Active damping control system for feedback network access current of negative band-pass filter

The utility model discloses a negative band-pass filter feedback network access current active damping control system, and relates to a control system composed of an LCL type grid-connected inverter main control loop and a negative band-pass filter feedback network access current active damping branch. The sampled network access current passes through the negative band-pass filter module and the damping branch feedback coefficient module to generate a first output signal; the network access current and the given reference current are subtracted by a subtracter, and an obtained current deviation signal passes through a current controller to generate a second output signal; and the first output signal and the second output signal are subtracted by a subtracter to obtain a modulated wave, and the modulated wave is input to a PWM module to generate a driving signal to drive an inverter power device. The negative band-pass filter feedback network access current active damping method provided by the utility model c