Design of a Robust Voltage Controller for a DC-DC Buck Converter Using Fractional-Order Terminal Sliding Mode Control Strategy

Fractional-Fuzzy PID Control Approach of Photovoltaic-Wire Feeder System (PV-WFS): Simulation and HIL-Based Experimental Investigation

“…This formula is named switched model because it describes the dynamic behaviors of the DC/DC converters [50,51].…”

Experimental Investigation of an Adaptive Fuzzy-Neural Fast Terminal Synergetic Controller for Buck DC/DC Converters

“…These equations must be treated around the steady-operating point with a small-signal linearization approach before being studied with PID controllers. When a severe disturbance causes a substantial divergence from the typical operating point, it is difficult for a standard buck DC/DC converter to achieve perfect stability [1]. In light of this, adjusting the output voltage of the buck DC/DC converter is a challenging task.…”

“…To overcome some of the previously mentioned challenges, this work suggests an AFN-FTSC algorithm for the output voltage control without complete converter model knowledge. FNN model, and universal approximator, are utilized in an adaptive scheme to approximate the converter nonlinear dynamics, while the FTSC algorithm is utilized to guarantee robustness through an easy-to-implement chatter-free continuous control law [1].…”

Fractional‐order controllers for switching DC/DC converters using the K‐factor method: Analysis and circuit realization

“…This means that after applying the Laplace transform, systems with non‐integer‐order transfer functions can be obtained, which finds numerous applications in different engineering disciplines 9,10 . Among the important applications of fractional calculus is fractional‐order control 3‐7,11‐39 …”

“…The most practical situation is the second one where it is required to design a fractional‐order controller to improve the performance of an integer‐order system. An important example of this can be found in power electronic circuit applications and particularly switching DC/DC converters 3‐7,20,23‐47 . As can be noticed from most of these contributions, the designed fractional‐order controllers require digital signal processing techniques, which adds an extra overhead on present implementations of switching DC/DC converters in commercial products.…”