WO2011101886A1 - Génératrice synchrone - Google Patents

Génératrice synchrone Download PDF

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Publication number
WO2011101886A1
WO2011101886A1 PCT/JP2010/000947 JP2010000947W WO2011101886A1 WO 2011101886 A1 WO2011101886 A1 WO 2011101886A1 JP 2010000947 W JP2010000947 W JP 2010000947W WO 2011101886 A1 WO2011101886 A1 WO 2011101886A1
Authority
WO
WIPO (PCT)
Prior art keywords
stator
ring member
inner ring
synchronous generator
fixed protrusions
Prior art date
Application number
PCT/JP2010/000947
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English (en)
Japanese (ja)
Inventor
多久征吾
Original Assignee
東芝三菱電機産業システム株式会社
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 東芝三菱電機産業システム株式会社 filed Critical 東芝三菱電機産業システム株式会社
Priority to CN201080063779.1A priority Critical patent/CN102754318B/zh
Priority to JP2012500371A priority patent/JPWO2011101886A1/ja
Priority to PCT/JP2010/000947 priority patent/WO2011101886A1/fr
Publication of WO2011101886A1 publication Critical patent/WO2011101886A1/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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K19/00—Synchronous motors or generators
    • H02K19/16—Synchronous generators
    • H02K19/22—Synchronous generators having windings each turn of which co-operates alternately with poles of opposite polarity, e.g. heteropolar generators
    • H02K19/24—Synchronous generators having windings each turn of which co-operates alternately with poles of opposite polarity, e.g. heteropolar generators with variable-reluctance soft-iron rotors without winding

