CN204425153U - A kind of novel alternative expression mixed excitation synchronous generator rotor - Google Patents
A kind of novel alternative expression mixed excitation synchronous generator rotor Download PDFInfo
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- CN204425153U CN204425153U CN201520184652.5U CN201520184652U CN204425153U CN 204425153 U CN204425153 U CN 204425153U CN 201520184652 U CN201520184652 U CN 201520184652U CN 204425153 U CN204425153 U CN 204425153U
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Abstract
A kind of novel alternative expression mixed excitation synchronous generator rotor, it relates to a kind of excitation synchronous generator rotor.The purpose of this utility model can not regulate permanent magnet generator excitation to solve prior art, and voltage regulation is excessive and affect the problem of operation stability.The utility model is field spider structure, comprise some excitation sides casket group, excitation side's casket group comprises first excitation side's casket group and second excitation side's casket group, first excitation side's casket group comprises two first excitation side's casket monomers, second excitation side's casket group comprises two second excitation side's casket monomers, two first excitation side's casket monomer intercalations are in the both sides of same pole body, and two second excitation side's casket monomer intercalations are in the both sides of same pole body, and first excitation side's casket group and second excitation side's casket group are alternately arranged.The utility model regulates composite excitation in real time according to wind speed, thus reaches the object of regulator generator set end voltage, overcomes the uncontrollable shortcoming of PM generator voltage.
Description
Technical field
The utility model relates to a kind of excitation synchronous generator rotor, is specifically related to a kind of novel alternative expression mixed excitation synchronous generator rotor, belongs to electrical engineering field.
Background technology
Rare-earth permanent-magnet electric machine, owing to being permanent magnet excitation, does not have excitation loss, and therefore efficiency is higher than electro-magnetic motor, and has the series of advantages such as structure is simple, reliability is high, thus obtains application at many industrial circles.In order to keep voltage constant in generator operation, need to carry out voltage-regulation, for permanent magnet generator, the change of rotating speed or the change of load current can cause the variation of output voltage, but because the air-gap field of magneto is by permanent magnet and the decision of magnetic circuit magnetic conductance.Regulate air-gap field difficulty and cause voltage-regulation difficulty, thus hindering development and the application of permanent magnet generator.
Utility model content
The purpose of this utility model can not regulate permanent magnet generator excitation to solve prior art, and voltage regulation is excessive and affect the problem of operation stability.
The technical solution of the utility model is: a kind of novel alternative expression mixed excitation synchronous generator rotor, for field spider structure, comprise rotor core and some excitation sides casket group, described excitation side casket group comprises first excitation side's casket group and second excitation side's casket group, described first excitation side's casket group comprises two first excitation side's casket monomers, second excitation side's casket group comprises two second excitation side's casket monomers, two first excitation side's casket monomer intercalations are in the both sides of same pole body, two second excitation side's casket monomer intercalations are in the both sides of same pole body, first excitation side's casket group and second excitation side's casket group are alternately arranged.
Described first excitation side's casket monomer and second excitation side's casket monomer include casket body, casket body comprises two-layer up and down, the upper and lower of first excitation side's casket monomer are electric excitation winding in casket, the upper strata of second excitation side's casket monomer is permanent magnet in casket, lower floor is electric excitation winding in casket, by regulating the size of electric current in upper and lower two-layer DC excitation winding, regulates air-gap flux, regulate the break-make of upper and lower winding, then the pole-changing that can realize motor runs.
The front end of permanent magnet and rotor core close contact in described casket, its upper and lower both sides and rear end are all by permeability alloys weldment and rotor core do not connect, and the not permeability alloys weldment adopted, one side is fine must be fixed on it rotary piston machine by permanent magnet, can reduce permanent magnet leakage field again.
In the same layer casket often organizing two first excitation side's casket monomers in first excitation side's casket group, electric excitation winding is connected in series, electric excitation winding in different layers is connected in parallel or is connected in series, often organize electric excitation winding in the same layer casket in two second excitation side's casket monomers in second excitation side's casket group to be connected in series, the levels electricity excitation winding of casket is controlled respectively, is independent of each other.
Described one novel alternative expression mixed excitation synchronous generator rotor comprises electric exciter control system, described electric exciter control system comprises brushless excitation device, rotating rectifier, transformer, signal detecting and measuring apparatus, excitation controller, rotary encoder, field effect transistor and A/D converter, output and the brushless excitation device of excitation controller connect, the output of brushless excitation device is connected by rotating rectifier and transformer, the output connection signal detector respectively of transformer, in the casket on casket body upper strata electric excitation winding and Xia Ti lower floor casket in electric excitation winding, in the casket on casket body upper strata electric excitation winding and Xia Ti lower floor casket in the output of electric excitation winding pass through isolated gate FET, A/D converter and rotary encoder and signal detecting and measuring apparatus connect, output and the excitation controller of signal detecting and measuring apparatus connect.
