Resonance suppression method, device and equipment of LCL filter and medium

The invention discloses a resonance suppression method, device and equipment of an LCL filter and a medium, and belongs to the technical field of power electronics, and the method comprises the steps: generating a target harmonic wave according to a real-time phase of a power grid, and obtaining an inductance value of the power grid; determining a resonant frequency value of an LCL filter in the PWM rectifier according to the inductance value of the power grid, and determining the resonant frequency value of the LCL filter as a cut-off frequency of a high-pass filter; when the LCL filter generates high-frequency oscillation, extracting a high-frequency oscillation wave of the LCL filter by using a high-pass filter to obtain a target oscillation wave; and generating a target modulation wave according to the target oscillation wave, the target harmonic wave and the three-phase voltage reference wave, and suppressing high-frequency oscillation generated by the LCL filter by using the target modulation wave. The