Current-constrained Finite-time Control Algorithm for Buck Converter

In this paper, the current-constrained problem is studied. In order to track the voltage to the reference voltage quickly, a finite-time control algorithm is designed. Meanwhile, considering that when the voltage changes rapidly, the current in the circuit will increase, which will cause damage to the devices in the circuit. Thus, a current-constraint algorithm must be applied to the controller. The controller designed in this paper can achieve stability in finite-time, and the correctness of the control algorithm is proved. Next, the simulation is carried out to verify the dynamic and steady-state performance of the proposed method.