CN200947563Y - Composite wind permanent-magnet synchronous generator - Google Patents
Composite wind permanent-magnet synchronous generator Download PDFInfo
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- CN200947563Y CN200947563Y CN 200620052228 CN200620052228U CN200947563Y CN 200947563 Y CN200947563 Y CN 200947563Y CN 200620052228 CN200620052228 CN 200620052228 CN 200620052228 U CN200620052228 U CN 200620052228U CN 200947563 Y CN200947563 Y CN 200947563Y
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Abstract
The utility model discloses a composite wind power permanent magnet synchronous generator, which includes a machine shell, a rotor and a stator which are arranged in the machine shell, the stator includes an inner stator and an outer stator, the inner stator and the outer stator are respectively arranged at the internal diameter side and the external diameter side of the rotor, an inner gas gap is formed between the internal diameter sides of the inner rotor and the stator, an outer gas gap is formed between the external diameter sides of the outer stator and the rotor; the inner stator armature windings and outer stator armature windings are respectively arranged on the inner stator and the outer stator. The utility model is a composite wind power permanent magnet synchronous generator with simple and compact structure, big power density and wide range of application, which is conductive to the wind power capture.
Description
Technical field
The utility model is mainly concerned with the wind power plant field, refers in particular to a kind of combined type wind power magneto alternator.
Background technology
Wind power generation has the remarkable environmental benefit, and wind power generation is all more and more paid attention in countries in the world.Two critical pieces of wind generator system are wind energy conversion system and generator.The rotating speed of wind energy conversion system depends on wind speed usually, and wind speed is constantly to change, and the change of wind speed can cause the wind energy conversion system velocity variations, so the input power of the wind energy conversion system of wind generator system acquisition constantly changes with wind speed.The wind generator system that is incorporated into the power networks at present mainly carries out the input power that power adjustments is come regulator generator to wind energy conversion system, and generator is connected operation through grid-connected converter with transformer with electrical network.Synchronous generator+uncontrollable rectification+the inverter circuit that is used for wind generator system at present can't be with energy feed-in electrical network when hanging down wind speed; Synchronous generator+controlled rectification+inverter circuit power factor (PF) is low and can't be with energy feed-in electrical network when low wind speed; The electric energy feed-in electrical network when though synchronous generator+uncontrollable rectification+booster circuit+inverter circuit can will hang down wind speed, this circuit is controlled more complicated and has been increased cost; The multiple generator scheme when different wind speed, by the platform number of control generator incision operation, electric energy feed-in electrical network that can be when hanging down wind speed, but its complex structure, cost is higher, control system is more complicated also.The generator power of direct driving wind generator system is big, and volume is also very big, and these generators generally can not make full use of generator volume inside structure, and space availability ratio is little.
The utility model content
The technical problems to be solved in the utility model just is: at the technical problem that prior art exists, the utility model provide a kind of simple and compact for structure, power density is big, applied widely, help the combined type wind power magneto alternator that wind energy is caught.
For solving the problems of the technologies described above, the solution that the utility model proposes is: a kind of combined type wind power magneto alternator, it comprises casing and is installed in casing interior rotor and stator, it is characterized in that: described stator comprises internal stator and external stator, internal stator and external stator are installed in the internal side diameter and the outside diameter of rotor respectively, air gap in forming between the internal side diameter of internal stator and rotor forms outer air gap between the outside diameter of external stator and rotor; Be equiped with internal stator armature winding and external stator armature winding on internal stator and the external stator respectively.
Described internal stator is fitted in the outside diameter of internal stator support, and external stator is fitted in the internal side diameter of casing, and rotor is supported by bearing, and Bearing Installation is on the internal stator support, and rotor is provided with rare-earth permanent magnet.
The front end of described casing is provided with the ring packing baffle plate, is provided with sealing ring between ring packing baffle plate and the rotor.
Described internal stator armature winding is 6 two mutually Y with external stator armature winding and moves 30 ° of windings, the two Y armature winding of external stator are in parallel again output behind the uncontrollable bridge rectifier of three-phase respectively, comes the electric current of two groups of rectifiers in the balance external stator armature winding by the first interphase reactor Lp1; The two Y armature winding of internal stator are in parallel again output behind the uncontrollable bridge rectifier of three-phase respectively, comes the electric current of two groups of rectifiers in the balance internal stator armature winding by the second interphase reactor Lp2; The output that is connected in parallel of the be connected in parallel output and the external stator armature winding of internal stator armature winding is again by the 3rd interphase reactor Lp3 output DC Ud that is connected in parallel, direct current Ud through inversion with boost after link to each other with electrical network.
