Universal loader for frequency conversion board

Abstract

The utility model belongs to the technical field of frequency conversion boards, and discloses a frequency conversion board universal loader, which comprises a frequency conversion board, the frequency conversion board is electrically connected with a socket I, the socket I is electrically connected with a loader, and the loader is electrically connected with a three-phase voltmeter and a damping coil respectively. According to the utility model, a ganged switch and a high-power resistor are arranged, 1-380V three-phase voltage output by a frequency converter is sent to the inside of a frequency conversion board through a socket I, a three-phase voltage universal loader is divided into two paths, one path is directly sent to a three-phase voltmeter for monitoring the output voltage of the frequency conversion board, and the other path passes through three damping coils and then passes through a three-phase rectifier bridge for monitoring the output voltage of the frequency conversion board. Alternating current is rectified into direct current, and the direct current passes through the three two-connection high-power switches and is used for respectively controlling the three high-power resistors to consume power voltage output by the frequency conversion board so as to realize detection of operation states of the simulation frequency conversion board under low, medium and high loads and simulate a real working state.

Description

Technical Field

[0001] The utility model belongs to the technical field of frequency conversion boards, in particular to a universal loader for frequency conversion boards. Background Art

[0002] A universal inverter board loader is a test and loading device that can be used with a variety of inverter board models. It can be adjusted and configured to suit different inverter board models for testing and maintenance. The universal loader can simulate motor loads and evaluate the performance and stability of the inverter board.

[0003] With the continuous development of frequency conversion technology, frequency conversion air conditioners and inverters are widely used in household and commercial industrial equipment. As a result, a large number of machines have expired and need to be repaired. When engineers are performing repairs, testing of frequency conversion circuit boards is particularly important. The biggest challenge facing the majority of maintenance personnel is how to simulate the actual working conditions and detect the quality of the frequency conversion board, so it needs to be improved. Utility Model Content

[0004] In order to solve the problems raised in the above background technology, the utility model provides a universal loader for a frequency conversion board.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a universal loader for a frequency conversion board, comprising a frequency conversion board, wherein the frequency conversion board is electrically connected to a socket 1, the socket 1 is electrically connected to a loader, the loader is electrically connected to a three-phase voltmeter and a damping coil, respectively, the damping coil is electrically connected to a three-phase rectifier bridge, the three-phase rectifier bridge is electrically connected to a double switch, and the double switch is electrically connected to a high-power resistor.

[0006] Preferably, the double switch is electrically connected to a heat dissipation fan, two heat dissipation fans are provided, and both of the heat dissipation fans are arranged outside the high-power resistor.

[0007] Preferably, the other side of the heat dissipation fan is electrically connected to a second socket, and the second socket adopts a 220V power input interface.

[0008] Preferably, the socket 1 is set as a UVW inverter power input interface, and the socket 1 passes through a 1-380V three-phase voltage.

[0009] Preferably, three damping coils are provided, and all three damping coils are electrically connected to a three-phase rectifier bridge.

[0010] Preferably, three of the dual switches and three of the high-power resistors are provided, and the three dual switches control three high-power resistors respectively.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] The utility model sets a double switch and a high-power resistor, and the 1-380V three-phase voltage output by the inverter is sent into the interior of the frequency conversion board through a socket. The three-phase voltage universal loader is divided into two paths. One path is directly sent to a three-phase voltmeter for monitoring the output voltage of the frequency conversion board, and the other path passes through three damping coils and then passes through a three-phase rectifier bridge. After the AC power is rectified, it is converted into DC power. The DC power passes through three two-way high-power switches to respectively control three high-power resistors to consume the power voltage output from the frequency conversion board, so as to realize the detection of the operating status of the simulated frequency conversion board under low, medium and high loads, simulating the real working state. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the circuit diagram of the frequency conversion board loader of the utility model.

[0014] In the figure: 1. Frequency conversion board; 2. Socket 1; 3. Three-phase voltmeter; 4. Damping coil; 5. Loader; 6. Double switch; 7. High-power resistor; 8. Cooling fan; 9. Socket 2; 10. Three-phase rectifier bridge. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] Example 1

[0017] like Figure 1 FIG. 1 is a first embodiment of the present invention, which provides a universal loader for a frequency conversion board, including a frequency conversion board 1, the frequency conversion board 1 being electrically connected to a socket 1 2, the socket 1 2 being electrically connected to a loader 5, the loader 5 being electrically connected to a three-phase voltmeter 3 and a damping coil 4, respectively, the damping coil 4 being electrically connected to a three-phase rectifier bridge 10, the three-phase rectifier bridge 10 being electrically connected to a double switch 6, and the double switch 6 being electrically connected to a high-power resistor 7;

[0018] The inverter sends the output three-phase voltage UVW to the inverter board 1 through socket 1 2, and then the three-phase voltage is introduced into the loader 5, and the voltage is divided into two paths. One path is directly sent to the three-phase voltmeter for real-time monitoring of the output voltage of the inverter board 1. The other path passes through the damping coil 4 and the three-phase rectifier bridge 10 in sequence, and is rectified into direct current. The double switch 6 is used to control the high-power resistor 7 to consume the power voltage output from the inverter board 1 in the two-phase direct current load. It is used to realize the detection of the operating status of the inverter board 1 under low, medium and high loads, thereby facilitating the judgment of the quality of the inverter board.