Described one novel alternative expression mixed excitation synchronous generator rotor comprises pole shoe, and be embedded with pole shoe permanent magnet and amortisseur bar above pole shoe, amortisseur bar is embedded in the both sides of pole shoe permanent magnet, and the permanent magnet on every lobe pole shoe reaches this excitation effect.Amortisseur bar on pole shoe mainly prevents generator impact to generator windings when load changes suddenly.
Described one novel alternative expression mixed excitation synchronous generator rotor comprises rotor yoke, rotor yoke is provided with ventilation ducts, the middle part of excitation side's casket group has radial ventilation mouth, radial ventilation mouth and ventilation ducts form rotor wind path, be hollow or cagelike structure in the middle of side's box structure, the heat that its object is to prevent electric excitation loss from producing cannot shed, therefore the fluid in rotor yoke back of the body ventilation ducts, the heat that winding can be produced, by hollow side's casket, take in stator ventilation ducts, be then discharged in air or in cooler and cool.
The utility model compared with prior art has following effect: a kind of serial electric excitation that the utility model proposes and permanent magnet wind power generator rotor new construction can regulate composite excitation in real time according to wind speed, thus reach the object of regulator generator set end voltage, overcome the uncontrollable shortcoming of PM generator voltage.This generator having new structure air-gap field comprises two parts: major part is set up by permanent magnet, is called permanent magnetism main generator part; Changes of magnetic field part required for voltage-regulation is realized by the electric excitation winding of assisting, and is called auxiliary generator or Auxiliary Part of Hybrid Excitation, and the pole-changing that simultaneously can realize motor runs, and the magnetic circuit of electricity excitation magnetic field and permanent magnetic field overlaps.Adopt not magnetic conduction side's box structure, add heat dissipation wind channel, the heat that permanent magnet and electric excitation winding produce can be led out in time, enhance the cooling effect of rotor.
Accompanying drawing explanation
Fig. 1, be the utility model overall structure schematic diagram;
Fig. 2, be left view of the present utility model;
Fig. 3, be pole shoe structure schematic diagram
Fig. 4, electric exciter control system circuit diagram.
In figure 1, amortisseur bar, 2, pole shoe permanent magnet, 3, ventilation ducts, 4, permanent magnet in casket, 5, electric excitation winding in casket, 6, radial ventilation mouth, 7, pole shoe, 8, pole body, 9, casket body, 10, brushless exciter, 11, rotating rectifier, 12, transformer, 13, casket upper strata electricity excitation winding equivalent electric circuit, 14, casket lower floor electricity excitation winding equivalent electric circuit, 15, signal detecting and measuring apparatus, 16, excitation controller 17, rotary encoder 18, isolated-gate field effect transistor (IGFET) 19, A/D digital to analog converter.
Embodiment
Accompanying drawings embodiment of the present utility model, the one novel alternative expression mixed excitation synchronous generator rotor of present embodiment, for field spider structure, comprise rotor core and some excitation sides casket group, described excitation side casket group comprises first excitation side's casket group and second excitation side's casket group, described first excitation side's casket group comprises two first excitation side's casket monomers, second excitation side's casket group comprises two second excitation side's casket monomers, two the first excitation side casket monomer intercalations are in the both sides of same pole body 8, two the second excitation side casket monomer intercalations are in the both sides of same pole body 8, first excitation side's casket group and second excitation side's casket group are alternately arranged.
Described first excitation side's casket monomer and second excitation side's casket monomer include casket body 9, casket body 9 comprises two-layer up and down, the upper strata that the upper and lower of first excitation side's casket monomer are electric excitation winding 5, second excitation side casket monomer in casket is permanent magnet 4 in casket, and lower floor is electric excitation winding 5 in casket.
The front end of permanent magnet 4 and rotor core close contact in described casket, its upper and lower both sides and rear end are all by permeability alloys weldment and rotor core do not connect.
In the same layer casket often organizing two first excitation side's casket monomers in first excitation side's casket group, electric excitation winding 5 is connected in series, in casket in different layers, electric excitation winding 5 is connected in parallel or is connected in series, and often organizes electric excitation winding 5 in the same layer casket in two second excitation side's casket monomers in second excitation side's casket group and is connected in series.
