CN103138480B - Wind power generation plant - Google Patents
Wind power generation plant Download PDFInfo
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- CN103138480B CN103138480B CN201310061910.6A CN201310061910A CN103138480B CN 103138480 B CN103138480 B CN 103138480B CN 201310061910 A CN201310061910 A CN 201310061910A CN 103138480 B CN103138480 B CN 103138480B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
A kind of wind power generation plant, its wind energy conversion system (11) is connected with the planet carrier (202) of third planet gear (20), and rotor (62) three of the planet carrier (22) of first planet gear, the second planetary external toothing (33) and generator links together; The stator winding of described generator is directly connected with electrical network (12); The sun gear (201) of the rotor (42) of the first buncher (4), the sun gear (21) of first planet gear and third planet gear links together; Rotor (52), the second planetary sun gear (31) of the second buncher (5) link together; Mechanical brake (7) is had between the external toothing (203) of third planet gear and the casing of described wind power generation plant; Second planetary planet carrier (32) is connected with the external toothing (23) of first planet gear (2), has clutch (8) between the second planetary planet carrier (32) and the planet carrier (202) of third planet gear.
Description
The application is " wind power generation plant " (application number: 201110171837.9, applying date; On June 24th, 2011) divisional application.
Technical field
The present invention relates to wind power plant, particularly realize in wind generator system becoming the equipment that wind speed inputs permanent rate-adaptive pacemaker.
Background technology
Along with the whole society is to the concern of the energy and environmental problem, the development and utilization of regenerative resource is just presenting the trend of accelerated development, and wind energy extensively exists in the world and one of the regenerative resource of the technology grasped for people maturation the most.The wind generator system of current main flow is double feedback electric engine and straight drive system, the stator of doubly-fed generation system is directly connected with electrical network, speed governing is realized by regulating the slip power in rotor windings, therefore rotor windings needs a set of powerful inverter power supply, simultaneously epitrochanterian slip ring and brush reliability and the life-span not high, need periodic maintenance; Straight drive system eliminates the raising speed gear of wind energy conversion system to generator, but it is low directly to drive generator operation rotating speed, and generator needs to adopt larger rotor diameter and more number of pole-pairs, adds difficulty to the Design and manufacture of generator.Simultaneously because wind energy has randomness, suddenly big or suddenly small, when wind speed is less than rated wind speed, wind wheel can absorb wind energy to greatest extent, and when wind speed is higher than a certain limit value, in order to keep alternator output frequency constant, adopting and regulating fan blade pitch to make wind wheel stall, causing wind energy not to be fully utilized.In order to solve the problem, patent 200710019236.X, 200720033191.7,200810100747.9,200820116054.4 proposes the wind turbine generator of electric stepless speed change, is the mechanical energy of electric energy and permanent rate-adaptive pacemaker by double-mechanical-port motor by the wind energy transformation of velocity variations.But this electric machine structure is complicated, processing and manufacturing is difficult, also there is the maintenance issues of brush and slip ring simultaneously.Therefore efficient, reliable, to control simple variable speed constant frequency rate wind power generation plant be the long-term pursuits of these those skilled in the art, although patent 200910089259.7 achieves variable speed constant frequency, but when wind energy very large or very little time, the Capacity Ratio of buncher is comparatively large, causes system bulk, cost is difficult to decline.
Summary of the invention
The object of the invention is the shortcoming overcoming prior art, providing a kind of is the wind power generation plant that constant speed exports by the Conversion of Energy that speed change inputs.
Wind power generation plant of the present invention comprises active stepless speed-regulating device, wind energy conversion system and generator.
Active stepless speed-regulating device of the present invention at least comprises: first planet gear, the second planetary gear, the first buncher, the second buncher, the first power inverter, the second power inverter, a mechanical brake and a clutch, wherein planetary gear comprises planet carrier, external toothing and sun gear, buncher comprises stators and rotators two parts, and the transformation of electrical energy of electrical network is that the alternating current of variable voltage variable frequency is powered to buncher by power inverter.The planet carrier of first planet gear is rigidly connected by active stepless speed-regulating device one axle and the second planetary planet carrier, the rotor of the first buncher and the sun gear of first planet gear are rigidly connected, the rotor of the second buncher and the second planetary sun gear are rigidly connected, mechanical brake is had between the external toothing of first planet gear and casing, mechanical brake is closed can make external toothing maintain static, clutch is had between the external toothing of first planet gear and the second planetary sun gear, clutch closes and can make the external toothing of first planet gear and the second planetary sun gear synchronous rotary, second planetary external toothing is as two axles of active stepless speed-regulating device.The sun gear of first planet gear and the second planetary sun gear rotating speed is regulated by controlling buncher, when reaching active stepless speed-regulating device one axle rotation speed change, two axles of active stepless speed-regulating device remain on the rotating speed operation of setting, realize stepless shift function.
Meanwhile, when the rotating speed of active stepless speed-regulating device one axle is less than setting speed, mechanical brake closes, and clutch is opened, and active stepless speed-regulating device is operated in pattern one; When the rotating speed of active stepless speed-regulating device one axle is greater than setting speed, mechanical brake is opened, and clutch closes, and active stepless speed-regulating device is operated in pattern two; When the rotating speed of active stepless speed-regulating device one axle equals setting speed, carry out mechanical brake and clutch switch change, i.e. the switching of pattern one and pattern two; Can ensure that two axles of active stepless speed-regulating device are always operating at fixing rotating speed like this, ensure that buncher capacity is less simultaneously.
When pattern one is zero to the rotor speed that the switching of pattern two occurs in the second buncher, namely, when the rotating speed of active stepless speed-regulating device one axle is less than setting speed, mechanical brake closes, and clutch is opened, active stepless speed-regulating device is operated in pattern one, and the rotating speed of the second buncher is negative value; Along with the rotating speed of active stepless speed-regulating device one axle increases, when the rotating speed of active stepless speed-regulating device one axle equals setting speed, the rotating speed of the second buncher is reduced to zero gradually, and now closed clutch, opens mechanical brake; The rotating speed of active stepless speed-regulating device one axle continues to increase, and when the rotating speed of active stepless speed-regulating device one axle is greater than setting speed, active stepless speed-regulating device is operated in pattern two.
The present invention controls buncher rotating speed by continuous print, realizes stepless speed regulation, and to the input of this device or can export energy due to buncher, and therefore, system is active stepless speed-regulating device.
Wind power generation plant of the present invention comprises at least one wind energy conversion system, two planetary gears: first planet gear, the second planetary gear; Two bunchers: the first buncher, the second buncher; Two power inverters: the first power inverter, the second power inverter; A generator, a mechanical brake and a clutch.The planet carrier of first planet gear is rigidly connected by active stepless speed-regulating device one axle and the second planetary planet carrier and wind energy conversion system, the rotor of the first buncher and the sun gear of first planet gear are rigidly connected, the rotor of the second buncher and the second planetary sun gear are rigidly connected, mechanical brake is had between the external toothing of first planet gear and casing, mechanical brake closes and the external toothing of first planet gear can be made to maintain static, clutch is had between the external toothing of first planet gear and the second planetary sun gear, clutch closes and can make the external toothing of first planet gear and the second planetary sun gear synchronous rotary, the rotor of the second planetary external toothing and generator is rigidly connected, the stator winding of generator is directly connected with electrical network.First buncher is connected with electrical network by the first power inverter, and the second buncher is connected with electrical network by the second power inverter, and the transformation of electrical energy of electrical network is that the alternating current of variable voltage variable frequency is powered to buncher stator winding respectively by power inverter.
