WO2003003540A1 - Generateur a aimants permanents possedant un pont electrique - Google Patents

Generateur a aimants permanents possedant un pont electrique Download PDF

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Publication number
WO2003003540A1
WO2003003540A1 PCT/CN2002/000456 CN0200456W WO03003540A1 WO 2003003540 A1 WO2003003540 A1 WO 2003003540A1 CN 0200456 W CN0200456 W CN 0200456W WO 03003540 A1 WO03003540 A1 WO 03003540A1
Authority
WO
WIPO (PCT)
Prior art keywords
permanent magnet
magnetic
generator
armature
bridge
Prior art date
Application number
PCT/CN2002/000456
Other languages
English (en)
Chinese (zh)
Inventor
Hebin Bai
Xinghua Xiao
Pingxuan Peng
Original Assignee
Hebin Bai
Xinghua Xiao
Pingxuan Peng
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 Hebin Bai, Xinghua Xiao, Pingxuan Peng filed Critical Hebin Bai
Publication of WO2003003540A1 publication Critical patent/WO2003003540A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/02—Details
    • H02K21/04—Windings on magnets for additional excitation ; Windings and magnets for additional excitation
    • H02K21/042—Windings on magnets for additional excitation ; Windings and magnets for additional excitation with permanent magnets and field winding both rotating

Definitions

  • the invention relates to a permanent magnet generator, in particular to a permanent magnet generator with an electromagnetic excitation bridge. Background of the invention
  • the excitation field is generated by the permanent magnet in the rotor, because the field strength of the excitation field is a certain value. Therefore, the output voltage of a permanent magnet generator is not adjustable. When the number of motor poles is fixed and the number of revolutions is constant, the frequency of the output voltage cannot be changed, thereby limiting the application range of the generator.
  • the object of the present invention is to provide a permanent magnet generator that can regulate the output voltage.
  • the change of its excitation magnetic field is achieved by the magnetic bridge structure on the rotor and by controlling the direct current pulse current from the outside, thereby realizing the permanent magnet motor. Adjustment of output parameters.
  • a permanent magnet generator having an armature part including an armature winding and an excitation part including a permanent magnet, and is characterized by: a surface under each pole of the excited field part
  • An armature magnetic circuit part is provided with a magnetically permeable magnetic bridge along the circumferential direction of the motor, and the magnetic permeable magnetic bridge is used to connect the corresponding magnetic circuit part below the left and right adjacent poles;
  • the electromagnetic excitation coils of each pole are connected in series and / or in parallel with each other and are powered by the control power supply.
  • the permanent magnetic flux is: the whole part of the magnetic bridge, the generator does not output voltage, that is, the voltage is zero.
  • the electric excitation is strengthened, and the shunted permanent magnetic flux is gradually reduced, so that the generator voltage is gradually increased. Thereby, the pressure can be adjusted from scratch.
  • the control power is the excitation power, which is only a few percent of the generator, it is more economical and easy.
  • the electromagnetic excitation is variable amplitude direct current
  • the output voltage of the generator is an output voltage having the same frequency envelope as the amplitude frequency of the electromagnetic excitation. Therefore, the frequency of the variable frequency generator can be obtained by changing the frequency of the amplitude change.
  • the output power parameters (3 ⁇ 4 voltage, frequency, etc.) of the permanent magnet generator can be arbitrarily adjusted from zero.
  • FIG. 1 is a schematic partial sectional view of a permanent magnet generator of the present invention
  • FIG. 2 is a schematic diagram of a magnetic field adjustment principle of the permanent magnet generator of the present invention; wherein (a) is a situation when an air gap magnetic flux is minimum. (B) is the case when the air gap magnetic flux increases. Best practice
  • FIG. 1 shows a partial structural schematic diagram of an embodiment of the present invention.
  • the external part is a stator 1, including an armature part 11 and an armature winding 12 distributed in a slot thereof.
  • the internal part is an excitation part 2, including a pole shoe part 21. , An electromagnetic excitation bridge 22, a lower magnet 23, a permanent magnet 24, an electromagnetic excitation coil 25, and a non-magnetic skeleton 4.
  • the pole shoe portion 21 is a part of the rotor magnetic circuit facing the stator 1 with an air gap.
  • a plurality of pole shoe portions 21 are distributed on the circumference, and each pole shoe portion 21 constitutes a magnetic pole, and an exciting magnetic flux is emitted to the armature portion.
  • the pole shoe portion 21 extends toward the center to form a lower magnet 23, that is, the top of the lower magnet 23 is a pole portion 21.
  • Permanent magnets 24 are arranged on both sides of the lower part of the lower guide magnet in the center.
  • the magnetization is performed in the circumferential direction of the motor, and the opposite polarities of two adjacent permanent magnets 24 are the same; a magnetic bridge 22 is circumferentially arranged between the upper portions of the adjacent magnetic conductors, and the magnetic bridge is used to shunt the permanent magnetic flux.
  • An electromagnetic excitation coil 25 is provided around the magnetic bridge, and the adjacent coils 25 are connected such that the directions of the electromagnetic excitation magnetic fluxes generated in the magnetic bridges are opposite directions.
  • the coils 25 of each pole can be connected in series and / or in parallel, that is, each coil 25 can be connected in series with each other, or in parallel with each other, or a coil group formed by a plurality of series coils is connected in parallel with each other, and then connected to an external DC or transformer DC power supply.
  • the above-mentioned non-magnetic skeleton 4 is composed of a pole shoe portion 21, a magnetic bridge 22, and a lower guide magnet 23.
  • the non-magnetic skeleton 4 is mounted on the rotating shaft 5, and can be dragged and rotated by a prime mover, thereby inputting mechanical energy generator.
  • the magnetic flux generated by the permanent magnets is collected in the lower magnets 23 held by the adjacent two permanent magnets 24, and when the amplitude of the DC pulse power supplied to the electromagnetic excitation coil 25 is zero
  • This magnetic flux is basically completely distributed by the magnetic bridge 22 located on the upper part of the lower magnet 23, that is, the magnetic flux returns through the magnetic bridge 22 without passing through the air gap and the armature part.
  • the voltage at the armature winding end of the generator Is zero.
  • the voltage generated by the generator will be the alternating voltage amplitude of the basic frequency determined by the speed and the number of magnetic poles Modulated voltage wave modulated by f G frequency. In this way, a high-power variable-frequency voltage controlled by a low-power variable-frequency control voltage can be obtained by taking out this modulated voltage wave.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

