plurality of permanent magnet, these a plurality of permanent magnets along described rotary core circumferentially uniformly-spaced to be disposed at rotor surface, it is characterized in that
Permanent magnet is configured to the axially parallel with rotor, and the circumferential distribution of the magnetic resistance in the space between rotor and the stator (gap) is along the axial variation of rotor.
And then, in permanent-magnet rotary electric machine of the present invention, it is characterized in that, along radially the forming by rotor core being cut the groove that forms of rotor, and the circumferential distribution of the magnetic resistance in the space between rotor and the stator (gap) is along the axial variation of rotor at the stickup face of the permanent magnet of rotary core.
And then, in permanent-magnet rotary electric machine of the present invention, it is characterized in that, in the projection that radially forms magnetic of the rotor core upper edge rotor between the adjacent permanent magnet that makes progress in the week of rotor, thereby make the axial variation of the circumferential distribution of the magnetic resistance in the space between rotor and the stator along rotor.
And then, in permanent-magnet rotary electric machine of the present invention, it is characterized in that, radially forming by rotor core being cut the groove that forms of the rotor core upper edge rotor between the adjacent permanent magnet of making progress in the week of rotor, thereby make the axial variation of the circumferential distribution of the magnetic resistance in the space between rotor and the stator along rotor.
And then, in permanent-magnet rotary electric machine of the present invention, it is characterized in that groove forms with respect to the axioversion of rotor.
And then, in permanent-magnet rotary electric machine of the present invention, it is characterized in that groove has with respect to the axially parallel of rotor and forms two grooves shorter than the axial length of rotor, the circumferential position difference of each groove.
And then, in permanent-magnet rotary electric machine of the present invention, it is characterized in that projection forms with respect to the axioversion of rotor.
And then, in permanent-magnet rotary electric machine of the present invention, it is characterized in that projection is by with respect to the axially parallel of rotor and form two projections shorter than the axial length of rotor and constitute the circumferential position difference of each projection.
And then, in permanent-magnet rotary electric machine of the present invention, it is characterized in that, permanent magnet be shaped as the half-conical shape.
And then, in permanent-magnet rotary electric machine of the present invention, it is characterized in that, permanent magnet is rectangular shape, described permanent-magnet rotary electric machine is the outer transition of rotor configuration in the peripheral part of stator, described slit is the standard-sized sheet slit of the circumferential thrust of the leading section that do not have the prominent utmost point of stator, stator, and the combination of the slit number of the quantity of permanent magnet and stator is base unit with the quantity 10 of permanent magnet with slit several 12.
And then, in elevator gear of the present invention, it is characterized in that, used above-mentioned permanent-magnet rotary electric machine.
And according to the present invention, the circumferential distribution of the magnetoimpedance in the space between rotor and the stator (gap) can reduce torque pulsation thus along the axial variation (with the skew same principle) of rotor.
In addition, be disposed at rotor core the magnet pasting face a plurality of permanent magnets axially and week upwards good position, therefore, the cut of magnet pasting face for along rotor axially linearly, and the cost that can suppress to cause because of processing rises.
According to the present invention, the permanent-magnet rotary electric machine that the cost that causes in the processing that has suppressed because of rotor core rises and using in its elevator gear can also be realized the reduction of torque pulsation.
Description of drawings
Fig. 1 is the drawing in side sectional elevation of the structure of the permanent-magnet rotary electric machine of expression first execution mode of the present invention.
Fig. 2 is the partial perspective view of the structure of the rotor of the permanent-magnet rotary electric machine of expression first execution mode of the present invention.
Fig. 3 is the partial perspective view that represents the structure of rotor core and groove in first execution mode of the present invention.
Fig. 4 is from the expanded view of the part of the observed rotor core of stator side in first execution mode of the present invention.
Fig. 5 is the partial perspective view of the structure of the groove of the expression shape different with Fig. 3 in first embodiment of the invention.
Fig. 6 is from the expanded view of the part of the rotor core of the observed Fig. 5 of stator side in first execution mode of the present invention.
Fig. 7 is arranged at the drawing in side sectional elevation of structure at week of rotor permanent-magnet rotary electric machine during upwards with respect to the opposition side of each magnetic blow out centre for be illustrated in position with each groove in first execution mode of the present invention.
