Design and implementation of an observer controller for a buck converter

Abstract

An observer controller for a buck converter is presented. A state feedback gain matrix is derived in order to achieve the stability of the converter and to ensure the robustness of the controller. A load estimator is designed to estimate the unmeasurable variables and to obtain the zero output voltage error. A pulse-width modulation scheme is adopted to obtain the output voltage regulation. In order to improve the transitory response and dynamic constancy of the converter, the controller parameters are designed based on the current mode control. The design is evaluated and verified using MATLAB/Simulink. An experimental set-up is done to evaluate the controller platform.

Design and analysis of batteryless cardiac pacemaker through combining thermoelectric generators along with DC‐DC converter

“…The second mode is described when the switch is in OFF condition with the diode in ON condition. In the mode of operation, the saved energy of the inductor and the capacitor is discharging by diode operation to meet the load resistor value, which gets off the input voltage source 35 . The buck converter mode operation has a rule, which inductor current never ever reduces to zero, which is described as continuous conduction mode or CCM.…”

“…In the mode of operation, the saved energy of the inductor and the capacitor is discharging by diode operation to meet the load resistor value, which gets off the input voltage source. 35 The buck F I G U R E 5 Circuit diagram of the buck converter converter mode operation has a rule, which inductor current never ever reduces to zero, which is described as continuous conduction mode or CCM. But sometimes converter current may move to zero, which is described as DCM.…”

A conceptual implementation of a buck converter for an off-grid hybrid system consisting of solar and wind turbine sources

“…The buck converter adjusts (lowers) the wind turbine energy depending on the solar panel energy before merging it with the load. Instead of buckboost/boost topology, which remains the conventional approach [6,25,[30][31][32], the buck converter offers easier troubleshooting, simplicity in hardware implementation, and cost-effectiveness [33].…”