CN102338032A - Electric blade-changing system of wind generating set - Google Patents
Electric blade-changing system of wind generating set Download PDFInfo
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- CN102338032A CN102338032A CN2011102652222A CN201110265222A CN102338032A CN 102338032 A CN102338032 A CN 102338032A CN 2011102652222 A CN2011102652222 A CN 2011102652222A CN 201110265222 A CN201110265222 A CN 201110265222A CN 102338032 A CN102338032 A CN 102338032A
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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
The invention provides an electric blade-changing system of a wind generating set, which comprises a plurality of motors used for driving blades of the electric blade-changing system and a motor driving module used for driving the motors. According to the electric blade-changing system for driving one blade through the motors, on the premise of changing the size and the weight of each component of the electric blade-changing system a little, higher drive power can be provided. In addition, because the size and the weight of each component of the electric blade-changing system are changed a little, the maintenance personnel conveniently maintain the electric blade-changing system.
Description
Technical field
The present invention relates to electric variable propeller system, more particularly, relate to a kind of electric variable propeller system through a blade of a plurality of motor driven in common.
Background technique
Pitch-controlled system is one of core subtense angle of variable-pitch variable-speed type wind power generating set; It is not only the main means of wind power generating set power adjustments; Also be the only resource of variable-pitch variable-speed type wind power generating set dead halt simultaneously, this will propose high requirement to the reliability of pitch-controlled system undoubtedly.
At present, pitch-controlled system mainly contains electric variable pitch, two kinds of forms of hydraulic vane change.In electric variable propeller system, drive blade through the drive unit drives motor, thereby realize the adjusting of propeller pitch angle.
Fig. 1 illustrates the block diagram of the electric variable propeller system of existing technology.With reference to Fig. 1, the electric variable propeller system 10 of existing technology comprises power supply unit 11, electric-motor drive unit 12, control unit 13 and motor M.
Power supply unit 11 is used for Ac is converted into direct current and the direct current of changing is offered electric-motor drive unit 12 and control unit 13.For example, power supply unit 11 receives the Ac of 400V and is converted into the direct current of 60V.In addition, power supply unit 11 also can comprise the energy-storage units 11a as standby power supply, and this energy-storage units 11a is used for store electrical energy.Energy-storage units 11a is preferably super capacitor.
Electric-motor drive unit 12 is drive motor M under the control of control unit 13.Electric-motor drive unit 12 receives the control information that is used to control motor M from control unit 13, and activation bit is fed back to control unit 13.Electric-motor drive unit 12 also can comprise the inverter (not shown) that is used for the direct current (for example, DC 60V) that receives from power supply unit 11 is converted into the Ac (for example, AC 29V) that is suitable for drive motor M.
Motor M drags blade and accomplishes the action of change oar.
Control unit 13 is realized the logical operation and the control of electric variable propeller system 10.Control unit 13 also can comprise the transformer (not shown) that is used for the direct current (for example, DC 60V) that receives from power supply unit 11 is converted into DC 24V.
Electric-motor drive unit 10 also comprises measures the feedback unit (not shown).This measurement feedback unit is connected to motor M and measures the information relevant with the activation result of electric-motor drive unit 12 and give control unit 13 with this feedback information.
In addition, control unit 13 also can carry out exchanges data through the electric variable propeller system of bus and upper level control system and other blade.
Yet along with existing wind power generating set is progressively moved towards to maximize, the blade of wind energy conversion system is also more and more longer, causes the driving load of electric variable propeller system also more and more heavier, thereby the requirement of the power that electric variable propeller system is driven is also increasing.Yet the increase of driving power causes the size and the weight of each constituent elements of electric variable propeller system to become big again.
But the wheel hub inside and the wheel hub inner space that are mounted in wind power generating set owing to pitch-controlled system are often comparatively narrow and small again, and this causes the size and the weight of the each several part parts of pitch-controlled system to have more requirement and restriction.
In addition, the size of each constituent elements and the increase of weight can cause the attendant when safeguarding, to be difficult to carry these parts, thereby the maintenance of equipment is brought great difficulty.
Summary of the invention
In order to solve the problems referred to above that exist in the existing technology, the invention provides electric variable propeller system through a blade of a plurality of motor driving.
According to a kind of electric variable propeller system that is used for wind power generating set of the present invention, comprising: a plurality of motors that are used for the blade of the said electric variable propeller system of driven in common; Be used to drive the motor drive module of said a plurality of motors.
In addition; Said a plurality of motor is that synchronous machine and said motor drive module comprise power supply unit, electric-motor drive unit and control unit; Wherein, Power supply unit offers electric-motor drive unit and control unit after Ac is transformed to direct current, and electric-motor drive unit drives said a plurality of motor simultaneously under the control of control unit.