Definitions

  • the present invention relates to a synchronous generator having a field winding on a stator.
  • a permanent magnet type synchronous generator In a permanent magnet type synchronous generator, a rotor is generally provided with a permanent magnet, and a stator has an armature winding. A static magnetic field is formed by this permanent magnet.
  • Such a permanent magnet type synchronous generator uses a lot of expensive neodymium permanent magnets, and is therefore expensive.
  • a high-cost permanent magnet type synchronous generator there is one that uses a synchronous generator that excites a static magnetic field in the stator.
  • a synchronous generator as disclosed in Patent Document 1 is known.
  • stators of a synchronous generator that excites a static magnetic field have a protruding portion that protrudes radially inward on the inner peripheral surface of a ring-shaped member.
  • the projecting portion is provided with a field winding for exciting a static magnetic field and an armature winding for generating an electromotive force.
  • the rotor side often has a magnetic pole protruding in the radial direction on the outer peripheral surface of a ring made of a magnetic material.
  • cogging torque When the rotor rotates, cogging torque may occur when the protrusions of the stator and the magnetic poles of the rotor intersect each other.
  • vibration When the value of the cogging torque is increased, vibration such as noise is generated. This vibration is a factor that reduces power generation efficiency and the like.
  • the present invention has been made to solve the above-described problems, and an object of the present invention is to reduce cogging torque generated when a synchronous generator that excites a static magnetic field generates power.
  • a synchronous generator includes a plurality of projecting magnetic pole portions formed so as to project radially outward from an outer peripheral surface and are arranged at intervals in the circumferential direction.
  • a stator comprising two stator cores and an armature winding formed by winding a coil around each of the fixed protrusions in the radial direction; and covering the stator from the outside in the radial direction, Fixed
  • the inner ring member constituting the inner ring member group has a circumferential position between the projecting magnetic pole portions adjacent to each other in the axial direction. It arrange
  • the synchronous generator according to the present invention includes an outer ring in which a plurality of fixed protrusions formed so as to protrude radially inward from the inner peripheral surface are arranged at intervals in the circumferential direction.
  • a stator core group in which a plurality of cylindrical members are laminated in the axial direction to form a static magnetic field, and an armature winding formed by winding a coil around each of the fixed protrusions in the radial direction.
  • a plurality of projecting magnetic pole portions that are disposed radially inward of the outer ring-shaped member and project outward from the outer peripheral surface in the radial direction so as to face each of the fixed projecting portions in the circumferential direction.
  • the rotor is composed of at least one inner ring member made of a magnetic material and arranged at a distance from each other, and is configured to rotate around an axis.
  • the stator is covered from the outside in the radial direction, and the stator is fixed. I will do it
  • FIG. 2 is a schematic diagram showing a part of the stator of the synchronous generator according to the first embodiment of the present invention and a part of the rotor pair on the first rotor core side in a linearly expanded circumferential direction when viewed from the axial direction.
  • FIG. It is a schematic perspective view which shows the state which expand
  • FIG. 3 is a schematic perspective view showing a set of armature windings and field windings formed on a first stator core of the first stator of FIG. 2. It is a schematic perspective view which shows a part of rotor pair of FIG. 5 is a graph showing a relationship between time and armature voltage when the rotor pair is rotating when the rotor pair of FIG. 4 is used. It is a front view which shows the example which generates a three-phase electromotive force with the synchronous generator of FIG. It is a schematic perspective view which shows the synchronous generator which concerns on the 2nd Embodiment of this invention. It is a schematic perspective view which shows the state which expand
  • FIG. 1 shows a part of the stator pair 20 of the synchronous generator according to the present embodiment and a part of the rotor pair 10 on the first rotor core 16a side as viewed in the axial direction and linearly developed in the circumferential direction. It is a typical front view shown.
  • 2 is a schematic perspective view showing a state in which the stator pair 20 and the rotor pair 10 and the like of the synchronous generator of FIG. 1 are developed in the direction of the rotation axis, where (a) shows the rotor pair 10 and (b).
  • FIG. 3 is a schematic perspective view showing an armature winding 26, a field winding 25, and the like formed on the stator core 22 formed on the stator pair 20 of FIG.
  • FIG. 4 is a schematic perspective view showing a part of the rotor pair 10 of FIG.
  • FIG. 5 is a graph showing the relationship between time and armature voltage when the rotor pair 10 is rotating when the rotor pair 10 of FIG. 4 is used.
  • FIG. 6 is a front view showing an example of generating a three-phase electromotive force in the synchronous generator of FIG.
  • the synchronous generator of the present embodiment includes a rotor pair 10 having two ring-shaped rotor cores that can rotate around a horizontal axis 70, and a stator pair 20 that covers the rotor pair 10 from the outside in the radial direction. And a housing 30 for covering the stator pair 20 from the outside in the radial direction and fixing the stator pair 20.
  • the rotor pair 10 has two ring-shaped rotor cores configured to be rotatable around a horizontal axis, that is, a first rotor core 16a and a second rotor core 16b, which are stacked in the axial direction. Has been configured. These are formed of a magnetic material such as a silicon steel plate. The first rotor core 16a and the second rotor core 16b are configured to rotate integrally.
  • a plurality of first protruding magnetic pole portions 12a are formed on the outer peripheral surface of the first rotor core 16a so as to protrude outward in the radial direction. These first protruding magnetic pole portions 12a are arranged at intervals in the circumferential direction. The circumferential intervals between the first protruding magnetic pole portions 12a are configured to be equal.
  • a plurality of second protruding magnetic pole portions 12b are formed on the outer peripheral surface of the second rotor core 16b. The second protruding magnetic pole portions 12b are arranged at intervals in the circumferential direction so that the circumferential intervals between the second protruding magnetic pole portions 12 are equal.
  • the central angle formed by each of the adjacent first protruding magnetic pole portions 12a and the shaft 70 is configured to be equal to the central angle formed by each of the adjacent second protruding magnetic pole portions 12b and the shaft 70. ing.
  • the first and second protruding magnetic pole portions 12a and 12b are arranged so that their respective circumferential positions are different, that is, shifted in the circumferential direction.
  • a rotating shaft (not shown) that rotates around a horizontal shaft 70 is disposed inside the rotor pair 10.
  • the rotor pair 10 is fixed to the rotation shaft and rotates together with the rotation shaft.
  • the stator pair 20 has a first stator 20a and a second stator 20b.
  • the first stator 20a includes a first stator core 22a, an armature winding 26 disposed in the first stator core 22a, and a field winding disposed in the vicinity of the armature winding 26. 25.
  • the second stator 20b includes a second stator core 22b, an armature winding 26 disposed on the second stator core 22b, and a field winding 25 disposed in the vicinity of the armature winding 26. And having.
  • Each of the first and second stator cores 22a and 22b is a ring-shaped member made of a magnetic material as shown in FIG. 2B, and each of the first and second rotor cores 16a and 16b is in the radial direction. It is configured to cover from the outside.
  • a plurality of first fixed protrusions 24a and a plurality of second fixed protrusions 24b protruding inward in the radial direction are formed on the inner peripheral surfaces of the first and second stator cores 22a and 22b.
  • Each of these first fixed projecting portions 24a is arranged at intervals in the circumferential direction and can face each of the plurality of first projecting magnetic pole portions 12a formed on the first rotor core 16a.
  • each of the second fixed protrusions 24b is arranged in the circumferential direction with a space therebetween, and can be opposed to each of the plurality of second protrusion magnetic pole parts 12b formed on the second rotor core 16b.
  • each of the adjacent first protruding protrusions 24a and the shaft 70 is configured to be equal to the central angle formed by each of the adjacent first protruding magnetic pole portions 12a and the shaft 70.
  • the central angle formed by each of the adjacent second fixed protruding portions 24b and the shaft 70 is configured to be equal to the central angle formed by each of the adjacent second protruding magnetic pole portions 12b and the shaft 70. ing.
  • the first stator core 22a is formed of, for example, silicon steel or the like, and is configured to be divided for each first fixed protrusion 24a. That is, in the first stator core 22a, a plurality of members including the fixed protrusions 24a shown in FIG. 3 are arranged in the circumferential direction to form one ring. In this example, a lump of silicon steel provided with field windings 25 and armature windings 26 is arranged in the circumferential direction to form one ring. The lump may be formed by laminating silicon steel plates in the axial direction.
