Modern electronics are operating at lower voltages with higher currents, requiring
power converters to deliver these requirements efficiently. In this thesis, a switch-inductor buck converter is designed for the required specifications; and for the selected
design, component losses and efficiency are calculated. A MATLAB/Simulink model
is constructed, and tested in the presence of load and source disturbances to show
the converter cannot maintain the desired output voltage when the disturbances are
applied.
A fuzzy logic PID controller is designed to regulate the duty cycle of the converter to
control the output voltage. Control surfaces are designed for proportional, integral,
and derivative gains of the fuzzy PID controller. The compensated power converter is
tested using the Simulink model in the presence of the disturbances, and it is shown
that the fuzzy controller is capable of keeping the power converter output voltage
within the operating requirements, while improving system speed and stability.