CN216926946U

CN216926946U - Portable testing device for variable frequency controller of wind driven generator

Info

Publication number: CN216926946U
Application number: CN202123346204.5U
Authority: CN
Inventors: 刘思文; 吴迪; 张广洁
Original assignee: Beijing Goldwind Smart Energy Service Co Ltd
Current assignee: Beijing Goldwind Smart Energy Service Co Ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-07-08
Anticipated expiration: 2031-12-28

Abstract

The utility model provides a portable testing device for a variable frequency controller of a wind driven generator. The portable box body is characterized in that an operation panel and an upper cover covering the operation panel are arranged on the upper surface of the portable box body, the alternating current power supply and the first digital quantity interface are arranged on the left portion of the operation panel, the second digital quantity interface and the direct current power supply are arranged on the right portion of the operation panel, the display and the analog quantity interface are arranged on the front portion of the operation panel, and the center of the operation panel is used for placing a frequency conversion controller to be tested. The portable testing device for the variable frequency controller of the wind driven generator is simple to operate, easy to carry, high in reliability and good in compatibility.

Description

Portable testing device for variable frequency controller of wind driven generator

Technical Field

The utility model relates to the field of wind power generation, in particular to a portable testing device for a variable frequency controller of a wind driven generator.

Background

The frequency conversion controller usually uses a special testing device, and the special testing device has the advantages of complex operation, single testing model, low automation degree and inconvenience for carrying.

SUMMERY OF THE UTILITY MODEL

In order to solve the portability problem of the testing device of the existing wind driven generator variable frequency controller, the portable testing device for the wind driven generator variable frequency controller is simple to operate, easy to carry and high in reliability.

According to one aspect of the utility model, a portable testing device for a variable frequency controller of a wind driven generator is provided. The portable testing device comprises a portable box body, an alternating current power supply, a direct current power supply, a first digital quantity interface, a second digital quantity interface, an analog quantity interface and a display. The portable box body is characterized in that an operation panel and an upper cover covering the operation panel are arranged on the upper surface of the portable box body, the alternating current power supply and the first digital quantity interface are arranged on the left portion of the operation panel, the second digital quantity interface and the direct current power supply are arranged on the right portion of the operation panel, the display and the analog quantity interface are arranged on the front portion of the operation panel, and the center of the operation panel is used for placing a variable frequency controller to be tested.

Preferably, the portable testing device further comprises: and the controller is arranged inside the portable box body and is electrically connected with the alternating current power supply, the direct current power supply, the first digital quantity interface, the second digital quantity interface, the analog quantity interface and the display.

Preferably, the controller is one of an ARM processor, a programmable controller, a digital signal processor and a single chip microcomputer.

Preferably, the controller has a signal generator electrically connected to the analog quantity interface and having a square wave output of an analog encoder signal, a sine wave output of an analog voltage or current signal, and a high-low level output of an analog switching signal.

Preferably, the signal generator is electrically connected to the analog interface through a signal preprocessing module, and the signal preprocessing module is used for amplitude modulation or driving amplification of the analog signal sent or received by the signal generator.

Preferably, the controller supplies power to the variable frequency controller to be tested through the alternating current power supply and the direct current power supply.

Preferably, the controller sends a test signal to the variable frequency controller to be tested or receives a test signal from the variable frequency controller to be tested through the first digital quantity interface, the second digital quantity interface and the analog quantity interface.

Preferably, the controller displays the test result of the variable frequency controller to be tested through the display.

Preferably, the first digital interface or the second digital interface of the portable testing device includes a temperature signal interface, and the controller receives the temperature signal of the variable frequency controller to be tested through the temperature signal interface.

Preferably, the portable testing device further comprises a heat radiation fan disposed at a side portion of the portable box.

The portable testing device of the variable frequency controller of the wind driven generator is simple and convenient to operate, good in testing model compatibility, high in automation degree and convenient to carry.

Drawings

The above and other aspects, features and advantages of the present invention will be more clearly understood from the following description taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a schematic diagram of a portable testing device according to an example;

FIG. 2 is a schematic illustration of a test flow of a portable testing device according to an example;

FIG. 3 is a schematic diagram of a connection between a portable testing device and a variable frequency controller according to an example;

FIG. 4 is a schematic diagram of a detailed test flow of a portable testing device according to an example.

