Journal ArticleDOI
Disturbance-Observer-Based Feedback Linearization Control for Stabilization and Accurate Voltage Tracking of a DC–DC Boost Converter
TLDR
In this article , the state model of the dc-dc boost converter is modified in such a way that it behaves like a minimum-phase system, where the control input entering the state equation for the output voltage is treated as an unknown disturbance to make the relative degree of the system equal the system's order.Abstract:
The nonminimum-phase property of the dc–dc boost converter can create difficulties in designing a stable, robust, and fast control for the output voltage. In this article, these difficulties are reduced by modifying the state model of the boost converter in such a way that it behaves like a minimum-phase system. More specifically, the control input entering the state equation for the output voltage is treated as an unknown disturbance to make the relative degree of the system equal the system’s order. As a result, the modified model does not exhibit zero dynamics, so that it can be treated as a minimum-phase system for the control design. The modified model is, then, used to derive a dynamic compensator for the output voltage regulation. More explicitly, the dynamic compensator is designed based on combining linearizing feedback control with a disturbance observer. The latter is employed to compensate for model uncertainties and unknown load with a view to ensure asymptotic regulation under the composite controller. The asymptotic regulation is achieved due to the integral action property characterizing the disturbance observer. More interestingly, after simple algebraic manipulation, it turns out that the composite controller reduces to a dynamic state feedback control plus an antiwindup scheme to mitigate the effect of control saturation during transients. The performance of the proposed controller is verified by experimental tests. The experimental results demonstrate the ability of the proposed controller to achieve good transient and steady-state performances. read more
Citations
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Journal ArticleDOI
Robust Adaptive Control Strategy for a Bidirectional DC-DC Converter Based on Extremum Seeking and Sliding Mode Control
Hoai An Trinh,Duc Giap Nguyen,Van Du Phan,Tan-Quoc Duong,Hoai Vu Anh Truong,Sung-Jin Choi,Kyoung Kwan Ahn +6 more
TL;DR: In this paper , an extended state observer (ESO)-based continuous sliding mode control is proposed to estimate and compensate for unknown disturbances, which can guarantee high tracking precision, fast disturbance rejection, and chattering reduction.
Journal ArticleDOI
Novel anti-disturbance fast terminal sliding mode control with improved quick reaching law for DC-DC buck converter
TL;DR: In this article , a fast terminal sliding surface with additional nonlinear terms is developed and designed to improve the performance and suppress the chattering problem of variable structure control system, and a nonlinear novel quick reaching law with dynamic power term is suggested to enhance the convergence rate whenever the system state position is near to or far from the manifold.
Journal ArticleDOI
Intelligent ISSA-Based Non-Singular Terminal Sliding-Mode Control of DC–DC Boost Converter Feeding a Constant Power Load System
TL;DR: In this paper, a non-singular terminal sliding-mode control (NTSMC) strategy based on the improved salp swarm algorithm (ISSA) was proposed for DC microgrid systems with constant power loads.
Journal ArticleDOI
Static anti-windup compensator design for locally Lipschitz systems under input and output delays
TL;DR: In this paper , a static AWC design methodology for the locally Lipschitz nonlinear systems, containing time-varying interval delays in input and output of the system in the presence of actuator saturation is proposed.
Proceedings ArticleDOI
Investigation of Full-Order State Output Feedback Controller on DC-DC Converter Rapid Load Current Change
TL;DR: In this article , a state feedback controller was designed for DC-DC converters, and the integrator was introduced to eliminate the inherent steady-state error for improved system robustness to disturbance rejection.
References
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Journal ArticleDOI
Disturbance-Observer-Based Control and Related Methods—An Overview
TL;DR: This survey gives a systematic and comprehensive tutorial and summary on the existing disturbance/uncertainty estimation and attenuation techniques, most notably, DOBC, active disturbance rejection control, disturbance accommodation control, and composite hierarchical antidisturbance control.
Journal ArticleDOI
Anti-windup design: an overview of some recent advances and open problems
TL;DR: An overview of anti-windup techniques for linear systems with saturated inputs can be found in this article, where the authors provide constructive LMI conditions for the synthesis of antiwindup compensators in both global and local contexts.
Proceedings ArticleDOI
Integrator Windup and How to Avoid It
Karl Johan Åström,Lars Rundqwist +1 more
TL;DR: A general procedure to avoid windup which admits a unification of the ideas is given and the results are illustrated on a number of examples.
Journal ArticleDOI
A Novel Composite Nonlinear Controller for Stabilization of Constant Power Load in DC Microgrid
TL;DR: A composite nonlinear controller is proposed for stabilizing dc/dc boost converter feeding CPLs by integrating a nonlinear disturbance observer (NDO)-based feedforward compensation with backstepping design algorithm with strictly guaranteed large signal stability.
Journal ArticleDOI
Direct Voltage Control of DC–DC Boost Converters Using Enumeration-Based Model Predictive Control
TL;DR: In this article, a model predictive control (MPC) approach for dc-dc boost converters is presented, where a discrete-time switched nonlinear model of the converter is derived, which captures both the continuous and the discontinuous conduction mode.