CN105356706A - Low-rotation-speed disk-type doubly-fed generator and exciting current applying method thereof - Google Patents
Low-rotation-speed disk-type doubly-fed generator and exciting current applying method thereof Download PDFInfo
- Publication number
- CN105356706A CN105356706A CN201510930695.8A CN201510930695A CN105356706A CN 105356706 A CN105356706 A CN 105356706A CN 201510930695 A CN201510930695 A CN 201510930695A CN 105356706 A CN105356706 A CN 105356706A
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- CN
- China
- Prior art keywords
- stator
- rotor
- magnetic steel
- magnet steel
- disk
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- Legal status (The legal status 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 status listed.)
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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
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
-
- 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
- H02K1/17—Stator cores with permanent magnets
-
- 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
- H02K1/2793—Rotors axially facing stators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
- H02P9/26—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices
- H02P9/30—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices using semiconductor devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The invention discloses a low-rotation-speed disk-type doubly-fed generator and an exciting current applying method thereof. The low-rotation-speed disk-type doubly-fed generator comprises a motor housing and a rotor shaft. The motor housing is provided with a stator disk. 4N+1 pieces of cylindrical stator magnetic steel are successively arranged along the circumferential direction of the stator disk. Each piece of stator magnetic steel is wound by an enamelled coil, and all the enamelled coils are connected to form an output coil. A rotor disk is fixedly arranged on the rotor shaft. Two groups of rotor magnetic steel, which are radially symmetric relative to rotor disk, are arranged on the circumferential direction of the rotor disk, each piece of rotor magnetic steel is also wound by an enamelled coil. The enamelled coils of the first group of rotor magnetic steel are connected to form a first exciting coil, and the enamelled coils of the second group of rotor magnetic steel are connected to form a second exciting coil. The low-rotation-speed disk-type doubly-fed generator overcomes the defects that the rotation speed needed by a routine non-salient pole doubly-fed generator is too high and grid connection is difficult, the energy conversion efficiency is high, and an important technical support is provided for collection, power generation and reliable grid connection of low-quality energy such as micro wind and micro water.
Description
Technical field
The present invention relates to a kind of generator, particularly a kind of disk generator of AC excitation.
Background technology
Renewable gentle breeze, micro-water equal energy source, as the important component part of current energy source, have important strategic importance to the sustainable development of national economy and the general advance of society.
In prior art, in wind power generation field, for the generating that capacity is less, usually adopt permanent magnet generator generating, then utilize various electronic power inversion device to carry out inversion grid connection; For the generating that Capacity Ratio is larger, use electrical power generators is adopted to there is the shortcomings such as current transformer cost is too high, reliability is too low.
Therefore often adopt hidden pole type double-fed generator in the larger occasion of capacity, carry out AC excitation and unconventional DC excitation to rotor, the frequency of exciting current is added to be exported, and makes output voltage follow network voltage so that grid-connected.But because hidden pole type double-fed generator magnetic pole logarithm is few, rotation speed of fan is low, for the ease of grid-connected, also need to adopt change gear box speedup, then just drive electrical generators electricity generation grid-connecting, and gearbox friction is serious, greatly can reduce conversion efficiency.
Therefore, be necessary to design and develop a kind of new generator, make the randomness new forms of energy such as the micro-water of gentle breeze be convenient to gather generating and flexibility grid-connected, realize the efficiency utilization to energy resources.
Summary of the invention
In view of this, the invention provides a kind of slow-speed of revolution disc type double-fed generator and exciting current applying method thereof, need rotating speed high to solve existing hidden pole type double-fed generator, the shortcoming such as grid-connected difficulty, conversion efficiency are low.
Slow-speed of revolution disc type double-fed generator of the present invention, comprise motor casing and armature spindle, described motor casing is provided with stator disc, described stator disc is along the circumferential direction furnished with successively the 1st cylinder shape stator magnet steel, the 2nd cylinder shape stator magnet steel, the 3rd cylinder shape stator magnet steel ..., 4N+1 cylinder shape stator magnet steel, N is natural number; The axial line of each magnetic steel of stator and the axis parallel of stator disc; Each magnetic steel of stator is wound with enameled wire loop, forward connects in the enameled wire loop on odd number magnet steel in the magnetic steel of stator of 4N+1 on stator disc, all the other enameled wire loop differential concatenations form output winding;
Described armature spindle is fixedly installed rotor disk, rotor disk is coaxial with stator disc, circumferential on described rotor disk is provided with two groups of rotor magnetic steels arranged relative to rotor disk radial symmetric, every group rotor magnet steel comprises 2N rotor magnetic steel respectively, and adjacent magnet steel spacing often in group is identical with magnet steel spacing adjacent on stator disc; Each rotor magnetic steel is also wound with enameled wire loop respectively, enameled wire loop in first group rotor magnet steel adopts the forward series connection identical with the enameled wire loop on magnetic steel of stator and differential concatenation mode to connect and compose the first magnet exciting coil, and the enameled wire loop in the second group rotor magnet steel also adopts the forward series connection identical with the enameled wire loop on magnetic steel of stator and differential concatenation connected mode to connect and compose the second magnet exciting coil.
