Frequency converter test platform

Abstract

The utility model discloses a frequency converter test platform, comprising an air switch, the air switch is connected with a power supply, a first frequency converter and a second frequency converter, the air switch is internally provided with a wiring terminal, a first lead is connected between the wiring terminal and the power supply, the first frequency converter is connected with a first motor, and the second frequency converter is connected with a second motor. The first frequency converter is connected with a first motor, the second frequency converter is connected with a second motor, second wires are connected between the first frequency converter and the first motor and between the second frequency converter and the second motor, and the output end of the power supply is electrically connected with the input end of the air switch through the first wire and the wiring terminal and is subjected to frequency conversion adjustment through the first frequency converter and the second frequency converter. According to the frequency converter test platform provided by the utility model, the normal frequency of 50Hz and 550W is adjusted to about 25Hz through the frequency converter, the speed of all machines is not changed, the monitoring and the speed regulation are better carried out, the conditions of overcurrent, overvoltage or overload are not easy to occur, and the use performance is more excellent.

Description

Technical Field

[0001] This utility model relates to the field of frequency converter testing technology, and in particular to a frequency converter testing platform. Background Technology

[0002] A frequency converter test platform is a supporting device for testing the speed regulation of frequency converters. A frequency converter is a power control device that uses the switching action of power semiconductor devices to convert power frequency into electrical energy of another frequency. It can realize functions such as soft starting of AC asynchronous motors, variable frequency speed regulation, improving operating accuracy, changing power factor, and overcurrent / overvoltage / overload protection. With the continuous development of technology, people have increasingly higher requirements for the manufacturing process of frequency converter test platforms.

[0003] Existing motor platforms have certain drawbacks. First, they do not have frequency converters and the motors are directly connected to circuit breakers. They rely on mechanical speed regulation, which cannot effectively control speed in reverse or forward motion, and is prone to overcurrent, overvoltage, or overload, which negatively impacts actual use. Therefore, we propose a frequency converter testing platform. Utility Model Content

[0004] Technical problem solved: In view of the shortcomings of the existing technology, this utility model provides a frequency converter test platform. By adjusting the normal 50Hz 550W to about 25Hz through the frequency converter, the speed of all machines remains unchanged, which can better monitor and adjust the speed, and is less likely to cause overcurrent, overvoltage or overload. The performance is better and can effectively solve the problems in the background technology.

[0005] Technical Solution: To achieve the above objectives, the technical solution adopted by this utility model is as follows: a frequency converter testing platform, including a circuit breaker, wherein the circuit breaker is connected to a power supply, a first frequency converter and a second frequency converter, the circuit breaker is provided with a wiring terminal, a first wire is connected between the wiring terminal and the power supply, the first frequency converter is connected to a first motor, the second frequency converter is connected to a second motor, and a second wire is connected between the first frequency converter and the first motor and between the second frequency converter and the second motor.

[0006] Preferably, the output terminal of the power supply is electrically connected to the input terminal of the circuit breaker via a first wire and a terminal block, and the frequency is adjusted by a first frequency converter and a second frequency converter.

[0007] Preferably, the first frequency converter and the second frequency converter are frequency-adjusted to 25Hz and connected to the first motor and the second motor.

[0008] Preferably, a power monitoring and analysis unit is connected to the positions of the second wire, the first motor, and the second motor. The power monitoring and analysis unit is equipped with a monitoring and control circuit board, which includes a first power monitor, a first speed monitor, a second power monitor, a second speed monitor, a data acquisition unit, a display, a controller, an alarm, and a central processing unit.

[0009] Preferably, the first power monitor, the first speed monitor, the second power monitor, and the second speed monitor are all connected to a data acquisition unit, the data acquisition unit is connected to a central processing unit, and the central processing unit is connected to a display, a controller, and an alarm.

[0010] Preferably, the output terminals of the first power monitor, the first speed monitor, the second power monitor, and the second speed monitor are electrically connected to the input terminal of the central processing unit via a data acquisition unit, and the output terminal of the central processing unit is electrically connected to the input terminals of the display, the controller, and the alarm.

[0011] Beneficial effects: Compared with the prior art, this utility model provides a frequency converter testing platform with the following beneficial effects: This frequency converter testing platform adjusts the normal 50Hz 550W to about 25Hz through the frequency converter, and the speed of all machines remains unchanged, which can better monitor and adjust the speed. It is less likely to cause overcurrent, overvoltage or overload, and the performance is better. The entire frequency converter testing platform has a simple structure, is easy to operate, and the effect is better than the traditional method. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a frequency converter testing platform according to the present invention.

[0013] Figure 2 This is a schematic diagram of the connection between two sets of frequency converters in a frequency converter testing platform according to the present invention.

[0014] Figure 3 This is a schematic diagram of the monitoring and control circuit board in a frequency converter testing platform according to the present invention.

[0015] In the diagram: 1. Circuit breaker; 2. Terminal block; 3. First wire; 4. Power supply; 5. First frequency converter; 6. Second frequency converter; 7. Second wire; 8. First motor; 9. Second motor; 10. Power monitoring and analysis unit; 11. Monitoring and control circuit board; 12. First power monitor; 13. First speed monitor; 14. Second power monitor; 15. Second speed monitor; 16. Data acquisition unit; 17. Display; 18. Controller; 19. Alarm; 20. Central processing unit. Detailed Implementation

[0016] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. However, those skilled in the art will understand that the embodiments described below are only some embodiments of this utility model, not all embodiments, and are only used to illustrate this utility model, and should not be regarded as limiting the scope of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. Where specific conditions are not specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall be followed. Where the manufacturers of reagents or instruments are not specified, they are all conventional products that can be purchased commercially.

