WO2008059923A1 - Machine électrique rotative, compresseur, ventilateur et climatiseur - Google Patents

Machine électrique rotative, compresseur, ventilateur et climatiseur Download PDF

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Publication number
WO2008059923A1
WO2008059923A1 PCT/JP2007/072187 JP2007072187W WO2008059923A1 WO 2008059923 A1 WO2008059923 A1 WO 2008059923A1 JP 2007072187 W JP2007072187 W JP 2007072187W WO 2008059923 A1 WO2008059923 A1 WO 2008059923A1
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WO
WIPO (PCT)
Prior art keywords
rotating electrical
electrical machine
field element
face
peripheral side
Prior art date
Application number
PCT/JP2007/072187
Other languages
English (en)
Japanese (ja)
Inventor
Shin Nakamasu
Toshinari Kondou
Yoshinari Asano
Original Assignee
Daikin Industries, Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Daikin Industries, Ltd. filed Critical Daikin Industries, Ltd.
Publication of WO2008059923A1 publication Critical patent/WO2008059923A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • H02K16/04—Machines with one rotor and two stators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]

Definitions

  • the present invention relates to a rotating electrical machine, and more particularly, to a rotating electrical machine having two armatures.
  • a rotating electrical machine such as an electric motor is miniaturized and has high efficiency.
  • an electric motor that excites magnetic flux with a magnet can be reduced in size.
  • the torque generated in the rotating electric machine is proportional to the number of windings arranged in the armature, the current flowing through the windings, and the amount of magnetic flux interlinked with the windings.
  • the larger the size of the rotating electrical machine the greater the number of turns of the winding, and thus the amount of magnetic flux can be increased.
  • the larger the size of the rotating electrical machine the larger the magnetic pole area of the magnet provided in the field element, thereby increasing the amount of magnetic flux interlinked with the windings. Therefore, from the viewpoint of increasing the torque, the size of the rotating electrical machine is larger!
  • the coefficient Km can be expressed by equation (2).
  • symbol p is the number of pole pairs
  • symbol ⁇ is the maximum value of the amount of magnetic flux linked to the winding ⁇
  • symbol fs is the space factor of the winding
  • symbol St is the total cross-sectional area of the slot for winding
  • symbol P is The specific resistance of the winding
  • symbol 1 represents the average length of the coil.
  • the waveforms of current and magnetic flux were sine waves. Also, if the size of the rotating electrical machine is small In this case, most of the loss of the rotating electrical machine was copper loss, so iron loss was ignored.
  • Patent Document 2 discloses technologies related to the present invention.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2002-369467
  • Patent Document 2 Japanese Patent Laid-Open No. 2002-335658
  • Non-Patent Document 1 Kazuo Onishi, “Torque Evaluation of Permanent Magnet Motor and Examination of Optimal Structure”, IEEJ Transactions, D Industrial Application, 1995, Vol. 115, No. 7, 930-935 Page
  • Non-Patent Document 2 Mitsuyoshi Okawa, “Introduction to Permanent Magnet Magnetic Circuit”, General Electronic Publishing Company, pages 32 to 34
  • the present invention has been made in view of the above-described circumstances, and an object thereof is to downsize the rotating electrical machine while increasing the torque of the rotating electrical machine.
  • a rotating electric machine that is a force according to the first aspect of the present invention includes a field element (2) that has an annular shape around a predetermined axis (92), and a first element disposed on the outer peripheral side of the field element. 1 armature (11) and a second armature (12) disposed on the inner peripheral side of the field element, wherein the first armature is annular around the predetermined axis. A plurality of first teeth (111) that are arranged and respectively face the field element from the outer peripheral side, and a first winding (113) wound around each of the first teeth.
  • the first teeth include first and second end surfaces (11 la, 11 lb) that are oriented in one direction (91) along the predetermined axis and are sequentially arranged in the one direction.
  • the two armatures are annularly arranged around the predetermined axis, and are wound around each of the plurality of second teeth (121) facing the field element from the inner peripheral side and each of the second teeth.
  • Second made And the second teeth include third and fourth end faces (121a, 121b) that face in the one direction and are sequentially arranged in the one direction. The end surface of the second end surface recedes in the one direction with respect to the third end surface, and the second end surface recedes in a direction opposite to the one direction with respect to the fourth end surface.
