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UDE-Based Robust Nonlinear Control of the Boost Converter with Constant Power Load
Department of Engineering Technology, Northern Illinois University, DeKalb, IL, USA
Department of Engineering Technology, Northern Illinois University, DeKalb, IL, USA
- 1 Department of Engineering Technology, Northern Illinois University, DeKalb, IL, USA
- 2 Department of Engineering Technology, Northern Illinois University, DeKalb, IL, USA
Circuits and Systems·Volume 15 (2025)·Pages 57–71·Published 9 January 2025·DOI10.4236/cs.2024.155005
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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. In this work, a robust nonlinear controller based on the uncertainty and disturbance estimator (UDE) scheme is successfully developed to tightly regulate the output voltage of the boost converter. A systematic procedure is developed to select the controller gains to achieve a satisfactory output response. Using simulation, the effectiveness of the proposed controller is validated and compared to a recent robust nonlinear controller.
KeywordsBoost ConverterRobust ControlConstant Power Load (CPL)Uncertainty and Disturbance Estimator (UDE)
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