Single current sensor current sharing control for interleaved parallel bidirectional converters

To solve the problem of current sharing in interleaved parallel bidirectional BUCK-BOOST converters, this paper uses a current sharing control method that combines a voltage outer loop with a single current sensor. Based on the two-phase inductance current, the duty cycle compensation amount is obtained, and the current sharing of the two-phase inductance current is achieved by dynamically compensating the common duty cycle. Simulation and experiments have shown that in the BUCK mode and BOOST mode of the interleaved parallel bidirectional BUCK-BOOST converter, the current sharing control strategy described in this article can achieve the current sharing of the two-phase inductance.