  • the first distance (Wla), which is the distance between the first end face, is the third distance with respect to the second tooth among the outer ends (123a, 123b) of the second winding.
  • a rotating electrical machine that applies force to the second aspect of the present invention is the first aspect, wherein the one-way
  • the rotating electrical machine according to the third aspect of the present invention is the first or second aspect, wherein the end (113a) on the outer peripheral side of the first winding in one direction is described. 113b), the distance between the third end (113b) on the same side as the second end face (11 lb) with respect to the first tooth (111) and the second end face.
  • a third distance (Wlb) is outside the second winding.
  • a rotating electric machine that applies force to the fourth aspect of the present invention is the third aspect thereof, wherein the one-way
  • the rotating electrical machine according to the fifth aspect of the present invention is any one of the first to fourth aspects, wherein the first teeth (111) are arranged from the inner peripheral side to the outer peripheral side.
  • the first area (S1) which is the smallest of the cross-sectional areas with respect to the direction and the direction of force, is the direction of the cross-section with respect to the direction of the force and direction of the second tooth (121) from the inner periphery side to the outer periphery side. It is larger than the second area (S 2) which is the smallest of the areas.
  • the rotating electrical machine according to the sixth aspect of the present invention is the fifth aspect, wherein the ratio of the first area (S1) to the second area (S2) is The ratio of the distance (R1) from the predetermined axis (92) to the outer periphery of the field element (2) to the distance (R2) from the predetermined axis to the inner periphery of the field element is substantially the same. .
  • the rotating electrical machine according to the seventh aspect of the present invention is any one of the first to sixth aspects, wherein the field element (2) extends in the one direction (91).
  • the magnet (21) is present, and the length (L21) of the magnet is greater than the length (L121) of the second tooth (121) in the one direction.
  • the rotating electric machine according to the eighth aspect of the present invention is any one of the first to seventh aspects, wherein the field element (2) is provided on the predetermined shaft (92).
  • a core (22) having an annular shape around the core is provided, and the length (L22) of the core is larger than the length (L121) of the second tooth (121) in the one direction.
  • the rotating electric machine according to the ninth aspect of the present invention is the eighth aspect, wherein the field element is
  • (2) further includes a magnet (21) provided in the core (22) and extending in the one direction (91), and the length (L21) of the magnet in the one direction is Greater than length (L22).
  • the rotating electrical machine according to the tenth aspect of the present invention includes any one of the first to ninth aspects.
  • the field element (2) has a core (22) that has an annular shape around the predetermined axis (92), and the core has the first direction (91) in the first direction (91). Or the distance to the one end (22a) of the core at the same position (r2) force as the center position (rl l, rl 2) as seen from the field element side of the second teeth (11 1, 121) (L22a) is different from the distance (L22b) to the other end (22b)
  • the rotating electrical machine according to the eleventh aspect of the present invention is any one of the first to tenth aspects, wherein the first teeth (111) are arranged from the outer peripheral side to the inner peripheral side.
  • the cross section with respect to the direction (93) toward the side expands as it goes in that direction.
  • the rotating electrical machine according to the twelfth aspect of the present invention is any one of the first to eleventh aspects, wherein the second teeth (121) are arranged from the inner peripheral side to the outer peripheral side.
  • the cross section with respect to the direction of force (94) toward the side expands as it goes in that direction.
  • the compressor according to the thirteenth aspect of the present invention includes the rotating electrical machine according to any of the first to twelfth aspects as an electric motor.
  • a power blower according to the fourteenth aspect of the present invention mounts the rotating electrical machine according to any of the first to twelfth aspects as an electric motor.
  • the air conditioner according to the fifteenth aspect of the present invention includes at least one of the compressor according to the thirteenth aspect and the blower according to the fourteenth aspect.
  • the first rotating end surface is retracted in one direction with respect to the third end surface, and the second end surface is the fourth end surface. Therefore, the length of the first armature in one direction can be prevented from increasing. Therefore, even if the number of turns of the first winding is made larger than the number of turns of the second winding or the first winding is made thicker than the second winding, the rotating electrical machine does not increase in size. That is, while suppressing an increase in the size of the rotating electrical machine, it is possible to increase the torque of the rotating electrical machine by generating more magnetic flux in the first winding than in the second winding.
