CN108964299A - A kind of novel straight drive n*3 phase permanent magnet synchronous wind generator - Google Patents
A kind of novel straight drive n*3 phase permanent magnet synchronous wind generator Download PDFInfo
- Publication number
- CN108964299A CN108964299A CN201810603175.XA CN201810603175A CN108964299A CN 108964299 A CN108964299 A CN 108964299A CN 201810603175 A CN201810603175 A CN 201810603175A CN 108964299 A CN108964299 A CN 108964299A
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- China
- Prior art keywords
- fan
- permanent magnet
- phase
- magnet synchronous
- generator
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
-
- 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
Abstract
The invention discloses a kind of novel straight drive n*3 phase permanent magnet synchronous wind generators, include generator pit and alternator shaft, n fan-shaped electric motor units are circumferentially evenly equipped between generator pit and alternator shaft；Each sector electric motor units include a fan-shaped stator unit and a segmental rotor unit, and each sector stator unit is each attached on generator pit, and each segmental rotor unit is each attached on alternator shaft.The invention has the advantages that: each sector electric motor units are mutually indepedent on circuit, the failure of one fan-shaped electric motor units will not generate big influence to the operation of other fan-shaped electric motor units, each fan-shaped electric motor units can individually be controlled, each sector electric motor units warm back-up each other, to make entire generator system that there is good error resilience performance, generator, that is, exportable n group amplitude, the identical three-phase voltage of phase.
Description
Technical field
The present invention relates to motor fields, more particularly to the magneto alternator technical field with more electricity output ports,
In particular to a kind of novel straight drive n*3 phase permanent magnet synchronous wind generator, the novel straight drive n*3 phase permanent-magnet synchronous wind-force hair
It is compound electrically and mechanically that motor is three-phase permanent magnet synchronous motor.
Background technique
Existing wind-driven generator mainly has following two form: double-fed type and direct-drive type.No matter the power generation of which kind of form, all
It is based on three-phase permanent synchronous generator.Three-phase permanent synchro wind generator is in failures such as disconnected phase, short circuits, it is necessary to
It shuts down or restarts, poor robustness.Robustness, the fault-tolerance of polyphase machine are better than three-phase motor, but polyphase machine exists
It is but more complicated than three-phase motor in control.
Thus applicant carried out beneficial exploration and trial, result of the above problems is had found, will be detailed below being situated between
The scheme to continue is generated under this background.
Summary of the invention
Technical problem to be solved by the present invention lies in view of the deficiencies of the prior art with defect and provide a kind of novel
It is straight to drive n*3 phase permanent magnet synchronous wind generator.
Technical problem solved by the invention can be realized using following technical scheme:
A kind of novel straight drive n*3 phase permanent magnet synchronous wind generator includes generator pit and alternator shaft, spy
Sign is, n electric motor units are circumferentially furnished between the generator pit and the alternator shaft, and each electric motor units are equal
Including a fan-shaped stator unit and a segmental rotor unit, each sector stator unit is each attached on the generator pit,
Each segmental rotor unit is each attached on the alternator shaft；Each sector stator unit is by fan-shaped stator core and coiling
A set of threephase stator winding on the fan-shaped stator core is constituted, and it is anti-electric that every set threephase stator winding exports three-phase symmetrical
Gesture；Each segmental rotor unit is made of segmental rotor iron core and the permanent magnet being fixed on the segmental rotor iron core.
In a preferred embodiment of the invention, the neutral point of all fan-shaped electric motor units is connected with each other, can
To export n group amplitude, the identical three-phase voltage of phase.
In a preferred embodiment of the invention, each fan-shaped stator unit is all made of oat tail groove structure form and is fixed on
On the generator pit；Each segmental rotor unit is all made of oat tail groove structure form and is fixed on the alternator shaft.
In a preferred embodiment of the invention, each fan-shaped stator core by fan-shaped stator core stamping sheet punching press and
At each segmental rotor iron core is stamped to form by segmental rotor core stamping.