[0019] Among them, socket 1-2 is set as the UVW inverter power input interface, and socket 1-2 passes 1-380V three-phase voltage;

[0020] In a three-phase AC system, voltage is usually represented by the letters U, V, and W to indicate the three different phases. These represent the three independent AC voltage sources in the three-phase power supply, and their phases are separated by 120 degrees. When connecting three-phase equipment, it is necessary to select the appropriate connection method according to the requirements of the equipment and ensure the correct phase sequence for easy use and testing.

[0021] There are three damping coils 4, and all three damping coils 4 are electrically connected to the three-phase rectifier bridge 10;

[0022] The design of the three damping coils 4 allows them to optimize the startup process of the device, reduce shock and vibration during startup, and maintain smooth operation when the load changes to avoid damage. At the same time, the three-phase rectifier bridge 10 is used to effectively convert the input AC power into DC power, which is then converted into AC power with variable frequency and amplitude to achieve energy saving and precise control, thereby facilitating the detection of the quality of the frequency converter board.

[0023] There are three double switches 6 and three high-power resistors 7, and the three double switches 6 control three high-power resistors 7 respectively.

[0024] The alternating current is converted into direct current through a three-phase rectifier bridge 10. The direct current passes through three two-pair double switches 6 to control three high-power resistors 7, R1, R2, and R3, respectively, to consume the power voltage output from the frequency converter board 1, and is used to simulate the detection of the frequency converter board's operating status under low, medium, and high loads.

[0025] Example 2

[0026] like Figure 1 As shown, this embodiment includes the features of embodiment 1, and the distinguishing technical feature is that the double switch 6 is electrically connected to the heat dissipation fan 8, two heat dissipation fans 8 are provided, and both heat dissipation fans 8 are arranged outside the high-power resistor 7;

[0027] By connecting the m1 and m2 cooling fans 8 to the other side of the double switch 6, m1 and m2 will start regardless of which gear is loaded, thus achieving the heat dissipation function for the high-power resistor 7 and preventing damage to the frequency converter board 1 caused by overheating;

[0028] Among them, the other side of the heat dissipation fan 8 is connected to the socket 2 9, and the socket 2 9 adopts a 220V power input interface;

[0029] The 220V power input interface is the power supply interface of the cooling fan 8, which is used to adapt to specific voltage and current requirements to ensure that the device can receive power safely.

[0030] The working principle and use process of this utility model:

[0031] First, the 1-380V three-phase voltage UVW output by the inverter is sent to the inverter board 1 through socket 1 2. The three-phase voltage is then divided into two paths by the loader 5. One path is sent to the three-phase voltmeter 3, which monitors the inverter board output voltage in real time. At the same time, the other path passes through the three damping coils 4 of L1, L2 and L3, and then passes through the three-phase rectifier bridge 10 to be rectified into DC power. The DC load uses three double switches 6 of S1, S2 and S3 to control the three high-power resistors 7 of R1, R2 and R3 respectively to consume the power voltage output from the inverter board 1, which is used to simulate the operating status of the inverter board under low, medium and high loads. In addition, the cooling fans M1 and M2 will start regardless of the load level, realizing the heat dissipation function of the high-power resistors R1, R2 and R3, thereby facilitating personnel to detect the quality of the inverter board and simulate the real working status, bringing convenience to personnel.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A universal loader for a frequency conversion board, comprising a frequency conversion board (1), characterized in that: The frequency conversion board (1) is electrically connected to a socket 1 (2), the socket 1 (2) is electrically connected to a loader (5), the loader (5) is electrically connected to a three-phase voltmeter (3) and a damping coil (4), the damping coil (4) is electrically connected to a three-phase rectifier bridge (10), the three-phase rectifier bridge (10) is electrically connected to a double switch (6), and the double switch (6) is electrically connected to a high-power resistor (7).

2. A universal loader for frequency conversion boards according to claim 1, characterized in that: The double switch (6) is electrically connected to a heat dissipation fan (8), and two heat dissipation fans (8) are provided. Both heat dissipation fans (8) are provided outside the high-power resistor (7).

3. The universal loader for frequency conversion board according to claim 2, characterized in that: The other side of the heat dissipation fan (8) is electrically connected to a second socket (9), and the second socket (9) adopts a 220V power input interface.

4. The universal loader for frequency conversion board according to claim 1, characterized in that: The socket one (2) is configured as a UVW inverter power input interface, and the socket one (2) passes a 1-380V three-phase voltage.

5. The universal loader for frequency conversion board according to claim 1, characterized in that: Three damping coils (4) are provided, and the three damping coils (4) are all electrically connected to a three-phase rectifier bridge (10).

6. The universal loader for frequency conversion board according to claim 1, characterized in that: Three of the double switches (6) and three of the high-power resistors (7) are provided, and the three double switches (6) control three high-power resistors (7) respectively.

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