Abstract:
The thesis work is carried out to design and analyze DC-DC and AC-DC converters. Two types of DC-DC converters, buck and zeta, are presented in this book with dc steady state analysis at continuous conduction mode, ac small signal analysis and simulation results. The analysis of DC-DC buck converter includes a switched capacitor buck converter and a switched inductor buck converter. These two converters have been proposed in a previously published article. But, the article did not show the detailed analysis. So, the detailed mathematical model has been developed for these two buck circuits. Another type of buck converter, based on switched inductor-capacitor, is presented briefly in chapter 5. This buck converter has been accepted in an IEEE conference. Two types of zeta converter, switched inductor and modified conventional, are shown in this book. The modified conventional zeta circuit is a new design while the other circuit is taken from a previously published article. The newly developed modified conventional zeta circuit improves the performance of conventional zeta circuit by increasing the efficiency above 95%. A two stage AC-DC converter based on switched inductor zeta circuit is designed and analyzed. The proposed AC-DC circuit improves the power quality compared to the conventional circuit. It raises the efficiency above 95%, increases the power factor (PF) by 6% compared to the conventional circuit and improve the total harmonic distortion (THD) by 2-3% with respect to the conventional circuit.
