DC/DC Buck Converter Using Internal Model Control

Abstract

An internal model control with a conditional integrator is proposed for the robust output regulation of a DC/DC buck converter. Based on the input-output linearization from the state-space averaged model of DC/DC buck converter, the robust output regulation problem of the converter can be converted into a robust stabilization problem of an augmented system consisting of the given buck converter and the internal model by introducing a proper internal model. The procedures include the design of an internal model with conditional integrator and a slidingmode robust controller. Also the closed-loop robust stability is theoretically analyzed. Finally, the effectiveness of the proposed converter is verified in comparing the proposed controller performance with open-loop control, single-loop proportionalplus-integral control, and double-loop proportional-plus-integral control under load disturbances and supply voltage variations.

Load frequency control in power systems via GA based IMC and model order reduction

“…However, one class of strongly directional control strategy that has received extensive research in electric power components and process engineering is IMC [16][17][18][19][20]. This control technique has less computational burden, exhibit robustness, sub optimality, and analytical as well as easily understandable approach.…”

Investigation of Buck-boost DC–DC Converter Operation in Discontinuous Conduction Mode (DCM) and the Effect of Converter Elements on Output Response Using a Mathematical Model Based on Laplace and Z-Transforms

“…Different methods have been presented for mathematical modeling of DC-DC converters. Some of the common methods of mathematical modeling of DC-DC converters are impedance analysis [8], state space [9][10][11], small signal [12][13][14], and state space average [15][16][17]. The presented methods in [11,12] and [14,15] can be used to analyze the converter analysis solely in the transient state.…”

Research on Linear Active Disturbance Rejection Control in DC/DC Boost Converter

“…In [17], an input-output feedback linearization technique is proposed and applied to an AC/DC converter. In [18], an internal model control with a conditional integrator is proposed for the robust output regulation of a DC/DC buck converter. Due to the nonlinearity and unstable zero dynamics of the boost converter, a novel nonlinear control strategy based on input-output feedback linearization is proposed in [19].…”