In a preferred embodiment of the invention, every set threephase stator winding is double-deck, short distance Distributed Winding.
In a preferred embodiment of the invention, the maximum value a of the parallel branch number a of every set threephase stator windingmaxIt is full
Foot: amax=2p, wherein p is the number of pole-pairs of motor.
It in a preferred embodiment of the invention, further include the first fan and the second fan, first fan is fixed
In one end of the alternator shaft, second fan is fixed on the other end of the alternator shaft；At each fan-shaped turn
The ventilation hole axially through the segmental rotor iron core is provided in sub- iron core.
It in a preferred embodiment of the invention, further include first end cover and second end cover, the first end cover is located at
The outside of first fan is simultaneously mounted on one end of the alternator shaft, the second end cover by first bearing component
Positioned at second fan outside and be mounted on the other end of the alternator shaft by second bearing component.
It in a preferred embodiment of the invention, further include a flange, the flange is fixed on the generator pit
Side and be located at the first end cover outside.
It in a preferred embodiment of the invention, further include a radome fairing, the radome fairing is fixed on the generator
The other side of base and the outside for being located at the second end cover.
Due to using technical solution as above, the beneficial effects of the present invention are: each sector motor in structure of the invention
Unit is mutually indepedent on circuit, and the failure of a fan-shaped electric motor units will not generate the operation of other fan-shaped electric motor units big
Influence, each fan-shaped electric motor units can individually be controlled, each fan-shaped electric motor units warm back-up each other, to make entirely to generate electricity
Machine system has good error resilience performance, generator, that is, exportable n group amplitude, the identical three-phase voltage of phase.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of novel straight drive 6*3 phase permanent magnet synchronous wind generator structural schematic diagram.
Fig. 2 is the longitudinal section view schematic diagram of generator.
Fig. 3 is the structural schematic diagram of fan-shaped electric motor units.
Fig. 4 is the threephase stator winding distribution map of the fan-shaped stator unit by taking 4 grade of 24 slot as an example.
Fig. 5 is a kind of novel straight drive 6*3 phase permanent magnet synchronous wind generator cutting-in control frame schematic diagram.
Fig. 6 is a kind of novel straight drive 6*3 phase permanent magnet synchronous wind generator no-load back electromotive force figure.
Fig. 7 is a kind of novel straight drive 6*3 phase permanent magnet synchronous wind generator torque-output characteristics figure.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below into
One step illustrates the present invention.
The novel straight drive 6*3 phase permanent magnet synchronous wind generator of one kind as shown in Figures 1 to 5, including a generator machine
One end 210 of seat 100 and the alternator shaft 200 being arranged in generator pit 100, alternator shaft 200 connects the first wind
Fan 412, the outer fix of the first fan 412 have first end cover 410 to be mounted on alternator shaft by first bearing component 430
On 200 one end 210, the outside of first end cover 410 has a flange 411 to be fixed on generator pit 100, first bearing component
430 include the inside and outside lid 431,432 of first bearing and the first deep groove ball bearing 433, and first bearing outer cover 432 is arranged in flange 411
Center simultaneously connects first end cover 410, and first bearing inner cover 431 is arranged between first end cover 410 and the first fan 412 simultaneously
First end cover 410 is connected, the first deep groove ball bearing 433 is fixed in drive end bearing bracket 410 by the inside and outside lid 431,432 of first bearing.
The first fan 412 is fixed on alternator shaft 200 1 by the self-locking acorn nut (not shown) of hexagonal in the present embodiment
End 210, the inside and outside lid 431,432 of first bearing passes through hexagonal combination bolt (not shown) and first end with spring washer
Lid 410 is fixed, and flange 411 is fixed by the hexagonal combination bolt (not shown) with spring washer and generator pit 100.