Power inverter is connected with also having holding wire between buncher simultaneously, can carry out communication.
Buncher and generator can be the motor of magneto, asynchronous machine or other types as required.
Wind power generation plant of the present invention, when the rotating speed of wind energy conversion system is less than setting speed, mechanical brake closes, and clutch is opened, and wind power generation plant is operated in pattern one; When the rotating speed of wind energy conversion system is greater than setting speed, mechanical brake is opened, and clutch closes, and wind power generation plant is operated in pattern two; When the rotating speed of wind energy conversion system equals setting speed, carry out mechanical brake and clutch switch change, i.e. the switching of pattern one and pattern two; As mentioned above, when the rotating speed of wind energy conversion system equals setting speed, the switch mode of wind power generation plant can be selected as required.Can ensure that generator is always operating at fixing rotating speed, ensures the stationarity of handoff procedure simultaneously like this.When pattern one is zero to the rotor speed that the switching of pattern two occurs in the second buncher, namely when the rotating speed of wind energy conversion system is less than setting speed, mechanical brake closes, and clutch is opened, and wind power generation plant is operated in pattern one, and the rotating speed of the second buncher is negative value; Along with the rotating speed of wind energy conversion system increases, when the rotating speed of wind energy conversion system equals setting speed, the rotating speed of the second buncher is reduced to zero gradually, and now closed clutch, opens mechanical brake; The rotating speed of wind energy conversion system continues to increase, and when the rotating speed of wind energy conversion system is greater than setting speed, wind power generation plant is operated in pattern two.
Device of the present invention is operated in pattern for the moment, part wind energy is delivered to by wind energy conversion system on the planet carrier of first planet gear, driving planet carrier rotates, because mechanical brake closes, therefore the external toothing of first planet gear maintains static, and the energy on planet carrier is all delivered to the sun gear of first planet gear, drives the first buncher generating, generate electricity and be converted to the phase place alternating current identical with voltage and electrical network, feedback grid by the first power inverter.Second buncher passes through the information such as the rotating speed of sensor measurement motor, the second power inverter is fed back to by holding wire, second power inverter provides the alternating current of different frequency and voltage to the stator winding of the second buncher according to the information of the second buncher setting speed and feedback rotating speed, control the second buncher to run according to setting speed, by adjusting the second buncher rotating speed, ensure the generator operation rotating speed of the invariablenes turning speed of the second planetary external toothing in setting.At this moment, another part wind energy of wind energy conversion system is delivered to planetary external toothing by the second planetary planet carrier, electric energy is converted into by generator, be input to electrical network, remainder energy is delivered to the second buncher by sun gear, and the alternating current being converted to phase place identical with voltage and electrical network by the second power inverter is input to electrical network.
When device of the present invention is operated in pattern two, part wind energy is delivered to by wind energy conversion system on the planet carrier of first planet gear, driving planet carrier rotates, because now clutch closes, therefore the external toothing of first planet gear and the second planetary sun gear synchronous rotary, an energy part on planet carrier is delivered to the sun gear of first planet gear, drive the first buncher generating, generate electricity and be converted to the phase place alternating current identical with voltage and electrical network, feedback grid by the first power inverter; Another part is delivered to the external toothing of first planet gear, drives the second buncher generating, generate electricity and be converted to the phase place alternating current identical with voltage and electrical network, feedback grid by the second power inverter.Second buncher passes through the information such as the rotating speed of sensor measurement motor, the second power inverter is fed back to by holding wire, second power inverter provides the alternating current of different frequency and voltage to the stator winding of the second buncher according to the information of the second buncher setting speed and feedback rotating speed, control the second buncher to run according to setting speed, by adjusting the second buncher rotating speed, ensure the generator operation rotating speed of the invariablenes turning speed of the second planetary external toothing in setting.At this moment, the remainder wind energy of wind energy conversion system is delivered to planetary external toothing by the second planetary planet carrier, electric energy is converted into by generator, be input to electrical network, remainder energy is delivered to the second buncher by sun gear, and the alternating current being converted to phase place identical with voltage and electrical network by the second power inverter is input to electrical network.
Simultaneously, wind energy conversion system can be connected by the planet carrier of change-speed gearing with first planet gear, first buncher can be undertaken being connected by change-speed gearing and the sun gear of first planet gear, the second buncher can be undertaken being connected by change-speed gearing and the second planetary sun gear, generator can be connected with the second planetary external toothing by change-speed gearing, to facilitate Machine Design and design of electrical motor, improve the rotating speed of motor simultaneously, reduce volume and cost.
The present invention can also have another kind of version: wind power generation plant of the present invention comprises at least one wind energy conversion system, three planetary gears: first planet gear, the second planetary gear, third planet gear; Two bunchers: the first buncher, the second buncher; Two power inverters: the first power inverter, the second power inverter; A generator, a mechanical brake and a clutch.The planet carrier of wind energy conversion system and third planet gear is rigidly connected, the planet carrier of first planet gear and the second planetary planet carrier are rigidly connected, the rotor of the first buncher, the sun gear of first planet gear and the sun gear of third planet gear are rigidly connected, the rotor of the second buncher, the external toothing of the second planetary sun gear and first planet gear is rigidly connected, mechanical brake is had between the external toothing of third planet gear and the casing of described wind power generation plant, mechanical brake closes and the external toothing of third planet gear can be made to maintain static, clutch is had between second planetary planet carrier and the planet carrier of third planet gear, clutch closes the planet carrier that can make first planet gear, second planetary planet carrier, the planet carrier synchronous rotary of third planet gear, the rotor of the second planetary external toothing and generator is rigidly connected, the stator winding of generator is directly connected with electrical network.First buncher is connected with electrical network by the first power inverter, and the second buncher is connected with electrical network by the second power inverter, and the transformation of electrical energy of electrical network is that the alternating current of variable voltage variable frequency is powered to buncher stator winding respectively by power inverter.
Power inverter is connected with also having holding wire between buncher simultaneously, can carry out communication.Buncher and generator can be the motor of magneto, asynchronous machine or other types as required.
