WO2009006778A1 - Système de refroidissement pour générateur à aimants permanents - Google Patents

Système de refroidissement pour générateur à aimants permanents Download PDF

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Publication number
WO2009006778A1
WO2009006778A1 PCT/CN2008/000769 CN2008000769W WO2009006778A1 WO 2009006778 A1 WO2009006778 A1 WO 2009006778A1 CN 2008000769 W CN2008000769 W CN 2008000769W WO 2009006778 A1 WO2009006778 A1 WO 2009006778A1
Authority
WO
WIPO (PCT)
Prior art keywords
permanent magnet
magnet generator
rotor
engine
flywheel housing
Prior art date
Application number
PCT/CN2008/000769
Other languages
English (en)
Chinese (zh)
Inventor
Henglin Xiao
Original Assignee
Wuxi Kipor Power Co., 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 Wuxi Kipor Power Co., Ltd filed Critical Wuxi Kipor Power Co., Ltd
Publication of WO2009006778A1 publication Critical patent/WO2009006778A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
    • F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1807—Rotary generators
    • H02K7/1815—Rotary generators structurally associated with reciprocating piston engines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
    • F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
    • F02B63/042—Rotating electric generators

Definitions

  • the present invention relates to a cooling system for a permanent magnet generator, and more particularly to a cooling system for a high power permanent magnet generator.
  • the temperature inside the body is relatively high, especially the high-power diesel digital generator set, which is configured as a permanent magnet generator. Due to the miniaturization of the shape, there is generally no cooling fan, but the generator is cooled by the free flow of air in the chassis. The generator set of this structure cannot be continuously operated for a long time. Since there is no direct cooling of the generator, the heat generated by the stator coils cannot be quickly discharged, so that the temperature rise of the rotor with the permanent magnets rises rapidly. For permanent magnet generators, temperature is a direct factor in determining the performance of a permanent magnet. Therefore, in order to make the permanent magnets have stable performance and reduce irreversible changes during application, temperature control is a problem to be solved.
  • sintered NdFeB has a large magnetic energy product and intrinsic coercive force, it is widely used in high-power permanent magnet generators, but sintered NdFeB
  • the residual magnetic induction temperature coefficient of the magnet for -0. 08% / V ⁇ - 0. 13% / °C
  • the internal coercivity temperature coefficient for -0.5% / ⁇ - 0. 65% / V
  • the temperature stability is relatively poor, and the stable working temperature of sintered NdFeB is generally around 140 °C.
  • the permanent magnet in the motor is prone to thermal demagnetization, and a large part of this demagnetization is irreversible, which results in a power drop and performance degradation of the common permanent magnet motor;
  • the temperature of the stator coil is too high, which causes the insulation to deteriorate seriously, which greatly reduces the service life of the motor. Due to these two factors, the overall performance of the entire unit is affected.
  • the object of the present invention is to overcome the above-mentioned deficiencies, thereby providing a cooling system for a permanent magnet generator, which can greatly improve the cooling of the stator coil and the permanent magnet rotor of the permanent magnet generator without increasing the overall structural size of the unit.
  • the efficiency ensures the reliability of the permanent working of the permanent magnet generator and prolongs the service life of the permanent magnet generator.
  • the invention mainly consists of an engine, an engine flywheel shell and a permanent magnet generator, and the permanent magnet generator is fixed.
  • the sub-machine is mounted on the engine flywheel housing, and the permanent magnet generator rotor is mounted on the engine crankshaft, characterized in that one end of the permanent magnet generator rotor mounting vane is connected to the engine crankshaft, and the vane connected to the permanent magnet generator rotor is disposed at Between the engine flywheel housing and the permanent magnet generator.
  • the engine flywheel housing has two or more exhaust holes on the outer circular surface.
  • the engine flywheel housing and the groove provided on the outer diameter of the permanent magnet generator stator form at least two exhaust holes along the circumferential direction of the outer diameter of the stator.
  • the permanent magnet generator rotor is provided with at least two air inlet holes along the axial direction of the rotor.
  • the invention mainly utilizes the idle space between the permanent magnet generator and the flywheel housing, and the vane mounted on the rotor of the permanent magnet generator is disposed therein, and the cold air is sucked from the vent hole of the rotor, and is driven by the rotation of the rotor.