Fig. 8 is the drawing in side sectional elevation of the structure of the permanent-magnet rotary electric machine of expression second execution mode of the present invention.
Fig. 9 is the partial perspective view of the structure of the rotor of the permanent-magnet rotary electric machine of expression second execution mode of the present invention.
Figure 10 is the partial perspective view that represents the structure of rotor core and projection in second execution mode of the present invention.
Figure 11 is from the expanded view of the part of the observed rotor core of stator side in second execution mode of the present invention.
Figure 12 is arranged at the drawing in side sectional elevation of structure at week of rotor permanent-magnet rotary electric machine during upwards with respect to the opposition side of each magnetic blow out centre for be illustrated in position with each projection of Fig. 8 in second execution mode of the present invention.
Figure 13 is the drawing in side sectional elevation of the structure of the permanent-magnet rotary electric machine of expression the 3rd execution mode of the present invention.
Figure 14 is the partial perspective view of the structure of the rotor of the permanent-magnet rotary electric machine of expression the 3rd execution mode of the present invention.
Figure 15 is for representing the partial perspective view of the structure of rotor core, groove and projection in the 3rd execution mode of the present invention.
Figure 16 is from the expanded view of the part of the observed rotor core of stator side in the 3rd execution mode of the present invention.
Figure 17 is the expanded view of the part of the rotor core when the observed rotor core of stator side is formed by the electromagnetism copper coin in the 3rd execution mode of the present invention.
Figure 18 is the drawing in side sectional elevation (Figure 18 (a) presentation surface, Figure 18 (b) represents the back side) that forms the electromagnetism copper coin of rotor core in the 3rd execution mode of the present invention.
Figure 19 is the drawing in side sectional elevation of the structure of the permanent-magnet rotary electric machine of expression the 4th execution mode of the present invention.
The drawing in side sectional elevation of the structure of the permanent-magnet rotary electric machine when Figure 20 has formed projection for being illustrated in rotor core in the 4th execution mode of the present invention.
The drawing in side sectional elevation of the structure of the permanent-magnet rotary electric machine when Figure 21 has formed groove and projection for be illustrated in rotor core in the 4th execution mode of the present invention.
Figure 22 is the drawing in side sectional elevation (Figure 22 (a) presentation surface, Figure 22 (b) represents the back side) that forms the electromagnetism copper coin of rotor core in the 4th execution mode of the present invention.
Figure 23 represents the sectional arrangement drawing of structure of hoist engine of the lift of the 5th execution mode of the present invention.
The drawing reference numeral explanation
101 permanent-magnet rotary electric machines
102 stators
103 rotors
104 stator cores
105 stator winding
106 permanent magnets
107 rotor cores
108
109 spaces
111 yoke portions (back of the body unshakable in one's determination holds portion)
The 112 stators utmost point (tooth) of dashing forward
113 stator slottings (stator ス ロ Star ト) (slit)
114 stator thrusts
121 magnet pasting faces
122 grooves
123 projections
124 electromagnetism copper coins
131 hoist engines
132 rope sheaves
133 brakes
134 housings
135 bearings
136 encoders
Embodiment
(first execution mode)
Use the drawing in side sectional elevation of Fig. 1, the permanent-magnet rotary electric machine of first execution mode of the present invention is described.
In Fig. 1, permanent-magnet rotary electric machine 101 is the electric rotating machine of interior transition, and it is coaxial shape ground has: stator 102 cylindraceous; Via the columned rotor 103 of space 109 arranged opposite in interior all sides of this stator 102.In permanent-magnet rotary electric machine 101, stator 102 produces rotating magnetic field, and by the magnetic interaction between stator 102 and the rotor 103, and make rotor 103 rotations.
The permanent-magnet rotary electric machine 101 of transition in present embodiment shows, but the present invention also can be implemented on the permanent-magnet rotary electric machine of outer transition equally.And, have the permanent-magnet rotary electric machine (with reference to Figure 19) of outer transition and interior transition stator and rotor equally, but opposite with the relative configuration of stator and rotor is, rotor in the mode that can rotate via space and stator arranged opposite in the outer circumferential side of this stator.
