Method and device for determining direct current ripple current, electronic equipment and storage medium

The invention relates to a DC ripple current determination method and device, electronic equipment and a storage medium. The method comprises the following steps: firstly, determining the current time step direct current ripple voltage of the converter according to the previous time step direct current ripple current, the current three-phase commutation inductance, the current three-phase fundamental wave voltage and the fundamental wave angular velocity of the converter; then, the current time step direct current ripple current is determined according to the previous time step direct current ripple current, the current time step direct current ripple voltage, the average impedance of the converter valve and the equivalent impedance of a direct current line and a direct current filter in the converter; and if it is determined that the current time-step direct current ripple current and the previous time-step direct current ripple current meet convergence iteration conditions, the current time-step direct curr