Compared with prior art, advantage of the present utility model just is:
1, when low wind speed, the internal stator armature winding of generator generates electricity separately, can reduce the power loss of generator, helps the seizure of wind energy, and generator can export higher voltage, the electric energy feed-in electrical network during with low wind speed;
When 2, wind speed changed, generator output end voltage fluctuateed in relative little scope with frequency, and grid-connected converter is played a very good protection;
3, power of motor density is big, has made full use of space structure, compact conformation;
4, radiating condition is good, and generator has bigger surface, and stator can dispel the heat by outer surface well.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the schematic diagram of main magnetic circuit in the utility model;
Fig. 3 is a stator winding winding diagram in the utility model.
Marginal data
1, casing 2, external stator
3, internal stator 4, rotor
5, bearing 6, internal stator support
7, sealing baffle 8, external stator armature winding
9, outer air gap 11, rubber seal
12, rare-earth permanent magnet 13, internal stator armature winding
14, interior air gap
Embodiment
Below with reference to the drawings and specific embodiments the utility model is described further.
As depicted in figs. 1 and 2, the utility model combined type wind power magneto alternator, it comprises casing 1 and the rotor 4 and the stator that are installed in the casing 1, stator comprises internal stator 3 and external stator 2, internal stator 3 and external stator 2 are installed in the internal side diameter and the outside diameter of rotor 4 respectively, air gap 14 in forming between the internal side diameter of internal stator 3 and rotor 4, form outer air gap 9 between the outside diameter of external stator 2 and rotor 4, make the whole generating machine form two gap structures, be equiped with internal stator armature winding 13 and external stator armature winding 8 on internal stator 3 and the external stator 2 respectively.In the present embodiment, internal stator 3 is fitted in the outside diameter of internal stator support 6, and internal stator support 6 is fixed on the casing 1, external stator 2 is fitted in the internal side diameter of casing 1, and rotor 4 is by bearing 5 supportings, and bearing 5 is installed on the internal stator support 6, rotor 4 is provided with rare-earth permanent magnet 12, produces air-gap flux.The sheathed non magnetic collar of the outer surface of rotor 4 is used for preventing that centrifugal force from throwing away rare-earth permanent magnet 12.The front end of casing 1 is provided with ring packing baffle plate 7, is provided with sealing ring 11 between ring packing baffle plate 7 and the rotor 4, and sealing ring 11 adopts rubber seal, can play windproof, dustproof effect, prolongs the useful life of complete machine.Internal stator armature winding 13 is 6 two mutually Y with external stator armature winding 8 and moves 30 ° of windings, the two Y armature winding 8 of external stator are in parallel again output behind the uncontrollable bridge rectifier of three-phase respectively, comes the electric current of two groups of rectifiers in the balance external stator armature winding 8 by the first interphase reactor Lp1; The two Y armature winding 13 of internal stator are in parallel again output behind the uncontrollable bridge rectifier of three-phase respectively, comes the electric current of two groups of rectifiers in the balance internal stator armature winding 13 by the second interphase reactor Lp2; The output that is connected in parallel of the be connected in parallel output and the external stator armature winding 8 of internal stator armature winding 13 is again by the 3rd interphase reactor Lp3 output DC Ud that is connected in parallel, direct current Ud through inversion with boost after link to each other with electrical network.The external stator armature winding 8 of generator carries out energy converting between mechanical by the magnetic field of outer air gap 9, the output electric energy; Internal stator armature winding 13 carries out energy converting between mechanical by the magnetic field of interior air gap 14, the output electric energy; Air-gap field is produced by rare-earth permanent magnet 12, the main magnetic circuit of air-gap field as shown in Figure 2, main magnetic circuit forms a closed-loop path through the S utmost point of the iron core of the S utmost point one N utmost point of the iron core of the N utmost point of rotor rare-earth permanent magnet 12, outer air gap 9, external stator 2, outer air gap 9, adjacent rare-earth permanent magnet 12, interior air gap 14, internal stator 3, interior air gap 14, rare-earth permanent magnet 12.