And the prominent utmost point 112 of stator does not have the stator projection 114 that is formed at circumferential both sides, stator slotting 113 can be formed the standard-sized sheet slit.And the quantity of the prominent utmost point of stator is set at as 12 of the multiple of the number of phases 3.
A plurality of tabular shaped component vertically stacked form of stator core 104 by forming by tabular magnetic component (electromagnetism copper coin) stamping-out.By this stepped construction, reduce eddy current loss, and reduce heating.
In the prominent utmost point 112 of stator, via the concentrated stator winding 105 pairing phase windings that are wound with of insulating component (not shown bobbin).Should concentrate the winding mode of volume for the winding conductor of repeatedly reeling with respect to four sides of the prominent utmost point 112 of stator.The coil terminal portion of phase winding is outstanding to the axial outside from the axial two ends of stator core 104.Stator winding 105 can adopt and each phase winding is the star-star connection mode of Y word shape wiring and be any mode of connection in the delta connection mode of △ shape wiring.Stator core 104 constitutes the magnetic circuit of stator side, and stator winding 105 produces magnetic flux by energising at the prominent utmost point 112 of stator.Rotor core 107 plays a role as the magnetic circuit of rotation side, and permanent magnet 106 plays a role as rotary pole.
Adopt Fig. 2～Fig. 7 that the rotor 103 of present embodiment is described in detail.
Fig. 2 is the partial perspective view of the structure of the rotor 103 of expression permanent-magnet rotary electric machine 101.Fig. 3 is the partial perspective view of the structure of the rotor core 107 of presentation graphs 2 and groove 122.Fig. 4 is the local expanded view from the observed rotor core 103 of stator 102 side direction radially inner sides.Fig. 5 has formed the partial perspective view of structure of rotor core 107a of the groove 122a of the shape different with Fig. 3 for expression.Fig. 6 is the local expanded view from the rotor core 103 of the observed Fig. 5 of stator 102 side direction radially inner sides.Fig. 7 is illustrated in position with the groove of Fig. 1 to be arranged at the drawing in side sectional elevation of structure at week of rotor permanent-magnet rotary electric machine 101 during upwards with respect to the opposition side of each magnetic blow out centre.
In rotor 103, the permanent magnet 106 that has been sticked vertically on the magnet pasting face 121 of rotor core 107 is formed with groove 122 (Fig. 2) at magnet pasting face 121.Groove 122 forms from axially cutting continuously to inside at the moment of rotor 103.This groove 122 is along with the axial inner progress to rotor 103, to the circumferential misalignment formation (Fig. 3) of rotor 103.In Fig. 4, when the width with the periphery of rotor of groove 122 is made as W
d, magnet pasting face 121 circumferential width be made as W
PMThe time, W
d, W
PMRelation satisfy
W
d＜W
PM/ 2 ... (1) formula (Fig. 4).
At this moment, the magnetic resistance in the space 109 increases on groove 122, and therefore, the circumferential distribution of magnetic resistance is along axial variation, thereby can reduce torque pulsation.
Groove 122 also has the method (Fig. 5) of linearly cutting on rotor axial.In this case, groove 122 is made of two grooves, and its circumferential position difference separately.When the axial length with groove 122a is made as L
d, rotor core 107 axial length be made as L
RTThe time, L
d, L
RTRelation satisfy
L
d＜L
RT/ 2 ... (2) formula (Fig. 6).
Fig. 5 compares with Fig. 3, and the variation of the magnetic resistance of rotor axial is not level and smooth, therefore, can not get the effect of Fig. 3 structure.But the cutting of groove becomes easily, so favourable at manufacture view.
As shown in Figure 7, even be arranged in position, also can obtain equal effect in week of rotor upwards under the situation with respect to the opposition side at the center of each magnet with each groove 122.
(second execution mode)
In the permanent-magnet rotary electric machine 101b of second execution mode of the present invention, except rotor 103, all with the permanent-magnet rotary electric machine 101 identical (Fig. 8) of first execution mode.
Utilize Fig. 9～Figure 12 that the rotor 103 of present embodiment is described in detail.
