CONTROL METHOD AND APPARATUS FOR VARIABLE FREQUENCY AIR CONDITIONER AND VARIABLE FREQUENCY AIR CONDITIONER

摘要

Disclosed in the present application are a control method and apparatus for a variable frequency air conditioner and a variable frequency air conditioner, belonging to the field of compressors. Said method comprises: calculating a target frequency f according to an inner coil temperature Tp of an air conditioner indoor unit; and determining whether the target frequency f is greater than a winding demarcation point frequency f4, if f is greater than or equal to f4, selecting a first winding mode of an electric motor and enabling an air conditioner compressor to operate to the winding demarcation point frequency f4, switching to a second winding mode of the electric motor, enabling the air conditioner compressor sequentially operating to the frequencies of three stall platforms to continue for a preset time, respectively, and enabling the air conditioner compressor to operate to the target frequency f. The present invention determines whether a target frequency f is greater than a winding demarcation point frequency f4, so as to control an electric motor of an air conditioner compressor to be connected to a first winding mode or a second winding mode, and then control the operating frequency and operating time of the compressor on each stall platform (oil return platform), facilitating a stable and reliable operation of the compressor.