Double frequency ripple current control method and device and computer equipment

The invention relates to a double-frequency ripple current control method and device and computer equipment, the double-frequency ripple current control method is applied to a two-stage inverter circuit, the two-stage inverter circuit comprises a resonant conversion module and a bus capacitor, and the bus capacitor is used for carrying out anti-interference processing on a signal input to an inverter module; the method includes: acquiring output voltage of a bus capacitor and resonant frequency of a resonant conversion module; amplifying and filtering the output voltage to obtain a frequency regulation variable; carrying out superposition processing on the resonant frequency and the frequency regulation quantity to obtain a target working frequency; and controlling the resonant conversion module to work at the target working frequency so as to adjust the output impedance of the resonant conversion module at the frequency doubling position, thereby suppressing the ripple current at the frequency doubling posit