Hardware-interlocking variable-frequency drive driving circuit and variable-frequency drive

The utility model discloses a hardware-interlocking variable-frequency drive driving circuit and a variable-frequency drive. The variable-frequency drive driving circuit comprises upper bridge arm driving optical couplers and lower bridge arm driving optical couplers. The variable-frequency drive driving circuit further comprises a microprocessor, a level converter and filtering capacitors, wherein the microprocessor is used for outputting a PWM driving signal, the level converter is used for receiving the PWM driving signal and carrying out corresponding level conversion, the level converter has paired differential PWM signal output ends, the two differential PWM signal output ends in each pair are connected to one upper bridge arm driving optical coupler and are connected to the corresponding lower bridge arm driving optical coupler in a logically opposite way, and each filtering capacitor is connected between the two differential PWM signal output ends in pair. According to the variable-frequency drive dri