CN106286154A - Wind turbines rotor azimuthal measurement system - Google Patents

Wind turbines rotor azimuthal measurement system Download PDF

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Publication number
CN106286154A
CN106286154A CN201610859156.4A CN201610859156A CN106286154A CN 106286154 A CN106286154 A CN 106286154A CN 201610859156 A CN201610859156 A CN 201610859156A CN 106286154 A CN106286154 A CN 106286154A
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China
Prior art keywords
speed shaft
high speed
shaft
slow
controller
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CN201610859156.4A
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Chinese (zh)
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CN106286154B (en
Inventor
马磊
李莉
胡清阳
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Beijing Etechwin Electric Co Ltd
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Beijing Etechwin Electric Co Ltd
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Priority to CN201610859156.4A priority Critical patent/CN106286154B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2270/00—Control
    • F05B2270/30—Control parameters, e.g. input parameters
    • F05B2270/327—Rotor or generator speeds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2270/00—Control
    • F05B2270/30—Control parameters, e.g. input parameters
    • F05B2270/329—Azimuth or yaw angle

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Abstract

The open a kind of wind turbines rotor azimuthal measurement system of the present invention, including rotation-speed measuring device, zero detector and controller；Rotation-speed measuring device is for detecting the rotating speed of drive shaft；Zero detector exports the first on-off model when the fixed point of drive shaft rotates to precalculated position；Controller controls the rotation-speed measuring device rotating speed according to prefixed time interval detection drive shaft, rotating speed according to drive shaft calculates the angle value that drive shaft rotates within a preset time interval, the angle value rotated each calculated drive shaft in described prefixed time interval carries out adding up obtaining accumulated value one by one, using accumulated value as the azimuth of wind wheel, and accumulated value is reset by controller when receiving the first on-off model of zero detector output.Measurement system disclosed by the invention is without using the metal rotary disk of major diameter can complete the azimuthal measurement of wind wheel, and has preferable real-time, precision and seriality, it is possible to eliminate cumulative errors.

Description

Wind turbines rotor azimuthal measurement system
Technical field
The invention belongs to technical field of wind power generation, particularly relate to wind turbines rotor azimuthal measurement system.
Background technology
The wind wheel of wind-driven generator uses three oar blade type wind wheels mostly, and three blades are by rotating thrust bearing or special The slewing supporting device that door designs for pulp distance varying mechanism is linked on wheel hub.In three oar blade type wind wheel runnings, can basis The change of wind speed adjusts the wind propeller pitch angle to blade by driving pulp distance varying mechanism.
At present, the control method for the pulp distance varying mechanism of wind-driven generator mainly has two kinds: unified variable propeller pitch control and Independent pitch is away from control.Wherein, use independent pitch away from control, wind energy can be made full use of and be distributed not on each blade With, respectively the propeller pitch angle of each blade is effectively regulated.Independent pitch is mainly based upon orientation away from the implementation controlled Angle weight coefficient distribution, it may be assumed that rated wind speed unified change oar used below；Time more than rated wind speed, calculate three blades respectively Azimuth, according to azimuth, weight coefficient redistribute propeller pitch angle variation delta β of each blade, thus realize independent change Oar controls.Wherein, the azimuthal of blade is defined as: a certain blade blade tip upward time, the azimuth of this blade is 0 °；When this oar Leaf pass again to after rotating one week blade tip towards position time, the azimuth of blade is 360 °.It is to say, the azimuth of blade For being rotated in angle value continuous, periodically variable between 0 °～360 ° along with blade.
The azimuth of three blades is obtained by the azimuthal angle calculation of wind wheel.Such as, see shown in Fig. 1, the side of blade 1301 To for blade tip towards, the azimuth of blade 1301 is 0 °, owing to three blades of wind-driven generator are mutually 120 °, so now oar The azimuth of leaf 1302 is 120 °, and the azimuth of blade 1303 is 240 °, it is assumed that now the azimuth of wind wheel is 0 °.In fig. 2, When impeller turns over 90 ° along clockwise direction, the azimuth of wind wheel is 90 °, and the azimuth of blade 1301 is 90 °, blade 1302 Azimuth be 90 °+120 °=210 °, the azimuth of blade 1303 is 90 °+240 °=330 °；In figure 3, when impeller is along suitable When clockwise turns over 120 °, the azimuth of wind wheel is 120 °, and the azimuth of blade 1301 is 120 °, the azimuth of blade 1302 Being 120 °+120 °=240 °, the azimuth of blade 1303 is 120 °+240 °=360 °, and 360 ° overlap with 0 ° simultaneously, i.e. blade After the azimuth of 1303 arrives 360 °, again start to calculate from 0 °.
During the pulp distance varying mechanism of wind-driven generator is carried out independent feathering control, need to measure wind-driven generator The azimuth of wind wheel in group, and then calculate the azimuth of three blades.At present, azimuthal to the wind wheel of wind power generating set Measure the most in the following ways: metal rotary disk (for rosette) is installed on the slow-speed shaft of wind power generating set, at metal On circumference at disk edge, perforate at equal intervals, use photoswitch to carry out position detection.When the hole in metal rotary disk forwards light to During the position of electric switch, the signal condition of photoswitch is the first state, when the hole in metal rotary disk turns over photoswitch, and light The signal condition of electric switch is the second state, changes counting according to the state of photoswitch, thus calculates the side of wind wheel Parallactic angle.
But, the above-mentioned azimuthal metering system of the wind wheel for wind power generating set, there is following defect: first, survey Accuracy of measurement is relatively low, it is assumed that in metal rotary disk, number of aperture is 24, then highest measurement precision is 360 °/24=15 °, i.e. every time angle Angle value is changed to 15 °, and the azimuth that such as wind wheel is continuous three times is followed successively by 0 °, 15 °, 30 °；Second, need to open in metal rotary disk If the hole of predetermined number, in order to ensure that photoswitch can trigger with normal response, it is relatively big that the diameter of metal rotary disk need to design, this The quality causing metal rotary disk is relatively big, and the metal rotary disk that installation quality is bigger on slow-speed shaft, on the one hand need to change low speed The structure of axle, this causes the structure of slow-speed shaft complex, on the other hand adds the load of slow-speed shaft, be unfavorable for slow-speed shaft Stable operation.
Summary of the invention
In view of this, it is an object of the invention to provide wind turbines rotor azimuthal measurement system, can improve The azimuthal certainty of measurement of wind wheel, and need not arrange the metal rotary disk of major diameter at the slow-speed shaft of wind-driven generator.
For achieving the above object, the present invention provides following technical scheme:
First aspect, the present invention provides a kind of wind turbines rotor azimuthal measurement system, described wind-driven generator Including wind wheel, electromotor and drive shaft, described measurement system includes rotation-speed measuring device, zero detector and controller；
Described rotation-speed measuring device is for detecting the rotating speed of described drive shaft；
Described zero detector, when the fixed point of described drive shaft rotates to precalculated position, exports the first switching value letter Number；
Described controller is connected with described rotation-speed measuring device and described zero detector respectively, and described controller controls Described rotation-speed measuring device detects the rotating speed of described drive shaft according to prefixed time interval, calculates according to the rotating speed of described drive shaft The angle value that described drive shaft rotates in described prefixed time interval, to each calculated described drive shaft described pre- If the angle value rotated in time interval carries out adding up obtaining accumulated value one by one, described controller is receiving described zero testing Device output the first on-off model time, described accumulated value is reset, described controller using described accumulated value as described wind The azimuth of wheel.
Preferably, in above-mentioned measurement system, described controller is additionally operable to: when described accumulated value is more than 360 °, determine institute State zero detector to break down, by described accumulated value to 360 ° of remainders, using the remainder that obtains as the orientation of described wind wheel Angle.
Preferably, in above-mentioned measurement system, the periphery of described drive shaft is arranged with drive shaft rotating disk, described drive shaft rotating disk Being provided with detection hole, described detection hole is the fixed point of described drive shaft；Described zero detector is described predetermined for being arranged at The photoswitch of position or proximity switch, in described drive shaft rotary course, the detection hole of described drive shaft rotating disk rotates extremely The position relative with described photoswitch or described proximity switch.
Preferably, in above-mentioned measurement system, the periphery of described drive shaft is arranged with drive shaft rotating disk, described drive shaft rotating disk The first side be provided with block, described block is the fixed point of described drive shaft；Described zero detector for be arranged at The proximity switch in the precalculated position that the first side of described drive shaft rotating disk is relative, in described drive shaft rotary course, described The block of drive shaft rotating disk rotates to the position relative with described proximity switch.
Preferably, in above-mentioned measurement system, the periphery of described drive shaft is provided with block, and described block is described drive shaft Fixed point；Described zero detector is the proximity switch being arranged at described precalculated position, at described drive shaft rotary course In, described block rotates to the position relative with described proximity switch.
Preferably, in above-mentioned measurement system, described rotation-speed measuring device is Hall revolution speed transducer, magnetic power rotation speed sensor Or slip ring encoder.
Preferably, in above-mentioned measurement system, described drive shaft is the main shaft of direct-driving type wind power generation machine, or described driving Axle is the slow-speed shaft of double feed wind power generator.
Preferably, in above-mentioned measurement system, the main shaft of direct-driving type wind power generation machine is internally provided with slip ring, and described slip ring is used Cable within connecting wind wheel hub and the cable in cabin, described rotation-speed measuring device is to be arranged at the cunning within described slip ring Ring encoder, and described slip ring encoder is positioned on the rotation axis of described slip ring.
Second aspect, the present invention provides a kind of wind turbines rotor azimuthal measurement system, described wind-driven generator Including wind wheel, electromotor, slow-speed shaft, gear-box and high speed shaft, described slow-speed shaft is connected with described wind wheel, described high speed shaft and institute Stating electromotor to connect, described gear-box is used for connecting described slow-speed shaft and described high speed shaft, and described measurement system includes that rotating speed is surveyed Amount device, zero detector and controller；
Described rotation-speed measuring device is for detecting the rotating speed of described high speed shaft；
Described zero detector, when the fixed point of described slow-speed shaft rotates to precalculated position, exports the first switching value letter Number；
Described controller is connected with described rotation-speed measuring device and described zero detector respectively, and described controller controls Described rotation-speed measuring device detects the rotating speed of described high speed shaft according to prefixed time interval, according to the rotating speed of described high speed shaft and The angle value that slow-speed shaft described in the gear ratio calculation of described gear-box rotates in described prefixed time interval, to calculating every time To the angle value that rotates in described prefixed time interval of described slow-speed shaft carry out one by one cumulative obtaining accumulated value, described control Described accumulated value, when receiving the first on-off model of described zero detector output, is reset, described controller by device Using described accumulated value as the azimuth of described wind wheel.
Preferably, in above-mentioned measurement system, described controller is additionally operable to: when described accumulated value is more than 360 °, determine institute State zero detector to break down, by described accumulated value to 360 ° of remainders, using the remainder that obtains as the orientation of described wind wheel Angle.
Preferably, in above-mentioned measurement system, the periphery of described slow-speed shaft is arranged with slow-speed shaft rotating disk, described slow-speed shaft rotating disk Being provided with detection hole, described detection hole is the fixed point of described slow-speed shaft；Described zero detector is described predetermined for being arranged at The photoswitch of position or proximity switch, in described slow-speed shaft rotary course, the detection hole of described slow-speed shaft rotating disk rotates extremely The position relative with described photoswitch or described proximity switch.
Preferably, in above-mentioned measurement system, the periphery of described slow-speed shaft is arranged with slow-speed shaft rotating disk, described slow-speed shaft rotating disk The first side be provided with block, described block is the fixed point of described slow-speed shaft；Described zero detector for be arranged at The proximity switch in the precalculated position that the first side of described slow-speed shaft rotating disk is relative, in described slow-speed shaft rotary course, described The block of slow-speed shaft rotating disk rotates to the position relative with described proximity switch.
Preferably, in above-mentioned measurement system, the periphery of described slow-speed shaft is provided with block, and described block is described slow-speed shaft Fixed point；Described zero detector is the proximity switch being arranged at described precalculated position, at described slow-speed shaft rotary course In, described block rotates to the position relative with described proximity switch.
The third aspect, the present invention provides a kind of wind turbines rotor azimuthal measurement system, described wind-driven generator Including wind wheel, electromotor, slow-speed shaft, gear-box and high speed shaft, described slow-speed shaft is connected with described wind wheel, described high speed shaft and institute Stating electromotor to connect, described gear-box is used for connecting described slow-speed shaft and described high speed shaft, and described measurement system includes that rotating speed is surveyed Amount device, zero detector and controller；
Described rotation-speed measuring device is for detecting the rotating speed of described high speed shaft；
Described zero detector, when the fixed point of described high speed shaft rotates to precalculated position, exports the first switching value letter Number；
Described controller is connected with described rotation-speed measuring device and described zero detector respectively, and described controller controls Described rotation-speed measuring device detects the rotating speed of described high speed shaft according to prefixed time interval, according to the rotating speed of described high speed shaft and The angle value that slow-speed shaft described in the gear ratio calculation of described gear-box rotates in described prefixed time interval, to calculating every time To the angle value that rotates in described prefixed time interval of described slow-speed shaft carry out one by one cumulative obtaining accumulated value, described control The number of times that device exports the first on-off model to described zero detector counts, and reaches described gear-box in count value During the integer part of gear ratio, described accumulated value is verified as the first angle, afterwards when described accumulated value reaches 360 °, by institute State accumulated value and described count value to reset, described controller using described accumulated value as the azimuth of described wind wheel；
Described first angle is 360 ° of-Y/N, and wherein, N is the gear ratio of described gear-box, and Y is the transmission of described gear-box The fractional part of ratio is multiplied by 360 °.
Preferably, in above-mentioned measurement system, described controller is additionally operable to: when described accumulated value is more than 360 °, determine institute State zero detector to break down, by described accumulated value to 360 ° of remainders, using the remainder that obtains as the orientation of described wind wheel Angle.
Preferably, in above-mentioned measurement system, the periphery of described high speed shaft is arranged with high speed shaft rotating disk, described high speed shaft rotating disk Being provided with detection hole, described detection hole is the fixed point of described high speed shaft；Described zero detector is described predetermined for being arranged at The photoswitch of position or proximity switch, in described high speed shaft rotary course, the detection hole of described high speed shaft rotating disk rotates extremely The position relative with described photoswitch or described proximity switch.
Preferably, in above-mentioned measurement system, the periphery of described high speed shaft is arranged with high speed shaft rotating disk, described high speed shaft rotating disk The first side be provided with block, described block is the fixed point of described high speed shaft；Described zero detector for be arranged at The proximity switch in the precalculated position that the first side of described high speed shaft rotating disk is relative, in described high speed shaft rotary course, described The block of high speed shaft rotating disk rotates to the position relative with described proximity switch.
Preferably, in above-mentioned measurement system, the periphery of described high speed shaft is provided with block, and described block is described high speed shaft Fixed point；Described zero detector is the proximity switch being arranged at described precalculated position, at described high speed shaft rotary course In, described block rotates to the position relative with described proximity switch.
Fourth aspect, the present invention provides a kind of wind turbines rotor azimuthal measurement system, described wind-driven generator Including wind wheel, electromotor, slow-speed shaft, gear-box and high speed shaft, described slow-speed shaft is connected with described wind wheel, described high speed shaft and institute Stating electromotor to connect, described gear-box is used for connecting described slow-speed shaft and described high speed shaft, and described measurement system includes that rotating speed is surveyed Amount device, zero detector and controller；
Described rotation-speed measuring device is for detecting the rotating speed of described slow-speed shaft；
Described zero detector, when the fixed point of described high speed shaft rotates to precalculated position, exports the first switching value letter Number；
Described controller is connected with described rotation-speed measuring device and described zero detector respectively, and described controller controls Described rotation-speed measuring device detects the rotating speed of described slow-speed shaft according to prefixed time interval, calculates according to the rotating speed of described slow-speed shaft The angle value that described slow-speed shaft rotates in described prefixed time interval, to each calculated described slow-speed shaft described pre- If the angle value rotated in time interval carries out adding up obtaining accumulated value one by one, described controller is defeated to described zero detector The number of times going out the first on-off model counts, when the integer part of the gear ratio that count value reaches described gear-box, and will Described accumulated value is verified as the first angle, afterwards when described accumulated value reaches 360 °, by described accumulated value and described count value Reset, described controller using described accumulated value as the azimuth of described wind wheel；
Described first angle is 360 ° of-Y/N, and wherein, N is the gear ratio of described gear-box, and Y is the transmission of described gear-box The fractional part of ratio is multiplied by 360 °.
