A method for calibrating DC inverter compressor winding calculation temperature

Abstract

The invention relates to a calibration technology for calculating the winding temperature of a DC variable-frequency compressor, which discloses a method for calibrating the calculated temperature of the winding of a DC variable-frequency compressor, and solves the calculation temperature of the winding and the actual winding temperature caused by the individual parameter deviation of the DC variable-frequency compressor. To solve the problem of excessive deviation, obtain a calculated value of winding temperature that is closer to the real situation. In the present invention, the temperature difference obtained by direct temperature measurement of the winding temperature and exhaust temperature of the compressor of the air conditioner outdoor unit under the standard detection environment is used as the calibration temperature difference. The winding temperature of the compressor is obtained by calculation, and the temperature difference obtained by measuring the discharge temperature is compared with the calibrated temperature difference, so as to obtain the deviation value for each outdoor unit as the winding temperature correction value. After that, during the use of the outdoor unit, use The winding temperature correction value corrects the calculated winding temperature, so that the winding temperature closer to the real situation can be obtained.

Description

technical field [0001] The invention relates to a calibration technology for calculating the temperature of a winding of a DC variable frequency compressor, in particular to a method for calibrating the calculated temperature of a winding of a DC variable frequency compressor. Background technique [0002] Accurately knowing the winding temperature of the DC inverter compressor is of great significance for the self-inspection and control of the outdoor unit of the air conditioner. However, due to the limitation of the internal working environment of the DC inverter compressor, there is no temperature sensor inside the conventional DC inverter compressor, so it cannot be passed. Direct measurement to obtain compressor winding temperature. [0003] In the prior art, some manufacturers have proposed a scheme of estimating the temperature of the compressor winding through the change of a certain temperature-related characteristic parameter inside the compressor. For example, th...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to propose a method for calibrating the calculated temperature of the winding of the DC variable frequency compressor, to solve the problem that the deviation between the calculated temperature of the winding and the actual winding temperature is too large due to the deviation of the individual parameters of the DC variable frequency compressor, and to obtain Winding temperature calculations that are closer to the real situation