Described one novel alternative expression mixed excitation synchronous generator rotor comprises electric exciter control system, described electric exciter control system comprises brushless excitation device 10, rotating rectifier 11, transformer 12, signal detecting and measuring apparatus 15, excitation controller 16, rotary encoder 17, field effect transistor 18 and A/D converter 19, output and the brushless excitation device 10 of excitation controller 16 connect, the output of brushless excitation device 10 is connected by rotating rectifier 11 and transformer 12, the output connection signal detector 15 respectively of transformer 12, in the casket on casket body 9 upper strata electric excitation winding 5 and Xia Ti 9 lower floor casket in electric excitation winding 5, in the casket on casket body 9 upper strata electric excitation winding and Xia Ti 9 lower floor casket in the output of electric excitation winding by isolated gate FET 18, A/D converter 19 and rotary encoder 17 connect with signal detecting and measuring apparatus 15, output and the excitation controller 16 of signal detecting and measuring apparatus 15 connect.
As shown in Figure 4, for representing clear, electric excitation winding in the upper strata casket representing casket body 9 with casket upper strata electricity excitation equivalent electric circuit 13, electric excitation winding in the lower floor's casket representing casket body 9 with casket lower floor electricity excitation equivalent electric circuit 14, the exciter 10 controlled by excitation controller 16 sends alternating current through overexcitation, direct current is become through rotating rectifier 11, transformation is carried out again through transformer 12, electric current after transformer transformation leads to casket upper strata electricity excitation equivalent electric circuit 13 respectively and casket lower floor electricity excitation equivalent electric circuit 14 controls, the output of transformer 12 is connected for it provides power supply with signal detecting and measuring apparatus 15, principal current signal from casket lower floor electricity excitation equivalent electric circuit 14 out after, encode through rotary encoder 17 again after analog signal is converted into digital signal by A/D converter 19, then entering signal detector 15 is measured, finally circuit signal is fed back to excitation controller 16, to readjust the control to exciter, signal detecting and measuring apparatus 15, rotary encoder 17, isolated gate FET 18, A/D converter 19 be control system feedback element.
As shown in Figure 2, the novel alternative expression mixed excitation synchronous generator rotor of present embodiment comprises pole shoe 7, and be embedded with pole shoe permanent magnet 2 and amortisseur bar 11 above pole shoe 7, amortisseur bar 11 is embedded in the both sides of pole shoe permanent magnet 2.
The one of present embodiment novel alternative expression mixed excitation synchronous generator rotor comprises rotor yoke as shown in Figure 1, rotor yoke is provided with ventilation ducts 3, as shown in Figure 3, the middle part of excitation side's casket group of present embodiment has radial ventilation mouth 6, and radial ventilation mouth 6 and ventilation ducts 3 form rotor wind path.
It is the hollow effect rotated by rotor with the fluid making rotor yoke carry on the back flowing in ventilation ducts 3 in the middle of side's box structure, the heat that winding can be produced is by hollow side's casket, take in stator ventilation ducts 3, then be discharged in air or in cooler and cool, permanent magnet 4 in casket, be generally about 50% of rated load excitation size, in casket below casket body 9, the excitation magnetic kinetic potential of electric excitation winding 5 is about 50% of rated load excitation size to the maximum, and adjacent pole is made up of excitation winding 5 electric in upper and lower two-layer casket completely, in the casket of upper strata, the rated excitation magnetomotive force of electric excitation winding 5 is generally 50% of total specified excitation magnetic kinetic potential size, in the casket of lower floor, the rated excitation magnetomotive force of electric excitation winding 5 is 50% of total specified excitation magnetic kinetic potential size to the maximum.
Under each magnetic pole, jointly form magnetic circuit by permanent magnet and excitation winding, the size of permanent magnet, determined by the air-gap flux under Rated motor load, be about 30%-40% of air-gap flux under nominal load, when machine operation is in underloading, can only by permanent magnet in casket 4 excitation.Because the size of permanent magnet above pole body 8 and quantity are limited, therefore on every lobe pole shoe 7, are also all embedded with permanent magnet, reach this excitation effect.Amortisseur bar 11 on pole shoe 7 mainly prevents generator impact to generator windings when load changes suddenly.Generator is when load variations, and the electric current and voltage in its winding can form the process of a concussion.Amortisseur bar 11 is exactly increase resistance to this concussion process, forms damped vibration, thus forms certain cushioning effect.
Magnetic pole casket body 9 inner magnet distribution situation illustrates: get arbitrary magnetic pole, label is 1, when n=2k+1 (k=0,1,2,3 ...) time, excitation side's casket group of magnetic pole both sides is second excitation side's casket group, as n=2k (k=0,1,2,3 ...) time, excitation side's casket group of both sides is first excitation side's casket group.