Preferably, in above-mentioned measurement system, described controller is additionally operable to: when described accumulated value is more than 360 °, determine institute State zero detector to break down, by described accumulated value to 360 ° of remainders, using the remainder that obtains as the orientation of described wind wheel Angle.
Preferably, in above-mentioned measurement system, the periphery of described high speed shaft is arranged with high speed shaft rotating disk, described high speed shaft rotating disk Being provided with detection hole, described detection hole is the fixed point of described high speed shaft；Described zero detector is described predetermined for being arranged at The photoswitch of position or proximity switch, in described high speed shaft rotary course, the detection hole of described high speed shaft rotating disk rotates extremely The position relative with described photoswitch or described proximity switch.
Preferably, in above-mentioned measurement system, the periphery of described high speed shaft is arranged with high speed shaft rotating disk, described high speed shaft rotating disk The first side be provided with block, described block is the fixed point of described high speed shaft；Described zero detector for be arranged at The proximity switch in the precalculated position that the first side of described high speed shaft rotating disk is relative, in described high speed shaft rotary course, described The block of high speed shaft rotating disk rotates to the position relative with described proximity switch.
Preferably, in above-mentioned measurement system, the periphery of described high speed shaft is provided with block, and described block is described high speed shaft Fixed point；Described zero detector is the proximity switch being arranged at described precalculated position, at described high speed shaft rotary course In, described block rotates to the position relative with described proximity switch.
5th aspect, the present invention provides a kind of wind turbines rotor azimuthal measurement system, described wind-driven generator Including wind wheel, electromotor, slow-speed shaft, gear-box and high speed shaft, described slow-speed shaft is connected with described wind wheel, described high speed shaft and institute Stating electromotor to connect, described gear-box is used for connecting described slow-speed shaft and described high speed shaft, and described measurement system includes that rotating speed is surveyed Amount device, zero detector, clearing detection device and controller；
Described rotation-speed measuring device is for detecting the rotating speed of described high speed shaft；
Described zero detector, when the fixed point of described high speed shaft rotates to precalculated position, exports the first switching value letter Number；
The described detection device that resets is arranged in the direction of rotation of described high speed shaft relative to described zero detector Postpone the position of the second angle, when the fixed point at described high speed shaft goes to the position relative with described clearing detection device, institute Stating clearing detection device and export the first on-off model, wherein said second angle is the fractional part of the gear ratio of described gear-box Take separately with 360 °；
Described controller is respectively with described rotation-speed measuring device, described zero detector and described clearing detection device even Connecing, described controller controls described rotation-speed measuring device and detects the rotating speed of described high speed shaft according to prefixed time interval, according to institute State what slow-speed shaft described in the rotating speed of high speed shaft and the gear ratio calculation of described gear-box rotated in described prefixed time interval Angle value, carries out adding up to each calculated angle value obtaining accumulated value one by one, and described controller is to described zero testing Device exports the number of times of the first on-off model and counts, and reaches the integer part of the gear ratio of described gear-box in count value Afterwards, described controller when receiving described the first on-off model resetting detection device output, by described accumulated value and Described count value resets, described controller using described accumulated value as the azimuth of described wind wheel；
Described first angle is 360 ° of-Y/N, and wherein, N is the gear ratio of described gear-box, and Y is the transmission of described gear-box The fractional part of ratio is multiplied by 360 °.
6th aspect, the present invention provides a kind of wind turbines rotor azimuthal measurement system, described wind-driven generator Including wind wheel, electromotor, slow-speed shaft, gear-box and high speed shaft, described slow-speed shaft is connected with described wind wheel, described high speed shaft and institute Stating electromotor to connect, described gear-box is used for connecting described slow-speed shaft and described high speed shaft, and described measurement system includes that rotating speed is surveyed Amount device, zero detector, clearing detection device and controller；
Described rotation-speed measuring device is for detecting the rotating speed of described slow-speed shaft；
Described zero detector, when the fixed point of described high speed shaft rotates to precalculated position, exports the first switching value letter Number；
The described detection device that resets is arranged in the direction of rotation of described high speed shaft relative to described zero detector Postpone the position of the second angle, when the fixed point at described high speed shaft goes to the position relative with described clearing detection device, institute Stating clearing detection device and export the first on-off model, wherein said second angle is the fractional part of the gear ratio of described gear-box Take separately with 360 °；
Described controller is respectively with described rotation-speed measuring device, described zero detector and described clearing detection device even Connecing, described controller controls described rotation-speed measuring device and detects the rotating speed of described slow-speed shaft according to prefixed time interval, according to institute The rotating speed stating slow-speed shaft calculates the angle value that described slow-speed shaft rotates in described prefixed time interval, to the most calculated Angle value carries out adding up obtaining accumulated value one by one, and described controller exports the first on-off model to described zero detector Number of times counts, and after the integer part of the gear ratio reaching described gear-box in count value, described controller is receiving During the first on-off model that described clearing detection device exports, described accumulated value and described count value are reset, described control Device using described accumulated value as the azimuth of described wind wheel；
Described first angle is 360 ° of-Y/N, and wherein, N is the gear ratio of described gear-box, and Y is the transmission of described gear-box The fractional part of ratio is multiplied by 360 °.
As can be seen here, the invention have the benefit that wind turbines rotor disclosed by the invention is azimuthal and measure system System, according to prefixed time interval detection slow-speed shaft or the rotating speed of main shaft, or turning according to prefixed time interval detection high speed shaft Speed, utilizes the rotating speed of high speed shaft and the rotating speed of the gear ratio calculation slow-speed shaft of gear-box, afterwards turning according to slow-speed shaft or main shaft Speed calculates the azimuth of wind wheel, and the Rotating speed measring for slow-speed shaft, main shaft or high speed shaft is to need not at slow-speed shaft, main shaft Or high speed shaft arranges the metal rotary disk of major diameter, measurement system the most disclosed by the invention is without arranging major diameter metal rotating disk Just can realize measurement azimuthal to wind wheel；Meanwhile, measurement system disclosed by the invention, slow-speed shaft, master detected every time The azimuth of current time wind wheel can be calculated after the rotating speed of axle or high speed shaft, there is preferable real-time, and calculate To the azimuthal precision of wind wheel higher, there is preferable seriality, do not have staged saltus step；It addition, controller is at wind After wheel turns over a circle, the azimuth of wind wheel is reset, it is possible to eliminate cumulative errors.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to The accompanying drawing provided obtains other accompanying drawing.
Fig. 1 is a kind of position view of blade in wind-driven generator；
Fig. 2 is that in wind-driven generator shown in Fig. 1, blade turns clockwise the position view after 90 °；
Fig. 3 is that in wind-driven generator shown in Fig. 1, blade turns clockwise the position view after 120 °；
Fig. 4 is the structure chart of a kind of wind turbines rotor disclosed by the invention azimuthal measurement system；
Fig. 5 is the structure chart of another kind of wind turbines rotor azimuthal measurement system disclosed by the invention；
Fig. 6 is the structure chart of another kind of wind turbines rotor azimuthal measurement system disclosed by the invention；
Fig. 7 is the structure chart of another kind of wind turbines rotor azimuthal measurement system disclosed by the invention；
Fig. 8 is the structure chart of another kind of wind turbines rotor azimuthal measurement system disclosed by the invention；
Fig. 9 is the front view of another kind of direct-driving type wind power generation machine wind wheel azimuthal measurement system disclosed by the invention；
Figure 10 is the right view of measurement system shown in Fig. 9；
Figure 11 is the structure chart of another kind of double feed wind power generator wind wheel azimuthal measurement system disclosed by the invention；
Figure 12 is the structure chart of another kind of double feed wind power generator wind wheel azimuthal measurement system disclosed by the invention；
Figure 13 is the structure chart of another kind of double feed wind power generator wind wheel azimuthal measurement system disclosed by the invention；
Figure 14 is the structure chart of another kind of double feed wind power generator wind wheel azimuthal measurement system disclosed by the invention；
Figure 15 is the structure chart of another kind of double feed wind power generator wind wheel azimuthal measurement system disclosed by the invention；
Figure 16 is the structure chart of another kind of double feed wind power generator wind wheel azimuthal measurement system disclosed by the invention；
Figure 17 is the structure chart of another kind of double feed wind power generator wind wheel azimuthal measurement system disclosed by the invention；
Figure 18 is the structure chart of another kind of double feed wind power generator wind wheel azimuthal measurement system disclosed by the invention；
Figure 19 is the structure chart of another kind of double feed wind power generator wind wheel azimuthal measurement system disclosed by the invention.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the embodiment of the present invention In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only It is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill The every other embodiment that personnel are obtained under not making creative work premise, broadly falls into the scope of protection of the invention.
The present invention provides wind turbines rotor azimuthal measurement system, can improve wind wheel azimuthal measurement essence Degree, and need not arrange the metal rotary disk of major diameter at the main shaft of wind-driven generator or slow-speed shaft.Fig. 4 to Fig. 8 institute of the present invention The measurement system shown can apply to various direct-driving type wind power generation machine and double feed wind power generator.Direct-driving type wind power generation machine Including wind wheel, main shaft and electromotor, main shaft is used for connecting wind wheel and electromotor, and wind wheel drives electromotor to rotate by main shaft.Double Feedback type wind-driven generator includes wind wheel, slow-speed shaft, gear-box, high speed shaft and electromotor, and slow-speed shaft is connected with wind wheel, high speed shaft with Electromotor connects, and gear-box is used for connecting slow-speed shaft and high speed shaft, and wind wheel drives slow-speed shaft to rotate, and slow-speed shaft driven gear case revolves Turning, gear-box drives high speed shaft to rotate, and high speed shaft drives electromotor to rotate.
See the structure chart that Fig. 4, Fig. 4 are a kind of wind turbines rotor disclosed by the invention azimuthal measurement system. Wind-driven generator includes wind wheel (not shown), electromotor (not shown) and drive shaft 10.Direct-driving type wind-force is sent out For motor, drive shaft 10 is main shaft；For double feed wind power generator, drive shaft 10 is the low speed in drive shaft system Axle.Measurement system includes rotation-speed measuring device 20, zero detector 30 and controller 40.
Rotation-speed measuring device 20 is for detecting the rotating speed of drive shaft 10.
Zero detector 30, when the fixed point of drive shaft 10 rotates to precalculated position, exports the first on-off model. This precalculated position can be considered 0 ° of position of wind wheel.In enforcement, this precalculated position may be located at just going up of the centrage of drive shaft 10 Side or underface.
Controller 40 is connected with rotation-speed measuring device 20 and zero detector 30 respectively.Controller 40 controls tachometric survey Device 20, according to the rotating speed of prefixed time interval detection drive shaft 10, calculates drive shaft 10 according to the rotating speed of drive shaft 10 pre-at this If the angle value rotated in time interval, the angle that each calculated drive shaft 10 is rotated in this prefixed time interval Value carries out adding up obtaining accumulated value one by one.Further, controller 40 is receiving the first switching value of zero detector 30 output During signal, accumulated value is reset.Controller 40 using accumulated value as the azimuth of wind wheel.
Needing exist for explanation, controller 40 controls rotation-speed measuring device 20 and carries out the prefixed time interval of Rotating speed measring Can be variable time interval, namely controller 40 control rotation-speed measuring device 20 according to variable time interval detection drive The rotating speed of moving axis 10.As a kind of preferred version, controller 40 controls rotation-speed measuring device 20 when carrying out Rotating speed measring default Between be spaced apart fixed time interval, namely controller 40 controls rotation-speed measuring device 20 and periodically detects drive shaft 10 Rotating speed.
Below in conjunction with example, measurement system disclosed by the invention is illustrated.
In wind-driven generator running, the blade of wind-driven generator revolves according to specific direction under the action of the forces of the wind Turning, paddle belt wind symptom wheel rotates, and wind wheel drives drive shaft 10 to rotate, and drive shaft 10 drives electromotor to rotate.
Controller 40 controls rotation-speed measuring device 20 and is periodically detected the rotating speed of drive shaft 10 according to the time interval of 20ms, Namely controller 40 controls the rotating speed of rotation-speed measuring device 20 every 20ms drive shaft 10 of detection.Controller 40 is according to every time The rotating speed detected calculates the angle value that drive shaft 10 rotates in the 20ms in past.Concrete: assume rotation-speed measuring device 20 The rotating speed detected in the t1 moment is n rpm, then the angle rotated in drive shaft 10 20ms before time tl is n* 360/60/50.The angle value that each calculated drive shaft 10 rotates within a preset time interval is entered by controller 40 one by one Row is cumulative, and the accumulated value obtained is as the azimuth of wind wheel.
Needing exist for explanation, wind wheel and the rotating speed of main shaft in direct-driving type wind power generation machine are identical, double-fed Wind wheel and the rotating speed of slow-speed shaft in wind-driven generator are identical.Therefore controller 40 is by each calculated drive shaft 10 The angle value rotated the within a preset time interval cumulative accumulated value obtained one by one, can be as the azimuth of wind wheel.
It addition, when zero detector 20 exports the first on-off model, show that the fixed point of drive shaft 10 rotates extremely Precalculated position, say, that wind wheel has been rotated through a circle, and now, accumulated value is reset (namely by the side of wind wheel by controller 40 Parallactic angle resets).Afterwards, when controller 40 is calculated the angle value that drive shaft 10 rotates within a preset time interval again, Add up on the basis of 0 °.By the azimuth of wind wheel being carried out clearly when the fixed point of drive shaft 10 rotates to precalculated position Zero, cumulative errors can be eliminated.It is to say, wind wheel often turns over a circle, the azimuth of wind wheel is just carried out once by controller 40 Calibration, in order to eliminate cumulative errors.
Wind turbines rotor azimuthal measurement system that the present invention is disclosed above, utilizes rotation-speed measuring device according in advance If the rotating speed of time interval detection drive shaft (slow-speed shaft or main shaft), according to the rotating speed of drive shaft, controller determines that drive shaft exists The angle value rotated in this prefixed time interval, the angle that each calculated drive shaft is rotated within a preset time interval Value adds up one by one, using accumulated value as the azimuth of wind wheel.Further, zero detector rotates at the fixed point of drive shaft Exporting the first on-off model during to precalculated position, accumulated value is reset by controller when receiving the first on-off model, also It is exactly that the azimuth of wind wheel is reset.
Wind turbines rotor disclosed by the invention azimuthal measurement system, calculates wind wheel according to the rotating speed of drive shaft Azimuth, and the Rotating speed measring for drive shaft is the metal rotary disk that need not arrange major diameter in drive shaft, therefore this The measurement system of disclosure of the invention just can realize measurement azimuthal to wind wheel without arranging major diameter metal rotating disk in drive shaft； Meanwhile, measurement system disclosed by the invention, current time wind wheel can be calculated after rotating speed drive shaft every time being detected Azimuth, has preferable real-time, and the azimuthal precision of calculated wind wheel is higher, have preferable seriality, Do not have staged saltus step；It addition, controller is after wind wheel turns over a circle, the azimuth of wind wheel is reset, it is possible to eliminate Cumulative errors.
As a kind of preferred version, in the measurement system shown in Fig. 4, controller 40 is additionally operable to: exceed at accumulated value When 360 °, determine that zero detector 30 breaks down, by accumulated value to 360 ° of remainders, using the remainder that obtains as the side of wind wheel Parallactic angle.