In addition, said electric variable propeller system also comprises: be connected to control unit be used to measure and the measurement feedback unit of the information that feedback is relevant with the activation result of electric-motor drive unit.
In addition, control unit is confirmed control information based on measuring the feedback unit feedack.
In addition, said a plurality of motors are asynchronous motor, and said motor drive module comprises a plurality of sub-driver modules, and wherein, each the sub-driver module in said a plurality of sub-driver modules drives the motor corresponding with this sub-driver module in said a plurality of motor.
In addition; Each sub-driver module comprises power supply unit, electric-motor drive unit and control unit; Wherein, power supply unit offers electric-motor drive unit and control unit after Ac is transformed to direct current, and control unit is according to control information control electric-motor drive unit drive motor.
In addition, each control unit is connected to the bus of said electric variable propeller system.
In addition, said electric variable propeller system also comprises: be connected to control unit be used to measure and the measurement feedback unit of the information that feedback is relevant with the activation result of electric-motor drive unit.
In addition, each control unit sends to other control unit with control information corresponding through bus.
In addition, each control unit confirms based on the control information that control information corresponding and other control unit provide whether its control information is correct, and when definite control information corresponding was incorrect, the corresponding electric-motor drive unit of control stopped the driving of motor.
According to the electric variable propeller system through a blade of a plurality of motor driving of the present invention, change under the little prerequisite in the size and the weight of each constituent elements of electric variable propeller system, bigger driving power can be provided.
In addition, because the change of the size of each constituent elements of electric variable propeller system and weight is little, therefore be convenient to the maintenance of attendant to equipment.
Description of drawings
Through the description of embodiment being carried out below in conjunction with accompanying drawing, these and/or other aspect of the present invention and advantage will become clear and be easier to and understand, wherein:
Fig. 1 is the block diagram of the electric variable propeller system of existing technology.
Fig. 2 is the electric variable propeller system that passes through a plurality of motor driving blades according to the embodiment of the invention.
Fig. 3 is the electric variable propeller system through a plurality of motor driving blades according to another embodiment of the present invention.
Embodiment
Below, will describe electric variable propeller system in detail with reference to accompanying drawing according to a plurality of motor driving blades of the present invention.
Fig. 2 is the electric variable propeller system that passes through a plurality of motor driving blades according to the embodiment of the invention.With reference to Fig. 2, comprise a plurality of motor M-1, M-2, the M-3...M-n that is used for the driven in common blade according to the electric variable propeller system 100 of the embodiment of the invention, wherein, n is the integer greater than 2.Preferably, n is 4.
In electric variable propeller system, the kind of drive between motor and the blade generally adopts the external toothing form, also can adopt non-maintaining belt form.Therefore, preferably, can with said a plurality of motor M-1, M-2, M-3...M-n be arranged in equably blade and motor connected element pitch variable bearings around.
Preferably, said a plurality of motor is an asynchronous motor.
Below, for the convenience of describing, suppose that said electric variable propeller system comprises 4 motors, i.e. n=4.
Electric variable propeller system 100 according to the embodiment of the invention also comprises motor drive module 110-1,110-2,110-3 and the 110-4 corresponding with each motor.
Each motor drive module 110 can comprise power supply unit 111, electric-motor drive unit 112 and control unit 113.
Power supply unit 111 is used for Ac is converted into direct current and the direct current of changing is offered electric-motor drive unit 112 and control unit 113.For example, power supply unit 111 receives the Ac of 400V and is converted into the direct current of 60V.In addition, power supply unit 111 also can comprise the energy-storage units 111a as standby power supply, and this energy-storage units 111a is used for providing when store electrical energy is lower than predetermined value with the electric energy that provides at power supply unit 111 electric energy.Energy-storage units 11a is preferably super capacitor.
Electric-motor drive unit 112 is drive motor M under the control of control unit 113.Electric-motor drive unit 112 receives from control unit 113 and is used to control the control information of motor M and based on control information motor M is controlled.In addition, electric-motor drive unit 112 also can feed back to control unit 113 with the activation bit that is used for drive motor M.Controller unit 113 can confirm whether the driving operations of electric-motor drive unit 112 is normal based on the activation bit of feedback.Electric-motor drive unit 112 also can comprise the inverter (not shown) that is used for the direct current (for example, DC 60V) that receives from power supply unit 111 is converted into the Ac (for example, AC 29V) that is suitable for drive motor M.
Motor 114 drags blade and accomplishes the action of change oar.