Wind power generation plant of the present invention, when the rotating speed of wind energy conversion system is less than setting speed, mechanical brake closes, and clutch is opened, and wind power generation plant is operated in pattern one; When the rotating speed of wind energy conversion system is greater than setting speed, mechanical brake is opened, and clutch closes, and wind power generation plant is operated in pattern two; When the rotating speed of wind energy conversion system equals setting speed, now the rotor speed of the second buncher is zero, and mechanical brake closes, and clutch is opened, and pattern two switches to pattern one; When the rotating speed of wind energy conversion system equals setting speed, mechanical brake is opened, and clutch closes, and pattern one switches to pattern two; As mentioned above, when the rotating speed of wind energy conversion system equals setting speed, the switch mode of wind power generation plant can be selected as required.Can ensure that generator is always operating at fixing rotating speed, ensures the stationarity of handoff procedure simultaneously like this.When pattern one is zero to the rotor speed that the switching of pattern two occurs in the second buncher, namely when the rotating speed of wind energy conversion system is less than setting speed, mechanical brake closes, and clutch is opened, and wind power generation plant is operated in pattern one, and the rotating speed of the second buncher is negative value; Along with the rotating speed of wind energy conversion system increases, when the rotating speed of wind energy conversion system equals setting speed, the rotating speed of the second buncher is reduced to zero gradually, and now closed clutch, opens mechanical brake; The rotating speed of wind energy conversion system continues to increase, and when the rotating speed of wind energy conversion system is greater than setting speed, wind power generation plant is operated in pattern two.
The third version of the present invention is: wind power generation plant of the present invention comprises at least one wind energy conversion system, three planetary gears: first planet gear, the second planetary gear, third planet gear; Two bunchers: the first buncher, the second buncher; Two power inverters: the first power inverter, the second power inverter; A generator, a mechanical brake and a clutch.The planet carrier of wind energy conversion system and third planet gear is rigidly connected, and the planet carrier of first planet gear and the rotor of generator are rigidly connected, and the stator winding of generator is directly connected with electrical network.The rotor of the first buncher, the sun gear of first planet gear, second planetary sun gear, the sun gear of third planet gear is rigidly connected, the rotor of the second buncher and the second planetary external toothing are rigidly connected, mechanical brake is had between the external toothing of third planet gear and the casing of described wind power generation plant, mechanical brake closes and the external toothing of third planet gear can be made to maintain static, linking together of the external toothing rigidity of the second planetary planet carrier and first planet gear, clutch is had between second planetary planet carrier and the planet carrier of third planet gear, clutch is closed can make the second planetary planet carrier, the planet carrier of third planet gear and wind energy conversion system synchronous rotary.First buncher is connected with electrical network by the first power inverter, and the second buncher is connected with electrical network by the second power inverter, and the transformation of electrical energy of electrical network is that the alternating current of variable voltage variable frequency is powered to buncher stator winding respectively by power inverter.
Power inverter is connected with also having holding wire between buncher simultaneously, can carry out communication.Buncher and generator can be the motor of magneto, asynchronous machine or other types as required.
Wind power generation plant of the present invention, when the rotating speed of wind energy conversion system is less than setting speed, mechanical brake closes, and clutch is opened, and wind power generation plant is operated in pattern one; When the rotating speed of wind energy conversion system is greater than setting speed, mechanical brake is opened, and clutch closes, and wind power generation plant is operated in pattern two; When the rotating speed of wind energy conversion system equals setting speed, now the rotor speed of the second buncher is zero, and mechanical brake closes, and clutch is opened, and pattern two switches to pattern one; When the rotating speed of wind energy conversion system equals setting speed, mechanical brake is opened, and clutch closes, and pattern one switches to pattern two; As mentioned above, when the rotating speed of wind energy conversion system equals setting speed, the switch mode of wind power generation plant can be selected as required.Can ensure that generator is always operating at fixing rotating speed, ensures the stationarity of handoff procedure simultaneously like this.When pattern one is zero to the rotor speed that the switching of pattern two occurs in the second buncher, namely when the rotating speed of wind energy conversion system is less than setting speed, mechanical brake closes, and clutch is opened, and wind power generation plant is operated in pattern one, and the rotating speed of the second buncher is negative value; Along with the rotating speed of wind energy conversion system increases, when the rotating speed of wind energy conversion system equals setting speed, the rotating speed of the second buncher is reduced to zero gradually, and now closed clutch, opens mechanical brake; The rotating speed of wind energy conversion system continues to increase, and when the rotating speed of wind energy conversion system is greater than setting speed, wind power generation plant is operated in pattern two.
4th kind of version of the present invention is: wind power generation plant of the present invention comprises at least one wind energy conversion system, three planetary gears: first planet gear, the second planetary gear, third planet gear; Two bunchers: the first buncher, the second buncher; Two power inverters: the first power inverter, the second power inverter; A generator, a mechanical brake and a clutch.The planet carrier of wind energy conversion system and third planet gear is rigidly connected, and the planet carrier of first planet gear, the second planetary external toothing and generator amature are rigidly connected, and the stator winding of generator is directly connected with electrical network.The rotor of the first buncher, the sun gear of first planet gear and the sun gear of third planet gear are rigidly connected, the rotor of the second buncher, second planetary sun gear is rigidly connected, mechanical brake is had between the external toothing of third planet gear and the casing of described wind power generation plant, mechanical brake closes and the external toothing of third planet gear can be made to maintain static, the external toothing of the second planetary planet carrier and first planet gear is rigidly connected, clutch is had between second planetary planet carrier and the planet carrier of third planet gear, clutch closes the external toothing that can make first planet gear, second planetary planet carrier, the planet carrier synchronous rotary of third planet gear.First buncher is connected with electrical network by the first power inverter, and the second buncher is connected with electrical network by the second power inverter, and the transformation of electrical energy of electrical network is that the alternating current of variable voltage variable frequency is powered to buncher stator winding respectively by power inverter.
Power inverter is connected with also having holding wire between buncher simultaneously, can carry out communication.Buncher and generator can be the motor of magneto, asynchronous machine or other types as required.
Wind power generation plant of the present invention, when the rotating speed of wind energy conversion system is less than setting speed, mechanical brake closes, and clutch is opened, and wind power generation plant is operated in pattern one; When the rotating speed of wind energy conversion system is greater than setting speed, mechanical brake is opened, and clutch closes, and wind power generation plant is operated in pattern two; When the rotating speed of wind energy conversion system equals setting speed, now the rotor speed of the second buncher is zero, and mechanical brake closes, and clutch is opened, and pattern two switches to pattern one; When the rotating speed of wind energy conversion system equals setting speed, mechanical brake is opened, and clutch closes, and pattern one switches to pattern two; As mentioned above, when the rotating speed of wind energy conversion system equals setting speed, the switch mode of wind power generation plant can be selected as required.Can ensure that generator is always operating at fixing rotating speed, ensures the stationarity of handoff procedure simultaneously like this.When pattern one is zero to the rotor speed that the switching of pattern two occurs in the second buncher, namely when the rotating speed of wind energy conversion system is less than setting speed, mechanical brake closes, and clutch is opened, and wind power generation plant is operated in pattern one, and the rotating speed of the second buncher is negative value; Along with the rotating speed of wind energy conversion system increases, when the rotating speed of wind energy conversion system equals setting speed, the rotating speed of the second buncher is reduced to zero gradually, and now closed clutch, opens mechanical brake; The rotating speed of wind energy conversion system continues to increase, and when the rotating speed of wind energy conversion system is greater than setting speed, wind power generation plant is operated in pattern two.
