Frequency converter test method and test device

A test method and frequency converter technology, applied in the field of frequency converter testing, can solve problems such as poor accuracy

Active Publication Date: 2022-02-11
BSH ELECTRICAL APPLIANCES JIANGSU +1
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Problems solved by technology

However, current testing methods are less accurate

Method used

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  • Frequency converter test method and test device
  • Frequency converter test method and test device
  • Frequency converter test method and test device

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Embodiment Construction

[0031] At present, when testing the frequency converter, usually only the input signal of the test frequency converter is tested. When the input signal of the inverter is normal, but the inverter and the motor equipment connected to the inverter still cannot work normally, because it is impossible to further determine whether the fault is the inverter or the motor equipment, usually both the inverter and the motor equipment need to be checked. replacement, resulting in higher service costs.

[0032] In view of the above problems, the embodiment of the present invention provides a testing method for a frequency converter. When the input signal meets the first preset condition, the output signal of the frequency converter is tested. Compared with only testing the input signal of the frequency converter, it can be more efficient. Accurately determine whether the inverter is faulty, and then can more accurately replace the faulty equipment, reducing service costs.

[0033] In ord...

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Abstract

A testing method and testing device for a frequency converter. The method includes: acquiring an input signal to be input to the frequency converter, and testing the input signal; when the input signal satisfies a first preset condition, outputting a first test result, and outputting the input signal to the frequency converter, and obtain an output signal of the frequency converter, and input the output signal to a motor device adapted to the frequency converter; detect whether the output signal of the frequency converter satisfies a second preset condition, And output the second test result according to the judgment result. By applying the above solution, it is possible to more accurately determine whether the frequency converter is faulty, and then to replace the faulty equipment more accurately, thereby reducing service costs.

Description

technical field [0001] The invention relates to the field of frequency converter testing, in particular to a frequency converter testing method and a testing device. Background technique [0002] The frequency converter is a power control device that uses frequency conversion technology and microelectronics technology to control the AC motor by changing the frequency of the motor's working power supply. It is widely used in motor equipment such as compressors. [0003] In practical applications, it is often necessary to test the frequency converter to confirm whether its status is normal. However, current testing methods are less accurate. Contents of the invention [0004] A technical problem to be solved by the embodiment of the present invention is to improve the accuracy of the frequency converter test. [0005] To this end, an aspect of the present invention provides a method for testing a frequency converter, the method comprising: acquiring an input signal to be i...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor王斌梅尔·米沙
OwnerBSH ELECTRICAL APPLIANCES JIANGSU