Fig. 9 is the partial perspective view of the structure of the rotor 103 of expression permanent-magnet rotary electric machine 101b.Figure 10 is the rotor core 107 of presentation graphs 9 and the partial perspective view of the structure of projection 123.Figure 11 is the local expanded view from the observed rotor 103 of stator 102 side direction radially inner sides.Figure 12 is illustrated in position with each projection of Fig. 8 to be arranged at drawing in side sectional elevation in the structure of week of rotor permanent-magnet rotary electric machine 101b during upwards with respect to the opposition side of each magnetic blow out centre.
In rotor 103, the permanent magnet 106 that on the magnet pasting face 121 of rotor core 107, has been sticked vertically, and make the projection 123 of magnetic and circumferential one-sided adjacent (Fig. 9) of the rotor of permanent magnet 106.Projection 123 extends straight (Figure 10) on rotor axial.In this case, be made as L when axial length with projection 123
P, rotor core 107 axial length be made as L
RTThe time, L
P, L
RTRelation satisfy
L
P＜L
RT/ 2 ... (3) formula (Figure 11).
At this moment, produce in the end of permanent magnet 106 and be not towards stator but turn back to the magnetic flux of rotor by projection 123.Thereby the circumferential distribution of magnetic resistance is along axial variation, thereby can reduce torque pulsation (and then the location that projection 123 realizes magnet is to prevent that it is to circumferential dislocation).
As shown in figure 12, even be arranged in position, also can obtain equal effect in week of rotor upwards under the situation with respect to the opposition side at the center of each magnet with each projection 123.
(the 3rd execution mode)
In the permanent-magnet rotary electric machine 101c of the 3rd execution mode of the present invention, except rotor 103, all with permanent-magnet rotary electric machine 101, the 101b identical (Figure 13) of first, second execution mode.
Utilize Figure 14～Figure 16 that the rotor 103 of present embodiment is described in detail.
Figure 14 is the partial perspective view of structure of the rotor 103 of permanent-magnet rotary electric machine 101c.Figure 15 is the partial perspective view of the structure of rotor core 107, groove 122 and the projection 123 of expression Figure 14.Figure 16 is the local expanded view from the observed rotor 103 of stator 102 side direction radially inner sides.
In rotor 103, the permanent magnet 106 that on the magnet pasting face 121 of rotor core 107, has been sticked vertically, and make groove 122 adjacent with magnet pasting face 121, make circumferential one-sided adjacent (Figure 14) of the rotor of projection 123 and permanent magnet 106.Groove 122 extends straight (Figure 15) with projection 123 on rotor axial.In this case, be made as L when axial length with groove 122 and projection 123
d, L
P, the axial length of rotor core 107 is made as L
RTThe time, L
d, L
P, L
RTRelation satisfy formula (2), (3) (Figure 16).
At this moment, upwards in a side identical projection 123 is set in week of rotor with groove 122 with respect to the center of each magnet, thus, magnetic resistance in the space 109 increases on groove 122, make projection 123 attract the magnetic flux of magnet end, therefore, compare with first, second execution mode, the circumferential distribution of magnetic resistance is along axially significantly variation, thus the reduction torque pulsation.
In the permanent-magnet rotary electric machine 101 of first～the 3rd execution mode, 101b, 101c, rotary core 107 is formed by the casting thing or the laminate core of cast iron etc.At this, be the situation of stacked copper coin for the rotor core 107 of the permanent-magnet rotary electric machine 101c of the 3rd execution mode, adopt Figure 17 and be described in detail with Figure 18.
Figure 17 is the expanded view of the part of the rotor core 107 when the observed rotor core 107 of stator 102 sides is formed by electromagnetism copper coin 124.Figure 18 is the drawing in side sectional elevation of the electromagnetism copper coin 124 of the rotor core 107 of formation Figure 17, Figure 18 (a) presentation surface, and Figure 18 (b) represents the back side.
The axial length L of groove 122 and projection 123
d, L
P, the axial length L of rotor core 107
RTRelation satisfy following formula.
L
d=L
P=L
RT/ 2 ... (4) formula
By following formula as can be known, in the zone of the I of Figure 17 along the electromagnetism copper coin of stacked Figure 18 of rotor axial (a), in the zone of the II of Figure 17 along the electromagnetism copper coin of stacked Figure 18 of rotor axial (b).(a) with (b) show and the relation of carrying on the back owing to being in, thus rotor core can be made by the shape of a model, thus reduce cost.