Above-mentioned wind power generation plant of the present invention has improvement project one, scheme two and scheme three can adopt gear graduation when wind energy conversion system, the first buncher, the second buncher are connected with this device with generator equally, improve, make that the volume of wind power generation plant is less, cost is lower.
Device of the present invention mainly two patterns are provided above-mentioned, on the basis of above-mentioned two mode devices, by combination, can the integrated scheme such as planet three-mode, four-mode and multi-mode, describe no longer one by one here.
Beneficial effect of the present invention:
1, compared with traditional double feedback electric engine system, this invention simplifies the structure of wind turbine generator, eliminate brush and slip-ring device, improve reliability and maintainability.
2, generator can be made at fixing rotary speed working by the control of buncher, realize variable speed constant frequency and run, the mature technology of constant frequency generation can be made full use of.
3, with directly drive compared with generator system, in apparatus of the present invention, electric energy is produced by conventional generator, is directly inputted to electrical network, and without power electronic equipment, the quality of power supply is good.
4, can be used as starting motor, wind wheel is started and brakes.
5, the capacity of buncher is efficiently reduced.
6, planetary gear has raising speed effect, rotating speed can be promoted, and reduces torque, thus reduces the volume of generator.
Accompanying drawing explanation
Fig. 1 is the structural representation of the wind power generation plant according to the first exemplary embodiment of the present invention; In figure: active stepless speed-regulating device one axle 1, active stepless speed-regulating device two axle 100, first planet gear 2, second planetary gear 3, first buncher 4, second buncher 5, first power inverter 9, second power inverter 10, mechanical brake 7, clutch 8, electrical network 12; The planet carrier 22 of first planet gear, external toothing 23, sun gear 21; Second planetary planet carrier 32, external toothing 33, sun gear 31; The rotor 42 of the first buncher, stator 41; The rotor 52 of the second buncher, stator 51;
The structural representation of the active stepless speed-regulating device in Fig. 2 first embodiment of the invention; In figure: wind energy conversion system 11, generator 6, the rotor 62 of generator, stator 61;
Fig. 3 is the structural representation of the wind power generation plant of the band gear graduation of modification on basis according to a first embodiment of the present invention; In figure: first stud gear 13, second stud gear 14, the 3rd change-speed gearing 15 and the 4th change-speed gearing 16;
The structural representation of the wind power generation plant of Fig. 4 second embodiment of the invention; In figure: third planet gear 20, wherein sun gear 201, planet carrier 202, external toothing 203;
The structural representation of the wind power generation plant of Fig. 5 third embodiment of the invention;
The structural representation of the wind power generation plant of Fig. 6 fourth embodiment of the invention.
Embodiment
Wind power generation plant of the present invention comprises active stepless speed-regulating device, wind energy conversion system and generator.Below, the wind power generation plant according to the embodiment of the present invention is described by reference to the accompanying drawings in detail.
Fig. 1 is the structural representation of the wind power generation plant of first embodiment of the invention.Fig. 2 is the structural representation of the active stepless speed-regulating device in the wind power generation plant of first embodiment of the invention.
As shown in Figure 1, wind power generation plant comprises active stepless speed-regulating device 1000, wind energy conversion system 11 and generator 6.Wind energy conversion system 11 is connected to an axle 1 of active stepless speed-regulating device 1000, and generator 6 is connected to two axles 100 of active stepless speed-regulating device 1000.Wind energy conversion system 11 rotates under wind-force effect, and Wind resource change is become mechanical energy, and be delivered to active stepless speed-regulating device 1000, active stepless speed-regulating device 1000 is translated into the mechanical energy of constant speed, is delivered to generator 6, generator 6 by back electrical energy to electrical network 12.
As depicted in figs. 1 and 2, active stepless speed-regulating device 1000 comprises two planetary gears: first planet gear 2 and the second planetary gear 3; Two bunchers: the first buncher 4 and the second buncher 5; Two power inverters: the first power inverter 9 and the second power inverter 10; A mechanical brake 7 and a clutch 8.The planet carrier 22 of first planet gear 2 is rigidly connected by the planet carrier 32 of active stepless speed-regulating device one axle 1 and the second planetary gear 3, the rotor 42 of the first buncher 4 is rigidly connected with the sun gear 21 of first planet gear 2, the rotor 52 of the second buncher 5 and the sun gear 31 of the second planetary gear 3 are rigidly connected, mechanical brake 7 is had between the external toothing 23 of first planet gear 2 and the casing of described wind power generation plant, mechanical brake 7 is closed can make the external toothing 23 of first planet gear 2 maintain static, clutch 8 is had between the external toothing 23 of first planet gear 2 and the sun gear 31 of the second planetary gear 3, clutch 8 is closed can make the external toothing 23 of first planet gear 2 and sun gear 31 synchronous rotary of the second planetary gear 3, the external toothing 33 of the second planetary gear 3 is rigidly connected with two axles 100 of active stepless speed-regulating device.First buncher 4 is connected with electrical network 12 or other power supplys by the first power inverter 9, and the second buncher 5 is connected with electrical network 12 or other power supplys by the second power inverter 10.
Following relation is existed for planetary gear:
ω
s＝(1+ρ)×ω
c-ω
r/ρ
ω
c＝ρ×ω
s/(1+ρ)+ω
r/(1+ρ)
ω
r＝(1+ρ)×ω
c-ρ×ω
s
T
s＝ρ×T
c/(1+ρ)＝ρ×T
r（1）
T
r＝T
c/(1+ρ)
ρ=sun gear the number of teeth/gear ring number of teeth
In formula, ω
sit is the rotating speed of sun gear; T
sit is the torque of sun gear;
ω
rit is the rotating speed of gear ring; T
rit is the torque of external toothing;
ω
cit is the rotating speed of planet carrier; T
cit is the torque of planet carrier;
As can be seen from above formula (1), planetary sun gear, rotating speed between planet carrier and external toothing three have strict relation, this relation is relevant to the ratio ρ of the sun gear number of teeth and the external toothing number of teeth, when ρ determines, the external toothing of active stepless speed-regulating device, sun gear, planet carrier three parts have 2 mechanical rotary freedoms, namely, after in the external toothing of active stepless speed-regulating device, sun gear, planet carrier, the rotary speed of any 2 parts is determined, the speed of the 3rd parts is uniquely determined.
In the active stepless speed-regulating device of the present invention, there are two groups of planetary gears, first planet gear 2 and the second planetary gear 3, all there is above-mentioned relation, and the planet carrier 32 of the planet carrier 22 of first planet gear 2 and the second planetary gear 3 is rigidly connected, when mechanical brake 7 closes, clutch 8 is opened, this operating state is pattern one, now has following relation:
In formula,
ω
m1it is the rotating speed of the first buncher 4;
ω
m2it is the rotating speed of the second buncher 5;
ω
1it is the rotating speed of active stepless speed change device one axle 1;
ω
100it is the rotating speed of active stepless speed change device two axle 100;
ρ
1the sun gear number of teeth and the external toothing number of teeth ratio of first planet gear;
ρ
2the second planetary sun gear number of teeth and external toothing number of teeth ratio.