La présente invention se rapporte à un générateur à aimants permanents possédant un pont électrique, dans lequel le flux de l'aimant permanent de chaque pôle est ramifié par le pont magnétique qui est formé entre deux pôles consécutifs. Une alimentation délivre de l'énergie à la bobine de champ qui est enroulée autour du pont magnétique. Lors du réglage du courant d'alimentation, l'intensité du champ et le flux magnétique de l'entrefer sont modifiés, ce qui entraîne une modification de la tension du générateur. Lors du réglage de la fréquence du courant d'excitation à excursion variable, la fréquence de l'enroulement du générateur est modifiée, ce qui entraîne une modification du facteur fréquence-tension. Cette invention présente l'avantage de permettre un réglage simple et pratique de la tension d'un générateur, une stabilisation de la tension et une variation économique de la fréquence.
PCT/CN2002/000456 2001-06-28 2002-06-28 Generateur a aimants permanents possedant un pont electrique WO2003003540A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN01229309.1 2001-06-28
CN01229309U CN2482761Y (zh) 2001-06-28 2001-06-28 带电励磁桥的永磁发电机

Publications (1)

Publication Number Publication Date
WO2003003540A1 true WO2003003540A1 (fr) 2003-01-09

Family

ID=4700096

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2002/000456 WO2003003540A1 (fr) 2001-06-28 2002-06-28 Generateur a aimants permanents possedant un pont electrique

Country Status (2)

Country Link
CN (1) CN2482761Y (fr)
WO (1) WO2003003540A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100872261B1 (ko) * 2004-04-28 2008-12-05 기와 가가쿠 고교 가부시키가이샤 색상 가변형 재귀성 반사시트
RU2637767C2 (ru) * 2016-03-16 2017-12-07 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Уфимский государственный авиационный технический университет" Способ стабилизации выходного напряжения магнитоэлектрического генератора

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109648144B (zh) * 2019-02-01 2020-06-30 杭州精锋园林工具有限公司 具有张紧装置的链锯及控制方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2185944Y (zh) * 1993-11-27 1994-12-21 沈海根 一种新型交流永磁同步发电机
JPH09201022A (ja) * 1996-01-23 1997-07-31 Brother Ind Ltd 可変リラクタンスモータ
JPH11285186A (ja) * 1998-03-27 1999-10-15 Fujitsu General Ltd 永久磁石電動機
JP2000350393A (ja) * 1999-03-29 2000-12-15 Shin Etsu Chem Co Ltd 永久磁石モータ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2185944Y (zh) * 1993-11-27 1994-12-21 沈海根 一种新型交流永磁同步发电机
JPH09201022A (ja) * 1996-01-23 1997-07-31 Brother Ind Ltd 可変リラクタンスモータ
JPH11285186A (ja) * 1998-03-27 1999-10-15 Fujitsu General Ltd 永久磁石電動機
JP2000350393A (ja) * 1999-03-29 2000-12-15 Shin Etsu Chem Co Ltd 永久磁石モータ

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100872261B1 (ko) * 2004-04-28 2008-12-05 기와 가가쿠 고교 가부시키가이샤 색상 가변형 재귀성 반사시트
RU2637767C2 (ru) * 2016-03-16 2017-12-07 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Уфимский государственный авиационный технический университет" Способ стабилизации выходного напряжения магнитоэлектрического генератора

Also Published As

Publication number Publication date
CN2482761Y (zh) 2002-03-20

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