CN211819804U - Rotating speed measuring device for wind generating set - Google Patents
Rotating speed measuring device for wind generating set Download PDFInfo
- Publication number
- CN211819804U CN211819804U CN201922337509.6U CN201922337509U CN211819804U CN 211819804 U CN211819804 U CN 211819804U CN 201922337509 U CN201922337509 U CN 201922337509U CN 211819804 U CN211819804 U CN 211819804U
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- CN
- China
- Prior art keywords
- hall element
- hall
- generating set
- wind generating
- fixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 238000001514 detection method Methods 0.000 claims abstract description 9
- 238000004891 communication Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 2
- 108010066057 cabin-1 Proteins 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009532 heart rate measurement Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The utility model discloses a rotational speed measuring device for wind generating set, a serial communication port, including the hall fixed bolster, the hall fixed bolster is fixed on wind generating set's cabin, is fixed with hall element on the hall fixed bolster, and hall element's sense terminal aims at the terminal surface of last magnet steel of electric motor rotor. The utility model utilizes the Hall element to react the change of the intensity of the magnetic field to generate a pulse signal, and detects the rotating speed of the motor; because the utility model discloses with hall element snap-on in the stationary cabin, hall element direct detection rotor goes up the magnetic field of magnet steel and is strong and weak, does not have interference signal, improves the rotational speed and detects the precision.
Description
Technical Field
The utility model relates to a rotational speed measuring device for wind generating set belongs to green energy resource equipment technical field.
Background
In order to improve the reliability and safety of the wind generating set in operation, the rotating speed of the wind generating set needs to be detected in real time, and then the rotating speed is limited in a safe rotating speed range. The commonly used method for detecting the rotating speed of the generator has two types:
one is counting the pulse measurement: measuring the voltage signal frequency f of the generator, outputting a pulse signal, converting the pulse signal into a corresponding generator rotating speed, and transmitting the generator rotating speed to a main control system of the wind driven generator; the other is mechanical sensor measurement: the rotation speed of a digital gear disc mounted on the main shaft is measured by using a proximity switch.
The patent with the application number of 201210584002.0 discloses a device and a method for measuring the rotating speed and the position of a rotor of a dual-rotor permanent magnet wind driven generator, wherein a groove is machined on the surface of a stator tooth of a stator punching sheet, and a Hall element is arranged in the groove, so that the device has the defects that: in the patent, the Hall element is fixed on the stator, and the current passing through the stator winding also generates a magnetic field, so that the magnetic field interferes with a pulse signal generated by the Hall element and influences the measurement accuracy.
The patent with the application number of 201720472370.4 discloses "aerogenerator main shaft rotational speed detection device", and it detects the dish through the bolt fastening rotational speed on the pivot retainer plate, evenly sets up round inspection hole, shortcoming on detecting the dish: the detection disc is provided with a circle of detection holes, so that the structure is complex; the detection plate is fixed on the rotating shaft, and in the long-term operation process, bolts fixed on the rotating shaft have loosening risks.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: how to make and utilize hall element to react the strong and weak change of magnetic field and produce pulse signal, when detecting the rotational speed of motor, do not influence and detect the precision.
In order to solve the technical problem, the technical scheme of the utility model a rotational speed measuring device for wind generating set is provided, a serial communication port, including hall fixed bolster, hall fixed bolster is fixed on wind generating set's cabin, is fixed with hall element on the hall fixed bolster, and hall element's sense terminal aims at the terminal surface of last magnet steel of electric motor rotor.
Preferably, the distance between the hall element and the magnetic steel is within the detection distance range of the hall element.
The utility model utilizes the Hall element to react the change of the intensity of the magnetic field to generate a pulse signal, and detects the rotating speed of the motor; because the utility model discloses with hall element snap-on in the stationary cabin, hall element direct detection rotor goes up the magnetic field of magnet steel and is strong and weak, does not have interference signal, improves the rotational speed and detects the precision.
Drawings
Fig. 1 is a schematic view of a rotational speed measuring device for a wind turbine generator system.
Detailed Description
In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
The utility model relates to a rotational speed measuring device for wind generating set, as shown in fig. 1, it includes hall fixed bolster 3 and hall element 2, trompil on the cabin 1 of unmovable conduct motor rear end cap, from outside fixed hall fixed bolster 3, hall element 2's on the hall fixed bolster 3 sense terminal is aimed at the motor rotor of wind generating set and is gone up magnet steel 4's terminal surface, hall element 2 and magnet steel 4's interval is in hall element 2's detection distance within range. The upper magnetic steel 4 of the motor rotor is arranged on the outer side of the stator assembly 5.
In the rotating process of a motor rotor of the wind generating set, the magnetic steel 4 rotates along with the motor rotor, the fixed Hall element 2 reacts to the change of the strength of a magnetic field to generate a pulse signal, and the pulse signal generated by the Hall element 2 is converted into the rotating speed of the generator through the calculation of a main control system, so that the rotating speed is controlled.
Claims (2)
1. The utility model provides a rotational speed measuring device for wind generating set, its characterized in that includes hall fixed bolster (3), and hall fixed bolster (3) are fixed on wind generating set's cabin, are fixed with hall element (2) on hall fixed bolster (3), and the sense terminal of hall element (2) aims at the terminal surface of last magnet steel (4) of electric motor rotor.
2. The rotating speed measuring device for the wind generating set according to claim 1, wherein the distance between the Hall element (2) and the magnetic steel (4) is within the detection distance range of the Hall element (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922337509.6U CN211819804U (en) | 2019-12-20 | 2019-12-20 | Rotating speed measuring device for wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922337509.6U CN211819804U (en) | 2019-12-20 | 2019-12-20 | Rotating speed measuring device for wind generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211819804U true CN211819804U (en) | 2020-10-30 |
Family
ID=73032874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922337509.6U Expired - Fee Related CN211819804U (en) | 2019-12-20 | 2019-12-20 | Rotating speed measuring device for wind generating set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211819804U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114738188A (en) * | 2022-05-12 | 2022-07-12 | 北京国能风光能源科技有限公司 | Blade photovoltaic type vertical wind driven generator system |
-
2019
- 2019-12-20 CN CN201922337509.6U patent/CN211819804U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114738188A (en) * | 2022-05-12 | 2022-07-12 | 北京国能风光能源科技有限公司 | Blade photovoltaic type vertical wind driven generator system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230330 Address after: Building 9, No. 52 Xingang Road, Xiaokunshan Town, Songjiang District, Shanghai, 201614 Patentee after: Shanghai Xiongli Construction Machinery Co.,Ltd. Address before: 201600 No. 202 Liuye Road, Chedun Town, Songjiang District, Shanghai Patentee before: SHANGHAI GHREPOWER GREEN ENERGY Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201030 |