Can find out according to formula (2), the rotational speed omega of active stepless speed change device one axle 1
1when changing, by adjusting the rotational speed omega of the second buncher 5
m2the rotational speed omega of active stepless speed change device two axle 100 can be ensured
100remain unchanged, realize stepless speed regulation.But, in such a mode, when the rotational speed omega of active stepless speed change device one axle 1
1time very high, adjust the rotational speed omega of the second buncher 5
m2can be very high, cause the capacity of adjustment second buncher 5 and the second power inverter 10 comparatively large, cause that system bulk is large, cost is high.Therefore, set model speed-changing ω
12, when the rotational speed omega of active stepless speed change device one axle 1
1< ω
12time, active stepless speed change device adopts above-mentioned mode of operation one, and works as the rotational speed omega of active stepless speed change device one axle 1
1> ω
12time, mechanical brake 7 is opened, and clutch 8 closes, and this operating state is called pattern two, now has following relation:
Can see, the first buncher 4 take part in speed governing work, has shared a part of power stage, reduces the capacity of the second buncher 5 and the second power inverter 10.
Therefore, wind power generation plant of the present invention by the speed of adjustment second buncher 5, can control the ratio of active stepless speed change device one axle 1 and active stepless speed change device two axle 100, and this ratio can change by continuous print, namely realizes stepless speed regulation.On the other hand, adopt two kinds of mode of operations according to the difference of operating mode, effectively reduce the capacity of buncher.
As shown in Figure 1, described wind power generation plant comprises an above-mentioned active stepless speed-regulating device, wherein, wind energy conversion system 11 and active stepless speed-regulating device one axle 1 are rigidly connected, rotor 62 and active stepless speed-regulating device two axle 100 of generator 6 are rigidly connected, and stator 61 winding of generator 6 is directly connected with electrical network 12.
In work, when the rotating speed of wind energy conversion system 11 is less than setting speed, mechanical brake 7 closes, and clutch 8 is opened, and wind power generation plant of the present invention is operated in pattern one; When the rotating speed of wind energy conversion system 11 is greater than setting speed, mechanical brake 7 is opened, and clutch 8 closes, and described wind power generation plant is operated in pattern two; Can ensure that generator 6 is always operating at constant rotating speed, ensures the stationarity of handoff procedure simultaneously like this.
When pattern one is zero to rotor 52 rotating speed that the switching of pattern two occurs in the second buncher 5, namely when the rotating speed of wind energy conversion system is less than setting speed, mechanical brake closed 7, clutch 8 is opened, wind power generation plant is operated in pattern one, and the rotating speed of the second buncher 5 is negative value; Along with the rotating speed of wind energy conversion system 11 increases, when the rotating speed of wind energy conversion system 11 equals setting speed, the rotating speed of the second buncher 5 is reduced to zero gradually, and now closed clutch 8, opens mechanical brake 7; The rotating speed of wind energy conversion system 11 continues to increase, and when the rotating speed of wind energy conversion system 11 is greater than setting speed, described wind power generation plant is operated in pattern two.In like manner can carry out the switching of pattern two to pattern one.
In Fig. 1, wind power generation plant of the present invention is operated in pattern for the moment, part wind energy is delivered on the planet carrier 22 of first planet gear 2 by wind energy conversion system 11, planet carrier 22 is driven to rotate, because mechanical brake 7 closes, therefore the external toothing 23 of first planet gear 2 maintains static, energy on planet carrier 22 is all delivered to the sun gear 21 of first planet gear 2, the first buncher 4 is driven to generate electricity, generate electricity and be converted to the phase place alternating current identical with electrical network 12 with voltage by the first power inverter 9, feed back to electrical network 12.Second buncher 5 is by information such as sensor measurement motor 5 rotating speeds, the second power inverter 10 is fed back to by holding wire, second power inverter 10 provides the alternating current of different frequency and voltage to stator 51 winding of the second buncher 5 according to the information of the second buncher 5 setting speed and feedback rotating speed, control the second buncher 5 to run according to setting speed, by adjusting the rotating speed of the second buncher 5, ensure generator 6 working speed of the invariablenes turning speed of the external toothing 33 of the second planetary gear 3 in setting.At this moment, another part wind energy of wind energy conversion system 11 is delivered to the external toothing 33 of planetary gear 3 by the planet carrier 32 of the second planetary gear 3, electric energy is converted into by generator 6, be input to electrical network 12, remainder energy is delivered to the second buncher 5 by sun gear 31, and the alternating current being converted to phase place identical with electrical network 12 with voltage by the second power inverter 10 is input to electrical network 12.
When wind power generation plant of the present invention is operated in pattern two, part wind energy is delivered on the planet carrier 22 of first planet gear 2 by wind energy conversion system 11, planet carrier 22 is driven to rotate, because now clutch 8 closes, therefore the external toothing 23 of first planet gear 2 and sun gear 31 synchronous rotary of the second planetary gear 3, an energy part on planet carrier 22 is delivered to the sun gear 21 of first planet gear 2, the first buncher 4 is driven to generate electricity, generate electricity and be converted to the phase place alternating current identical with electrical network 12 with voltage by the first power inverter 9, feed back to electrical network 12; Another part is delivered to the external toothing 23 of first planet gear 2, drives the second buncher 5 to generate electricity, generate electricity and be converted to the phase place alternating current identical with electrical network 12 with voltage by the second power inverter 10, feed back to electrical network 12.Second buncher 5 passes through the information such as the rotating speed of sensor measurement motor 5, the second power inverter 10 is fed back to by holding wire, second power inverter 10 provides the alternating current of different frequency and voltage to stator 51 winding of the second buncher 5 according to the information of the second buncher 5 setting speed and feedback rotating speed, control the second buncher 5 to run according to setting speed, by adjusting the second buncher 5 rotating speed, ensure generator 6 working speed of the invariablenes turning speed of the external toothing 33 of the second planetary gear 3 in setting.At this moment, the remainder wind energy of wind energy conversion system 11 is delivered to the external toothing 33 of planetary gear 3 by the planet carrier 32 of the second planetary gear 3, electric energy is converted into by generator 6, be input to electrical network 12, remainder energy is delivered to the second buncher 5 by sun gear 31, and the alternating current being converted to phase place identical with electrical network 12 with voltage by the second power inverter 10 is input to electrical network 12.
Fig. 3 is the modified example after the wind power generation plant increase gear graduation in Fig. 1.As shown in Figure 3, wind energy conversion system 11 is connected with the planet carrier 22 of first planet gear 2 by change-speed gearing 13, first buncher 4 is undertaken being connected by change-speed gearing 14 and the sun gear 21 of first planet gear 2, the second buncher 5 is undertaken being connected by change-speed gearing 15 and the sun gear 31 of the second planetary gear 3, generator 6 is connected by the external toothing 33 of change-speed gearing 16 with the second planetary gear 3, to facilitate Machine Design and design of electrical motor, improve the rotating speed of motor simultaneously, reduce volume and cost.