The utility model combined type wind power magneto alternator has three kinds of different working forms, promptly may operate at three different states, and is specific as follows:
When (1) wind speed was low, the internal stator armature winding 13 of this generator was by magnetic field, the isolated operation generating of interior air gap 14, and external stator armature winding 8 outputs disconnect.The maximum voltage of internal stator armature winding 13 outputs is the motor rated voltage, and maximum power is 1/3 of a motor rated power.
When (2) wind speed was middling speed, the external stator armature winding 8 of this generator was by magnetic field, the isolated operation generating of outer air gap 9, and internal stator armature winding 13 outputs disconnect.The maximum voltage of external stator armature winding 8 outputs is the motor rated voltage, and maximum power is 2/3 of a motor rated power.
(3) wind speed reaches rated wind speed and when above, stator armature winding 13 and external stator armature winding 8 in this generator moves simultaneously, in parallel output, and the maximum voltage of output is the motor rated voltage, maximum power is a motor rated power.
The maximum output voltage of three operating states of the utility model combined type wind power magneto alternator equates that peak power output increases progressively for three grades.Like this, this generator also can be exported high voltage when lower-wattage is exported, and greatly reduces the fluctuation that transmission of electricity is pressed, and generator can move in wideer wind speed range, helps the seizure of wind energy, and motor is when low-power is exported, and power loss is little.During the specified operation of the utility model generator, 2/3 power division is on external stator 2, and external stator 2 is by the outer surface heat radiation of motor, and the heat dispersion of this motor is good.
Concrete operation principle: referring to shown in Figure 3, when wind speed is low, switches set Q2 closes a floodgate, switches set Q1 disconnects, 6 phase armature winding of generator internal stator 3 are by the magnetic field generation of interior air gap 14, this moment, motor speed was very low, and output voltage and power are also lower, along with wind speed increases, motor speed increases, output voltage raises, and when output voltage was higher than rated voltage, switches set Q1 closed a floodgate, switches set Q2 disconnects simultaneously, 6 phase windings of generator external stator 2 are by the magnetic field generation of outer air gap 9, and the generator electromagnetic torque increases, and output voltage descends; When wind speed continues to increase, the motor output voltage rises, when output voltage is higher than rated voltage, switches set Q2 closes a floodgate, maintained switch group Q1 closes a floodgate simultaneously, the external stator 6 phase armature winding of generator and internal stator 6 armature winding generating in parallel simultaneously mutually, the motor electromagnetic torque increases, and the motor output voltage is descended; When wind speed surpassed rated wind speed, the input power by the slurry distance of regulating wind energy conversion system is regulated wind energy conversion system kept the stable of generator output voltage.Further specify below by the operation principle of a model machine service data this generator:
Following table 1 is under different wind speed, and a rated power is the output power value of this generator of 1.5MW:
Table 1 rated power is the performance number of generator when different wind speed of 1.5MW
| Wind speed (m/s) | Output of a generator (KW) |
| 4.0 | 66.5 |
| 7.4 | 500.0 |
| 7.5 | 510.6 |
| 9.5 | 977.3 |
| 9.6 | 1000.0 |
| 13.0 | 1490.3 |
| 14.0 | 1499.2 |
| 15.0 | 1500.0 |
| 16.0 | 1500.0 |
Rated power is this combined type wind power magneto alternator of 1.5MW, and its external stator armature winding 8 rated power are 1MW, and internal stator armature winding 13 rated power are 0.5MW.When wind speed is lower than 7.4m/s in the table 1, internal stator armature winding 13 isolated operations generating; When wind speed is 7.4m/s～9.6m/s, external stator armature winding 8 isolated operations generating; Wind speed is during greater than 9.6m/s, external stator armature winding 8 and internal stator armature winding 13 parallel runnings generating; When wind speed surpasses rated wind speed 15m/s, by adjusting to wind energy conversion system slurry distance, the permanent power output of generator, power output is rated power 1.5MW.
Claims (5)
1, a kind of combined type wind power magneto alternator, it comprises casing (1) and is installed in casing (1) interior rotor (4) and stator, it is characterized in that: described stator comprises internal stator (3) and external stator (2), internal stator (3) and external stator (2) are installed in the internal side diameter and the outside diameter of rotor (4) respectively, air gap (14) in forming between the internal side diameter of internal stator (3) and rotor (4) forms outer air gap (9) between the outside diameter of external stator (2) and rotor (4); Be equiped with internal stator armature winding (13) and external stator armature winding (8) on internal stator (3) and the external stator (2) respectively.