  • the rotating electric machine can increase the torque of the rotating electric machine while suppressing an increase in the size of the rotating electric machine.
  • the one armature is attached in one direction.
  • the length of the second armature in one direction can be substantially the same. Therefore, it is possible to increase the torque of the rotating electrical machine while suppressing an increase in the size of the rotating electrical machine.
  • the magnetic flux density of the magnetic flux flowing in the first tooth and the second tooth can be made substantially the same.
  • the first and second armatures are made substantially equal to each other so that the first and second armatures have the same operating point. Force S to maximize the amount of magnetic flux flowing through each of the armatures. Therefore, the torque of the rotating electrical machine can be increased.
  • the rotating electric machine which is the force in the eighth aspect of the present invention
  • the area of the air gap between the second armature and the field element is increased, so that the magnetic resistance of the air gap is reduced.
  • the magnetic flux generated by increasing the permeance coefficient of the magnet hereinafter referred to as “increasing the operating point”
  • the first and second A lot of magnetic flux can be linked to the windings. Therefore, it is possible to increase the torque S of the rotating electrical machine.
  • the rotating electric machine since the magnetic pole area of the magnet is increased, more magnetic flux can be generated, so that the first and second windings can be generated.
  • the amount of magnetic flux interlinking increases.
  • at least one of the ends in one direction of the magnet protrudes from the core, and the magnetic flux generated at the protruding portion of the magnet is guided to the core having a low magnetic resistance. Therefore, a short circuit of the magnetic flux at the end of the magnet is prevented.
  • most of the magnetic flux of the magnet can be linked to the first and second windings, so that the torque of the rotating electrical machine can be increased.
  • the rotating electric machine can generate a thrust force necessary for driving the rotating electric machine.
  • the rotating electric machine there is a gap between the first armature and the field element. Since the area of the air gap increases, the magnetic resistance of the air gap decreases. In a field element obtained by providing a magnet, the magnetic flux generated by increasing the operating point of the magnet can be increased, and a large amount of magnetic flux can be linked to the first and second windings. Therefore, it is possible to increase the speed of the rotating electric machine.
  • the rotating electric machine increases the area of the air gap between the second armature and the field element, so that the magnetic resistance of the air gap is reduced. To do.
  • a field element obtained by providing a magnet the magnetic flux generated by increasing the operating point of the magnet can be increased, and a large amount of magnetic flux can be linked to the first and second windings. Therefore, it is possible to increase the speed of the rotating electric machine.
  • the refrigerant can be efficiently compressed.
  • the air blower can send out the wind efficiently.
  • the air conditioner can efficiently adjust the temperature S.
  • FIG. 1 is a cross-sectional view conceptually showing a rotating electrical machine that is effective in the present invention.
  • FIG. 2 is a cross-sectional view conceptually showing a rotating electrical machine according to the present invention.
  • FIG. 3 is a sectional view conceptually showing the rotating electrical machine according to the present invention.
  • FIG. 4 is a cross-sectional view conceptually showing a rotating electrical machine according to the present invention.
  • FIG. 5 is an enlarged view of a region W1 shown in FIG.
  • FIG. 6 is a sectional view conceptually showing the rotating electrical machine according to the present invention.
  • FIG. 7 is a diagram showing the relationship between displacement X and magnetic energy Wg.
  • FIG. 1 and FIG. 2 conceptually show a rotating electrical machine 1 that is effective in the present invention.
  • the cross-sectional force perpendicular to the predetermined axis 92 that is the central axis of the rotating electrical machine 1 is shown in FIG. 2 as a cross-section at the position AA shown in FIG.
  • the rotating electrical machine 1 includes a field element 2 and armatures 11 and 12.
  • the field element 2 has an annular shape around a predetermined axis 92.
  • the field element 2 has a core 22 and a magnet 21.
  • the core 22 has an annular shape along a circumferential direction 95 around a predetermined axis 92.
  • the magnet 21 is provided on the core 22 and extends along a predetermined axis 92.