  • the second fixed core 22b is configured in the same manner as the first stator core 22a.
  • the circumferential positions of the first fixed protrusions 24a and the second fixed protrusions 24b are arranged to be the same. That is, when the stator pair 20 is viewed from the axial direction, the first fixed protrusion 24a and the second fixed protrusion 24b appear to overlap.
  • Each of the first fixed protrusions 24a and the second fixed protrusions 24b is provided with a field winding 25 formed by winding a coil around the protrusion direction (radial direction).
  • a static magnetic field is formed in the stator pair 20.
  • a static magnetic field is formed such that the direction of the magnetic flux becomes the arrow A in FIG.
  • armature windings 26 are provided on the inner sides in the radial direction of the field windings 25 in the first fixed protrusions 24a and the second fixed protrusions 24b, respectively. Similar to the field winding 25, these armature windings 26 are formed by winding coils around the radial direction.
  • the synchronous generator is configured to generate an electromotive force or the like by these armature windings 26.
  • the first inner tip surface 29a facing the radially inner side of each first fixed protrusion 24a is spaced apart from the first outer tip surface 14a facing the radially outer side of the first protruding magnetic pole portion 12a by a predetermined distance in the radial direction. Is arranged to keep.
  • the second inner tip surface 29b facing the radially inner side of each of the second fixed projecting portions 24b and the second outer tip surface 14b facing the radially outer side of each of the second projecting magnetic pole portions 12b are in the radial direction. Are arranged so as to maintain a predetermined distance from each other.
  • stator pair 20 is fixed by the housing 30 as described above.
  • the outer tip surfaces 14 a and 14 b of the projecting magnetic pole portions 12 a and 12 b of the rotor pair 10 are substantially flat surfaces, but are more circumferential than both circumferential ends.
  • a partial cylindrical surface whose center slightly protrudes radially outward may be used.
  • each first outer tip surface of each of the first protruding magnetic pole portions 12a. 14a intersect each of the first inner tip surfaces 29a in the radial direction.
  • the second outer tip surface 14b of the second projecting magnetic pole portion 12b moves while intersecting the second inner tip surface 29b in the radial direction after the first outer tip surface 14a intersects the first inner tip portion 29a.
  • the timings at which 29b intersect each other are configured to alternate.
  • the armature voltage changes according to the distance between the first and second outer tip surfaces 14a and 14b and the first and second inner tip surfaces 29a and 29b, respectively.
  • the first armature voltage obtained when the first outer tip surface 14a and the first inner tip surface 29a intersect each other has a waveform indicated by a dotted line.
  • the first armature voltage becomes maximum, it corresponds to when the first outer tip surface 14a of the first projecting magnetic pole portion 12a overlaps the first inner tip surface 29a in the radial direction, and becomes the minimum.
  • the first protruding magnetic pole portion 12a is between the adjacent first fixed protruding portions 24a.
  • the second armature voltage obtained when the second outer tip surface 14b and the second inner tip surface 29b intersect each other has a waveform indicated by a two-dot chain line.
  • the second armature voltage becomes maximum when the second outer tip surface 14b overlaps the second inner tip surface 29b in the radial direction, and when the second armature voltage becomes minimum, the second projecting magnetic pole portion This corresponds to when 12b is located between the adjacent second fixed protrusions 24b.
  • the first rotor core 16a and the second rotor core 16b rotate integrally, a synthesized armature obtained by synthesizing the first armature voltage and the second armature voltage with each other.
  • the voltage is the armature voltage obtained by the synchronous generator of this embodiment.
  • the rotor pair 10 of the present embodiment is configured such that the circumferential positions of the first protruding magnetic pole portion 12a and the second protruding magnetic pole portion 12b are different from each other.
  • the second armature voltage is delayed by a predetermined time with respect to the first armature voltage.
  • the waveform of the synthesized armature voltage obtained by synthesizing the first armature voltage and the second armature voltage with each other is compared with the waveforms of the first armature voltage and the second armature voltage.
  • the slope of the armature voltage near zero becomes gentle. Therefore, the waveform of the composite armature voltage is a waveform closer to a sine wave than the waveforms of the first armature voltage and the second armature voltage.
  • first fixed protrusions 24 arranged adjacent to each other in the circumferential direction constitute one fixed protrusion 24 group.
  • there are three fixed protruding portion groups that is, a first fixed protruding portion group 41, a second fixed protruding portion group 42, and a third fixed protruding portion group 43.
  • the first to third fixed projecting portion groups 41, 42, 43 are arranged at intervals in the circumferential direction.
  • the first to third fixed protruding portion groups 41, 42, 43 are arranged so that the circumferential interval is larger than the interval between the first fixed protruding portions 24a adjacent to each other.
  • the second stator 20b is configured similarly.
  • the first to third fixed protrusion groups 41, 42, and 43 generate one-phase electromotive force, and the first to third fixed protrusion groups 41, 42, and 43 generate three-phase electromotive force.
  • the first projecting magnetic pole portion 12a and the second projecting magnetic pole portion 12b are configured so that the circumferential positions thereof are different from each other, whereby the armature voltage waveform is changed to a sine wave. Get closer. As a result, the cogging torque of the synchronous generator can be suppressed.
  • FIG. 7 is a schematic perspective view showing the synchronous generator according to the present embodiment.
  • this embodiment is a modification of 1st Embodiment, Comprising: The same code
  • the combination of the stator pair 20 and the rotor pair 10 shown in FIG. 2 described in the first embodiment is arranged in three layers in the axial direction, and the first generator layer 51 and the second generator are arranged.
  • the synchronous generator which has the layer 52 and the 3rd generator layer 53 is comprised. Each layer is configured to generate an electromotive force corresponding to one phase and to generate a three-phase electromotive force in the first to third generator layers 51, 52, and 53.
  • FIG. 8 is a schematic perspective view showing a state in which the stator pair 20 and the rotor pair 10 and the like of the synchronous generator according to the present embodiment are developed in the rotation axis direction.
  • b) shows a stator pair 20,
  • c) shows a housing 30, and
  • d) shows a state where a synchronous generator is assembled.
  • this embodiment is a modification of 1st Embodiment, Comprising: The same code
  • the first protruding magnetic pole portion 12a and the second protruding magnetic pole portion 12b of the rotor pair 10 are arranged so that the circumferential positions thereof are different from each other, and the first fixed protruding portion 24a of the stator pair 20 and It arrange
  • the first fixed projecting portions 24a and the second fixed projecting portions 24b of the stator pair 20 are arranged so that the circumferential positions thereof are different from each other, and the first projecting magnetic poles of the rotor pair 10 are disposed.
  • the portion 12a and the second protruding magnetic pole portion 12b are arranged so that the circumferential positions thereof are the same.
  • the synchronous generator configured as described above has a timing at which the first outer tip surface 14a and the first inner tip surface 29a intersect each other when the rotor pair 10 rotates,
  • the timing at which the second outer tip surface 14b and the second inner tip surface 29b intersect each other is different.
  • the static magnetic field is formed by providing the field winding 25 in the stator pair 20, but the present invention is not limited to this. For example, if it is a comparatively small thing, it is also possible to arrange
  • a stator in which the first stator 20a and the second stator 20b of the stator pair 20 of the first embodiment are integrally formed may be used.
  • the axial width of the stator in this case may be formed so as to be substantially the same as the axial width of the rotor pair 10.
  • a rotor core in which the first rotor core 16a and the second rotor core 16b of the rotor pair 10 of the third embodiment are integrally formed can be used.
  • the axial width of the rotor core in this case may be formed so as to be substantially the same as the axial width of the stator pair 20.
  • the synchronous generator of 1st Embodiment has the two rotor cores 16a and 16b, it is not restricted to this. Three or more rotor cores may be stacked in the axial direction so that the circumferential positions of the projecting magnetic pole portions of the respective rotor cores are different.
  • the synchronous generator of 3rd Embodiment has two stators 20a and 20b, it is not restricted to this. Three or more stators may be stacked in the axial direction, and the fixed protrusions formed on the respective stators may be arranged so that the circumferential positions thereof are different.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Synchronous Machinery (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