In first～the 3rd execution mode, permanent magnet is the half-conical shape.The permanent magnet of half-conical shape has the more close sinuous effect of the magnetic flux distributions that makes in the space, therefore, can reduce torque pulsation to a certain extent.This design is used for being reduced in the number of times of the torque pulsation that described permanent magnet can't descend, so reductionization torque pulsation more.
(the 4th execution mode)
Figure 19 is the drawing in side sectional elevation of the structure of the permanent-magnet rotary electric machine 101d when rotor core 107 has formed groove 122 of expression the 4th execution mode of the present invention.Figure 20 is the drawing in side sectional elevation of the structure of the permanent-magnet rotary electric machine 101e when being illustrated in rotor core 107 and having formed projection 123.Figure 21 is the drawing in side sectional elevation of the structure of the permanent-magnet rotary electric machine 101f when being illustrated in rotor core 107 and having formed groove 122 with projection 123.The drawing in side sectional elevation of the electromagnetism copper coin 124 when Figure 22 is formed by the electromagnetism copper coin for rotor core.Figure 22 (a) presentation surface, Figure 22 (b) represents the back side.
The permanent magnet electric rotating machine 101d of the 4th execution mode, the permanent magnet 206 of 101e, 101f are not the half-conical shape, but rectangular shape.In addition, the permanent magnet electric rotating machine 101 of first, second, third execution mode, 101b, 101c are applicable in interior transition and outer transition any, but permanent magnet electric rotating machine 101d, 101e, the 101f of the 4th execution mode are restricted to outer transition.
Its reason is, is set at outer transition, and the magnetic density in the space 109 between stator 102 and the rotor 103 is approaching by sine wave thus, thereby has the effect that reduces torque pulsation.And, also record this principle in the patent documentation 3.
In addition, the permanent magnet of rectangular shape is compared with the permanent magnet of half-conical shape, and it is few to add number, so cost reduces.On the other hand, if the permanent magnet of rectangular shape makes the transition in using, then torque pulsation is risen, and therefore, present embodiment is defined in outer transition.
In addition, the prominent utmost point 112 of stator shown in Figure 19 is characterised in that slit is not for there being the standard-sized sheet slit of circumferential stator thrust 114 at leading section.Its reason is, in the breakdown torque zone, magnetic saturation takes place in the stator thrust 114 that makes progress in week of the front end of the prominent utmost point 112 of the stator of stator core 104 shown in Figure 1, become the main cause that torque pulsation is risen, therefore, do not have the standard-sized sheet of stator thrust 114 slit by being set at, then have the effect that prevents that in the breakdown torque zone torque pulsation from rising.In addition, the combination of the stator slotting several 113 of the quantity of permanent magnet 106 and stator 102 is a base unit with the quantity 10 of permanent magnet and the quantity 12 of the prominent utmost point of stator.
In the rotor 103 of the permanent magnet electric rotating machine 101d of Figure 19, the permanent magnet 106 that has been sticked vertically on the magnet pasting face 121 of rotor core 107 is formed with the groove 122 of first execution mode on magnet pasting face 121.
In the rotor 103 of the permanent magnet electric rotating machine 101e of Figure 20, the permanent magnet 106 that has been sticked vertically on the magnet pasting face 121 of rotor core 107 is in the circumferential one-sided projection 123 that is formed with second execution mode of the rotor of permanent magnet 106.
In the rotor 103 of the permanent magnet electric rotating machine 101f of Figure 21, the permanent magnet 106 that has been sticked vertically on the magnet pasting face 121 of rotor core 107 is formed with the groove 122 and the projection 123 of the 3rd execution mode on the rotor of magnet pasting face 121 and permanent magnet 106 circumferential one-sided.
In the permanent magnet electric rotating machine of first～the 4th execution mode, a permanent magnet has been taked processing, but in order to reduce eddy current loss, for also taking same processing at a plurality of permanent magnets of cutting apart of rotor axial.
(the 5th execution mode)
Utilize Figure 23 that the structure of the hoist engine under permanent-magnet rotary electric machine 101d, the 101e of described the 4th execution mode, the situation that 101f is applied to elevator gear is described.