If zero detector 30 is up, then when the fixed point of drive shaft 10 rotates to precalculated position Time, zero detector 30 can export the first on-off model, and controller 40 receives accumulated value after the first on-off model Resetting, therefore accumulated value is not over 360 °.When the accumulated value that controller 40 obtains is more than 360 °, i.e. can determine that zero-bit Detection device 30 breaks down, in this case, controller 40 by accumulated value to 360 ° of remainders, using the remainder that obtains as wind The azimuth of wheel.
Based on this preferred version, when zero detector 30 breaks down, controller 40 can detect this event in time Barrier, and in a period of time after zero detector 30 breaks down, controller 40 remains able to accurately detect wind wheel Azimuth.
In the measurement system shown in Fig. 4 of the present invention, rotation-speed measuring device 20 can be that Hall revolution speed transducer, magnetoelectricity turn Speed sensor or slip ring encoder, zero detector 30 can also use various structures to realize simultaneously, and below in conjunction with the accompanying drawings 5 Illustrate to accompanying drawing 8.
See the structure that Fig. 5, Fig. 5 are another kind of wind turbines rotor azimuthal measurement system disclosed by the invention Figure.Wind-driven generator includes wind wheel (not shown), electromotor (not shown) and drive shaft 10.For direct-driving type wind-force For electromotor, drive shaft 10 is main shaft；For double feed wind power generator, drive shaft 10 is the low speed in drive shaft system Axle.Measurement system includes rotation-speed measuring device 20, zero detector and controller 40.
Wherein:
The periphery of drive shaft 10 is arranged with drive shaft rotating disk 101, and this drive shaft rotating disk 101 is provided with detection hole 102, this inspection Gaging hole 102 is as the fixed point of drive shaft 10.
Rotation-speed measuring device 20 is for detecting the rotating speed of drive shaft 10.Rotation-speed measuring device 20 can be Hall revolution speed sensing Device or magnetic power rotation speed sensor.
Zero detector is specially arranged at the photoswitch 31 in precalculated position.This precalculated position can be considered 0 ° of wind wheel Position.In enforcement, this precalculated position may be located at surface or the underface of the centrage of drive shaft 10.Revolve in drive shaft 10 During Zhuaning, drive shaft rotating disk 101 concomitant rotation, detection hole 102 can go to the position relative with photoswitch 31.
Photoswitch is also called photoelectric sensor, is the abbreviation of photoelectric proximity switch.Photoswitch is to utilize detected material Light beam blocked or reflects, detecting the presence or absence of object in its induction region.102 turns of the detection hole when drive shaft rotating disk 101 During to the most relative with photoswitch 31 position, the light beam that photoswitch 31 is launched will not be blocked or reflect, and photoswitch 31 is defeated Going out the first on-off model, when other positions of drive shaft rotating disk 101 go to the position relative with photoswitch 31, light is established by cable The light beam driven shaft rotating disk 101 closing 31 transmittings blocks or reflects, and photoswitch 31 exports second switch amount signal.
Needing exist for explanation, photoswitch 31 can use any one photoswitch existing, photoswitch 31 The first on-off model produced be high level signal, second switch amount signal be low level signal, or the first switching value letter Number it is high level signal for low level signal, second switch amount signal.First on-off model and the of photoswitch 31 output The concrete signal form of two on-off model, is determined by the particular type of photoswitch 31.
Controller 40 is connected with rotation-speed measuring device 20 and photoswitch 31 respectively.Controller 40 controls rotation-speed measuring device 20 detect the rotating speed of drive shaft 10 according to prefixed time interval, calculate drive shaft 10 according to the rotating speed of drive shaft 10 and preset described The angle value rotated in time interval, the angle value that each calculated drive shaft 10 is rotated in this prefixed time interval Carrying out one by one adds up obtains accumulated value.Further, controller 40 receive photoswitch 31 output the first on-off model time, Accumulated value is reset.Controller 40 using accumulated value as the azimuth of wind wheel.
Here emphatically fixed point and the photoswitch 31 of drive shaft 10 is illustrated, the specific works mistake of controller 40 Journey, refers to description above.
Measurement system shown in Fig. 5 of the present invention, the detection hole on drive shaft rotating disk that drive shaft periphery will be sheathed on as The fixed point of drive shaft, utilizes whether the fixed point of the photoswitch detection drive shaft being arranged at precalculated position goes to pre-determined bit Put, thus trigger controller carries out the clear operation of accumulated value, to realize accurate measurement azimuthal to wind wheel.
See the structure that Fig. 6, Fig. 6 are another kind of wind turbines rotor azimuthal measurement system disclosed by the invention Figure.Wind-driven generator includes wind wheel (not shown), electromotor (not shown) and drive shaft 10.For direct-driving type wind-force For electromotor, drive shaft 10 is main shaft；For double feed wind power generator, drive shaft 10 is the low speed in drive shaft system Axle.Measurement system includes rotation-speed measuring device 20, zero detector and controller 40.
Wherein:
The periphery of drive shaft 10 is arranged with drive shaft rotating disk 101, and this drive shaft rotating disk 101 is provided with detection hole 102, this inspection Gaging hole 102 is as the fixed point of drive shaft 10.
Rotation-speed measuring device 20 is for detecting the rotating speed of drive shaft 10.Rotation-speed measuring device 20 can be Hall revolution speed sensing Device or magnetic power rotation speed sensor.
Zero detector is specially arranged at the proximity switch 32 in precalculated position.This precalculated position can be considered 0 ° of wind wheel Position.In enforcement, this precalculated position may be located at surface or the underface of the centrage of drive shaft 10.Revolve in drive shaft 10 During Zhuaning, drive shaft rotating disk 101 concomitant rotation, detection hole 102 can go to the position relative with proximity switch 32.
Proximity switch is also called contactless proximity switch.Whether proximity switch can detect has thing in its induction region Body.When the detection hole 102 of drive shaft rotating disk 101 goes to the position relative with proximity switch 32, in the sensing of proximity switch 32 Object, proximity switch 32 is not had to export the first on-off model in region；When other positions of drive shaft rotating disk 101 go to and connect During the position that closely switch 32 is relative, object, proximity switch 32 is had to export second switch amount in the induction region of proximity switch 32 Signal.
Needing exist for explanation, proximity switch 32 can use any one photoswitch existing, proximity switch 32 The first on-off model produced be high level signal, second switch amount signal be low level signal, or the first switching value letter Number it is high level signal for low level signal, second switch amount signal.First on-off model and the of proximity switch 32 output The concrete signal form of two on-off model, is determined by the particular type of proximity switch 32.
Controller 40 is connected with rotation-speed measuring device 20 and proximity switch 32 respectively.Controller 40 controls rotation-speed measuring device 20 detect the rotating speed of drive shaft 10 according to prefixed time interval, calculate drive shaft 10 according to the rotating speed of drive shaft 10 and preset described The angle value rotated in time interval, the angle value that each calculated drive shaft 10 is rotated in this prefixed time interval Carrying out one by one adds up obtains accumulated value.Further, controller 40 receive proximity switch 32 output the first on-off model time, Accumulated value is reset.Controller 40 using accumulated value as the azimuth of wind wheel.
Measurement system shown in Fig. 6 of the present invention, the detection hole on drive shaft rotating disk that drive shaft periphery will be sheathed on as The fixed point of drive shaft, utilizes whether the fixed point of the proximity switch detection drive shaft being arranged at precalculated position goes to pre-determined bit Put, thus trigger controller carries out the clear operation of accumulated value, to realize accurate measurement azimuthal to wind wheel.
See the structure that Fig. 7, Fig. 7 are another kind of wind turbines rotor azimuthal measurement system disclosed by the invention Figure.Wherein, wind-driven generator includes wind wheel (not shown), electromotor (not shown) and drive shaft 10.For directly driving For type wind-driven generator, drive shaft 10 is main shaft；For double feed wind power generator, drive shaft 10 is in drive shaft system Slow-speed shaft.Measurement system includes rotation-speed measuring device 20, zero detector and controller 40.
Wherein:
The periphery of drive shaft 10 is arranged with drive shaft rotating disk 101, and the first side of drive shaft rotating disk 101 is provided with block 103, this block 103 is as the fixed point of drive shaft 10.
Rotation-speed measuring device 20 is for detecting the rotating speed of drive shaft 10.Rotation-speed measuring device 20 can be Hall revolution speed sensing Device or magnetic power rotation speed sensor.
Zero detector is particularly as follows: be arranged at connecing of the precalculated position relative with the first side of drive shaft rotating disk 101 Nearly switch 32.This precalculated position can be considered 0 ° of position of wind wheel.In enforcement, this precalculated position may be located at the center of drive shaft 10 The surface of line or underface.In drive shaft 10 rotary course, drive shaft rotating disk 101 concomitant rotation, drive shaft rotating disk 101 On block 103 can go to the position relative with proximity switch 32.
When the block 103 of drive shaft rotating disk 101 goes to the position relative with proximity switch 32, block 103 is located adjacent to In the induction region of switch 32, proximity switch 32 exports the first on-off model；When other positions of drive shaft rotating disk 101 go to During relative with proximity switch 32 position, object, proximity switch 32 is not had to export second in the induction region of proximity switch 32 On-off model.
Controller 40 is connected with rotation-speed measuring device 20 and proximity switch 32 respectively.Controller 40 controls rotation-speed measuring device 20 detect the rotating speed of drive shaft 10 according to prefixed time interval, calculate drive shaft 10 according to the rotating speed of drive shaft 10 and preset described The angle value rotated in time interval, the angle value that each calculated drive shaft 10 is rotated within a preset time interval by Individual carrying out cumulative obtains accumulated value.Further, controller 40, will when receiving the first on-off model of proximity switch 32 output Accumulated value resets.Controller 40 using accumulated value as the azimuth of wind wheel.
Measurement system shown in Fig. 7 of the present invention, the block on drive shaft rotating disk that will be sheathed on drive shaft periphery is as driving The fixed point of moving axis, utilizes whether the fixed point of the proximity switch detection drive shaft being arranged at precalculated position goes to precalculated position, Thus trigger controller carries out the clear operation of accumulated value, to realize accurate measurement azimuthal to wind wheel.
Need exist for explanation, in the drive shaft rotating disk 101 shown in Fig. 5, Fig. 6 and Fig. 7 of the present invention and prior art The structure of the metal rotary disk being arranged at slow-speed shaft is different.Drive shaft rotating disk 101 shown in Fig. 5, Fig. 6 and Fig. 7 of the present invention is only Need to arrange a fixed point (hole, location or block), therefore the diameter of drive shaft rotating disk 101 is the least, accordingly, is driving In axle 10 rotary course, the load that drive shaft rotating disk 101 produces is the least.With prior art needs equidistant offer large number of orifices and The metal rotary disk that diameter is the biggest is different.
See the structure that Fig. 8, Fig. 8 are another kind of wind turbines rotor azimuthal measurement system disclosed by the invention Figure.Wind-driven generator includes wind wheel (not shown), electromotor (not shown) and drive shaft 10.For direct-driving type wind-force For electromotor, drive shaft 10 is main shaft；For double feed wind power generator, drive shaft 10 is the low speed in drive shaft system Axle.Measurement system includes rotation-speed measuring device 20, zero detector and controller 40.
Wherein:
The periphery of drive shaft 10 is provided with block 103, and this block 103 is as the fixed point of drive shaft 10.In drive shaft 10 In rotary course, block 103 rotates with.In enforcement, fixing band 104 can be utilized to be fixed by block 103 as shown in Figure 8 Periphery in drive shaft 10.It is of course also possible to adopt the periphery that in other ways block 103 is fixed on drive shaft 10.
Rotation-speed measuring device 20 is for detecting the rotating speed of drive shaft 10.Rotation-speed measuring device 20 can be Hall revolution speed sensing Device or magnetic power rotation speed sensor.
Zero detector is specially arranged at the proximity switch 32 in precalculated position.This precalculated position can be considered 0 ° of wind wheel Position.In enforcement, this precalculated position may be located at surface or the underface of the centrage of drive shaft 10.Revolve in drive shaft 10 During Zhuaning, the block 103 being arranged at drive shaft 10 periphery can go to the position relative with proximity switch 32.
When block 103 goes to the position relative with proximity switch 32, block 103 is located adjacent to switch the induction region of 32 In, proximity switch 32 exports the first on-off model；After block 103 turns over the position relative with proximity switch 32, connecing Object, proximity switch 32 is not had to export second switch amount signal in the induction region of nearly switch 32.
Controller 40 is connected with rotation-speed measuring device 20 and proximity switch 32 respectively.Controller 40 controls rotation-speed measuring device 20 detect the rotating speed of drive shaft 10 according to prefixed time interval, calculate drive shaft 10 according to the rotating speed of drive shaft 10 and preset described The angle value rotated in time interval, the angle value that each calculated drive shaft 10 is rotated within a preset time interval by Individual carrying out cumulative obtains accumulated value.Further, controller 40, will when receiving the first on-off model of proximity switch 32 output Accumulated value resets.Controller 40 using accumulated value as the azimuth of wind wheel.
Measurement system shown in Fig. 8 of the present invention, using the block that is arranged at drive shaft rotating disk periphery as the demarcation of drive shaft Point, utilizes whether the fixed point of the proximity switch detection drive shaft being arranged at precalculated position goes to precalculated position, thus triggers control Device processed carries out the clear operation of accumulated value, to realize accurate measurement azimuthal to wind wheel.
It should be noted that in the measurement system shown in Fig. 5 to Fig. 8, rotation-speed measuring device 20 can also use slip ring Encoder.Below in conjunction with Fig. 9 and Figure 10, the installation site of slip ring encoder is illustrated.
Seeing Fig. 9, Fig. 9 is another kind of direct-driving type wind power generation machine wind wheel azimuthal measurement system disclosed by the invention Front view, Figure 10 is the right view of Fig. 9.Direct-driving type wind power generation machine includes that wind wheel (not shown), electromotor (do not show in figure Go out), main shaft 10a, wind wheel hub 50 and slip ring 60.Measurement system includes rotation-speed measuring device, zero detector and controller 40。
Wherein:
Wind wheel hub 50 is connected with main shaft 10a, and when blade rotates, wind wheel hub 50 drives main shaft 10a to rotate, main shaft 10a drives electromotor to rotate.The equipment being internally provided with blade pitch device of wind wheel hub 50 and device, such as pitch variable bearings, change Oar motor, reductor and pitch control cabinet.
Main shaft 10a is annular main shaft, say, that main shaft 10a is hollow structure.The periphery of main shaft 10a is provided with block 103, this block 103 is as the fixed point of main shaft 10a.In main shaft 10a rotary course, block 103 rotates with.
Slip ring 60 is arranged at the inside of main shaft 10a.Slip ring 60 is within connecting the cable in wind wheel hub 50 and cabin Cable.In direct-driving type wind power generation machine running, wind wheel hub 50 is to rotate, and the cable within wind wheel hub 50 also can Rotate with, and the cable in cabin is fixing, it is therefore desirable to connect the cable in wind wheel hub 50 and machine by slip ring 60 Cable in cabin, it is ensured that cable is not distorted.
Rotation-speed measuring device is specially slip ring encoder 21, and slip ring encoder 21 is arranged at the inside of slip ring 60, and position On the rotation axis of slip ring 60.Slip ring encoder 21 is for detecting the rotating speed of main shaft 10a.
Zero detector is specially arranged at the proximity switch 32 in precalculated position.This precalculated position can be considered 0 ° of wind wheel Position.In enforcement, this precalculated position may be located at surface or the underface of the centrage of main shaft 10a.Rotate at main shaft 10a During, the block 103 being arranged at main shaft 10a periphery can go to the position relative with proximity switch 32.
When block 103 goes to the position relative with proximity switch 32, block 103 is located adjacent to switch the induction region of 32 In, proximity switch 32 exports the first on-off model；After block 103 turns over the position relative with proximity switch 32, connecing Object, proximity switch 32 is not had to export second switch amount signal in the induction region of nearly switch 32.