Fig. 4 is the structural representation of the wind power generation plant of second embodiment of the invention.As shown in the figure, the wind power generation plant of second embodiment of the invention comprises at least one wind energy conversion system 11, three planetary gears: first planet gear 2, second planetary gear 3 and third planet gear 20, two bunchers: the first buncher 4 and the second buncher 5, two power inverters: the first power inverter 9 and the second power inverter 10, generator 6, mechanical brake 7 and a clutch 8.Wind energy conversion system 11 is rigidly connected with the planet carrier 202 of third planet gear 20, the planet carrier 22 of first planet gear 2 and the planet carrier 32 of the second planetary gear 3 are rigidly connected, the rotor 42 of the first buncher 4, the sun gear 21 of first planet gear 2 and the sun gear 201 of third planet gear 20 are rigidly connected, the rotor 52 of the second buncher 5, the sun gear 31 of the second planetary gear 3 and the external toothing 23 of first planet gear 2 are rigidly connected, mechanical brake 7 is had between the external toothing 203 of third planet gear 20 and the casing of described wind power generation plant, mechanical brake 7 is closed can make the external toothing 203 of third planet gear 20 maintain static, clutch 8 is had between the planet carrier 32 of the second planetary gear 3 and the planet carrier 202 of third planet gear 20, the closed planet carrier 22 that can make first planet gear 2 of clutch 8, the planet carrier 32 of the second planetary gear 3, planet carrier 202 synchronous rotary of third planet gear 20, the external toothing 33 of the second planetary gear 3 is rigidly connected with the rotor 62 of generator 6, stator 61 winding of generator 6 is directly connected with electrical network 12.First buncher 4 is connected with electrical network 12 by the first power inverter 9, second buncher 5 is connected with electrical network 12 by the second power inverter 10, the transformation of electrical energy of electrical network is that the alternating current of variable voltage variable frequency is powered to the stator winding of the first buncher 4 and the second buncher 5 respectively by the first power inverter 9 and the second power inverter 10, first power inverter 9 and the second power inverter 10 are connected with also having holding wire between the first buncher 4 and the second buncher 5 respectively simultaneously, can carry out communication.First buncher 4 and the second buncher 5 and generator 6 can be the motor of magneto, asynchronous machine or other types as required.
When the rotating speed of wind energy conversion system 11 is less than setting speed, mechanical brake 7 closes, and clutch 8 is opened, and wind power generation plant is operated in pattern one; When the rotating speed of wind energy conversion system 11 is greater than setting speed, mechanical brake 7 is opened, and clutch 8 closes, and described wind power generation plant is operated in pattern two; Can ensure that generator 6 is always operating at fixing rotating speed like this.Be zero at rotor 52 rotating speed of the second buncher 5, namely carry out the switching between pattern one and pattern two when the rotating speed of wind energy conversion system 11 equals setting speed.
Similar with the first embodiment, also change-speed gearing can be increased, namely, wind energy conversion system 11 can be connected with the planet carrier 202 of third planet gear 20 by change-speed gearing, first buncher 4 can be connected with the sun gear 21 of first planet gear 2 by change-speed gearing, second buncher 5 can be connected by the sun gear 31 of change-speed gearing with the second planetary gear 3, generator 6 can be connected by the external toothing 33 of change-speed gearing with the second planetary gear 3, to facilitate Machine Design and design of electrical motor, improve the rotating speed of motor simultaneously, reduce volume and cost.
Fig. 5 is the structural representation of the wind power generation plant according to the third exemplary embodiment of the present invention.As shown in Figure 5, the wind power generation plant of third embodiment of the invention comprises at least one wind energy conversion system 11, three planetary gears: first planet gear 2, second planetary gear 3 and third planet gear 20, two bunchers: the first buncher 4 and the second buncher 5, two power inverters: the first power inverter 9 and the second power inverter 10, generator 6, mechanical brake 7 and a clutch 8.Wind energy conversion system 11 is rigidly connected with the planet carrier 202 of third planet gear 20, and the planet carrier 22 of first planet gear 2 and the rotor 62 of generator 6 are rigidly connected, and stator 61 winding of generator 6 is directly connected with electrical network 12.The rotor 42 of the first buncher 4, the sun gear 21 of first planet gear 2, the sun gear 31 of the second planetary gear 3, the sun gear 201 of third planet gear 20 is rigidly connected, the rotor 52 of the second buncher 5 and the external toothing 33 of the second planetary gear 3 are rigidly connected, mechanical brake 7 is had between the external toothing 203 of third planet gear 20 and the casing of described wind power generation plant, mechanical brake 7 is closed can make the external toothing 203 of third planet gear 20 maintain static, the planet carrier (32) of the second planetary gear 3 links together with external toothing 23 rigidity of first planet gear 2, clutch 8 is had between the planet carrier 32 of the second planetary gear 3 and the planet carrier 202 of third planet gear 20, the closed planet carrier 32 that can make the second planetary gear 3 of clutch 8, the planet carrier 202 of third planet gear 20 and wind energy conversion system 11 synchronous rotary.First buncher 4 is connected with electrical network 12 by the first power inverter 9, second buncher 5 is connected with electrical network 12 by the second power inverter 10, the transformation of electrical energy of electrical network is that the alternating current of variable voltage variable frequency is powered to the stator winding of the first buncher 4 and the second buncher 5 respectively by the first power inverter 9 and the second power inverter 10, first power inverter 9 and the second power inverter 10 are connected with also having holding wire between the first buncher 4 and the second buncher 5 respectively simultaneously, can carry out communication.First buncher 4 and the second buncher 5 and generator 6 can be the motor of magneto, asynchronous machine or other types as required.
The wind power generation plant of the third exemplary embodiment of the present invention, when the rotating speed of wind energy conversion system 11 is less than setting speed, mechanical brake 7 closes, and clutch 8 is opened, and wind power generation plant is operated in pattern one; When the rotating speed of wind energy conversion system 11 is greater than setting speed, mechanical brake 7 is opened, and clutch 8 closes, and wind power generation plant is operated in pattern two; Can ensure that generator 6 is always operating at fixing rotating speed like this.Be zero at rotor 52 rotating speed of the second buncher 5, carry out the switching between pattern one and pattern two when the rotating speed of wind energy conversion system 11 equals setting speed.
Similar with the first embodiment, also change-speed gearing can be increased, namely, wind energy conversion system 11 can be connected with the planet carrier 202 of third planet gear 20 by change-speed gearing, first buncher 4 can be connected with the sun gear 21 of first planet gear 2 by change-speed gearing, second buncher 5 can be connected by the external toothing 33 of change-speed gearing with the second planetary gear 3, generator 6 can be connected with the planet carrier 22 of first planet gear 2 by change-speed gearing, to facilitate Machine Design and design of electrical motor, improve the rotating speed of motor simultaneously, reduce volume and cost.