  • the magnet 21 may be embedded in the core 22 (FIGS. 1 and 2), or may be provided on at least one of the surfaces of the core 22 on the armatures 11 and 12 side.
  • the field element 2 may be composed of only the annular magnet 21.
  • FIG. 1 shows a case where the number of poles of the field element 2 is 4. Specifically, four magnets 21 are arranged in a ring around a predetermined axis 92. All of the magnets 21 have different polarities on the surfaces of the armatures 11 and 12 side. The adjacent magnets 21 along the circumferential direction 95 have different polarities on the surface on the armature 11 side.
  • the armature 11 includes a plurality of teeth 111, a yoke 112, and a winding 113, and is disposed on the outer peripheral side of the field element 2.
  • the yoke 112 has an annular shape around a predetermined axis 92.
  • Each of the teeth 111 is annularly arranged around a predetermined shaft 92, is connected to the yoke 112 from the inner peripheral side, and faces the field element 2 from the outer peripheral side.
  • Each of the teeth 11 1 has an end face 11 la, 11 lb. Both end faces 11 la and 11 lb are oriented in a direction along a predetermined axis 92.
  • the directional force from the end face 11 la to the end face 11 lb along the predetermined axis 92 is shown as one direction 91.
  • one direction 91 it is possible to grasp the end face 111a, 11 lb as follows. That is, the end faces 11 la and 11 lb face one direction 91 along the predetermined axis 92 and are sequentially arranged in the one direction 91.
  • Winding 113 is wound around each of teeth 111 and includes ends 113a and 113b. Ends 113a and 113bi, one direction 91 °, and the outer periphery of the spring 113 are the ends of the IJ.
  • the end 113ai and the teeth 111 are on the same side as the end face 11la, and the end 113b is on the same side as the end face 1 l ib with respect to the teeth 111.
  • the armature 12 includes a plurality of teeth 121, a yoke 122, and a winding 123, and is disposed on the inner peripheral side of the field element 2.
  • the yoke 122 is located around the predetermined shaft 92.
  • Each of the teeth 121 is annularly arranged around a predetermined axis 92 and is opposed to the yoke 122. Then, they are connected from the outer peripheral side and face the field element 2 from the inner peripheral side. Teeth 12
  • Each of 1 has end faces 121a and 121b.
  • the end faces 121a and 121b are both predetermined shafts 9
  • the end faces 121a and 121b can be grasped as follows using one direction 91 (Fig. 2) in the same manner as the end faces 111a and 11 lb. That is, the end surfaces 121a and 121b are in one direction along the predetermined axis 92.
  • Winding 123 is wound around each of teeth 121 and includes ends 123a and 123b. Ends 123a and 123bi, one direction 91 °, and the outer periphery of the winding spring 123 are the ends of IJ.
  • the end 123ai or tooth 121 is on the same side as the end face 121a, and the end 123b is the end face 1 with respect to the tooth 121.
  • Concentrated winding and distributed winding can be employed for winding the winding 113 around the teeth 111 and winding the winding 123 around the teeth 121, respectively.
  • series connection or parallel connection can be adopted for the connection of the windings 113 and 123.
  • a star connection, a delta connection, or the like can be used to connect the windings 113 and 123.
  • the teeth 111 and the teeth 121 have the following relationship. That is, the end surface 11 la is retracted in one direction 91 with respect to the end surface 121a. The end surface 111b is retracted in a direction opposite to the one-way 91 with respect to the end surface 121b.
  • the winding 113 and the winding 123 have the following relationship. That is, the distance Wla between the end 113a and the end surface 11 1 la is larger than the distance W2a between the end 123a and the end surface 121a. Also, the big separation between the end 113 b and the end face;! Is larger than the separation W2b between the end 123b and the end face 121b.
  • the end surface 11 la retracts in one direction 91 with respect to the end surface 121a, and the end surface 11 lb retracts in the opposite direction to the one direction 91 with respect to the end surface 121b.
  • the length L11 in one direction 91 of the armature 11 can be suppressed from increasing. Therefore, even if the number of turns of the winding 113 is made larger than that of the winding 123 or the winding 113 is made thicker than the winding 123, the rotating electrical machine 1 is not enlarged.
