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Linares-Flores, J., Juarez-Abad, J.A., Hernandez-Mendez, A., Castro-Heredia, O., Guerrero-Castellanos, J.F., Heredia-Barba, R., et al. (2022) Sliding Mode Control Based on Linear Extended State Observer for DC-to-DC Buck-Boost Power Converter System with Mismatched Disturbances. IEEE Transactions on Industry Applications, 58, 940-950.
https://doi.org/10.1109/tia.2021.3130017

has been cited by the following article:

• TITLE: Robust Nonlinear Current Sensorless Control of the Boost Converter with Constant Power Load

  AUTHORS: Said Oucheriah, Abul Azad

  KEYWORDS: Boost Converter, Robust Sliding Mode Control, Constant Power Load (CPL), Current-Sensorless Control, Extended State Observer

  JOURNAL NAME: Circuits and Systems, Vol.15 No.3, March 29, 2024

  ABSTRACT: The boost converter feeding a constant power load (CPL) is a non-minimum phase system that is prone to the destabilizing effects of the negative incremental resistance of the CPL and presents a major challenge in the design of stabilizing controllers. A PWM-based current-sensorless robust sliding mode controller is developed that requires only the measurement of the output voltage. An extended state observer is developed to estimate a lumped uncertainty signal that comprises the uncertain load power and the input voltage, the converter parasitics, the component uncertainties and the estimation of the derivative of the output voltage needed in the implementation of the controller. A linear sliding surface is used to derive the controller, which is simple in its design and yet exhibits excellent features in terms of robustness to external disturbances, parameter uncertainties, and parasitics despite the absence of the inductor’s current feedback. The robustness of the controller is validated by computer simulations.