L'invention porte sur une génératrice synchrone, laquelle comporte une paire de rotors (10), qui est formée par empilement, dans une direction axiale, de premier et second noyaux de rotors (16a, 16b) formés d'un corps magnétique et une paire de stators (20) qui recouvre la paire de rotors (10) par l'extérieur dans la direction radiale. Les premier et second pôles magnétiques saillants (12a, 12b) qui font saillie radialement vers l'extérieur sur les surfaces périphériques antérieures des premier et second noyaux de rotor (16a, 16b) sont agencés de telle sorte qu'il y a des espaces libres entre eux dans la direction circonférentielle. Les premier et second noyaux de rotors (16a, 16b) sont agencés de telle sorte que les pôles magnétiques saillants axialement adjacents (12a, 12b) sont décalés dans la direction circonférentielle. La paire de stators (20) comprend : des noyaux de stators (22a, 22b) qui ont un champ magnétique statique qui est formé par un élément annulaire extérieur sur lequel sont arrangées une pluralité de saillies fixes qui font saillie vers l'intérieur dans une direction radiale à partir du bord intérieur de ladite paire de stators (20) et qui entourent la paire de rotors (10) par l'extérieur dans la direction radiale ; et un enroulement d'induit qui est bobiné autour de chaque saillie fixe dans la direction radiale.
PCT/JP2010/000947 2010-02-16 2010-02-16 Génératrice synchrone WO2011101886A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201080063779.1A CN102754318B (zh) 2010-02-16 2010-02-16 同步发电机
JP2012500371A JPWO2011101886A1 (ja) 2010-02-16 2010-02-16 同期発電機
PCT/JP2010/000947 WO2011101886A1 (fr) 2010-02-16 2010-02-16 Génératrice synchrone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2010/000947 WO2011101886A1 (fr) 2010-02-16 2010-02-16 Génératrice synchrone

