Automatic current sharing control method based on low-voltage ripple interleaving high-gain converter

The invention provides an automatic current sharing control method based on an interleaving parallel high-gain direct-current converter, and aims at solving the problem that the voltage gain range is limited due to the fact that a low-voltage ripple interleaving parallel high-gain direct-current converter is not subjected to current sharing under the condition of low duty ratio in a traditional interleaving parallel control method. According to the control method, on the basis of the ampere-second balance principle of interleaved parallel phase switched capacitors, the magnitude of inductive current of each phase is changed by changing the charging and discharging time of an intermediate boost capacitor, so that the inductive current of each phase is equally divided. According to the current-sharing control method, a new working mode is not introduced on the basis of an original circuit working mode, current-sharing compensation feedback does not need to be conducted through a current sensor, control freedom