Detailed Description

The following detailed description is provided to assist the reader in obtaining a thorough understanding of the methods, devices, and/or systems described herein. However, various variations, modifications, and equivalents of the methods, apparatus, and/or systems described herein will be apparent to those skilled in the art upon reading the disclosure of this application. For example, the order of operations described herein is merely an example, which is not limited to the order set forth herein, but rather, upon understanding the disclosure of the present application, changes may be made in addition to the operations which must occur in a particular order. Moreover, descriptions of features known in the art may be omitted for the sake of clarity and conciseness. In order that those skilled in the art will better understand the present invention, specific embodiments thereof will be described in detail below with reference to the accompanying drawings.

Fig. 1 is a schematic diagram of a portable testing device according to an example.

Referring to fig. 1, a portable testing device according to an example may be used for testing a variable frequency controller of a wind turbine, and the portable testing device may include a portable box 10, an ac power source 11, a dc power source 12, a first digital interface 13, a second digital interface 14, an analog interface 15, and a display 16. The analog interface 15 may include a three-phase current signal interface, a three-phase voltage interface. The first digital quantity interface 13 and the second digital quantity interface 14 may include a rotational speed signal interface and a driving signal interface. The AC power source 11 and the DC power source 12 may include a 10V voltage source and a 0-20mA current source. The portable casing 10 has an operation panel 10a and an upper cover 10b covering the operation panel 10a on an upper surface thereof, an ac power supply 11 and a first digital interface 13 may be disposed on a left portion of the operation panel 10a, a second digital interface 14 and a dc power supply 12 may be disposed on a right portion of the operation panel 10a, a display 16 and an analog interface 15 may be disposed on a front portion of the operation panel 10a, and a center of the operation panel 10a is used for placing a variable frequency controller to be tested. The alternating current power supply 11, the direct current power supply 12, the first digital interface 13, the second digital interface 14, the analog interface 15 and the like of the portable testing device can be respectively connected with corresponding ports of the variable frequency controller to be tested.

The portable testing device according to the example is highly integrated and portable.

The portable testing device according to the example may further include a controller (not shown) disposed inside the portable case 10 and electrically connected to the ac power source 11, the dc power source 12, the first digital interface 13, the second digital interface 14, the analog interface 15, and the display 16.

The controller can supply power to the variable frequency controller to be tested through the alternating current power supply 11 and the direct current power supply 12. Alternatively, the controller may be one of an ARM processor, a programmable controller, a digital signal processor, and a single chip. The controller may have a signal generator electrically connected to the analog quantity interface 15 and having a square wave output of an analog encoder signal, a sine wave output of an analog voltage or current signal, and a high-low level output of an analog switch signal. The signal generator of the controller can be electrically connected to the analog quantity interface through a signal preprocessing module, and the signal preprocessing module can amplitude-modulate or drive and amplify the analog signals sent or received by the signal generator. The input function test of a digital quantity interface and/or an analog quantity interface of voltage input, current input, switch contact input and the like of the variable frequency controller can be realized through square wave output, sine wave output and high-low level output. The controller can send test signals to or receive test signals from the variable frequency controller to be tested through the first digital quantity interface 13, the second digital quantity interface 14 and the analog quantity interface 15.

The controller may display the test results for the variable frequency controller under test via display 16. The first digital interface 13 or the second digital interface 14 of the portable testing device may further include a temperature signal interface, and the controller receives a temperature signal of the variable frequency controller to be tested through the temperature signal interface. The portable testing device may include a communication interface, which may be disposed at a front portion on the operation panel 10 a. In addition, the portable testing device may further include a heat dissipation fan 17, and the heat dissipation fan 17 may be disposed at a side portion of the portable case 10.

FIG. 2 is a schematic diagram of a test flow of a portable testing device according to an example.

The portable test apparatus according to the example may automatically perform the controller power test 20, the controller communication test 22, the analog input/output test 24, the control input/output test 26 in a predetermined order, and display the test result 28.

FIG. 3 is a schematic diagram of a connection between a portable testing device and a variable frequency controller according to an example.

Referring to fig. 3, the portable test apparatus according to an example may have a digital quantity input/output interface, an analog quantity input/output interface, a function signal interface, a power supply interface, and a communication interface (e.g., a 485 communication interface, a CAN communication interface, and an ethernet interface) connected corresponding to the variable frequency controller. The interfaces may be connected by power lines or communication lines to exchange power signals or communication signals.

