CN215728659U - Device for detecting static braking torque of variable pitch motor - Google Patents
Device for detecting static braking torque of variable pitch motor Download PDFInfo
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- CN215728659U CN215728659U CN202121067041.4U CN202121067041U CN215728659U CN 215728659 U CN215728659 U CN 215728659U CN 202121067041 U CN202121067041 U CN 202121067041U CN 215728659 U CN215728659 U CN 215728659U
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Abstract
An apparatus for pitch motor static brake torque detection, comprising: the main controller is arranged on the upper side portion in the control cabinet, the motor drivers are arranged on the lower side portion in the control cabinet, the main controller is connected with the motor drivers through communication cables and communicates with the motor drivers by using a CAN bus protocol, wherein CAN refers to a controller area network bus, each motor driver is connected with one pitch-variable motor, and connecting cables between the motor drivers and the pitch-variable motors comprise power cables for providing driving current for the pitch-variable motors, coding cables for feeding back position signals of the motor drivers and brake cables for connecting the pitch-variable motor brakes. The device is applied to static torque detection of the variable pitch motor, and through reasonable matching of the main controller and the motor driver, the static braking torque of the motor is accurately detected, so that whether the brake of the motor meets relevant requirements or not is judged.
Description
Technical Field
The utility model belongs to the technical field of a variable pitch control system of a wind generating set, and particularly relates to a device for detecting static braking torque of a variable pitch motor.
Background
Wind power generation is to convert wind energy into electric energy, and the wind energy is visible everywhere and has huge content. Accordingly, wind power generation has been drawing attention from various countries, and attention is being given to the construction of wind power generation.
The wind power generation technology has made great progress at present, and the variable pitch system is used as an important control device of the wind generating set and also plays an important role in protecting the wind generating set. In the prior art, the rated power and the blade length of a wind generating set are continuously increased, and the rated torque of a variable pitch system needs to be synchronously improved.
In a shutdown mode, the wind generating set needs to maintain the blades to be stopped at a safe position by means of the braking torque provided by the variable pitch motor, and if the brake of the variable pitch motor cannot provide enough braking torque, the safety of the whole wind generating set is directly affected, so that the detection of the braking torque of the variable pitch motor is very necessary.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problems in the prior art, the utility model provides a device for detecting the static braking torque of the variable pitch motors, which can detect the braking torque of each variable pitch motor while providing driving signals for a plurality of variable pitch motors respectively, thereby effectively judging whether the brakes of each variable pitch motor meet the relevant safety requirements.
The utility model adopts the following technical scheme:
an apparatus for pitch motor static brake torque detection, comprising: the main controller is arranged on the upper side portion in the control cabinet, the motor drivers are arranged on the lower side portion in the control cabinet, the main controller is connected with the motor drivers through communication cables and communicates with the motor drivers through a CAN bus protocol, the CAN refers to a controller area network bus, each motor driver is connected with one pitch-variable motor, and connecting cables between the motor drivers and the pitch-variable motors comprise power cables used for providing driving current for the pitch-variable motors, coding cables used for feeding back position signals for the motor drivers and brake cables used for connecting the pitch-variable motor brakes.
Preferably, a terminal strip is further arranged in the control cabinet.
Preferably, the control cabinet is provided with a guide rail at the upper side part, and the terminal strip is arranged on the guide rail.
Preferably, the input end of the terminal strip is connected with a power supply outside the control cabinet through a lead.
Preferably, an AC/DC switching power supply is further arranged in the control cabinet.
Preferably, the output terminals of the terminal block are connected to the input terminals of the AC/DC switching power supply and the input terminals of the motor driver, respectively.
Preferably, the input terminal of the main controller is connected with the output terminal of the AC/DC switching power supply.
Preferably, the output of the terminal block is connected to the input of the AC/DC switching power supply via a first switching device.
Preferably, the output of the terminal block is connected to several motor drives via a second switching device.
Preferably, the input terminal of the main controller is connected to the output terminal of the AC/DC switching power supply through a third switching device.
Preferably, the first, second and third switching devices are all air switches.
Preferably, the main controller further comprises an ethernet interface, and the ethernet interface is connected with the computer through ethernet.