Fig. 6 is the structural representation of the wind power generation plant of the fourth exemplary embodiment of the present invention.As shown in Figure 6, the wind power generation plant of fourth embodiment of the invention comprises at least one wind energy conversion system 11, three planetary gears: first planet gear 2, second planetary gear 3, with third planet gear 20, two bunchers: the first buncher 4 and the second buncher 5, two power inverters: the first power inverter 9 and the second power inverter 10, a generator 6, mechanical brake 7 and a clutch 8.Wind energy conversion system 11 is rigidly connected with the planet carrier 202 of third planet gear 20, and external toothing 33 and generator 6 rotor 62 of planet carrier 22, second planetary gear 3 of first planet gear 2 are rigidly connected, and stator 61 winding of generator 6 is directly connected with electrical network 12.The rotor 42 of the first buncher 4, the sun gear 21 of first planet gear 2 and the sun gear 201 of third planet gear 20 are rigidly connected, the rotor 52 of the second buncher 5, the sun gear 31 of the second planetary gear 3 is rigidly connected, mechanical brake 7 is had between the external toothing 203 of third planet gear 20 and the casing of described wind power generation plant, mechanical brake 7 is closed can make the external toothing 203 of third planet gear 20 maintain static, the planet carrier 32 of the second planetary gear 3 and the external toothing 23 of first planet gear 2 are rigidly connected, clutch 8 is had between the planet carrier 32 of the second planetary gear 3 and the planet carrier 202 of third planet gear 20, the closed external toothing 23 that can make first planet gear 2 of clutch 8, the planet carrier 32 of the second planetary gear 3, planet carrier 202 synchronous rotary of third planet gear 20.First buncher 4 is connected with electrical network 12 by the first power inverter 9, second buncher 5 is connected with electrical network 12 by the second power inverter 10, the transformation of electrical energy of electrical network is that the alternating current of variable voltage variable frequency is powered to the stator winding of the first buncher 4 and the second buncher 5 respectively by the first power inverter 9 and the second power inverter 10, first power inverter 9 and the second power inverter 10 are connected with also having holding wire between the first buncher 4 and the second buncher 5 respectively simultaneously, can carry out communication.First buncher 4 and the second buncher 5 and generator 6 can be the motor of magneto, asynchronous machine or other types as required.
Wind power generation plant described according to a fourth embodiment of the present invention, when the rotating speed of wind energy conversion system 11 is less than setting speed, mechanical brake 7 closes, and clutch 8 is opened, and wind power generation plant is operated in pattern one; When the rotating speed of wind energy conversion system 11 is greater than setting speed, mechanical brake 7 is opened, and clutch 8 closes, and wind power generation plant is operated in pattern two; Can ensure that generator 6 is always operating at fixing rotating speed like this.Be zero at rotor 52 rotating speed of the second buncher 5, carry out the switching between pattern one and pattern two when the rotating speed of wind energy conversion system 11 equals setting speed.
Similar with the first embodiment, also change-speed gearing can be increased, namely, wind energy conversion system 11 can be connected with the planet carrier 202 of third planet gear 20 by change-speed gearing, first buncher 4 can be connected with the sun gear 21 of first planet gear 2 by change-speed gearing, second buncher 5 can be connected by the sun gear 31 of change-speed gearing with the second planetary gear 3, generator 6 can be connected by the external toothing 33 of change-speed gearing with the second planetary gear 3, to facilitate Machine Design and design of electrical motor, improve the rotating speed of motor simultaneously, reduce volume and cost.
Provide device of the present invention mainly two patterns above-mentioned, on the basis of above-mentioned two mode devices, by combination, the scheme that three-mode, four-mode and multi-mode etc. are integrated can be formed, describe no longer one by one here.
In the prior art of wind power generation, direct driving motor is a kind of motor of variable working condition, different working points is operated according to varying in size of wind speed, generator operating mode is complicated, be difficult to ensure there is higher efficiency under all operating modes, the wind energy conversion system of variable working condition is exported by the stepless speed-regulating device of planetary gear and buncher composition the mechanical energy becoming a constant rotational speed and export by the present invention, existing permanent operating mode generator techniques can be utilized, as heat generating and hydraulic generator technology, not only technology maturation, and generator operating mode is simple, working point is single, thus make electricity generation system have very high efficiency.Directly drive in electricity generation system simultaneously, the power inverter that all electric energy all pass through directly to drive generator outputs to electrical network, not only can make the Quality Down of electric energy, and directly drive electricity generation system and need one and generator capacity equal-wattage converter, not only increase system cost, reduce system reliability, and cause power inverter loss, reduce further the efficiency of system.Most of energy of the present invention directly feeds back to electrical network by the winding of generator, the intermediate link of obstructed overpower converter, the quality of power supply is high, harmonic wave is few, and decrease loss, improve efficiency, power inverter of the present invention is only power to buncher, current capacity is less, saves cost.Wind generator system of the present invention eliminates brush simultaneously, compares double feedback electric engine system and has higher reliability, decrease maintenance.And device of the present invention is by the infinitely variable speeds of two patterns, significantly reduces the capacity of buncher, expands the range of speeds of wind energy conversion system, be more applicable to jumbo wind power generation occasion.
The present invention is simultaneously designed by the speed governing of planetary gear and change-speed gearing, be high rotating speed by slow-revving for large torque changes mechanical energy, the mechanical energy of low torque exports, buncher can be made to be the motor of a high speed low torque, volume is little, cost-saving, power demand converter is also smaller simultaneously, and namely the changes mechanical energy of powerful velocity variations is the mechanical energy of a permanent rotating speed by employing two low power bunchers.Generator also can be the motor of a high speed low torque constant operation frequency simultaneously, has volume equally little, cost-saving advantage.
Device of the present invention only needs two to three planetary gears, two bunchers, two power inverters and mechanical brake, a clutch engagement, the on off state of the adjustment rotating speed of buncher and clutch, mechanical brake, can keep the mechanical energy of constant frequency to export.When wind energy conversion system transfers energy to speed regulating device of the present invention, the electric energy exporting a constant frequency sends into electrical network, and system Main Function is that the speed of change is become constant speed, plays speed governing effect.