Electric variable propeller system 100 also comprises measures the feedback unit (not shown).This measurement feedback unit is used to measure the information relevant with the activation result of electric-motor drive unit 112 and gives control unit 113 with this feedback information.Wherein, the said information relevant with the activation result of electric-motor drive unit 112 comprises the position information of blade.Control unit 113 is confirmed control information controlling said electric-motor drive unit 112 drive motor M based on measuring the feedback unit feedack, thereby accomplishes the logic control that becomes oar.Alternatively, each motor drive module can comprise said measurement feedback unit.
In addition, as shown in Figure 2, the control unit 113 of motor drive module 110 can interconnect through bus, makes and can realize data sharing between the control unit 113.
As stated, in electric variable propeller system 100 of the present invention, each motor all has independent close-loop feedback control system.Issuable inharmonic problem when preventing a plurality of motor driving, electric variable propeller system 100 according to the present invention can adopt four remaining controlling methods.That is, it is correct that said at least two information are confirmed to be at least two in the control information of 4 same Control Parameter of reflection when identical, and remaining information then is considered to mistake.
Below, with specifically describing the example of in electric variable propeller system 100 according to the present invention, implementing the control of four remainings.The control unit 113 of motor drive module 110 is used to control the control information of corresponding electric-motor drive unit through the control unit 113 of other motor drive module of bus reception.For example; Control unit 113-1 receives the control information that control information that control unit 113-2 sends to electric-motor drive unit 112-2, control information that control unit 113-3 sends to electric-motor drive unit 112-3 and control unit 113-4 send to electric-motor drive unit 112-4 through bus, and the control information that three control informations that will receive and control unit 113-1 send to electric-motor drive unit 112-1 is compared.Based on comparative result, control unit 113-1 can confirm to send to electric-motor drive unit 112-1 control information whether accurately and other three control informations whether accurate.In addition, control unit 113-1 can notify comparative result to other three control units, stops to drive the motor corresponding with it so that have the control unit of wrong control information.
Though carry out comparison and deterministic process by control unit 113-1 in the foregoing description, owing to control information is shared between four control units, so each control unit all can carry out above-mentioned comparison and definite process.In addition, said comparison and definite process can be carried out by the last level controller (not shown) of the electric variable propeller system that is connected to said bus 100.
Fig. 3 is the electric variable propeller system 200 through a plurality of motor driving blades according to another embodiment of the present invention.With reference to Fig. 3, comprise a plurality of motor M-1, M-2, the M-3...M-n that is used to drive blade according to the electric variable propeller system 200 of the embodiment of the invention, wherein, n is the integer greater than 2.Preferably, n is 4.
Compare with electric variable propeller system 100 shown in Figure 2, in the electric variable propeller system 200 shown in Figure 3, control said a plurality of motor by an electric-motor drive unit.Preferably, said a plurality of motor is a synchronous machine.
With electric variable propeller system 100 shown in Figure 2 similarly, in electric variable propeller system shown in Figure 3 200, said a plurality of motor M-1, M-2, M-3...M-n be arranged in equably blade and motor connected element pitch variable bearings around.
Electric variable propeller system 200 can comprise power supply unit 211, electric-motor drive unit 212 and control unit 213.
Power supply unit 211 is used for Ac is converted into direct current and the direct current of changing is offered electric-motor drive unit 212 and control unit 213.For example, power supply unit 211 receives the Ac of 400V and is converted into the direct current of 60V.In addition, power supply unit 211 also can comprise the energy-storage units 211a as standby power supply, and this energy-storage units 211a is used for store electrical energy.Energy-storage units 211a is preferably super capacitor.
Electric-motor drive unit 212 is while drive motor M-1 to M-n under the control of control unit 213.Electric-motor drive unit 212 receives from control unit 213 and is used to control motor M-1 to the control information of M-n and based on control information motor M-1 is controlled to M-n.In addition, electric-motor drive unit 212 also can be given control unit 113 with the drive feedback that is used for drive motor M-1 to M-n.Controller unit 113 can confirm whether the driving operations of electric-motor drive unit 112 is normal based on the activation bit of feedback.Electric-motor drive unit 212 also can comprise the inverter (not shown) that is used for the direct current (for example, DC 60V) that receives from power supply unit 211 is converted into the Ac (for example, AC 29V) that is suitable for drive motor M-1 to M-n.
Motor M-1 drags blade to M-n and accomplishes the action of change oar.
Control unit 213 is realized the logical operation and the control of electric variable propeller system 200.Control unit 213 also can comprise the transformer (not shown) that is used for the direct current (for example, DC 60V) that receives from power supply unit 211 is converted into DC 24V.