Compared with the prior art, the utility model has the following technical effects:
the static braking torque detection device is mainly applied to static torque detection of the variable pitch motor, and through reasonable matching of the main controller and the motor driver, the static braking torque of the motor is accurately detected, so that whether a brake of the motor meets related requirements or not is effectively judged. Through the test interface of host computer PC end, can select the motor model that needs the test, then start the detection procedure, main control unit procedure sends position signal and current signal to motor drive, and motor drive can give the motor output corresponding current control motor and rotate, controls motor brake simultaneously and is in the closure state. And the main controller analyzes the actual position change value, the actual current value and Kt values corresponding to different motors so as to judge whether the motor brake is qualified.
Drawings
FIG. 1 is a schematic diagram of the device for detecting the static braking torque of the pitch motor according to the utility model.
In the figure:
1-terminal row;
2-a main controller;
3-AC/DC switching power supply;
4-a motor driver;
5-a variable pitch motor;
6-a control cabinet;
7-air switch.
Detailed Description
The present application is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present application is not limited thereby.
As shown in fig. 1, the present invention provides a device for detecting static braking torque of a pitch motor, which mainly comprises: the main controller 2, a plurality of motor drivers 4 and the same number of pitch motors 5 as the motor drivers 4.
The main controller 2 is arranged on the upper side part in the control cabinet 6, the motor driver 4 is arranged on the lower side part in the control cabinet 6, the main controller 2 is connected with the motor driver 4 through a communication cable, and the CAN bus protocol is used for communicating with the motor driver 4, wherein the CAN refers to a controller area network bus. The main controller 2 and the motor driver 4 mutually transmit information such as position setting, position feedback, current, speed, temperature, etc. via the CAN bus. The main controller 2 includes an ethernet interface and is connected to a computer via an ethernet network.
Each motor driver 4 is connected with one pitch motor 5, and the connecting cables between the motor drivers 4 and the pitch motors 5 comprise power cables for providing driving current for the pitch motors 5, coding cables for feeding back position signals for the motor drivers 4 and brake cables for connecting brakes of the pitch motors 5. The motor driver 4 can control a brake of the variable pitch motor 5 to be in a contracting brake state, and outputs specified voltage, current and frequency signals to the variable pitch motor 5 according to instructions of the main controller 2 to drive the variable pitch motor 5 to act, and the variable pitch motor 5 feeds back position signals to the motor driver 4 through a coding cable.
The computer is used as an upper computer PC end, technicians in the field of test interfaces can select the model of a motor to be tested, a detection program is started, a main controller 2 program sends a position setting instruction and a current instruction to a motor driver 4, the motor driver 4 outputs different currents and frequencies to a variable pitch motor 5 to control the action of the variable pitch motor 5, and meanwhile, a brake of the variable pitch motor 5 is controlled to be in a contracting brake state. And the main controller 2 analyzes and calculates the maximum static torque of the brake of the variable pitch motor 5 according to the actual position change value, the actual current value and the Kt values corresponding to different motors, so as to judge whether the brake of the variable pitch motor 5 meets the requirements.
The control cabinet 6 is also provided with a terminal strip 1, the upper side part of the control cabinet 6 is provided with a guide rail, and the terminal strip 1 is arranged on the guide rail. The input end of the terminal block 1 is connected with a power supply outside the control cabinet 6 through a lead.
An AC/DC switching power supply 3 is also arranged in the control cabinet 6.
It is to be noted that the position arrangement of the terminal block 1, the main controller 2, the AC/DC switching power supply 3 and the motor driver 4 used in the embodiment is only preferable but not restrictive, and those skilled in the art may change the arrangement manner thereof according to the actual situation in the field, in case of meeting the safety regulations, for example, but not limited to, the terminal block 1, the main controller 2 and the AC/DC switching power supply 3 are arranged in the control cabinet 6 in order along the horizontal direction.
The output terminals of the terminal block 1 are connected to the input terminals of the AC/DC switching power supply 3 and the input terminals of the motor driver 4, respectively, for supplying power to the AC/DC switching power supply 3 and the motor driver 4.
The input end of the main controller 2 is connected with the output end of the AC/DC switching power supply 3, and the power is supplied to the main controller 2 through the AC/DC switching power supply 3.
The output of the terminal block 1 is connected to an AC/DC switching power supply 3 via a first switching device. The output of the terminal block 1 is connected to several motor drivers, more specifically, the output of the terminal block 1 is connected to three motor drivers 4 through a second switching device, and the second switching device is used to control whether the three motor drivers 4 are powered. The input end of the main controller 2 is connected with the output end of the AC/DC switching power supply 3 through a third switching device, and the third switching device is used for controlling whether the main controller 2 is electrified or not. The skilled person can choose the type of switch at will according to the actual situation, and preferably, but not limitatively, the first, second and third switching devices are all air switches 7.
