CN102158045A - Speed change method of gear box and electromagnetic gear box - Google Patents

Speed change method of gear box and electromagnetic gear box Download PDF

Info

Publication number
CN102158045A
CN102158045A CN201110069248XA CN201110069248A CN102158045A CN 102158045 A CN102158045 A CN 102158045A CN 201110069248X A CN201110069248X A CN 201110069248XA CN 201110069248 A CN201110069248 A CN 201110069248A CN 102158045 A CN102158045 A CN 102158045A
Authority
CN
China
Prior art keywords
rotor
stator
gear box
links
magnetic pole
Prior art date
Application number
CN201110069248XA
Other languages
Chinese (zh)
Inventor
刘卫
Original Assignee
国电联合动力技术有限公司
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 国电联合动力技术有限公司 filed Critical 国电联合动力技术有限公司
Priority to CN201110069248XA priority Critical patent/CN102158045A/en
Publication of CN102158045A publication Critical patent/CN102158045A/en

Links

Abstract

The invention relates to a speed change method of a gear box, comprising a first rotor connected to an input shaft, a second rotor connected to an output shaft and a stator equipped with a stator winding, wherein speed is changed by matching permanent magnets having different magnetic pole pairs on the first rotor and the second rotor with the stator winding. The invention further relates to an electromagnetic gear box, comprising a shell, a stator and a rotor, wherein the stator is fixedly arranged on the shell; a stator winding is wound on the stator; the rotor is composed of a first rotor connected to an input shaft and a second rotor connected to an output shaft; the input shaft is connected to a wind driven generator; and the first rotor and the second rotor are respectively equipped with a permanent magnet with different magnetic pole pairs. The speed change method of a gear box and the electromagnetic gear box provided by the invention have the advantages that the weight of the device is light, the working efficiency is high, the loss is small, the service life is long, and the method and the box are suitable for popularization and application.