Controller 40 is connected with slip ring encoder 21 and proximity switch 32 respectively.Controller 40 controls slip ring encoder 21 and presses According to the rotating speed of prefixed time interval detection main shaft 10a, calculate main shaft 10a between described Preset Time according to the rotating speed of main shaft 10a Every the angle value of interior rotation, the angle value rotated each calculated main shaft 10a within a preset time interval is carried out one by one Add up and obtain accumulated value.Further, controller 40 is when receiving the first on-off model of proximity switch 32 output, by accumulated value Reset.Controller 40 using accumulated value as the azimuth of wind wheel.
Measurement system shown in Fig. 9 and Figure 10 of the present invention is applied to direct-driving type wind power generation machine, utilize slip ring encoder by According to the rotating speed of prefixed time interval detection main shaft, using the block that is arranged at main shaft periphery as the fixed point of main shaft, utilize and arrange Whether the fixed point of the proximity switch detection main shaft in precalculated position goes to precalculated position, thus trigger controller carries out accumulated value Clear operation, to realize accurate measurement azimuthal to direct-driving type wind power generation machine wind wheel.
Seeing Figure 11, Figure 11 is another kind of double feed wind power generator wind wheel azimuthal measurement system disclosed by the invention Structure chart.Double feed wind power generator includes wind wheel (not shown), electromotor (not shown), slow-speed shaft 10b, tooth Roller box 70 and high speed shaft 80.Slow-speed shaft 10b is connected with wind wheel, and high speed shaft 80 is connected with electromotor, and gear-box 70 is used for connecting low Speed axle 10b and high speed shaft 80, the gear ratio of gear-box refers to: the ratio of the rotating speed of the rotating speed of high speed shaft 80 and slow-speed shaft 10b.Survey Amount system includes rotation-speed measuring device 20, zero detector 30 and controller 40.
Wherein:
Rotation-speed measuring device 20 is for detecting the rotating speed of high speed shaft 80.
Zero detector 30, when the fixed point of slow-speed shaft 10b rotates to precalculated position, exports the first on-off model. This precalculated position can be considered 0 ° of position of wind wheel.In enforcement, this precalculated position may be located at just going up of the centrage of slow-speed shaft 10b Side or underface.
Controller 40 is connected with rotation-speed measuring device 20 and zero detector 30 respectively.Controller 40 controls tachometric survey Device 20 is according to the rotating speed of prefixed time interval detection high speed shaft 80, according to rotating speed and the transmission of gear-box 70 of high speed shaft 80 Than calculating the angle value that slow-speed shaft 10b rotates in described prefixed time interval, to each calculated slow-speed shaft 10b in advance If the angle value rotated in time interval carries out adding up obtaining accumulated value one by one.Further, controller 40 is receiving zero testing During the first on-off model that device 30 exports, accumulated value is reset.Controller 40 using accumulated value as the azimuth of wind wheel.
Needing exist for explanation, controller 40 controls rotation-speed measuring device 20 and carries out the prefixed time interval of Rotating speed measring Can be variable time interval, namely controller 40 controls rotation-speed measuring device 20 according to variable time interval detection height The rotating speed of speed axle 80.As a kind of preferred version, controller 40 controls rotation-speed measuring device 20 when carrying out Rotating speed measring default Between be spaced apart fixed time interval, namely controller 40 controls rotation-speed measuring device 20 and periodically detects high speed shaft 80 Rotating speed.
Below in conjunction with example, the measurement system shown in Figure 11 of the present invention is illustrated.
In double feed wind power generator running, the blade of double feed wind power generator is according to spy under the action of the forces of the wind Fixed direction rotates, and paddle belt wind symptom wheel rotates, and wind wheel drives slow-speed shaft 10b to rotate, and slow-speed shaft 10b driven gear case 70 revolves Turning, gear-box 70 drives high speed shaft 80 to rotate, and high speed shaft 80 drives electromotor to rotate.
Controller 40 controls rotation-speed measuring device 20 and is periodically detected the rotating speed of high speed shaft 80 according to the time interval of 20ms, Namely controller 40 controls the rotating speed of rotation-speed measuring device 20 every 20ms high speed shaft 80 of detection.Controller 40 is according to every time The rotating speed of the high speed shaft 80 detected and the gear ratio N of gear-box 70 calculate what slow-speed shaft 10b rotated in the 20ms in past Angle value.Concrete: assume that rotation-speed measuring device 20 is n rpm at the rotating speed that the t1 moment detects, then slow-speed shaft 10b exists The angle rotated in 20ms before the t1 moment is n*360/60/50/N.Controller 40 is by each calculated slow-speed shaft 10b The angle value rotated within a preset time interval adds up one by one, and the accumulated value obtained is as the azimuth of wind wheel.
Needing exist for explanation, wind wheel and the rotating speed of slow-speed shaft 10b in double feed wind power generator are identical, because of The angle value that each calculated slow-speed shaft 10b is rotated by this controller 40 within a preset time interval is cumulative one by one to be obtained Accumulated value, can be as the azimuth of wind wheel.
It addition, when zero detector 20 exports the first on-off model, show that the fixed point of slow-speed shaft 10b rotates extremely Precalculated position, say, that wind wheel has been rotated through a circle, and now, accumulated value is reset (namely by the side of wind wheel by controller 40 Parallactic angle resets).Afterwards, when controller 40 is calculated the angle value that slow-speed shaft 10b rotates within a preset time interval again, Add up on the basis of 0 °.By the azimuth of wind wheel being carried out when the fixed point of slow-speed shaft 10b rotates to precalculated position Reset, cumulative errors can be eliminated.It is to say, wind wheel often turns over a circle, controller 40 just carries out one to the azimuth of wind wheel Secondary calibration, in order to eliminate cumulative errors.
Double feed wind power generator wind wheel azimuthal measurement system that the present invention is disclosed above, utilizes rotation-speed measuring device According to the rotating speed of prefixed time interval detection high speed shaft, controller (utilizes rotating speed and the tooth of high speed shaft according to the rotating speed of slow-speed shaft The gear ratio calculation of roller box obtains) determine the angle value that slow-speed shaft rotates in this prefixed time interval, to being calculated every time The angle value that rotates within a preset time interval of slow-speed shaft add up one by one, using accumulated value as the azimuth of wind wheel.And And, zero detector exports the first on-off model when the fixed point of slow-speed shaft rotates to precalculated position, and controller is connecing When receiving the first on-off model, accumulated value is reset, namely the azimuth of wind wheel is reset.
Double feed wind power generator wind wheel disclosed by the invention azimuthal measurement system, utilizes rotating speed and the tooth of high speed shaft The rotating speed of the gear ratio calculation slow-speed shaft of roller box, calculates the azimuth of wind wheel according to the rotating speed of slow-speed shaft, and for high speed shaft Rotating speed measring be the metal rotary disk that need not arrange major diameter on high speed shaft, measurement system the most disclosed by the invention without Major diameter metal rotating disk need to be set and just can realize measurement azimuthal to wind wheel；Meanwhile, measurement system disclosed by the invention, The azimuth of current time wind wheel can be calculated every time after the rotating speed of high speed shaft being detected, there is preferable real-time, and The azimuthal precision of calculated wind wheel is higher, have preferable seriality, does not haves staged saltus step；It addition, control The azimuth of wind wheel, after wind wheel turns over a circle, is reset by device, it is possible to eliminate cumulative errors.
As a kind of preferred version, in the measurement system shown in Figure 11, controller 40 is additionally operable to: exceed at accumulated value When 360 °, determine that zero detector 30 breaks down, by accumulated value to 360 ° of remainders, using the remainder that obtains as the side of wind wheel Parallactic angle.
If zero detector 30 is up, then when the fixed point of slow-speed shaft 10b rotates to precalculated position Time, zero detector 30 can export the first on-off model, and controller 40 receives accumulated value after the first on-off model Resetting, therefore accumulated value is not over 360 °.When the accumulated value that controller 40 obtains is more than 360 °, i.e. can determine that zero-bit Detection device 30 breaks down, in this case, controller 40 by accumulated value to 360 ° of remainders, using the remainder that obtains as wind The azimuth of wheel.
Based on this preferred version, when zero detector 30 breaks down, controller 40 can detect this event in time Barrier, and in a period of time after zero detector 30 breaks down, controller 40 remains able to accurately detect wind wheel Azimuth.
In the measurement system shown in Figure 11 of the present invention, rotation-speed measuring device 20 can be Hall revolution speed transducer, magnetoelectricity Speed probe or slip ring encoder, zero detector 30 can also use various structures to realize simultaneously.
As a kind of embodiment, the periphery of slow-speed shaft 10b is arranged with slow-speed shaft rotating disk, and this slow-speed shaft rotating disk is provided with inspection Gaging hole, this detection hole is as the fixed point of slow-speed shaft 10b.Zero detector 30 is specially arranged at the light in precalculated position and establishes by cable Close.This precalculated position can be considered 0 ° of position of wind wheel.In enforcement, this precalculated position may be located at the centrage of slow-speed shaft 10b Surface or underface.In slow-speed shaft 10b rotary course, slow-speed shaft rotating disk concomitant rotation, detection hole can go to and light The position that electric switch is relative.Drive shaft rotating disk 101 in slow-speed shaft rotating disk and the structure of photoswitch and installation site, with Fig. 5 Similar with the structure of photoswitch 31 and installation site, refer to Fig. 5.
When the detection hole of slow-speed shaft rotating disk goes to the position relative with photoswitch, the light beam that photoswitch is launched will not Being blocked or reflect, photoswitch exports the first on-off model, when other positions of slow-speed shaft rotating disk go to and photoswitch During relative position, the light beam that photoswitch is launched is blocked by slow-speed shaft rotating disk or reflects, photoswitch output second switch amount Signal.
As another embodiment, the periphery of slow-speed shaft 10b is arranged with slow-speed shaft rotating disk, and this slow-speed shaft rotating disk is provided with Detection hole, this detection hole is as the fixed point of slow-speed shaft 10b.Zero detector 30 is specially arranged at the close of precalculated position Switch.This precalculated position can be considered 0 ° of position of wind wheel.In enforcement, this precalculated position may be located at the centrage of slow-speed shaft 10b Surface or underface.In slow-speed shaft 10b rotary course, slow-speed shaft rotating disk concomitant rotation, detection hole can go to The position that proximity switch is relative.Drive shaft rotating disk in slow-speed shaft rotating disk and the structure of proximity switch and installation site, with Fig. 6 101 is similar with the structure of proximity switch 32 and installation site, refers to Fig. 6.
When the detection hole of slow-speed shaft rotating disk goes to the position relative with proximity switch, in the induction region of proximity switch Object, proximity switch is not had to export the first on-off model；When other positions of slow-speed shaft rotating disk go to relative with proximity switch Position time, in the induction region of proximity switch, have an object, proximity switch output second switch amount signal.
As another embodiment, the periphery of slow-speed shaft 10b is arranged with slow-speed shaft rotating disk, the first side of slow-speed shaft rotating disk Face is provided with block, and this block is the fixed point of slow-speed shaft 10b.Zero detector is particularly as follows: be arranged at and slow-speed shaft rotating disk The proximity switch in relative precalculated position, the first side.This precalculated position can be considered 0 ° of position of wind wheel.In enforcement, this makes a reservation for Position may be located at surface or the underface of the centrage of slow-speed shaft 10b.In slow-speed shaft 10b rotary course, slow-speed shaft Rotating disk concomitant rotation, the block on slow-speed shaft rotating disk can go to the position relative with proximity switch.Slow-speed shaft rotating disk and close Drive shaft rotating disk 101 and the structure of proximity switch 32 and installation site phase in the structure of switch and installation site, with Fig. 7 Seemingly, Fig. 7 is referred to.
When the block of slow-speed shaft rotating disk goes to the position relative with proximity switch, block is located adjacent to the induction zone of switch In territory, proximity switch exports the first on-off model；When other positions of slow-speed shaft rotating disk go to the position relative with proximity switch When putting, in the induction region of proximity switch, there is no object, proximity switch output second switch amount signal.
As another embodiment, the periphery of slow-speed shaft 10b is provided with block, and this block is as the mark of slow-speed shaft 10b Fixed point.Zero detector is specially arranged at the proximity switch in precalculated position, is referred to the installation of proximity switch 32 in Fig. 8 Position.This precalculated position can be considered 0 ° of position of wind wheel.In enforcement, this precalculated position may be located at the centrage of slow-speed shaft 10b Surface or underface.In slow-speed shaft 10b rotary course, be arranged at the block of slow-speed shaft 10b periphery can go to The position that proximity switch is relative.
When block goes to the position relative with proximity switch, block is located adjacent in the induction region of switch, close to opening Close output the first on-off model；After block turns over the position relative with proximity switch, at the induction region of proximity switch Inside there is no object, proximity switch output second switch amount signal.
Seeing Figure 12, Figure 12 is another kind of double feed wind power generator wind wheel azimuthal measurement system disclosed by the invention Structure chart.Double feed wind power generator includes wind wheel (not shown), electromotor (not shown), slow-speed shaft 10b, tooth Roller box 70 and high speed shaft 80.Slow-speed shaft 10b is connected with wind wheel, and high speed shaft 80 is connected with electromotor, and gear-box 70 is used for connecting low Speed axle 10b and high speed shaft 80, the gear ratio of gear-box refers to: the ratio of the rotating speed of the rotating speed of high speed shaft 80 and slow-speed shaft 10b.Survey Amount system includes rotation-speed measuring device 20, zero detector 30 and controller 40.
Wherein:
Rotation-speed measuring device 20 is for detecting the rotating speed of high speed shaft 80.
Zero detector 30, when the fixed point of high speed shaft 80 rotates to precalculated position, exports the first on-off model. In enforcement, this precalculated position may be located at surface or the underface of the centrage of high speed shaft 80.
Controller 40 is connected with rotation-speed measuring device 20 and zero detector 30 respectively.Controller 40 controls tachometric survey Device 20 is according to the rotating speed of prefixed time interval detection high speed shaft 80, according to rotating speed and the transmission of gear-box 70 of high speed shaft 80 Than calculating the angle value that slow-speed shaft 10b rotates within a preset time interval, to each calculated slow-speed shaft 10b when default Between the angle value that rotates in interval carry out one by one cumulative obtaining accumulated value.Further, zero detector 30 is exported by controller 40 The number of times of the first on-off model counts, when the integer part of the gear ratio that count value reaches gear-box 70, and will be cumulative Value is verified as the first angle, afterwards when accumulated value reaches 360 °, accumulated value and count value is reset.Controller 40 is by accumulated value Azimuth as wind wheel.Wherein, the first angle be 360 ° of-Y/N, N be the gear ratio of gear-box, Y is the gear ratio of gear-box Fractional part be multiplied by 360 °.
Needing exist for explanation, controller 40 controls rotation-speed measuring device 20 and carries out the prefixed time interval of Rotating speed measring Can be variable time interval, namely controller 40 controls rotation-speed measuring device 20 according to variable time interval detection height The rotating speed of speed axle 80.As a kind of preferred version, controller 40 controls rotation-speed measuring device 20 when carrying out Rotating speed measring default Between be spaced apart fixed time interval, namely controller 40 controls rotation-speed measuring device 20 and periodically detects high speed shaft 80 Rotating speed.
Below in conjunction with example, the measurement system shown in Figure 12 of the present invention is illustrated.
In double feed wind power generator running, the blade of double feed wind power generator is according to spy under the action of the forces of the wind Fixed direction rotates, and paddle belt wind symptom wheel rotates, and wind wheel drives slow-speed shaft 10b to rotate, and slow-speed shaft 10b driven gear case 70 revolves Turning, gear-box 70 drives high speed shaft 80 to rotate, and high speed shaft 80 drives electromotor to rotate.
