A fixed-frequency Sliding-mode control in a cascade scheme for the Half-bridge Bidirectional DC-DC converter

For the Half-bridge Bidirectional DC-DC power converter focused on electric traction applications, this paper develops a fixed-frequency Sliding-mode control (SMC) based on a cascade structure. First, the use of cascade control is justified by means of the state space small-signal averaged equations. Then, the design of the proposed cascade SMC scheme is detailed. Lastly, the simulation results showed that the developed control strategy outperforms the sole use of SMC for different comparison scenarios.