Description

A kind of method for changing speed of gear box and electromagnetic gear case
Technical field
The present invention relates to a kind of method for changing speed of gear box, and the electromagnetic gear case of making according to this method for changing speed.
Background technology
The application of gear box in motor is very extensive, just often uses in the middle of wind turbine generator, and is an important mechanical part, and its main function is that the transmission of power that wind wheel is produced under the wind-force effect is given generator and made it obtain corresponding rotating speeds.Usually the rotating speed of wind wheel is very low, does not far reach the desired rotating speed of generator for electricity generation, must be used for by the speedup of gear box gear pair realizing, so also gear box is referred to as gearbox.
What present most wind turbine generator adopted all is mechanical gearbox.And wind turbine generator was generally 20 years useful life, and its territorial environment of living in is abominable, and the gear box that is used at present is because often spin friction, the time regular meeting leakage of oil or other mechanical breakdowns take place, be difficult to reach the life-span in 20 years.Often need repairing or change gear box, yet the gear box of wind turbine generator all is installed in the high-altitude, maintenance and change the operation comparison difficulty of getting up.Because the repair and replacement of gear box cause several days time of whole wind group of motors shut-down operation, cause the unnecessary wasting of resources through regular meeting.
The CN101218733 patent discloses a kind of infinite variable speed electrical gearbox that has, and it comprises the power shaft that is connected with the control device of internal combustion engine, and power shaft is connected with output shaft by power transmission device.Wherein power transmission device comprises the magnet that is connected with power shaft, and magnet induced electricity power enters the coil that is connected with output shaft, utilizes the switching device that is connected with coil to produce the magnetic field that makes the output shaft rotation.It is that rotor is constituted rotatable output shaft, and stator is constituted rotatable power shaft, and the variation of the power output by the internal combustion engine that links to each other with stator realizes the infinitely variable speeds of gear box.For the application of electromagnetic gear case provides a kind of thinking, but its rotational stator needs link to each other with internal combustion engine, can't be applicable to wind turbine generator.
Summary of the invention
The electromagnetic gear case that the purpose of this invention is to provide that a kind of wear rate is low, the life-span is long, is used for wind turbine generator.
Another object of the present invention provides the method for changing speed of a kind of wind turbine generator with gear box.
For reaching above-mentioned purpose, the present invention has adopted following technical scheme:
A kind of method for changing speed of gear box, wherein, gear box mainly is made up of the first rotor that links to each other with power shaft, second rotor that links to each other with output shaft and the stator that is provided with stator winding, and the permanent magnet by the different magnetic poles logarithm that is provided with on the first rotor and second rotor cooperates the stator winding on the stator to realize the speed change of gear box.
The method for changing speed of described gear box, wherein, the first rotor rotates with n1 under the drive of wind turbine generator, and the stator winding on the stator excites the generation exciting current through the first rotor, drives second rotor and rotates with n2.
The method for changing speed of described gear box, wherein, the speed increasing ratio K=n2/n1=P1/P2 of described gear box, wherein, P1 is the magnetic pole logarithm of the first rotor, P2 is the magnetic pole logarithm of second rotor.
The invention also discloses a kind of electromagnetic gear case of making according to said gear case method for changing speed, comprise shell, stator and rotor, wherein, stator is fixedly mounted on the shell, twines stator winding on the stator; Rotor is made up of with second rotor that links to each other with output shaft the first rotor that links to each other with power shaft, and power shaft links to each other with wind turbine generator, is separately installed with the different permanent magnet of magnetic pole logarithm on the first rotor and second rotor.
Described electromagnetic gear case, wherein, the permanent magnet of installing on the described the first rotor rotates under the wind turbine generator that links to each other with power shaft drives, and excites described stator to produce exciting current; Electric current in described second rotor induction stator rotates with drive output shaft under the permanent magnet of second rotor cooperates at stator winding.
Described electromagnetic gear case, wherein, described stator is the class T-shape, and the first rotor and second rotor are respectively in the both sides of stator.
Described electromagnetic gear case, wherein, described stator is class " Ω " type or class " U " type, and the first rotor and second rotor are respectively in the interior outside of stator.
Described electromagnetic gear case, wherein, the speed increasing ratio of gear box equals the ratio between the permanent magnetism magnetic pole logarithm of the permanent magnetism magnetic pole logarithm of the first rotor and second rotor.
Principle of the present invention is that the principle of magneto alternator and permanent magnet synchronous motor is combined, for ease of explanation, can be with the gear box separated into two parts, a part is a power generation part, a part is electronic part, stator winding of power generation part and electronic partial common, promptly the stator winding electric current of power generation part can directly be passed in the stator winding of electronic part.Therefore the first rotor when power generation part rotates with n1, and the stator winding of power generation part produces exciting current, mean that also this electric current has also flow in the stator of electronic part simultaneously, thereby second rotor that drives electronic part rotates with n2.
Rotating speed=60* frequency/magnetic pole logarithm according to synchronous machine.If the rotating speed of power generation part the first rotor is n1, permanent magnetism magnetic pole logarithm is that P1, power frequency are f1; Electronic part rotating speed is that n2, permanent magnetism magnetic pole logarithm are that P2, power frequency are f2.Because power generation part directly is connected with electronic part, not through over commutation, so f1=f2, again because of n1=60f1/P1, n2=60f2/P2, thus n1*P1=n2*P2, so P1/P2=n2/n1=K.K is the speed increasing ratio of electromagnetic gear case.
Electromagnetic gear case of the present invention, the permanent magnet that adopts the different magnetic poles logarithm and stator winding cooperate mechanical driving devices such as the speed change that realizes gear box, single unit system gearless, the basic nothing oil of realizing is operated, and equipment failure rate is low, and it is little to wear and tear, energy consumption is low, and is in light weight, high efficiency, life-span is long, the basic realization and the same life-span of wind-powered electricity generation unit need not to repair or change gear box midway, saved manpower and materials, avoided the wasting of resources, be fit to very much apply.
Description of drawings
Fig. 1 is the sectional structure schematic diagram of a kind of form of electromagnetic gear case of the present invention;
Fig. 2 is the sectional structure schematic diagram of the another kind of form of electromagnetic gear case of the present invention.
Embodiment
Below in conjunction with drawings and Examples the present invention is further detailed.
Embodiment 1:
A kind of electromagnetic gear case comprises shell 1, stator and rotor 4, and wherein, stator 4 is the class T-shape, and it is fixedly mounted on the shell 1, is wound with stator winding on the stator 1.Rotor comprises the first rotor 2 and second rotor, 3 compositions, and the first rotor 2 is positioned at a side of stator 4 T-shapes and links to each other with power shaft 5, rotates under the drive of the wind turbine generator that links to each other with power shaft 5 (being demonstration among the figure).Second rotor 3 is located at the opposite side of the stator relative with the first rotor 4, and promptly angle is 180 degree between the first rotor and second rotor.Second rotor 3 links to each other with output shaft 6, and output shaft 6 other ends can link to each other with generating set.Be separately installed with the different permanent magnet of magnetic pole logarithm on the first rotor 2 and second rotor 3.During use, the first rotor 2 rotates under wind turbine generator drives, and excites stator 4 to produce exciting current; Electric current in the second rotor 3 induction stators 4 is in stator winding and drive output shaft 6 rotations under the permanent magnet of second rotor 3 cooperates.Because the speed increasing ratio of gear box equals the ratio between the permanent magnetism magnetic pole logarithm of the permanent magnetism magnetic pole logarithm of the first rotor 2 and second rotor 3.Therefore can realize the speedup or the deceleration of the different proportion of gear box by the permanent magnetism magnetic pole logarithm of adjusting the first rotor 2 and second rotor 3.
Embodiment 2
Basic identical with structure among the embodiment 1, difference is that stator 4 is class " U " type or class " Ω " type; The first rotor 2 is located at the inside of stator 4, and second rotor 3 is class " U " type or class " π " type, is located at the outside of stator 4.Can certainly be that second rotor is located at inside, and the first rotor be class " U " type or class " π " type, is located at the outside of stator.
Embodiment 3
A kind of method for changing speed of gear box, wherein, gear box mainly is made up of the first rotor 2 that links to each other with power shaft 5, second rotor 3 that links to each other with output shaft 6 and the stator 4 that is provided with stator winding, and the permanent magnet by different magnetic poles logarithm on the first rotor 2 and second rotor 3 cooperates stator winding to realize the speed change of gear box.
Wherein, the first rotor 2 rotates with n1 under the drive of wind turbine generator, and the stator winding on the stator 4 excites the generation exciting current through the first rotor 2, drives second rotor 3 and rotates with n2.
The speed increasing ratio K=n2/n1=P1/P2 of gear box, wherein, P1 is the magnetic pole logarithm of the first rotor 2, P2 is the magnetic pole logarithm of second rotor 3.
The above is preferred embodiment of the present invention only, is not that the present invention is done any pro forma qualification.Any change that is equal to, modification or differentiation etc. that all those skilled in the art utilize technical scheme of the present invention that the foregoing description is made all still belong in the scope of technical solution of the present invention.

