Abstract
The use of DC power systems is increasingly widely used, so we need a system to convert DC power systems, one of which is a buck converter. The buck converter system requires a controller so that the output voltage generated is as desired without any disturbance when the buck is operating. This study examines improvements in buck converter performance using backstepping and SMC controllers. Backstepping controller and SMC are able to maintain stability where it can be shown by looking at the output voltage value of the buck converter. The results of a comparison of the simulation implementation of the backstepping controller and the SMC show that the recovery time of the SMC is faster than backstepping. From this comparison it is also seen that the amount of SMC voltage deviation is smaller than backstepping.
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