Driving signal generation method of three-phase BUCK active PFC circuit

The invention discloses a driving signal generation method of a three-phase BUCK active PFC circuit. The driving signal generation method comprises the steps that a control module sends an initial PWM driving signal in a preset wave sending mode; the initial PWM driving signal is generated based on triangular carrier assistance; a logic gate circuit is adopted to convert the initial PWM driving signal to obtain a target PWM driving signal, so that three phases of PWM driving signals in the target PWM driving signal are all low levels in a first time period, and at least two phases are high levels in a second time period; wherein the first time period is a time period corresponding to a peak value of the triangular carrier wave or a time period corresponding to a valley value of the triangular carrier wave, and the second time period is a time period except the first time period in a carrier wave period. According to the driving signal generation method, the voltage withstanding requirement of a switching devi