Specifically, the digital quantity input/output interface (the first digital quantity interface and/or the second digital quantity interface) of the portable testing device can be connected to the digital quantity input/output interface of the variable frequency controller to transmit digital quantity signals. The analog input/output interface (analog interface) of the portable testing device can be connected to the analog input/output interface of the variable frequency controller to transmit analog signals, wherein the analog output of the portable testing device can comprise a preset small-signal analog output. The functional signal interface of the portable testing device may be connected to a functional signal interface of the variable frequency controller, and the functional signal may be set to correspond to a dedicated function of the variable frequency controller of a different model. The communication interface of the portable testing device CAN be connected to the communication interface of the variable frequency controller, the communication interface CAN comprise a 485 communication interface, a CAN communication interface and an Ethernet interface, and the connection between the communication interfaces CAN be used for communication signal transmission between the portable testing device and the variable frequency controller. The power interface of the portable testing device can be connected to the power interface of the variable frequency controller, and the power supply can comprise an alternating current power supply and a direct current power supply.

Referring to fig. 4, the portable test apparatus according to the example may perform a controller power test 20, a controller communication test 22, an analog input/output test 24, a control input/output test 26, and display a test result 28. The controller power test 20 may detect the power system of the device under test. The controller communication test 22 may parse the data of the communication bus. The analog input/output test 24 and the control input/output test 26 may include, but are not limited to, a precharge test, a three-phase voltage test, a three-phase current test, a safety chain test, a grid-side drive test, a machine-side drive test, a Crowbar test, a generator speed test, a drive plate simulation fault test, and a simulation start-up operation test. The display test result 28 may integrate the feedback data of the test and output a display of information on whether the device is normal, for example, may display specific fault information or that the device is normal. The portable testing device according to the example may automatically perform the test of the variable frequency controller in the test sequence shown in fig. 4.

The portable testing device disclosed by the disclosure adopts a box type structure, and is convenient to carry and use. The programmable logic operation unit is adopted to realize the interface reservation of multi-path common digital analog signals and communication signals, and is suitable for the detection of various variable frequency controllers. For example, by integrating multiple functional devices into one box body, the portable testing device can normally and stably operate only by a 220VAC power supply, a three-phase current signal interface, a three-phase voltage interface, a rotating speed signal interface, a driving signal interface, a +/-10V voltage source, a 0-20mA current source, a temperature signal interface and a communication interface are arranged aiming at common signals of a variable frequency controller of the wind driven generator, a touch display is adopted as a man-machine interaction interface, an operation command is received, automatic operation is carried out, and meanwhile, testing information is displayed so as to assist in processing, and the testing efficiency is improved.

Although a few embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the claims and their equivalents.

Claims

1. A portable testing device for a variable frequency controller of a wind driven generator is characterized by comprising a portable box body (10), an alternating current power supply (11), a direct current power supply (12), a first digital interface (13), a second digital interface (14), an analog interface (15) and a display (16),

wherein, the upper surface of the portable box body (10) is provided with an operation panel (10a) and an upper cover (10b) covering the operation panel, the alternating current power supply (11) and the first digital quantity interface (13) are arranged at the left part on the operation panel (10a), the second digital quantity interface (14) and the direct current power supply (12) are arranged at the right part on the operation panel (10a), the display (16) and the analog quantity interface (15) are arranged at the front part on the operation panel (10a), and the center of the operation panel (10a) is used for placing a frequency conversion controller to be tested.

2. The portable testing device of claim 1, further comprising: a controller disposed inside the portable box and electrically connected to the AC power source (11), the DC power source (12), the first digital interface (13), the second digital interface (14), the analog interface (15), and the display (16).

3. The portable testing device of claim 2, wherein the controller is one of an ARM processor, a programmable controller, a digital signal processor, and a single-chip microcomputer.

4. The portable testing device of claim 2, wherein the controller has a signal generator electrically connected to the analog quantity interface (15) and having a square wave output of an analog encoder signal, a sine wave output of an analog voltage or current signal, and a high-low level output of an analog switching signal.

5. The portable testing device of claim 4, wherein the signal generator is electrically connected to the analog interface (15) through a signal pre-processing module for amplitude modulation or drive amplification of the analog signal transmitted or received by the signal generator.

6. The portable testing device of claim 2, wherein the controller supplies power to the variable frequency controller under test via the ac power source (11) and the dc power source (12).

7. The portable testing device of claim 6, wherein the controller sends or receives test signals to or from the variable frequency controller under test through the first digital interface (13), the second digital interface (14) and the analog interface (15).

8. The portable testing device of claim 7, wherein the controller displays the test results of the variable frequency controller under test via the display (16).

9. The portable testing device of claim 2, wherein the first digital interface (13) or the second digital interface (14) of the portable testing device comprises a temperature signal interface, and the controller receives the temperature signal of the variable frequency controller to be tested through the temperature signal interface.

10. The portable testing device of claim 1, further comprising a heat dissipation fan (17), the heat dissipation fan (17) being arranged at a side of the portable case (10).