Claims (8)

1. the method for changing speed of a gear box is characterized in that:
Mainly form, cooperate the speed change of the stator winding realization gear box of installing on the stator by the permanent magnet of the different magnetic poles logarithm that is provided with on the first rotor and second rotor by the first rotor that links to each other with power shaft, second rotor that links to each other with output shaft and the stator that is provided with stator winding.
2. the method for changing speed of gear box according to claim 1 is characterized in that:
Described the first rotor rotates with n1 under the drive of wind turbine generator, and the stator winding on the stator excites the generation exciting current through the first rotor, drives second rotor and rotates with n2.
3. the method for changing speed of gear box according to claim 1 is characterized in that:
The speed increasing ratio K=n2/n1=P1/P2 of described gear box, wherein, P1 is the magnetic pole logarithm of the first rotor, P2 is the magnetic pole logarithm of second rotor.
4. an electromagnetic gear case of making according to the method for changing speed of gear box described in the claim 1-3 comprises shell, stator and rotor, it is characterized in that:
Stator is fixedly mounted on the shell, twines stator winding on the stator; Rotor is made up of with second rotor that links to each other with output shaft the first rotor that links to each other with power shaft, and power shaft links to each other with wind turbine generator, is separately installed with the different permanent magnet of magnetic pole logarithm on the first rotor and second rotor.
5. electromagnetic gear case according to claim 4 is characterized in that:
The permanent magnet of installing on the described the first rotor rotates under the wind turbine generator that links to each other with power shaft drives, and excites described stator to produce exciting current; Electric current in described second rotor induction stator rotates with drive output shaft under the permanent magnet of second rotor cooperates at stator winding.
6. electromagnetic gear case according to claim 5 is characterized in that:
Described stator is the class T-shape, and the first rotor and second rotor are respectively in the both sides of stator.
7. electromagnetic gear case according to claim 5 is characterized in that:
Described stator is class " Ω " type or class " U " type, and the described the first rotor and second rotor are respectively in the interior outside of stator.
8. according to arbitrary described electromagnetic gear case among the claim 5-7, it is characterized in that:
The speed increasing ratio of gear box equals the ratio between the permanent magnetism magnetic pole logarithm of the permanent magnetism magnetic pole logarithm of the first rotor and second rotor.
CN201110069248XA 2011-03-22 2011-03-22 Speed change method of gear box and electromagnetic gear box CN102158045A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201110069248XA CN102158045A (en) 2011-03-22 2011-03-22 Speed change method of gear box and electromagnetic gear box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201110069248XA CN102158045A (en) 2011-03-22 2011-03-22 Speed change method of gear box and electromagnetic gear box

