Compressor detection method for refrigerator with inverter

Abstract

The invention discloses a compressor detection method and system for a refrigerator with an inverter, and relates to the technical field of the compressor detection for the refrigerator with the inverter. The method comprises the following steps that a frequency inverter driving unit on a frequency plate controls and applies periodic pulse voltage to U, V and W three-phase coil windings of the inverter compressor, and actually-measured resistance information and actually-measured inductance information of the inverter compressor are tested and calculated. According to the compressor detection method for the refrigerator with the inverter, standard resistance information and standard inductance information corresponding to the model of the refrigerator with the inverter are written into an inverter compressor parameter storage unit, and after a frequency conversion board detects the actually-measured resistance information and the actually-measured inductance information, whether installation is abnormal or not can be judged by comparing and judging that the deviation proportion of resistance values of three phases and inductance values of the three phases exceeds P, whether the inverter compressor has an open circuit / short circuit fault or not can be judged by judging whether any one of the three-phase resistors Ruvs, Ruws and Rvws is 0 or any resistance value of the three-phase resistors Ruvs, Ruws and Rvws is greater than or equal to Rref or not.

Description

technical field [0001] The invention belongs to the technical field of detection of frequency conversion refrigerator compressors, and in particular relates to a detection method of frequency conversion refrigerator compressors. Background technique [0002] At present, in the production process of frequency conversion refrigerators, a frequency conversion board and a frequency conversion compressor need to be installed, and the frequency conversion board is used to drive the frequency conversion compressor. Then, when installing an inverter compressor on the inverter refrigerator production line, for a certain refrigerator model, it needs to be installed with a certain type of inverter compressor, and at the same time, the drive software in the inverter board is also corresponding to this model of inverter compressor. [0003] In the prior art, there is no method for the inverter refrigerator to automatically detect whether the model of the inverter compressor installed in ...

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Problems solved by technology

[0006] The object of the present invention is to provide a method and system for detecting frequency conversion refrigerator compressors. By comparing and judging whether the deviation ratio of the resistance value of each phase of the three phases and the inductance value of the three phases exceeds P, it is judged whether the installation is abnormal; Any resistance value of phase resistance Ruvs, Ruws, Rvws is 0 or any resistance value is greater than or equal to Rref to judge whether there is an open circuit / short circuit fault in the inverter compressor, which solves the difficulty in detecting the abnormal installation of the existing inverter board and the failure of the inverter compressor Hard to detect problems

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