Compared with the prior art, the utility model has the following technical effects:
the static braking torque detection device is mainly applied to static torque detection of the variable pitch motor, and through reasonable matching of the main controller and the motor driver, the static braking torque of the motor is accurately detected, so that whether a brake of the motor meets related requirements or not is effectively judged. Through the test interface of host computer PC end, can select the motor model that needs the test, then start the detection procedure, main control unit procedure sends position signal and current signal to motor drive, and motor drive can give the motor output corresponding current control motor and rotate, controls motor brake simultaneously and is in the closure state. And the main controller analyzes the actual position change value, the actual current value and Kt values corresponding to different motors so as to judge whether the motor brake is qualified.
The applicant has described and illustrated embodiments of the present invention in detail with reference to the drawings attached hereto, but it should be understood by those skilled in the art that the above embodiments are merely preferred embodiments of the present invention, and the detailed description is only for the purpose of helping the reader to better understand the spirit of the present invention, and not for limiting the scope of the present invention, and on the contrary, any improvement or modification made based on the spirit of the present invention should fall within the scope of the present invention.
Claims (10)
1. An apparatus for pitch motor static brake torque detection, comprising: main control unit (2), a plurality of motor drive (4) and become oar motor (5) the same with motor drive (4) quantity, its characterized in that:
the main controller (2) is arranged on the upper side part in the control cabinet (6),
the motor driver (4) is arranged at the lower side part in the control cabinet (6),
the main controller (2) is connected with the motor driver (4) through a communication cable and communicates with the motor driver (4) by using a CAN bus protocol, wherein the CAN refers to a controller area network bus,
each motor driver (4) is connected with a variable pitch motor (5),
the connecting cable between the motor driver (4) and the variable pitch motor (5) comprises a power cable for providing driving current for the variable pitch motor (5), a coding cable for feeding back position signals for the motor driver (4) and a brake cable for connecting a brake of the variable pitch motor (5).
2. The apparatus for pitch motor static braking torque detection according to claim 1, wherein:
and a terminal strip (1) is also arranged in the control cabinet (6).
3. The apparatus for pitch motor static brake torque detection according to claim 2, wherein:
the side portion of the control cabinet (6) is provided with a guide rail, and the terminal strip (1) is arranged on the guide rail.
4. The apparatus for pitch motor static brake torque detection according to claim 3, wherein:
the input end of the terminal strip (1) is connected with a power supply outside the control cabinet (6) through a lead.
5. The apparatus for pitch motor static brake torque detection according to claim 3, wherein:
an AC/DC switching power supply (3) is also arranged in the control cabinet (6).
6. The apparatus for pitch motor static brake torque detection according to claim 5, wherein:
and the output end of the terminal block (1) is respectively connected with the input end of the AC/DC switching power supply (3) and the input end of the motor driver (4).
7. The apparatus for pitch motor static brake torque detection according to claim 6, wherein:
the input end of the main controller (2) is connected with the output end of the AC/DC switching power supply (3).
8. The apparatus for pitch motor static brake torque detection according to claim 7, wherein:
the output end of the terminal block (1) is connected with the input end of an AC/DC switching power supply (3) through first switching equipment;
the output end of the terminal block (1) is connected with a plurality of motor drivers (4) through second switch equipment;
the input end of the main controller (2) is connected with the output end of the AC/DC switching power supply (3) through a third switching device.
9. The apparatus for pitch motor static brake torque detection according to claim 8, wherein:
the first, second and third switching devices are all air switches (7).
10. The apparatus for pitch motor static braking torque detection according to claim 1, wherein:
the main controller (2) also comprises an Ethernet interface which is connected with a computer through Ethernet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121067041.4U CN215728659U (en) | 2021-05-18 | 2021-05-18 | Device for detecting static braking torque of variable pitch motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121067041.4U CN215728659U (en) | 2021-05-18 | 2021-05-18 | Device for detecting static braking torque of variable pitch motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215728659U true CN215728659U (en) | 2022-02-01 |
Family
ID=80032034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121067041.4U Active CN215728659U (en) | 2021-05-18 | 2021-05-18 | Device for detecting static braking torque of variable pitch motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215728659U (en) |
-
2021
- 2021-05-18 CN CN202121067041.4U patent/CN215728659U/en active Active
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