The exciting current applying method of slow-speed of revolution disc type double-fed generator of the present invention, the exciting curent of described first group rotor magnet steel applies by the sinusoidal rule containing compensation rate, the exciting curent of the second group rotor magnet steel applies by containing the cosine rule compensated, the exciting curent amplitude of two groups is identical, and amplitude applies by stator output voltage and idle requirement.
Beneficial effect of the present invention:
Slow-speed of revolution disc type double-fed generator of the present invention and exciting current applying method thereof, which overcoming conventional hidden pole type double-fed generator needs rotating speed high, the deficiencies such as grid-connected difficulty, conversion efficiency is high, for the low product such as gentle breeze, micro-water energy resource collecting, generating, reliable grid connection provide important technical guarantee.
Accompanying drawing explanation
Fig. 1 is the sectional perspective decomposition texture schematic diagram of the present embodiment slow-speed of revolution disc type double-fed generator;
Fig. 2 is the simplest single-phase converter topology diagram, wherein E1, E2-exciter converter DC side power supply, V1-V4-full-control type power electronic switching device, D1-D4-Power Diode Pumped, L1R1-first group of excitation winding, L2R2 second group of excitation winding;
Fig. 3 is stator output equivalent circuit theory diagrams.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in the figure, the present embodiment slow-speed of revolution disc type double-fed generator, comprise motor casing and armature spindle, described motor casing is provided with stator disc 1, described stator disc is along the circumferential direction furnished with successively the 1st cylinder shape stator magnet steel, the 2nd cylinder shape stator magnet steel, the 3rd cylinder shape stator magnet steel ..., 4N+1 cylinder shape stator magnet steel, N is natural number; Each axial line of magnetic steel of stator 2 and the axis parallel of stator disc; Each magnetic steel of stator is wound with enameled wire loop, forward connects in the enameled wire loop on odd number magnet steel in the magnetic steel of stator of 4N+1 on stator disc, all the other enameled wire loop differential concatenations form output winding;
Described armature spindle is fixedly installed rotor disk 3, rotor disk is coaxial with stator disc, and circumferential on described rotor disk is provided with two groups of rotor magnetic steels 4 arranged relative to rotor disk radial symmetric, every group rotor magnet steel comprises 2N rotor magnetic steel respectively; And adjacent magnet steel spacing often in group is identical with magnet steel spacing adjacent on stator disc; Each rotor magnetic steel is also wound with enameled wire loop respectively, enameled wire loop in first group rotor magnet steel adopts the forward series connection identical with the enameled wire loop on magnetic steel of stator and differential concatenation mode to connect and compose the first magnet exciting coil, and the enameled wire loop in the second group rotor magnet steel also adopts the forward series connection identical with the enameled wire loop on magnetic steel of stator and differential concatenation connected mode to connect and compose the second magnet exciting coil.
The exciting current applying method of slow-speed of revolution disc type double-fed generator of the present invention, the exciting curent of described first group rotor magnet steel applies by the sinusoidal rule containing compensation rate, the exciting curent of the second group rotor magnet steel applies by containing the cosine rule compensated, the exciting curent amplitude of two groups is identical, and amplitude applies by stator output voltage and idle requirement.
The present embodiment slow-speed of revolution disc type double-fed generator, when stationary rotor, the first magnet exciting coil can apply exciting current I
1=C
1sin (W
1t+ Ф
1), the second magnet exciting coil electric current can apply exciting current I
2=C
1cos (W
1t+ Ф
1) time, W
1be the magnet exciting coil exciting current angular speed, Ф
1be two magnet exciting coil exciting current first phase values, C
1it is the coefficient of stator output voltage or idle decision.
The voltage fundamental that stator induction exports is:
U
01=u
1+ u
2=C
2[cos (W
1t+ Ф
1)+i*sin (W
1t+ Ф
1)], wherein i is the imaginary part of output voltage vector; Voltage fundamental mould is U
0=C
2, be constant; u
1for exciting current I
1output voltage vector real part, the u of induction
2for exciting current I
2the output voltage vector imaginary part of induction;
As rotor excitation current angular speed W
1=0, when rotor rotates, stator by the voltage fundamental rotating output is:
U
02=C
3[sin (W
2t+ Ф
2)+i*cos (W
2t+ Ф
2)], W
2determined by rotor angular velocity of rotation and magnetic steel magnetic pole logarithm;
Due to u
01+ u
02meet overlaying relation after series connection, thus when magnetic curent change and rotor rotate time, total fundamental voltage output of voltage u
0=C
4[sin (W
1+ W
2) t+ (Ф
1+ Ф
2)]; C
4total output voltage amplitude, with exciting current amplitude and the decision such as angular speed, rotor speed; W
1exciting current angular frequency, W
2the induced voltage angular speed that rotor produces, Ф
1, Ф
2exciting current and rotor initial phase value.
As exciting current I
1during increase, output voltage C
2amplitude increases thereupon; As exciting current angular speed W
1during increase, output voltage frequency also increases thereupon; As exciting current phase place Ф
1during change, output voltage first phase also responds and changes thereupon.
