DC-DC converter modeling and simulation using state space approach

This paper presents the DC-DC converter model, implementation and simulation using state space modeling approach. Three DC-DC converters including Buck, Boost and Buck-Boost converter are developed using state-space modeling approach and implemented in Simulink. Each converter is modeled based on its circuit topology and its state space matrix are derived in detail. The state space model simulation results are comparable with circuitry model with only up to 0.0015V of tolerance. The simulation computation time has improved up to 7.8 times faster as compared to circuitry model. The state space model embed DC-DC converter into a single block, thus allowing buck, boost or buck-boost to be easily implemented and integrate into other larger system.