WO2009089662A1 - Générateur à coïncidence de fréquence adaptative - Google Patents

Générateur à coïncidence de fréquence adaptative Download PDF

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Publication number
WO2009089662A1
WO2009089662A1 PCT/CN2008/000273 CN2008000273W WO2009089662A1 WO 2009089662 A1 WO2009089662 A1 WO 2009089662A1 CN 2008000273 W CN2008000273 W CN 2008000273W WO 2009089662 A1 WO2009089662 A1 WO 2009089662A1
Authority
WO
WIPO (PCT)
Prior art keywords
generator
fixedly mounted
main shaft
excitation
rotor
Prior art date
Application number
PCT/CN2008/000273
Other languages
English (en)
Chinese (zh)
Inventor
Guangshun Wang
Original Assignee
Guangshun Wang
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 Guangshun Wang filed Critical Guangshun Wang
Publication of WO2009089662A1 publication Critical patent/WO2009089662A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K19/00—Synchronous motors or generators
    • H02K19/16—Synchronous generators
    • H02K19/26—Synchronous generators characterised by the arrangement of exciting windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K19/00—Synchronous motors or generators
    • H02K19/16—Synchronous generators
    • H02K19/36—Structural association of synchronous generators with auxiliary electric devices influencing the characteristic of the generator or controlling the generator, e.g. with impedances or switches
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K19/00—Synchronous motors or generators
    • H02K19/16—Synchronous generators
    • H02K19/36—Structural association of synchronous generators with auxiliary electric devices influencing the characteristic of the generator or controlling the generator, e.g. with impedances or switches
    • H02K19/365—Structural association of synchronous generators with auxiliary electric devices influencing the characteristic of the generator or controlling the generator, e.g. with impedances or switches with a voltage regulator

