No abstract

This paper studies the control of the non-linear, time-varying Buck/Buck converter that operates in continuous mode by using the digital sliding mode technology. The main goal is to meet the final objective of achieving acceptable performance and to overcome the system nonlinearity, or in other words, to track the output voltage during load and source diversity. The simulation procedure is based on a small signal state-space model of the Buck/Boost converter in canonical form to achieve the desired operation by using a pulse width modulator to make the system into a stable state, i.e. error signal is zero. This simulation model is preformed in MATLA/SIMULINK to verify the dynamic performance under different operation conditions. All results of the simulation show that this proposed technique both enhances the regulation of the voltage and eliminates the steady-state ripple.