Controller 40 controls rotation-speed measuring device 20 and is periodically detected the rotating speed of high speed shaft 80 according to the time interval of 20ms, Namely controller 40 controls the rotating speed of rotation-speed measuring device 20 every 20ms high speed shaft 80 of detection.Controller 40 is according to every time The rotating speed of the high speed shaft 80 detected and the gear ratio N of gear-box calculate the angle that slow-speed shaft 10b rotates in the 20ms in past Angle value.Concrete: assume that rotation-speed measuring device 20 is n rpm at the rotating speed that the t1 moment detects, then slow-speed shaft 10b is at t1 The angle rotated in 20ms before moment is n*360/60/50/N.Each calculated slow-speed shaft 10b is existed by controller 40 The angle value rotated in prefixed time interval adds up one by one, and the accumulated value obtained is as the azimuth of wind wheel.
It addition, when zero detector 20 exports the first on-off model, show that the fixed point of high speed shaft 80 rotates extremely Precalculated position, say, that high speed shaft 80 has been rotated through a circle.The gear ratio of gear-box 70 is N, when the circle that high speed shaft 80 turns over During the gear ratio N that number is gear-box 70, slow-speed shaft 10b turns over a circle.
In double feed wind power generator running, controller 40 exports the first switching value letter to zero detector 30 Number number of times count.If the gear ratio of gear-box 70 is not integer, then when count value reaches the transmission of gear-box 70 During the integer part of ratio, show that slow-speed shaft 10b i.e. will be turned over a circle but the most not to a circle, (Y is tooth when high speed shaft 80 turns over Y ° again The fractional part of the gear ratio of roller box 70 is multiplied by 360 °) time, slow-speed shaft 10b turns over a circle.Therefore, controller 40 reaches in count value During to the integer part of the gear ratio of gear-box 70, accumulated value is verified as the first angle (360 ° of-Y/N), namely by wind wheel Azimuth be verified as the first angle, afterwards when accumulated value reaches 360 °, by accumulated value reset, simultaneously by count value reset.
Such as, the gear ratio of gear-box 70 is 110.2, say, that slow-speed shaft 10b often turns over a circle, and high speed shaft 80 turns over 110.2 circle.The number of times that controller 40 exports the first on-off model to zero detector 20 counts.When count value reaches When 110, show that slow-speed shaft 10b the poorest 0.2*360 °/110.2 just turns over a circle, therefore by accumulated value (the namely orientation of wind wheel Angle) it is verified as (360 °-0.2*360 °/110.2), when the newly-increased part of accumulated value reaches 0.2*360 °/110.2 afterwards (namely When accumulated value reaches 360 °), accumulated value and count value are reset, to eliminate cumulative errors by controller 40.It is to say, wind wheel is every Turning over a circle, controller 40 just carries out primary calibration to the azimuth of wind wheel, in order to eliminate cumulative errors.
If it should be noted that the gear ratio of gear-box 70 is integer, then controller 40 reaches gear in count value During the gear ratio of case 70, show that slow-speed shaft 10b turns over a circle.Now, accumulated value is verified as the first angle, essence by controller 40 Being exactly that accumulated value is verified as 360 °, accumulated value and count value are reset by controller 40 afterwards, eliminate cumulative errors.
Double feed wind power generator wind wheel azimuthal measurement system that the present invention is disclosed above, utilizes rotation-speed measuring device According to the rotating speed of prefixed time interval detection high speed shaft, controller (utilizes rotating speed and the tooth of high speed shaft according to the rotating speed of slow-speed shaft The gear ratio calculation of roller box obtains) determine the angle value that slow-speed shaft rotates in this prefixed time interval, to being calculated every time The angle value that rotates within a preset time interval of slow-speed shaft add up one by one, using accumulated value as the azimuth of wind wheel.And And, zero detector exports the first on-off model when the fixed point of high speed shaft rotates to precalculated position, and controller is to zero Level detecting apparatus exports the number of times of the first on-off model and counts, when count value reaches the integer portion of the gear ratio of gear-box Accumulated value is verified as the first angle by timesharing, afterwards when accumulated value reaches 360 °, accumulated value and count value is reset, eliminates tired Meter error.
Double feed wind power generator wind wheel disclosed by the invention azimuthal measurement system, utilizes rotating speed and the tooth of high speed shaft The rotating speed of the gear ratio calculation slow-speed shaft of roller box, calculates the azimuth of wind wheel according to the rotating speed of slow-speed shaft, and for high speed shaft Rotating speed measring be the metal rotary disk that need not arrange major diameter on high speed shaft, measurement system the most disclosed by the invention without Major diameter metal rotating disk need to be set and just can realize measurement azimuthal to wind wheel；Meanwhile, measurement system disclosed by the invention, The azimuth of current time wind wheel can be calculated every time after the rotating speed of high speed shaft being detected, there is preferable real-time, and The azimuthal precision of calculated wind wheel is higher, have preferable seriality, does not haves staged saltus step；It addition, control The azimuth of wind wheel, after wind wheel turns over a circle, is reset by device, it is possible to eliminate cumulative errors.
As a kind of preferred version, in the measurement system shown in Figure 12, controller 40 is additionally operable to: exceed at accumulated value When 360 °, determine that zero detector 30 breaks down, by accumulated value to 360 ° of remainders, using the remainder that obtains as the side of wind wheel Parallactic angle.
If zero detector 30 is up, then when the fixed point of high speed shaft 80 rotates to precalculated position Time, zero detector 30 can export the first on-off model, and accumulated value is not over 360 °.When controller 40 obtains When accumulated value is more than 360 °, i.e. can determine that zero detector 30 breaks down, in this case, controller 40 is by accumulated value To 360 ° of remainders, using the remainder that obtains as the azimuth of wind wheel.
Based on this preferred version, when zero detector 30 breaks down, controller 40 can detect this event in time Barrier, and in a period of time after zero detector 30 breaks down, controller 40 remains able to accurately detect wind wheel Azimuth.
In the measurement system shown in Figure 12 of the present invention, rotation-speed measuring device 20 can be Hall revolution speed transducer, magnetoelectricity Speed probe or slip ring encoder, zero detector 30 can also use various structures to realize simultaneously, below in conjunction with attached Figure 13 illustrates to accompanying drawing 16.
Seeing Figure 13, Figure 13 is another kind of double feed wind power generator wind wheel azimuthal measurement system disclosed by the invention Structure chart.Double feed wind power generator includes wind wheel (not shown), electromotor (not shown), slow-speed shaft 10b, tooth Roller box 70 and high speed shaft 80.Slow-speed shaft 10b is connected with wind wheel, and high speed shaft 80 is connected with electromotor, and gear-box 70 is used for connecting low Speed axle 10b and high speed shaft 80.Measurement system includes rotation-speed measuring device 20, zero detector and controller 40.
Wherein:
The periphery of high speed shaft 80 is arranged with high speed shaft rotating disk 801, and this high speed shaft rotating disk 801 is provided with detection hole 802, this inspection Gaging hole 802 is the fixed point of high speed shaft 80.
Rotation-speed measuring device 20 is for detecting the rotating speed of high speed shaft 80.Rotation-speed measuring device 20 can be Hall revolution speed sensing Device or magnetic power rotation speed sensor.
Zero detector is specially arranged at the photoswitch 31 in precalculated position.In enforcement, this precalculated position can position The surface of centrage or underface in high speed shaft 80.In high speed shaft 80 rotary course, high speed shaft rotating disk 801 turns therewith Dynamic, detection hole 802 can go to the position relative with photoswitch 31.
When the detection hole 802 of high speed shaft rotating disk 801 goes to the position relative with photoswitch 31, photoswitch 31 is launched Light beam will not be blocked or reflect, photoswitch 31 exports the first on-off model, when other positions of high speed shaft rotating disk 801 When going to the position relative with photoswitch 31, the light beam that photoswitch 31 is launched is blocked by high speed shaft rotating disk 801 or reflects, light Electric switch 31 exports second switch amount signal.
Controller 40 is connected with rotation-speed measuring device 20 and photoswitch 31 respectively.Controller 40 controls rotation-speed measuring device 20 detect the rotating speed of high speed shaft 80 according to prefixed time interval, according to rotating speed and the gear ratio meter of gear-box 70 of high speed shaft 80 Calculate the angle value that slow-speed shaft 10b rotates within a preset time interval, to each calculated slow-speed shaft 10b between Preset Time Angle value every interior rotation carries out adding up obtaining accumulated value one by one.Further, controller 40 exports the first switch to photoswitch 31 The number of times of amount signal counts, and when the integer part of the gear ratio that count value reaches gear-box 70, is verified as by accumulated value First angle, afterwards when accumulated value reaches 360 °, resets accumulated value and count value, controller 40 using accumulated value as wind wheel Azimuth.Wherein, the first angle be 360 ° of-Y/N, N be the gear ratio of gear-box, Y is the fractional part of the gear ratio of gear-box Take separately with 360 °.
Here emphatically fixed point and the photoswitch 31 of high speed shaft 80 is illustrated, the specific works mistake of controller 40 Journey, refers to description above.
Measurement system shown in Figure 13 of the present invention, the detection hole on high speed shaft rotating disk that high speed shaft periphery will be sheathed on as The fixed point of high speed shaft, utilizes whether the fixed point of the photoswitch detection high speed shaft being arranged at precalculated position goes to pre-determined bit Put, to realize accurate measurement azimuthal to wind wheel.
Seeing Figure 14, Figure 14 is another kind of double feed wind power generator wind wheel azimuthal measurement system disclosed by the invention Structure chart.Double feed wind power generator includes wind wheel (not shown), electromotor (not shown), slow-speed shaft 10b, tooth Roller box 70 and high speed shaft 80.Slow-speed shaft 10b is connected with wind wheel, and high speed shaft 80 is connected with electromotor, and gear-box 70 is used for connecting low Speed axle 10b and high speed shaft 80.Measurement system includes rotation-speed measuring device 20, zero detector and controller 40.
Wherein:
The periphery of high speed shaft 80 is arranged with high speed shaft rotating disk 801, and this high speed shaft rotating disk 801 is provided with detection hole 802, this inspection Gaging hole 802 is the fixed point of high speed shaft 80.
Rotation-speed measuring device 20 is for detecting the rotating speed of high speed shaft 80.Rotation-speed measuring device 20 can be Hall revolution speed sensing Device or magnetic power rotation speed sensor.
Zero detector is specially arranged at the proximity switch 32 in precalculated position.In enforcement, this precalculated position can position The surface of centrage or underface in slow-speed shaft 10b.In high speed shaft 80 rotary course, high speed shaft rotating disk 801 is therewith Rotating, detection hole 802 can go to the position relative with proximity switch 32.
When the detection hole 802 of high speed shaft rotating disk 801 goes to the position relative with proximity switch 32, at proximity switch 32 Object, proximity switch 32 is not had to export the first on-off model in induction region；When other positions of high speed shaft rotating disk 801 go to During relative with proximity switch 32 position, there are object, proximity switch 32 to export second in the induction region of proximity switch 32 and open Pass amount signal.
Controller 40 is connected with rotation-speed measuring device 20 and proximity switch 32 respectively.Controller 40 controls rotation-speed measuring device 20 detect the rotating speed of high speed shaft 80 according to prefixed time interval, according to rotating speed and the gear ratio meter of gear-box 70 of high speed shaft 80 Calculate the angle value that slow-speed shaft 10b rotates within a preset time interval, to each calculated slow-speed shaft 10b between Preset Time Angle value every interior rotation carries out adding up obtaining accumulated value one by one.Further, controller 40 exports the first switch to proximity switch 32 The number of times of amount signal counts, and when the integer part of the gear ratio that count value reaches gear-box 70, is verified as by accumulated value First angle, afterwards when accumulated value reaches 360 °, resets accumulated value and count value, controller 40 using accumulated value as wind wheel Azimuth.Wherein, the first angle be 360 ° of-Y/N, N be the gear ratio of gear-box, Y is the fractional part of the gear ratio of gear-box Take separately with 360 °.
Here emphatically fixed point and the proximity switch 32 of high speed shaft 80 is illustrated, the specific works mistake of controller 40 Journey, refers to description above.
Measurement system shown in Figure 14 of the present invention, the detection hole on high speed shaft rotating disk that high speed shaft periphery will be sheathed on as The fixed point of high speed shaft, utilizes whether the fixed point of the proximity switch detection high speed shaft being arranged at precalculated position goes to pre-determined bit Put, to realize accurate measurement azimuthal to wind wheel.
Seeing Figure 15, Figure 15 is another kind of double feed wind power generator wind wheel azimuthal measurement system disclosed by the invention Structure chart.Double feed wind power generator includes wind wheel (not shown), electromotor (not shown), slow-speed shaft 10b, tooth Roller box 70 and high speed shaft 80.Slow-speed shaft 10b is connected with wind wheel, and high speed shaft 80 is connected with electromotor, and gear-box 70 is used for connecting low Speed axle 10b and high speed shaft 80.Measurement system includes rotation-speed measuring device 20, zero detector and controller 40.
Wherein:
The periphery of high speed shaft 80 is arranged with high speed shaft rotating disk 801, and the first side of this high speed shaft rotating disk 801 is provided with block 803, this block 803 is as the fixed point of high speed shaft 80.
Rotation-speed measuring device 20 is for detecting the rotating speed of high speed shaft 80.Rotation-speed measuring device 20 can be Hall revolution speed sensing Device or magnetic power rotation speed sensor.
Zero detector is particularly as follows: be arranged at connecing of the precalculated position relative with the first side of high speed shaft rotating disk 801 Nearly switch 32.In enforcement, this precalculated position may be located at surface or the underface of the centrage of slow-speed shaft 10b.At a high speed In axle 80 rotary course, high speed shaft rotating disk 801 concomitant rotation, the block 803 of high speed shaft rotating disk 801 can go to and proximity switch 32 relative positions.
When the block 803 of high speed shaft rotating disk 801 goes to the position relative with proximity switch 32, block 803 is located adjacent to In the induction region of switch 32, proximity switch 32 exports the first on-off model；When other positions of high speed shaft rotating disk 801 go to During relative with proximity switch 32 position, object, proximity switch 32 is not had to export second in the induction region of proximity switch 32 On-off model.
Controller 40 is connected with rotation-speed measuring device 20 and proximity switch 32 respectively.Controller 40 controls rotation-speed measuring device 20 detect the rotating speed of high speed shaft 80 according to prefixed time interval, according to rotating speed and the gear ratio meter of gear-box 70 of high speed shaft 80 Calculate the angle value that slow-speed shaft 10b rotates within a preset time interval, to each calculated slow-speed shaft 10b between Preset Time Angle value every interior rotation carries out adding up obtaining accumulated value one by one.Further, controller 40 exports the first switch to proximity switch 32 The number of times of amount signal counts, and when the integer part of the gear ratio that count value reaches gear-box 70, is verified as by accumulated value First angle, afterwards when accumulated value reaches 360 °, resets accumulated value and count value, controller 40 using accumulated value as wind wheel Azimuth.Wherein, the first angle be 360 ° of-Y/N, N be the gear ratio of gear-box, Y is the fractional part of the gear ratio of gear-box Take separately with 360 °.
Here emphatically fixed point and the proximity switch 32 of high speed shaft 80 is illustrated, the specific works mistake of controller 40 Journey, refers to description above.
Measurement system shown in Figure 15 of the present invention, the block on high speed shaft rotating disk that will be sheathed on high speed shaft periphery is as height The fixed point of speed axle, utilizes whether the fixed point of the proximity switch detection high speed shaft being arranged at precalculated position goes to precalculated position, To realize accurate measurement azimuthal to wind wheel.
Need exist for explanation, the high speed shaft rotating disk 801 shown in Figure 13, Figure 14 and Figure 15 of the present invention and prior art In be arranged at slow-speed shaft the structure of metal rotary disk be different.High speed shaft rotating disk shown in Figure 13, Figure 14 and Figure 15 of the present invention 801 only need to arrange a fixed point (hole, location or block), and therefore the diameter of high speed shaft rotating disk 801 is the least, accordingly, In high speed shaft 80 rotary course, the load that high speed shaft rotating disk 801 produces is the least.With prior art needs equidistant offer a large amount of Hole and the biggest metal rotary disk of diameter are different.
