Cascade SMC control of Ćuk converter for telecommunication systems power supply

This paper gives one possible application of Ćuk converter for telecommunication equipment power supply. Ćuk converter is controlled with cascade control system, with two regualtion loops, outer loop is voltage PI control loop and inner loop is current SMC (Sliding Mode Control) controlled loop. The control system also has input inductor current limiter, which is necessary in cases of large input currents. Simulation results show good control in cases of input voltage test signals with high frequency ripple and slow changes.