Definitions

  • the present invention relates to a generator, and more particularly to an adaptive co-frequency generator suitable for use in a low speed multi-pole, unstable power speed generator. Background technique
  • the object of the present invention is to provide an adaptive co-frequency generator which has a simple structure, low rotation speed, can be directly connected to the grid and does not need to rectify an inverter device, and the output voltage frequency is always in the range of the allowable range of the power speed regardless of the spindle speed. It remains consistent with the grid frequency and does not require additional auxiliary frequency modulation.
  • the adaptive co-frequency generator of the present invention comprises a main shaft, a generator rotor fixedly mounted on the main shaft, and a generator stator disposed around the generator rotor, the generator stator is mounted on the main shaft through a bearing, and the generator stator Fixedly mounted on the base, the utility model is characterized in that: the generator rotor comprises a claw plate, a iron core and a rotor coil, and the iron core is fixedly mounted between the two claw plates which are oppositely disposed, and the claw plate is fixed through the central mounting hole thereof Mounted on the main shaft, a plurality of iron cores are distributed around the main shaft, and the rotor core is wound on the iron core; the generator stator is in the shape of a barrel, and the ends of the barrel wall are fixedly connected to the end cover, and the center of the end cover is inserted through the bearing Mounted on the main shaft, the stator coil is fixedly mounted on the inner side of the barrel wall, and the iron core of the stator coil is magnetically matched with
  • the winding is fixedly mounted on the inner wall of the cylindrical armature bracket, the armature bracket is fixedly mounted on the main shaft, and the field winding of the excitation generator is fixedly mounted on the shaft
  • the sleeve is sleeved on the main shaft through the bearing; the sleeve is also fixedly mounted with a brush;
  • the synchronous motor comprises a motor stator and a motor rotor, the motor stator is fixedly connected with the generator stator, and the inner stator is fixedly mounted with the motor stator coil.
  • the rotor of the motor is a permanent magnet rotor fixedly mounted on the sleeve; the excitation winding of the excitation generator is connected to the excitation power source through a brush, the armature winding is connected to the rotor coil through a wire; and the stator coil is connected to the output voltage terminal.
  • the claw plate has a disk shape, and a plurality of toothed claw poles are evenly distributed along the circumference of the edge portion, and the claw pole is disposed parallel to the axis of the main shaft and perpendicular to the claw plate.
  • the excitation winding of the excitation generator is wound around the excitation core, and the excitation core is fixedly mounted between the two excitation claw plates, the excitation claw plate is disc-shaped, and the edge portion thereof is uniformly distributed with a plurality of tooth-like excitations along the circumference.
  • the claw pole, the exciting claw pole is disposed parallel to the axis of the main shaft and perpendicular to the exciting claw plate; the center of the exciting claw plate is provided with a mounting hole, and the plurality of exciting windings are evenly distributed around the mounting hole around the mounting hole, and are installed
  • a mounting sleeve is fixedly mounted in the hole, and the mounting sleeve is fixedly mounted on the sleeve.
  • a connecting sleeve is fixedly mounted on the main shaft by a flat key, and the two claw plates are fixedly mounted at both ends of the connecting sleeve.
  • the present invention has the following advantages -
  • Each rotating component is directly mounted on the same main shaft.
  • the concentricity is high and the air gap is small, which reduces the production cost and improves the stability of the generator.
  • Figure 1 is a schematic structural view of an embodiment of the present invention
  • Figure 2 is a cross-sectional view taken along line A-A of Figure 1;
  • Figure 3 is an enlarged schematic view of the excitation generator and the synchronous motor portion
  • Figure 4 is a cross-sectional view taken along line B-B of Figure 3;
  • Fig. 5 is a schematic exploded view of the claw plate. detailed description
  • the adaptive co-frequency generator of the present invention comprises a main shaft 1, a generator rotor fixedly mounted on the main shaft 1, and a generator stator 3 disposed around the generator rotor, and a generator stator.
  • 3 is mounted on the main shaft 1 through a bearing, and the generator stator 3 is fixedly mounted on the base 11.
  • the generator rotor includes a claw plate 2, a core 51, and a rotor coil 5.
  • the claw plate 2 is disc-shaped and made of a material having good magnetic permeability. The edge portion thereof uniformly distributes a plurality of tooth-shaped claw poles 21 along the circumference.
  • the claw pole 21 has a trapezoidal shape, and the claw pole 21 is disposed to be a main shaft.
  • the axis of 1 is parallel and perpendicular to the claw plate 2.
  • the two claw plates 2 are arranged in parallel in a staggered arrangement of the claw poles 21.
  • the iron core 51 is fixedly mounted between the oppositely disposed two claw plates 2, and the claw plates 2 are fixedly mounted on the main shaft 1 through the center mounting holes thereof.
  • a connecting sleeve is fixedly mounted on the main shaft 1 by a flat key.
  • the two claw plates 2 are fixedly mounted at both ends of the connecting sleeve 6, respectively.
  • the connecting sleeve 6 should be made of a non-magnetic material.
  • the connecting sleeve 6 and the claw should be A spacer made of a non-magnetic material is disposed between the plates 2. This ensures that the two poles of the magnetic field generated by the rotor coil 5 are distributed on the two claw plates 2, respectively, without being short-circuited by the connecting sleeve 6.
  • a plurality of cores 51 are evenly distributed around the main shaft 1 around the mounting holes on the claw plates 2, and the rotor core 5 is wound around the iron core 51.
  • the number of the iron core 51 and the rotor coil 5 may be set as needed, and may be two or three, four or more;
  • the generator stator 3 has a cylindrical shape, and both ends of the barrel wall are fixedly coupled to the end cover 31, and the center of the end cover 31 is inserted into the main shaft 1 through a bearing, so that the main shaft 1 can be rotated in the end cover 31.
