Compressor leakage current suppression method and device, compressor and medium

The invention discloses a compressor leakage current suppression method and device, a compressor and a medium. The method comprises the steps that leakage current of the compressor is obtained in real time; controlling the frequency of the compressor through a PID (Proportion Integration Differentiation) controller according to the first control parameter so as to enable the leakage current to reach a first-order steady state; if the leakage current reaches a first-order steady state, controlling the frequency of the compressor through the PID controller according to a second control parameter so as to enable the leakage current to reach a second-order steady state; and if the leakage current reaches the second-order steady state, controlling the compressor to increase the frequency until the frequency of the compressor reaches the steady-state frequency so as to enable the leakage current to reach a third-order steady state. The frequency of the compressor is controlled through the PID controller, and the le