Claims (2)
1. a wind power generation plant, comprises wind energy conversion system (11), generator (6) and active stepless speed-regulating device (1000), described active stepless speed-regulating device comprises three planetary gears: first planet gear (2), second planetary gear (3) and third planet gear (20), two bunchers: the first buncher (4) and the second buncher (5), two power inverters: the first power inverter (9) and the second power inverter (10), a mechanical brake (7) and a clutch (8), described wind energy conversion system (11) is rigidly connected with the planet carrier (202) of third planet gear (20), and the planet carrier (22) of first planet gear (2), the external toothing (33) of the second planetary gear (3) and generator (6) rotor (62) three are rigidly connected, the stator winding of described generator (6) is directly connected with electrical network (12), the sun gear (201) of the rotor (42) of the first buncher (4), the sun gear (21) of first planet gear (2) and third planet gear (20) is rigidly connected, the rotor (52) of the second buncher (5), the sun gear (31) of the second planetary gear (3) are rigidly connected, have mechanical brake (7) between the external toothing (203) of third planet gear (20) and the casing of described wind power generation plant, mechanical brake (7) is closed makes the external toothing of third planet gear (20) (203) maintain static, the planet carrier (32) of the second planetary gear (3) and the external toothing (23) of first planet gear (2) are rigidly connected, clutch (8) is had, closed external toothing (23), the planet carrier (32) of the second planetary gear (3), planet carrier (202) the three's synchronous rotary of third planet gear (20) making first planet gear (2) of clutch (8) between the planet carrier (32) of the second planetary gear (3) and the planet carrier (202) of third planet gear (20), first buncher (4) is connected with electrical network (12) or other power supplys by the first power inverter (9), second buncher (5) is connected with electrical network (12) or other power supplys by the second power inverter (10), the transformation of electrical energy of electrical network is that the alternating current of variable voltage variable frequency is powered to the stator winding of the first buncher (4) and the second buncher (5) respectively by the first power inverter (9) and the second power inverter (10), it is characterized in that, described power inverter has holding wire to be connected with between the first buncher (4) and the second buncher (5), in described wind power generation plant, the first buncher (4) is by information such as the rotating speeds of sensor measurement motor (4), the first power inverter (9) is fed back to: first according to the rotating speed determining device mode of operation of wind energy conversion system (11) by holding wire, after mode of operation is determined, part wind energy is delivered to the first buncher (4) by wind energy conversion system (11), first power inverter (9) provides the alternating current of different frequency and voltage to the stator winding of the first buncher (4) according to the information of the first buncher (4) setting speed and feedback rotating speed, control the first buncher (4) generating, feedback grid (12), the setting speed of the second buncher (5) is determined according to mode of operation, second buncher (5) is by the rotating speed of sensor measurement second buncher (5), the second power inverter (10) is fed back to by holding wire, second power inverter (10) provides the alternating current of different frequency and voltage to the stator winding of the second buncher (5) according to the information of the second buncher (5) setting speed and feedback rotating speed, control the second buncher (5) to run according to setting speed, ensure generator (6) working speed of the invariablenes turning speed of the planet carrier (22) of first planet gear (2) in setting.
2. wind power generation plant as claimed in claim 1, it is characterized in that, when the rotating speed of described wind energy conversion system (11) is less than setting speed, mechanical brake (7) closes, clutch (8) is opened, and described wind power generation plant is operated in pattern one state; When the rotating speed of described wind energy conversion system (11) is greater than setting speed, mechanical brake (7) is opened, and clutch (8) closes, and described wind power generation plant is operated in pattern two-state; When the rotating speed of wind energy conversion system (11) equals setting speed, open mechanical brake (7), closed clutch (8), wind power generation plant operating state switches from pattern one to pattern two; Closed mechanical brake (7), open clutch (8), wind power generation plant operating state switches from pattern two to pattern one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310061910.6A CN103138480B (en) | 2011-06-24 | 2011-06-24 | Wind power generation plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310061910.6A CN103138480B (en) | 2011-06-24 | 2011-06-24 | Wind power generation plant |
| CN2011101718379A CN102324801B (en) | 2011-06-24 | 2011-06-24 | Wind-power generating set |
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| CN2011101718379A Division CN102324801B (en) | 2011-06-24 | 2011-06-24 | Wind-power generating set |
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| CN103138480A CN103138480A (en) | 2013-06-05 |
| CN103138480B true CN103138480B (en) | 2015-09-02 |
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| CN2011101718379A Expired - Fee Related CN102324801B (en) | 2011-06-24 | 2011-06-24 | Wind-power generating set |
| CN201310062452.8A Expired - Fee Related CN103124115B (en) | 2011-06-24 | 2011-06-24 | Wind power generation plant |
| CN201310061910.6A Expired - Fee Related CN103138480B (en) | 2011-06-24 | 2011-06-24 | Wind power generation plant |
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| CN2011101718379A Expired - Fee Related CN102324801B (en) | 2011-06-24 | 2011-06-24 | Wind-power generating set |
| CN201310062452.8A Expired - Fee Related CN103124115B (en) | 2011-06-24 | 2011-06-24 | Wind power generation plant |
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| CN102324801B (en) * | 2011-06-24 | 2013-06-12 | 中国科学院电工研究所 | Wind-power generating set |
| CN102678876B (en) * | 2012-06-04 | 2014-05-14 | 东北大学 | Wind power generation hydraulic control shifting voltage stabilizer |
| CN103953688B (en) * | 2014-04-25 | 2016-08-03 | 中国重型机械研究院股份公司 | A kind of small-power wind power generation speed increasing box using Dual-speed-ratio transmission and method thereof |
| CN106321363B (en) * | 2016-11-07 | 2019-03-26 | 燕山大学 | A kind of machine liquid mixed drive wind power generating set |
| CN108443050A (en) * | 2018-02-05 | 2018-08-24 | 佛山科学技术学院 | Stepless speed changing type ocean current energy generator |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1960135A (en) * | 2005-10-21 | 2007-05-09 | 通用汽车环球科技运作公司 | Hybrid transmissions having three motor/generators and three interconnected planetary gear sets |
| CN102324801B (en) * | 2011-06-24 | 2013-06-12 | 中国科学院电工研究所 | Wind-power generating set |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH05164037A (en) * | 1991-12-13 | 1993-06-29 | Mitsubishi Heavy Ind Ltd | Wind power generation device |
| US7115066B1 (en) * | 2002-02-11 | 2006-10-03 | Lee Paul Z | Continuously variable ratio transmission |
| CN100417008C (en) * | 2005-12-30 | 2008-09-03 | 西安理工大学 | Speed changing constant frequency method of wind force generation |
| CN201213248Y (en) * | 2008-05-16 | 2009-03-25 | 东南大学 | Continuously variant constant frequency operating wind electricity generator |
| US8088030B2 (en) * | 2008-12-01 | 2012-01-03 | GM Global Technology Operations LLC | Electrically variable transmission with modular construction |
| CN101598113B (en) * | 2009-07-10 | 2011-06-15 | 中国科学院电工研究所 | Wind power plant generation device |
-
2011
- 2011-06-24 CN CN2011101718379A patent/CN102324801B/en not_active Expired - Fee Related
- 2011-06-24 CN CN201310062452.8A patent/CN103124115B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1960135A (en) * | 2005-10-21 | 2007-05-09 | 通用汽车环球科技运作公司 | Hybrid transmissions having three motor/generators and three interconnected planetary gear sets |
| CN102324801B (en) * | 2011-06-24 | 2013-06-12 | 中国科学院电工研究所 | Wind-power generating set |
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| CN102324801A (en) | 2012-01-18 |
| CN103124115A (en) | 2013-05-29 |
| CN103138480A (en) | 2013-06-05 |
| CN102324801B (en) | 2013-06-12 |
| CN103124115B (en) | 2015-09-02 |
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