Method for determining carrier frequency of inverter air conditioner and inverter air conditioner

Abstract

The invention discloses a method for determining the carrier frequency of an inverter air conditioner and the inverter air conditioner. The method comprises the following steps: determining the recommended carrier frequency range (fcmin, fcmax) of a component of a frequency converter; determining the maximum energy efficiency carrier frequency fci corresponding to the running frequency fi of an air conditioner performance testing point compressor according to the range (fcmin, fcmax); determining the lowest noise and maximum energy efficiency carrier frequencies from fc1 and fc2 to fcn respectively corresponding to the running frequencies from f1 and f2 to fn according to the recommended carrier frequency range (fcmin, fcmax) and the running frequencies from f1 and f2 to fn at which the selected compressor possibly run, wherein if the running frequency fr of the compressor is not larger than fi, the carrier frequency is fci; if the fr is equal to f1, the carrier frequency is fc1; if the fr is larger than fi and smaller than f1, the carrier frequency is linearly varied between the fci and fc1, and so on. The method for determining the carrier frequency of the inverter air conditioner, provided by the invention take into account of two special properties, namely the energy efficiency and noise, so that the inverter air conditioner can give the uttermost play to the energy efficiency during low frequency running, and can guarantee low noise during high-frequency running.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a method for determining the carrier frequency of an inverter air conditioner and an inverter air conditioner using the carrier frequency. Background technique [0002] At present, the carrier frequency used by inverter air conditioners is the carrier frequency recommended by the inverter manufacturer, and has not been adjusted according to the actual situation on site. Generally, the carrier frequency recommended by the inverter manufacturer may not be able to exert the maximum effect on the inverter air conditioner, but can only ensure its normal operation. Therefore, the setting of the carrier frequency may cause the air conditioning system to fail to achieve better energy efficiency, or in Specific frequency bands generate loud noise. Contents of the invention [0003] In view of the above-mentioned current state of the art, the technical problem to be solved by t...

AI Technical Summary

Problems solved by technology

Generally, the carrier frequency recommended by the inverter manufacturer may not be able to exert the maximum effect on the inverter air conditioner, but can only ensure its normal operation. Therefore, the setting of the carrier frequency may cause the air conditioning system to fail to achieve better energy efficiency, or in Specific frequency bands generate loud noise

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