  • the blades rotate, generating cooling air to force the rotor and stator of the permanent magnet generator to cool, maintaining a smooth air flow, reducing the heat transfer of the stator to the permanent magnets on the rotor, and having a good air-cooling effect;
  • the cooling wind generated by the blade also takes away part of the heat transmitted from the engine to the flywheel housing, reducing the heat conduction of the flywheel housing to the generator.
  • the stator coil and permanent magnet of the permanent magnet generator can be greatly improved.
  • the cooling efficiency of the rotor ensures the reliability of the permanent operation of the permanent magnet generator and extends the service life of the permanent magnet generator.
  • Figure 1 is a schematic axial sectional view of a permanent magnet generator cooling system of the present invention.
  • FIG. 2 is an axial schematic view of a permanent magnet generator cooling system of the present invention.
  • FIG 3 is a longitudinal schematic view of a permanent magnet generator cooling system of the present invention.
  • the invention mainly comprises an engine 1, an engine flywheel housing 2, an engine crankshaft 3, a fan blade 4, a permanent magnet generator rotor 5, a permanent magnet generator stator 6, an air inlet hole 7, an exhaust hole 8, an exhaust hole 9, and a stator.
  • the coil 10, the permanent magnet generator 11, and the like are composed.
  • the invention mainly consists of an engine 1, an engine flywheel housing 2 and a permanent magnet generator 11, and a permanent magnet generator stator 6 is mounted on the engine flywheel housing 2, and a gap is left between the engine flywheel housing 2 and the permanent magnet generator stator 6. At least two or more exhaust holes 8 are provided on the outer diameter of the engine flywheel housing 2.
  • the engine flywheel housing 2 and the recess provided on the outer diameter of the permanent magnet generator stator 6 form at least two exhaust holes 9 in the circumferential direction of the outer diameter of the stator.
  • the stator coil 10 is disposed on the permanent magnet generator stator 6.
  • the permanent magnet generator rotor 5 is mounted on the output end of the engine crankshaft 3, and the permanent magnet generator rotor 5 is provided to There are two less air inlet holes 7 in the axial direction of the rotor.
  • One end of the permanent magnet generator rotor 5 on which the vane 4 is mounted is connected to the engine crankshaft 3.
  • a vane 4 connected to the permanent magnet generator rotor 5 is disposed between the engine flywheel housing 2 and the permanent magnet generator 11.
  • a cavity is formed between the permanent magnet generator rotor 5 and the engine flywheel housing 2.
  • the heat dissipation in the cavity is facilitated, and the exhaust hole on the radially outer surface of the engine flywheel housing and the ventilation hole of the generator rotor form a Cool the air duct.
  • the engine and permanent magnet generator stator 6 inside the body are two main heat-generating components. During operation, they generate a large amount of heat. If they cannot be effectively cooled, they will inevitably affect permanent magnet power generation.
  • the engine flywheel housing 2 and the permanent magnet generator stator 6 are cooled by air cooling, and a smooth cooling air passage is formed inside the body.
  • part of the heat of the engine is transmitted to the engine flywheel housing, and then transmitted to the generator through the engine flywheel housing.
  • the cooling air generated by the rotation of the cooling fan disposed between the engine flywheel housing and the generator has a cooling effect on the engine flywheel housing. It takes away some of the heat from the engine flywheel housing and reduces the heat transfer from the engine flywheel housing to the generator.
  • the permanent magnet generator rotor 5 is driven by the rotation of the engine crankshaft 3, so that wind pressure is formed in the cavity between the permanent magnet generator rotor 5 and the engine flywheel housing 2 due to the rotation of the wind vane 4 on the permanent magnet generator rotor 5.
  • the cold air enters the low pressure zone in the cavity through the air inlet hole 7 in the permanent magnet generator rotor 5, and a high pressure zone is formed on the radial periphery of the blade 4 by the rotation of the blade 4, forcing air from the engine flywheel casing 2
  • the air vent 8 and the ventilation gap between the permanent magnet generator stator 6 and the engine flywheel housing 2 are excluded outward, taking away the heat generated by the engine to the engine flywheel housing 2 and the permanent magnet generator stator 6 to achieve a cooling effect.
  • the cooling wind generated by the blade 4 also takes away a part of the heat that the engine 1 transmits to the engine flywheel housing 2, reduces the heat conduction of the engine flywheel housing 2 to the generator, and limits the temperature rise of the permanent magnet generator rotor 5, thereby ensuring the temperature. Long-term reliable operation of the generator.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