Seeing Figure 16, Figure 16 is another kind of double feed wind power generator wind wheel azimuthal measurement system disclosed by the invention Structure chart.Double feed wind power generator includes wind wheel (not shown), electromotor (not shown), slow-speed shaft 10b, tooth Roller box 70 and high speed shaft 80.Slow-speed shaft 10b is connected with wind wheel, and high speed shaft 80 is connected with electromotor, and gear-box 70 is used for connecting low Speed axle 10b and high speed shaft 80.Measurement system includes rotation-speed measuring device 20, zero detector and controller 40.
Wherein:
The periphery of high speed shaft 80 is provided with block 803, and this block 803 is as the fixed point of high speed shaft 80.At high speed shaft 80 In rotary course, block 803 rotates with.In enforcement, fixing band 804 can be utilized to be fixed by block 803 as shown in Figure 16 Periphery in high speed shaft 80.It is of course also possible to adopt the periphery that in other ways block 803 is fixed on high speed shaft 80.
Rotation-speed measuring device 20 is for detecting the rotating speed of high speed shaft 80.Rotation-speed measuring device 20 can be Hall revolution speed sensing Device or magnetic power rotation speed sensor.
Zero detector is specially arranged at the proximity switch 32 in precalculated position.In enforcement, this precalculated position can position The surface of centrage or underface in slow-speed shaft 10b.In high speed shaft 80 rotary course, it is arranged at high speed shaft 80 periphery Block 803 can go to the position relative with proximity switch 32.
When block 803 goes to the position relative with proximity switch 32, block 803 is located adjacent to switch the induction region of 32 In, proximity switch 32 exports the first on-off model；After block 803 turns over the position relative with proximity switch 32, connecing Object, proximity switch 32 is not had to export second switch amount signal in the induction region of nearly switch 32.
Controller 40 is connected with rotation-speed measuring device 20 and proximity switch 32 respectively.Controller 40 controls rotation-speed measuring device 20 detect the rotating speed of high speed shaft 80 according to prefixed time interval, according to rotating speed and the gear ratio meter of gear-box 70 of high speed shaft 80 Calculate the angle value that slow-speed shaft 10b rotates within a preset time interval, to each calculated slow-speed shaft 10b between Preset Time Angle value every interior rotation carries out adding up obtaining accumulated value one by one.Further, controller 40 exports the first switch to proximity switch 32 The number of times of amount signal counts, and when the integer part of the gear ratio that count value reaches gear-box 70, is verified as by accumulated value First angle, afterwards when accumulated value reaches 360 °, resets accumulated value and count value, controller 40 using accumulated value as wind wheel Azimuth.Wherein, the first angle be 360 ° of-Y/N, N be the gear ratio of gear-box, Y is the fractional part of the gear ratio of gear-box Take separately with 360 °.
Here emphatically fixed point and the proximity switch 32 of high speed shaft 80 is illustrated, the specific works mistake of controller 40 Journey, refers to description above.
Measurement system shown in Figure 16 of the present invention, using the block that is arranged at high speed shaft periphery as the fixed point of high speed shaft, Whether the fixed point utilizing the proximity switch detection high speed shaft being arranged at precalculated position goes to precalculated position, to realize wind wheel side The accurate measurement of parallactic angle.
Seeing Figure 17, Figure 17 is another kind of double feed wind power generator wind wheel azimuthal measurement system disclosed by the invention Structure chart.Double feed wind power generator includes wind wheel (not shown), electromotor (not shown), slow-speed shaft 10b, tooth Roller box 70 and high speed shaft 80.Slow-speed shaft 10b is connected with wind wheel, and high speed shaft 80 is connected with electromotor, and gear-box 70 is used for connecting low Speed axle 10b and high speed shaft 80.Measurement system includes rotation-speed measuring device 20, zero detector 30 and controller 40.
Wherein:
Rotation-speed measuring device 20 is for detecting the rotating speed of slow-speed shaft 10b.
Zero detector 30, when the fixed point of high speed shaft 80 rotates to precalculated position, exports the first on-off model. In enforcement, this precalculated position may be located at surface or the underface of the centrage of high speed shaft 80.
Controller 40 is connected with rotation-speed measuring device 20 and zero detector 30 respectively.Controller 40 controls tachometric survey Device 20, according to the rotating speed of prefixed time interval detection slow-speed shaft 10b, calculates slow-speed shaft 10b according to the rotating speed of slow-speed shaft 10b and exists The angle value rotated in prefixed time interval, the angle that each calculated slow-speed shaft 10b is rotated within a preset time interval Angle value carries out adding up obtaining accumulated value one by one.Further, controller 40 exports the first on-off model to zero detector 30 Number of times counts, and when the integer part of the gear ratio that count value reaches gear-box 70, accumulated value is verified as the first angle, Afterwards when accumulated value reaches 360 °, accumulated value and count value are reset, controller 40 using accumulated value as the azimuth of wind wheel. Wherein, the first angle be 360 ° of-Y/N, N be the gear ratio of gear-box, Y is that the fractional part of the gear ratio of gear-box is multiplied by 360°。
Needing exist for explanation, controller 40 controls rotation-speed measuring device 20 and carries out the prefixed time interval of Rotating speed measring Can be variable time interval, namely controller 40 control rotation-speed measuring device 20 according to variable time interval detection low The rotating speed of speed axle 10b.As a kind of preferred version, controller 40 controls rotation-speed measuring device 20 when carrying out Rotating speed measring default Between be spaced apart fixed time interval, namely controller 40 controls rotation-speed measuring device 20 and periodically detects slow-speed shaft 10b Rotating speed.
Below in conjunction with example, the measurement system shown in Figure 17 of the present invention is illustrated.
In double feed wind power generator running, the blade of double feed wind power generator is according to spy under the action of the forces of the wind Fixed direction rotates, and paddle belt wind symptom wheel rotates, and wind wheel drives slow-speed shaft 10b to rotate, and slow-speed shaft 10b driven gear case 70 revolves Turning, gear-box 70 drives high speed shaft 80 to rotate, and high speed shaft 80 drives electromotor to rotate.
Controller 40 controls rotation-speed measuring device 20 and is periodically detected turning of slow-speed shaft 10b according to the time interval of 20ms Speed, namely controller 40 controls the rotating speed of rotation-speed measuring device 20 every 20ms slow-speed shaft 10b of detection.Controller 40 basis The rotating speed of the slow-speed shaft 10b every time detected calculates the angle value that slow-speed shaft 10b rotates in the 20ms in past.Controller 40 will The angle value that each calculated slow-speed shaft 10b rotates within a preset time interval adds up one by one, the accumulated value obtained Azimuth as wind wheel.
It addition, when zero detector 20 exports the first on-off model, show that the fixed point of high speed shaft 80 rotates extremely Precalculated position, say, that high speed shaft 80 has been rotated through a circle.The gear ratio of gear-box 70 is N, when the circle that high speed shaft 80 turns over During the gear ratio N that number is gear-box 70, slow-speed shaft 10b turns over a circle.
In double feed wind power generator running, controller 40 exports the first switching value letter to zero detector 30 Number number of times count.If the gear ratio of gear-box 70 is not integer, then when count value reaches the transmission of gear-box 70 During the integer part of ratio, show that slow-speed shaft 10b i.e. will be turned over a circle but the most not to a circle, (Y is tooth when high speed shaft 80 turns over Y ° again The fractional part of the gear ratio of roller box 70 is multiplied by 360 °) time, slow-speed shaft 10b turns over a circle.Therefore, controller 40 reaches in count value During to the integer part of the gear ratio of gear-box 70, accumulated value is verified as the first angle (360 ° of-Y/N), namely by wind wheel Azimuth be verified as the first angle, afterwards when accumulated value reaches 360 °, by accumulated value reset, simultaneously by count value reset.
If it should be noted that the gear ratio of gear-box 70 is integer, then controller 40 reaches gear in count value During the gear ratio of case, show that slow-speed shaft 10b turns over a circle.Now, accumulated value is verified as the first angle by controller 40, and essence is just Being that accumulated value is verified as 360 °, accumulated value and count value can be reset by controller 40 afterwards, eliminate cumulative errors.
Double feed wind power generator wind wheel azimuthal measurement system that the present invention is disclosed above, utilizes rotation-speed measuring device According to the rotating speed of prefixed time interval detection slow-speed shaft, according to the rotating speed of slow-speed shaft, controller determines that slow-speed shaft is at this Preset Time The angle value rotated in interval, the angle value rotated each calculated slow-speed shaft within a preset time interval is carried out one by one Cumulative, using accumulated value as the azimuth of wind wheel.Further, zero detector rotates to precalculated position at the fixed point of high speed shaft Time export the first on-off model, controller exports the number of times of the first on-off model and counts zero detector, when During the integer part of the gear ratio that count value reaches gear-box, accumulated value is verified as the first angle, reaches at accumulated value afterwards When 360 °, accumulated value and count value are reset, eliminates cumulative errors.
Double feed wind power generator wind wheel disclosed by the invention azimuthal measurement system, counts according to the rotating speed of slow-speed shaft Calculate the azimuth of wind wheel, and the Rotating speed measring for slow-speed shaft is the metal rotary disk that need not arrange major diameter on slow-speed shaft , measurement system the most disclosed by the invention just can realize survey azimuthal to wind wheel without arranging major diameter metal rotating disk Amount；Meanwhile, measurement system disclosed by the invention, current time wind wheel can be calculated after rotating speed slow-speed shaft every time being detected Azimuth, there is preferable real-time, and the azimuthal precision of calculated wind wheel be higher, have the most continuously Property, do not have staged saltus step；It addition, controller is after wind wheel turns over a circle, the azimuth of wind wheel is reset, it is possible to disappear Except cumulative errors.
As a kind of preferred version, in the measurement system shown in Figure 17, controller 40 is additionally operable to: exceed at accumulated value When 360 °, determine that zero detector 30 breaks down, by accumulated value to 360 ° of remainders, using the remainder that obtains as the side of wind wheel Parallactic angle.
If zero detector 30 is up, then when the fixed point of high speed shaft 80 rotates to precalculated position Time, zero detector 30 can export the first on-off model, and therefore accumulated value is not over 360 °.When controller 40 obtains To accumulated value more than 360 ° time, i.e. can determine that zero detector 30 breaks down, in this case, controller 40 will be tired Value added to 360 ° of remainders, using the remainder that obtains as the azimuth of wind wheel.
Based on this preferred version, when zero detector 30 breaks down, controller 40 can detect this event in time Barrier, and in a period of time after zero detector 30 breaks down, controller 40 remains able to accurately detect wind wheel Azimuth.
In the measurement system shown in Figure 17 of the present invention, rotation-speed measuring device 20 can be Hall revolution speed transducer, magnetoelectricity Speed probe or slip ring encoder, zero detector 30 can also use various structures to realize simultaneously, specifically can be found in Accompanying drawing 13 to accompanying drawing 16 and related content above, be not discussed here.
Seeing Figure 18, Figure 18 is another kind of double feed wind power generator wind wheel azimuthal measurement system disclosed by the invention Structure chart.Double feed wind power generator includes wind wheel (not shown), electromotor (not shown), slow-speed shaft 10b, tooth Roller box 70 and high speed shaft 80.Slow-speed shaft 10b is connected with wind wheel, and high speed shaft 80 is connected with electromotor, and gear-box 70 is used for connecting low Speed axle 10b and high speed shaft 80.Measurement system includes rotation-speed measuring device 20, zero detector 30, resets detection device 90 and Controller 40.
Wherein:
Rotation-speed measuring device 20 is for detecting the rotating speed of high speed shaft 80.
Zero detector 30, when the fixed point of high speed shaft 80 rotates to precalculated position, exports the first on-off model. In enforcement, this precalculated position may be located at surface or the underface of the centrage of high speed shaft 80.
Reset detection device 90 to be arranged in the direction of rotation of high speed shaft 80 and postpone the relative to zero detector 30 The position of two angles, wherein, the second angle is that the fractional part of the gear ratio of gear-box 70 is multiplied by 360 °.Mark at high speed shaft 80 When fixed point goes to the position relative with resetting detection device 90, reset detection device 90 and export the first on-off model.With at a high speed As a example by axle 80 turns clockwise, the gear ratio of gear-box 70 is 110.2, reset detection device 90 and be arranged in the clockwise direction The position of 72 ° is postponed relative to zero detector 30.It is to say, the fixed point of high speed shaft 80 goes to and zero detector After 30 relative positions, when high speed shaft 80 turns over 72 ° again, the fixed point of high speed shaft 80 is relative with resetting detection device 90.
Controller 40 is connected with rotation-speed measuring device 20, zero detector 30 and clearing detection device 90 respectively.Control Device 40 controls the rotation-speed measuring device 20 rotating speed according to prefixed time interval detection high speed shaft 80, according to the rotating speed of high speed shaft 80 with And the angle value that the gear ratio calculation slow-speed shaft 10b of gear-box 70 rotates within a preset time interval, to the most calculated The angle value that slow-speed shaft 10b rotates within a preset time interval carries out adding up obtaining accumulated value one by one.Further, controller 40 is to zero Level detecting apparatus 30 exports the number of times of the first on-off model and counts, and reaches gear ratio whole of gear-box 70 in count value After fractional part, controller 40 is when receiving the first on-off model resetting detection device 90 output, by accumulated value and meter Numerical value resets.Controller 40 using accumulated value as the azimuth of wind wheel.Wherein, the first angle is 360 ° of-Y/N, and wherein, N is tooth The gear ratio of roller box, Y is that the fractional part of the gear ratio of gear-box is multiplied by 360 °.
Needing exist for explanation, controller 40 controls rotation-speed measuring device 20 and carries out the prefixed time interval of Rotating speed measring Can be variable time interval, namely controller 40 controls rotation-speed measuring device 20 according to variable time interval detection height The rotating speed of speed axle 80.As a kind of preferred version, controller 40 controls rotation-speed measuring device 20 when carrying out Rotating speed measring default Between be spaced apart fixed time interval, namely controller 40 controls rotation-speed measuring device 20 and periodically detects high speed shaft 80 Rotating speed.
Below in conjunction with example, the measurement system shown in Figure 18 of the present invention is illustrated.
In double feed wind power generator running, the blade of double feed wind power generator is according to spy under the action of the forces of the wind Fixed direction rotates, and paddle belt wind symptom wheel rotates, and wind wheel drives slow-speed shaft 10b to rotate, and slow-speed shaft 10b driven gear case 70 revolves Turning, gear-box 70 drives high speed shaft 80 to rotate, and high speed shaft 80 drives electromotor to rotate.
Controller 40 controls rotation-speed measuring device 20 and is periodically detected the rotating speed of high speed shaft 80 according to the time interval of 20ms. Controller 40 calculated slow-speed shaft 10b in the past according to the rotating speed of the high speed shaft 80 detected and the gear ratio N of gear-box every time 20ms in rotate angle value.Each calculated slow-speed shaft 10b is rotated by controller 40 within a preset time interval Angle value adds up one by one, and the accumulated value obtained is as the azimuth of wind wheel.
It addition, when zero detector 20 exports the first on-off model, show that the fixed point of high speed shaft 80 rotates extremely Precalculated position, say, that high speed shaft 80 has been rotated through a circle.The gear ratio of gear-box 70 is N, when the circle that high speed shaft 80 turns over During the gear ratio N that number is gear-box 70, slow-speed shaft 10b turns over a circle.