Publications (1)

Publication Number Publication Date
CN102158045A true CN102158045A (en) 2011-08-17

Family

ID=44439289

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201110069248XA CN102158045A (en) 2011-03-22 2011-03-22 Speed change method of gear box and electromagnetic gear box

Country Status (1)

Country Link
CN (1) CN102158045A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104578690A (en) * 2015-01-16 2015-04-29 浙江大学 Magnetic gear with variable width magnetic flux adjusting teeth
CN104578689A (en) * 2015-01-16 2015-04-29 浙江大学 Novel magnetic gear for two-way air-gap field

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005112235A1 (en) * 2004-05-18 2005-11-24 Synergetic Engineering Pty Ltd Hybrid propulsion system
CN101404440A (en) * 2008-11-17 2009-04-08 哈尔滨工业大学 Large-torque non-contact permanent magnet gear transmission based on space magnetic conductance modulation
CN100492870C (en) * 2006-12-14 2009-05-27 天津市新源电气科技有限公司 Constant frequency speed changing control system for telescopic double rotor fan
CN101487453A (en) * 2009-02-23 2009-07-22 东南大学 Variable-speed constant-frequency wind power generation plant
CN101492868A (en) * 2008-01-22 2009-07-29 上海和鹰机电科技有限公司 Speed reduction stop apparatus of batching round bar of cloth dragging machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005112235A1 (en) * 2004-05-18 2005-11-24 Synergetic Engineering Pty Ltd Hybrid propulsion system
CN100492870C (en) * 2006-12-14 2009-05-27 天津市新源电气科技有限公司 Constant frequency speed changing control system for telescopic double rotor fan
CN101492868A (en) * 2008-01-22 2009-07-29 上海和鹰机电科技有限公司 Speed reduction stop apparatus of batching round bar of cloth dragging machine
CN101404440A (en) * 2008-11-17 2009-04-08 哈尔滨工业大学 Large-torque non-contact permanent magnet gear transmission based on space magnetic conductance modulation
CN101487453A (en) * 2009-02-23 2009-07-22 东南大学 Variable-speed constant-frequency wind power generation plant

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104578690A (en) * 2015-01-16 2015-04-29 浙江大学 Magnetic gear with variable width magnetic flux adjusting teeth
CN104578689A (en) * 2015-01-16 2015-04-29 浙江大学 Novel magnetic gear for two-way air-gap field
CN104578689B (en) * 2015-01-16 2017-02-22 浙江大学 Novel magnetic gear for two-way air-gap field

Similar Documents

Publication Publication Date Title
CA2688376C (en) Multi-rotor electric machine
CN101016882B (en) Electric stepless speed change double power flow wind-power generator set
EP2011215B1 (en) Electrical machines
CN1756051B (en) Electrical machine with double-sided lamination stack
ES2555411T3 (en) Variable Magnetic Gears
US8358044B2 (en) Electric machine apparatus with integrated, high torque density magnetic gearing
Chan et al. Permanent-magnet machines for distributed power generation: A review
US7692357B2 (en) Electrical machines and assemblies including a yokeless stator with modular lamination stacks
CN104201848B (en) A kind of double-stator permanent magnet vernier wind-driven generator
US8183802B2 (en) Composite electromechanical machines with controller
JP2013505697A (en) Direct drive electrical equipment
US7385330B2 (en) Permanent-magnet switched-flux machine
CN101404433B (en) Miniature direct-drive permanent magnet synchronous aerogenerator and its small-sized wind power generation system
US9496768B2 (en) Electrical machines
CN201937358U (en) Rotary motor, direct-acting motor and wind-power electricity-generating system
CN104578632B (en) Motor
CN104600930B (en) Permanent magnet excitation brushless dual-feedback wind power generator
US20110042965A1 (en) Wind turbine power train
CN102315738B (en) The method of generator, wind turbine, assembling generator
CN101951048B (en) Direct-drive electric motor modulated basing on space magnetic field
CN101604901A (en) A kind of integrated motor
CN101465592A (en) Variable-frequency control electromagnetic torsion coupler and use thereof
CN107612252B (en) A kind of birotor axial disk magneto
CN104883015A (en) Dual-stator superconductive exciting field modulating motor
EP2676359A2 (en) An electrical machine

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20110817

C12 Rejection of a patent application after its publication