  • the force S is used to increase the torque of the rotating electrical machine 1 by generating more magnetic flux in the winding 113 than in the winding 123 while suppressing an increase in the size of the rotating electrical machine 1.
  • Fig. 1 shows the force and combination (P, Y) of the rotating electrical machine 1 of the combination of the number P of poles and the number Y of each of the teeth 111, 121 (P, Y) force 4, 6). It is possible to use other combinations for Y), and the same effect as the above-described rotating electrical machine 1 can be obtained.
  • the length L11 of the armature 11 and the length L12 in one direction 91 of the armature 12 can be made substantially the same. Therefore, it is possible to increase the torque of the rotating electrical machine 1 while suppressing an increase in the size of the rotating electrical machine 1.
  • the position of the end 113a of the winding 113 may be shifted in a direction opposite to the one direction from the position of the end 123a of the winding 123.
  • the mode of force is shown in Figure 3! /
  • the rotating electrical machine 1 shown in FIG. 3 further includes a rotating shaft 99 and an end plate 5.
  • End plate 5 is unidirectional
  • the field element 2 is connected to the rotating shaft 99 through the end plate 5.
  • the ability to wind 113 around teeth 111 is S. Therefore, the magnetic flux generated in the armature 11 can be increased without significantly increasing the size of the rotating electrical machine 1, and thus the torque of the rotating electrical machine 1 can be increased.
  • the position of the end 113b of the winding 113 may be shifted in one direction from the position of the end 123b of the winding 123.
  • FIG. 1 shows the cross-sectional area S 1 of the teeth 111 with respect to the direction and the direction of the force from the inner peripheral side to the outer peripheral side.
  • Area S1 is the smallest of the cross-sectional areas of teeth 111.
  • the cross-sectional area S 2 of the teeth 121 with respect to the direction from the inner peripheral side to the outer peripheral side and the direction of the teeth.
  • Area S2 is the smallest of the cross-sectional areas of teeth 121.
  • the area S1 is preferably larger than the area S2.
  • the ratio force of the area S1 to the area S2 is substantially the same as the ratio to the distance R2 from the predetermined axis 92 to the inner periphery of the field element 2 Is done.
  • the magnetic flux density of the interlinkage magnetic flux flowing through the teeth 111 and the magnetic flux density of the interlinkage magnetic flux flowing through the teeth 121 can be made substantially the same for the magnetic flux of the field element 2.
  • the magnetic resistances of the armatures 11, 12 are substantially equal to each other so that the armatures 11, 12 have the same operating point. The amount of magnetic flux flowing through each can be maximized. Therefore, it is measured by the force that increases the torque of the rotating electrical machine 1.
  • the magnetic flux density of the interlinkage magnetic flux is made substantially the same in the teeth 111 and 121, so that the magnetic resistance in the teeth 111 and the magnetic resistance in the teeth 121 are made almost the same. Touch with force S.
  • FIG. 4 is a cross section of the rotating electrical machine 1 at the position A—A shown in FIG. 1, and conceptually shows the shapes of the teeth 111 and the teeth 121.
  • the teeth 111 have a direction force from the outer peripheral side to the inner peripheral side, and a cross-sectional force with respect to the lateral direction 93.
  • the teeth 121 have a direction force from the inner peripheral side to the outer peripheral side, a cross-sectional force with respect to the direction 94, and expand in the direction 94. According to the force and the shape, much of the magnetic flux flowing from the field element 2 can be guided to the teeth 121. Moreover, as described above, the magnetic resistance of the air gap between the armature 12 and the field element 2 is reduced.
  • FIG. 5 is an enlarged view of the region W1 surrounded by the alternate long and short dash line in FIG. Teeth 12
  • Teeth 111 is the same as Teeth 111.
  • the teeth 111 have magnetic bodies 51 and 52.
  • the magnetic body 51 extends from the yoke 112 in the same direction as the direction 93 in which the teeth 111 to which the magnetic body 51 belongs are projected.
  • the magnetic body 52 is provided at one end 51 a in the direction 91 of the magnetic body 51. Magnetic body 52
  • the other end 51b in the direction 91 of the magnetic body 51 can also be provided.