In Figure 23, hoist engine 131 has: permanent-magnet rotary electric machine; The transmission of power of permanent-magnet rotary electric machine generation is given the rope sheave 132 of rope; Apply the brake 133 of braking force to rotor 103; The bearing 135 of bolster 108; Support the housing 134 of above-mentioned member, and, permanent-magnet rotary electric machine and rope sheave 132 integrated formations.And as mentioned above, the permanent magnet electric rotating machine has stator 102, rotor 103, axle 108 and encoder 136.In addition, brake 133 can be braked the rotor 103 in big footpath, therefore, can apply stronger braking force than the interior transition of brake axle 108.
Be applied to by permanent-magnet rotary electric machine in the hoist engine of elevator gear present embodiment, can be the time realize low torque ripple (being about 1%) in the wide cut zone during to breakdown torque under p-p, and help passing to the reduction of noise of vibration, the elevator mechanism of car from nominal torque.And then a plurality of permanent magnets 106 of magnet pasting face 121 that are configured in rotor core 107 are axially and week upwards good position configuration, therefore, the cut that can make magnet pasting face 121 along rotor 103 axially linearly, reduce thereby help cost.
The industrial aspect utilizability
The present invention has the forever magnet-type of requirement to rotate motor for being applicable to low torque ripple, and then can be applicable to the application equipment such as lift device that use it.
Claims (13)
1. permanent-magnet rotary electric machine, it has stator and rotor,
Described stator has stator core and stator winding, and this stator core radially is extruded with the prominent utmost point of a plurality of stators, and this stator winding is accommodated in the slit, and this slit is formed between the prominent utmost point of adjacent described stator,
Described rotor has rotor core and a plurality of permanent magnet, these a plurality of permanent magnets along described rotary core circumferentially uniformly-spaced being disposed at rotor surface,
Described permanent-magnet rotary electric machine is characterised in that,
Described permanent magnet is configured to the axially parallel with described rotor, and the circumferential distribution of the magnetic resistance in the space between described rotor and the described stator is along the axial variation of described rotor.
2. permanent-magnet rotary electric machine according to claim 1 is characterized in that,
Along radially the forming by rotor core being cut the groove that forms of described rotor, and the circumferential distribution of the magnetic resistance in the space between described rotor and the described stator is along the axial variation of described rotor at the stickup face of the described permanent magnet of described rotary core.
3. permanent-magnet rotary electric machine according to claim 1 is characterized in that,
In the projection that radially forms magnetic of the described rotor in described rotor core upper edge between the adjacent described permanent magnet that makes progress in the week of described rotor, thereby make the axial variation of the circumferential distribution of the magnetic resistance in the space between described rotor and the described stator along rotor.
4. permanent-magnet rotary electric machine according to claim 1 is characterized in that,
Radially forming by the groove that forms is cut in this rotor core of the described rotor in described rotor core upper edge between the adjacent described permanent magnet of making progress in the week of described rotor, thereby make the axial variation of the circumferential distribution of the magnetic resistance in the space between described rotor and the described stator along rotor.
5. according to claim 2 or 4 described permanent-magnet rotary electric machines, it is characterized in that,
Described groove forms with respect to the axioversion of described rotor.
6. according to claim 2 or 4 described permanent-magnet rotary electric machines, it is characterized in that,
Described groove has with respect to the axially parallel of described rotor and forms two grooves shorter than the axial length of described rotor, the circumferential position difference of each groove.
7. permanent-magnet rotary electric machine according to claim 3 is characterized in that,
Described projection forms with respect to the axioversion of described rotor.
8. permanent-magnet rotary electric machine according to claim 3 is characterized in that,
Described projection is by with respect to the axially parallel of described rotor and form two projections shorter than the axial length of described rotor and constitute the circumferential position difference of each projection.
9. permanent-magnet rotary electric machine according to claim 1 is characterized in that,
It is to have made up the motor that the permanent-magnet rotary electric machine described in the claim 2～4 forms.
10. permanent-magnet rotary electric machine according to claim 1 is characterized in that,
It is to have made up the motor that the permanent-magnet rotary electric machine described in the claim 5～8 forms.
11. according to each described permanent-magnet rotary electric machine in the claim 1～10, it is characterized in that,
Described permanent magnet is the half-conical shape.
