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Simulation variable-frequency motor for variable-frequency board testing and variable-frequency board simulation testing method

A frequency conversion motor and simulation test technology, applied in the field of frequency conversion board testing, can solve the problems of unsuitable maintenance testing, complicated types of compressors, and incompatibility, so as to improve the efficiency of maintenance testing, reduce the cost of maintenance equipment, and save time and energy. Effect

Pending Publication Date: 2021-03-12
马允全
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the cost of the compressor is too high, the structure is special, and the original compressor has a compressed air pump inside, this air pump cannot run for a long time in the air without lubricating oil, which will cause damage to the pump body and lead to the scrapping of the entire compressor, so it is not recommended Suitable for maintenance testing
Furthermore, because the types of compressors are too complicated and not compatible with each other, the cost of maintenance equipment is increased, the time and energy of maintenance personnel are wasted, and the maintenance efficiency is reduced.
[0003] At the same time, when the original compressor is used for testing in the prior art, because the power consumption is very small, the original power of the machine cannot be achieved when the frequency conversion board is repaired and tested, and the complete test of the frequency conversion board cannot be achieved. The hidden faults of the frequency conversion board It cannot be discovered in time. Only when the frequency conversion board is installed on the original air conditioner can the hidden fault of the frequency conversion board be found, which will cause secondary rework and bring energy and economic losses to the maintenance personnel.

Method used

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  • Simulation variable-frequency motor for variable-frequency board testing and variable-frequency board simulation testing method
  • Simulation variable-frequency motor for variable-frequency board testing and variable-frequency board simulation testing method
  • Simulation variable-frequency motor for variable-frequency board testing and variable-frequency board simulation testing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] refer to Figure 1 to Figure 3 , a simulation frequency conversion motor used for frequency conversion board testing of the present invention includes a casing 1, a main motor 2, a load generator 3, an adjustable electronic load 4, a power supply 5 and a test signal acquisition device 6.

[0029] The main motor 2 is used to electrically connect with the frequency conversion board 7 and its operation is controlled by the frequency conversion board 7 . The load generator 3 is formed with a second terminal group 31 for connecting the adjustable electronic load 4 . Both the main motor 2 and the load generator 3 are three-phase windings, the first terminal group 21 includes U, V, W three-phase terminals, and the second terminal group 31 includes a neutral terminal L and a live terminal N. The central shaft 8 of the main motor 2 and the load generator 3 is integrally formed, the main motor 2 and the load generator 3 are arranged in the housing 1, and the housing 1 is provide...

Embodiment 2

[0037] refer to Figure 4 , The difference between this embodiment and Embodiment 1 is that: the central shaft 22 of the main motor and the central shaft 32 of the load generator are connected by a coupling 9 for synchronous rotation.

Embodiment 3

[0039] The difference between this embodiment and Embodiment 1 is that the test signal acquisition device 6 includes a current detection device arranged at the input end and output end of the frequency conversion board 7 for detecting the input current and output current of the frequency conversion board, and is arranged at the input end of the frequency conversion board 7 And the output terminal is used to detect the power detection device of the frequency conversion board input power and output power, and the torque detection device connected to the main motor 2 and the load generator 3 on the shaft 8 . The current detection device adopts a current transformer or an ammeter, the power detection device adopts a power meter, and the torque detection device adopts the structure of the prior art.

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Abstract

The invention relates to a simulation variable frequency motor for variable frequency board testing and a variable frequency board simulation testing method. The simulation variable frequency motor used for frequency conversion board testing comprises a main body motor, a load generator and an adjustable electronic load, and the main body motor is used for being electrically connected with a frequency conversion board and controlled by the frequency conversion board to operate; the load generator is used for connecting an adjustable electronic load; and the main body motor and the load generator take middles shaft as rotors respectively, and the middle shafts of the main body motor and the load generator are synchronously and rotationally connected with each other. The output power of thefrequency conversion board can be changed by adjusting the power of the adjustable electronic load, so that the real current of the frequency conversion board during working can be simulated, and thepurpose of simulation test of the frequency conversion board is achieved. The method can be universally used for maintenance and test of various brands and various models of frequency conversion boards, reduces the maintenance equipment cost, simplifies the operation steps, saves the time and energy of maintenance personnel, and improves the maintenance and test efficiency. Complete testing of thefrequency conversion board can be realized, hidden faults of the frequency conversion board are eliminated, and the reliability of frequency conversion board testing is improved.

Description

technical field [0001] The invention relates to the technical field of frequency conversion board testing, in particular to a simulation frequency conversion motor and a frequency conversion board simulation testing method for frequency conversion board testing. Background technique [0002] In the past, when repairing different types of air-conditioning inverter boards, it was necessary to use different brands and models of compressors that match them for testing. Because the cost of the compressor is too high, the structure is special, and the original compressor has a compressed air pump inside, this air pump cannot run for a long time in the air without lubricating oil, which will cause damage to the pump body and lead to the scrapping of the entire compressor, so it is not recommended Suitable for maintenance testing. Furthermore, because the types of compressors are too complicated and not compatible with each other, the cost of maintenance equipment is increased, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G01R31/28
CPCG01R31/00G01R31/282G01R31/2825
Inventor 马允全
Owner 马允全