Said electric variable propeller system 200 also can comprise measures the feedback unit (not shown).This feedback unit is used to measure the information relevant with the activation result of electric-motor drive unit 212 and gives control unit 213 with this feedback information, and the said information relevant with the activation result of electric-motor drive unit 212 comprises the position information of blade.Control unit 213 is confirmed control information controlling said electric-motor drive unit 212 drive motor M-1 to M-n based on measuring the feedback unit feedack, thereby accomplishes the logic control that becomes oar.
According to the electric variable propeller system through a blade of a plurality of motor driving of the present invention, change under the little prerequisite in the size and the weight of each constituent elements of electric variable propeller system, bigger driving power can be provided.
In addition, because the change of the size of each constituent elements of electric variable propeller system and weight is little, therefore be convenient to be maintained as the maintenance of personnel's equipment.
Though represented and described some embodiments of the present invention, it should be appreciated by those skilled in the art that under the situation that does not break away from the principle of the present invention that limits its scope claim and equivalent thereof and spirit, can make amendment to these embodiments.
Claims (10)
1. an electric variable propeller system that is used for wind power generating set is characterized in that, comprising:
The a plurality of motors that are used for the blade of the said electric variable propeller system of driven in common;
Be used to drive the motor drive module of said a plurality of motors.
2. electric variable propeller system according to claim 1 is characterized in that, said a plurality of motors are that synchronous machine and said motor drive module comprise power supply unit, electric-motor drive unit and control unit,
Wherein, power supply unit offers electric-motor drive unit and control unit after Ac is transformed to direct current,
Electric-motor drive unit drives said a plurality of motor simultaneously under the control of control unit.
3. electric variable propeller system according to claim 2 is characterized in that, also comprises: be connected to control unit be used to measure and the measurement feedback unit of the information that feedback is relevant with the activation result of electric-motor drive unit.
4. electric variable propeller system according to claim 3 is characterized in that, control unit is confirmed control information based on measuring the feedback unit feedack.
5. electric variable propeller system according to claim 1 is characterized in that, said a plurality of motors are asynchronous motor,
Said motor drive module comprises a plurality of sub-driver modules, and wherein, each the sub-driver module in said a plurality of sub-driver modules drives the motor corresponding with this sub-driver module in said a plurality of motor.
6. electric variable propeller system according to claim 5 is characterized in that, each sub-driver module comprises power supply unit, electric-motor drive unit and control unit,
Wherein, power supply unit offers electric-motor drive unit and control unit after Ac is transformed to direct current,
Control unit is according to control information control electric-motor drive unit drive motor.
7. electric variable propeller system according to claim 6 is characterized in that each control unit is connected to the bus of said electric variable propeller system.
8. electric variable propeller system according to claim 6 is characterized in that, also comprises:
Be connected to control unit be used to measure and the measurement feedback unit of the information that feedback is relevant with the activation result of electric-motor drive unit.
9. electric variable propeller system according to claim 7 is characterized in that each control unit sends to other control unit with control information corresponding through bus.
10. electric variable propeller system according to claim 9 is characterized in that, each control unit confirms based on the control information that control information corresponding and other control unit provide whether its control information is correct,
When definite control information corresponding was incorrect, the corresponding electric-motor drive unit of control stopped the driving of motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102652222A CN102338032A (en) | 2011-09-08 | 2011-09-08 | Electric blade-changing system of wind generating set |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102652222A CN102338032A (en) | 2011-09-08 | 2011-09-08 | Electric blade-changing system of wind generating set |
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| CN102338032A true CN102338032A (en) | 2012-02-01 |
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| CN2011102652222A Pending CN102338032A (en) | 2011-09-08 | 2011-09-08 | Electric blade-changing system of wind generating set |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103603768A (en) * | 2013-11-06 | 2014-02-26 | 北京天诚同创电气有限公司 | Variable pitch control system and charging management control method of high-power wind generating set |
| CN108131250A (en) * | 2017-12-21 | 2018-06-08 | 重庆华渝重工机电有限公司 | The auxiliary drive and its control method of a kind of pitch-controlled system |
| CN114567127A (en) * | 2021-12-08 | 2022-05-31 | 浙江运达风电股份有限公司 | Common-bus multi-transmission variable-pitch motor driving device |
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| CN103603768A (en) * | 2013-11-06 | 2014-02-26 | 北京天诚同创电气有限公司 | Variable pitch control system and charging management control method of high-power wind generating set |
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| CN108131250A (en) * | 2017-12-21 | 2018-06-08 | 重庆华渝重工机电有限公司 | The auxiliary drive and its control method of a kind of pitch-controlled system |
| CN114567127A (en) * | 2021-12-08 | 2022-05-31 | 浙江运达风电股份有限公司 | Common-bus multi-transmission variable-pitch motor driving device |
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Application publication date: 20120201 |