Publications (1)

Publication Number Publication Date
WO2011101886A1 true WO2011101886A1 (fr) 2011-08-25

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Application Number Title Priority Date Filing Date
PCT/JP2010/000947 WO2011101886A1 (fr) 2010-02-16 2010-02-16 Génératrice synchrone

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CN (1) CN102754318B (fr)
WO (1) WO2011101886A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7205272B2 (ja) * 2019-02-08 2023-01-17 株式会社デンソー 電機子及び回転電機
TWI808910B (zh) * 2022-10-11 2023-07-11 迅能全新智慧科技有限公司 節能驅動發電機

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5395104U (fr) * 1976-12-30 1978-08-03
JPS5885472U (ja) * 1981-12-07 1983-06-09 デンヨ−株式会社 複数の出力を有する溶接機
JPH089609A (ja) * 1994-06-17 1996-01-12 Osaka Seimitsu Denki Kosakusho:Kk エンジン駆動アーク溶接機
JP2001128426A (ja) * 1999-10-28 2001-05-11 Tamagawa Seiki Co Ltd バリアブルリラクタンスシンクロ
JP2002153027A (ja) * 2000-11-14 2002-05-24 Mitsubishi Heavy Ind Ltd 多冗長度永久磁石形電動機
JP2005529576A (ja) * 2002-06-04 2005-09-29 ウェイブクレスト ラボラトリーズ リミテッド ライアビリティ カンパニー 複数のシフトされたステータ磁極及び／又はロータ磁極を有する回転電動モータ

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7012350B2 (en) * 2001-01-04 2006-03-14 Emerson Electric Co. Segmented stator switched reluctance machine
CN201167272Y (zh) * 2008-02-29 2008-12-17 佑亮精密股份有限公司 多层发电装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5395104U (fr) * 1976-12-30 1978-08-03
JPS5885472U (ja) * 1981-12-07 1983-06-09 デンヨ−株式会社 複数の出力を有する溶接機
JPH089609A (ja) * 1994-06-17 1996-01-12 Osaka Seimitsu Denki Kosakusho:Kk エンジン駆動アーク溶接機
JP2001128426A (ja) * 1999-10-28 2001-05-11 Tamagawa Seiki Co Ltd バリアブルリラクタンスシンクロ
JP2002153027A (ja) * 2000-11-14 2002-05-24 Mitsubishi Heavy Ind Ltd 多冗長度永久磁石形電動機
JP2005529576A (ja) * 2002-06-04 2005-09-29 ウェイブクレスト ラボラトリーズ リミテッド ライアビリティ カンパニー 複数のシフトされたステータ磁極及び／又はロータ磁極を有する回転電動モータ

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JPWO2011101886A1 (ja) 2013-06-17
CN102754318B (zh) 2016-04-27
CN102754318A (zh) 2012-10-24

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