[0017] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] like Figure 1-3 As shown, a frequency converter test platform includes an air circuit breaker 1, which is connected to a power supply 4, a first frequency converter 5, and a second frequency converter 6. An internal terminal block 2 is provided in the air circuit breaker 1, and a first wire 3 connects the terminal block 2 to the power supply 4. The first frequency converter 5 is connected to a first motor 8, and the second frequency converter 6 is connected to a second motor 9. Second wires 7 connect the first frequency converter 5 to the first motor 8 and the second frequency converter 6 to the second motor 9. The frequency converter adjusts the normal 50Hz 550W to approximately 25Hz, maintaining the same speed for all machines. This allows for better monitoring and speed adjustment, reduces the likelihood of overcurrent, overvoltage, or overload, and provides superior performance.

[0020] Furthermore, the output terminal of the power supply 4 is electrically connected to the input terminal of the circuit breaker 1 through the first wire 3 and the terminal block 2, and is adjusted by frequency conversion through the first frequency converter 5 and the second frequency converter 6.

[0021] Furthermore, the first frequency converter 5 and the second frequency converter 6 are frequency-adjusted to 25Hz and connected to the first motor 8 and the second motor 9.

[0022] Furthermore, a power monitoring and analysis unit 10 is connected to the positions of the second wire 7, the first motor 8, and the second motor 9. The power monitoring and analysis unit 10 is equipped with a monitoring and control circuit board 11, which is equipped with a first power monitor 12, a first speed monitor 13, a second power monitor 14, a second speed monitor 15, a data acquisition unit 16, a display 17, a controller 18, an alarm 19, and a central processing unit 20.

[0023] Furthermore, the first power monitor 12, the first speed monitor 13, the second power monitor 14, and the second speed monitor 15 are all connected to the data acquisition unit 16. The data acquisition unit 16 is connected to the central processing unit 20. The central processing unit 20 is connected to the display 17, the controller 18, and the alarm 19.

[0024] Furthermore, the output terminals of the first power monitor 12, the first speed monitor 13, the second power monitor 14, and the second speed monitor 15 are electrically connected to the input terminal of the central processing unit 20 through the data acquisition unit 16, and the output terminal of the central processing unit 20 is electrically connected to the input terminal of the display 17, the controller 18, and the alarm 19.

[0025] Working Principle: This utility model includes an air switch 1, a terminal block 2, a first wire 3, a power supply 4, a first frequency converter 5, a second frequency converter 6, a second wire 7, a first motor 8, a second motor 9, a power monitoring and analysis unit 10, a monitoring and control circuit board 11, a first power monitor 12, a first speed monitor 13, a second power monitor 14, a second speed monitor 15, a data acquisition unit 16, a display 17, a controller 18, an alarm 19, and a central processing unit 20. During use, the power supply 4 connects to the first frequency converter 5 and the second frequency converter 6 through the air switch 1. The first frequency converter 5 and the second frequency converter 6 adjust the power from the normal 50Hz 550W to approximately 25Hz, maintaining the same speed for all machines. This allows for better monitoring and speed adjustment, reducing the likelihood of overcurrent, overvoltage, or overload, resulting in superior performance.

[0026] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A frequency converter test platform, comprising a circuit breaker (1), characterized in that: The circuit breaker (1) is connected to a power supply (4), a first frequency converter (5) and a second frequency converter (6). The circuit breaker (1) is provided with a terminal block (2). A first wire (3) is connected between the terminal block (2) and the power supply (4). The first frequency converter (5) is connected to a first motor (8). The second frequency converter (6) is connected to a second motor (9). A second wire (7) is connected between the first frequency converter (5) and the first motor (8) and between the second frequency converter (6) and the second motor (9).

2. The inverter testing platform according to claim 1, characterized in that: The output terminal of the power supply (4) is electrically connected to the input terminal of the circuit breaker (1) through the first wire (3) and the terminal block (2), and is adjusted by frequency conversion through the first frequency converter (5) and the second frequency converter (6).

3. The inverter testing platform according to claim 1, characterized in that: The first frequency converter (5) and the second frequency converter (6) are frequency-adjusted to 25Hz and connected to the first motor (8) and the second motor (9).

4. The inverter testing platform according to claim 1, characterized in that: The second conductor (7), the first motor (8), and the second motor (9) are connected to a power monitoring and analysis unit (10). The power monitoring and analysis unit (10) is equipped with a monitoring and control circuit board (11). The monitoring and control circuit board (11) is equipped with a first power monitor (12), a first speed monitor (13), a second power monitor (14), a second speed monitor (15), a data acquisition unit (16), a display (17), a controller (18), an alarm (19), and a central processing unit (20).

5. The inverter testing platform according to claim 4, characterized in that: The first power monitor (12), the first speed monitor (13), the second power monitor (14) and the second speed monitor (15) are all connected to the data acquisition unit (16), the data acquisition unit (16) is connected to the central processing unit (20), and the central processing unit (20) is connected to the display (17), the controller (18) and the alarm (19).

6. The inverter testing platform according to claim 5, characterized in that: The output terminals of the first power monitor (12), the first speed monitor (13), the second power monitor (14), and the second speed monitor (15) are electrically connected to the input terminal of the central processing unit (20) through the data acquisition unit (16). The output terminal of the central processing unit (20) is electrically connected to the input terminal of the display (17), the controller (18), and the alarm (19).

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