Abstract
The work here reported tackles the problem of controlling in sliding-mode a boost converter supplying a constant power load (CPL). A linear switching surface is proposed to overcome the intrinsic unstable behavior of the converter in both on and off states, this resulting in a significant mitigation of the inrush current and a high degree of output voltage regulation. A detailed analysis showing the converter trajectories in the phase-plane and the conditions for the existence of sliding-mode is presented. The analytical predictions are in perfect agreement with PSIM and MATLAB simulations.
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