In double feed wind power generator running, controller 40 exports the first switching value letter to zero detector 30 Number number of times count.If the gear ratio of gear-box 70 is not integer, then when count value reaches the transmission of gear-box 70 During the integer part of ratio, show that slow-speed shaft 10b i.e. will be turned over a circle but the most not to a circle, (Y is tooth when high speed shaft 80 turns over Y ° again The fractional part of the gear ratio of roller box 70 is multiplied by 360 °) time, slow-speed shaft 10b turns over a circle.Therefore, controller 40 reaches in count value After the integer part of the gear ratio of gear-box 70, when receiving the first on-off model resetting detection device 90 output Time, show that high speed shaft 80 has turned over again Y °, namely slow-speed shaft 10b turns over a circle, now accumulated value and count value is reset, disappears Except cumulative errors.
Such as, the gear ratio of gear-box 70 is 110.2, say, that slow-speed shaft 10b often turns over a circle, and high speed shaft 80 turns over 110.2 circles, reset detection device 90 and postpone 72 ° relative to zero detector 30 in the direction of rotation of high speed shaft 10.Control The number of times that device 40 exports the first on-off model to zero detector 20 counts.When count value reaches 110, show low Speed axle 10b the poorest 0.2*360 °/110.2 just turns over a circle, afterwards, exports the first on-off model when resetting detection device 90 Time, show that high speed shaft 80 has turned over again 72 °, now slow-speed shaft 10b turns over a circle, and controller 40 is by accumulated value (namely wind wheel Azimuth) and count value reset, to eliminate cumulative errors.It is to say, wind wheel often turns over a circle, controller 40 is just to wind wheel Azimuth carry out primary calibration, in order to eliminate cumulative errors.
If it should be noted that the gear ratio of gear-box 70 is integer, then controller 40 reaches gear in count value During the gear ratio of case, show that slow-speed shaft 10b turns over a circle.Now, accumulated value and count value can be reset by controller 40, eliminate Cumulative errors.
Double feed wind power generator wind wheel azimuthal measurement system that the present invention is disclosed above, utilizes rotation-speed measuring device According to the rotating speed of prefixed time interval detection high speed shaft, controller (utilizes rotating speed and the tooth of high speed shaft according to the rotating speed of slow-speed shaft The gear ratio calculation of roller box obtains) determine the angle value that slow-speed shaft rotates in this prefixed time interval, to being calculated every time The angle value that rotates within a preset time interval of slow-speed shaft add up one by one, using accumulated value as the azimuth of wind wheel.And And, zero detector exports the first on-off model, when high speed shaft when the fixed point of high speed shaft rotates to precalculated position When fixed point rotates extremely relative with resetting detection device position, reset detection device and export the first on-off model, controller The number of times that zero detector exports the first on-off model counts, when count value reaches the whole of the gear ratio of gear-box After fractional part, when receiving the first on-off model resetting detection device output, accumulated value and count value are reset, disappears Except cumulative errors.
Double feed wind power generator wind wheel disclosed by the invention azimuthal measurement system, utilizes rotating speed and the tooth of high speed shaft The rotating speed of the gear ratio calculation slow-speed shaft of roller box, calculates the azimuth of wind wheel according to the rotating speed of slow-speed shaft, and for high speed shaft Rotating speed measring be the metal rotary disk that need not arrange major diameter on high speed shaft, measurement system the most disclosed by the invention without Major diameter metal rotating disk need to be set and just can realize measurement azimuthal to wind wheel；Meanwhile, measurement system disclosed by the invention, The azimuth of current time wind wheel can be calculated every time after the rotating speed of high speed shaft being detected, there is preferable real-time, and The azimuthal precision of calculated wind wheel is higher, have preferable seriality, does not haves staged saltus step；It addition, control The azimuth of wind wheel, after wind wheel turns over a circle, is reset by device, it is possible to eliminate cumulative errors.
In the measurement system shown in Figure 18, the fixed point of high speed shaft 80 is the block 803 being arranged at high speed shaft 80 periphery, Zero detector 30 and clearing detection device 90 use proximity switch.
As another embodiment, at the periphery of high speed shaft 80 sheathed high speed shaft rotating disk, high speed shaft rotating disk is offered Detection hole, using this detection hole as the fixed point of high speed shaft 80.Accordingly, zero detector 30 and clearing detection device 90 can To use proximity switch or photoswitch.
As another embodiment, at the periphery of high speed shaft 80 sheathed high speed shaft rotating disk, at the first of high speed shaft rotating disk Side arranges block, using this block as the fixed point of high speed shaft.Accordingly, zero detector 30 and clearing detection device 90 Proximity switch can be used.
In the respective embodiments described above, the fixed point of high speed shaft 80 and the position of zero detector 30, may refer to figure 13 to Figure 16, and associated description above, be not discussed here.
Seeing Figure 19, Figure 19 is another kind of double feed wind power generator wind wheel azimuthal measurement system disclosed by the invention Structure chart.Double feed wind power generator includes wind wheel (not shown), electromotor (not shown), slow-speed shaft 10b, tooth Roller box 70 and high speed shaft 80.Slow-speed shaft 10b is connected with wind wheel, and high speed shaft 80 is connected with electromotor, and gear-box 70 is used for connecting low Speed axle 10b and high speed shaft 80.Measurement system includes rotation-speed measuring device 20, zero detector 30, resets detection device 90 and Controller 40.
Wherein:
Rotation-speed measuring device 20 is for detecting the rotating speed of slow-speed shaft 80.
Zero detector 30, when the fixed point of high speed shaft 80 rotates to precalculated position, exports the first on-off model. In enforcement, this precalculated position may be located at surface or the underface of the centrage of high speed shaft 80.
Reset detection device 90 to be arranged in the direction of rotation of high speed shaft 80 and postpone the relative to zero detector 30 The position of two angles, wherein, the second angle is that the fractional part of the gear ratio of gear-box 70 is multiplied by 360 °.Mark at high speed shaft 80 When fixed point goes to the position relative with resetting detection device 90, reset detection device 90 and export the first on-off model.With at a high speed As a example by axle 80 turns clockwise, the gear ratio of gear-box 70 is 110.2, reset detection device 90 and be arranged in the clockwise direction The position of 72 ° is postponed relative to zero detector 30.It is to say, the fixed point of high speed shaft 80 goes to and zero detector After 30 relative positions, when high speed shaft 80 turns over 72 ° again, the fixed point of high speed shaft 80 is relative with resetting detection device 90.
Controller 40 is connected with rotation-speed measuring device 20, zero detector 30 and clearing detection device 90 respectively.Control Device 40 controls the rotation-speed measuring device 20 rotating speed according to prefixed time interval detection slow-speed shaft 10b, according to the rotating speed of slow-speed shaft 10b Calculate the angle value that slow-speed shaft 10b rotates within a preset time interval, to each calculated slow-speed shaft 10b at Preset Time The angle value rotated in interval carries out adding up obtaining accumulated value one by one.Further, controller 40 exports to zero detector 30 The number of times of one on-off model counts, after the integer part of the gear ratio reaching gear-box 70 in count value, and controller Accumulated value and count value, when receiving the first on-off model resetting detection device 90 output, are reset by 40.Controller 40 Using accumulated value as the azimuth of wind wheel.Wherein, the first angle is 360 ° of-Y/N, and wherein, N is the gear ratio of gear-box, and Y is tooth The fractional part of the gear ratio of roller box is multiplied by 360 °.
Needing exist for explanation, controller 40 controls rotation-speed measuring device 20 and carries out the prefixed time interval of Rotating speed measring Can be variable time interval, namely controller 40 controls rotation-speed measuring device 20 according to variable time interval detection height The rotating speed of speed axle 80.As a kind of preferred version, controller 40 controls rotation-speed measuring device 20 when carrying out Rotating speed measring default Between be spaced apart fixed time interval, namely controller 40 controls rotation-speed measuring device 20 and periodically detects high speed shaft 80 Rotating speed.
Below in conjunction with example, the measurement system shown in Figure 19 of the present invention is illustrated.
Controller 40 controls rotation-speed measuring device 20 and is periodically detected turning of slow-speed shaft 10b according to the time interval of 20ms Speed.Controller 40 calculates, according to the rotating speed of the slow-speed shaft 10b detected every time, the angle that slow-speed shaft 10b rotates in the 20ms in past Angle value.The angle value that each calculated slow-speed shaft 10b rotates within a preset time interval is tired out by controller 40 one by one Adding, the accumulated value obtained is as the azimuth of wind wheel.
It addition, when zero detector 20 exports the first on-off model, show that the fixed point of high speed shaft 80 rotates extremely Precalculated position, say, that high speed shaft 80 has been rotated through a circle.The gear ratio of gear-box 70 is N, when the circle that high speed shaft 80 turns over During the gear ratio N that number is gear-box 70, slow-speed shaft 10b turns over a circle.
In double feed wind power generator running, controller 40 exports the first switching value letter to zero detector 30 Number number of times count.If the gear ratio of gear-box 70 is not integer, then when count value reaches the transmission of gear-box 70 After the integer part of ratio, controller 40, will be cumulative when receiving the first on-off model resetting detection device 90 output Value and count value reset, and eliminate cumulative errors.It is to say, wind wheel often turns over a circle, controller 40 just azimuth to wind wheel Carry out primary calibration, in order to eliminate cumulative errors.
If it should be noted that the gear ratio of gear-box 70 is integer, then controller 40 reaches gear in count value During the gear ratio of case, show that slow-speed shaft 10b turns over a circle.Now, accumulated value and count value can be reset by controller 40, eliminate Cumulative errors.
Double feed wind power generator wind wheel azimuthal measurement system that the present invention is disclosed above, utilizes rotation-speed measuring device According to the rotating speed of prefixed time interval detection slow-speed shaft, determine that slow-speed shaft is in this prefixed time interval according to the rotating speed of slow-speed shaft The angle value rotated, the angle value rotated each calculated slow-speed shaft within a preset time interval adds up one by one, Using accumulated value as the azimuth of wind wheel.Further, zero detector is defeated when the fixed point of high speed shaft rotates to precalculated position Go out the first on-off model, when the fixed point of high speed shaft rotates extremely relative with resetting detection device position, reset detection and fill Putting output the first on-off model, controller exports the number of times of the first on-off model and counts zero detector, when After the integer part of the gear ratio that count value reaches gear-box, receiving the first switching value letter resetting detection device output Number time, accumulated value and count value are reset, eliminate cumulative errors.
Double feed wind power generator wind wheel disclosed by the invention azimuthal measurement system, counts according to the rotating speed of slow-speed shaft Calculate the azimuth of wind wheel, and the Rotating speed measring for slow-speed shaft is the metal rotary disk that need not arrange major diameter on slow-speed shaft , measurement system the most disclosed by the invention just can realize survey azimuthal to wind wheel without arranging major diameter metal rotating disk Amount；Meanwhile, measurement system disclosed by the invention, current time wind wheel can be calculated after rotating speed slow-speed shaft every time being detected Azimuth, there is preferable real-time, and the azimuthal precision of calculated wind wheel be higher, have the most continuously Property, do not have staged saltus step；It addition, controller is after wind wheel turns over a circle, the azimuth of wind wheel is reset, it is possible to disappear Except cumulative errors.
In the measurement system shown in Figure 19, the periphery of high speed shaft 80 is arranged with high speed shaft rotating disk 801, high speed shaft rotating disk 801 offer detection hole 802, will detect the hole 802 fixed point as high speed shaft 80.Accordingly, zero detector 30 is with clear Zero detection device 90 can use proximity switch or photoswitch.
In implementation process, the fixed point of high speed shaft 80 can also use other modes of confession mentioned above, can be found in above Description, repeat no more here.
Each measurement system that the present invention is disclosed above, according to prefixed time interval detection slow-speed shaft or the rotating speed of main shaft, Or according to the rotating speed of prefixed time interval detection high speed shaft, utilize the rotating speed of high speed shaft and the gear ratio calculation low speed of gear-box The rotating speed of axle, calculates the azimuth of wind wheel afterwards according to the rotating speed of slow-speed shaft or main shaft, and for slow-speed shaft, main shaft or high speed The Rotating speed measring of axle is the metal rotary disk that need not arrange major diameter at slow-speed shaft, main shaft or high speed shaft, and therefore the present invention is public The measurement system opened just can realize measurement azimuthal to wind wheel without arranging major diameter metal rotating disk；Meanwhile, the present invention is public The measurement system opened, can calculate current time wind wheel after rotating speed slow-speed shaft, main shaft or high speed shaft every time being detected Azimuth, has preferable real-time, and the azimuthal precision of calculated wind wheel is higher, have preferable seriality, Do not have staged saltus step；It addition, controller is after wind wheel turns over a circle, the azimuth of wind wheel is reset, it is possible to eliminate Cumulative errors.
In this specification, each embodiment uses the mode gone forward one by one to describe, and what each embodiment stressed is and other The difference of embodiment, between each embodiment, identical similar portion sees mutually.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention. Multiple amendment to these embodiments will be apparent from for those skilled in the art, as defined herein General Principle can realize without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention It is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein and features of novelty phase one The widest scope caused.

Claims (25)

1. wind turbines rotor azimuthal measurement system, it is characterised in that described wind-driven generator includes wind wheel, sends out Motor and drive shaft, described measurement system includes rotation-speed measuring device, zero detector and controller；
Described rotation-speed measuring device is for detecting the rotating speed of described drive shaft；
Described zero detector, when the fixed point of described drive shaft rotates to precalculated position, exports the first on-off model；
Described controller is connected with described rotation-speed measuring device and described zero detector respectively, and described controller controls described Rotation-speed measuring device detects the rotating speed of described drive shaft according to prefixed time interval, calculates described according to the rotating speed of described drive shaft The angle value that drive shaft rotates in described prefixed time interval, to each calculated described drive shaft described default time Between the angle value that rotates in interval carry out one by one cumulative obtaining accumulated value, described controller is receiving described zero detector Output the first on-off model time, described accumulated value is reset, described controller using described accumulated value as described wind wheel Azimuth.
Measurement system the most according to claim 1, it is characterised in that described controller is additionally operable to: surpass at described accumulated value When crossing 360 °, determine that described zero detector breaks down, by described accumulated value to 360 ° of remainders, using the remainder that obtains as The azimuth of described wind wheel.
Measurement system the most according to claim 1 and 2, it is characterised in that the periphery of described drive shaft is arranged with drive shaft Rotating disk, described drive shaft rotating disk is provided with detection hole, and described detection hole is the fixed point of described drive shaft；
Described zero detector is photoswitch or the proximity switch being arranged at described precalculated position, rotates in described drive shaft During, the detection hole of described drive shaft rotating disk rotates to the position relative with described photoswitch or described proximity switch.
Measurement system the most according to claim 1 and 2, it is characterised in that the periphery of described drive shaft is arranged with drive shaft Rotating disk, the first side of described drive shaft rotating disk is provided with block, and described block is the fixed point of described drive shaft；
Described zero detector is to be arranged at the close of the precalculated position relative with the first side of described drive shaft rotating disk to open Closing, in described drive shaft rotary course, the block of described drive shaft rotating disk rotates to the position relative with described proximity switch.
Measurement system the most according to claim 1 and 2, it is characterised in that the periphery of described drive shaft is provided with block, institute State the fixed point that block is described drive shaft；
Described zero detector is the proximity switch being arranged at described precalculated position, in described drive shaft rotary course, and institute State block to rotate to the position relative with described proximity switch.
Measurement system the most according to claim 1, it is characterised in that described rotation-speed measuring device is Hall revolution speed sensing Device, magnetic power rotation speed sensor or slip ring encoder.
Measurement system the most according to claim 1 and 2, it is characterised in that described drive shaft is direct-driving type wind power generation machine Main shaft, or described drive shaft is the slow-speed shaft of double feed wind power generator.
Measurement system the most according to claim 7, it is characterised in that the main shaft of direct-driving type wind power generation machine is internally provided with Slip ring, described slip ring is for connecting the cable in wind wheel hub and the cable in cabin, and described rotation-speed measuring device is for being arranged at Slip ring encoder within described slip ring, and described slip ring encoder is positioned on the rotation axis of described slip ring.