L'invention concerne un système de refroidissement pour générateur à aimants permanents, comprenant un moteur (1), un carter de volant moteur (2) et un générateur à aimants permanents (11). Un stator (6) du générateur à aimants permanents est monté sur le carter de volant moteur (2), et un rotor (5) du générateur à aimants permanents est monté sur un vilebrequin (3) du moteur. Une extrémité du rotor (5) du générateur à aimants permanents portant une pale (4) est raccordée au vilebrequin (3) du moteur, et la pale (4) raccordée au rotor (5) du générateur à aimants permanents est disposée entre le carter du volant moteur (2) et le générateur à aimants permanents (11).
PCT/CN2008/000769 2007-07-11 2008-04-15 Système de refroidissement pour générateur à aimants permanents WO2009006778A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200710023783.5 2007-07-11
CNA2007100237835A CN101127469A (zh) 2007-07-11 2007-07-11 一种永磁发电机的冷却***

Publications (1)

Publication Number Publication Date
WO2009006778A1 true WO2009006778A1 (fr) 2009-01-15

Family

ID=39095428

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2008/000769 WO2009006778A1 (fr) 2007-07-11 2008-04-15 Système de refroidissement pour générateur à aimants permanents

Country Status (2)

Country Link
CN (1) CN101127469A (fr)
WO (1) WO2009006778A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI422125B (zh) * 2009-11-30 2014-01-01 Kwang Yang Motor Co The cooling structure of the alternator flywheel
CN111181275A (zh) * 2020-01-13 2020-05-19 南通智鼎电子科技有限公司 一种发动机飞轮内嵌式外转子多极永磁发电机

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101127469A (zh) * 2007-07-11 2008-02-20 无锡开普动力有限公司 一种永磁发电机的冷却***
WO2009121226A1 (fr) * 2008-04-03 2009-10-08 Tian Yu Moteur à courant continu sans balai et son radiateur
CN102684384A (zh) * 2011-03-10 2012-09-19 湖南华强电气有限公司 一种汽车空调用电动压缩机的发电机
CN103023184A (zh) * 2011-09-20 2013-04-03 德昌电机(深圳)有限公司 高速气流产生装置及其无刷电机
CN109921563A (zh) * 2019-04-22 2019-06-21 弘允新能源（上海）有限公司 一种飞轮紧耦合式发电机
CN110460193A (zh) * 2019-08-09 2019-11-15 泰安阳光动力电机有限公司 一种发电机与油机一体式机组
CN115387902B (zh) * 2021-10-15 2024-01-02 常州市沃拓机电有限公司 一种柴油发电机

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2349376Y (zh) * 1998-04-28 1999-11-17 王吉安 带有风叶的飞轮发电机转子
JPH11341742A (ja) * 1998-05-26 1999-12-10 Yanmar Diesel Engine Co Ltd フライホイール型発電機の冷却構造
JP2001112225A (ja) * 1999-10-06 2001-04-20 Denso Corp 磁石発電機
EP1146211A2 (fr) * 2000-04-14 2001-10-17 Fuji Jukogyo Kabushiki Kaisha Moteur générateur
JP2001295659A (ja) * 2000-04-14 2001-10-26 Fuji Heavy Ind Ltd エンジン発電機
CN101127469A (zh) * 2007-07-11 2008-02-20 无锡开普动力有限公司 一种永磁发电机的冷却***
CN201063498Y (zh) * 2007-07-11 2008-05-21 无锡开普动力有限公司 一种永磁发电机的冷却***

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2349376Y (zh) * 1998-04-28 1999-11-17 王吉安 带有风叶的飞轮发电机转子
JPH11341742A (ja) * 1998-05-26 1999-12-10 Yanmar Diesel Engine Co Ltd フライホイール型発電機の冷却構造
JP2001112225A (ja) * 1999-10-06 2001-04-20 Denso Corp 磁石発電機
EP1146211A2 (fr) * 2000-04-14 2001-10-17 Fuji Jukogyo Kabushiki Kaisha Moteur générateur
JP2001295659A (ja) * 2000-04-14 2001-10-26 Fuji Heavy Ind Ltd エンジン発電機
CN101127469A (zh) * 2007-07-11 2008-02-20 无锡开普动力有限公司 一种永磁发电机的冷却***
CN201063498Y (zh) * 2007-07-11 2008-05-21 无锡开普动力有限公司 一种永磁发电机的冷却***

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI422125B (zh) * 2009-11-30 2014-01-01 Kwang Yang Motor Co The cooling structure of the alternator flywheel
CN111181275A (zh) * 2020-01-13 2020-05-19 南通智鼎电子科技有限公司 一种发动机飞轮内嵌式外转子多极永磁发电机

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