The other end 220 of alternator shaft 200 is fixed with the second fan 422, and the outer fix of the second fan 422 has second
End cap 420 is mounted on the other end 220 of alternator shaft 200 by second bearing component 440, the outside of second end cover 420
Position has a radome fairing 421 to be fixed on generator pit 100, second bearing component 440 include the inside and outside lid 441 of second bearing,
442 and second deep groove ball bearing 443, second bearing outer cover 442 be arranged between second end cover 420 and radome fairing 421 and connect
Second end cover 420, second bearing inner cover 441 are arranged between second end cover 420 and the second fan 422 and connect second end cover
420, the second deep groove ball bearing 443 is fixed in second end cover 420 by the inside and outside lid 441,442 of second bearing.In the present embodiment
In the second fan 422 200 other end 220 of alternator shaft is fixed on by the combination nut with spring washer, in second bearing,
Outer cover 441,442 is fixed by the hexagonal combination bolt with spring washer and second end cover 420, and radome fairing 421 passes through hexagonal spiral shell
Bolt and generator pit 100 are fixed.
6 fan-shaped electric motor units 300, each sector are circumferentially evenly equipped between generator pit 100 and alternator shaft 200
Using the magnetic of thermosetting epoxy resin production, the isolation of thermal isolation layer between electric motor units 300, each sector electric motor units 300 are
Including a fan-shaped stator unit 310 and a segmental rotor unit 320.Each sector stator unit 310 is each attached to generator machine
On seat 100, each sector stator unit 310 includes a fan-shaped stator core 311 and is wound on fan-shaped stator core 311
A set of threephase stator winding 312, every set threephase stator winding 312 can export three-phase symmetrical back-emf.Each sector stator
Iron core 311 is stamped to form by fan-shaped stator iron-core lamination.
Each segmental rotor unit 320 is each attached on alternator shaft 200, and each segmental rotor unit 320 includes
Permanent magnet 321 and segmental rotor iron core 322, each permanent magnet 321 are all made of epoxide-resin glue and are fixed on segmental rotor iron core 322
On, each segmental rotor iron core 322 is stamped to form by segmental rotor iron-core lamination, in each segmental rotor iron core 322
It is provided with the ventilation hole 323 axially through segmental rotor iron core 322.Fan-shaped stator unit 310 each in the present embodiment with
It is fixed on generator pit 100 using oat tail groove structure form；Each segmental rotor unit 320 is all made of oat tail groove structure shape
Formula is fixed on alternator shaft 200, has dovetail on each sector stator unit 310 and each segmental rotor unit 320
521,522, it is provided with dovetail groove 511,512 on generator pit 100 and alternator shaft 200 and cooperates dovetail 521,522.
The threephase stator winding distribution map of fan-shaped stator unit by taking 4 grade of 24 slot as an example as shown in Figure 4, fan-shaped electric motor units
300 threephase stator winding 312 is using double-deck, short distance Distributed Winding, the 1st to the 24th slot conductor of threephase stator winding 312
Upper layer side indicate that the lower layer side of the 1st to the 24th slot indicates that upper layer is at 1 and lower layer 6 ' with number 1 ' -24 ' with number 1-24
Constitute coil 1, upper layer at 2 and lower layer 7 ' constitute coil 2, lower layer while 6 ' with upper layer while 2 be connected after, coil 1 and coil 2 series connection
Form first winding of A phase；Upper layer 12 ' composition coil 3 at 7 and lower layer, upper layer 13 ' composition coil 4 at 8 and lower layer,
Lower layer's 8 connections at 12 ' and upper layer, coil 3 and coil 4 are composed in series second winding of A phase；Upper layer is at 13 and lower layer
18 ' constitute coils 5, upper layer at 14 and lower layer 19 ' constitute coil 6, lower layer while 18 ' with upper layer while 14 be connected after, coil 5 and line
Circle 6 is composed in series the third winding of A phase；Upper layer 24 ' composition coil 7, upper layer 1 ' structure at 20 and lower layer at 19 and lower layer
At coil 7, lower layer's 20 connections at 24 ' and upper layer, then coil 7 and coil 8 are composed in series the 4th winding of A phase.