Slow-speed of revolution disc type double-fed generator of the present invention and exciting current applying method thereof, which overcoming conventional hidden pole type double-fed generator needs rotating speed high, the deficiencies such as grid-connected difficulty, conversion efficiency is high, for the low product such as gentle breeze, micro-water energy resource collecting, generating, reliable grid connection provide important technical guarantee.
The axial cross section of magnetic steel of stator described in the present embodiment and rotor magnetic steel is all in I-shaped, so output voltage has certain harmonic wave, adopts exciting current applying method in the present embodiment can remove this harmonic components.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (2)
1. a slow-speed of revolution disc type double-fed generator, comprise motor casing and armature spindle, it is characterized in that: described motor casing is provided with stator disc, described stator disc is along the circumferential direction furnished with successively the 1st cylinder shape stator magnet steel, the 2nd cylinder shape stator magnet steel, the 3rd cylinder shape stator magnet steel ..., 4N+1 cylinder shape stator magnet steel, N is natural number; The axial line of each magnetic steel of stator and the axis parallel of stator disc; Each magnetic steel of stator is wound with enameled wire loop, forward connects in the enameled wire loop on odd number magnet steel in the magnetic steel of stator of 4N+1 on stator disc, all the other enameled wire loop differential concatenations form output winding;
Described armature spindle is fixedly installed rotor disk, rotor disk is coaxial with stator disc, circumferential on described rotor disk is provided with two groups of rotor magnetic steels arranged relative to rotor disk radial symmetric, every group rotor magnet steel comprises 2N rotor magnetic steel respectively, and adjacent magnet steel spacing often in group is identical with magnet steel spacing adjacent on stator disc; Each rotor magnetic steel is also wound with enameled wire loop respectively, enameled wire loop in first group rotor magnet steel adopts the forward series connection identical with the enameled wire loop on magnetic steel of stator and differential concatenation mode to connect and compose the first magnet exciting coil, and the enameled wire loop in the second group rotor magnet steel also adopts the forward series connection identical with the enameled wire loop on magnetic steel of stator and differential concatenation connected mode to connect and compose the second magnet exciting coil.
2. the exciting current applying method of slow-speed of revolution disc type double-fed generator described in a claim 1, it is characterized in that: the exciting curent of described first group rotor magnet steel applies by the sinusoidal rule containing compensation rate, the exciting curent of the second group rotor magnet steel applies by containing the cosine rule compensated, the exciting curent amplitude of two groups is identical, and amplitude applies by stator output voltage and idle requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510930695.8A CN105356706B (en) | 2015-12-14 | 2015-12-14 | Slow-speed of revolution disc type double-fed generator and its exciting current applying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510930695.8A CN105356706B (en) | 2015-12-14 | 2015-12-14 | Slow-speed of revolution disc type double-fed generator and its exciting current applying method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105356706A true CN105356706A (en) | 2016-02-24 |
| CN105356706B CN105356706B (en) | 2017-09-15 |
Family
ID=55332607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510930695.8A Expired - Fee Related CN105356706B (en) | 2015-12-14 | 2015-12-14 | Slow-speed of revolution disc type double-fed generator and its exciting current applying method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105356706B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6211593B1 (en) * | 1998-10-28 | 2001-04-03 | Okuma Corporation | Synchronous motor with permanent magnet provided on magnetic pole end |
| CN2831596Y (en) * | 2005-09-20 | 2006-10-25 | 沈阳工业大学 | Disk-type brushless double-feedback a.c.dynamo |
| CN202435218U (en) * | 2012-01-19 | 2012-09-12 | 东南大学 | Axial brushless doubly-fed motor |
| CN104935222A (en) * | 2015-06-03 | 2015-09-23 | 华中科技大学 | Brushless double-feed induction generator rotating speed estimation system |
| CN205160325U (en) * | 2015-12-14 | 2016-04-13 | 重庆理工大学 | Disk slow -speed of revolution double -fed generator |
-
2015
- 2015-12-14 CN CN201510930695.8A patent/CN105356706B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6211593B1 (en) * | 1998-10-28 | 2001-04-03 | Okuma Corporation | Synchronous motor with permanent magnet provided on magnetic pole end |
| CN2831596Y (en) * | 2005-09-20 | 2006-10-25 | 沈阳工业大学 | Disk-type brushless double-feedback a.c.dynamo |
| CN202435218U (en) * | 2012-01-19 | 2012-09-12 | 东南大学 | Axial brushless doubly-fed motor |
| CN104935222A (en) * | 2015-06-03 | 2015-09-23 | 华中科技大学 | Brushless double-feed induction generator rotating speed estimation system |
| CN205160325U (en) * | 2015-12-14 | 2016-04-13 | 重庆理工大学 | Disk slow -speed of revolution double -fed generator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105356706B (en) | 2017-09-15 |
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Granted publication date: 20170915 Termination date: 20181214 |
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| CF01 | Termination of patent right due to non-payment of annual fee |