9. wind turbines rotor azimuthal measurement system, it is characterised in that described wind-driven generator includes wind wheel, sends out Motor, slow-speed shaft, gear-box and high speed shaft, described slow-speed shaft is connected with described wind wheel, and described high speed shaft is with described electromotor even Connecing, described gear-box is used for connecting described slow-speed shaft and described high speed shaft, and described measurement system includes rotation-speed measuring device, zero-bit Detection device and controller；
Described rotation-speed measuring device is for detecting the rotating speed of described high speed shaft；
Described zero detector, when the fixed point of described slow-speed shaft rotates to precalculated position, exports the first on-off model；
Described controller is connected with described rotation-speed measuring device and described zero detector respectively, and described controller controls described Rotation-speed measuring device detects the rotating speed of described high speed shaft according to prefixed time interval, according to the rotating speed of described high speed shaft and described The angle value that slow-speed shaft described in the gear ratio calculation of gear-box rotates in described prefixed time interval, to the most calculated The angle value that described slow-speed shaft rotates in described prefixed time interval carries out adding up obtaining accumulated value one by one, and described controller exists When receiving the first on-off model of described zero detector output, being reset by described accumulated value, described controller is by institute State the accumulated value azimuth as described wind wheel.
Measurement system the most according to claim 9, it is characterised in that described controller is additionally operable to: surpass at described accumulated value When crossing 360 °, determine that described zero detector breaks down, by described accumulated value to 360 ° of remainders, using the remainder that obtains as The azimuth of described wind wheel.
11. according to the measurement system described in claim 9 or 10, it is characterised in that the periphery of described slow-speed shaft is arranged with low speed Axle rotating disk, described slow-speed shaft rotating disk is provided with detection hole, and described detection hole is the fixed point of described slow-speed shaft；
Described zero detector is photoswitch or the proximity switch being arranged at described precalculated position, rotates at described slow-speed shaft During, the detection hole of described slow-speed shaft rotating disk rotates to the position relative with described photoswitch or described proximity switch.
12. according to the measurement system described in claim 9 or 10, it is characterised in that the periphery of described slow-speed shaft is arranged with low speed Axle rotating disk, the first side of described slow-speed shaft rotating disk is provided with block, and described block is the fixed point of described slow-speed shaft；
Described zero detector is to be arranged at the close of the precalculated position relative with the first side of described slow-speed shaft rotating disk to open Closing, in described slow-speed shaft rotary course, the block of described slow-speed shaft rotating disk rotates to the position relative with described proximity switch.
13. according to the measurement system described in claim 9 or 10, it is characterised in that the periphery of described slow-speed shaft is provided with block, Described block is the fixed point of described slow-speed shaft；
Described zero detector is the proximity switch being arranged at described precalculated position, in described slow-speed shaft rotary course, and institute State block to rotate to the position relative with described proximity switch.
14. 1 kinds of wind turbines rotor azimuthal measurement systems, it is characterised in that described wind-driven generator include wind wheel, Electromotor, slow-speed shaft, gear-box and high speed shaft, described slow-speed shaft is connected with described wind wheel, described high speed shaft and described electromotor Connect, described gear-box is used for connecting described slow-speed shaft and described high speed shaft, described measurement system include rotation-speed measuring device, zero Level detecting apparatus and controller；
Described rotation-speed measuring device is for detecting the rotating speed of described high speed shaft；
Described zero detector, when the fixed point of described high speed shaft rotates to precalculated position, exports the first on-off model；
Described controller is connected with described rotation-speed measuring device and described zero detector respectively, and described controller controls described Rotation-speed measuring device detects the rotating speed of described high speed shaft according to prefixed time interval, according to the rotating speed of described high speed shaft and described The angle value that slow-speed shaft described in the gear ratio calculation of gear-box rotates in described prefixed time interval, to the most calculated The angle value that described slow-speed shaft rotates in described prefixed time interval carries out adding up obtaining accumulated value, described controller pair one by one Described zero detector exports the number of times of the first on-off model and counts, and reaches the transmission of described gear-box in count value During the integer part of ratio, described accumulated value is verified as the first angle, afterwards when described accumulated value reaches 360 °, by described tired Value added and described count value resets, described controller using described accumulated value as the azimuth of described wind wheel；
Described first angle is 360 ° of-Y/N, and wherein, N is the gear ratio of described gear-box, and Y is the gear ratio of described gear-box Fractional part is multiplied by 360 °.
15. measurement systems according to claim 14, it is characterised in that described controller is additionally operable to: at described accumulated value During more than 360 °, determine that described zero detector breaks down, by described accumulated value to 360 ° of remainders, the remainder obtained is made Azimuth for described wind wheel.
16. according to the measurement system described in claims 14 or 15, it is characterised in that the periphery of described high speed shaft is arranged with at a high speed Axle rotating disk, described high speed shaft rotating disk is provided with detection hole, and described detection hole is the fixed point of described high speed shaft；
Described zero detector is photoswitch or the proximity switch being arranged at described precalculated position, rotates at described high speed shaft During, the detection hole of described high speed shaft rotating disk rotates to the position relative with described photoswitch or described proximity switch.
17. according to the measurement system described in claims 14 or 15, it is characterised in that the periphery of described high speed shaft is arranged with at a high speed Axle rotating disk, the first side of described high speed shaft rotating disk is provided with block, and described block is the fixed point of described high speed shaft；
Described zero detector is to be arranged at the close of the precalculated position relative with the first side of described high speed shaft rotating disk to open Closing, in described high speed shaft rotary course, the block of described high speed shaft rotating disk rotates to the position relative with described proximity switch.
18. according to the measurement system described in claims 14 or 15, it is characterised in that the periphery of described high speed shaft is provided with gear Block, described block is the fixed point of described high speed shaft；
Described zero detector is the proximity switch being arranged at described precalculated position, in described high speed shaft rotary course, and institute State block to rotate to the position relative with described proximity switch.
19. 1 kinds of wind turbines rotor azimuthal measurement systems, it is characterised in that described wind-driven generator include wind wheel, Electromotor, slow-speed shaft, gear-box and high speed shaft, described slow-speed shaft is connected with described wind wheel, described high speed shaft and described electromotor Connect, described gear-box is used for connecting described slow-speed shaft and described high speed shaft, described measurement system include rotation-speed measuring device, zero Level detecting apparatus and controller；
Described rotation-speed measuring device is for detecting the rotating speed of described slow-speed shaft；
Described zero detector, when the fixed point of described high speed shaft rotates to precalculated position, exports the first on-off model；
Described controller is connected with described rotation-speed measuring device and described zero detector respectively, and described controller controls described Rotation-speed measuring device detects the rotating speed of described slow-speed shaft according to prefixed time interval, calculates described according to the rotating speed of described slow-speed shaft The angle value that slow-speed shaft rotates in described prefixed time interval, to each calculated described slow-speed shaft described default time Between the angle value that rotates in interval carry out one by one cumulative obtaining accumulated value, described controller is to described zero detector output the The number of times of one on-off model counts, when the integer part of the gear ratio that count value reaches described gear-box, by described Accumulated value is verified as the first angle, afterwards when described accumulated value reaches 360 °, described accumulated value and described count value is reset, Described controller using described accumulated value as the azimuth of described wind wheel；
Described first angle is 360 ° of-Y/N, and wherein, N is the gear ratio of described gear-box, and Y is the gear ratio of described gear-box Fractional part is multiplied by 360 °.
20. measurement systems according to claim 19, it is characterised in that described controller is additionally operable to: at described accumulated value During more than 360 °, determine that described zero detector breaks down, by described accumulated value to 360 ° of remainders, the remainder obtained is made Azimuth for described wind wheel.
21. according to the measurement system described in claim 19 or 20, it is characterised in that the periphery of described high speed shaft is arranged with at a high speed Axle rotating disk, described high speed shaft rotating disk is provided with detection hole, and described detection hole is the fixed point of described high speed shaft；
Described zero detector is photoswitch or the proximity switch being arranged at described precalculated position, rotates at described high speed shaft During, the detection hole of described high speed shaft rotating disk rotates to the position relative with described photoswitch or described proximity switch.
22. according to the measurement system described in claim 19 or 20, it is characterised in that the periphery of described high speed shaft is arranged with at a high speed Axle rotating disk, the first side of described high speed shaft rotating disk is provided with block, and described block is the fixed point of described high speed shaft；
Described zero detector is to be arranged at the close of the precalculated position relative with the first side of described high speed shaft rotating disk to open Closing, in described high speed shaft rotary course, the block of described high speed shaft rotating disk rotates to the position relative with described proximity switch.
23. according to the measurement system described in claim 19 or 20, it is characterised in that the periphery of described high speed shaft is provided with gear Block, described block is the fixed point of described high speed shaft；
Described zero detector is the proximity switch being arranged at described precalculated position, in described high speed shaft rotary course, and institute State block to rotate to the position relative with described proximity switch.
24. 1 kinds of wind turbines rotor azimuthal measurement systems, it is characterised in that described wind-driven generator include wind wheel, Electromotor, slow-speed shaft, gear-box and high speed shaft, described slow-speed shaft is connected with described wind wheel, described high speed shaft and described electromotor Connect, described gear-box is used for connecting described slow-speed shaft and described high speed shaft, described measurement system include rotation-speed measuring device, zero Level detecting apparatus, clearing detection device and controller；
Described rotation-speed measuring device is for detecting the rotating speed of described high speed shaft；
Described zero detector, when the fixed point of described high speed shaft rotates to precalculated position, exports the first on-off model；
Described clearing detection device is arranged at and postpones relative to described zero detector in the direction of rotation of described high speed shaft The position of the second angle, the fixed point at described high speed shaft go to described reset detection device relative position time, described clearly Zero detection device exports the first on-off model, and wherein said second angle is that the fractional part of the gear ratio of described gear-box is taken separately With 360 °；
Described controller is connected with described rotation-speed measuring device, described zero detector and described clearing detection device respectively, Described controller controls described rotation-speed measuring device and detects the rotating speed of described high speed shaft according to prefixed time interval, according to described height The angle that slow-speed shaft described in the speed rotating speed of axle and the gear ratio calculation of described gear-box rotates in described prefixed time interval Value, carries out adding up to each calculated angle value obtaining accumulated value one by one, and described controller is to described zero detector The number of times exporting the first on-off model counts, reach in count value described gear-box gear ratio integer part it After, described controller is when receiving described the first on-off model resetting detection device output, by described accumulated value and institute State count value to reset, described controller using described accumulated value as the azimuth of described wind wheel；
Described first angle is 360 ° of-Y/N, and wherein, N is the gear ratio of described gear-box, and Y is the gear ratio of described gear-box Fractional part is multiplied by 360 °.
25. 1 kinds of wind turbines rotor azimuthal measurement systems, it is characterised in that described wind-driven generator include wind wheel, Electromotor, slow-speed shaft, gear-box and high speed shaft, described slow-speed shaft is connected with described wind wheel, described high speed shaft and described electromotor Connect, described gear-box is used for connecting described slow-speed shaft and described high speed shaft, described measurement system include rotation-speed measuring device, zero Level detecting apparatus, clearing detection device and controller；
Described rotation-speed measuring device is for detecting the rotating speed of described slow-speed shaft；
Described zero detector, when the fixed point of described high speed shaft rotates to precalculated position, exports the first on-off model；
Described clearing detection device is arranged at and postpones relative to described zero detector in the direction of rotation of described high speed shaft The position of the second angle, the fixed point at described high speed shaft go to described reset detection device relative position time, described clearly Zero detection device exports the first on-off model, and wherein said second angle is that the fractional part of the gear ratio of described gear-box is taken separately With 360 °；
Described controller is connected with described rotation-speed measuring device, described zero detector and described clearing detection device respectively, Described controller controls described rotation-speed measuring device and detects the rotating speed of described slow-speed shaft according to prefixed time interval, according to described low The rotating speed of speed axle calculates the angle value that described slow-speed shaft rotates in described prefixed time interval, to each calculated angle Value carries out adding up obtaining accumulated value one by one, and described controller exports the number of times of the first on-off model to described zero detector Count, after the integer part of the gear ratio reaching described gear-box in count value, described controller receive described When resetting the first on-off model of detection device output, described accumulated value and described count value being reset, described controller will Described accumulated value is as the azimuth of described wind wheel；
Described first angle is 360 ° of-Y/N, and wherein, N is the gear ratio of described gear-box, and Y is the gear ratio of described gear-box Fractional part is multiplied by 360 °.
CN201610859156.4A 2016-09-28 2016-09-28 System for measuring azimuth angle of wind wheel of wind driven generator Active CN106286154B (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108869195A (en) * 2018-06-21 2018-11-23 湘电风能有限公司 A kind of azimuthal method of measurement wind power generating set impeller
CN109667726A (en) * 2017-10-17 2019-04-23 新疆金风科技股份有限公司 Wind turbines rotor tachometric survey structure, device and wind power generating set
CN109839059A (en) * 2019-02-01 2019-06-04 南京理工大学 A kind of ship rotary axis phase angle measurement device and method
CN110480331A (en) * 2019-09-17 2019-11-22 河北大唐国际新能源有限公司 Equipment for demarcating fan blade zero-bit established angle
CN112067838A (en) * 2020-08-20 2020-12-11 上海汉虹精密机械有限公司 Motor rotation angle and speed measuring device and method
CN112523946A (en) * 2019-09-17 2021-03-19 北京金风科创风电设备有限公司 Variable pitch control method, device and medium for wind generating set
CN112855468A (en) * 2021-04-04 2021-05-28 中国船级社质量认证公司 Device and method for measuring azimuth angle of impeller of wind driven generator
CN113137940A (en) * 2021-04-23 2021-07-20 歌尔股份有限公司 Control method, device and equipment of electronic equipment and readable storage medium
CN113464377A (en) * 2020-03-31 2021-10-01 新疆金风科技股份有限公司 Impeller detection system and method of wind generating set
CN113803221A (en) * 2021-09-14 2021-12-17 山东中车风电有限公司 Device and method for measuring azimuth angle and rotating speed of wind wheel of fan based on ball switch

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109667726A (en) * 2017-10-17 2019-04-23 新疆金风科技股份有限公司 Wind turbines rotor tachometric survey structure, device and wind power generating set
CN108869195A (en) * 2018-06-21 2018-11-23 湘电风能有限公司 A kind of azimuthal method of measurement wind power generating set impeller
CN109839059A (en) * 2019-02-01 2019-06-04 南京理工大学 A kind of ship rotary axis phase angle measurement device and method
CN112523946B (en) * 2019-09-17 2022-10-18 北京金风科创风电设备有限公司 Variable pitch control method and device for wind generating set and medium
CN110480331A (en) * 2019-09-17 2019-11-22 河北大唐国际新能源有限公司 Equipment for demarcating fan blade zero-bit established angle
CN112523946A (en) * 2019-09-17 2021-03-19 北京金风科创风电设备有限公司 Variable pitch control method, device and medium for wind generating set
CN110480331B (en) * 2019-09-17 2024-03-19 河北大唐国际新能源有限公司 Device for calibrating zero-position installation angle of fan blade
CN113464377A (en) * 2020-03-31 2021-10-01 新疆金风科技股份有限公司 Impeller detection system and method of wind generating set
CN112067838A (en) * 2020-08-20 2020-12-11 上海汉虹精密机械有限公司 Motor rotation angle and speed measuring device and method
CN112855468A (en) * 2021-04-04 2021-05-28 中国船级社质量认证公司 Device and method for measuring azimuth angle of impeller of wind driven generator
CN112855468B (en) * 2021-04-04 2022-06-28 中国船级社质量认证有限公司 Device and method for measuring azimuth angle of impeller of wind driven generator
CN113137940A (en) * 2021-04-23 2021-07-20 歌尔股份有限公司 Control method, device and equipment of electronic equipment and readable storage medium
CN113803221A (en) * 2021-09-14 2021-12-17 山东中车风电有限公司 Device and method for measuring azimuth angle and rotating speed of wind wheel of fan based on ball switch

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