In generator, the maximum value a of the parallel branch number a of threephase stator winding 312maxMeet: amax=2p, wherein p
For the number of pole-pairs of motor.Therefore, electric motor units 300 extremely fan-shaped for shown in Fig. 44, the parallel branch number of winding have 1,2,4 three
Kind.By taking parallel branch number a=1 as an example, 7 ' and 13 ' connections, 7 and 13 connections, 19 ' and 1 ' is connected, then the 4 of A phase windings in series
Constitute the A phase winding of electric motor units.A phase voltage is equal to the vector sum for the induced voltage that 4 windings generate, and flows through 4 windings
Electric current it is equal.B, the winding distribution of C two-phase is similar with A phase.As shown in figure 4, A, X are the lead-out wire of A phase winding, B, Y are B phase
The lead-out wire of winding, C, Z are the lead-out wire of C phase winding.
A kind of novel straight drive 6*3 phase permanent magnet synchronous wind generator cutting-in control frame schematic diagram as shown in Figure 5, will be each
After the neutral point connection of fan-shaped electric motor units 300, permanent magnet synchronous wind generator, that is, exportable 6 groups of amplitudes, phase identical three
Phase voltage.Compared to conventional polyphase machine, the present invention only needs one group of inverter module that can carry out simultaneously network control to 6 groups of three-phase voltages
System.
A kind of novel straight drive 6*3 phase permanent magnet synchronous wind generator no-load back electromotive force figure as shown in Figure 6.6 sectors
The unloaded back-emf that electric motor units 300 export is completely coincident (A1, A2, A3, A4, A5, A6 coincidence, B1, B2, B3, B4, B5, B6 weight
It closes, C1, C2, C3, C4, C5, C6 are overlapped；120 ° of electrical angles of A1, B1, C1 mutual deviation, 120 ° of electrical angles of A2, B2, C2 mutual deviation, A3, B3,
120 ° of electrical angles of C3 mutual deviation, 120 ° of electrical angles of A4, B4, C4 mutual deviation, 120 ° of electrical angles of A5, B5, C5 mutual deviation, A6, B6, C6 mutual deviation
120 ° of electrical angles).
A kind of novel straight drive 6*3 phase permanent magnet synchronous wind generator torque-output characteristics figure as shown in Figure 7, fan-shaped motor
Unit 310 and fan-shaped electric motor units 320 are equal with the electromagnetic torque that fan-shaped electric motor units 310 and fan-shaped electric motor units 330 export,
And 2 times for being that independent fan-shaped electric motor units 310 or fan-shaped electric motor units 320 or fan-shaped electric motor units 330 export electromagnetic torque；Fan
The electromagnetic torque that shape electric motor units 310, fan-shaped electric motor units 320 and fan-shaped electric motor units 330 export is independent fan-shaped motor list
Member 310 or fan-shaped electric motor units 320 or fan-shaped electric motor units 330 export 3 times of electromagnetic torque；Fan-shaped electric motor units 310 to 360
The electromagnetic torque of output is that fan-shaped electric motor units 310 or fan-shaped electric motor units 320 or fan-shaped electric motor units 330 export electromagnetic torque
6 times；It follows that the electromagnetic torque of n*3 permanent magnet synchronous wind generator output is that each fan-shaped electric motor units 300 export electricity
The summation of magnetic torque meets the superimposed characteristics of permanent magnet synchronous wind generator output torque well；It also illustrates simultaneously every
Independence and repeatability between a sector electric motor units 300.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (10)
1. a kind of novel straight drive n*3 phase permanent magnet synchronous wind generator includes generator pit and alternator shaft, feature
It is, n fan-shaped electric motor units, each fan-shaped electricity is circumferentially evenly equipped between the generator pit and the alternator shaft
Completely cut off between machine unit using magnetic, thermal isolation layer；Each sector electric motor units include a fan-shaped stator unit and one fan-shaped turn
Subelement, each sector stator unit are each attached on the generator pit, and each segmental rotor unit is each attached to described
On alternator shaft；Each sector stator unit by fan-shaped stator core and be wound on the fan-shaped stator core a set of three
Phase stator winding is constituted, and every set threephase stator winding exports three-phase symmetrical back-emf；Each segmental rotor unit is turned by sector
Sub- iron core and the permanent magnet being fixed on the segmental rotor iron core are constituted.