12. according to each described permanent-magnet rotary electric machine in the claim 1～10, it is characterized in that,
Described permanent magnet is rectangular shape,
Described permanent-magnet rotary electric machine is the outer transition of described rotor configuration in the peripheral part of described stator,
Described slit is the standard-sized sheet slit of the circumferential thrust of the leading section that do not have the prominent utmost point of described stator, stator,
The combination of the slit number of the quantity of described permanent magnet and described stator is base unit with the quantity 10 of described permanent magnet with described slit several 12.
13. an elevator gear is characterized in that,
It uses each described permanent-magnet rotary electric machine in the claim 1～12.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009154523A JP2011015458A (en) | 2009-06-30 | 2009-06-30 | Permanent magnet type rotary electric machine, and elevator device using the same |
| JP2009-154523 | 2009-06-30 |
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| Publication Number | Publication Date |
|---|---|
| CN101938204A true CN101938204A (en) | 2011-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010118008XA Pending CN101938204A (en) | 2009-06-30 | 2010-02-10 | Permanent magnet rotary motor and elevator device employing the same |
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|---|---|
| JP (1) | JP2011015458A (en) |
| CN (1) | CN101938204A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104426313A (en) * | 2013-08-19 | 2015-03-18 | 发那科株式会社 | Electric motor having structure for reducing cogging torque |
| CN111555489A (en) * | 2019-02-08 | 2020-08-18 | 株式会社日立产业机器 | Rotating electrical machine and elevator hoist system |
| CN111919361A (en) * | 2018-03-30 | 2020-11-10 | 日本电产株式会社 | Rotor, motor, and electric power steering device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5857799B2 (en) * | 2012-02-29 | 2016-02-10 | アイシン・エィ・ダブリュ株式会社 | Hybrid excitation type rotating electric machine |
| JPWO2019159631A1 (en) * | 2018-02-15 | 2021-01-28 | 日本電産株式会社 | Rotor, motor and electric power steering device |
| JP2019187164A (en) * | 2018-04-16 | 2019-10-24 | 株式会社日立製作所 | Dynamo-electric machine, and elevator hoisting system |
| CN110266165B (en) * | 2019-07-11 | 2024-03-19 | 上海吉亿电机有限公司 | Permanent magnet traction motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11308795A (en) * | 1998-04-20 | 1999-11-05 | Mitsubishi Electric Corp | Permanent magnet type synchronous motor |
| JP2004208341A (en) * | 2002-11-05 | 2004-07-22 | Hitachi Ltd | Permanent magnet rotating electric machine |
| CN1855675A (en) * | 2005-04-28 | 2006-11-01 | 三菱电机株式会社 | Permanent-magnet synchronous electric motor and method for manufacturing same |
-
2009
- 2009-06-30 JP JP2009154523A patent/JP2011015458A/en not_active Withdrawn
-
2010
- 2010-02-10 CN CN201010118008XA patent/CN101938204A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11308795A (en) * | 1998-04-20 | 1999-11-05 | Mitsubishi Electric Corp | Permanent magnet type synchronous motor |
| JP2004208341A (en) * | 2002-11-05 | 2004-07-22 | Hitachi Ltd | Permanent magnet rotating electric machine |
| CN1855675A (en) * | 2005-04-28 | 2006-11-01 | 三菱电机株式会社 | Permanent-magnet synchronous electric motor and method for manufacturing same |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104426313A (en) * | 2013-08-19 | 2015-03-18 | 发那科株式会社 | Electric motor having structure for reducing cogging torque |
| CN104426313B (en) * | 2013-08-19 | 2017-06-23 | 发那科株式会社 | Reduce the motor of cogging torque |
| CN111919361A (en) * | 2018-03-30 | 2020-11-10 | 日本电产株式会社 | Rotor, motor, and electric power steering device |
| CN111919361B (en) * | 2018-03-30 | 2023-06-02 | 日本电产株式会社 | Rotor, motor, and electric power steering device |
| CN111555489A (en) * | 2019-02-08 | 2020-08-18 | 株式会社日立产业机器 | Rotating electrical machine and elevator hoist system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2011015458A (en) | 2011-01-20 |
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Application publication date: 20110105 |