2, combined type wind power magneto alternator according to claim 1, it is characterized in that: described internal stator (3) is fitted in the outside diameter of internal stator support (6), internal stator support (6) is fixed on the casing (1), external stator (2) is fitted in the internal side diameter of casing (1), rotor (4) is supported by bearing (5), bearing (5) is installed on the internal stator support (6), and rotor (4) is provided with rare-earth permanent magnet (12).
3, combined type wind power magneto alternator according to claim 1 and 2 is characterized in that: the front end of described casing (1) is provided with ring packing baffle plate (7), is provided with sealing ring (11) between ring packing baffle plate (7) and the rotor (4).
4, combined type wind power magneto alternator according to claim 1 and 2, it is characterized in that: described internal stator armature winding (13) is 6 two mutually Y with external stator armature winding (8) and moves 30 ° of windings, the two Y armature winding (8) of external stator are in parallel again output behind the uncontrollable bridge rectifier of three-phase respectively, comes the electric current of two groups of rectifiers in the balance external stator armature winding (8) by first interphase reactor (Lp1); The two Y armature winding (13) of internal stator are in parallel again output behind the uncontrollable bridge rectifier of three-phase respectively, comes the electric current of two groups of rectifiers in the balance internal stator armature winding (13) by second interphase reactor (Lp2); The output that is connected in parallel of the be connected in parallel output and the external stator armature winding (8) of internal stator armature winding (13) is again by the 3rd interphase reactor (Lp3) output DC (Ud) that is connected in parallel, direct current (Ud) through inversion with boost after link to each other with electrical network.
5, combined type wind power magneto alternator according to claim 3, it is characterized in that: described internal stator armature winding (13) is 6 two mutually Y with external stator armature winding (8) and moves 30 ° of windings, the two Y armature winding (8) of external stator are in parallel again output behind the uncontrollable bridge rectifier of three-phase respectively, comes the electric current of two groups of rectifiers in the balance external stator armature winding (8) by first interphase reactor (Lp1); The two Y armature winding (13) of internal stator are in parallel again output behind the uncontrollable bridge rectifier of three-phase respectively, comes the electric current of two groups of rectifiers in the balance internal stator armature winding (13) by second interphase reactor (Lp2); The output that is connected in parallel of the be connected in parallel output and the external stator armature winding (8) of internal stator armature winding (13) is again by the 3rd interphase reactor (Lp3) output DC (Ud) that is connected in parallel, direct current (Ud) through inversion with boost after link to each other with electrical network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620052228 CN200947563Y (en) | 2006-09-15 | 2006-09-15 | Composite wind permanent-magnet synchronous generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620052228 CN200947563Y (en) | 2006-09-15 | 2006-09-15 | Composite wind permanent-magnet synchronous generator |
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| Publication Number | Publication Date |
|---|---|
| CN200947563Y true CN200947563Y (en) | 2007-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620052228 Expired - Lifetime CN200947563Y (en) | 2006-09-15 | 2006-09-15 | Composite wind permanent-magnet synchronous generator |
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| Country | Link |
|---|---|
| CN (1) | CN200947563Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023245A (en) * | 2012-12-26 | 2013-04-03 | 国电联合动力技术有限公司 | Double-bearing support double-stator switch magnetic-resistance wind power generator and unit system thereof |
| CN103872868A (en) * | 2012-12-07 | 2014-06-18 | 株式会社电装 | Multi-gap type rotary electric machine |
| CN104795917A (en) * | 2015-03-17 | 2015-07-22 | 华中科技大学 | Multi-phase motor winding mechanism |
-
2006
- 2006-09-15 CN CN 200620052228 patent/CN200947563Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872868A (en) * | 2012-12-07 | 2014-06-18 | 株式会社电装 | Multi-gap type rotary electric machine |
| CN103872868B (en) * | 2012-12-07 | 2018-04-06 | 株式会社电装 | Multiple level formula electric rotating machine |
| CN103023245A (en) * | 2012-12-26 | 2013-04-03 | 国电联合动力技术有限公司 | Double-bearing support double-stator switch magnetic-resistance wind power generator and unit system thereof |
| CN104795917A (en) * | 2015-03-17 | 2015-07-22 | 华中科技大学 | Multi-phase motor winding mechanism |
| CN104795917B (en) * | 2015-03-17 | 2018-01-05 | 华中科技大学 | A kind of polyphase machine winding mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070912 |
|
| EXPY | Termination of patent right or utility model |