Development of a Single-Phase Hybrid Quadratic AC-DC Boost Converter with Improved Power Quality

This research presents a novel hybrid AC-DC Boost converter topology. The positive aspects of AC-DC conversion methods are combined in the proposed converter architecture to provide effective power transmission and enhanced grid compatibility. The circuit operations of the proposed converter are also described in detail. The performance of the converter has been evaluated with both the open-loop and closed-loop simulation models. The proposed circuit shows higher voltage gain performance by maintaining other factors including efficiency, total harmonic distortion (THD) and power factor (PF) within a good range. For open loop operation, the suggested converter offers conversion efficiencies of up to 99.77%. The performance of THD percentage shows remarkable result that is lower than the conventional circuit, while PF remains high for a wide range of operations. In closed-loop analysis, we achieved near unity (0.99) PF, more than 99% efficiency and lower THD than the conventional circuit.