Claims (7)
1. a novel alternative expression mixed excitation synchronous generator rotor, for field spider structure, it is characterized in that: comprise some excitation sides casket group, described excitation side casket group comprises first excitation side's casket group and second excitation side's casket group, described first excitation side's casket group comprises two first excitation side's casket monomers, second excitation side's casket group comprises two second excitation side's casket monomers, two the first excitation side casket monomer intercalations are in the both sides of same pole body (8), two the second excitation side casket monomer intercalations are in the both sides of same pole body (8), first excitation side's casket group and second excitation side's casket group are alternately arranged.
2. a kind of novel alternative expression mixed excitation synchronous generator rotor according to claim 1, it is characterized in that: described first excitation side's casket monomer and second excitation side's casket monomer include casket body (9), casket body (9) comprises two-layer up and down, the upper and lower of first excitation side's casket monomer are electric excitation winding (5) in casket, the upper strata of second excitation side's casket monomer is permanent magnet (4) in casket, and lower floor is electric excitation winding (5) in casket.
3. a kind of novel alternative expression mixed excitation synchronous generator rotor according to claim 2, it is characterized in that: described one novel alternative expression mixed excitation synchronous generator rotor comprises rotor core, the front end of permanent magnet (4) and rotor core close contact in casket, its upper and lower both sides and rear end are all by permeability alloys weldment and rotor core do not connect.
4. a kind of novel alternative expression mixed excitation synchronous generator rotor according to claim 3, it is characterized in that: in the same layer casket often organizing two first excitation side's casket monomers in first excitation side's casket group, electric excitation winding (5) is connected in series, in casket in different layers, electric excitation winding (5) is connected in parallel or is connected in series, and often organizes electric excitation winding (5) in the same layer casket in two second excitation side's casket monomers in second excitation side's casket group and is connected in series.
5. a kind of novel alternative expression mixed excitation synchronous generator rotor according to claim 4, it is characterized in that: described one novel alternative expression mixed excitation synchronous generator rotor comprises electric exciter control system, described electric exciter control system comprises brushless excitation device (10), rotating rectifier (11), transformer (12), signal detecting and measuring apparatus (15), excitation controller (16), rotary encoder (17), field effect transistor (18) and A/D converter (19), output and the brushless excitation device (10) of excitation controller (16) connect, the output of brushless excitation device (10) is connected by rotating rectifier (11) and transformer (12), output connection signal detector (15) respectively of transformer (12), in the casket on casket body (9) upper strata electric excitation winding (5) and casket body (9) lower floor casket in electric excitation winding (5), in the casket on casket body (9) upper strata electric excitation winding and casket body (9) lower floor casket in the output of electric excitation winding by isolated gate FET (18), A/D converter (19) and rotary encoder (17) connect with signal detecting and measuring apparatus (15), output and the excitation controller (16) of signal detecting and measuring apparatus (15) connect.
6. a kind of novel alternative expression mixed excitation synchronous generator rotor according to claim 5, it is characterized in that: described one novel alternative expression mixed excitation synchronous generator rotor comprises pole shoe (7), pole shoe (7) top is embedded with pole shoe permanent magnet (2) and amortisseur bar (1), and amortisseur bar (1) is embedded in the both sides of pole shoe permanent magnet (2).
7. a kind of novel alternative expression mixed excitation synchronous generator rotor according to claim 6, it is characterized in that: described one novel alternative expression mixed excitation synchronous generator rotor comprises rotor yoke, rotor yoke is provided with ventilation ducts (3), the middle part of excitation side's casket group has radial ventilation mouth (6), and radial ventilation mouth (6) and ventilation ducts (3) form rotor wind path.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520184652.5U CN204425153U (en) | 2015-03-30 | 2015-03-30 | A kind of novel alternative expression mixed excitation synchronous generator rotor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520184652.5U CN204425153U (en) | 2015-03-30 | 2015-03-30 | A kind of novel alternative expression mixed excitation synchronous generator rotor |
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| CN204425153U true CN204425153U (en) | 2015-06-24 |
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| CN201520184652.5U Expired - Fee Related CN204425153U (en) | 2015-03-30 | 2015-03-30 | A kind of novel alternative expression mixed excitation synchronous generator rotor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110601619A (en) * | 2019-09-20 | 2019-12-20 | 哈尔滨工业大学 | Mixed excitation flywheel pulse synchronous generator system |
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2015
- 2015-03-30 CN CN201520184652.5U patent/CN204425153U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110601619A (en) * | 2019-09-20 | 2019-12-20 | 哈尔滨工业大学 | Mixed excitation flywheel pulse synchronous generator system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20160330 |