  • the magnetic body 52 is integral and includes a root portion 521 and a flange portion 522.
  • the root portion 521 extends from the yoke in the same direction as the direction 93 in which the tooth 111 to which the root portion 521 belongs protrudes.
  • the flange 522 extends from the end of the root 521 opposite to the yoke 112 to the side opposite to the magnetic body 51. In FIG. 5, the collar 522 extends along the direction 91.
  • the magnetic body 52 is integrated, so that the root portion 521 and the flange portion 522 can be formed simply by bending the plate-like magnetic body 52, for example. Is easy to form.
  • the magnetic body 51 may include a plurality of magnetic plates 511 stacked in the direction 91. According to the magnetic body 51, iron loss can be reduced.
  • the length L21 in one direction 91 of the magnet 21 is larger than the length L121 in one direction 91 of the tooth 121.
  • the magnetic pole area of the magnet 21 can be increased, so that a large amount of magnetic flux can be linked to the windings 113 and 123, thereby increasing the torque of the rotating electrical machine 1.
  • the length L21 is larger than the length L22 in one direction 91 of the core 22 (FIGS. 2 to 4).
  • at least one of the ends 21 a and 21 b in one direction 91 of the magnet 21 protrudes from the core 22.
  • the magnetic flux generated at the protruding portion of the magnet 21 is guided to the core 22 having a low magnetic resistance. Therefore, the projecting ends 21a and 21b prevent the magnetic flux from being short-circuited to one force of the magnetic pole surface of the magnet 21 and the other.
  • FIGS. 2 to 4 show the cases where the ends 21a and 21b are protruded from the core 22! /.
  • FIGS. 2 to 4 further show the case where the length of the core 22 is greater than the length L 121 of the force tooth 121.
  • the force the area of the air gap between the armature 12 and the field element 2 is increased, so that the magnetic resistance of the air gap is reduced.
  • the field element 2 obtained by providing the magnet 21 most of the magnetic flux of the magnet 21 can be linked to the windings 113 and 123 by increasing the operating point of the magnet. Therefore, the force S to increase the torque of the rotating electrical machine 1 is reduced.
  • FIG. 6 is a cross section of the rotating electrical machine 1 at the position A—A shown in FIG. 1, and conceptually shows the shape of the field element 2.
  • the tooth 111 has a center at a position rl l as viewed from the field element 2 side.
  • the tooth 121 has a center at the position r 12 as viewed from the field element 2 side.
  • the field element 2 has a distance L22a from the same position r2 as the position rl l or the position rl 2 to the one end 22a of the core 22 and a distance L22b to the other end 22b. .
  • the distance L22b is larger than the distance L22a.
  • FIG. 6 shows the case where the position rl 1 and the position rl 2 coincide with each other in one direction 91! /.
  • the thrust S required to generate the thrust force required to drive the rotating electrical machine 1 is used.
  • the position of the center of the field element 2 is displaced from the center position rl l, rl 2 of the tooth 111 or the tooth 121 in the one direction 91.
  • the position of the center of the field element 2 is displaced from the position rl l, rl 2 of the center of the teeth 111 or 121 in the direction opposite to the one direction 91.
  • the distance L22a from the position r2 and the distance L22b can be made different. At this time, as described below, the magnitude of the displacement of the field element 2 with respect to the teeth 1 11 and 121 is small. Even so, the necessary thrust force can be generated.
  • FIG. 7 shows the magnitude of the displacement of the field element 2 with respect to the teeth 111 and 121 (hereinafter simply referred to as “displacement”) x (horizontal axis) and the magnetic energy Wg stored in the air gap (vertical axis ).
  • Increasing the displacement X to the value xl hardly reduces the magnetic energy Wg. This is because the air gap magnetic flux density hardly decreases.
  • the displacement X is in the range from the value xl to the value x2, the magnetic energy Wg decreases remarkably as the displacement X increases.
  • the magnetic energy Wg asymptotically approaches 0 as the displacement X further increases from the value x2.
  • the thrust force is obtained by differentiating the magnetic energy Wg expressed as a function of the displacement X with respect to the displacement X.