  • the stator coil 7 is fixedly mounted on the inner side of the barrel wall.
  • the number of pole pairs of the stator coil 7 should be the same as the number of the claw poles 21.
  • the iron core of the stator coil 7 is magnetically fitted to the core of the rotor coil 5.
  • the generator rotors located inside the generator stator 3 may be a group, or may be two groups, three groups, or four groups as shown in Fig. 1.
  • the structure of multiple sets of generator stators can improve the capacity of the generator and facilitate the rapid production of the mold, thereby reducing the difficulty of production and manufacturing and reducing the production cost.
  • the series connection method can greatly reduce the harmonic components of the output voltage.
  • an AC excitation generator and a three-phase synchronous motor are further mounted on the main shaft 1.
  • the armature winding 91 of the excitation generator is fixedly mounted on the inner wall of the cylindrical armature bracket 92.
  • the pivot bracket 92 is fixedly mounted on the main shaft 1, and the field winding 93 of the field generator is fixedly mounted on the sleeve 94, and the sleeve 94 is fitted on the main shaft 1 through a bearing.
  • Excitation winding structure of excitation generator and junction of generator rotor Similarly, the structure of the core and the coil is sandwiched by the claw plates which are oppositely arranged.
  • the field winding 93 of the field generator is wound around the field core 98, and the field core 98 is fixedly mounted between the two excitation claw plates 99.
  • the field claw plate 99 is disk-shaped, and the edge portion thereof is along the edge.
  • a plurality of toothed excitation claw poles 96 are evenly distributed around the circumference, and the excitation claw poles 96 have a trapezoidal shape.
  • the number of the exciting claw poles 96 here should be the same as the number of poles of the armature winding 91.
  • the exciting claw pole 96 is disposed parallel to the axis of the main shaft 1 and perpendicular to the exciting claw plate 99; as shown in FIG.
  • a mounting hole is provided in the center of the exciting claw plate 99, and the plurality of exciting windings 93 are centered on the mounting hole Evenly distributed around the mounting hole, a mounting sleeve 97 is fixedly mounted in the mounting hole, and the mounting sleeve 97 is fixedly mounted on the sleeve 94.
  • the mounting sleeve 97 should be made of a non-magnetic material, or at least a non-magnetic spacer between the mounting sleeve 97 and the excitation claw plate 99, thereby avoiding a magnetic short between the two excitation claw plates 99.
  • a motor rotor 82 on which a brush 95 and a synchronous motor are mounted is also fixed to the sleeve 94.
  • the synchronous motor includes a motor stator 81 and a motor rotor 82.
  • the motor stator 81 is fixedly coupled to the generator stator 3, and the mechanism is more stable. A portion connected to the main shaft 1 at one end of the motor stator 81 is also connected by a bearing.
  • the motor stator coil 83 is fixedly mounted on the inner wall of the motor stator 81.
  • the motor rotor 82 is a permanent magnet rotor fixedly mounted on the sleeve 94.
  • the field winding 93 of the field generator is connected to the excitation power source via the brush 95, and the armature winding 91 is passed. The wire is connected to the rotor coil 5; the stator coil 7 is connected to the output voltage terminal.
  • the main shaft 1 is designed to have a thick end and a thin end, and a step surface is provided on the main shaft 1 between the generator rotor and the exciter generator. A hole is drilled into the step surface, and the hole passes from the side of the field generator to the side of the rotor coil 5.
  • the joint of the field winding 93 can easily pass through the hole in the stepped surface into one side of the rotor coil 5 to be connected to the rotor coil 5. Since the rotor coil 5 is coaxially connected to the field winding 93 during operation, it is relatively stationary, and there is no relative motion between the two. This connection does not prevent normal work.
  • the main shaft 1 drives the generator rotor, the armature bracket 92, and the armature winding 91 fixedly coupled thereto to rotate at a certain rotational speed, that is, the generator rotor and the armature bracket 92 of the field generator and the armature winding 91.
  • the rotational speeds are the same, and the generator stator 3 and the motor stator 81 and the main shaft 1 are fixed by the bearing connection and fixed to the base.
  • the motor rotor 82 drives the excitation claw plate 99 to rotate by the sleeve 94.
  • the exciting power source supplies a field current to the field winding 93 of the field generator via the brush 95, and a magnetic field is generated on the field claw plate 99.
  • the magnetic field is synchronously rotated by the number of revolutions N by the motor rotor 82.
  • the armature winding 91 of the field generator is lower than the excitation claw plate under the driving of the main shaft 1.
  • the speed of 99 is rotated, and the rotation speed of the spindle 1 is Nl.
  • the magnetic field generated by the armature winding 91 of the field generator and the exciting claw plate 99 is relatively moved, and the difference speed is N-N1.
  • the alternating magnetic field is rotated by the spindle 1 by the rotation speed N1, and an electromotive force of frequency F2 is generated on the stator coil ⁇ of the generator, F2HF1+P2*Nl/60, where P2 is the pole pair number of the generator.
  • the grid frequency that is, the power frequency of the synchronous motor is F
  • the adaptive co-frequency generator can also realize the adjustment of the output voltage.
  • the excitation current of the excitation generator increases accordingly, and the excitation electromotive force also increases, and is applied to the excitation.
  • the exciting current on the winding 93 also increases, at which time the output electromotive force generated on the armature winding 91 also rises, and the exciting current in the generator rotor coil 5 also increases, and the electromotive force generated on the stator coil 7 It then rises.
  • the output electromotive force also decreases.
  • the generator can easily adjust the output voltage to adjust the amount of reactive power delivered by the generator to the grid.
  • a claw-pole generator rotor is used, but the practical application is not limited to this form, and can also be applied to other generators having a rotor type such as a salient-pole generator.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Synchronous Machinery (AREA)