2. novel straight drive n*3 phase permanent magnet synchronous wind generator as described in claim 1, which is characterized in that all fans
The neutral point of shape electric motor units is connected with each other, and exports n group amplitude, the identical three-phase voltage of phase.
3. novel straight drive n*3 phase permanent magnet synchronous wind generator as described in claim 1, which is characterized in that each sector
Stator unit is all made of oat tail groove structure form and is fixed on the generator pit；Each segmental rotor unit is all made of dovetail
Slot structure form is fixed on the alternator shaft.
4. novel straight drive n*3 phase permanent magnet synchronous wind generator as described in claim 1, which is characterized in that each sector
Stator core is stamped to form by fan-shaped stator core stamping sheet, each segmental rotor iron core by the punching press of segmental rotor core stamping and
At.
5. novel straight drive n*3 phase permanent magnet synchronous wind generator as described in claim 1, which is characterized in that every set three-phase
Stator winding is double-deck, short distance Distributed Winding.
6. novel straight drive n*3 phase permanent magnet synchronous wind generator as described in claim 1, which is characterized in that every set three-phase
The maximum value a of the parallel branch number a of stator windingmaxMeet: amax=2p, wherein p is the number of pole-pairs of motor.
7. the novel straight drive n*3 phase permanent magnet synchronous wind generator as described in any one of claim 1 to 6 claim,
It is characterized in that, further includes the first fan and the second fan, first fan is fixed on one end of the alternator shaft, described
Second fan is fixed on the other end of the alternator shaft；It is provided in each fan-shaped stator core axially through described
The ventilation hole of fan-shaped stator core.
8. novel straight drive n*3 phase permanent magnet synchronous wind generator as claimed in claim 7, which is characterized in that further include the
One end cap and second end cover, the first end cover are located at the outside of first fan and are mounted on institute by first bearing component
It states on one end of alternator shaft, the second end cover is located at the outside of second fan and is installed by second bearing component
On the other end of the alternator shaft.
9. novel straight drive n*3 phase permanent magnet synchronous wind generator as claimed in claim 8, which is characterized in that in the present invention
A preferred embodiment in, further include a flange, the flange is fixed on the side of the generator pit and is located at described
The outside of first end cover.
10. novel straight drive n*3 phase permanent magnet synchronous wind generator as claimed in claim 9, which is characterized in that further include one
Radome fairing, the radome fairing are fixed on the other side of the generator pit and are located at the outside of the second end cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810603175.XA CN108964299B (en) | 2018-06-12 | 2018-06-12 | Novel direct-drive n x 3 phase permanent magnet synchronous wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810603175.XA CN108964299B (en) | 2018-06-12 | 2018-06-12 | Novel direct-drive n x 3 phase permanent magnet synchronous wind driven generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108964299A true CN108964299A (en) | 2018-12-07 |
| CN108964299B CN108964299B (en) | 2021-04-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810603175.XA Active CN108964299B (en) | 2018-06-12 | 2018-06-12 | Novel direct-drive n x 3 phase permanent magnet synchronous wind driven generator |
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| Country | Link |
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| CN (1) | CN108964299B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110838720A (en) * | 2019-11-18 | 2020-02-25 | 长沙晟道电气科技有限公司 | Direct-current series-parallel offshore wind power plant based on multi-winding permanent magnet generator and control method thereof |
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| CN108964299B (en) | 2021-04-13 |
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