  • the relationship between the displacement X and the magnetic energy Wg of a rotating electrical machine provided with only one armature is indicated by a broken line 201. It can be seen that the rotating electrical machine has a smaller change amount (differentiation at the displacement X) with respect to the displacement X of the magnetic energy Wg than the rotating electrical machine 1. That is, when the displacement X is between the value xl and the value x2, the rotating electrical machine 1 has a significant thrust force because the change amount of the magnetic energy Wg is large even if the change amount of the displacement X is small. Change.
  • the thrust force can suppress vibration in one direction 91 of the rotating electrical machine 1.
  • the rotating electrical machine 1 when the rotating electrical machine 1 is mounted on a compressor or the like, noise due to vibration can be reduced.
  • the rotating electrical machine 1 is mounted on a playback device such as a DVD (Digital Versatile Disk) or a recorder and used as an actuator, the power S can be reduced by reducing errors in reading and writing.
  • a DVD Digital Versatile Disk
  • any of the rotating electrical machines 1 described above can be mounted on, for example, a compressor that compresses a refrigerant, an air blower that blows air, or the like.
  • the power, the compressor and the blower can be installed on the air conditioner.
  • small rotating electrical machines are installed. It is desirable to employ a rotating electrical machine 1 that requires power to the present invention and is suitable for the present invention.
  • the rotating electrical machine 1 can be driven as a generator, for example.
  • the end surface 11 la may protrude in the direction opposite to the one direction 91 with respect to the end surface 121a, or the end surface 111b may be in one direction with respect to the end surface 121b.

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  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

Une armature (11) est placée du côté périphérique extérieur d'un élément de champ (2). Des dents (111) font face à l'élément de champ (2) à partir du côté périphérique extérieur. Les dents (111) incluent des faces frontales (111a, 111b) orientées dans une direction (91) le long d'un axe prédéterminé (92) et disposées séquentiellement dans cette direction (91). L'armature (12) est placée du côté périphérique intérieur de l'élément de champ (2). Des dents (121) incluent des faces frontales (121a, 121b) orientées dans la direction (91) le long de l'axe prédéterminé (92) et disposées séquentiellement dans cette direction (91). La face frontale (111a) est éloignée par rapport à la face frontale (121a) dans la direction (91) en question. La face frontale (111b) est éloignée par rapport à la face frontale (121b) dans la direction opposée à cette direction (91). La distance (W1a) entre une extrémité (113a) d'un fil d'enroulement (113) et la face frontale (111a) est supérieure à la distance (W2a) entre une extrémité (123a) d'un fil d'enroulement (123) et la face frontale (121a).
PCT/JP2007/072187 2006-11-16 2007-11-15 Machine électrique rotative, compresseur, ventilateur et climatiseur WO2008059923A1 (fr)

Applications Claiming Priority (2)

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JP2006310161A JP5194436B2 (ja) 2006-11-16 2006-11-16 回転電機、圧縮機、送風機、空気調和機
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JP5446213B2 (ja) * 2008-11-04 2014-03-19 株式会社豊田中央研究所 動力伝達装置
JP5867626B2 (ja) 2012-12-28 2016-02-24 株式会社Ihi ダブルステータ型スイッチトリラクタンス回転機
JP5867628B2 (ja) * 2013-01-10 2016-02-24 株式会社Ihi ダブルステータ型スイッチトリラクタンス回転機

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JPH02254952A (ja) * 1989-03-28 1990-10-15 Mitsubishi Electric Corp 電動機
JP2004260970A (ja) * 2003-02-27 2004-09-16 Toyota Motor Corp 電動機および電動機システム
WO2006092924A1 (fr) * 2005-02-28 2006-09-08 Daikin Industries, Ltd. Corps magnetique, rotor, moteur, compresseur, ventilateur, climatiseur, et climatiseur embarque

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02254952A (ja) * 1989-03-28 1990-10-15 Mitsubishi Electric Corp 電動機
JP2004260970A (ja) * 2003-02-27 2004-09-16 Toyota Motor Corp 電動機および電動機システム
WO2006092924A1 (fr) * 2005-02-28 2006-09-08 Daikin Industries, Ltd. Corps magnetique, rotor, moteur, compresseur, ventilateur, climatiseur, et climatiseur embarque

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