Abstract

Générateur à coïncidence de fréquence adaptative comprenant un arbre principal (1), un rotor fixé à l'arbre principal (1) et un stator (3) autour du rotor. Le stator (3) est monté sur l'arbre principal (1) au moyen d'un palier d'arbre. Un espace magnétique est créé entre un noyau de fer du stator (3) et un noyau de fer (51) du rotor. Un générateur d'excitation et un moteur synchrone à aimants permanents sont montés sur l'arbre principal (1). Le moteur synchrone à aimants permanents est fixé à un manchon (94). Un enroulement d'excitation (93) du générateur d'excitation est connecté à une source d'alimentation d'excitation au moyen d'un balai électrique (95), et un enroulement d'induit (91) du générateur d'excitation est connecté à un enroulement de rotor (5) du générateur à coïncidence de fréquence adaptative au moyen de fils conducteurs. Un enroulement de stator (7) du générateur à coïncidence de fréquence adaptative est connecté à des bornes de tension de sortie.
PCT/CN2008/000273 2008-01-14 2008-02-02 Générateur à coïncidence de fréquence adaptative WO2009089662A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200810013638.3 2008-01-14
CNA2008100136383A CN101488693A (zh) 2008-01-14 2008-01-14 自适应同频发电机

Publications (1)

Publication Number Publication Date
WO2009089662A1 true WO2009089662A1 (fr) 2009-07-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2008/000273 WO2009089662A1 (fr) 2008-01-14 2008-02-02 Générateur à coïncidence de fréquence adaptative

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CN (1) CN101488693A (fr)
WO (1) WO2009089662A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102437699B (zh) * 2011-10-31 2013-06-12 王光顺 直接并网变速恒频发电机
CN111446796A (zh) * 2020-03-09 2020-07-24 武汉钢铁有限公司 一种同步电机用三相绕组交流励磁机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1087454A (zh) * 1992-11-25 1994-06-01 王秉善 恒频式船用轴带发电机组
CN2272163Y (zh) * 1996-08-05 1998-01-07 吴文达 并联式超大功率中频交流弧焊发电机
US7208854B1 (en) * 2006-03-09 2007-04-24 Hamilton Sundstrand Corporation Rotor cooling system for synchronous machines with conductive sleeve
CN100341232C (zh) * 2003-08-29 2007-10-03 泰豪科技股份有限公司 多机一体式无刷电动变频机组

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1087454A (zh) * 1992-11-25 1994-06-01 王秉善 恒频式船用轴带发电机组
CN2272163Y (zh) * 1996-08-05 1998-01-07 吴文达 并联式超大功率中频交流弧焊发电机
CN100341232C (zh) * 2003-08-29 2007-10-03 泰豪科技股份有限公司 多机一体式无刷电动变频机组
US7208854B1 (en) * 2006-03-09 2007-04-24 Hamilton Sundstrand Corporation Rotor cooling system for synchronous machines with conductive sleeve

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